annotate src/video/SDL_RLEaccel.c @ 1505:4d005dfbb7f5

Fixed bug #139 The text in SDL_WM_SetCaption() is in UTF-8 encoding.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 13 Mar 2006 01:33:58 +0000
parents 84de7511f79f
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /*
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25 * RLE encoding for software colorkey and alpha-channel acceleration
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26 *
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27 * Original version by Sam Lantinga
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28 *
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29 * Mattias Engdegård (Yorick): Rewrite. New encoding format, encoder and
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30 * decoder. Added per-surface alpha blitter. Added per-pixel alpha
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31 * format, encoder and blitter.
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32 *
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33 * Many thanks to Xark and johns for hints, benchmarks and useful comments
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34 * leading to this code.
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35 *
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36 * Welcome to Macro Mayhem.
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37 */
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38
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39 /*
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40 * The encoding translates the image data to a stream of segments of the form
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41 *
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42 * <skip> <run> <data>
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43 *
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44 * where <skip> is the number of transparent pixels to skip,
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45 * <run> is the number of opaque pixels to blit,
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46 * and <data> are the pixels themselves.
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47 *
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48 * This basic structure is used both for colorkeyed surfaces, used for simple
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49 * binary transparency and for per-surface alpha blending, and for surfaces
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50 * with per-pixel alpha. The details differ, however:
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51 *
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52 * Encoding of colorkeyed surfaces:
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53 *
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54 * Encoded pixels always have the same format as the target surface.
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55 * <skip> and <run> are unsigned 8 bit integers, except for 32 bit depth
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56 * where they are 16 bit. This makes the pixel data aligned at all times.
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57 * Segments never wrap around from one scan line to the next.
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58 *
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59 * The end of the sequence is marked by a zero <skip>,<run> pair at the *
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60 * beginning of a line.
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61 *
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62 * Encoding of surfaces with per-pixel alpha:
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63 *
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64 * The sequence begins with a struct RLEDestFormat describing the target
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65 * pixel format, to provide reliable un-encoding.
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66 *
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67 * Each scan line is encoded twice: First all completely opaque pixels,
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68 * encoded in the target format as described above, and then all
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69 * partially transparent (translucent) pixels (where 1 <= alpha <= 254),
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70 * in the following 32-bit format:
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71 *
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72 * For 32-bit targets, each pixel has the target RGB format but with
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73 * the alpha value occupying the highest 8 bits. The <skip> and <run>
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74 * counts are 16 bit.
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75 *
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76 * For 16-bit targets, each pixel has the target RGB format, but with
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77 * the middle component (usually green) shifted 16 steps to the left,
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78 * and the hole filled with the 5 most significant bits of the alpha value.
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79 * i.e. if the target has the format rrrrrggggggbbbbb,
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80 * the encoded pixel will be 00000gggggg00000rrrrr0aaaaabbbbb.
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81 * The <skip> and <run> counts are 8 bit for the opaque lines, 16 bit
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82 * for the translucent lines. Two padding bytes may be inserted
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83 * before each translucent line to keep them 32-bit aligned.
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84 *
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85 * The end of the sequence is marked by a zero <skip>,<run> pair at the
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86 * beginning of an opaque line.
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87 */
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88
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89 #include "SDL_video.h"
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90 #include "SDL_sysvideo.h"
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91 #include "SDL_blit.h"
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92 #include "SDL_RLEaccel_c.h"
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93
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94 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && SDL_ASSEMBLY_ROUTINES
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95 #define MMX_ASMBLIT
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96 #endif
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97
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98 #ifdef MMX_ASMBLIT
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99 #include "mmx.h"
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100 #include "SDL_cpuinfo.h"
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101 #endif
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102
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103 #ifndef MAX
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104 #define MAX(a, b) ((a) > (b) ? (a) : (b))
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105 #endif
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106 #ifndef MIN
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107 #define MIN(a, b) ((a) < (b) ? (a) : (b))
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108 #endif
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109
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110 #define PIXEL_COPY(to, from, len, bpp) \
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111 do { \
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112 if(bpp == 4) { \
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113 SDL_memcpy4(to, from, (size_t)(len)); \
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114 } else { \
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115 SDL_memcpy(to, from, (size_t)(len) * (bpp)); \
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116 } \
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117 } while(0)
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118
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119 /*
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120 * Various colorkey blit methods, for opaque and per-surface alpha
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121 */
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122
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123 #define OPAQUE_BLIT(to, from, length, bpp, alpha) \
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124 PIXEL_COPY(to, from, length, bpp)
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125
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126 #ifdef MMX_ASMBLIT
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127
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128 #define ALPHA_BLIT32_888MMX(to, from, length, bpp, alpha) \
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129 do { \
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130 Uint32 *srcp = (Uint32 *)(from); \
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131 Uint32 *dstp = (Uint32 *)(to); \
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132 int i = 0x00FF00FF; \
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133 movd_m2r(*(&i), mm3); \
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134 punpckldq_r2r(mm3, mm3); \
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135 i = 0xFF000000; \
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136 movd_m2r(*(&i), mm7); \
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137 punpckldq_r2r(mm7, mm7); \
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138 i = alpha | alpha << 16; \
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139 movd_m2r(*(&i), mm4); \
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140 punpckldq_r2r(mm4, mm4); \
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141 pcmpeqd_r2r(mm5,mm5); /* set mm5 to "1" */ \
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142 pxor_r2r(mm7, mm5); /* make clear alpha mask */ \
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143 i = length; \
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144 if(i & 1) { \
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145 movd_m2r((*srcp), mm1); /* src -> mm1 */ \
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146 punpcklbw_r2r(mm1, mm1); \
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147 pand_r2r(mm3, mm1); \
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148 movd_m2r((*dstp), mm2); /* dst -> mm2 */ \
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Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
149 punpcklbw_r2r(mm2, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
150 pand_r2r(mm3, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
151 psubw_r2r(mm2, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
152 pmullw_r2r(mm4, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
153 psrlw_i2r(8, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
154 paddw_r2r(mm1, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
155 pand_r2r(mm3, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
156 packuswb_r2r(mm2, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
157 pand_r2r(mm5, mm2); /* 00000RGB -> mm2 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
158 movd_r2m(mm2, *dstp); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
159 ++srcp; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
160 ++dstp; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
161 i--; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
162 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
163 for(; i > 0; --i) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
164 movq_m2r((*srcp), mm0); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
165 movq_r2r(mm0, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
166 punpcklbw_r2r(mm0, mm0); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
167 movq_m2r((*dstp), mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
168 punpckhbw_r2r(mm1, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
169 movq_r2r(mm2, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
170 pand_r2r(mm3, mm0); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
171 punpcklbw_r2r(mm2, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
172 pand_r2r(mm3, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
173 punpckhbw_r2r(mm6, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
174 pand_r2r(mm3, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
175 psubw_r2r(mm2, mm0); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
176 pmullw_r2r(mm4, mm0); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
177 pand_r2r(mm3, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
178 psubw_r2r(mm6, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
179 pmullw_r2r(mm4, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
180 psrlw_i2r(8, mm0); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
181 paddw_r2r(mm0, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
182 psrlw_i2r(8, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
183 paddw_r2r(mm1, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
184 pand_r2r(mm3, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
185 pand_r2r(mm3, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
186 packuswb_r2r(mm2, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
187 packuswb_r2r(mm6, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
188 psrlq_i2r(32, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
189 psllq_i2r(32, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
190 por_r2r(mm6, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
191 pand_r2r(mm5, mm2); /* 00000RGB -> mm2 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
192 movq_r2m(mm2, *dstp); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
193 srcp += 2; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
194 dstp += 2; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
195 i--; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
196 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
197 emms(); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
198 } while(0)
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
199
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
200 #define ALPHA_BLIT16_565MMX(to, from, length, bpp, alpha) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
201 do { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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diff changeset
202 int i, n = 0; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
203 Uint16 *srcp = (Uint16 *)(from); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
204 Uint16 *dstp = (Uint16 *)(to); \
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Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
205 Uint32 ALPHA = 0xF800; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
206 movd_m2r(*(&ALPHA), mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
207 punpcklwd_r2r(mm1, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
208 punpcklwd_r2r(mm1, mm1); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
209 ALPHA = 0x07E0; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
210 movd_m2r(*(&ALPHA), mm4); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
