Mercurial > sdl-ios-xcode
annotate src/video/SDL_RLEaccel.c @ 2318:0c653886cce7
HandleEvent() returns done each time it is called. If done was set to 0 the program should quit, but because done is not checked until *all* events are handled a
following event can reset done to 1 and prevent the program from terminating when told to. I fixed the while loop that handles events to check for the state of done
after handling each event. That could leave some events unhandled when the program exits, but it ensures that the program will exit.
| author | Bob Pendleton <bob@pendleton.com> |
|---|---|
| date | Wed, 20 Feb 2008 23:27:33 +0000 |
| parents | c785543d1843 |
| children | 91e601d9df8b |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 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 |
| 0 | 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. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 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 |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* | |
| 25 * RLE encoding for software colorkey and alpha-channel acceleration | |
| 26 * | |
| 27 * Original version by Sam Lantinga | |
| 28 * | |
| 29 * Mattias Engdegård (Yorick): Rewrite. New encoding format, encoder and | |
| 30 * decoder. Added per-surface alpha blitter. Added per-pixel alpha | |
| 31 * format, encoder and blitter. | |
| 32 * | |
| 33 * Many thanks to Xark and johns for hints, benchmarks and useful comments | |
| 34 * leading to this code. | |
| 35 * | |
| 36 * Welcome to Macro Mayhem. | |
| 37 */ | |
| 38 | |
| 39 /* | |
| 40 * The encoding translates the image data to a stream of segments of the form | |
| 41 * | |
| 42 * <skip> <run> <data> | |
| 43 * | |
| 44 * where <skip> is the number of transparent pixels to skip, | |
| 45 * <run> is the number of opaque pixels to blit, | |
| 46 * and <data> are the pixels themselves. | |
| 47 * | |
| 48 * This basic structure is used both for colorkeyed surfaces, used for simple | |
| 49 * binary transparency and for per-surface alpha blending, and for surfaces | |
| 50 * with per-pixel alpha. The details differ, however: | |
| 51 * | |
| 52 * Encoding of colorkeyed surfaces: | |
| 53 * | |
| 54 * Encoded pixels always have the same format as the target surface. | |
| 55 * <skip> and <run> are unsigned 8 bit integers, except for 32 bit depth | |
| 56 * where they are 16 bit. This makes the pixel data aligned at all times. | |
| 57 * Segments never wrap around from one scan line to the next. | |
| 58 * | |
| 59 * The end of the sequence is marked by a zero <skip>,<run> pair at the * | |
| 60 * beginning of a line. | |
| 61 * | |
| 62 * Encoding of surfaces with per-pixel alpha: | |
| 63 * | |
| 64 * The sequence begins with a struct RLEDestFormat describing the target | |
| 65 * pixel format, to provide reliable un-encoding. | |
| 66 * | |
| 67 * Each scan line is encoded twice: First all completely opaque pixels, | |
| 68 * encoded in the target format as described above, and then all | |
| 69 * partially transparent (translucent) pixels (where 1 <= alpha <= 254), | |
| 70 * in the following 32-bit format: | |
| 71 * | |
| 72 * For 32-bit targets, each pixel has the target RGB format but with | |
| 73 * the alpha value occupying the highest 8 bits. The <skip> and <run> | |
| 74 * counts are 16 bit. | |
| 75 * | |
| 76 * For 16-bit targets, each pixel has the target RGB format, but with | |
| 77 * the middle component (usually green) shifted 16 steps to the left, | |
| 78 * and the hole filled with the 5 most significant bits of the alpha value. | |
| 79 * i.e. if the target has the format rrrrrggggggbbbbb, | |
| 80 * the encoded pixel will be 00000gggggg00000rrrrr0aaaaabbbbb. | |
| 81 * The <skip> and <run> counts are 8 bit for the opaque lines, 16 bit | |
| 82 * for the translucent lines. Two padding bytes may be inserted | |
| 83 * before each translucent line to keep them 32-bit aligned. | |
| 84 * | |
| 85 * The end of the sequence is marked by a zero <skip>,<run> pair at the | |
| 86 * beginning of an opaque line. | |
| 87 */ | |
| 88 | |
| 89 #include "SDL_video.h" | |
| 90 #include "SDL_sysvideo.h" | |
| 91 #include "SDL_blit.h" | |
| 92 #include "SDL_RLEaccel_c.h" | |
| 93 | |
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94 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && SDL_ASSEMBLY_ROUTINES |
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95 #define MMX_ASMBLIT |
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96 #endif |
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97 |
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98 #ifdef MMX_ASMBLIT |
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99 #include "mmx.h" |
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100 #include "SDL_cpuinfo.h" |
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101 #endif |
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102 |
| 0 | 103 #ifndef MAX |
| 104 #define MAX(a, b) ((a) > (b) ? (a) : (b)) | |
| 105 #endif | |
| 106 #ifndef MIN | |
| 107 #define MIN(a, b) ((a) < (b) ? (a) : (b)) | |
| 108 #endif | |
| 109 | |
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110 #define PIXEL_COPY(to, from, len, bpp) \ |
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111 do { \ |
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112 if(bpp == 4) { \ |
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113 SDL_memcpy4(to, from, (size_t)(len)); \ |
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114 } else { \ |
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115 SDL_memcpy(to, from, (size_t)(len) * (bpp)); \ |
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116 } \ |
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117 } while(0) |
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118 |
| 0 | 119 /* |
| 120 * Various colorkey blit methods, for opaque and per-surface alpha | |
| 121 */ | |
| 122 | |
| 123 #define OPAQUE_BLIT(to, from, length, bpp, alpha) \ | |
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124 PIXEL_COPY(to, from, length, bpp) |
| 0 | 125 |
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126 #ifdef MMX_ASMBLIT |
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127 |
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128 #define ALPHA_BLIT32_888MMX(to, from, length, bpp, alpha) \ |
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129 do { \ |
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130 Uint32 *srcp = (Uint32 *)(from); \ |
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131 Uint32 *dstp = (Uint32 *)(to); \ |
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132 int i = 0x00FF00FF; \ |
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133 movd_m2r(*(&i), mm3); \ |
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134 punpckldq_r2r(mm3, mm3); \ |
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135 i = 0xFF000000; \ |
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136 movd_m2r(*(&i), mm7); \ |
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137 punpckldq_r2r(mm7, mm7); \ |
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138 i = alpha | alpha << 16; \ |
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139 movd_m2r(*(&i), mm4); \ |
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140 punpckldq_r2r(mm4, mm4); \ |
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141 pcmpeqd_r2r(mm5,mm5); /* set mm5 to "1" */ \ |
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142 pxor_r2r(mm7, mm5); /* make clear alpha mask */ \ |
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143 i = length; \ |
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144 if(i & 1) { \ |
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145 movd_m2r((*srcp), mm1); /* src -> mm1 */ \ |
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146 punpcklbw_r2r(mm1, mm1); \ |
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147 pand_r2r(mm3, mm1); \ |
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148 movd_m2r((*dstp), mm2); /* dst -> mm2 */ \ |
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149 punpcklbw_r2r(mm2, mm2); \ |
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150 pand_r2r(mm3, mm2); \ |
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151 psubw_r2r(mm2, mm1); \ |
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152 pmullw_r2r(mm4, mm1); \ |
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153 psrlw_i2r(8, mm1); \ |
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154 paddw_r2r(mm1, mm2); \ |
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155 pand_r2r(mm3, mm2); \ |
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156 packuswb_r2r(mm2, mm2); \ |
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157 pand_r2r(mm5, mm2); /* 00000RGB -> mm2 */ \ |
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158 movd_r2m(mm2, *dstp); \ |
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159 ++srcp; \ |
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160 ++dstp; \ |
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161 i--; \ |
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162 } \ |
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163 for(; i > 0; --i) { \ |
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164 movq_m2r((*srcp), mm0); \ |
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165 movq_r2r(mm0, mm1); \ |
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166 punpcklbw_r2r(mm0, mm0); \ |
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167 movq_m2r((*dstp), mm2); \ |
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168 punpckhbw_r2r(mm1, mm1); \ |
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169 movq_r2r(mm2, mm6); \ |
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170 pand_r2r(mm3, mm0); \ |
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171 punpcklbw_r2r(mm2, mm2); \ |
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172 pand_r2r(mm3, mm1); \ |
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173 punpckhbw_r2r(mm6, mm6); \ |
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174 pand_r2r(mm3, mm2); \ |
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175 psubw_r2r(mm2, mm0); \ |
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176 pmullw_r2r(mm4, mm0); \ |
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177 pand_r2r(mm3, mm6); \ |
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178 psubw_r2r(mm6, mm1); \ |
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179 pmullw_r2r(mm4, mm1); \ |
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180 psrlw_i2r(8, mm0); \ |
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181 paddw_r2r(mm0, mm2); \ |
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182 psrlw_i2r(8, mm1); \ |
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183 paddw_r2r(mm1, mm6); \ |
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184 pand_r2r(mm3, mm2); \ |
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185 pand_r2r(mm3, mm6); \ |
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186 packuswb_r2r(mm2, mm2); \ |
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187 packuswb_r2r(mm6, mm6); \ |
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188 psrlq_i2r(32, mm2); \ |
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189 psllq_i2r(32, mm6); \ |
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190 por_r2r(mm6, mm2); \ |
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191 pand_r2r(mm5, mm2); /* 00000RGB -> mm2 */ \ |
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192 movq_r2m(mm2, *dstp); \ |
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193 srcp += 2; \ |
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194 dstp += 2; \ |
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195 i--; \ |
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196 } \ |
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197 emms(); \ |
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198 } while(0) |
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199 |
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200 #define ALPHA_BLIT16_565MMX(to, from, length, bpp, alpha) \ |
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201 do { \ |
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202 int i, n = 0; \ |
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203 Uint16 *srcp = (Uint16 *)(from); \ |
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204 Uint16 *dstp = (Uint16 *)(to); \ |
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205 Uint32 ALPHA = 0xF800; \ |
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206 movd_m2r(*(&ALPHA), mm1); \ |
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207 punpcklwd_r2r(mm1, mm1); \ |
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208 punpcklwd_r2r(mm1, mm1); \ |
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209 ALPHA = 0x07E0; \ |
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210 movd_m2r(*(&ALPHA), mm4); \ |
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211 punpcklwd_r2r(mm4, mm4); \ |
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212 punpcklwd_r2r(mm4, mm4); \ |
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213 ALPHA = 0x001F; \ |
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214 movd_m2r(*(&ALPHA), mm7); \ |
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215 punpcklwd_r2r(mm7, mm7); \ |
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216 punpcklwd_r2r(mm7, mm7); \ |
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217 alpha &= ~(1+2+4); \ |
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218 i = (Uint32)alpha | (Uint32)alpha << 16; \ |
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219 movd_m2r(*(&i), mm0); \ |
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220 punpckldq_r2r(mm0, mm0); \ |
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221 ALPHA = alpha >> 3; \ |
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222 i = ((int)(length) & 3); \ |
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223 for(; i > 0; --i) { \ |
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224 Uint32 s = *srcp++; \ |
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225 Uint32 d = *dstp; \ |
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226 s = (s | s << 16) & 0x07e0f81f; \ |
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227 d = (d | d << 16) & 0x07e0f81f; \ |
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228 d += (s - d) * ALPHA >> 5; \ |
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229 d &= 0x07e0f81f; \ |
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230 *dstp++ = d | d >> 16; \ |
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231 n++; \ |
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232 } \ |
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233 i = (int)(length) - n; \ |
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234 for(; i > 0; --i) { \ |
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235 movq_m2r((*dstp), mm3); \ |
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236 movq_m2r((*srcp), mm2); \ |
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237 movq_r2r(mm2, mm5); \ |
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238 pand_r2r(mm1 , mm5); \ |
