Mercurial > sdl-ios-xcode
annotate src/video/SDL_RLEaccel.c @ 3168:6338b7f2d024
Hi,
I have prepared a set of patches to readd WindowsCE support to SDL 1.3.
I've created a new GAPI/Rawframebuffer and a DirectDraw renderer.
Both renderers are work in progress and there are several unimplemented
cases. (Notably
RenderLine/RenderPoint/RenderFill/QueryTexturePixels/UpdateTexture and
texture blending )
Nevertheless I am successfully using these renderers together with the
SDL software renderer. (On most devices the SDL software renderer will
be much faster as there are only badly optimized vendor drivers available)
I send these patches now in this unpolished state because there seems to
be some interest in win ce and someone has to start supporting SDL 1.3
Now on to the patches:
wince_events_window_fixes.patch
fixes some wince incompatibilities and adds fullscreen support via
SHFullScreen. NOTE: This patch shouldn't have any side effects on
Windows, but I have NOT tested it on Windows, so please double-check.
This patch doesn't dependent on the following ones.
wince_renderers_system.patch
This patch does all necessary modifications to the SDL system.
- it adds the renderers to the configure system
- it adds the renderers to win32video
SDL_ceddrawrender.c
SDL_ceddrawrender.h
SDL_gapirender_c.h
SDL_gapirender.c
SDL_gapirender.h
these files add the new render drivers and should be placed in
src/video/win32
Some notes to people who want to test this:
- I have only compiled sdl with ming32ce, so the VisualC files are not
up to date
- As mingw32ce has no ddraw.h this file must be taken from the MS SDK
and modified to work with gcc
- I had to modify line 2611 in configure.in to
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lcoredll -lcommctrl -lmmtimer
-Wl,--image-base -Wl,0x10000"
otherwise GetCPinfo wouldn't link. If someone knows whats causing this
I'd be happy to hear about it.
It would be great if these patches could make their way into SVN as this
would make collaboration much much easier.
I'm out of office for the next week and therefore will be unavailable
via email.
Regards
Stefan
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 07 Jun 2009 02:44:46 +0000 |
| parents | dc1eb82ffdaa |
| children | f7b03b6838cb |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 2859 | 3 Copyright (C) 1997-2009 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 | |
| 94 #ifndef MAX | |
| 95 #define MAX(a, b) ((a) > (b) ? (a) : (b)) | |
| 96 #endif | |
| 97 #ifndef MIN | |
| 98 #define MIN(a, b) ((a) < (b) ? (a) : (b)) | |
| 99 #endif | |
| 100 | |
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101 #define PIXEL_COPY(to, from, len, bpp) \ |
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102 do { \ |
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103 if(bpp == 4) { \ |
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104 SDL_memcpy4(to, from, (size_t)(len)); \ |
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105 } else { \ |
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106 SDL_memcpy(to, from, (size_t)(len) * (bpp)); \ |
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107 } \ |
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108 } while(0) |
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109 |
| 0 | 110 /* |
| 111 * Various colorkey blit methods, for opaque and per-surface alpha | |
| 112 */ | |
| 113 | |
| 114 #define OPAQUE_BLIT(to, from, length, bpp, alpha) \ | |
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115 PIXEL_COPY(to, from, length, bpp) |
| 0 | 116 |
| 117 /* | |
| 118 * For 32bpp pixels on the form 0x00rrggbb: | |
