annotate src/video/SDL_pixels.c @ 1027:c69697a85412

Clarified the code in the pixel format allocation Added support for direct color 8-bpp modes.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 12 Jan 2005 19:38:24 +0000
parents 3bf4103b2b89
children e9d23bb80140
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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e8157fcb3114 Updated the source with the correct e-mail address
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* General (mostly internal) pixel/color manipulation routines for SDL */
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29
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30 #include <stdio.h>
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31 #include <stdlib.h>
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32 #include <string.h>
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33
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34 #include "SDL_error.h"
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35 #include "SDL_endian.h"
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36 #include "SDL_video.h"
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37 #include "SDL_sysvideo.h"
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38 #include "SDL_blit.h"
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39 #include "SDL_pixels_c.h"
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40 #include "SDL_RLEaccel_c.h"
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41
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42 /* Helper functions */
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43 /*
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44 * Allocate a pixel format structure and fill it according to the given info.
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45 */
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46 SDL_PixelFormat *SDL_AllocFormat(int bpp,
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47 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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48 {
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49 SDL_PixelFormat *format;
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50 Uint32 mask;
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51
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52 /* Allocate an empty pixel format structure */
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53 format = malloc(sizeof(*format));
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54 if ( format == NULL ) {
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55 SDL_OutOfMemory();
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56 return(NULL);
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57 }
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58 memset(format, 0, sizeof(*format));
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59 format->alpha = SDL_ALPHA_OPAQUE;
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60
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61 /* Set up the format */
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62 format->BitsPerPixel = bpp;
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63 format->BytesPerPixel = (bpp+7)/8;
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64 if ( Rmask || Bmask || Gmask ) { /* Packed pixels with custom mask */
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65 format->palette = NULL;
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66 format->Rshift = 0;
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67 format->Rloss = 8;
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68 if ( Rmask ) {
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69 for ( mask = Rmask; !(mask&0x01); mask >>= 1 )
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70 ++format->Rshift;
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71 for ( ; (mask&0x01); mask >>= 1 )
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72 --format->Rloss;
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73 }
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74 format->Gshift = 0;
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75 format->Gloss = 8;
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76 if ( Gmask ) {
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77 for ( mask = Gmask; !(mask&0x01); mask >>= 1 )
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78 ++format->Gshift;
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79 for ( ; (mask&0x01); mask >>= 1 )
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80 --format->Gloss;
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81 }
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82 format->Bshift = 0;
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83 format->Bloss = 8;
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84 if ( Bmask ) {
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85 for ( mask = Bmask; !(mask&0x01); mask >>= 1 )
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86 ++format->Bshift;
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87 for ( ; (mask&0x01); mask >>= 1 )
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88 --format->Bloss;
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89 }
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90 format->Ashift = 0;
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91 format->Aloss = 8;
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92 if ( Amask ) {
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93 for ( mask = Amask; !(mask&0x01); mask >>= 1 )
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94 ++format->Ashift;
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95 for ( ; (mask&0x01); mask >>= 1 )
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96 --format->Aloss;
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97 }
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98 format->Rmask = Rmask;
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99 format->Gmask = Gmask;
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100 format->Bmask = Bmask;
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101 format->Amask = Amask;
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102 } else if ( bpp > 8 ) { /* Packed pixels with standard mask */
0
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103 /* R-G-B */
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104 if ( bpp > 24 )
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105 bpp = 24;
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106 format->Rloss = 8-(bpp/3);
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107 format->Gloss = 8-(bpp/3)-(bpp%3);
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108 format->Bloss = 8-(bpp/3);