211 punpcklwd_r2r(mm4, mm4); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
212 punpcklwd_r2r(mm4, mm4); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
213 ALPHA = 0x001F; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
214 movd_m2r(*(&ALPHA), mm7); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
215 punpcklwd_r2r(mm7, mm7); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
216 punpcklwd_r2r(mm7, mm7); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
217 alpha &= ~(1+2+4); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
218 i = (Uint32)alpha | (Uint32)alpha << 16; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
219 movd_m2r(*(&i), mm0); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
220 punpckldq_r2r(mm0, mm0); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
221 ALPHA = alpha >> 3; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
222 i = ((int)(length) & 3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
223 for(; i > 0; --i) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
224 Uint32 s = *srcp++; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
225 Uint32 d = *dstp; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
226 s = (s | s << 16) & 0x07e0f81f; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
227 d = (d | d << 16) & 0x07e0f81f; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
228 d += (s - d) * ALPHA >> 5; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
229 d &= 0x07e0f81f; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
230 *dstp++ = d | d >> 16; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
231 n++; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
232 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
233 i = (int)(length) - n; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
234 for(; i > 0; --i) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
235 movq_m2r((*dstp), mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
236 movq_m2r((*srcp), mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
237 movq_r2r(mm2, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
238 pand_r2r(mm1 , mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
239 psrlq_i2r(11, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
240 movq_r2r(mm3, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
241 pand_r2r(mm1 , mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
242 psrlq_i2r(11, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
243 psubw_r2r(mm6, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
244 pmullw_r2r(mm0, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
245 psrlw_i2r(8, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
246 paddw_r2r(mm5, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
247 psllq_i2r(11, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
248 pand_r2r(mm1, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
249 movq_r2r(mm4, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
250 por_r2r(mm7, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
251 pand_r2r(mm5, mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
252 por_r2r(mm6, mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
253 movq_r2r(mm2, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
254 pand_r2r(mm4 , mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
255 psrlq_i2r(5, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
256 movq_r2r(mm3, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
257 pand_r2r(mm4 , mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
258 psrlq_i2r(5, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
259 psubw_r2r(mm6, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
260 pmullw_r2r(mm0, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
261 psrlw_i2r(8, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
262 paddw_r2r(mm5, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
263 psllq_i2r(5, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
264 pand_r2r(mm4, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
265 movq_r2r(mm1, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
266 por_r2r(mm7, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
267 pand_r2r(mm5, mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
268 por_r2r(mm6, mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
269 movq_r2r(mm2, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
270 pand_r2r(mm7 , mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
271 movq_r2r(mm3, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
272 pand_r2r(mm7 , mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
273 psubw_r2r(mm6, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
274 pmullw_r2r(mm0, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
275 psrlw_i2r(8, mm5); \
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diff changeset
276 paddw_r2r(mm5, mm6); \
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diff changeset
277 pand_r2r(mm7, mm6); \
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diff changeset
278 movq_r2r(mm1, mm5); \
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diff changeset
279 por_r2r(mm4, mm5); \
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diff changeset
280 pand_r2r(mm5, mm3); \
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diff changeset
281 por_r2r(mm6, mm3); \
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diff changeset
282 movq_r2m(mm3, *dstp); \
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diff changeset
283 srcp += 4; \
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diff changeset
284 dstp += 4; \
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diff changeset
285 i -= 3; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
286 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
287 emms(); \
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diff changeset
288 } while(0)
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
289
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diff changeset
290 #define ALPHA_BLIT16_555MMX(to, from, length, bpp, alpha) \
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diff changeset
291 do { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
292 int i, n = 0; \
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diff changeset
293 Uint16 *srcp = (Uint16 *)(from); \
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diff changeset
294 Uint16 *dstp = (Uint16 *)(to); \
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diff changeset
295 Uint32 ALPHA = 0x7C00; \
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diff changeset
296 movd_m2r(*(&ALPHA), mm1); \
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diff changeset
297 punpcklwd_r2r(mm1, mm1); \
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diff changeset
298 punpcklwd_r2r(mm1, mm1); \
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diff changeset
299 ALPHA = 0x03E0; \
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diff changeset
300 movd_m2r(*(&ALPHA), mm4); \
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diff changeset
301 punpcklwd_r2r(mm4, mm4); \
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diff changeset
302 punpcklwd_r2r(mm4, mm4); \
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diff changeset
303 ALPHA = 0x001F; \
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diff changeset
304 movd_m2r(*(&ALPHA), mm7); \
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diff changeset
305 punpcklwd_r2r(mm7, mm7); \
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diff changeset
306 punpcklwd_r2r(mm7, mm7); \
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diff changeset
307 alpha &= ~(1+2+4); \
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diff changeset
308 i = (Uint32)alpha | (Uint32)alpha << 16; \
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diff changeset
309 movd_m2r(*(&i), mm0); \
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diff changeset
310 punpckldq_r2r(mm0, mm0); \
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diff changeset
311 i = ((int)(length) & 3); \
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diff changeset
312 ALPHA = alpha >> 3; \
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diff changeset
313 for(; i > 0; --i) { \
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diff changeset
314 Uint32 s = *srcp++; \
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diff changeset
315 Uint32 d = *dstp; \
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diff changeset
316 s = (s | s << 16) & 0x03e07c1f; \
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diff changeset
317 d = (d | d << 16) & 0x03e07c1f; \
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diff changeset
318 d += (s - d) * ALPHA >> 5; \
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diff changeset
319 d &= 0x03e07c1f; \
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diff changeset
320 *dstp++ = d | d >> 16; \
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diff changeset
321 n++; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
322 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
323 i = (int)(length) - n; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
324 for(; i > 0; --i) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
325 movq_m2r((*dstp), mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
326 movq_m2r((*srcp), mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
327 movq_r2r(mm2, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
328 pand_r2r(mm1 , mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
329 psrlq_i2r(10, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
330 movq_r2r(mm3, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
331 pand_r2r(mm1 , mm6); \
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diff changeset
332 psrlq_i2r(10, mm6); \
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diff changeset
333 psubw_r2r(mm6, mm5); \
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parents: 526
diff changeset
334 pmullw_r2r(mm0, mm5); \
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diff changeset
335 psrlw_i2r(8, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
336 paddw_r2r(mm5, mm6); \
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diff changeset
337 psllq_i2r(10, mm6); \
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diff changeset
338 pand_r2r(mm1, mm6); \
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diff changeset
339 movq_r2r(mm4, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
340 por_r2r(mm7, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
341 pand_r2r(mm5, mm3); \
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parents: 526
diff changeset
342 por_r2r(mm6, mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
343 movq_r2r(mm2, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
344 pand_r2r(mm4 , mm5); \
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diff changeset
345 psrlq_i2r(5, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
346 movq_r2r(mm3, mm6); \
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diff changeset
347 pand_r2r(mm4 , mm6); \
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diff changeset
348 psrlq_i2r(5, mm6); \
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diff changeset
349 psubw_r2r(mm6, mm5); \
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diff changeset
350 pmullw_r2r(mm0, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
351 psrlw_i2r(8, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff changeset
352 paddw_r2r(mm5, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
353 psllq_i2r(5, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
354 pand_r2r(mm4, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
355 movq_r2r(mm1, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
356 por_r2r(mm7, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
357 pand_r2r(mm5, mm3); \
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parents: 526
diff changeset
358 por_r2r(mm6, mm3); \
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parents: 526
diff changeset
359 movq_r2r(mm2, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
360 pand_r2r(mm7 , mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
361 movq_r2r(mm3, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
362 pand_r2r(mm7 , mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
363 psubw_r2r(mm6, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
364 pmullw_r2r(mm0, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
365 psrlw_i2r(8, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
366 paddw_r2r(mm5, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
367 pand_r2r(mm7, mm6); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
368 movq_r2r(mm1, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
369 por_r2r(mm4, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
370 pand_r2r(mm5, mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
371 por_r2r(mm6, mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
372 movq_r2m(mm3, *dstp); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
373 srcp += 4; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
374 dstp += 4; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
375 i -= 3; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
376 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
377 emms(); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
378 } while(0)
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
379
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
380 #endif
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents: 526
diff changeset
381
0
74212992fb08 Initial revision
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parents:
diff changeset
382 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 * For 32bpp pixels on the form 0x00rrggbb:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 * If we treat the middle component separately, we can process the two
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 * remaining in parallel. This is safe to do because of the gap to the left
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 * of each component, so the bits from the multiplication don't collide.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 * This can be used for any RGB permutation of course.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 #define ALPHA_BLIT32_888(to, from, length, bpp, alpha) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 int i; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 Uint32 *src = (Uint32 *)(from); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 Uint32 *dst = (Uint32 *)(to); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 for(i = 0; i < (int)(length); i++) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 Uint32 s = *src++; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 Uint32 d = *dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 Uint32 s1 = s & 0xff00ff; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 Uint32 d1 = d & 0xff00ff; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 s &= 0xff00; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 d &= 0xff00; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 d = (d + ((s - d) * alpha >> 8)) & 0xff00; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 *dst++ = d1 | d; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 * For 16bpp pixels we can go a step further: put the middle component
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 * in the high 16 bits of a 32 bit word, and process all three RGB
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 * components at the same time. Since the smallest gap is here just
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parents:
diff changeset
411 * 5 bits, we have to scale alpha down to 5 bits as well.