| 119 * If we treat the middle component separately, we can process the two | |
| 120 * remaining in parallel. This is safe to do because of the gap to the left | |
| 121 * of each component, so the bits from the multiplication don't collide. | |
| 122 * This can be used for any RGB permutation of course. | |
| 123 */ | |
| 124 #define ALPHA_BLIT32_888(to, from, length, bpp, alpha) \ | |
| 125 do { \ | |
| 126 int i; \ | |
| 127 Uint32 *src = (Uint32 *)(from); \ | |
| 128 Uint32 *dst = (Uint32 *)(to); \ | |
| 129 for(i = 0; i < (int)(length); i++) { \ | |
| 130 Uint32 s = *src++; \ | |
| 131 Uint32 d = *dst; \ | |
| 132 Uint32 s1 = s & 0xff00ff; \ | |
| 133 Uint32 d1 = d & 0xff00ff; \ | |
| 134 d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; \ | |
| 135 s &= 0xff00; \ | |
| 136 d &= 0xff00; \ | |
| 137 d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ | |
| 138 *dst++ = d1 | d; \ | |
| 139 } \ | |
| 140 } while(0) | |
| 141 | |
| 142 /* | |
| 143 * For 16bpp pixels we can go a step further: put the middle component | |
| 144 * in the high 16 bits of a 32 bit word, and process all three RGB | |
| 145 * components at the same time. Since the smallest gap is here just | |
| 146 * 5 bits, we have to scale alpha down to 5 bits as well. | |
| 147 */ | |
| 148 #define ALPHA_BLIT16_565(to, from, length, bpp, alpha) \ | |
| 149 do { \ | |
| 150 int i; \ | |
| 151 Uint16 *src = (Uint16 *)(from); \ | |
| 152 Uint16 *dst = (Uint16 *)(to); \ | |
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153 Uint32 ALPHA = alpha >> 3; \ |
| 0 | 154 for(i = 0; i < (int)(length); i++) { \ |
| 155 Uint32 s = *src++; \ | |
| 156 Uint32 d = *dst; \ | |
| 157 s = (s | s << 16) & 0x07e0f81f; \ | |
| 158 d = (d | d << 16) & 0x07e0f81f; \ | |
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159 d += (s - d) * ALPHA >> 5; \ |
| 0 | 160 d &= 0x07e0f81f; \ |
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161 *dst++ = (Uint16)(d | d >> 16); \ |
| 0 | 162 } \ |
| 163 } while(0) | |
| 164 | |
| 165 #define ALPHA_BLIT16_555(to, from, length, bpp, alpha) \ | |
| 166 do { \ | |
| 167 int i; \ | |
| 168 Uint16 *src = (Uint16 *)(from); \ | |
| 169 Uint16 *dst = (Uint16 *)(to); \ | |
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170 Uint32 ALPHA = alpha >> 3; \ |
| 0 | 171 for(i = 0; i < (int)(length); i++) { \ |
| 172 Uint32 s = *src++; \ | |
| 173 Uint32 d = *dst; \ | |
| 174 s = (s | s << 16) & 0x03e07c1f; \ | |
| 175 d = (d | d << 16) & 0x03e07c1f; \ | |
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176 d += (s - d) * ALPHA >> 5; \ |
| 0 | 177 d &= 0x03e07c1f; \ |
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178 *dst++ = (Uint16)(d | d >> 16); \ |
| 0 | 179 } \ |
| 180 } while(0) | |
| 181 | |
| 182 /* | |
| 183 * The general slow catch-all function, for remaining depths and formats | |
| 184 */ | |
| 185 #define ALPHA_BLIT_ANY(to, from, length, bpp, alpha) \ | |
| 186 do { \ | |
| 187 int i; \ | |
| 188 Uint8 *src = from; \ | |
| 189 Uint8 *dst = to; \ | |
| 190 for(i = 0; i < (int)(length); i++) { \ | |
| 191 Uint32 s, d; \ | |
| 192 unsigned rs, gs, bs, rd, gd, bd; \ | |
| 193 switch(bpp) { \ | |
| 194 case 2: \ | |
| 195 s = *(Uint16 *)src; \ | |
| 196 d = *(Uint16 *)dst; \ | |
| 197 break; \ | |
| 198 case 3: \ | |
| 199 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) { \ | |
| 200 s = (src[0] << 16) | (src[1] << 8) | src[2]; \ | |
| 201 d = (dst[0] << 16) | (dst[1] << 8) | dst[2]; \ | |
| 202 } else { \ | |
| 203 s = (src[2] << 16) | (src[1] << 8) | src[0]; \ | |
| 204 d = (dst[2] << 16) | (dst[1] << 8) | dst[0]; \ | |
| 205 } \ | |
| 206 break; \ | |
| 207 case 4: \ | |
