annotate src/video/SDL_blit_0.c @ 4072:6930cd5ab933 SDL-1.2

Final fix for bug #373 ------- Comment #13 From Christian Walther 2007-07-15 10:04:56 [reply] ------- Created an attachment (id=229) [details] patch to reinstate the SDL cursor after an NSApplicationActivatedEvent Oops, you're right. My testcursor.c has diverged so far from the original that I missed that. In fact, now that I think about it, that issue isn't even addressed by the cursor rectangle patch - it is only concerned with windowed mode (and fixes the problem there as a side effect). The problem in fullscreen is still the same as before. How about the attachment for a fix? (I can confirm that [NSCursor set] doesn't seem to have any effect when called from QZ_DoActivate().)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 15 Jul 2007 17:22:39 +0000
parents d910939febfa
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 #include "SDL_video.h"
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25 #include "SDL_blit.h"
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26
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27 /* Functions to blit from bitmaps to other surfaces */
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28
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29 static void BlitBto1(SDL_BlitInfo *info)
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30 {
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31 int c;
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32 int width, height;
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33 Uint8 *src, *map, *dst;
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34 int srcskip, dstskip;
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35
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36 /* Set up some basic variables */
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37 width = info->d_width;
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38 height = info->d_height;
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39 src = info->s_pixels;
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40 srcskip = info->s_skip;
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41 dst = info->d_pixels;
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42 dstskip = info->d_skip;
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43 map = info->table;
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44 srcskip += width-(width+7)/8;
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45
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46 if ( map ) {
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47 while ( height-- ) {
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48 Uint8 byte = 0, bit;
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49 for ( c=0; c<width; ++c ) {
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50 if ( (c&7) == 0 ) {
0
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51 byte = *src++;
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52 }
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53 bit = (byte&0x80)>>7;
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54 if ( 1 ) {
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55 *dst = map[bit];
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56 }
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57 dst++;
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58 byte <<= 1;
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59 }
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60 src += srcskip;
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61 dst += dstskip;
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62 }
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63 } else {
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64 while ( height-- ) {
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65 Uint8 byte = 0, bit;
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66 for ( c=0; c<width; ++c ) {
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67 if ( (c&7) == 0 ) {
0
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68 byte = *src++;
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69 }
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70 bit = (byte&0x80)>>7;
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71 if ( 1 ) {
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72 *dst = bit;
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73 }
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74 dst++;
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75 byte <<= 1;
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76 }
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77 src += srcskip;
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78 dst += dstskip;
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79 }
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80 }
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81 }
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82 static void BlitBto2(SDL_BlitInfo *info)
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83 {
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84 int c;
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85 int width, height;
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86 Uint8 *src;
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87 Uint16 *map, *dst;
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88 int srcskip, dstskip;
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89
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90 /* Set up some basic variables */
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91 width = info->d_width;
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92 height = info->d_height;
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93 src = info->s_pixels;
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94 srcskip = info->s_skip;
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95 dst = (Uint16 *)info->d_pixels;
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96 dstskip = info->d_skip/2;
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97 map = (Uint16 *)info->table;
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98 srcskip += width-(width+7)/8;
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99
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100 while ( height-- ) {
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101 Uint8 byte = 0, bit;
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102 for ( c=0; c<width; ++c ) {
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103 if ( (c&7) == 0 ) {
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104 byte = *src++;
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105 }
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106 bit = (byte&0x80)>>7;
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107 if ( 1 ) {
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108 *dst = map[bit];
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109 }
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110 byte <<= 1;
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111 dst++;
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112 }
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113 src += srcskip;
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114 dst += dstskip;
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115 }
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116 }
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117 static void BlitBto3(SDL_BlitInfo *info)
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118 {
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119 int c, o;
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120 int width, height;
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121 Uint8 *src, *map, *dst;
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122 int srcskip, dstskip;
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123
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124 /* Set up some basic variables */
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125 width = info->d_width;
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126 height = info->d_height;
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127 src = info->s_pixels;
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128 srcskip = info->s_skip;
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129 dst = info->d_pixels;
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130 dstskip = info->d_skip;
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131 map = info->table;