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239 psrlq_i2r(11, mm5); \ |
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240 movq_r2r(mm3, mm6); \ |
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241 pand_r2r(mm1 , mm6); \ |
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242 psrlq_i2r(11, mm6); \ |
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243 psubw_r2r(mm6, mm5); \ |
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244 pmullw_r2r(mm0, mm5); \ |
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245 psrlw_i2r(8, mm5); \ |
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246 paddw_r2r(mm5, mm6); \ |
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247 psllq_i2r(11, mm6); \ |
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248 pand_r2r(mm1, mm6); \ |
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249 movq_r2r(mm4, mm5); \ |
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250 por_r2r(mm7, mm5); \ |
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251 pand_r2r(mm5, mm3); \ |
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252 por_r2r(mm6, mm3); \ |
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253 movq_r2r(mm2, mm5); \ |
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254 pand_r2r(mm4 , mm5); \ |
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255 psrlq_i2r(5, mm5); \ |
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256 movq_r2r(mm3, mm6); \ |
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257 pand_r2r(mm4 , mm6); \ |
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258 psrlq_i2r(5, mm6); \ |
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259 psubw_r2r(mm6, mm5); \ |
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260 pmullw_r2r(mm0, mm5); \ |
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261 psrlw_i2r(8, mm5); \ |
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262 paddw_r2r(mm5, mm6); \ |
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263 psllq_i2r(5, mm6); \ |
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264 pand_r2r(mm4, mm6); \ |
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265 movq_r2r(mm1, mm5); \ |
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266 por_r2r(mm7, mm5); \ |
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267 pand_r2r(mm5, mm3); \ |
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268 por_r2r(mm6, mm3); \ |
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269 movq_r2r(mm2, mm5); \ |
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270 pand_r2r(mm7 , mm5); \ |
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271 movq_r2r(mm3, mm6); \ |
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272 pand_r2r(mm7 , mm6); \ |
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273 psubw_r2r(mm6, mm5); \ |
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274 pmullw_r2r(mm0, mm5); \ |
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275 psrlw_i2r(8, mm5); \ |
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276 paddw_r2r(mm5, mm6); \ |
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277 pand_r2r(mm7, mm6); \ |
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278 movq_r2r(mm1, mm5); \ |
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279 por_r2r(mm4, mm5); \ |
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280 pand_r2r(mm5, mm3); \ |
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281 por_r2r(mm6, mm3); \ |
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282 movq_r2m(mm3, *dstp); \ |
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283 srcp += 4; \ |
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284 dstp += 4; \ |
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285 i -= 3; \ |
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286 } \ |
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287 emms(); \ |
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288 } while(0) |
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289 |
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290 #define ALPHA_BLIT16_555MMX(to, from, length, bpp, alpha) \ |
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291 do { \ |
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292 int i, n = 0; \ |
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293 Uint16 *srcp = (Uint16 *)(from); \ |
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294 Uint16 *dstp = (Uint16 *)(to); \ |
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295 Uint32 ALPHA = 0x7C00; \ |
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296 movd_m2r(*(&ALPHA), mm1); \ |
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297 punpcklwd_r2r(mm1, mm1); \ |
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298 punpcklwd_r2r(mm1, mm1); \ |
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299 ALPHA = 0x03E0; \ |
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300 movd_m2r(*(&ALPHA), mm4); \ |
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301 punpcklwd_r2r(mm4, mm4); \ |
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302 punpcklwd_r2r(mm4, mm4); \ |
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303 ALPHA = 0x001F; \ |
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304 movd_m2r(*(&ALPHA), mm7); \ |
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305 punpcklwd_r2r(mm7, mm7); \ |
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306 punpcklwd_r2r(mm7, mm7); \ |
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307 alpha &= ~(1+2+4); \ |
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308 i = (Uint32)alpha | (Uint32)alpha << 16; \ |
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309 movd_m2r(*(&i), mm0); \ |
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310 punpckldq_r2r(mm0, mm0); \ |
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311 i = ((int)(length) & 3); \ |
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312 ALPHA = alpha >> 3; \ |
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313 for(; i > 0; --i) { \ |
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314 Uint32 s = *srcp++; \ |
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315 Uint32 d = *dstp; \ |
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316 s = (s | s << 16) & 0x03e07c1f; \ |
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317 d = (d | d << 16) & 0x03e07c1f; \ |
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318 d += (s - d) * ALPHA >> 5; \ |
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319 d &= 0x03e07c1f; \ |
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320 *dstp++ = d | d >> 16; \ |
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321 n++; \ |
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322 } \ |
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323 i = (int)(length) - n; \ |
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324 for(; i > 0; --i) { \ |
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325 movq_m2r((*dstp), mm3); \ |
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326 movq_m2r((*srcp), mm2); \ |
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327 movq_r2r(mm2, mm5); \ |
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328 pand_r2r(mm1 , mm5); \ |
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329 psrlq_i2r(10, mm5); \ |
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330 movq_r2r(mm3, mm6); \ |
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331 pand_r2r(mm1 , mm6); \ |
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332 psrlq_i2r(10, mm6); \ |
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333 psubw_r2r(mm6, mm5); \ |
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334 pmullw_r2r(mm0, mm5); \ |
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335 psrlw_i2r(8, mm5); \ |
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336 paddw_r2r(mm5, mm6); \ |
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337 psllq_i2r(10, mm6); \ |
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338 pand_r2r(mm1, mm6); \ |
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339 movq_r2r(mm4, mm5); \ |
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340 por_r2r(mm7, mm5); \ |
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341 pand_r2r(mm5, mm3); \ |
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342 por_r2r(mm6, mm3); \ |
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343 movq_r2r(mm2, mm5); \ |
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344 pand_r2r(mm4 , mm5); \ |
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345 psrlq_i2r(5, mm5); \ |
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346 movq_r2r(mm3, mm6); \ |
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347 pand_r2r(mm4 , mm6); \ |
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348 psrlq_i2r(5, mm6); \ |
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349 psubw_r2r(mm6, mm5); \ |
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350 pmullw_r2r(mm0, mm5); \ |
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351 psrlw_i2r(8, mm5); \ |
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352 paddw_r2r(mm5, mm6); \ |
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353 psllq_i2r(5, mm6); \ |
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354 pand_r2r(mm4, mm6); \ |
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355 movq_r2r(mm1, mm5); \ |
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356 por_r2r(mm7, mm5); \ |
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357 pand_r2r(mm5, mm3); \ |
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358 por_r2r(mm6, mm3); \ |
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359 movq_r2r(mm2, mm5); \ |
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360 pand_r2r(mm7 , mm5); \ |
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361 movq_r2r(mm3, mm6); \ |
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362 pand_r2r(mm7 , mm6); \ |
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363 psubw_r2r(mm6, mm5); \ |
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364 pmullw_r2r(mm0, mm5); \ |
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365 psrlw_i2r(8, mm5); \ |
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366 paddw_r2r(mm5, mm6); \ |
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367 pand_r2r(mm7, mm6); \ |
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368 movq_r2r(mm1, mm5); \ |
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369 por_r2r(mm4, mm5); \ |
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370 pand_r2r(mm5, mm3); \ |
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371 por_r2r(mm6, mm3); \ |
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372 movq_r2m(mm3, *dstp); \ |
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373 srcp += 4; \ |
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374 dstp += 4; \ |
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375 i -= 3; \ |
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376 } \ |
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377 emms(); \ |
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378 } while(0) |
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379 |
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380 #endif |
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381 |
| 0 | 382 /* |
| 383 * For 32bpp pixels on the form 0x00rrggbb: | |
| 384 * If we treat the middle component separately, we can process the two | |
| 385 * remaining in parallel. This is safe to do because of the gap to the left | |
| 386 * of each component, so the bits from the multiplication don't collide. | |
| 387 * This can be used for any RGB permutation of course. | |
| 388 */ | |
| 389 #define ALPHA_BLIT32_888(to, from, length, bpp, alpha) \ | |
| 390 do { \ | |
| 391 int i; \ | |
| 392 Uint32 *src = (Uint32 *)(from); \ | |
| 393 Uint32 *dst = (Uint32 *)(to); \ | |
| 394 for(i = 0; i < (int)(length); i++) { \ | |
| 395 Uint32 s = *src++; \ | |
| 396 Uint32 d = *dst; \ | |
| 397 Uint32 s1 = s & 0xff00ff; \ | |
| 398 Uint32 d1 = d & 0xff00ff; \ | |
| 399 d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; \ | |
| 400 s &= 0xff00; \ | |
| 401 d &= 0xff00; \ | |
| 402 d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ | |
| 403 *dst++ = d1 | d; \ | |
| 404 } \ | |
| 405 } while(0) | |
| 406 | |
| 407 /* | |
| 408 * For 16bpp pixels we can go a step further: put the middle component | |
| 409 * in the high 16 bits of a 32 bit word, and process all three RGB | |
| 410 * components at the same time. Since the smallest gap is here just | |
| 411 * 5 bits, we have to scale alpha down to 5 bits as well. | |
| 412 */ | |
| 413 #define ALPHA_BLIT16_565(to, from, length, bpp, alpha) \ | |
| 414 do { \ | |
| 415 int i; \ | |
| 416 Uint16 *src = (Uint16 *)(from); \ | |
| 417 Uint16 *dst = (Uint16 *)(to); \ | |
|
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418 Uint32 ALPHA = alpha >> 3; \ |
| 0 | 419 for(i = 0; i < (int)(length); i++) { \ |
| 420 Uint32 s = *src++; \ | |
| 421 Uint32 d = *dst; \ | |
| 422 s = (s | s << 16) & 0x07e0f81f; \ | |
| 423 d = (d | d << 16) & 0x07e0f81f; \ | |
|
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424 d += (s - d) * ALPHA >> 5; \ |
| 0 | 425 d &= 0x07e0f81f; \ |
|
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426 *dst++ = (Uint16)(d | d >> 16); \ |
| 0 | 427 } \ |
| 428 } while(0) | |
| 429 | |
| 430 #define ALPHA_BLIT16_555(to, from, length, bpp, alpha) \ | |
| 431 do { \ | |
| 432 int i; \ | |
| 433 Uint16 *src = (Uint16 *)(from); \ | |
| 434 Uint16 *dst = (Uint16 *)(to); \ | |
|
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435 Uint32 ALPHA = alpha >> 3; \ |
| 0 | 436 for(i = 0; i < (int)(length); i++) { \ |
| 437 Uint32 s = *src++; \ | |
| 438 Uint32 d = *dst; \ | |
| 439 s = (s | s << 16) & 0x03e07c1f; \ | |
| 440 d = (d | d << 16) & 0x03e07c1f; \ | |
|
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441 d += (s - d) * ALPHA >> 5; \ |
| 0 | 442 d &= 0x03e07c1f; \ |
|
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443 *dst++ = (Uint16)(d | d >> 16); \ |
| 0 | 444 } \ |
| 445 } while(0) | |
| 446 | |
| 447 /* | |
| 448 * The general slow catch-all function, for remaining depths and formats | |
| 449 */ | |
| 450 #define ALPHA_BLIT_ANY(to, from, length, bpp, alpha) \ | |
| 451 do { \ | |
| 452 int i; \ | |
| 453 Uint8 *src = from; \ | |
| 454 Uint8 *dst = to; \ | |
| 455 for(i = 0; i < (int)(length); i++) { \ | |
| 456 Uint32 s, d; \ | |
| 457 unsigned rs, gs, bs, rd, gd, bd; \ | |
| 458 switch(bpp) { \ | |
| 459 case 2: \ | |
| 460 s = *(Uint16 *)src; \ | |
| 461 d = *(Uint16 *)dst; \ | |
| 462 break; \ | |
| 463 case 3: \ | |
| 464 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) { \ | |
| 465 s = (src[0] << 16) | (src[1] << 8) | src[2]; \ | |
| 466 d = (dst[0] << 16) | (dst[1] << 8) | dst[2]; \ | |
| 467 } else { \ | |
| 468 s = (src[2] << 16) | (src[1] << 8) | src[0]; \ | |
| 469 d = (dst[2] << 16) | (dst[1] << 8) | dst[0]; \ | |
| 470 } \ | |
| 471 break; \ | |
| 472 case 4: \ | |
| 473 s = *(Uint32 *)src; \ | |
| 474 d = *(Uint32 *)dst; \ | |
| 475 break; \ | |
| 476 } \ | |
| 477 RGB_FROM_PIXEL(s, fmt, rs, gs, bs); \ | |
| 478 RGB_FROM_PIXEL(d, fmt, rd, gd, bd); \ | |