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109 format->Rshift = ((bpp/3)+(bpp%3))+(bpp/3);
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110 format->Gshift = (bpp/3);
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111 format->Bshift = 0;
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112 format->Rmask = ((0xFF>>format->Rloss)<<format->Rshift);
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113 format->Gmask = ((0xFF>>format->Gloss)<<format->Gshift);
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114 format->Bmask = ((0xFF>>format->Bloss)<<format->Bshift);
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115 } else { /* Palettized mode */
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116 int i, ncolors = 1;
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117 for ( i = 0; i < bpp; ++i ) {
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118 ncolors *= 2;
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119 }
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120 format->palette = (SDL_Palette *)malloc(sizeof(SDL_Palette));
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121 if ( format->palette == NULL ) {
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122 SDL_FreeFormat(format);
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123 SDL_OutOfMemory();
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124 return(NULL);
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125 }
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126 (format->palette)->ncolors = ncolors;
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127 (format->palette)->colors = (SDL_Color *)malloc(
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128 (format->palette)->ncolors*sizeof(SDL_Color));
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129 if ( (format->palette)->colors == NULL ) {
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130 SDL_FreeFormat(format);
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131 SDL_OutOfMemory();
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132 return(NULL);
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133 }
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134 if ( ncolors == 2 ) {
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135 /* Create a black and white bitmap palette */
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136 format->palette->colors[0].r = 0xFF;
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137 format->palette->colors[0].g = 0xFF;
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138 format->palette->colors[0].b = 0xFF;
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139 format->palette->colors[1].r = 0x00;
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140 format->palette->colors[1].g = 0x00;
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141 format->palette->colors[1].b = 0x00;
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142 } else {
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143 /* Create an empty palette */
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144 memset((format->palette)->colors, 0,
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145 (format->palette)->ncolors*sizeof(SDL_Color));
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146 }
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147
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148 /* Palettized formats have no mask info */
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149 format->Rloss = 8;
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150 format->Gloss = 8;
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151 format->Bloss = 8;
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152 format->Aloss = 8;
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153 format->Rshift = 0;
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154 format->Gshift = 0;
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parents: 997
diff changeset
155 format->Bshift = 0;
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diff changeset
156 format->Ashift = 0;
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diff changeset
157 format->Rmask = 0;
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diff changeset
158 format->Gmask = 0;
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diff changeset
159 format->Bmask = 0;
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diff changeset
160 format->Amask = 0;
0
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161 }
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162 return(format);
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163 }
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164 SDL_PixelFormat *SDL_ReallocFormat(SDL_Surface *surface, int bpp,
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165 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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parents:
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166 {
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167 if ( surface->format ) {
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168 SDL_FreeFormat(surface->format);
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169 SDL_FormatChanged(surface);
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170 }
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171 surface->format = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
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172 return surface->format;
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173 }
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174
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175 /*
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parents:
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176 * Change any previous mappings from/to the new surface format
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177 */
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178 void SDL_FormatChanged(SDL_Surface *surface)
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179 {
845
333db1d87876 Fixed a bug in detecting surface mapping changes
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diff changeset
180 static int format_version = 0;
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181 ++format_version;
333db1d87876 Fixed a bug in detecting surface mapping changes
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diff changeset
182 if ( format_version < 0 ) { /* It wrapped... */
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diff changeset
183 format_version = 1;
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diff changeset
184 }
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185 surface->format_version = format_version;
0
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186 SDL_InvalidateMap(surface->map);
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187 }
