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annotate src/video/SDL_fill.c @ 2702:11eb9ae3c88c

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Reverted revision 3416, fixing bug #589 http://bugzilla.libsdl.org/show_bug.cgi?id=589 I was going to add the current window to the OpenGL context info, but that doesn't fix the case where you set the current context to NULL and then set the current context to the same window it had before. This also doesn't take into account changes to the window that might affect the context, such as viewport changing or fullscreen/windowed mode changing. Any ideas?
author Sam Lantinga <slouken@libsdl.org>
date Mon, 26 May 2008 12:43:37 +0000
parents 6d99edd791bf
children af3dd02cf043
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 #include "SDL_video.h"
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25 #include "SDL_blit.h"
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26
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27
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28 #ifdef __SSE__
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29 /* *INDENT-OFF* */
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30
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31 #ifdef _MSC_VER
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32 #define SSE_BEGIN \
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33 __m128 c128; \
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34 c128.m128_u32[0] = color; \
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35 c128.m128_u32[1] = color; \
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36 c128.m128_u32[2] = color; \
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37 c128.m128_u32[3] = color;
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38 #else
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39 #define SSE_BEGIN \
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40 DECLARE_ALIGNED(Uint32, cccc[4], 16); \
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41 cccc[0] = color; \
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42 cccc[1] = color; \
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43 cccc[2] = color; \
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44 cccc[3] = color; \
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45 __m128 c128 = *(__m128 *)cccc;
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46 #endif
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47
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48 #define SSE_WORK \
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49 for (i = n / 64; i--;) { \
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50 _mm_stream_ps((float *)(p+0), c128); \
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51 _mm_stream_ps((float *)(p+16), c128); \
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52 _mm_stream_ps((float *)(p+32), c128); \
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53 _mm_stream_ps((float *)(p+48), c128); \
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54 p += 64; \
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55 }
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56
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57 #define SSE_END
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58
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59 #define DEFINE_SSE_FILLRECT(bpp, type) \
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60 static void \
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61 SDL_FillRect##bpp##SSE(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \
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62 { \
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63 SSE_BEGIN; \
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64 \
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65 while (h--) { \
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66 int i, n = w * bpp; \
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67 Uint8 *p = pixels; \
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68 \
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69 if (n > 15) { \
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70 int adjust = 16 - ((uintptr_t)p & 15); \
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71 if (adjust < 16) { \
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72 n -= adjust; \
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73 adjust /= bpp; \
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74 while(adjust--) { \
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75 *((type *)p) = (type)color; \
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76 p += bpp; \
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77 } \
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78 } \
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79 SSE_WORK; \
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80 } \
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81 if (n & 63) { \
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82 int remainder = (n & 63); \
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83 remainder /= bpp; \
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84 while(remainder--) { \
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85 *((type *)p) = (type)color; \
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86 p += bpp; \
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87 } \
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88 } \
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89 pixels += pitch; \
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90 } \
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91 \
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92 SSE_END; \
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93 }
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94
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95 DEFINE_SSE_FILLRECT(1, Uint8)
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96 DEFINE_SSE_FILLRECT(2, Uint16)
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97 DEFINE_SSE_FILLRECT(4, Uint32)
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98
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99 /* *INDENT-ON* */
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100 #endif /* __SSE__ */
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101
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102 #ifdef __MMX__
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103 /* *INDENT-OFF* */
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104
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105 #define MMX_BEGIN \
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106 __m64 c64 = _mm_set_pi32(color, color)
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107
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108 #define MMX_WORK \
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109 for (i = n / 64; i--;) { \
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110 _mm_stream_pi((__m64 *)(p+0), c64); \
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111 _mm_stream_pi((__m64 *)(p+8), c64); \
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112 _mm_stream_pi((__m64 *)(p+16), c64); \
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113 _mm_stream_pi((__m64 *)(p+24), c64); \
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114 _mm_stream_pi((__m64 *)(p+32), c64); \
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115 _mm_stream_pi((__m64 *)(p+40), c64); \
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116 _mm_stream_pi((__m64 *)(p+48), c64); \
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117 _mm_stream_pi((__m64 *)(p+56), c64); \
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118 p += 64; \
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119 }
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120
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121 #define MMX_END \
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122 _mm_empty()
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123
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124 #define DEFINE_MMX_FILLRECT(bpp, type) \
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125 static void \
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126 SDL_FillRect##bpp##MMX(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \
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127 { \
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128 MMX_BEGIN; \
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129 \