| 479 rd += (rs - rd) * alpha >> 8; \ | |
| 480 gd += (gs - gd) * alpha >> 8; \ | |
| 481 bd += (bs - bd) * alpha >> 8; \ | |
| 482 PIXEL_FROM_RGB(d, fmt, rd, gd, bd); \ | |
| 483 switch(bpp) { \ | |
| 484 case 2: \ | |
|
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485 *(Uint16 *)dst = (Uint16)d; \ |
| 0 | 486 break; \ |
| 487 case 3: \ | |
| 488 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) { \ | |
|
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489 dst[0] = (Uint8)(d >> 16); \ |
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490 dst[1] = (Uint8)(d >> 8); \ |
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491 dst[2] = (Uint8)(d); \ |
| 0 | 492 } else { \ |
|
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493 dst[0] = (Uint8)d; \ |
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494 dst[1] = (Uint8)(d >> 8); \ |
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495 dst[2] = (Uint8)(d >> 16); \ |
| 0 | 496 } \ |
| 497 break; \ | |
| 498 case 4: \ | |
| 499 *(Uint32 *)dst = d; \ | |
| 500 break; \ | |
| 501 } \ | |
| 502 src += bpp; \ | |
| 503 dst += bpp; \ | |
| 504 } \ | |
| 505 } while(0) | |
| 506 | |
|
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507 #ifdef MMX_ASMBLIT |
| 0 | 508 |
|
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509 #define ALPHA_BLIT32_888_50MMX(to, from, length, bpp, alpha) \ |
|
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510 do { \ |
|
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511 Uint32 *srcp = (Uint32 *)(from); \ |
|
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512 Uint32 *dstp = (Uint32 *)(to); \ |
|
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513 int i = 0x00fefefe; \ |
|
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514 movd_m2r(*(&i), mm4); \ |
|
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515 punpckldq_r2r(mm4, mm4); \ |
|
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516 i = 0x00010101; \ |
|
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517 movd_m2r(*(&i), mm3); \ |
|
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518 punpckldq_r2r(mm3, mm3); \ |
|
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519 i = (int)(length); \ |
|
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520 if( i & 1 ) { \ |
|
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521 Uint32 s = *srcp++; \ |
|
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522 Uint32 d = *dstp; \ |
|
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523 *dstp++ = (((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) \ |
|
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524 + (s & d & 0x00010101); \ |
|
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525 i--; \ |
|
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526 } \ |
|
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527 for(; i > 0; --i) { \ |
|
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528 movq_m2r((*dstp), mm2); /* dst -> mm2 */ \ |
|
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529 movq_r2r(mm2, mm6); /* dst -> mm6 */ \ |
|
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530 movq_m2r((*srcp), mm1); /* src -> mm1 */ \ |
|
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531 movq_r2r(mm1, mm5); /* src -> mm5 */ \ |
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532 pand_r2r(mm4, mm6); /* dst & 0x00fefefe -> mm6 */ \ |
|
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533 pand_r2r(mm4, mm5); /* src & 0x00fefefe -> mm5 */ \ |
|
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534 paddd_r2r(mm6, mm5); /* (dst & 0x00fefefe) + (dst & 0x00fefefe) -> mm5 */ \ |
|
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535 psrld_i2r(1, mm5); \ |
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536 pand_r2r(mm1, mm2); /* s & d -> mm2 */ \ |
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537 pand_r2r(mm3, mm2); /* s & d & 0x00010101 -> mm2 */ \ |
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538 paddd_r2r(mm5, mm2); \ |
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539 movq_r2m(mm2, (*dstp)); \ |
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540 dstp += 2; \ |
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541 srcp += 2; \ |
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542 i--; \ |
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543 } \ |
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544 emms(); \ |
|
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545 } while(0) |
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546 |
|
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547 #endif |
|
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548 |
| 0 | 549 /* |
| 550 * Special case: 50% alpha (alpha=128) | |
| 551 * This is treated specially because it can be optimized very well, and | |
| 552 * since it is good for many cases of semi-translucency. | |
| 553 * The theory is to do all three components at the same time: | |
| 554 * First zero the lowest bit of each component, which gives us room to | |
| 555 * add them. Then shift right and add the sum of the lowest bits. | |
| 556 */ | |
| 557 #define ALPHA_BLIT32_888_50(to, from, length, bpp, alpha) \ | |
| 558 do { \ | |
| 559 int i; \ | |
| 560 Uint32 *src = (Uint32 *)(from); \ | |
| 561 Uint32 *dst = (Uint32 *)(to); \ | |
| 562 for(i = 0; i < (int)(length); i++) { \ | |
| 563 Uint32 s = *src++; \ | |
| 564 Uint32 d = *dst; \ | |
| 565 *dst++ = (((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) \ | |
| 566 + (s & d & 0x00010101); \ | |
| 567 } \ | |
| 568 } while(0) | |
| 569 | |
| 570 /* | |
| 571 * For 16bpp, we can actually blend two pixels in parallel, if we take | |
| 572 * care to shift before we add, not after. | |
| 573 */ | |
| 574 | |
| 575 /* helper: blend a single 16 bit pixel at 50% */ | |
| 576 #define BLEND16_50(dst, src, mask) \ | |
| 577 do { \ | |
|
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578 Uint32 s = *src++; \ |
| 0 | 579 Uint32 d = *dst; \ |
|
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580 *dst++ = (Uint16)((((s & mask) + (d & mask)) >> 1) + \ |
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581 (s & d & (~mask & 0xffff))); \ |
| 0 | 582 } while(0) |
| 583 | |
| 584 /* basic 16bpp blender. mask is the pixels to keep when adding. */ | |
| 585 #define ALPHA_BLIT16_50(to, from, length, bpp, alpha, mask) \ | |
| 586 do { \ | |
| 587 unsigned n = (length); \ | |
| 588 Uint16 *src = (Uint16 *)(from); \ | |
| 589 Uint16 *dst = (Uint16 *)(to); \ | |
|
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|
590 if(((uintptr_t)src ^ (uintptr_t)dst) & 3) { \ |
| 0 | 591 /* source and destination not in phase, blit one by one */ \ |
| 592 while(n--) \ | |
| 593 BLEND16_50(dst, src, mask); \ | |
| 594 } else { \ | |
|
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595 if((uintptr_t)src & 3) { \ |
| 0 | 596 /* first odd pixel */ \ |
| 597 BLEND16_50(dst, src, mask); \ | |
| 598 n--; \ | |
| 599 } \ | |
| 600 for(; n > 1; n -= 2) { \ | |
| 601 Uint32 s = *(Uint32 *)src; \ | |
| 602 Uint32 d = *(Uint32 *)dst; \ | |
| 603 *(Uint32 *)dst = ((s & (mask | mask << 16)) >> 1) \ | |
| 604 + ((d & (mask | mask << 16)) >> 1) \ | |
| 605 + (s & d & (~(mask | mask << 16))); \ | |
| 606 src += 2; \ | |
| 607 dst += 2; \ | |
| 608 } \ | |
| 609 if(n) \ | |
| 610 BLEND16_50(dst, src, mask); /* last odd pixel */ \ | |
| 611 } \ | |
| 612 } while(0) | |
| 613 | |
| 614 #define ALPHA_BLIT16_565_50(to, from, length, bpp, alpha) \ | |
| 615 ALPHA_BLIT16_50(to, from, length, bpp, alpha, 0xf7de) | |
| 616 | |
| 617 #define ALPHA_BLIT16_555_50(to, from, length, bpp, alpha) \ | |
| 618 ALPHA_BLIT16_50(to, from, length, bpp, alpha, 0xfbde) | |
| 619 | |
|
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620 #ifdef MMX_ASMBLIT |
| 0 | 621 |
| 622 #define CHOOSE_BLIT(blitter, alpha, fmt) \ | |
| 623 do { \ | |
| 624 if(alpha == 255) { \ | |
| 625 switch(fmt->BytesPerPixel) { \ | |
| 626 case 1: blitter(1, Uint8, OPAQUE_BLIT); break; \ | |
| 627 case 2: blitter(2, Uint8, OPAQUE_BLIT); break; \ | |
| 628 case 3: blitter(3, Uint8, OPAQUE_BLIT); break; \ | |
| 629 case 4: blitter(4, Uint16, OPAQUE_BLIT); break; \ | |
| 630 } \ | |
| 631 } else { \ | |
| 632 switch(fmt->BytesPerPixel) { \ | |
| 633 case 1: \ | |
| 634 /* No 8bpp alpha blitting */ \ | |
| 635 break; \ | |
| 636 \ | |
| 637 case 2: \ | |
| 638 switch(fmt->Rmask | fmt->Gmask | fmt->Bmask) { \ | |
| 639 case 0xffff: \ | |
| 640 if(fmt->Gmask == 0x07e0 \ | |
| 641 || fmt->Rmask == 0x07e0 \ | |
| 642 || fmt->Bmask == 0x07e0) { \ | |
| 643 if(alpha == 128) \ | |
| 644 blitter(2, Uint8, ALPHA_BLIT16_565_50); \ | |
| 645 else { \ | |
|
739
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Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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646 if(SDL_HasMMX()) \ |
|
689
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647 blitter(2, Uint8, ALPHA_BLIT16_565MMX); \ |
|
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648 else \ |
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649 blitter(2, Uint8, ALPHA_BLIT16_565); \ |
|
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650 } \ |
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651 } else \ |
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652 goto general16; \ |
|
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653 break; \ |
|
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654 \ |
|
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655 case 0x7fff: \ |
|
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656 if(fmt->Gmask == 0x03e0 \ |
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657 || fmt->Rmask == 0x03e0 \ |
|
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658 || fmt->Bmask == 0x03e0) { \ |
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659 if(alpha == 128) \ |
|
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660 blitter(2, Uint8, ALPHA_BLIT16_555_50); \ |
|
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661 else { \ |
|
739
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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parents:
689
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changeset
|
662 if(SDL_HasMMX()) \ |
|
689
5bb080d35049
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663 blitter(2, Uint8, ALPHA_BLIT16_555MMX); \ |
|
5bb080d35049
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|
664 else \ |
|
5bb080d35049
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diff
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|
665 blitter(2, Uint8, ALPHA_BLIT16_555); \ |
|
5bb080d35049
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diff
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|
666 } \ |
|
5bb080d35049
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diff
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|
667 break; \ |
|
5bb080d35049
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diff
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|
668 } \ |
|
5bb080d35049
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|
669 /* fallthrough */ \ |
|
5bb080d35049
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|
670 \ |
|
5bb080d35049
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|
671 default: \ |
|
5bb080d35049
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|
672 general16: \ |
|
5bb080d35049
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|
673 blitter(2, Uint8, ALPHA_BLIT_ANY); \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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|
674 } \ |
|
5bb080d35049
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|
675 break; \ |
|
5bb080d35049
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|
676 \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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|
677 case 3: \ |
|
5bb080d35049
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|
678 blitter(3, Uint8, ALPHA_BLIT_ANY); \ |
|
5bb080d35049
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|
679 break; \ |
|
5bb080d35049
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|
680 \ |
|
5bb080d35049
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|
681 case 4: \ |
|
5bb080d35049
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682 if((fmt->Rmask | fmt->Gmask | fmt->Bmask) == 0x00ffffff \ |
|
5bb080d35049
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683 && (fmt->Gmask == 0xff00 || fmt->Rmask == 0xff00 \ |
|
5bb080d35049
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diff
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|
684 || fmt->Bmask == 0xff00)) { \ |
|
5bb080d35049
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685 if(alpha == 128) \ |
|
5bb080d35049
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|
686 { \ |
|
739
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
689
diff
changeset
|
687 if(SDL_HasMMX()) \ |
|
689
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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688 blitter(4, Uint16, ALPHA_BLIT32_888_50MMX);\ |
|
5bb080d35049
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689 else \ |
|
5bb080d35049
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|
690 blitter(4, Uint16, ALPHA_BLIT32_888_50);\ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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|
691 } \ |
|
5bb080d35049
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|
692 else \ |
|
5bb080d35049
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|
693 { \ |
|
739
22dbf364c017
Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
689
diff
changeset
|
694 if(SDL_HasMMX()) \ |
|
689
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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|
695 blitter(4, Uint16, ALPHA_BLIT32_888MMX);\ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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|
696 else \ |
|
5bb080d35049
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|
697 blitter(4, Uint16, ALPHA_BLIT32_888); \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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|
698 } \ |
|
5bb080d35049
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|
699 } else \ |
|
5bb080d35049
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|
700 blitter(4, Uint16, ALPHA_BLIT_ANY); \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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|
701 break; \ |
|
5bb080d35049
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|
702 } \ |
|
5bb080d35049
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parents:
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diff
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|
703 } \ |
|
5bb080d35049
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|
704 } while(0) |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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changeset
|
705 |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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|
706 #else |
|
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707 |
|
689
5bb080d35049
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|