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188 /*
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189 * Free a previously allocated format structure
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190 */
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191 void SDL_FreeFormat(SDL_PixelFormat *format)
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192 {
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193 if ( format ) {
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194 if ( format->palette ) {
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195 if ( format->palette->colors ) {
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196 free(format->palette->colors);
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197 }
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198 free(format->palette);
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199 }
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200 free(format);
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201 }
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202 }
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diff changeset
203 /*
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204 * Calculate an 8-bit (3 red, 3 green, 2 blue) dithered palette of colors
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diff changeset
205 */
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diff changeset
206 void SDL_DitherColors(SDL_Color *colors, int bpp)
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diff changeset
207 {
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208 int i;
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parents:
diff changeset
209 if(bpp != 8)
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diff changeset
210 return; /* only 8bpp supported right now */
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parents:
diff changeset
211
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diff changeset
212 for(i = 0; i < 256; i++) {
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diff changeset
213 int r, g, b;
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parents:
diff changeset
214 /* map each bit field to the full [0, 255] interval,
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diff changeset
215 so 0 is mapped to (0, 0, 0) and 255 to (255, 255, 255) */
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diff changeset
216 r = i & 0xe0;
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diff changeset
217 r |= r >> 3 | r >> 6;
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diff changeset
218 colors[i].r = r;
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parents:
diff changeset
219 g = (i << 3) & 0xe0;
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diff changeset
220 g |= g >> 3 | g >> 6;
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parents:
diff changeset
221 colors[i].g = g;
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parents:
diff changeset
222 b = i & 0x3;
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parents:
diff changeset
223 b |= b << 2;
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parents:
diff changeset
224 b |= b << 4;
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parents:
diff changeset
225 colors[i].b = b;
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parents:
diff changeset
226 }
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parents:
diff changeset
227 }
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parents:
diff changeset
228 /*
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parents:
diff changeset
229 * Calculate the pad-aligned scanline width of a surface
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parents:
diff changeset
230 */
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parents:
diff changeset
231 Uint16 SDL_CalculatePitch(SDL_Surface *surface)
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parents:
diff changeset
232 {
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parents:
diff changeset
233 Uint16 pitch;
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parents:
diff changeset
234
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parents:
diff changeset
235 /* Surface should be 4-byte aligned for speed */
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parents:
diff changeset
236 pitch = surface->w*surface->format->BytesPerPixel;
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parents:
diff changeset
237 switch (surface->format->BitsPerPixel) {
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parents:
diff changeset
238 case 1:
74212992fb08 Initial revision
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parents:
diff changeset
239 pitch = (pitch+7)/8;
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parents:
diff changeset
240 break;
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parents:
diff changeset
241 case 4:
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parents:
diff changeset
242 pitch = (pitch+1)/2;
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parents:
diff changeset
243 break;
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parents:
diff changeset
244 default:
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parents:
diff changeset
245 break;
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parents:
diff changeset
246 }
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parents:
diff changeset
247 pitch = (pitch + 3) & ~3; /* 4-byte aligning */
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parents:
diff changeset
248 return(pitch);
74212992fb08 Initial revision
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parents:
diff changeset
249 }
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parents:
diff changeset
250 /*
74212992fb08 Initial revision
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parents:
diff changeset
251 * Match an RGB value to a particular palette index
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parents:
diff changeset
252 */
74212992fb08 Initial revision
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parents:
diff changeset
253 Uint8 SDL_FindColor(SDL_Palette *pal, Uint8 r, Uint8 g, Uint8 b)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
254 {
74212992fb08 Initial revision
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parents:
diff changeset
255 /* Do colorspace distance matching */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
256 unsigned int smallest;
74212992fb08 Initial revision
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parents:
diff changeset
257 unsigned int distance;
74212992fb08 Initial revision
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parents:
diff changeset
258 int rd, gd, bd;
74212992fb08 Initial revision
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parents:
diff changeset
259 int i;
74212992fb08 Initial revision
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parents:
diff changeset
260 Uint8 pixel=0;
74212992fb08 Initial revision
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parents:
diff changeset
261
74212992fb08 Initial revision
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parents:
diff changeset
262 smallest = ~0;
74212992fb08 Initial revision
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parents:
diff changeset
263 for ( i=0; i<pal->ncolors; ++i ) {
74212992fb08 Initial revision
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parents:
diff changeset
264 rd = pal->colors[i].r - r;
74212992fb08 Initial revision
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parents:
diff changeset
265 gd = pal->colors[i].g - g;
74212992fb08 Initial revision
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parents:
diff changeset
266 bd = pal->colors[i].b - b;
74212992fb08 Initial revision
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parents:
diff changeset
267 distance = (rd*rd)+(gd*gd)+(bd*bd);
74212992fb08 Initial revision
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parents:
diff changeset
268 if ( distance < smallest ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
269 pixel = i;
74212992fb08 Initial revision
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parents:
diff changeset
270 if ( distance == 0 ) { /* Perfect match! */
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parents:
diff changeset
271 break;
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parents:
diff changeset
272 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
273 smallest = distance;
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parents:
diff changeset
274 }
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parents:
diff changeset
275 }
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parents:
diff changeset
276 return(pixel);
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parents:
diff changeset
277 }
74212992fb08 Initial revision
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parents:
diff changeset
278
74212992fb08 Initial revision
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parents:
diff changeset
279 /* Find the opaque pixel value corresponding to an RGB triple */
74212992fb08 Initial revision
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parents:
diff changeset
280 Uint32 SDL_MapRGB(SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b)
74212992fb08 Initial revision
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parents:
diff changeset
281 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 if ( format->palette == NULL ) {
74212992fb08 Initial revision
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parents:
diff changeset
283 return (r >> format->Rloss) << format->Rshift
74212992fb08 Initial revision
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parents:
diff changeset
284 | (g >> format->Gloss) << format->Gshift
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parents:
diff changeset
285 | (b >> format->Bloss) << format->Bshift
74212992fb08 Initial revision
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parents:
diff changeset
286 | format->Amask;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 } else {
74212992fb08 Initial revision
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parents:
diff changeset
288 return SDL_FindColor(format->palette, r, g, b);
74212992fb08 Initial revision
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parents:
diff changeset
289 }
74212992fb08 Initial revision
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parents:
diff changeset
290 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291
74212992fb08 Initial revision
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parents:
diff changeset
292 /* Find the pixel value corresponding to an RGBA quadruple */
74212992fb08 Initial revision
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parents:
diff changeset
293 Uint32 SDL_MapRGBA(SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
74212992fb08 Initial revision
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parents:
diff changeset
294 {
74212992fb08 Initial revision
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parents:
diff changeset
295 if ( format->palette == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 return (r >> format->Rloss) << format->Rshift
74212992fb08 Initial revision
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parents:
diff changeset
297 | (g >> format->Gloss) << format->Gshift
74212992fb08 Initial revision
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parents:
diff changeset
298 | (b >> format->Bloss) << format->Bshift
74212992fb08 Initial revision
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parents:
diff changeset
299 | ((a >> format->Aloss) << format->Ashift & format->Amask);
74212992fb08 Initial revision
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parents:
diff changeset
300 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 return SDL_FindColor(format->palette, r, g, b);
74212992fb08 Initial revision
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parents:
diff changeset
302 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 }
74212992fb08 Initial revision
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parents:
diff changeset
304
74212992fb08 Initial revision
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parents:
diff changeset
305 void SDL_GetRGBA(Uint32 pixel, SDL_PixelFormat *fmt,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 {
74212992fb08 Initial revision
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parents:
diff changeset
308 if ( fmt->palette == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 /*
74212992fb08 Initial revision
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parents:
diff changeset
310 * This makes sure that the result is mapped to the
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 * interval [0..255], and the maximum value for each
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 * component is 255. This is important to make sure
74212992fb08 Initial revision
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parents:
diff changeset
313 * that white is indeed reported as (255, 255, 255),
74212992fb08 Initial revision
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parents:
diff changeset
314 * and that opaque alpha is 255.
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parents:
diff changeset
315 * This only works for RGB bit fields at least 4 bit
74212992fb08 Initial revision
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parents:
diff changeset
316 * wide, which is almost always the case.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 */
628
e561e8752d33 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