| 208 s = *(Uint32 *)src; \ | |
| 209 d = *(Uint32 *)dst; \ | |
| 210 break; \ | |
| 211 } \ | |
| 212 RGB_FROM_PIXEL(s, fmt, rs, gs, bs); \ | |
| 213 RGB_FROM_PIXEL(d, fmt, rd, gd, bd); \ | |
| 214 rd += (rs - rd) * alpha >> 8; \ | |
| 215 gd += (gs - gd) * alpha >> 8; \ | |
| 216 bd += (bs - bd) * alpha >> 8; \ | |
| 217 PIXEL_FROM_RGB(d, fmt, rd, gd, bd); \ | |
| 218 switch(bpp) { \ | |
| 219 case 2: \ | |
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220 *(Uint16 *)dst = (Uint16)d; \ |
| 0 | 221 break; \ |
| 222 case 3: \ | |
| 223 if(SDL_BYTEORDER == SDL_BIG_ENDIAN) { \ | |
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224 dst[0] = (Uint8)(d >> 16); \ |
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225 dst[1] = (Uint8)(d >> 8); \ |
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226 dst[2] = (Uint8)(d); \ |
| 0 | 227 } else { \ |
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228 dst[0] = (Uint8)d; \ |
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229 dst[1] = (Uint8)(d >> 8); \ |
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230 dst[2] = (Uint8)(d >> 16); \ |
| 0 | 231 } \ |
| 232 break; \ | |
| 233 case 4: \ | |
| 234 *(Uint32 *)dst = d; \ | |
| 235 break; \ | |
| 236 } \ | |
| 237 src += bpp; \ | |
| 238 dst += bpp; \ | |
| 239 } \ | |
| 240 } while(0) | |
| 241 | |
| 242 /* | |
| 243 * Special case: 50% alpha (alpha=128) | |
| 244 * This is treated specially because it can be optimized very well, and | |
| 245 * since it is good for many cases of semi-translucency. | |
| 246 * The theory is to do all three components at the same time: | |
| 247 * First zero the lowest bit of each component, which gives us room to | |
| 248 * add them. Then shift right and add the sum of the lowest bits. | |
| 249 */ | |
| 250 #define ALPHA_BLIT32_888_50(to, from, length, bpp, alpha) \ | |
| 251 do { \ | |
| 252 int i; \ | |
| 253 Uint32 *src = (Uint32 *)(from); \ | |
| 254 Uint32 *dst = (Uint32 *)(to); \ | |
| 255 for(i = 0; i < (int)(length); i++) { \ | |
| 256 Uint32 s = *src++; \ | |
| 257 Uint32 d = *dst; \ | |
| 258 *dst++ = (((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) \ | |
| 259 + (s & d & 0x00010101); \ | |
| 260 } \ | |
| 261 } while(0) | |
| 262 | |
| 263 /* | |
| 264 * For 16bpp, we can actually blend two pixels in parallel, if we take | |
| 265 * care to shift before we add, not after. | |
| 266 */ | |
| 267 | |
| 268 /* helper: blend a single 16 bit pixel at 50% */ | |
| 269 #define BLEND16_50(dst, src, mask) \ | |
| 270 do { \ | |
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271 Uint32 s = *src++; \ |
| 0 | 272 Uint32 d = *dst; \ |
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273 *dst++ = (Uint16)((((s & mask) + (d & mask)) >> 1) + \ |
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274 (s & d & (~mask & 0xffff))); \ |
| 0 | 275 } while(0) |
| 276 | |
| 277 /* basic 16bpp blender. mask is the pixels to keep when adding. */ | |
| 278 #define ALPHA_BLIT16_50(to, from, length, bpp, alpha, mask) \ | |
| 279 do { \ | |
| 280 unsigned n = (length); \ | |
| 281 Uint16 *src = (Uint16 *)(from); \ | |
| 282 Uint16 *dst = (Uint16 *)(to); \ | |
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283 if(((uintptr_t)src ^ (uintptr_t)dst) & 3) { \ |
| 0 | 284 /* source and destination not in phase, blit one by one */ \ |
| 285 while(n--) \ | |
| 286 BLEND16_50(dst, src, mask); \ | |
| 287 } else { \ | |
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288 if((uintptr_t)src & 3) { \ |
| 0 | 289 /* first odd pixel */ \ |
| 290 BLEND16_50(dst, src, mask); \ | |
| 291 n--; \ | |
| 292 } \ | |