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parents:
diff changeset
412 */
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parents:
diff changeset
413 #define ALPHA_BLIT16_565(to, from, length, bpp, alpha) \
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 do { \
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 int i; \
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parents:
diff changeset
416 Uint16 *src = (Uint16 *)(from); \
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parents:
diff changeset
417 Uint16 *dst = (Uint16 *)(to); \
689
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Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
418 Uint32 ALPHA = alpha >> 3; \
0
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parents:
diff changeset
419 for(i = 0; i < (int)(length); i++) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 Uint32 s = *src++; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 Uint32 d = *dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 s = (s | s << 16) & 0x07e0f81f; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 d = (d | d << 16) & 0x07e0f81f; \
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
424 d += (s - d) * ALPHA >> 5; \
0
74212992fb08 Initial revision
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parents:
diff changeset
425 d &= 0x07e0f81f; \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
426 *dst++ = (Uint16)(d | d >> 16); \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 #define ALPHA_BLIT16_555(to, from, length, bpp, alpha) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 int i; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 Uint16 *src = (Uint16 *)(from); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 Uint16 *dst = (Uint16 *)(to); \
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
435 Uint32 ALPHA = alpha >> 3; \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 for(i = 0; i < (int)(length); i++) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 Uint32 s = *src++; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 Uint32 d = *dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 s = (s | s << 16) & 0x03e07c1f; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 d = (d | d << 16) & 0x03e07c1f; \
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
441 d += (s - d) * ALPHA >> 5; \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 d &= 0x03e07c1f; \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
443 *dst++ = (Uint16)(d | d >> 16); \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 * The general slow catch-all function, for remaining depths and formats
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 #define ALPHA_BLIT_ANY(to, from, length, bpp, alpha) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 int i; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 Uint8 *src = from; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 Uint8 *dst = to; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 for(i = 0; i < (int)(length); i++) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 Uint32 s, d; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 unsigned rs, gs, bs, rd, gd, bd; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 switch(bpp) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 case 2: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 s = *(Uint16 *)src; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 d = *(Uint16 *)dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 case 3: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 s = (src[0] << 16) | (src[1] << 8) | src[2]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 d = (dst[0] << 16) | (dst[1] << 8) | dst[2]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 } else { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 s = (src[2] << 16) | (src[1] << 8) | src[0]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 d = (dst[2] << 16) | (dst[1] << 8) | dst[0]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 case 4: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 s = *(Uint32 *)src; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 d = *(Uint32 *)dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 RGB_FROM_PIXEL(s, fmt, rs, gs, bs); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 RGB_FROM_PIXEL(d, fmt, rd, gd, bd); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 rd += (rs - rd) * alpha >> 8; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 gd += (gs - gd) * alpha >> 8; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 bd += (bs - bd) * alpha >> 8; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 PIXEL_FROM_RGB(d, fmt, rd, gd, bd); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 switch(bpp) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 case 2: \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
485 *(Uint16 *)dst = (Uint16)d; \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 case 3: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) { \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
489 dst[0] = (Uint8)(d >> 16); \
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
490 dst[1] = (Uint8)(d >> 8); \
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
491 dst[2] = (Uint8)(d); \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 } else { \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
493 dst[0] = (Uint8)d; \
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
494 dst[1] = (Uint8)(d >> 8); \
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
495 dst[2] = (Uint8)(d >> 16); \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 case 4: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 *(Uint32 *)dst = d; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 src += bpp; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 dst += bpp; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506
880
9ef41050100c Date: Tue, 30 Mar 2004 21:26:47 -0600
Sam Lantinga <slouken@libsdl.org>
parents: 879
diff changeset
507 #ifdef MMX_ASMBLIT
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
509 #define ALPHA_BLIT32_888_50MMX(to, from, length, bpp, alpha) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
510 do { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
511 Uint32 *srcp = (Uint32 *)(from); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
512 Uint32 *dstp = (Uint32 *)(to); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
513 int i = 0x00fefefe; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
514 movd_m2r(*(&i), mm4); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
515 punpckldq_r2r(mm4, mm4); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
516 i = 0x00010101; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
517 movd_m2r(*(&i), mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
518 punpckldq_r2r(mm3, mm3); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
519 i = (int)(length); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
520 if( i & 1 ) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
521 Uint32 s = *srcp++; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
522 Uint32 d = *dstp; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
523 *dstp++ = (((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
524 + (s & d & 0x00010101); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
525 i--; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
526 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
527 for(; i > 0; --i) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
528 movq_m2r((*dstp), mm2); /* dst -> mm2 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
529 movq_r2r(mm2, mm6); /* dst -> mm6 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
530 movq_m2r((*srcp), mm1); /* src -> mm1 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
531 movq_r2r(mm1, mm5); /* src -> mm5 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
532 pand_r2r(mm4, mm6); /* dst & 0x00fefefe -> mm6 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
533 pand_r2r(mm4, mm5); /* src & 0x00fefefe -> mm5 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
534 paddd_r2r(mm6, mm5); /* (dst & 0x00fefefe) + (dst & 0x00fefefe) -> mm5 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
535 psrld_i2r(1, mm5); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
536 pand_r2r(mm1, mm2); /* s & d -> mm2 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
537 pand_r2r(mm3, mm2); /* s & d & 0x00010101 -> mm2 */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
538 paddd_r2r(mm5, mm2); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
539 movq_r2m(mm2, (*dstp)); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
540 dstp += 2; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
541 srcp += 2; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
542 i--; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
543 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
544 emms(); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
545 } while(0)
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
546
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
547 #endif
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
548
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 * Special case: 50% alpha (alpha=128)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 * This is treated specially because it can be optimized very well, and
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 * since it is good for many cases of semi-translucency.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 * The theory is to do all three components at the same time:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 * First zero the lowest bit of each component, which gives us room to
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 * add them. Then shift right and add the sum of the lowest bits.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 #define ALPHA_BLIT32_888_50(to, from, length, bpp, alpha) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 int i; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 Uint32 *src = (Uint32 *)(from); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 Uint32 *dst = (Uint32 *)(to); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 for(i = 0; i < (int)(length); i++) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 Uint32 s = *src++; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564 Uint32 d = *dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 *dst++ = (((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 + (s & d & 0x00010101); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 * For 16bpp, we can actually blend two pixels in parallel, if we take
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 * care to shift before we add, not after.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575 /* helper: blend a single 16 bit pixel at 50% */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 #define BLEND16_50(dst, src, mask) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
577 do { \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
578 Uint32 s = *src++; \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579 Uint32 d = *dst; \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
580 *dst++ = (Uint16)((((s & mask) + (d & mask)) >> 1) + \
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
581 (s & d & (~mask & 0xffff))); \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584 /* basic 16bpp blender. mask is the pixels to keep when adding. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585 #define ALPHA_BLIT16_50(to, from, length, bpp, alpha, mask) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 unsigned n = (length); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588 Uint16 *src = (Uint16 *)(from); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589 Uint16 *dst = (Uint16 *)(to); \
1456
84de7511f79f Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
590 if(((uintptr_t)src ^ (uintptr_t)dst) & 3) { \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 /* source and destination not in phase, blit one by one */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 while(n--) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593 BLEND16_50(dst, src, mask); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594 } else { \
1456
84de7511f79f Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
595 if((uintptr_t)src & 3) { \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 /* first odd pixel */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597 BLEND16_50(dst, src, mask); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598 n--; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600 for(; n > 1; n -= 2) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
601 Uint32 s = *(Uint32 *)src; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
602 Uint32 d = *(Uint32 *)dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
603 *(Uint32 *)dst = ((s & (mask | mask << 16)) >> 1) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 + ((d & (mask | mask << 16)) >> 1) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
605 + (s & d & (~(mask | mask << 16))); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 src += 2; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 dst += 2; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609 if(n) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 BLEND16_50(dst, src, mask); /* last odd pixel */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 #define ALPHA_BLIT16_565_50(to, from, length, bpp, alpha) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 ALPHA_BLIT16_50(to, from, length, bpp, alpha, 0xf7de)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 #define ALPHA_BLIT16_555_50(to, from, length, bpp, alpha) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 ALPHA_BLIT16_50(to, from, length, bpp, alpha, 0xfbde)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619
880
9ef41050100c Date: Tue, 30 Mar 2004 21:26:47 -0600
Sam Lantinga <slouken@libsdl.org>
parents: 879
diff changeset
620 #ifdef MMX_ASMBLIT
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 #define CHOOSE_BLIT(blitter, alpha, fmt) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 if(alpha == 255) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 switch(fmt->BytesPerPixel) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 case 1: blitter(1, Uint8, OPAQUE_BLIT); break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627 case 2: blitter(2, Uint8, OPAQUE_BLIT); break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 case 3: blitter(3, Uint8, OPAQUE_BLIT); break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 case 4: blitter(4, Uint16, OPAQUE_BLIT); break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
630 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631 } else { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 switch(fmt->BytesPerPixel) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633 case 1: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634 /* No 8bpp alpha blitting */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637 case 2: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 switch(fmt->Rmask | fmt->Gmask | fmt->Bmask) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639 case 0xffff: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 if(fmt->Gmask == 0x07e0 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
641 || fmt->Rmask == 0x07e0 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642 || fmt->Bmask == 0x07e0) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
643 if(alpha == 128) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644 blitter(2, Uint8, ALPHA_BLIT16_565_50); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
645 else { \
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
646 if(SDL_HasMMX()) \
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
647 blitter(2, Uint8, ALPHA_BLIT16_565MMX); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
648 else \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
649 blitter(2, Uint8, ALPHA_BLIT16_565); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
650 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
651 } else \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
652 goto general16; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
653 break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
654 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
655 case 0x7fff: \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
656 if(fmt->Gmask == 0x03e0 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
657 || fmt->Rmask == 0x03e0 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
658 || fmt->Bmask == 0x03e0) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
659 if(alpha == 128) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
660 blitter(2, Uint8, ALPHA_BLIT16_555_50); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
661 else { \
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
662 if(SDL_HasMMX()) \
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
663 blitter(2, Uint8, ALPHA_BLIT16_555MMX); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
664 else \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
665 blitter(2, Uint8, ALPHA_BLIT16_555); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
666 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
667 break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
668 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
669 /* fallthrough */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
670 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
671 default: \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
672 general16: \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
673 blitter(2, Uint8, ALPHA_BLIT_ANY); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
674 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
675 break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
676 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
677 case 3: \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
678 blitter(3, Uint8, ALPHA_BLIT_ANY); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
679 break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
680 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
681 case 4: \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
682 if((fmt->Rmask | fmt->Gmask | fmt->Bmask) == 0x00ffffff \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
683 && (fmt->Gmask == 0xff00 || fmt->Rmask == 0xff00 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
684 || fmt->Bmask == 0xff00)) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
685 if(alpha == 128) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
686 { \
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
687 if(SDL_HasMMX()) \
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
688 blitter(4, Uint16, ALPHA_BLIT32_888_50MMX);\
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
689 else \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
690 blitter(4, Uint16, ALPHA_BLIT32_888_50);\
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