318 unsigned v;
e561e8752d33 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
319 v = (pixel & fmt->Rmask) >> fmt->Rshift;
688
c0522010bb6d Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST)
Sam Lantinga <slouken@libsdl.org>
parents: 628
diff changeset
320 *r = (v << fmt->Rloss) + (v >> (8 - (fmt->Rloss << 1)));
628
e561e8752d33 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
321 v = (pixel & fmt->Gmask) >> fmt->Gshift;
688
c0522010bb6d Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST)
Sam Lantinga <slouken@libsdl.org>
parents: 628
diff changeset
322 *g = (v << fmt->Gloss) + (v >> (8 - (fmt->Gloss << 1)));
628
e561e8752d33 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
323 v = (pixel & fmt->Bmask) >> fmt->Bshift;
688
c0522010bb6d Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST)
Sam Lantinga <slouken@libsdl.org>
parents: 628
diff changeset
324 *b = (v << fmt->Bloss) + (v >> (8 - (fmt->Bloss << 1)));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 if(fmt->Amask) {
628
e561e8752d33 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
326 v = (pixel & fmt->Amask) >> fmt->Ashift;
688
c0522010bb6d Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST)
Sam Lantinga <slouken@libsdl.org>
parents: 628
diff changeset
327 *a = (v << fmt->Aloss) + (v >> (8 - (fmt->Aloss << 1)));
695
8f579a0e17e6 Whitespace
Sam Lantinga <slouken@libsdl.org>
parents: 688
diff changeset
328 } else {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 *a = SDL_ALPHA_OPAQUE;
695
8f579a0e17e6 Whitespace
Sam Lantinga <slouken@libsdl.org>
parents: 688
diff changeset
330 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 *r = fmt->palette->colors[pixel].r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 *g = fmt->palette->colors[pixel].g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 *b = fmt->palette->colors[pixel].b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 *a = SDL_ALPHA_OPAQUE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 void SDL_GetRGB(Uint32 pixel, SDL_PixelFormat *fmt, Uint8 *r,Uint8 *g,Uint8 *b)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 if ( fmt->palette == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 /* the note for SDL_GetRGBA above applies here too */
628
e561e8752d33 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
343 unsigned v;
e561e8752d33 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
344 v = (pixel & fmt->Rmask) >> fmt->Rshift;
688
c0522010bb6d Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST)
Sam Lantinga <slouken@libsdl.org>
parents: 628
diff changeset
345 *r = (v << fmt->Rloss) + (v >> (8 - (fmt->Rloss << 1)));
628
e561e8752d33 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
346 v = (pixel & fmt->Gmask) >> fmt->Gshift;
688
c0522010bb6d Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST)
Sam Lantinga <slouken@libsdl.org>
parents: 628
diff changeset
347 *g = (v << fmt->Gloss) + (v >> (8 - (fmt->Gloss << 1)));
628
e561e8752d33 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
348 v = (pixel & fmt->Bmask) >> fmt->Bshift;
688
c0522010bb6d Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST)
Sam Lantinga <slouken@libsdl.org>
parents: 628
diff changeset
349 *b = (v << fmt->Bloss) + (v >> (8 - (fmt->Bloss << 1)));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 *r = fmt->palette->colors[pixel].r;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 *g = fmt->palette->colors[pixel].g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 *b = fmt->palette->colors[pixel].b;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 /* Apply gamma to a set of colors - this is easy. :) */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358 void SDL_ApplyGamma(Uint16 *gamma, SDL_Color *colors, SDL_Color *output,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 int ncolors)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 for ( i=0; i<ncolors; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 output[i].r = gamma[0*256 + colors[i].r] >> 8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 output[i].g = gamma[1*256 + colors[i].g] >> 8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 output[i].b = gamma[2*256 + colors[i].b] >> 8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 /* Map from Palette to Palette */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 static Uint8 *Map1to1(SDL_Palette *src, SDL_Palette *dst, int *identical)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373 Uint8 *map;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 if ( identical ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 if ( src->ncolors <= dst->ncolors ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 /* If an identical palette, no need to map */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 if ( memcmp(src->colors, dst->colors, src->ncolors*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 sizeof(SDL_Color)) == 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 *identical = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 *identical = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 map = (Uint8 *)malloc(src->ncolors);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 if ( map == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 for ( i=0; i<src->ncolors; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 map[i] = SDL_FindColor(dst,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 src->colors[i].r, src->colors[i].g, src->colors[i].b);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 return(map);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 /* Map from Palette to BitField */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 static Uint8 *Map1toN(SDL_Palette *src, SDL_PixelFormat *dst)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 Uint8 *map;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 int bpp;
50
eda2f15ffb70 Oops, back it out...
Sam Lantinga <slouken@lokigames.com>
parents: 48
diff changeset
404 unsigned alpha;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 bpp = ((dst->BytesPerPixel == 3) ? 4 : dst->BytesPerPixel);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 map = (Uint8 *)malloc(src->ncolors*bpp);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 if ( map == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412
50
eda2f15ffb70 Oops, back it out...
Sam Lantinga <slouken@lokigames.com>
parents: 48
diff changeset
413 alpha = dst->Amask ? SDL_ALPHA_OPAQUE : 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 /* We memory copy to the pixel map so the endianness is preserved */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 for ( i=0; i<src->ncolors; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 ASSEMBLE_RGBA(&map[i*bpp], dst->BytesPerPixel, dst,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 src->colors[i].r, src->colors[i].g,
50
eda2f15ffb70 Oops, back it out...