| 293 for(; n > 1; n -= 2) { \ | |
| 294 Uint32 s = *(Uint32 *)src; \ | |
| 295 Uint32 d = *(Uint32 *)dst; \ | |
| 296 *(Uint32 *)dst = ((s & (mask | mask << 16)) >> 1) \ | |
| 297 + ((d & (mask | mask << 16)) >> 1) \ | |
| 298 + (s & d & (~(mask | mask << 16))); \ | |
| 299 src += 2; \ | |
| 300 dst += 2; \ | |
| 301 } \ | |
| 302 if(n) \ | |
| 303 BLEND16_50(dst, src, mask); /* last odd pixel */ \ | |
| 304 } \ | |
| 305 } while(0) | |
| 306 | |
| 307 #define ALPHA_BLIT16_565_50(to, from, length, bpp, alpha) \ | |
| 308 ALPHA_BLIT16_50(to, from, length, bpp, alpha, 0xf7de) | |
| 309 | |
| 310 #define ALPHA_BLIT16_555_50(to, from, length, bpp, alpha) \ | |
| 311 ALPHA_BLIT16_50(to, from, length, bpp, alpha, 0xfbde) | |
| 312 | |
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313 #define CHOOSE_BLIT(blitter, alpha, fmt) \ |
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314 do { \ |
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315 if(alpha == 255) { \ |
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316 switch(fmt->BytesPerPixel) { \ |
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317 case 1: blitter(1, Uint8, OPAQUE_BLIT); break; \ |
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318 case 2: blitter(2, Uint8, OPAQUE_BLIT); break; \ |
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319 case 3: blitter(3, Uint8, OPAQUE_BLIT); break; \ |
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320 case 4: blitter(4, Uint16, OPAQUE_BLIT); break; \ |
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321 } \ |
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322 } else { \ |
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323 switch(fmt->BytesPerPixel) { \ |
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324 case 1: \ |
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325 /* No 8bpp alpha blitting */ \ |
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326 break; \ |
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327 \ |
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328 case 2: \ |
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329 switch(fmt->Rmask | fmt->Gmask | fmt->Bmask) { \ |
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330 case 0xffff: \ |
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331 if(fmt->Gmask == 0x07e0 \ |
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332 || fmt->Rmask == 0x07e0 \ |
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333 || fmt->Bmask == 0x07e0) { \ |
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334 if(alpha == 128) \ |
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335 blitter(2, Uint8, ALPHA_BLIT16_565_50); \ |
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336 else { \ |
| 0 | 337 blitter(2, Uint8, ALPHA_BLIT16_565); \ |
| 338 } \ | |
| 339 } else \ | |
| 340 goto general16; \ | |
| 341 break; \ | |
| 342 \ | |
| 343 case 0x7fff: \ | |
| 344 if(fmt->Gmask == 0x03e0 \ | |
| 345 || fmt->Rmask == 0x03e0 \ | |
| 346 || fmt->Bmask == 0x03e0) { \ | |
| 347 if(alpha == 128) \ | |
| 348 blitter(2, Uint8, ALPHA_BLIT16_555_50); \ | |
| 349 else { \ | |
| 350 blitter(2, Uint8, ALPHA_BLIT16_555); \ | |
| 351 } \ | |
| 352 break; \ | |
| 353 } \ | |
| 354 /* fallthrough */ \ | |
| 355 \ | |
| 356 default: \ | |
| 357 general16: \ | |
| 358 blitter(2, Uint8, ALPHA_BLIT_ANY); \ | |
| 359 } \ | |
| 360 break; \ | |
| 361 \ | |
| 362 case 3: \ | |
| 363 blitter(3, Uint8, ALPHA_BLIT_ANY); \ | |
| 364 break; \ | |
| 365 \ | |
| 366 case 4: \ | |
| 367 if((fmt->Rmask | fmt->Gmask | fmt->Bmask) == 0x00ffffff \ | |
| 368 && (fmt->Gmask == 0xff00 || fmt->Rmask == 0xff00 \ | |