691 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
692 else \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
693 { \
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 689
diff changeset
694 if(SDL_HasMMX()) \
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
695 blitter(4, Uint16, ALPHA_BLIT32_888MMX);\
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
696 else \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
697 blitter(4, Uint16, ALPHA_BLIT32_888); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
698 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
699 } else \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
700 blitter(4, Uint16, ALPHA_BLIT_ANY); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
701 break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
702 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
703 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
704 } while(0)
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
705
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
706 #else
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
707
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
708 #define CHOOSE_BLIT(blitter, alpha, fmt) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
709 do { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
710 if(alpha == 255) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
711 switch(fmt->BytesPerPixel) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
712 case 1: blitter(1, Uint8, OPAQUE_BLIT); break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
713 case 2: blitter(2, Uint8, OPAQUE_BLIT); break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
714 case 3: blitter(3, Uint8, OPAQUE_BLIT); break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
715 case 4: blitter(4, Uint16, OPAQUE_BLIT); break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
716 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
717 } else { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
718 switch(fmt->BytesPerPixel) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
719 case 1: \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
720 /* No 8bpp alpha blitting */ \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
721 break; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
722 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
723 case 2: \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
724 switch(fmt->Rmask | fmt->Gmask | fmt->Bmask) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
725 case 0xffff: \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
726 if(fmt->Gmask == 0x07e0 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
727 || fmt->Rmask == 0x07e0 \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
728 || fmt->Bmask == 0x07e0) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
729 if(alpha == 128) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
730 blitter(2, Uint8, ALPHA_BLIT16_565_50); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
731 else { \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
732 blitter(2, Uint8, ALPHA_BLIT16_565); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
733 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
734 } else \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
735 goto general16; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
736 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
737 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
738 case 0x7fff: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
739 if(fmt->Gmask == 0x03e0 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
740 || fmt->Rmask == 0x03e0 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
741 || fmt->Bmask == 0x03e0) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
742 if(alpha == 128) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
743 blitter(2, Uint8, ALPHA_BLIT16_555_50); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
744 else { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
745 blitter(2, Uint8, ALPHA_BLIT16_555); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
746 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
747 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
748 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
749 /* fallthrough */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
750 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
751 default: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
752 general16: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
753 blitter(2, Uint8, ALPHA_BLIT_ANY); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
754 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
755 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
756 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
757 case 3: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
758 blitter(3, Uint8, ALPHA_BLIT_ANY); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
759 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
760 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
761 case 4: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
762 if((fmt->Rmask | fmt->Gmask | fmt->Bmask) == 0x00ffffff \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
763 && (fmt->Gmask == 0xff00 || fmt->Rmask == 0xff00 \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
764 || fmt->Bmask == 0xff00)) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
765 if(alpha == 128) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
766 blitter(4, Uint16, ALPHA_BLIT32_888_50); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
767 else \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
768 blitter(4, Uint16, ALPHA_BLIT32_888); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
769 } else \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
770 blitter(4, Uint16, ALPHA_BLIT_ANY); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
771 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
772 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
773 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
774 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
775
689
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
776 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
777
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
778 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
779 * This takes care of the case when the surface is clipped on the left and/or
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
780 * right. Top clipping has already been taken care of.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
781 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
782 static void RLEClipBlit(int w, Uint8 *srcbuf, SDL_Surface *dst,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
783 Uint8 *dstbuf, SDL_Rect *srcrect, unsigned alpha)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
784 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
785 SDL_PixelFormat *fmt = dst->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
786
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
787 #define RLECLIPBLIT(bpp, Type, do_blit) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
788 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
789 int linecount = srcrect->h; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
790 int ofs = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
791 int left = srcrect->x; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
792 int right = left + srcrect->w; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
793 dstbuf -= left * bpp; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
794 for(;;) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
795 int run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
796 ofs += *(Type *)srcbuf; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
797 run = ((Type *)srcbuf)[1]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
798 srcbuf += 2 * sizeof(Type); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
799 if(run) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
800 /* clip to left and right borders */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
801 if(ofs < right) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
802 int start = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
803 int len = run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
804 int startcol; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
805 if(left - ofs > 0) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
806 start = left - ofs; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
807 len -= start; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
808 if(len <= 0) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
809 goto nocopy ## bpp ## do_blit; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
810 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
811 startcol = ofs + start; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
812 if(len > right - startcol) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
813 len = right - startcol; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
814 do_blit(dstbuf + startcol * bpp, srcbuf + start * bpp, \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
815 len, bpp, alpha); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
816 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
817 nocopy ## bpp ## do_blit: \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
818 srcbuf += run * bpp; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
819 ofs += run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
820 } else if(!ofs) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
821 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
822 if(ofs == w) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
823 ofs = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
824 dstbuf += dst->pitch; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
825 if(!--linecount) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
826 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
827 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
828 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
829 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
830
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
831 CHOOSE_BLIT(RLECLIPBLIT, alpha, fmt);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
832
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
833 #undef RLECLIPBLIT
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
834
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
835 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
836
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
837
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
838 /* blit a colorkeyed RLE surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
839 int SDL_RLEBlit(SDL_Surface *src, SDL_Rect *srcrect,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
840 SDL_Surface *dst, SDL_Rect *dstrect)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
841 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
842 Uint8 *dstbuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
843 Uint8 *srcbuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
844 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
845 int w = src->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
846 unsigned alpha;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
847
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
848 /* Lock the destination if necessary */
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
849 if ( SDL_MUSTLOCK(dst) ) {
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
850 if ( SDL_LockSurface(dst) < 0 ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
851 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
852 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
853 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
854
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
855 /* Set up the source and destination pointers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
856 x = dstrect->x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
857 y = dstrect->y;
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
858 dstbuf = (Uint8 *)dst->pixels
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
859 + y * dst->pitch + x * src->format->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
860 srcbuf = (Uint8 *)src->map->sw_data->aux_data;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
861
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
862 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
863 /* skip lines at the top if neccessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
864 int vskip = srcrect->y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
865 int ofs = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
866 if(vskip) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
867
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
868 #define RLESKIP(bpp, Type) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
869 for(;;) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
870 int run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
871 ofs += *(Type *)srcbuf; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
872 run = ((Type *)srcbuf)[1]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
873 srcbuf += sizeof(Type) * 2; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
874 if(run) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
875 srcbuf += run * bpp; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
876 ofs += run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
877 } else if(!ofs) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
878 goto done; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
879 if(ofs == w) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
880 ofs = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
881 if(!--vskip) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
882 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
883 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
884 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
885
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
886 switch(src->format->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
887 case 1: RLESKIP(1, Uint8); break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
888 case 2: RLESKIP(2, Uint8); break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
889 case 3: RLESKIP(3, Uint8); break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
890 case 4: RLESKIP(4, Uint16); break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
891 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
892
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
893 #undef RLESKIP
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
894
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
895 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
896 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
897
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
898 alpha = (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
899 ? src->format->alpha : 255;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
900 /* if left or right edge clipping needed, call clip blit */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
901 if ( srcrect->x || srcrect->w != src->w ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
902 RLEClipBlit(w, srcbuf, dst, dstbuf, srcrect, alpha);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
903 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
904 SDL_PixelFormat *fmt = src->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
905
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
906 #define RLEBLIT(bpp, Type, do_blit) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
907 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
908 int linecount = srcrect->h; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
909 int ofs = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
910 for(;;) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
911 unsigned run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
912 ofs += *(Type *)srcbuf; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
913 run = ((Type *)srcbuf)[1]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
914 srcbuf += 2 * sizeof(Type); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
915 if(run) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
916 do_blit(dstbuf + ofs * bpp, srcbuf, run, bpp, alpha); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
917 srcbuf += run * bpp; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
918 ofs += run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
919 } else if(!ofs) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
920 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
921 if(ofs == w) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
922 ofs = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
923 dstbuf += dst->pitch; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
924 if(!--linecount) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
925 break; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
926 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
927 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
928 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
929
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
930 CHOOSE_BLIT(RLEBLIT, alpha, fmt);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
931
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
932 #undef RLEBLIT
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
933 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
934
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
935 done:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
936 /* Unlock the destination if necessary */
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
937 if ( SDL_MUSTLOCK(dst) ) {
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
938 SDL_UnlockSurface(dst);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
939 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
940 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
941 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
942
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
943 #undef OPAQUE_BLIT
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
944
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
945 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
946 * Per-pixel blitting macros for translucent pixels:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
947 * These use the same techniques as the per-surface blitting macros
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
948 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
949
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
950 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
951 * For 32bpp pixels, we have made sure the alpha is stored in the top
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