708 #define CHOOSE_BLIT(blitter, alpha, fmt) \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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|
709 do { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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526
diff
changeset
|
710 if(alpha == 255) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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526
diff
changeset
|
711 switch(fmt->BytesPerPixel) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
526
diff
changeset
|
712 case 1: blitter(1, Uint8, OPAQUE_BLIT); break; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
526
diff
changeset
|
713 case 2: blitter(2, Uint8, OPAQUE_BLIT); break; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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526
diff
changeset
|
714 case 3: blitter(3, Uint8, OPAQUE_BLIT); break; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
526
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changeset
|
715 case 4: blitter(4, Uint16, OPAQUE_BLIT); break; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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526
diff
changeset
|
716 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents:
526
diff
changeset
|
717 } else { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
526
diff
changeset
|
718 switch(fmt->BytesPerPixel) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents:
526
diff
changeset
|
719 case 1: \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
526
diff
changeset
|
720 /* No 8bpp alpha blitting */ \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
526
diff
changeset
|
721 break; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
526
diff
changeset
|
722 \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents:
526
diff
changeset
|
723 case 2: \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
526
diff
changeset
|
724 switch(fmt->Rmask | fmt->Gmask | fmt->Bmask) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents:
526
diff
changeset
|
725 case 0xffff: \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents:
526
diff
changeset
|
726 if(fmt->Gmask == 0x07e0 \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
526
diff
changeset
|
727 || fmt->Rmask == 0x07e0 \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
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526
diff
changeset
|
728 || fmt->Bmask == 0x07e0) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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parents:
526
diff
changeset
|
729 if(alpha == 128) \ |
|
5bb080d35049
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526
diff
changeset
|
730 blitter(2, Uint8, ALPHA_BLIT16_565_50); \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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526
diff
changeset
|
731 else { \ |
| 0 | 732 blitter(2, Uint8, ALPHA_BLIT16_565); \ |
| 733 } \ | |
| 734 } else \ | |
| 735 goto general16; \ | |
| 736 break; \ | |
| 737 \ | |
| 738 case 0x7fff: \ | |
| 739 if(fmt->Gmask == 0x03e0 \ | |
| 740 || fmt->Rmask == 0x03e0 \ | |
| 741 || fmt->Bmask == 0x03e0) { \ | |
| 742 if(alpha == 128) \ | |
| 743 blitter(2, Uint8, ALPHA_BLIT16_555_50); \ | |
| 744 else { \ | |
| 745 blitter(2, Uint8, ALPHA_BLIT16_555); \ | |
| 746 } \ | |
| 747 break; \ | |
| 748 } \ | |
| 749 /* fallthrough */ \ | |
| 750 \ | |
| 751 default: \ | |
| 752 general16: \ | |
| 753 blitter(2, Uint8, ALPHA_BLIT_ANY); \ | |
| 754 } \ | |
| 755 break; \ | |
| 756 \ | |
| 757 case 3: \ | |
| 758 blitter(3, Uint8, ALPHA_BLIT_ANY); \ | |
| 759 break; \ | |
| 760 \ | |
| 761 case 4: \ | |
| 762 if((fmt->Rmask | fmt->Gmask | fmt->Bmask) == 0x00ffffff \ | |
| 763 && (fmt->Gmask == 0xff00 || fmt->Rmask == 0xff00 \ | |
| 764 || fmt->Bmask == 0xff00)) { \ | |
| 765 if(alpha == 128) \ | |
| 766 blitter(4, Uint16, ALPHA_BLIT32_888_50); \ | |
| 767 else \ | |
| 768 blitter(4, Uint16, ALPHA_BLIT32_888); \ | |
| 769 } else \ | |
| 770 blitter(4, Uint16, ALPHA_BLIT_ANY); \ | |
| 771 break; \ | |
| 772 } \ | |
| 773 } \ | |
| 774 } while(0) | |
| 775 | |
|
689
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
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diff
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|
776 #endif |
| 0 | 777 |
| 778 /* | |
| 779 * This takes care of the case when the surface is clipped on the left and/or | |
| 780 * right. Top clipping has already been taken care of. | |
| 781 */ | |
|
1895
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diff
changeset
|
782 static void |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff
changeset
|
783 RLEClipBlit(int w, Uint8 * srcbuf, SDL_Surface * dst, |
|
c121d94672cb
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changeset
|
784 Uint8 * dstbuf, SDL_Rect * srcrect, unsigned alpha) |
| 0 | 785 { |
| 786 SDL_PixelFormat *fmt = dst->format; | |
| 787 | |
| 788 #define RLECLIPBLIT(bpp, Type, do_blit) \ | |
| 789 do { \ | |
| 790 int linecount = srcrect->h; \ | |
| 791 int ofs = 0; \ | |
| 792 int left = srcrect->x; \ | |
| 793 int right = left + srcrect->w; \ | |
| 794 dstbuf -= left * bpp; \ | |
| 795 for(;;) { \ | |
| 796 int run; \ | |
| 797 ofs += *(Type *)srcbuf; \ | |
| 798 run = ((Type *)srcbuf)[1]; \ | |
| 799 srcbuf += 2 * sizeof(Type); \ | |
| 800 if(run) { \ | |
| 801 /* clip to left and right borders */ \ | |
| 802 if(ofs < right) { \ | |
| 803 int start = 0; \ | |
| 804 int len = run; \ | |
| 805 int startcol; \ | |
| 806 if(left - ofs > 0) { \ | |
| 807 start = left - ofs; \ | |
| 808 len -= start; \ | |
| 809 if(len <= 0) \ | |
| 810 goto nocopy ## bpp ## do_blit; \ | |
| 811 } \ | |
| 812 startcol = ofs + start; \ | |
| 813 if(len > right - startcol) \ | |
| 814 len = right - startcol; \ | |
| 815 do_blit(dstbuf + startcol * bpp, srcbuf + start * bpp, \ | |
| 816 len, bpp, alpha); \ | |
| 817 } \ | |
| 818 nocopy ## bpp ## do_blit: \ | |
| 819 srcbuf += run * bpp; \ | |
| 820 ofs += run; \ | |
| 821 } else if(!ofs) \ | |
| 822 break; \ | |
| 823 if(ofs == w) { \ | |
| 824 ofs = 0; \ | |
| 825 dstbuf += dst->pitch; \ | |
| 826 if(!--linecount) \ | |
| 827 break; \ | |
| 828 } \ | |
| 829 } \ | |
| 830 } while(0) | |
| 831 | |
| 832 CHOOSE_BLIT(RLECLIPBLIT, alpha, fmt); | |
| 833 | |
| 834 #undef RLECLIPBLIT | |
| 835 | |
| 836 } | |
| 837 | |
| 838 | |
| 839 /* blit a colorkeyed RLE surface */ | |
|
1895
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changeset
|
840 int |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
841 SDL_RLEBlit(SDL_Surface * src, SDL_Rect * srcrect, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
842 SDL_Surface * dst, SDL_Rect * dstrect) |
| 0 | 843 { |
|
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changeset
|
844 Uint8 *dstbuf; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
845 Uint8 *srcbuf; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
846 int x, y; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff
changeset
|
847 int w = src->w; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
848 unsigned alpha; |
| 0 | 849 |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
850 /* Lock the destination if necessary */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1456
diff
changeset
|
851 if (SDL_MUSTLOCK(dst)) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff
changeset
|
852 if (SDL_LockSurface(dst) < 0) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff
changeset
|
853 return (-1); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff
changeset
|
854 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
855 } |
| 0 | 856 |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
857 /* Set up the source and destination pointers */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
858 x = dstrect->x; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
859 y = dstrect->y; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
860 dstbuf = (Uint8 *) dst->pixels |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
861 + y * dst->pitch + x * src->format->BytesPerPixel; |
|
2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents:
2222
diff
changeset
|
862 srcbuf = (Uint8 *) src->map->data; |
| 0 | 863 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
864 { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
865 /* skip lines at the top if neccessary */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
866 int vskip = srcrect->y; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
867 int ofs = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
868 if (vskip) { |
| 0 | 869 |
| 870 #define RLESKIP(bpp, Type) \ | |
| 871 for(;;) { \ | |
| 872 int run; \ | |
| 873 ofs += *(Type *)srcbuf; \ | |
| 874 run = ((Type *)srcbuf)[1]; \ | |
| 875 srcbuf += sizeof(Type) * 2; \ | |
| 876 if(run) { \ | |
| 877 srcbuf += run * bpp; \ | |
| 878 ofs += run; \ | |
| 879 } else if(!ofs) \ | |
| 880 goto done; \ | |
| 881 if(ofs == w) { \ | |
| 882 ofs = 0; \ | |
| 883 if(!--vskip) \ | |
| 884 break; \ | |
| 885 } \ | |
| 886 } | |
| 887 | |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
888 switch (src->format->BytesPerPixel) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
889 case 1: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
890 RLESKIP(1, Uint8); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
891 break; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
892 case 2: |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
893 RLESKIP(2, Uint8); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
894 break; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
895 case 3: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
896 RLESKIP(3, Uint8); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
897 break; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
898 case 4: |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
899 RLESKIP(4, Uint16); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff
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|
900 break; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
901 } |
| 0 | 902 |
| 903 #undef RLESKIP | |
| 904 | |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
905 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
906 } |
| 0 | 907 |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
908 alpha = src->map->info.a; |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
909 /* if left or right edge clipping needed, call clip blit */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
910 if (srcrect->x || srcrect->w != src->w) { |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
911 RLEClipBlit(w, srcbuf, dst, dstbuf, srcrect, alpha); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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|
912 } else { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
913 SDL_PixelFormat *fmt = src->format; |
| 0 | 914 |
| 915 #define RLEBLIT(bpp, Type, do_blit) \ | |
| 916 do { \ | |
| 917 int linecount = srcrect->h; \ | |
| 918 int ofs = 0; \ | |
| 919 for(;;) { \ | |
| 920 unsigned run; \ | |
| 921 ofs += *(Type *)srcbuf; \ | |
| 922 run = ((Type *)srcbuf)[1]; \ | |
| 923 srcbuf += 2 * sizeof(Type); \ | |
| 924 if(run) { \ | |
| 925 do_blit(dstbuf + ofs * bpp, srcbuf, run, bpp, alpha); \ | |
| 926 srcbuf += run * bpp; \ | |
| 927 ofs += run; \ | |
| 928 } else if(!ofs) \ | |
| 929 break; \ | |
| 930 if(ofs == w) { \ | |
| 931 ofs = 0; \ | |
| 932 dstbuf += dst->pitch; \ | |
| 933 if(!--linecount) \ | |
| 934 break; \ | |
| 935 } \ | |
| 936 } \ | |
| 937 } while(0) | |
| 938 | |
|
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Sam Lantinga <slouken@libsdl.org>
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|
939 CHOOSE_BLIT(RLEBLIT, alpha, fmt); |
| 0 | 940 |
| 941 #undef RLEBLIT | |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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|
942 } |
| 0 | 943 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
944 done: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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|
945 /* Unlock the destination if necessary */ |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
946 if (SDL_MUSTLOCK(dst)) { |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
947 SDL_UnlockSurface(dst); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
948 } |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
949 return (0); |
| 0 | 950 } |
| 951 | |
| 952 #undef OPAQUE_BLIT | |
| 953 | |
| 954 /* | |
| 955 * Per-pixel blitting macros for translucent pixels: | |
| 956 * These use the same techniques as the per-surface blitting macros | |
| 957 */ | |
| 958 | |
| 959 /* | |
| 960 * For 32bpp pixels, we have made sure the alpha is stored in the top | |
| 961 * 8 bits, so proceed as usual | |
| 962 */ | |
| 963 #define BLIT_TRANSL_888(src, dst) \ | |
| 964 do { \ | |
| 965 Uint32 s = src; \ | |
| 966 Uint32 d = dst; \ | |
| 967 unsigned alpha = s >> 24; \ | |
| 968 Uint32 s1 = s & 0xff00ff; \ | |
| 969 Uint32 d1 = d & 0xff00ff; \ | |
| 970 d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; \ | |
| 971 s &= 0xff00; \ | |
| 972 d &= 0xff00; \ | |
| 973 d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ | |
| 974 dst = d1 | d; \ | |
| 975 } while(0) | |
| 976 | |
| 977 /* | |
| 978 * For 16bpp pixels, we have stored the 5 most significant alpha bits in | |
| 979 * bits 5-10. As before, we can process all 3 RGB components at the same time. | |
| 980 */ | |
| 981 #define BLIT_TRANSL_565(src, dst) \ | |
| 982 do { \ | |
|
1428
5f52867ba65c
Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
983 Uint32 s = src; \ |
| 0 | 984 Uint32 d = dst; \ |
| 985 unsigned alpha = (s & 0x3e0) >> 5; \ | |
| 986 s &= 0x07e0f81f; \ | |
| 987 d = (d | d << 16) & 0x07e0f81f; \ | |
| 988 d += (s - d) * alpha >> 5; \ | |
| 989 d &= 0x07e0f81f; \ | |
|
1428
5f52867ba65c
Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
990 dst = (Uint16)(d | d >> 16); \ |
| 0 | 991 } while(0) |
| 992 | |
| 993 #define BLIT_TRANSL_555(src, dst) \ | |
| 994 do { \ | |
|
1428
5f52867ba65c
Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
995 Uint32 s = src; \ |
| 0 | 996 Uint32 d = dst; \ |
| 997 unsigned alpha = (s & 0x3e0) >> 5; \ | |
| 998 s &= 0x03e07c1f; \ | |
| 999 d = (d | d << 16) & 0x03e07c1f; \ | |
| 1000 d += (s - d) * alpha >> 5; \ | |
| 1001 d &= 0x03e07c1f; \ | |
|
1428
5f52867ba65c
Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
1002 dst = (Uint16)(d | d >> 16); \ |
| 0 | 1003 } while(0) |
| 1004 | |
| 1005 /* used to save the destination format in the encoding. Designed to be | |
| 1006 macro-compatible with SDL_PixelFormat but without the unneeded fields */ | |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1007 typedef struct |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1008 { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1009 Uint8 BytesPerPixel; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1010 Uint8 Rloss; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1011 Uint8 Gloss; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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diff
changeset
|