| 369 || fmt->Bmask == 0xff00)) { \ | |
| 370 if(alpha == 128) \ | |
| 371 blitter(4, Uint16, ALPHA_BLIT32_888_50); \ | |
| 372 else \ | |
| 373 blitter(4, Uint16, ALPHA_BLIT32_888); \ | |
| 374 } else \ | |
| 375 blitter(4, Uint16, ALPHA_BLIT_ANY); \ | |
| 376 break; \ | |
| 377 } \ | |
| 378 } \ | |
| 379 } while(0) | |
| 380 | |
| 381 /* | |
| 382 * This takes care of the case when the surface is clipped on the left and/or | |
| 383 * right. Top clipping has already been taken care of. | |
| 384 */ | |
|
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385 static void |
|
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386 RLEClipBlit(int w, Uint8 * srcbuf, SDL_Surface * dst, |
|
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387 Uint8 * dstbuf, SDL_Rect * srcrect, unsigned alpha) |
| 0 | 388 { |
| 389 SDL_PixelFormat *fmt = dst->format; | |
| 390 | |
| 391 #define RLECLIPBLIT(bpp, Type, do_blit) \ | |
| 392 do { \ | |
| 393 int linecount = srcrect->h; \ | |
| 394 int ofs = 0; \ | |
| 395 int left = srcrect->x; \ | |
| 396 int right = left + srcrect->w; \ | |
| 397 dstbuf -= left * bpp; \ | |
| 398 for(;;) { \ | |
| 399 int run; \ | |
| 400 ofs += *(Type *)srcbuf; \ | |
| 401 run = ((Type *)srcbuf)[1]; \ | |
| 402 srcbuf += 2 * sizeof(Type); \ | |
| 403 if(run) { \ | |
| 404 /* clip to left and right borders */ \ | |
| 405 if(ofs < right) { \ | |
| 406 int start = 0; \ | |
| 407 int len = run; \ | |
| 408 int startcol; \ | |
| 409 if(left - ofs > 0) { \ | |
| 410 start = left - ofs; \ | |
| 411 len -= start; \ | |
| 412 if(len <= 0) \ | |
| 413 goto nocopy ## bpp ## do_blit; \ | |
| 414 } \ | |
| 415 startcol = ofs + start; \ | |
| 416 if(len > right - startcol) \ | |
| 417 len = right - startcol; \ | |
| 418 do_blit(dstbuf + startcol * bpp, srcbuf + start * bpp, \ | |
| 419 len, bpp, alpha); \ | |
| 420 } \ | |
| 421 nocopy ## bpp ## do_blit: \ | |
| 422 srcbuf += run * bpp; \ | |
| 423 ofs += run; \ | |
| 424 } else if(!ofs) \ | |
| 425 break; \ | |
| 426 if(ofs == w) { \ | |
| 427 ofs = 0; \ | |
| 428 dstbuf += dst->pitch; \ | |
| 429 if(!--linecount) \ | |
| 430 break; \ | |
| 431 } \ | |
| 432 } \ | |
| 433 } while(0) | |
| 434 | |
| 435 CHOOSE_BLIT(RLECLIPBLIT, alpha, fmt); | |
| 436 | |
| 437 #undef RLECLIPBLIT | |
| 438 | |
| 439 } | |
| 440 | |
| 441 | |
| 442 /* blit a colorkeyed RLE surface */ | |
|
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443 int |
|
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444 SDL_RLEBlit(SDL_Surface * src, SDL_Rect * srcrect, |
|
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445 SDL_Surface * dst, SDL_Rect * dstrect) |
| 0 | 446 { |
|
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447 Uint8 *dstbuf; |
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448 Uint8 *srcbuf; |
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449 int x, y; |
|
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450 int w = src->w; |
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451 unsigned alpha; |
| 0 | 452 |
|
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453 /* Lock the destination if necessary */ |
|
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454 if (SDL_MUSTLOCK(dst)) { |
|
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455 if (SDL_LockSurface(dst) < 0) { |
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456 return (-1); |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
457 } |
|
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458 } |
| 0 | 459 |
|
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460 /* Set up the source and destination pointers */ |