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132 srcskip += width-(width+7)/8;
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133
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134 while ( height-- ) {
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135 Uint8 byte = 0, bit;
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136 for ( c=0; c<width; ++c ) {
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137 if ( (c&7) == 0 ) {
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138 byte = *src++;
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139 }
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140 bit = (byte&0x80)>>7;
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141 if ( 1 ) {
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142 o = bit * 4;
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143 dst[0] = map[o++];
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144 dst[1] = map[o++];
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145 dst[2] = map[o++];
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146 }
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147 byte <<= 1;
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148 dst += 3;
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149 }
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150 src += srcskip;
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151 dst += dstskip;
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152 }
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153 }
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154 static void BlitBto4(SDL_BlitInfo *info)
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155 {
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156 int width, height;
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157 Uint8 *src;
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158 Uint32 *map, *dst;
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159 int srcskip, dstskip;
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160 int c;
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161
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162 /* Set up some basic variables */
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163 width = info->d_width;
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164 height = info->d_height;
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165 src = info->s_pixels;
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166 srcskip = info->s_skip;
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167 dst = (Uint32 *)info->d_pixels;
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168 dstskip = info->d_skip/4;
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169 map = (Uint32 *)info->table;
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170 srcskip += width-(width+7)/8;
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171
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172 while ( height-- ) {
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173 Uint8 byte = 0, bit;
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174 for ( c=0; c<width; ++c ) {
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175 if ( (c&7) == 0 ) {
0
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176 byte = *src++;
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177 }
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178 bit = (byte&0x80)>>7;
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179 if ( 1 ) {
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180 *dst = map[bit];
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181 }
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182 byte <<= 1;
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183 dst++;
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184 }
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185 src += srcskip;
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186 dst += dstskip;
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187 }
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188 }
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189
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190 static void BlitBto1Key(SDL_BlitInfo *info)
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191 {
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192 int width = info->d_width;
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193 int height = info->d_height;
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194 Uint8 *src = info->s_pixels;
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195 Uint8 *dst = info->d_pixels;
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196 int srcskip = info->s_skip;
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197 int dstskip = info->d_skip;
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198 Uint32 ckey = info->src->colorkey;
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199 Uint8 *palmap = info->table;
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200 int c;
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201
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202 /* Set up some basic variables */
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203 srcskip += width-(width+7)/8;
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204
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205 if ( palmap ) {
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206 while ( height-- ) {
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207 Uint8 byte = 0, bit;
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208 for ( c=0; c<width; ++c ) {
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209 if ( (c&7) == 0 ) {
0
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210 byte = *src++;
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211 }
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212 bit = (byte&0x80)>>7;
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213 if ( bit != ckey ) {
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214 *dst = palmap[bit];
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215 }
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216 dst++;
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217 byte <<= 1;
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218 }
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219 src += srcskip;
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220 dst += dstskip;
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221 }
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222 } else {
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223 while ( height-- ) {
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224 Uint8 byte = 0, bit;
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225 for ( c=0; c<width; ++c ) {
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226 if ( (c&7) == 0 ) {
0
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227 byte = *src++;
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228 }
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229 bit = (byte&0x80)>>7;
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230 if ( bit != ckey ) {
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231 *dst = bit;
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232 }
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233 dst++;
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234 byte <<= 1;
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235 }
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236 src += srcskip;
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237 dst += dstskip;
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238 }
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239 }
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240 }
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241
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242 static void BlitBto2Key(SDL_BlitInfo *info)
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243 {
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244 int width = info->d_width;
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245 int height = info->d_height;
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246 Uint8 *src = info->s_pixels;
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247 Uint16 *dstp = (Uint16 *)info->d_pixels;
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248 int srcskip = info->s_skip;
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249 int dstskip = info->d_skip;
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250 Uint32 ckey = info->src->colorkey;