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130 while (h--) { \
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131 int i, n = w * bpp; \
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132 Uint8 *p = pixels; \
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133 \
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134 if (n > 7) { \
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135 int adjust = 8 - ((uintptr_t)p & 7); \
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136 if (adjust < 8) { \
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137 n -= adjust; \
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138 adjust /= bpp; \
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139 while(adjust--) { \
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140 *((type *)p) = (type)color; \
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141 p += bpp; \
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142 } \
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143 } \
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144 MMX_WORK; \
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145 } \
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146 if (n & 63) { \
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147 int remainder = (n & 63); \
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148 remainder /= bpp; \
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149 while(remainder--) { \
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150 *((type *)p) = (type)color; \
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151 p += bpp; \
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152 } \
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153 } \
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154 pixels += pitch; \
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155 } \
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156 \
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157 MMX_END; \
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158 }
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159
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160 DEFINE_MMX_FILLRECT(1, Uint8)
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161 DEFINE_MMX_FILLRECT(2, Uint16)
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162 DEFINE_MMX_FILLRECT(4, Uint32)
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163
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164 /* *INDENT-ON* */
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165 #endif /* __MMX__ */
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166
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167 static void
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168 SDL_FillRect1(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
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169 {
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170 while (h--) {
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171 int n = w;
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172 Uint8 *p = pixels;
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173
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174 if (n > 3) {
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175 switch ((uintptr_t) p & 3) {
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176 case 1:
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177 *p++ = (Uint8) color;
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178 --n;
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179 case 2:
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180 *p++ = (Uint8) color;
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181 --n;
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182 case 3:
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183 *p++ = (Uint8) color;
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184 --n;
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185 }
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186 SDL_memset4(p, color, (n >> 2));
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187 }
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188 if (n & 3) {
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189 p += (n & ~3);
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190 switch (n & 3) {
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191 case 3:
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192 *p++ = (Uint8) color;
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193 case 2:
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194 *p++ = (Uint8) color;
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195 case 1:
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196 *p++ = (Uint8) color;
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197 }
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198 }
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199 pixels += pitch;
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200 }
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201 }
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202
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203 static void
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204 SDL_FillRect2(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
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205 {
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206 while (h--) {
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207 int n = w;
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208 Uint16 *p = (Uint16 *) pixels;
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209
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210 if (n > 1) {
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211 if ((uintptr_t) p & 2) {
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212 *p++ = (Uint16) color;
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213 --n;
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214 }
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215 SDL_memset4(p, color, (n >> 1));
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216 }
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217 if (n & 1) {
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218 p[n - 1] = (Uint16) color;
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219 }
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220 pixels += pitch;
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221 }
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222 }
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223
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224 static void
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225 SDL_FillRect3(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
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226 {
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227 Uint8 r = (Uint8) ((color >> 16) & 0xFF);
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228 Uint8 g = (Uint8) ((color >> 8) & 0xFF);
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229 Uint8 b = (Uint8) (color & 0xFF);
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230
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231 while (h--) {
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232 int n = w;
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233 Uint8 *p = pixels;
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234
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235 while (n--) {
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236 *p++ = r;
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237 *p++ = g;
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238 *p++ = b;
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239 }
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240 pixels += pitch;
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241 }
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242 }
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243
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244 static void
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245 SDL_FillRect4(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
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246 {
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247 while (h--) {
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248 SDL_memset4(pixels, color, w);
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249 pixels += pitch;
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250 }
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251 }