952 * 8 bits, so proceed as usual
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
953 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
954 #define BLIT_TRANSL_888(src, dst) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
955 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
956 Uint32 s = src; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
957 Uint32 d = dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
958 unsigned alpha = s >> 24; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
959 Uint32 s1 = s & 0xff00ff; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
960 Uint32 d1 = d & 0xff00ff; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
961 d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
962 s &= 0xff00; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
963 d &= 0xff00; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
964 d = (d + ((s - d) * alpha >> 8)) & 0xff00; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
965 dst = d1 | d; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
966 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
967
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
968 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
969 * For 16bpp pixels, we have stored the 5 most significant alpha bits in
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
970 * bits 5-10. As before, we can process all 3 RGB components at the same time.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
971 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
972 #define BLIT_TRANSL_565(src, dst) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
973 do { \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
974 Uint32 s = src; \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
975 Uint32 d = dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
976 unsigned alpha = (s & 0x3e0) >> 5; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
977 s &= 0x07e0f81f; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
978 d = (d | d << 16) & 0x07e0f81f; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
979 d += (s - d) * alpha >> 5; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
980 d &= 0x07e0f81f; \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
981 dst = (Uint16)(d | d >> 16); \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
982 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
983
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
984 #define BLIT_TRANSL_555(src, dst) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
985 do { \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
986 Uint32 s = src; \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
987 Uint32 d = dst; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
988 unsigned alpha = (s & 0x3e0) >> 5; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
989 s &= 0x03e07c1f; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
990 d = (d | d << 16) & 0x03e07c1f; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
991 d += (s - d) * alpha >> 5; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
992 d &= 0x03e07c1f; \
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
993 dst = (Uint16)(d | d >> 16); \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
994 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
995
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
996 /* used to save the destination format in the encoding. Designed to be
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
997 macro-compatible with SDL_PixelFormat but without the unneeded fields */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
998 typedef struct {
1428
5f52867ba65c Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
999 Uint8 BytesPerPixel;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1000 Uint8 Rloss;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1001 Uint8 Gloss;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1002 Uint8 Bloss;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1003 Uint8 Rshift;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1004 Uint8 Gshift;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1005 Uint8 Bshift;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1006 Uint8 Ashift;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1007 Uint32 Rmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1008 Uint32 Gmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1009 Uint32 Bmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1010 Uint32 Amask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1011 } RLEDestFormat;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1012
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1013 /* blit a pixel-alpha RLE surface clipped at the right and/or left edges */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1014 static void RLEAlphaClipBlit(int w, Uint8 *srcbuf, SDL_Surface *dst,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1015 Uint8 *dstbuf, SDL_Rect *srcrect)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1016 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1017 SDL_PixelFormat *df = dst->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1018 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1019 * clipped blitter: Ptype is the destination pixel type,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1020 * Ctype the translucent count type, and do_blend the macro
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1021 * to blend one pixel.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1022 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1023 #define RLEALPHACLIPBLIT(Ptype, Ctype, do_blend) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1024 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1025 int linecount = srcrect->h; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1026 int left = srcrect->x; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1027 int right = left + srcrect->w; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1028 dstbuf -= left * sizeof(Ptype); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1029 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1030 int ofs = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1031 /* blit opaque pixels on one line */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1032 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1033 unsigned run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1034 ofs += ((Ctype *)srcbuf)[0]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1035 run = ((Ctype *)srcbuf)[1]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1036 srcbuf += 2 * sizeof(Ctype); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1037 if(run) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1038 /* clip to left and right borders */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1039 int cofs = ofs; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1040 int crun = run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1041 if(left - cofs > 0) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1042 crun -= left - cofs; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1043 cofs = left; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1044 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1045 if(crun > right - cofs) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1046 crun = right - cofs; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1047 if(crun > 0) \
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1048 PIXEL_COPY(dstbuf + cofs * sizeof(Ptype), \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1049 srcbuf + (cofs - ofs) * sizeof(Ptype), \
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1050 (unsigned)crun, sizeof(Ptype)); \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1051 srcbuf += run * sizeof(Ptype); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1052 ofs += run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1053 } else if(!ofs) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1054 return; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1055 } while(ofs < w); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1056 /* skip padding if necessary */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1057 if(sizeof(Ptype) == 2) \
1456
84de7511f79f Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1058 srcbuf += (uintptr_t)srcbuf & 2; \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1059 /* blit translucent pixels on the same line */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1060 ofs = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1061 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1062 unsigned run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1063 ofs += ((Uint16 *)srcbuf)[0]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1064 run = ((Uint16 *)srcbuf)[1]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1065 srcbuf += 4; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1066 if(run) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1067 /* clip to left and right borders */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1068 int cofs = ofs; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1069 int crun = run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1070 if(left - cofs > 0) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1071 crun -= left - cofs; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1072 cofs = left; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1073 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1074 if(crun > right - cofs) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1075 crun = right - cofs; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1076 if(crun > 0) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1077 Ptype *dst = (Ptype *)dstbuf + cofs; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1078 Uint32 *src = (Uint32 *)srcbuf + (cofs - ofs); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1079 int i; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1080 for(i = 0; i < crun; i++) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1081 do_blend(src[i], dst[i]); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1082 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1083 srcbuf += run * 4; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1084 ofs += run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1085 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1086 } while(ofs < w); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1087 dstbuf += dst->pitch; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1088 } while(--linecount); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1089 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1090
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1091 switch(df->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1092 case 2:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1093 if(df->Gmask == 0x07e0 || df->Rmask == 0x07e0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1094 || df->Bmask == 0x07e0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1095 RLEALPHACLIPBLIT(Uint16, Uint8, BLIT_TRANSL_565);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1096 else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1097 RLEALPHACLIPBLIT(Uint16, Uint8, BLIT_TRANSL_555);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1098 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1099 case 4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1100 RLEALPHACLIPBLIT(Uint32, Uint16, BLIT_TRANSL_888);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1101 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1102 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1103 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1104
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1105 /* blit a pixel-alpha RLE surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1106 int SDL_RLEAlphaBlit(SDL_Surface *src, SDL_Rect *srcrect,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1107 SDL_Surface *dst, SDL_Rect *dstrect)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1108 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1109 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1110 int w = src->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1111 Uint8 *srcbuf, *dstbuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1112 SDL_PixelFormat *df = dst->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1113
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1114 /* Lock the destination if necessary */
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1115 if ( SDL_MUSTLOCK(dst) ) {
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1116 if ( SDL_LockSurface(dst) < 0 ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1117 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1118 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1119 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1120
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1121 x = dstrect->x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1122 y = dstrect->y;
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1123 dstbuf = (Uint8 *)dst->pixels
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1124 + y * dst->pitch + x * df->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1125 srcbuf = (Uint8 *)src->map->sw_data->aux_data + sizeof(RLEDestFormat);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1126
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1127 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1128 /* skip lines at the top if necessary */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1129 int vskip = srcrect->y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1130 if(vskip) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1131 int ofs;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1132 if(df->BytesPerPixel == 2) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1133 /* the 16/32 interleaved format */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1134 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1135 /* skip opaque line */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1136 ofs = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1137 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1138 int run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1139 ofs += srcbuf[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1140 run = srcbuf[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1141 srcbuf += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1142 if(run) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1143 srcbuf += 2 * run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1144 ofs += run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1145 } else if(!ofs)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1146 goto done;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1147 } while(ofs < w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1148
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1149 /* skip padding */
1456
84de7511f79f Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1150 srcbuf += (uintptr_t)srcbuf & 2;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1151
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1152 /* skip translucent line */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1153 ofs = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1154 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1155 int run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1156 ofs += ((Uint16 *)srcbuf)[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1157 run = ((Uint16 *)srcbuf)[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1158 srcbuf += 4 * (run + 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1159 ofs += run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1160 } while(ofs < w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1161 } while(--vskip);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1162 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1163 /* the 32/32 interleaved format */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1164 vskip <<= 1; /* opaque and translucent have same format */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1165 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1166 ofs = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1167 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1168 int run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1169 ofs += ((Uint16 *)srcbuf)[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1170 run = ((Uint16 *)srcbuf)[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1171 srcbuf += 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1172 if(run) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1173 srcbuf += 4 * run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1174 ofs += run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1175 } else if(!ofs)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1176 goto done;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1177 } while(ofs < w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1178 } while(--vskip);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1179 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1180 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1181 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1182
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1183 /* if left or right edge clipping needed, call clip blit */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1184 if(srcrect->x || srcrect->w != src->w) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1185 RLEAlphaClipBlit(w, srcbuf, dst, dstbuf, srcrect);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1186 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1187
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1188 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1189 * non-clipped blitter. Ptype is the destination pixel type,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1190 * Ctype the translucent count type, and do_blend the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1191 * macro to blend one pixel.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1192 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1193 #define RLEALPHABLIT(Ptype, Ctype, do_blend) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1194 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1195 int linecount = srcrect->h; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1196 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1197 int ofs = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1198 /* blit opaque pixels on one line */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1199 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1200 unsigned run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1201 ofs += ((Ctype *)srcbuf)[0]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1202 run = ((Ctype *)srcbuf)[1]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1203 srcbuf += 2 * sizeof(Ctype); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1204 if(run) { \