Sam Lantinga <slouken@lokigames.com>
parents: 48
diff changeset
418 src->colors[i].b, alpha);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 return(map);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 /* Map from BitField to Dithered-Palette to Palette */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 static Uint8 *MapNto1(SDL_PixelFormat *src, SDL_Palette *dst, int *identical)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 /* Generate a 256 color dither palette */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 SDL_Palette dithered;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 SDL_Color colors[256];
997
3bf4103b2b89 Date: Sat, 27 Nov 2004 13:35:43 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 845
diff changeset
428
3bf4103b2b89 Date: Sat, 27 Nov 2004 13:35:43 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 845
diff changeset
429 /* SDL_DitherColors does not initialize the 'unused' component of colors,
3bf4103b2b89 Date: Sat, 27 Nov 2004 13:35:43 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 845
diff changeset
430 but Map1to1 compares it against dst, so we should initialize it. */
3bf4103b2b89 Date: Sat, 27 Nov 2004 13:35:43 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 845
diff changeset
431 memset(colors, 0, sizeof(colors));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 dithered.ncolors = 256;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 SDL_DitherColors(colors, 8);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 dithered.colors = colors;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 return(Map1to1(&dithered, dst, identical));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 SDL_BlitMap *SDL_AllocBlitMap(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 SDL_BlitMap *map;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 /* Allocate the empty map */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 map = (SDL_BlitMap *)malloc(sizeof(*map));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 if ( map == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 memset(map, 0, sizeof(*map));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 /* Allocate the software blit data */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 map->sw_data = (struct private_swaccel *)malloc(sizeof(*map->sw_data));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 if ( map->sw_data == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 SDL_FreeBlitMap(map);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 SDL_OutOfMemory();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 memset(map->sw_data, 0, sizeof(*map->sw_data));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 /* It's ready to go */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 return(map);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 void SDL_InvalidateMap(SDL_BlitMap *map)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 if ( ! map ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 map->dst = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 map->format_version = (unsigned int)-1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 if ( map->table ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 free(map->table);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 map->table = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 int SDL_MapSurface (SDL_Surface *src, SDL_Surface *dst)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 SDL_PixelFormat *srcfmt;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 SDL_PixelFormat *dstfmt;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 SDL_BlitMap *map;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 /* Clear out any previous mapping */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 map = src->map;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 if ( (src->flags & SDL_RLEACCEL) == SDL_RLEACCEL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 SDL_UnRLESurface(src, 1);
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Sam Lantinga <slouken@lokigames.com>
parents:
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485 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 SDL_InvalidateMap(map);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 /* Figure out what kind of mapping we're doing */
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parents:
diff changeset
489 map->identity = 0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 srcfmt = src->format;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 dstfmt = dst->format;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 switch (srcfmt->BytesPerPixel) {
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parents:
diff changeset
493 case 1:
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parents:
diff changeset
494 switch (dstfmt->BytesPerPixel) {
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parents:
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495 case 1:
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parents:
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496 /* Palette --> Palette */
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parents:
diff changeset
497 /* If both SDL_HWSURFACE, assume have same palette */
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parents:
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498 if ( ((src->flags & SDL_HWSURFACE) == SDL_HWSURFACE) &&
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parents:
diff changeset
499 ((dst->flags & SDL_HWSURFACE) == SDL_HWSURFACE) ) {
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500 map->identity = 1;
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parents:
diff changeset
501 } else {
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diff changeset
502 map->table = Map1to1(srcfmt->palette,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 dstfmt->palette, &map->identity);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 if ( ! map->identity ) {
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parents:
diff changeset
506 if ( map->table == NULL ) {
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parents:
diff changeset
507 return(-1);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 if (srcfmt->BitsPerPixel!=dstfmt->BitsPerPixel)
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parents:
diff changeset
511 map->identity = 0;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 default:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 /* Palette --> BitField */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 map->table = Map1toN(srcfmt->palette, dstfmt);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 if ( map->table == NULL ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 return(-1);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 default:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 switch (dstfmt->BytesPerPixel) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 case 1:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 /* BitField --> Palette */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 map->table = MapNto1(srcfmt,
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 dstfmt->palette, &map->identity);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 if ( ! map->identity ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 if ( map->table == NULL ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 return(-1);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 map->identity = 0; /* Don't optimize to copy */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 default:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 /* BitField --> BitField */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 if ( FORMAT_EQUAL(srcfmt, dstfmt) )
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 map->identity = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 map->dst = dst;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 map->format_version = dst->format_version;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 /* Choose your blitters wisely */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 return(SDL_CalculateBlit(src));
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 void SDL_FreeBlitMap(SDL_BlitMap *map)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 if ( map ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 SDL_InvalidateMap(map);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 if ( map->sw_data != NULL ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 free(map->sw_data);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 free(map);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 }