1012 Uint8 Bloss; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1013 Uint8 Rshift; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1014 Uint8 Gshift; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1015 Uint8 Bshift; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1016 Uint8 Ashift; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1017 Uint32 Rmask; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1018 Uint32 Gmask; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1019 Uint32 Bmask; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1020 Uint32 Amask; |
| 0 | 1021 } RLEDestFormat; |
| 1022 | |
| 1023 /* blit a pixel-alpha RLE surface clipped at the right and/or left edges */ | |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1024 static void |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1025 RLEAlphaClipBlit(int w, Uint8 * srcbuf, SDL_Surface * dst, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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diff
changeset
|
1026 Uint8 * dstbuf, SDL_Rect * srcrect) |
| 0 | 1027 { |
| 1028 SDL_PixelFormat *df = dst->format; | |
| 1029 /* | |
| 1030 * clipped blitter: Ptype is the destination pixel type, | |
| 1031 * Ctype the translucent count type, and do_blend the macro | |
| 1032 * to blend one pixel. | |
| 1033 */ | |
| 1034 #define RLEALPHACLIPBLIT(Ptype, Ctype, do_blend) \ | |
| 1035 do { \ | |
| 1036 int linecount = srcrect->h; \ | |
| 1037 int left = srcrect->x; \ | |
| 1038 int right = left + srcrect->w; \ | |
| 1039 dstbuf -= left * sizeof(Ptype); \ | |
| 1040 do { \ | |
| 1041 int ofs = 0; \ | |
| 1042 /* blit opaque pixels on one line */ \ | |
| 1043 do { \ | |
| 1044 unsigned run; \ | |
| 1045 ofs += ((Ctype *)srcbuf)[0]; \ | |
| 1046 run = ((Ctype *)srcbuf)[1]; \ | |
| 1047 srcbuf += 2 * sizeof(Ctype); \ | |
| 1048 if(run) { \ | |
| 1049 /* clip to left and right borders */ \ | |
| 1050 int cofs = ofs; \ | |
| 1051 int crun = run; \ | |
| 1052 if(left - cofs > 0) { \ | |
| 1053 crun -= left - cofs; \ | |
| 1054 cofs = left; \ | |
| 1055 } \ | |
| 1056 if(crun > right - cofs) \ | |
| 1057 crun = right - cofs; \ | |
| 1058 if(crun > 0) \ | |
|
1
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1059 PIXEL_COPY(dstbuf + cofs * sizeof(Ptype), \ |
| 0 | 1060 srcbuf + (cofs - ofs) * sizeof(Ptype), \ |
|
1
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1061 (unsigned)crun, sizeof(Ptype)); \ |
| 0 | 1062 srcbuf += run * sizeof(Ptype); \ |
| 1063 ofs += run; \ | |
| 1064 } else if(!ofs) \ | |
| 1065 return; \ | |
| 1066 } while(ofs < w); \ | |
| 1067 /* skip padding if necessary */ \ | |
| 1068 if(sizeof(Ptype) == 2) \ | |
|
1456
84de7511f79f
Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents:
1428
diff
changeset
|
1069 srcbuf += (uintptr_t)srcbuf & 2; \ |
| 0 | 1070 /* blit translucent pixels on the same line */ \ |
| 1071 ofs = 0; \ | |
| 1072 do { \ | |
| 1073 unsigned run; \ | |
| 1074 ofs += ((Uint16 *)srcbuf)[0]; \ | |
| 1075 run = ((Uint16 *)srcbuf)[1]; \ | |
| 1076 srcbuf += 4; \ | |
| 1077 if(run) { \ | |
| 1078 /* clip to left and right borders */ \ | |
| 1079 int cofs = ofs; \ | |
| 1080 int crun = run; \ | |
| 1081 if(left - cofs > 0) { \ | |
| 1082 crun -= left - cofs; \ | |
| 1083 cofs = left; \ | |
| 1084 } \ | |
| 1085 if(crun > right - cofs) \ | |
| 1086 crun = right - cofs; \ | |
| 1087 if(crun > 0) { \ | |
| 1088 Ptype *dst = (Ptype *)dstbuf + cofs; \ | |
| 1089 Uint32 *src = (Uint32 *)srcbuf + (cofs - ofs); \ | |
| 1090 int i; \ | |
| 1091 for(i = 0; i < crun; i++) \ | |
| 1092 do_blend(src[i], dst[i]); \ | |
| 1093 } \ | |
| 1094 srcbuf += run * 4; \ | |
| 1095 ofs += run; \ | |
| 1096 } \ | |
| 1097 } while(ofs < w); \ | |
| 1098 dstbuf += dst->pitch; \ | |
| 1099 } while(--linecount); \ | |
| 1100 } while(0) | |
| 1101 | |
|
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changeset
|
1102 switch (df->BytesPerPixel) { |
| 0 | 1103 case 2: |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
1104 if (df->Gmask == 0x07e0 || df->Rmask == 0x07e0 || df->Bmask == 0x07e0) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
1105 RLEALPHACLIPBLIT(Uint16, Uint8, BLIT_TRANSL_565); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
1106 else |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1107 RLEALPHACLIPBLIT(Uint16, Uint8, BLIT_TRANSL_555); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1108 break; |
| 0 | 1109 case 4: |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1110 RLEALPHACLIPBLIT(Uint32, Uint16, BLIT_TRANSL_888); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1111 break; |
| 0 | 1112 } |
| 1113 } | |
| 1114 | |
| 1115 /* blit a pixel-alpha RLE surface */ | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1116 int |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1117 SDL_RLEAlphaBlit(SDL_Surface * src, SDL_Rect * srcrect, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1118 SDL_Surface * dst, SDL_Rect * dstrect) |
| 0 | 1119 { |
| 1120 int x, y; | |
| 1121 int w = src->w; | |
| 1122 Uint8 *srcbuf, *dstbuf; | |
| 1123 SDL_PixelFormat *df = dst->format; | |
| 1124 | |
| 1125 /* Lock the destination if necessary */ | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1126 if (SDL_MUSTLOCK(dst)) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1127 if (SDL_LockSurface(dst) < 0) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1128 return -1; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1129 } |
| 0 | 1130 } |
| 1131 | |
| 1132 x = dstrect->x; | |
| 1133 y = dstrect->y; | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1134 dstbuf = (Uint8 *) dst->pixels + y * dst->pitch + x * df->BytesPerPixel; |
|
2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents:
2222
diff
changeset
|
1135 srcbuf = (Uint8 *) src->map->data + sizeof(RLEDestFormat); |
| 0 | 1136 |
| 1137 { | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1138 /* skip lines at the top if necessary */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1139 int vskip = srcrect->y; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1140 if (vskip) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1141 int ofs; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1142 if (df->BytesPerPixel == 2) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1143 /* the 16/32 interleaved format */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1144 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1145 /* skip opaque line */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1146 ofs = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1147 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1148 int run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1149 ofs += srcbuf[0]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1150 run = srcbuf[1]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1151 srcbuf += 2; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1152 if (run) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1153 srcbuf += 2 * run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1154 ofs += run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1155 } else if (!ofs) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1156 goto done; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1157 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1158 while (ofs < w); |
| 0 | 1159 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1160 /* skip padding */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1161 srcbuf += (uintptr_t) srcbuf & 2; |
| 0 | 1162 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1163 /* skip translucent line */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1164 ofs = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1165 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1166 int run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1167 ofs += ((Uint16 *) srcbuf)[0]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1168 run = ((Uint16 *) srcbuf)[1]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1169 srcbuf += 4 * (run + 1); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1170 ofs += run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1171 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1172 while (ofs < w); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1173 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1174 while (--vskip); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1175 } else { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1176 /* the 32/32 interleaved format */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1177 vskip <<= 1; /* opaque and translucent have same format */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1178 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1179 ofs = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1180 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1181 int run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1182 ofs += ((Uint16 *) srcbuf)[0]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1183 run = ((Uint16 *) srcbuf)[1]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1184 srcbuf += 4; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1185 if (run) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1186 srcbuf += 4 * run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1187 ofs += run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1188 } else if (!ofs) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1189 goto done; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1190 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1191 while (ofs < w); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1192 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1193 while (--vskip); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1194 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1195 } |
| 0 | 1196 } |
| 1197 | |
| 1198 /* if left or right edge clipping needed, call clip blit */ | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1199 if (srcrect->x || srcrect->w != src->w) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1200 RLEAlphaClipBlit(w, srcbuf, dst, dstbuf, srcrect); |
| 0 | 1201 } else { |
| 1202 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1203 /* |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1204 * non-clipped blitter. Ptype is the destination pixel type, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1205 * Ctype the translucent count type, and do_blend the |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1206 * macro to blend one pixel. |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1207 */ |
| 0 | 1208 #define RLEALPHABLIT(Ptype, Ctype, do_blend) \ |
| 1209 do { \ | |
| 1210 int linecount = srcrect->h; \ | |
| 1211 do { \ | |
| 1212 int ofs = 0; \ | |
| 1213 /* blit opaque pixels on one line */ \ | |
| 1214 do { \ | |
| 1215 unsigned run; \ | |
| 1216 ofs += ((Ctype *)srcbuf)[0]; \ | |
| 1217 run = ((Ctype *)srcbuf)[1]; \ | |
| 1218 srcbuf += 2 * sizeof(Ctype); \ | |
| 1219 if(run) { \ | |
|
1
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1220 PIXEL_COPY(dstbuf + ofs * sizeof(Ptype), srcbuf, \ |
|
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
1221 run, sizeof(Ptype)); \ |
| 0 | 1222 srcbuf += run * sizeof(Ptype); \ |
| 1223 ofs += run; \ | |
| 1224 } else if(!ofs) \ | |
| 1225 goto done; \ | |
| 1226 } while(ofs < w); \ | |
| 1227 /* skip padding if necessary */ \ | |
| 1228 if(sizeof(Ptype) == 2) \ | |
|
1456
84de7511f79f
Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents:
1428
diff
changeset
|
1229 srcbuf += (uintptr_t)srcbuf & 2; \ |
| 0 | 1230 /* blit translucent pixels on the same line */ \ |
| 1231 ofs = 0; \ | |
| 1232 do { \ | |
| 1233 unsigned run; \ | |
| 1234 ofs += ((Uint16 *)srcbuf)[0]; \ | |
| 1235 run = ((Uint16 *)srcbuf)[1]; \ | |
| 1236 srcbuf += 4; \ | |
| 1237 if(run) { \ | |
| 1238 Ptype *dst = (Ptype *)dstbuf + ofs; \ | |
| 1239 unsigned i; \ | |
| 1240 for(i = 0; i < run; i++) { \ | |
| 1241 Uint32 src = *(Uint32 *)srcbuf; \ | |
| 1242 do_blend(src, *dst); \ | |
| 1243 srcbuf += 4; \ | |
| 1244 dst++; \ | |
| 1245 } \ | |
| 1246 ofs += run; \ | |
| 1247 } \ | |
| 1248 } while(ofs < w); \ | |
| 1249 dstbuf += dst->pitch; \ | |
| 1250 } while(--linecount); \ | |
| 1251 } while(0) | |
| 1252 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1253 switch (df->BytesPerPixel) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1254 case 2: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1255 if (df->Gmask == 0x07e0 || df->Rmask == 0x07e0 |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1256 || df->Bmask == 0x07e0) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1257 RLEALPHABLIT(Uint16, Uint8, BLIT_TRANSL_565); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1258 else |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1259 RLEALPHABLIT(Uint16, Uint8, BLIT_TRANSL_555); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1260 break; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1261 case 4: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1262 RLEALPHABLIT(Uint32, Uint16, BLIT_TRANSL_888); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1263 break; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1264 } |
| 0 | 1265 } |
| 1266 | |
|
1895
c121d94672cb
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|
1267 done: |
| 0 | 1268 /* Unlock the destination if necessary */ |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1269 if (SDL_MUSTLOCK(dst)) { |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1270 SDL_UnlockSurface(dst); |
| 0 | 1271 } |
| 1272 return 0; | |
| 1273 } | |
| 1274 | |
| 1275 /* | |
| 1276 * Auxiliary functions: | |
| 1277 * The encoding functions take 32bpp rgb + a, and | |
| 1278 * return the number of bytes copied to the destination. | |
| 1279 * The decoding functions copy to 32bpp rgb + a, and | |
| 1280 * return the number of bytes copied from the source. | |
| 1281 * These are only used in the encoder and un-RLE code and are therefore not | |
| 1282 * highly optimised. | |
| 1283 */ | |
| 1284 | |
| 1285 /* encode 32bpp rgb + a into 16bpp rgb, losing alpha */ | |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1286 static int |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1287 copy_opaque_16(void *dst, Uint32 * src, int n, |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1288 SDL_PixelFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 1289 { |
| 1290 int i; | |
| 1291 Uint16 *d = dst; | |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1292 for (i = 0; i < n; i++) { |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1293 unsigned r, g, b; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1294 RGB_FROM_PIXEL(*src, sfmt, r, g, b); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1295 PIXEL_FROM_RGB(*d, dfmt, r, g, b); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1296 src++; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1297 d++; |
| 0 | 1298 } |
| 1299 return n * 2; | |
| 1300 } | |
| 1301 | |
| 1302 /* decode opaque pixels from 16bpp to 32bpp rgb + a */ | |
|
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|
1303 static int |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1304 uncopy_opaque_16(Uint32 * dst, void *src, int n, |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1305 RLEDestFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 1306 { |
| 1307 int i; | |
| 1308 Uint16 *s = src; | |