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1205 PIXEL_COPY(dstbuf + ofs * sizeof(Ptype), srcbuf, \
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
1206 run, sizeof(Ptype)); \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1207 srcbuf += run * sizeof(Ptype); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1208 ofs += run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1209 } else if(!ofs) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1210 goto done; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1211 } while(ofs < w); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1212 /* skip padding if necessary */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1213 if(sizeof(Ptype) == 2) \
1456
84de7511f79f Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1214 srcbuf += (uintptr_t)srcbuf & 2; \
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1215 /* blit translucent pixels on the same line */ \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1216 ofs = 0; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1217 do { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1218 unsigned run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1219 ofs += ((Uint16 *)srcbuf)[0]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1220 run = ((Uint16 *)srcbuf)[1]; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1221 srcbuf += 4; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1222 if(run) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1223 Ptype *dst = (Ptype *)dstbuf + ofs; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1224 unsigned i; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1225 for(i = 0; i < run; i++) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1226 Uint32 src = *(Uint32 *)srcbuf; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1227 do_blend(src, *dst); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1228 srcbuf += 4; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1229 dst++; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1230 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1231 ofs += run; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1232 } \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1233 } while(ofs < w); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1234 dstbuf += dst->pitch; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1235 } while(--linecount); \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1236 } while(0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1237
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1238 switch(df->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1239 case 2:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1240 if(df->Gmask == 0x07e0 || df->Rmask == 0x07e0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1241 || df->Bmask == 0x07e0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1242 RLEALPHABLIT(Uint16, Uint8, BLIT_TRANSL_565);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1243 else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1244 RLEALPHABLIT(Uint16, Uint8, BLIT_TRANSL_555);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1245 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1246 case 4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1247 RLEALPHABLIT(Uint32, Uint16, BLIT_TRANSL_888);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1248 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1249 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1250 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1251
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1252 done:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1253 /* Unlock the destination if necessary */
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1254 if ( SDL_MUSTLOCK(dst) ) {
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1255 SDL_UnlockSurface(dst);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1256 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1257 return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1258 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1259
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1260 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1261 * Auxiliary functions:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1262 * The encoding functions take 32bpp rgb + a, and
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1263 * return the number of bytes copied to the destination.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1264 * The decoding functions copy to 32bpp rgb + a, and
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1265 * return the number of bytes copied from the source.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1266 * These are only used in the encoder and un-RLE code and are therefore not
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1267 * highly optimised.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1268 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1269
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1270 /* encode 32bpp rgb + a into 16bpp rgb, losing alpha */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1271 static int copy_opaque_16(void *dst, Uint32 *src, int n,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1272 SDL_PixelFormat *sfmt, SDL_PixelFormat *dfmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1273 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1274 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1275 Uint16 *d = dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1276 for(i = 0; i < n; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1277 unsigned r, g, b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1278 RGB_FROM_PIXEL(*src, sfmt, r, g, b);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1279 PIXEL_FROM_RGB(*d, dfmt, r, g, b);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1280 src++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1281 d++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1282 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1283 return n * 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1284 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1285
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1286 /* decode opaque pixels from 16bpp to 32bpp rgb + a */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1287 static int uncopy_opaque_16(Uint32 *dst, void *src, int n,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1288 RLEDestFormat *sfmt, SDL_PixelFormat *dfmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1289 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1290 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1291 Uint16 *s = src;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1292 unsigned alpha = dfmt->Amask ? 255 : 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1293 for(i = 0; i < n; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1294 unsigned r, g, b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1295 RGB_FROM_PIXEL(*s, sfmt, r, g, b);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1296 PIXEL_FROM_RGBA(*dst, dfmt, r, g, b, alpha);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1297 s++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1298 dst++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1299 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1300 return n * 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1301 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1302
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1303
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1304
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1305 /* encode 32bpp rgb + a into 32bpp G0RAB format for blitting into 565 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1306 static int copy_transl_565(void *dst, Uint32 *src, int n,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1307 SDL_PixelFormat *sfmt, SDL_PixelFormat *dfmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1308 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1309 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1310 Uint32 *d = dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1311 for(i = 0; i < n; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1312 unsigned r, g, b, a;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1313 Uint16 pix;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1314 RGBA_FROM_8888(*src, sfmt, r, g, b, a);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1315 PIXEL_FROM_RGB(pix, dfmt, r, g, b);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1316 *d = ((pix & 0x7e0) << 16) | (pix & 0xf81f) | ((a << 2) & 0x7e0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1317 src++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1318 d++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1319 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1320 return n * 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1321 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1322
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1323 /* encode 32bpp rgb + a into 32bpp G0RAB format for blitting into 555 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1324 static int copy_transl_555(void *dst, Uint32 *src, int n,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1325 SDL_PixelFormat *sfmt, SDL_PixelFormat *dfmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1326 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1327 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1328 Uint32 *d = dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1329 for(i = 0; i < n; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1330 unsigned r, g, b, a;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1331 Uint16 pix;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1332 RGBA_FROM_8888(*src, sfmt, r, g, b, a);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1333 PIXEL_FROM_RGB(pix, dfmt, r, g, b);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1334 *d = ((pix & 0x3e0) << 16) | (pix & 0xfc1f) | ((a << 2) & 0x3e0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1335 src++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1336 d++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1337 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1338 return n * 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1339 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1340
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1341 /* decode translucent pixels from 32bpp GORAB to 32bpp rgb + a */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1342 static int uncopy_transl_16(Uint32 *dst, void *src, int n,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1343 RLEDestFormat *sfmt, SDL_PixelFormat *dfmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1344 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1345 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1346 Uint32 *s = src;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1347 for(i = 0; i < n; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1348 unsigned r, g, b, a;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1349 Uint32 pix = *s++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1350 a = (pix & 0x3e0) >> 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1351 pix = (pix & ~0x3e0) | pix >> 16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1352 RGB_FROM_PIXEL(pix, sfmt, r, g, b);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1353 PIXEL_FROM_RGBA(*dst, dfmt, r, g, b, a);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1354 dst++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1355 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1356 return n * 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1357 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1358
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1359 /* encode 32bpp rgba into 32bpp rgba, keeping alpha (dual purpose) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1360 static int copy_32(void *dst, Uint32 *src, int n,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1361 SDL_PixelFormat *sfmt, SDL_PixelFormat *dfmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1362 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1363 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1364 Uint32 *d = dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1365 for(i = 0; i < n; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1366 unsigned r, g, b, a;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1367 Uint32 pixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1368 RGBA_FROM_8888(*src, sfmt, r, g, b, a);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1369 PIXEL_FROM_RGB(pixel, dfmt, r, g, b);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1370 *d++ = pixel | a << 24;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1371 src++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1372 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1373 return n * 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1374 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1375
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1376 /* decode 32bpp rgba into 32bpp rgba, keeping alpha (dual purpose) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1377 static int uncopy_32(Uint32 *dst, void *src, int n,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1378 RLEDestFormat *sfmt, SDL_PixelFormat *dfmt)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1379 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1380 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1381 Uint32 *s = src;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1382 for(i = 0; i < n; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1383 unsigned r, g, b, a;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1384 Uint32 pixel = *s++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1385 RGB_FROM_PIXEL(pixel, sfmt, r, g, b);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1386 a = pixel >> 24;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1387 PIXEL_FROM_RGBA(*dst, dfmt, r, g, b, a);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1388 dst++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1389 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1390 return n * 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1391 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1392
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1393 #define ISOPAQUE(pixel, fmt) ((((pixel) & fmt->Amask) >> fmt->Ashift) == 255)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1394
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1395 #define ISTRANSL(pixel, fmt) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1396 ((unsigned)((((pixel) & fmt->Amask) >> fmt->Ashift) - 1U) < 254U)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1397
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1398 /* convert surface to be quickly alpha-blittable onto dest, if possible */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1399 static int RLEAlphaSurface(SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1400 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1401 SDL_Surface *dest;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1402 SDL_PixelFormat *df;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1403 int maxsize = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1404 int max_opaque_run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1405 int max_transl_run = 65535;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1406 unsigned masksum;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1407 Uint8 *rlebuf, *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1408 int (*copy_opaque)(void *, Uint32 *, int,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1409 SDL_PixelFormat *, SDL_PixelFormat *);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1410 int (*copy_transl)(void *, Uint32 *, int,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1411 SDL_PixelFormat *, SDL_PixelFormat *);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1412
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1413 dest = surface->map->dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1414 if(!dest)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1415 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1416 df = dest->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1417 if(surface->format->BitsPerPixel != 32)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1418 return -1; /* only 32bpp source supported */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1419
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1420 /* find out whether the destination is one we support,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1421 and determine the max size of the encoded result */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1422 masksum = df->Rmask | df->Gmask | df->Bmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1423 switch(df->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1424 case 2:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1425 /* 16bpp: only support 565 and 555 formats */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1426 switch(masksum) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1427 case 0xffff:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1428 if(df->Gmask == 0x07e0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1429 || df->Rmask == 0x07e0 || df->Bmask == 0x07e0) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1430 copy_opaque = copy_opaque_16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1431 copy_transl = copy_transl_565;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1432 } else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1433 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1434 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1435 case 0x7fff:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1436 if(df->Gmask == 0x03e0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1437 || df->Rmask == 0x03e0 || df->Bmask == 0x03e0) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1438 copy_opaque = copy_opaque_16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1439 copy_transl = copy_transl_555;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1440 } else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1441 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1442 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1443 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1444 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1445 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1446 max_opaque_run = 255; /* runs stored as bytes */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1447