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251 Uint8 *palmap = info->table;
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252 int c;
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253
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254 /* Set up some basic variables */
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255 srcskip += width-(width+7)/8;
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256 dstskip /= 2;
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257
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258 while ( height-- ) {
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259 Uint8 byte = 0, bit;
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260 for ( c=0; c<width; ++c ) {
91
e85e03f195b4 From: "Markus F.X.J. Oberhumer"
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parents: 0
diff changeset
261 if ( (c&7) == 0 ) {
0
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262 byte = *src++;
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263 }
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264 bit = (byte&0x80)>>7;
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265 if ( bit != ckey ) {
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266 *dstp=((Uint16 *)palmap)[bit];
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267 }
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268 byte <<= 1;
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269 dstp++;
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270 }
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271 src += srcskip;
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272 dstp += dstskip;
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273 }
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274 }
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275
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276 static void BlitBto3Key(SDL_BlitInfo *info)
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diff changeset
277 {
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278 int width = info->d_width;
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279 int height = info->d_height;
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280 Uint8 *src = info->s_pixels;
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281 Uint8 *dst = info->d_pixels;
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282 int srcskip = info->s_skip;
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283 int dstskip = info->d_skip;
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284 Uint32 ckey = info->src->colorkey;
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285 Uint8 *palmap = info->table;
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286 int c;
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diff changeset
287
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288 /* Set up some basic variables */
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289 srcskip += width-(width+7)/8;
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290
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291 while ( height-- ) {
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292 Uint8 byte = 0, bit;
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293 for ( c=0; c<width; ++c ) {
91
e85e03f195b4 From: "Markus F.X.J. Oberhumer"
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parents: 0
diff changeset
294 if ( (c&7) == 0 ) {
0
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295 byte = *src++;
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diff changeset
296 }
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297 bit = (byte&0x80)>>7;
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298 if ( bit != ckey ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
299 SDL_memcpy(dst, &palmap[bit*4], 3);
0
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diff changeset
300 }
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diff changeset
301 byte <<= 1;
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diff changeset
302 dst += 3;
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parents:
diff changeset
303 }
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diff changeset
304 src += srcskip;
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diff changeset
305 dst += dstskip;
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diff changeset
306 }
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diff changeset
307 }
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diff changeset
308
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diff changeset
309 static void BlitBto4Key(SDL_BlitInfo *info)
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diff changeset
310 {
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diff changeset
311 int width = info->d_width;
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diff changeset
312 int height = info->d_height;
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diff changeset
313 Uint8 *src = info->s_pixels;
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diff changeset
314 Uint32 *dstp = (Uint32 *)info->d_pixels;
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diff changeset
315 int srcskip = info->s_skip;
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diff changeset
316 int dstskip = info->d_skip;
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diff changeset
317 Uint32 ckey = info->src->colorkey;
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diff changeset
318 Uint8 *palmap = info->table;
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diff changeset
319 int c;
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diff changeset
320
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diff changeset
321 /* Set up some basic variables */
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parents:
diff changeset
322 srcskip += width-(width+7)/8;
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diff changeset
323 dstskip /= 4;
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parents:
diff changeset
324
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diff changeset
325 while ( height-- ) {
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diff changeset
326 Uint8 byte = 0, bit;
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parents:
diff changeset
327 for ( c=0; c<width; ++c ) {
91
e85e03f195b4 From: "Markus F.X.J. Oberhumer"
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parents: 0
diff changeset
328 if ( (c&7) == 0 ) {
0
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parents:
diff changeset
329 byte = *src++;
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parents:
diff changeset
330 }
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diff changeset
331 bit = (byte&0x80)>>7;
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parents:
diff changeset
332 if ( bit != ckey ) {
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parents:
diff changeset
333 *dstp=((Uint32 *)palmap)[bit];
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parents:
diff changeset
334 }
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parents:
diff changeset
335 byte <<= 1;
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336 dstp++;
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337 }
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338 src += srcskip;
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339 dstp += dstskip;
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340 }
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341 }
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diff changeset
342
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343 static void BlitBtoNAlpha(SDL_BlitInfo *info)
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344 {
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345 int width = info->d_width;
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346 int height = info->d_height;
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347 Uint8 *src = info->s_pixels;
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348 Uint8 *dst = info->d_pixels;
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349 int srcskip = info->s_skip;
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350 int dstskip = info->d_skip;
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351 const SDL_Color *srcpal = info->src->palette->colors;
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352 SDL_PixelFormat *dstfmt = info->dst;
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353 int dstbpp;
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parents:
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354 int c;
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355 const int A = info->src->alpha;
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356
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357 /* Set up some basic variables */
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358 dstbpp = dstfmt->BytesPerPixel;
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359 srcskip += width-(width+7)/8;
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parents:
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360
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diff changeset
361 while ( height-- ) {
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362 Uint8 byte = 0, bit;
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363 for ( c=0; c<width; ++c ) {
91
e85e03f195b4 From: "Markus F.X.J. Oberhumer"
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
364 if ( (c&7) == 0 ) {
0
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diff changeset
365 byte = *src++;
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366 }
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367 bit = (byte&0x80)>>7;
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diff changeset
368 if ( 1 ) {
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369 Uint32 pixel;
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parents:
diff changeset
370 unsigned sR, sG, sB;
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parents:
diff changeset
371 unsigned dR, dG, dB;
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parents:
diff changeset
372 sR = srcpal[bit].r;
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parents:
diff changeset
373 sG = srcpal[bit].g;
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parents:
diff changeset
374 sB = srcpal[bit].b;
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parents:
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375 DISEMBLE_RGB(dst, dstbpp, dstfmt,
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376 pixel, dR, dG, dB);
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377 ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB);
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parents:
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378 ASSEMBLE_RGB(dst, dstbpp, dstfmt, dR, dG, dB);
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diff changeset
379 }
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diff changeset
380 byte <<= 1;
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diff changeset
381 dst += dstbpp;
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diff changeset
382 }
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parents:
diff changeset
383 src += srcskip;
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parents:
diff changeset
384 dst += dstskip;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 }
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parents:
diff changeset
387
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diff changeset
388 static void BlitBtoNAlphaKey(SDL_BlitInfo *info)
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parents:
diff changeset
389 {
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parents:
diff changeset
390 int width = info->d_width;
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parents:
diff changeset
391 int height = info->d_height;
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parents:
diff changeset
392 Uint8 *src = info->s_pixels;
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parents:
diff changeset
393 Uint8 *dst = info->d_pixels;
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parents:
diff changeset
394 int srcskip = info->s_skip;
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parents:
diff changeset
395 int dstskip = info->d_skip;
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parents:
diff changeset
396 SDL_PixelFormat *srcfmt = info->src;
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parents:
diff changeset
397 SDL_PixelFormat *dstfmt = info->dst;
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parents:
diff changeset
398 const SDL_Color *srcpal = srcfmt->palette->colors;
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parents:
diff changeset
399 int dstbpp;
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parents:
diff changeset
400 int c;
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parents:
diff changeset
401 const int A = srcfmt->alpha;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 Uint32 ckey = srcfmt->colorkey;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 /* Set up some basic variables */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 dstbpp = dstfmt->BytesPerPixel;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 srcskip += width-(width+7)/8;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 while ( height-- ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 Uint8 byte = 0, bit;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 for ( c=0; c<width; ++c ) {
91
e85e03f195b4 From: "Markus F.X.J. Oberhumer"
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
411 if ( (c&7) == 0 ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 byte = *src++;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 bit = (byte&0x80)>>7;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 if ( bit != ckey ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 int sR, sG, sB;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 int dR, dG, dB;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 Uint32 pixel;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 sR = srcpal[bit].r;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 sG = srcpal[bit].g;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 sB = srcpal[bit].b;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 DISEMBLE_RGB(dst, dstbpp, dstfmt,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 pixel, dR, dG, dB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 ASSEMBLE_RGB(dst, dstbpp, dstfmt, dR, dG, dB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 byte <<= 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 dst += dstbpp;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 src += srcskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 dst += dstskip;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 static SDL_loblit bitmap_blit[] = {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 NULL, BlitBto1, BlitBto2, BlitBto3, BlitBto4
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 static SDL_loblit colorkey_blit[] = {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 NULL, BlitBto1Key, BlitBto2Key, BlitBto3Key, BlitBto4Key
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 };
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 SDL_loblit SDL_CalculateBlit0(SDL_Surface *surface, int blit_index)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 int which;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446
1058
e6c91fd1911e Eh, more correct.
Sam Lantinga <slouken@libsdl.org>
parents: 1057
diff changeset
447 if ( surface->format->BitsPerPixel != 1 ) {
1057
e9d23bb80140 Date: Mon, 02 May 2005 04:23:16 -0500
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
448 /* We don't support sub 8-bit packed pixel modes */
e9d23bb80140 Date: Mon, 02 May 2005 04:23:16 -0500
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
449 return NULL;
e9d23bb80140 Date: Mon, 02 May 2005 04:23:16 -0500
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
450 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 if ( surface->map->dst->format->BitsPerPixel < 8 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 which = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 which = surface->map->dst->format->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 switch(blit_index) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 case 0: /* copy */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 return bitmap_blit[which];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 case 1: /* colorkey */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 return colorkey_blit[which];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 case 2: /* alpha */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 return which >= 2 ? BlitBtoNAlpha : NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 case 4: /* alpha + colorkey */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 return which >= 2 ? BlitBtoNAlphaKey : NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 return NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471