| 1309 unsigned alpha = dfmt->Amask ? 255 : 0; | |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1310 for (i = 0; i < n; i++) { |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1311 unsigned r, g, b; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1312 RGB_FROM_PIXEL(*s, sfmt, r, g, b); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1313 PIXEL_FROM_RGBA(*dst, dfmt, r, g, b, alpha); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1314 s++; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1315 dst++; |
| 0 | 1316 } |
| 1317 return n * 2; | |
| 1318 } | |
| 1319 | |
| 1320 | |
| 1321 | |
| 1322 /* encode 32bpp rgb + a into 32bpp G0RAB format for blitting into 565 */ | |
|
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|
1323 static int |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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|
1324 copy_transl_565(void *dst, Uint32 * src, int n, |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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|
1325 SDL_PixelFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 1326 { |
| 1327 int i; | |
| 1328 Uint32 *d = dst; | |
|
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|
1329 for (i = 0; i < n; i++) { |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1330 unsigned r, g, b, a; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1331 Uint16 pix; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1332 RGBA_FROM_8888(*src, sfmt, r, g, b, a); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1333 PIXEL_FROM_RGB(pix, dfmt, r, g, b); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1334 *d = ((pix & 0x7e0) << 16) | (pix & 0xf81f) | ((a << 2) & 0x7e0); |
|
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|
1335 src++; |
|
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|
1336 d++; |
| 0 | 1337 } |
| 1338 return n * 4; | |
| 1339 } | |
| 1340 | |
| 1341 /* encode 32bpp rgb + a into 32bpp G0RAB format for blitting into 555 */ | |
|
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|
1342 static int |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1343 copy_transl_555(void *dst, Uint32 * src, int n, |
|
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|
1344 SDL_PixelFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 1345 { |
| 1346 int i; | |
| 1347 Uint32 *d = dst; | |
|
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|
1348 for (i = 0; i < n; i++) { |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1349 unsigned r, g, b, a; |
|
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|
1350 Uint16 pix; |
|
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|
1351 RGBA_FROM_8888(*src, sfmt, r, g, b, a); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1352 PIXEL_FROM_RGB(pix, dfmt, r, g, b); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1353 *d = ((pix & 0x3e0) << 16) | (pix & 0xfc1f) | ((a << 2) & 0x3e0); |
|
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|
1354 src++; |
|
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|
1355 d++; |
| 0 | 1356 } |
| 1357 return n * 4; | |
| 1358 } | |
| 1359 | |
| 1360 /* decode translucent pixels from 32bpp GORAB to 32bpp rgb + a */ | |
|
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|
1361 static int |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1362 uncopy_transl_16(Uint32 * dst, void *src, int n, |
|
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|
1363 RLEDestFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 1364 { |
| 1365 int i; | |
| 1366 Uint32 *s = src; | |
|
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|
1367 for (i = 0; i < n; i++) { |
|
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|
1368 unsigned r, g, b, a; |
|
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|
1369 Uint32 pix = *s++; |
|
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|
1370 a = (pix & 0x3e0) >> 2; |
|
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|
1371 pix = (pix & ~0x3e0) | pix >> 16; |
|
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|
1372 RGB_FROM_PIXEL(pix, sfmt, r, g, b); |
|
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|
1373 PIXEL_FROM_RGBA(*dst, dfmt, r, g, b, a); |
|
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|
1374 dst++; |
| 0 | 1375 } |
| 1376 return n * 4; | |
| 1377 } | |
| 1378 | |
| 1379 /* encode 32bpp rgba into 32bpp rgba, keeping alpha (dual purpose) */ | |
|
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|
1380 static int |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1381 copy_32(void *dst, Uint32 * src, int n, |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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|
1382 SDL_PixelFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 1383 { |
| 1384 int i; | |
| 1385 Uint32 *d = dst; | |
|
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|
1386 for (i = 0; i < n; i++) { |
|
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|
1387 unsigned r, g, b, a; |
|
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|
1388 Uint32 pixel; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1389 RGBA_FROM_8888(*src, sfmt, r, g, b, a); |
|
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|
1390 PIXEL_FROM_RGB(pixel, dfmt, r, g, b); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1391 *d++ = pixel | a << 24; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1392 src++; |
| 0 | 1393 } |
| 1394 return n * 4; | |
| 1395 } | |
| 1396 | |
| 1397 /* decode 32bpp rgba into 32bpp rgba, keeping alpha (dual purpose) */ | |
|
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|
1398 static int |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1399 uncopy_32(Uint32 * dst, void *src, int n, |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1400 RLEDestFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 1401 { |
| 1402 int i; | |
| 1403 Uint32 *s = src; | |
|
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|
1404 for (i = 0; i < n; i++) { |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1405 unsigned r, g, b, a; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1406 Uint32 pixel = *s++; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1407 RGB_FROM_PIXEL(pixel, sfmt, r, g, b); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1408 a = pixel >> 24; |
|
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|
1409 PIXEL_FROM_RGBA(*dst, dfmt, r, g, b, a); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1410 dst++; |
| 0 | 1411 } |
| 1412 return n * 4; | |
| 1413 } | |
| 1414 | |
| 1415 #define ISOPAQUE(pixel, fmt) ((((pixel) & fmt->Amask) >> fmt->Ashift) == 255) | |
| 1416 | |
| 1417 #define ISTRANSL(pixel, fmt) \ | |
| 1418 ((unsigned)((((pixel) & fmt->Amask) >> fmt->Ashift) - 1U) < 254U) | |
| 1419 | |
| 1420 /* convert surface to be quickly alpha-blittable onto dest, if possible */ | |
|
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|
1421 static int |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1422 RLEAlphaSurface(SDL_Surface * surface) |
| 0 | 1423 { |
| 1424 SDL_Surface *dest; | |
| 1425 SDL_PixelFormat *df; | |
| 1426 int maxsize = 0; | |
| 1427 int max_opaque_run; | |
| 1428 int max_transl_run = 65535; | |
| 1429 unsigned masksum; | |
| 1430 Uint8 *rlebuf, *dst; | |
|
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|
1431 int (*copy_opaque) (void *, Uint32 *, int, |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1432 SDL_PixelFormat *, SDL_PixelFormat *); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1433 int (*copy_transl) (void *, Uint32 *, int, |
|
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|
1434 SDL_PixelFormat *, SDL_PixelFormat *); |
| 0 | 1435 |
| 1436 dest = surface->map->dst; | |
|
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|
1437 if (!dest) |
|
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|
1438 return -1; |
| 0 | 1439 df = dest->format; |
|
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changeset
|
1440 if (surface->format->BitsPerPixel != 32) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1441 return -1; /* only 32bpp source supported */ |
| 0 | 1442 |
| 1443 /* find out whether the destination is one we support, | |
| 1444 and determine the max size of the encoded result */ | |
| 1445 masksum = df->Rmask | df->Gmask | df->Bmask; | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1446 switch (df->BytesPerPixel) { |
| 0 | 1447 case 2: |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1448 /* 16bpp: only support 565 and 555 formats */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1449 switch (masksum) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1450 case 0xffff: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1451 if (df->Gmask == 0x07e0 |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1452 || df->Rmask == 0x07e0 || df->Bmask == 0x07e0) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1453 copy_opaque = copy_opaque_16; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1454 copy_transl = copy_transl_565; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1455 } else |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1456 return -1; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1457 break; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1458 case 0x7fff: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1459 if (df->Gmask == 0x03e0 |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1460 || df->Rmask == 0x03e0 || df->Bmask == 0x03e0) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1461 copy_opaque = copy_opaque_16; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1462 copy_transl = copy_transl_555; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1463 } else |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1464 return -1; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1465 break; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1466 default: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1467 return -1; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1468 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1469 max_opaque_run = 255; /* runs stored as bytes */ |
| 0 | 1470 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1471 /* worst case is alternating opaque and translucent pixels, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1472 with room for alignment padding between lines */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1473 maxsize = surface->h * (2 + (4 + 2) * (surface->w + 1)) + 2; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1474 break; |
| 0 | 1475 case 4: |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1476 if (masksum != 0x00ffffff) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1477 return -1; /* requires unused high byte */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1478 copy_opaque = copy_32; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1479 copy_transl = copy_32; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1480 max_opaque_run = 255; /* runs stored as short ints */ |
| 0 | 1481 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1482 /* worst case is alternating opaque and translucent pixels */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1483 maxsize = surface->h * 2 * 4 * (surface->w + 1) + 4; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1484 break; |
| 0 | 1485 default: |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1486 return -1; /* anything else unsupported right now */ |
| 0 | 1487 } |
| 1488 | |
| 1489 maxsize += sizeof(RLEDestFormat); | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1490 rlebuf = (Uint8 *) SDL_malloc(maxsize); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1491 if (!rlebuf) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1492 SDL_OutOfMemory(); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1493 return -1; |
| 0 | 1494 } |
| 1495 { | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1496 /* save the destination format so we can undo the encoding later */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1497 RLEDestFormat *r = (RLEDestFormat *) rlebuf; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1498 r->BytesPerPixel = df->BytesPerPixel; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1499 r->Rloss = df->Rloss; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1500 r->Gloss = df->Gloss; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1501 r->Bloss = df->Bloss; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1502 r->Rshift = df->Rshift; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1503 r->Gshift = df->Gshift; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1504 r->Bshift = df->Bshift; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1505 r->Ashift = df->Ashift; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1506 r->Rmask = df->Rmask; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1507 r->Gmask = df->Gmask; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1508 r->Bmask = df->Bmask; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1509 r->Amask = df->Amask; |
| 0 | 1510 } |
| 1511 dst = rlebuf + sizeof(RLEDestFormat); | |
| 1512 | |
| 1513 /* Do the actual encoding */ | |
| 1514 { | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1515 int x, y; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1516 int h = surface->h, w = surface->w; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1517 SDL_PixelFormat *sf = surface->format; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1518 Uint32 *src = (Uint32 *) surface->pixels; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1519 Uint8 *lastline = dst; /* end of last non-blank line */ |
| 0 | 1520 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1521 /* opaque counts are 8 or 16 bits, depending on target depth */ |
| 0 | 1522 #define ADD_OPAQUE_COUNTS(n, m) \ |
| 1523 if(df->BytesPerPixel == 4) { \ | |
| 1524 ((Uint16 *)dst)[0] = n; \ | |
| 1525 ((Uint16 *)dst)[1] = m; \ | |
| 1526 dst += 4; \ | |
| 1527 } else { \ | |
| 1528 dst[0] = n; \ | |
| 1529 dst[1] = m; \ | |
| 1530 dst += 2; \ | |
| 1531 } | |
| 1532 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1533 /* translucent counts are always 16 bit */ |
| 0 | 1534 #define ADD_TRANSL_COUNTS(n, m) \ |
| 1535 (((Uint16 *)dst)[0] = n, ((Uint16 *)dst)[1] = m, dst += 4) | |