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1448 /* worst case is alternating opaque and translucent pixels,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1449 with room for alignment padding between lines */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1450 maxsize = surface->h * (2 + (4 + 2) * (surface->w + 1)) + 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1451 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1452 case 4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1453 if(masksum != 0x00ffffff)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1454 return -1; /* requires unused high byte */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1455 copy_opaque = copy_32;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1456 copy_transl = copy_32;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1457 max_opaque_run = 255; /* runs stored as short ints */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1458
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1459 /* worst case is alternating opaque and translucent pixels */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1460 maxsize = surface->h * 2 * 4 * (surface->w + 1) + 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1461 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1462 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1463 return -1; /* anything else unsupported right now */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1464 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1465
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1466 maxsize += sizeof(RLEDestFormat);
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1467 rlebuf = (Uint8 *)SDL_malloc(maxsize);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1468 if(!rlebuf) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1469 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1470 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1471 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1472 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1473 /* save the destination format so we can undo the encoding later */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1474 RLEDestFormat *r = (RLEDestFormat *)rlebuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1475 r->BytesPerPixel = df->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1476 r->Rloss = df->Rloss;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1477 r->Gloss = df->Gloss;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1478 r->Bloss = df->Bloss;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1479 r->Rshift = df->Rshift;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1480 r->Gshift = df->Gshift;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1481 r->Bshift = df->Bshift;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1482 r->Ashift = df->Ashift;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1483 r->Rmask = df->Rmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1484 r->Gmask = df->Gmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1485 r->Bmask = df->Bmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1486 r->Amask = df->Amask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1487 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1488 dst = rlebuf + sizeof(RLEDestFormat);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1489
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1490 /* Do the actual encoding */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1491 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1492 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1493 int h = surface->h, w = surface->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1494 SDL_PixelFormat *sf = surface->format;
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1495 Uint32 *src = (Uint32 *)surface->pixels;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1496 Uint8 *lastline = dst; /* end of last non-blank line */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1497
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1498 /* opaque counts are 8 or 16 bits, depending on target depth */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1499 #define ADD_OPAQUE_COUNTS(n, m) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1500 if(df->BytesPerPixel == 4) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1501 ((Uint16 *)dst)[0] = n; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1502 ((Uint16 *)dst)[1] = m; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1503 dst += 4; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1504 } else { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1505 dst[0] = n; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1506 dst[1] = m; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1507 dst += 2; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1508 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1509
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1510 /* translucent counts are always 16 bit */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1511 #define ADD_TRANSL_COUNTS(n, m) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1512 (((Uint16 *)dst)[0] = n, ((Uint16 *)dst)[1] = m, dst += 4)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1513
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1514 for(y = 0; y < h; y++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1515 int runstart, skipstart;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1516 int blankline = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1517 /* First encode all opaque pixels of a scan line */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1518 x = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1519 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1520 int run, skip, len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1521 skipstart = x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1522 while(x < w && !ISOPAQUE(src[x], sf))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1523 x++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1524 runstart = x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1525 while(x < w && ISOPAQUE(src[x], sf))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1526 x++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1527 skip = runstart - skipstart;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1528 if(skip == w)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1529 blankline = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1530 run = x - runstart;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1531 while(skip > max_opaque_run) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1532 ADD_OPAQUE_COUNTS(max_opaque_run, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1533 skip -= max_opaque_run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1534 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1535 len = MIN(run, max_opaque_run);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1536 ADD_OPAQUE_COUNTS(skip, len);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1537 dst += copy_opaque(dst, src + runstart, len, sf, df);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1538 runstart += len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1539 run -= len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1540 while(run) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1541 len = MIN(run, max_opaque_run);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1542 ADD_OPAQUE_COUNTS(0, len);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1543 dst += copy_opaque(dst, src + runstart, len, sf, df);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1544 runstart += len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1545 run -= len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1546 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1547 } while(x < w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1548
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1549 /* Make sure the next output address is 32-bit aligned */
1456
84de7511f79f Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1550 dst += (uintptr_t)dst & 2;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1551
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1552 /* Next, encode all translucent pixels of the same scan line */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1553 x = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1554 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1555 int run, skip, len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1556 skipstart = x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1557 while(x < w && !ISTRANSL(src[x], sf))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1558 x++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1559 runstart = x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1560 while(x < w && ISTRANSL(src[x], sf))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1561 x++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1562 skip = runstart - skipstart;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1563 blankline &= (skip == w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1564 run = x - runstart;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1565 while(skip > max_transl_run) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1566 ADD_TRANSL_COUNTS(max_transl_run, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1567 skip -= max_transl_run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1568 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1569 len = MIN(run, max_transl_run);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1570 ADD_TRANSL_COUNTS(skip, len);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1571 dst += copy_transl(dst, src + runstart, len, sf, df);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1572 runstart += len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1573 run -= len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1574 while(run) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1575 len = MIN(run, max_transl_run);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1576 ADD_TRANSL_COUNTS(0, len);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1577 dst += copy_transl(dst, src + runstart, len, sf, df);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1578 runstart += len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1579 run -= len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1580 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1581 if(!blankline)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1582 lastline = dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1583 } while(x < w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1584
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1585 src += surface->pitch >> 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1586 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1587 dst = lastline; /* back up past trailing blank lines */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1588 ADD_OPAQUE_COUNTS(0, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1589 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1590
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1591 #undef ADD_OPAQUE_COUNTS
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1592 #undef ADD_TRANSL_COUNTS
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1593
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1594 /* Now that we have it encoded, release the original pixels */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1595 if((surface->flags & SDL_PREALLOC) != SDL_PREALLOC
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1596 && (surface->flags & SDL_HWSURFACE) != SDL_HWSURFACE) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1597 SDL_free( surface->pixels );
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1598 surface->pixels = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1599 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1600
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1601 /* realloc the buffer to release unused memory */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1602 {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1603 Uint8 *p = SDL_realloc(rlebuf, dst - rlebuf);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1604 if(!p)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1605 p = rlebuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1606 surface->map->sw_data->aux_data = p;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1607 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1608
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1609 return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1610 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1611
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1612 static Uint32 getpix_8(Uint8 *srcbuf)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1613 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1614 return *srcbuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1615 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1616
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1617 static Uint32 getpix_16(Uint8 *srcbuf)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1618 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1619 return *(Uint16 *)srcbuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1620 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1621
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1622 static Uint32 getpix_24(Uint8 *srcbuf)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1623 {
1155
91569ec25acd Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents: 944
diff changeset
1624 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
91569ec25acd Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents: 944
diff changeset
1625 return srcbuf[0] + (srcbuf[1] << 8) + (srcbuf[2] << 16);
91569ec25acd Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents: 944
diff changeset
1626 #else
91569ec25acd Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents: 944
diff changeset
1627 return (srcbuf[0] << 16) + (srcbuf[1] << 8) + srcbuf[2];
91569ec25acd Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents: 944
diff changeset
1628 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1629 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1630
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1631 static Uint32 getpix_32(Uint8 *srcbuf)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1632 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1633 return *(Uint32 *)srcbuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1634 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1635
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1636 typedef Uint32 (*getpix_func)(Uint8 *);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1637
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1638 static getpix_func getpixes[4] = {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1639 getpix_8, getpix_16, getpix_24, getpix_32
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1640 };
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1641
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1642 static int RLEColorkeySurface(SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1643 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1644 Uint8 *rlebuf, *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1645 int maxn;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1646 int y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1647 Uint8 *srcbuf, *curbuf, *lastline;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1648 int maxsize = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1649 int skip, run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1650 int bpp = surface->format->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1651 getpix_func getpix;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1652 Uint32 ckey, rgbmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1653 int w, h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1654
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1655 /* calculate the worst case size for the compressed surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1656 switch(bpp) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1657 case 1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1658 /* worst case is alternating opaque and transparent pixels,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1659 starting with an opaque pixel */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1660 maxsize = surface->h * 3 * (surface->w / 2 + 1) + 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1661 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1662 case 2:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1663 case 3:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1664 /* worst case is solid runs, at most 255 pixels wide */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1665 maxsize = surface->h * (2 * (surface->w / 255 + 1)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1666 + surface->w * bpp) + 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1667 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1668 case 4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1669 /* worst case is solid runs, at most 65535 pixels wide */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1670 maxsize = surface->h * (4 * (surface->w / 65535 + 1)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1671 + surface->w * 4) + 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1672 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1673 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1674
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1675 rlebuf = (Uint8 *)SDL_malloc(maxsize);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1676 if ( rlebuf == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1677 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1678 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1679 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1680
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1681 /* Set up the conversion */
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1682 srcbuf = (Uint8 *)surface->pixels;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1683 curbuf = srcbuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1684 maxn = bpp == 4 ? 65535 : 255;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1685 skip = run = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1686 dst = rlebuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1687 rgbmask = ~surface->format->Amask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1688 ckey = surface->format->colorkey & rgbmask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1689 lastline = dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1690 getpix = getpixes[bpp - 1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1691 w = surface->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1692 h = surface->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1693