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252
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253 /*
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254 * This function performs a fast fill of the given rectangle with 'color'
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255 */
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256 int
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257 SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
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258 {
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259 Uint8 *pixels;
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260
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261 /* This function doesn't work on surfaces < 8 bpp */
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262 if (dst->format->BitsPerPixel < 8) {
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263 SDL_SetError("SDL_FillRect(): Unsupported surface format");
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264 return (-1);
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265 }
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266
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267 /* If 'dstrect' == NULL, then fill the whole surface */
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268 if (dstrect) {
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269 /* Perform clipping */
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270 if (!SDL_IntersectRect(dstrect, &dst->clip_rect, dstrect)) {
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271 return (0);
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272 }
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273 } else {
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274 dstrect = &dst->clip_rect;
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275 }
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276
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277 /* Perform software fill */
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278 if (!dst->pixels) {
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279 SDL_SetError("SDL_FillRect(): You must lock the surface");
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280 return (-1);
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281 }
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282
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283 pixels =
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284 (Uint8 *) dst->pixels + dstrect->y * dst->pitch +
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285 dstrect->x * dst->format->BytesPerPixel;
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286
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287 switch (dst->format->BytesPerPixel) {
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288 case 1:
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289 {
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290 color |= (color << 8);
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291 color |= (color << 16);
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292 #ifdef __SSE__
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293 if (SDL_HasSSE()) {
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294 SDL_FillRect1SSE(pixels, dst->pitch, color, dstrect->w,
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295 dstrect->h);
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296 break;
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297 }
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298 #endif
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299 #ifdef __MMX__
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300 if (SDL_HasMMX()) {
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301 SDL_FillRect1MMX(pixels, dst->pitch, color, dstrect->w,
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302 dstrect->h);
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303 break;
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304 }
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305 #endif
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306 SDL_FillRect1(pixels, dst->pitch, color, dstrect->w, dstrect->h);
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307 break;
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308 }
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309
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310 case 2:
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311 {
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312 color |= (color << 16);
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313 #ifdef __SSE__
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314 if (SDL_HasSSE()) {
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315 SDL_FillRect2SSE(pixels, dst->pitch, color, dstrect->w,
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316 dstrect->h);
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317 break;
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318 }
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319 #endif
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320 #ifdef __MMX__
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321 if (SDL_HasMMX()) {
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322 SDL_FillRect2MMX(pixels, dst->pitch, color, dstrect->w,
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323 dstrect->h);
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324 break;
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325 }
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326 #endif
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327 SDL_FillRect2(pixels, dst->pitch, color, dstrect->w, dstrect->h);
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328 break;
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329 }
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330
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331 case 3:
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332 /* 24-bit RGB is a slow path, at least for now. */
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333 {
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334 SDL_FillRect3(pixels, dst->pitch, color, dstrect->w, dstrect->h);
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335 break;
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336 }
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337
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338 case 4:
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339 {
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340 #ifdef __SSE__
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341 if (SDL_HasSSE()) {
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342 SDL_FillRect4SSE(pixels, dst->pitch, color, dstrect->w,
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343 dstrect->h);
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344 break;
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345 }
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346 #endif
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347 #ifdef __MMX__
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348 if (SDL_HasMMX()) {
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349 SDL_FillRect4MMX(pixels, dst->pitch, color, dstrect->w,
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diff changeset
350 dstrect->h);
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351 break;
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352 }
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353 #endif
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diff changeset
354 SDL_FillRect4(pixels, dst->pitch, color, dstrect->w, dstrect->h);
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355 break;
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356 }
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357 }
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358
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359 SDL_UnlockSurface(dst);
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360
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361 /* We're done! */
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362 return (0);
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
363 }
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parents:
diff changeset
364
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Sam Lantinga <slouken@libsdl.org>
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365 /* vi: set ts=4 sw=4 expandtab: */