| 1536 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1537 for (y = 0; y < h; y++) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1538 int runstart, skipstart; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1539 int blankline = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1540 /* First encode all opaque pixels of a scan line */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1541 x = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1542 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1543 int run, skip, len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1544 skipstart = x; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1545 while (x < w && !ISOPAQUE(src[x], sf)) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1546 x++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1547 runstart = x; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1548 while (x < w && ISOPAQUE(src[x], sf)) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1549 x++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1550 skip = runstart - skipstart; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1551 if (skip == w) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1552 blankline = 1; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1553 run = x - runstart; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1554 while (skip > max_opaque_run) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1555 ADD_OPAQUE_COUNTS(max_opaque_run, 0); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1556 skip -= max_opaque_run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1557 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1558 len = MIN(run, max_opaque_run); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1559 ADD_OPAQUE_COUNTS(skip, len); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1560 dst += copy_opaque(dst, src + runstart, len, sf, df); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1561 runstart += len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1562 run -= len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1563 while (run) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1564 len = MIN(run, max_opaque_run); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1565 ADD_OPAQUE_COUNTS(0, len); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1566 dst += copy_opaque(dst, src + runstart, len, sf, df); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1567 runstart += len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1568 run -= len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1569 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1570 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1571 while (x < w); |
| 0 | 1572 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1573 /* Make sure the next output address is 32-bit aligned */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1574 dst += (uintptr_t) dst & 2; |
| 0 | 1575 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1576 /* Next, encode all translucent pixels of the same scan line */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1577 x = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1578 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1579 int run, skip, len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1580 skipstart = x; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1581 while (x < w && !ISTRANSL(src[x], sf)) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1582 x++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1583 runstart = x; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1584 while (x < w && ISTRANSL(src[x], sf)) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1585 x++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1586 skip = runstart - skipstart; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1587 blankline &= (skip == w); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1588 run = x - runstart; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1589 while (skip > max_transl_run) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1590 ADD_TRANSL_COUNTS(max_transl_run, 0); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1591 skip -= max_transl_run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1592 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1593 len = MIN(run, max_transl_run); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1594 ADD_TRANSL_COUNTS(skip, len); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1595 dst += copy_transl(dst, src + runstart, len, sf, df); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1596 runstart += len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1597 run -= len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1598 while (run) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1599 len = MIN(run, max_transl_run); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1600 ADD_TRANSL_COUNTS(0, len); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1601 dst += copy_transl(dst, src + runstart, len, sf, df); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1602 runstart += len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1603 run -= len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1604 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1605 if (!blankline) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1606 lastline = dst; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1607 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1608 while (x < w); |
| 0 | 1609 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1610 src += surface->pitch >> 2; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1611 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1612 dst = lastline; /* back up past trailing blank lines */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1613 ADD_OPAQUE_COUNTS(0, 0); |
| 0 | 1614 } |
| 1615 | |
| 1616 #undef ADD_OPAQUE_COUNTS | |
| 1617 #undef ADD_TRANSL_COUNTS | |
| 1618 | |
| 1619 /* Now that we have it encoded, release the original pixels */ | |
|
2222
926294b2bb4e
Emphasized the separation between SDL_Surface and SDL_Texture
Sam Lantinga <slouken@libsdl.org>
parents:
1895
diff
changeset
|
1620 if (!(surface->flags & SDL_PREALLOC)) { |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1621 SDL_free(surface->pixels); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1622 surface->pixels = NULL; |
| 0 | 1623 } |
| 1624 | |
| 1625 /* realloc the buffer to release unused memory */ | |
| 1626 { | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1627 Uint8 *p = SDL_realloc(rlebuf, dst - rlebuf); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1628 if (!p) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1629 p = rlebuf; |
|
2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents:
2222
diff
changeset
|
1630 surface->map->data = p; |
| 0 | 1631 } |
| 1632 | |
| 1633 return 0; | |
| 1634 } | |
| 1635 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1636 static Uint32 |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1637 getpix_8(Uint8 * srcbuf) |
| 0 | 1638 { |
| 1639 return *srcbuf; | |
| 1640 } | |
| 1641 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1642 static Uint32 |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1643 getpix_16(Uint8 * srcbuf) |
| 0 | 1644 { |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1645 return *(Uint16 *) srcbuf; |
| 0 | 1646 } |
| 1647 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1648 static Uint32 |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1649 getpix_24(Uint8 * srcbuf) |
| 0 | 1650 { |
|
1155
91569ec25acd
Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents:
944
diff
changeset
|
1651 #if SDL_BYTEORDER == SDL_LIL_ENDIAN |
|
91569ec25acd
Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents:
944
diff
changeset
|
1652 return srcbuf[0] + (srcbuf[1] << 8) + (srcbuf[2] << 16); |
|
91569ec25acd
Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents:
944
diff
changeset
|
1653 #else |
|
91569ec25acd
Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents:
944
diff
changeset
|
1654 return (srcbuf[0] << 16) + (srcbuf[1] << 8) + srcbuf[2]; |
|
91569ec25acd
Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents:
944
diff
changeset
|
1655 #endif |
| 0 | 1656 } |
| 1657 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1658 static Uint32 |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1659 getpix_32(Uint8 * srcbuf) |
| 0 | 1660 { |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1661 return *(Uint32 *) srcbuf; |
| 0 | 1662 } |
| 1663 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1664 typedef Uint32(*getpix_func) (Uint8 *); |
| 0 | 1665 |
| 1666 static getpix_func getpixes[4] = { | |
| 1667 getpix_8, getpix_16, getpix_24, getpix_32 | |
| 1668 }; | |
| 1669 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1670 static int |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1671 RLEColorkeySurface(SDL_Surface * surface) |
| 0 | 1672 { |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1673 Uint8 *rlebuf, *dst; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1674 int maxn; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1675 int y; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1676 Uint8 *srcbuf, *curbuf, *lastline; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1677 int maxsize = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1678 int skip, run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1679 int bpp = surface->format->BytesPerPixel; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1680 getpix_func getpix; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1681 Uint32 ckey, rgbmask; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1682 int w, h; |
| 0 | 1683 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1684 /* calculate the worst case size for the compressed surface */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1685 switch (bpp) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1686 case 1: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1687 /* worst case is alternating opaque and transparent pixels, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1688 starting with an opaque pixel */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1689 maxsize = surface->h * 3 * (surface->w / 2 + 1) + 2; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1690 break; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1691 case 2: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1692 case 3: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1693 /* worst case is solid runs, at most 255 pixels wide */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1694 maxsize = surface->h * (2 * (surface->w / 255 + 1) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1695 + surface->w * bpp) + 2; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1696 break; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1697 case 4: |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1698 /* worst case is solid runs, at most 65535 pixels wide */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1699 maxsize = surface->h * (4 * (surface->w / 65535 + 1) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1700 + surface->w * 4) + 4; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1701 break; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1702 } |
| 0 | 1703 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1704 rlebuf = (Uint8 *) SDL_malloc(maxsize); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1705 if (rlebuf == NULL) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1706 SDL_OutOfMemory(); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1707 return (-1); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1708 } |
| 0 | 1709 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1710 /* Set up the conversion */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1711 srcbuf = (Uint8 *) surface->pixels; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1712 curbuf = srcbuf; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1713 maxn = bpp == 4 ? 65535 : 255; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1714 skip = run = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1715 dst = rlebuf; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1716 rgbmask = ~surface->format->Amask; |
|
2262
bee005ace1bf
Work in progress: merging new texture features into SDL blit system
Sam Lantinga <slouken@libsdl.org>
parents:
2257
diff
changeset
|
1717 ckey = surface->map->info.colorkey & rgbmask; |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1718 lastline = dst; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1719 getpix = getpixes[bpp - 1]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1720 w = surface->w; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1721 h = surface->h; |
| 0 | 1722 |
| 1723 #define ADD_COUNTS(n, m) \ | |
| 1724 if(bpp == 4) { \ | |
| 1725 ((Uint16 *)dst)[0] = n; \ | |
| 1726 ((Uint16 *)dst)[1] = m; \ | |
| 1727 dst += 4; \ | |
| 1728 } else { \ | |
| 1729 dst[0] = n; \ | |
| 1730 dst[1] = m; \ | |
| 1731 dst += 2; \ | |
| 1732 } | |
| 1733 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1734 for (y = 0; y < h; y++) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1735 int x = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1736 int blankline = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1737 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1738 int run, skip, len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1739 int runstart; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1740 int skipstart = x; |
| 0 | 1741 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1742 /* find run of transparent, then opaque pixels */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1743 while (x < w && (getpix(srcbuf + x * bpp) & rgbmask) == ckey) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1744 x++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1745 runstart = x; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1746 while (x < w && (getpix(srcbuf + x * bpp) & rgbmask) != ckey) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1747 x++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1748 skip = runstart - skipstart; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1749 if (skip == w) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1750 blankline = 1; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1751 run = x - runstart; |
| 0 | 1752 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1753 /* encode segment */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1754 while (skip > maxn) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1755 ADD_COUNTS(maxn, 0); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1756 skip -= maxn; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1757 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1758 len = MIN(run, maxn); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1759 ADD_COUNTS(skip, len); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1760 SDL_memcpy(dst, srcbuf + runstart * bpp, len * bpp); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1761 dst += len * bpp; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1762 run -= len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1763 runstart += len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1764 while (run) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1765 len = MIN(run, maxn); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1766 ADD_COUNTS(0, len); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1767 SDL_memcpy(dst, srcbuf + runstart * bpp, len * bpp); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1768 dst += len * bpp; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1769 runstart += len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1770 run -= len; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1771 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1772 if (!blankline) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1773 lastline = dst; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1774 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1775 while (x < w); |
| 0 | 1776 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1777 srcbuf += surface->pitch; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1778 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1779 dst = lastline; /* back up bast trailing blank lines */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1780 ADD_COUNTS(0, 0); |