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1694 #define ADD_COUNTS(n, m) \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1695 if(bpp == 4) { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1696 ((Uint16 *)dst)[0] = n; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1697 ((Uint16 *)dst)[1] = m; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1698 dst += 4; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1699 } else { \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1700 dst[0] = n; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1701 dst[1] = m; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1702 dst += 2; \
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1703 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1704
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1705 for(y = 0; y < h; y++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1706 int x = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1707 int blankline = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1708 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1709 int run, skip, len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1710 int runstart;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1711 int skipstart = x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1712
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1713 /* find run of transparent, then opaque pixels */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1714 while(x < w && (getpix(srcbuf + x * bpp) & rgbmask) == ckey)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1715 x++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1716 runstart = x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1717 while(x < w && (getpix(srcbuf + x * bpp) & rgbmask) != ckey)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1718 x++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1719 skip = runstart - skipstart;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1720 if(skip == w)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1721 blankline = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1722 run = x - runstart;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1723
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1724 /* encode segment */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1725 while(skip > maxn) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1726 ADD_COUNTS(maxn, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1727 skip -= maxn;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1728 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1729 len = MIN(run, maxn);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1730 ADD_COUNTS(skip, len);
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1731 SDL_memcpy(dst, srcbuf + runstart * bpp, len * bpp);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1732 dst += len * bpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1733 run -= len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1734 runstart += len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1735 while(run) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1736 len = MIN(run, maxn);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1737 ADD_COUNTS(0, len);
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1738 SDL_memcpy(dst, srcbuf + runstart * bpp, len * bpp);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1739 dst += len * bpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1740 runstart += len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1741 run -= len;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1742 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1743 if(!blankline)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1744 lastline = dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1745 } while(x < w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1746
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1747 srcbuf += surface->pitch;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1748 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1749 dst = lastline; /* back up bast trailing blank lines */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1750 ADD_COUNTS(0, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1751
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1752 #undef ADD_COUNTS
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1753
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1754 /* Now that we have it encoded, release the original pixels */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1755 if((surface->flags & SDL_PREALLOC) != SDL_PREALLOC
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1756 && (surface->flags & SDL_HWSURFACE) != SDL_HWSURFACE) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1757 SDL_free( surface->pixels );
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1758 surface->pixels = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1759 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1760
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1761 /* realloc the buffer to release unused memory */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1762 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1763 /* If realloc returns NULL, the original block is left intact */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1764 Uint8 *p = SDL_realloc(rlebuf, dst - rlebuf);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1765 if(!p)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1766 p = rlebuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1767 surface->map->sw_data->aux_data = p;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1768 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1769
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1770 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1771 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1772
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1773 int SDL_RLESurface(SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1774 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1775 int retcode;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1776
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1777 /* Clear any previous RLE conversion */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1778 if ( (surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1779 SDL_UnRLESurface(surface, 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1780 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1781
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1782 /* We don't support RLE encoding of bitmaps */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1783 if ( surface->format->BitsPerPixel < 8 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1784 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1785 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1786
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1787 /* Lock the surface if it's in hardware */
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1788 if ( SDL_MUSTLOCK(surface) ) {
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1789 if ( SDL_LockSurface(surface) < 0 ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1790 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1791 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1792 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1793
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1794 /* Encode */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1795 if((surface->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1796 retcode = RLEColorkeySurface(surface);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1797 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1798 if((surface->flags & SDL_SRCALPHA) == SDL_SRCALPHA
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1799 && surface->format->Amask != 0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1800 retcode = RLEAlphaSurface(surface);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1801 else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1802 retcode = -1; /* no RLE for per-surface alpha sans ckey */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1803 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1804
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1805 /* Unlock the surface if it's in hardware */
526
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1806 if ( SDL_MUSTLOCK(surface) ) {
4314a501d7be Fixed a crash blitting RLE surfaces to RLE surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
1807 SDL_UnlockSurface(surface);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1808 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1809
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1810 if(retcode < 0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1811 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1812
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1813 /* The surface is now accelerated */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1814 surface->flags |= SDL_RLEACCEL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1815
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1816 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1817 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1818
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1819 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1820 * Un-RLE a surface with pixel alpha
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1821 * This may not give back exactly the image before RLE-encoding; all
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1822 * completely transparent pixels will be lost, and colour and alpha depth
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1823 * may have been reduced (when encoding for 16bpp targets).
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1824 */
944
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1825 static SDL_bool UnRLEAlpha(SDL_Surface *surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1826 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1827 Uint8 *srcbuf;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1828 Uint32 *dst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1829 SDL_PixelFormat *sf = surface->format;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1830 RLEDestFormat *df = surface->map->sw_data->aux_data;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1831 int (*uncopy_opaque)(Uint32 *, void *, int,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1832 RLEDestFormat *, SDL_PixelFormat *);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1833 int (*uncopy_transl)(Uint32 *, void *, int,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1834 RLEDestFormat *, SDL_PixelFormat *);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1835 int w = surface->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1836 int bpp = df->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1837
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1838 if(bpp == 2) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1839 uncopy_opaque = uncopy_opaque_16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1840 uncopy_transl = uncopy_transl_16;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1841 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1842 uncopy_opaque = uncopy_transl = uncopy_32;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1843 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1844
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1845 surface->pixels = SDL_malloc(surface->h * surface->pitch);
944
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1846 if ( !surface->pixels ) {
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1847 return(SDL_FALSE);
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1848 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1849 /* fill background with transparent pixels */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1850 SDL_memset(surface->pixels, 0, surface->h * surface->pitch);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1851
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1852 dst = surface->pixels;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1853 srcbuf = (Uint8 *)(df + 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1854 for(;;) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1855 /* copy opaque pixels */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1856 int ofs = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1857 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1858 unsigned run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1859 if(bpp == 2) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1860 ofs += srcbuf[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1861 run = srcbuf[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1862 srcbuf += 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1863 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1864 ofs += ((Uint16 *)srcbuf)[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1865 run = ((Uint16 *)srcbuf)[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1866 srcbuf += 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1867 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1868 if(run) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1869 srcbuf += uncopy_opaque(dst + ofs, srcbuf, run, df, sf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1870 ofs += run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1871 } else if(!ofs)
944
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1872 return(SDL_TRUE);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1873 } while(ofs < w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1874
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1875 /* skip padding if needed */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1876 if(bpp == 2)
1456
84de7511f79f Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents: 1428
diff changeset
1877 srcbuf += (uintptr_t)srcbuf & 2;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1878
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1879 /* copy translucent pixels */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1880 ofs = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1881 do {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1882 unsigned run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1883 ofs += ((Uint16 *)srcbuf)[0];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1884 run = ((Uint16 *)srcbuf)[1];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1885 srcbuf += 4;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1886 if(run) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1887 srcbuf += uncopy_transl(dst + ofs, srcbuf, run, df, sf);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1888 ofs += run;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1889 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1890 } while(ofs < w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1891 dst += surface->pitch >> 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1892 }
944
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1893 /* Make the compiler happy */
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1894 return(SDL_TRUE);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1895 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1896
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1897 void SDL_UnRLESurface(SDL_Surface *surface, int recode)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1898 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1899 if ( (surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1900 surface->flags &= ~SDL_RLEACCEL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1901
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1902 if(recode && (surface->flags & SDL_PREALLOC) != SDL_PREALLOC
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1903 && (surface->flags & SDL_HWSURFACE) != SDL_HWSURFACE) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1904 if((surface->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1905 SDL_Rect full;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1906 unsigned alpha_flag;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1907
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1908 /* re-create the original surface */
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1909 surface->pixels = SDL_malloc(surface->h * surface->pitch);
944
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1910 if ( !surface->pixels ) {
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1911 /* Oh crap... */
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1912 surface->flags |= SDL_RLEACCEL;
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1913 return;
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1914 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1915
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1916 /* fill it with the background colour */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1917 SDL_FillRect(surface, NULL, surface->format->colorkey);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1918
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1919 /* now render the encoded surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1920 full.x = full.y = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1921 full.w = surface->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1922 full.h = surface->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1923 alpha_flag = surface->flags & SDL_SRCALPHA;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1924 surface->flags &= ~SDL_SRCALPHA; /* opaque blit */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1925 SDL_RLEBlit(surface, &full, surface, &full);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1926 surface->flags |= alpha_flag;
944
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1927 } else {
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1928 if ( !UnRLEAlpha(surface) ) {
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1929 /* Oh crap... */
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1930 surface->flags |= SDL_RLEACCEL;
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1931 return;
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1932 }
cdea7cbc3e23 Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents: 880
diff changeset
1933 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1934 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1935
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1936 if ( surface->map && surface->map->sw_data->aux_data ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
1937 SDL_free(surface->map->sw_data->aux_data);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1938 surface->map->sw_data->aux_data = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1939 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1940 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1941 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1942
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1943