| 0 | 1781 |
| 1782 #undef ADD_COUNTS | |
| 1783 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1784 /* Now that we have it encoded, release the original pixels */ |
|
2222
926294b2bb4e
Emphasized the separation between SDL_Surface and SDL_Texture
Sam Lantinga <slouken@libsdl.org>
parents:
1895
diff
changeset
|
1785 if (!(surface->flags & SDL_PREALLOC)) { |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1786 SDL_free(surface->pixels); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1787 surface->pixels = NULL; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1788 } |
| 0 | 1789 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1790 /* realloc the buffer to release unused memory */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1791 { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1792 /* If realloc returns NULL, the original block is left intact */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1793 Uint8 *p = SDL_realloc(rlebuf, dst - rlebuf); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1794 if (!p) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1795 p = rlebuf; |
|
2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents:
2222
diff
changeset
|
1796 surface->map->data = p; |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1797 } |
| 0 | 1798 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1799 return (0); |
| 0 | 1800 } |
| 1801 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1802 int |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1803 SDL_RLESurface(SDL_Surface * surface) |
| 0 | 1804 { |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1805 int flags; |
| 0 | 1806 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1807 /* Clear any previous RLE conversion */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1808 if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1809 SDL_UnRLESurface(surface, 1); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1810 } |
| 0 | 1811 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1812 /* We don't support RLE encoding of bitmaps */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1813 if (surface->format->BitsPerPixel < 8) { |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1814 return -1; |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1815 } |
| 0 | 1816 |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1817 /* Make sure the pixels are available */ |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1818 if (!surface->pixels) { |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1819 return -1; |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1820 } |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1821 |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1822 /* If we don't have colorkey or blending, nothing to do... */ |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1823 flags = surface->map->info.flags; |
|
2267
c785543d1843
Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents:
2266
diff
changeset
|
1824 if (!(flags & (SDL_COPY_COLORKEY | SDL_COPY_BLEND))) { |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1825 return -1; |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1826 } |
| 0 | 1827 |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1828 /* Pass on combinations not supported */ |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1829 if ((flags & SDL_COPY_MODULATE_COLOR) || |
|
2267
c785543d1843
Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents:
2266
diff
changeset
|
1830 (flags & (SDL_COPY_ADD | SDL_COPY_MOD)) || |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1831 (flags & SDL_COPY_NEAREST)) { |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1832 return -1; |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1833 } |
| 0 | 1834 |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1835 /* Encode and set up the blit */ |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1836 if (!surface->format->Amask || !(flags & SDL_COPY_BLEND)) { |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1837 if (!surface->map->identity) { |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1838 return -1; |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1839 } |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1840 if (RLEColorkeySurface(surface) < 0) { |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1841 return -1; |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1842 } |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1843 surface->map->blit = SDL_RLEBlit; |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1844 surface->map->info.flags |= SDL_COPY_RLE_COLORKEY; |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1845 } else { |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1846 if (RLEAlphaSurface(surface) < 0) { |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1847 return -1; |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1848 } |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1849 surface->map->blit = SDL_RLEAlphaBlit; |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1850 surface->map->info.flags |= SDL_COPY_RLE_ALPHAKEY; |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1851 } |
| 0 | 1852 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1853 /* The surface is now accelerated */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1854 surface->flags |= SDL_RLEACCEL; |
| 0 | 1855 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1856 return (0); |
| 0 | 1857 } |
| 1858 | |
| 1859 /* | |
| 1860 * Un-RLE a surface with pixel alpha | |
| 1861 * This may not give back exactly the image before RLE-encoding; all | |
| 1862 * completely transparent pixels will be lost, and colour and alpha depth | |
| 1863 * may have been reduced (when encoding for 16bpp targets). | |
| 1864 */ | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1865 static SDL_bool |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1866 UnRLEAlpha(SDL_Surface * surface) |
| 0 | 1867 { |
| 1868 Uint8 *srcbuf; | |
| 1869 Uint32 *dst; | |
| 1870 SDL_PixelFormat *sf = surface->format; | |
|
2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents:
2222
diff
changeset
|
1871 RLEDestFormat *df = surface->map->data; |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1872 int (*uncopy_opaque) (Uint32 *, void *, int, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1873 RLEDestFormat *, SDL_PixelFormat *); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1874 int (*uncopy_transl) (Uint32 *, void *, int, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1875 RLEDestFormat *, SDL_PixelFormat *); |
| 0 | 1876 int w = surface->w; |
| 1877 int bpp = df->BytesPerPixel; | |
| 1878 | |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1879 if (bpp == 2) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1880 uncopy_opaque = uncopy_opaque_16; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1881 uncopy_transl = uncopy_transl_16; |
| 0 | 1882 } else { |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1883 uncopy_opaque = uncopy_transl = uncopy_32; |
| 0 | 1884 } |
| 1885 | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1886 surface->pixels = SDL_malloc(surface->h * surface->pitch); |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1887 if (!surface->pixels) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1888 return (SDL_FALSE); |
|
944
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents:
880
diff
changeset
|
1889 } |
| 0 | 1890 /* fill background with transparent pixels */ |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1891 SDL_memset(surface->pixels, 0, surface->h * surface->pitch); |
| 0 | 1892 |
| 1893 dst = surface->pixels; | |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1894 srcbuf = (Uint8 *) (df + 1); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1895 for (;;) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1896 /* copy opaque pixels */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1897 int ofs = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1898 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1899 unsigned run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1900 if (bpp == 2) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1901 ofs += srcbuf[0]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1902 run = srcbuf[1]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1903 srcbuf += 2; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1904 } else { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1905 ofs += ((Uint16 *) srcbuf)[0]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1906 run = ((Uint16 *) srcbuf)[1]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1907 srcbuf += 4; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1908 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1909 if (run) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1910 srcbuf += uncopy_opaque(dst + ofs, srcbuf, run, df, sf); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1911 ofs += run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1912 } else if (!ofs) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1913 return (SDL_TRUE); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1914 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1915 while (ofs < w); |
| 0 | 1916 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1917 /* skip padding if needed */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1918 if (bpp == 2) |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1919 srcbuf += (uintptr_t) srcbuf & 2; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1920 |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1921 /* copy translucent pixels */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1922 ofs = 0; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1923 do { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1924 unsigned run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1925 ofs += ((Uint16 *) srcbuf)[0]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1926 run = ((Uint16 *) srcbuf)[1]; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1927 srcbuf += 4; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1928 if (run) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1929 srcbuf += uncopy_transl(dst + ofs, srcbuf, run, df, sf); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1930 ofs += run; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1931 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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diff
changeset
|
1932 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff
changeset
|
1933 while (ofs < w); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff
changeset
|
1934 dst += surface->pitch >> 2; |
| 0 | 1935 } |
|
944
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents:
880
diff
changeset
|
1936 /* Make the compiler happy */ |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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diff
changeset
|
1937 return (SDL_TRUE); |
| 0 | 1938 } |
| 1939 | |
|
1895
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1940 void |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1941 SDL_UnRLESurface(SDL_Surface * surface, int recode) |
| 0 | 1942 { |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1943 if (surface->flags & SDL_RLEACCEL) { |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1944 surface->flags &= ~SDL_RLEACCEL; |
| 0 | 1945 |
|
2222
926294b2bb4e
Emphasized the separation between SDL_Surface and SDL_Texture
Sam Lantinga <slouken@libsdl.org>
parents:
1895
diff
changeset
|
1946 if (recode && !(surface->flags & SDL_PREALLOC)) { |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1947 if (surface->map->info.flags & SDL_COPY_RLE_COLORKEY) { |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1948 SDL_Rect full; |
| 0 | 1949 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1950 /* re-create the original surface */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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diff
changeset
|
1951 surface->pixels = SDL_malloc(surface->h * surface->pitch); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1952 if (!surface->pixels) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1953 /* Oh crap... */ |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1954 surface->flags |= SDL_RLEACCEL; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1955 return; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1956 } |
| 0 | 1957 |
|
1895
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1958 /* fill it with the background colour */ |
|
2262
bee005ace1bf
Work in progress: merging new texture features into SDL blit system
Sam Lantinga <slouken@libsdl.org>
parents:
2257
diff
changeset
|
1959 SDL_FillRect(surface, NULL, surface->map->info.colorkey); |
| 0 | 1960 |
|
1895
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1961 /* now render the encoded surface */ |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1962 full.x = full.y = 0; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1963 full.w = surface->w; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
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1964 full.h = surface->h; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1965 SDL_RLEBlit(surface, &full, surface, &full); |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1966 } else { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1967 if (!UnRLEAlpha(surface)) { |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1968 /* Oh crap... */ |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1969 surface->flags |= SDL_RLEACCEL; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1970 return; |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1971 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
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1972 } |
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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1973 } |
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2267
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Okay, still some bugs, but everything builds again...
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1974 surface->map->info.flags &= |
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1975 (SDL_COPY_RLE_COLORKEY | SDL_COPY_RLE_ALPHAKEY); |
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1976 |
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More work in progress integrating SDL_Surface and the new SDL_Texture API
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1977 if (surface->map->data) { |
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2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
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1978 SDL_free(surface->map->data); |
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Moved the colorkey and per-surface alpha into the blit info,
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1979 surface->map->data = NULL; |
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1980 } |
| 0 | 1981 } |
| 1982 } | |
| 1983 | |
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1984 /* vi: set ts=4 sw=4 expandtab: */ |