|
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461 x = dstrect->x; |
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462 y = dstrect->y; |
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463 dstbuf = (Uint8 *) dst->pixels |
|
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464 + y * dst->pitch + x * src->format->BytesPerPixel; |
|
2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
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|
465 srcbuf = (Uint8 *) src->map->data; |
| 0 | 466 |
|
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467 { |
|
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468 /* skip lines at the top if neccessary */ |
|
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469 int vskip = srcrect->y; |
|
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470 int ofs = 0; |
|
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471 if (vskip) { |
| 0 | 472 |
| 473 #define RLESKIP(bpp, Type) \ | |
| 474 for(;;) { \ | |
| 475 int run; \ | |
| 476 ofs += *(Type *)srcbuf; \ | |
| 477 run = ((Type *)srcbuf)[1]; \ | |
| 478 srcbuf += sizeof(Type) * 2; \ | |
| 479 if(run) { \ | |
| 480 srcbuf += run * bpp; \ | |
| 481 ofs += run; \ | |
| 482 } else if(!ofs) \ | |
| 483 goto done; \ | |
| 484 if(ofs == w) { \ | |
| 485 ofs = 0; \ | |
| 486 if(!--vskip) \ | |
| 487 break; \ | |
| 488 } \ | |
| 489 } | |
| 490 | |
|
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491 switch (src->format->BytesPerPixel) { |
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492 case 1: |
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493 RLESKIP(1, Uint8); |
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494 break; |
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495 case 2: |
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496 RLESKIP(2, Uint8); |
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497 break; |
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498 case 3: |
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499 RLESKIP(3, Uint8); |
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500 break; |
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501 case 4: |
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502 RLESKIP(4, Uint16); |
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503 break; |
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504 } |
| 0 | 505 |
| 506 #undef RLESKIP | |
| 507 | |
|
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508 } |
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509 } |
| 0 | 510 |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
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2262
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511 alpha = src->map->info.a; |
|
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512 /* if left or right edge clipping needed, call clip blit */ |
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513 if (srcrect->x || srcrect->w != src->w) { |
|
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514 RLEClipBlit(w, srcbuf, dst, dstbuf, srcrect, alpha); |
|
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515 } else { |
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516 SDL_PixelFormat *fmt = src->format; |
| 0 | 517 |
| 518 #define RLEBLIT(bpp, Type, do_blit) \ | |
| 519 do { \ | |
| 520 int linecount = srcrect->h; \ | |
| 521 int ofs = 0; \ | |
| 522 for(;;) { \ | |
| 523 unsigned run; \ | |
| 524 ofs += *(Type *)srcbuf; \ | |
| 525 run = ((Type *)srcbuf)[1]; \ | |
| 526 srcbuf += 2 * sizeof(Type); \ | |
| 527 if(run) { \ | |
| 528 do_blit(dstbuf + ofs * bpp, srcbuf, run, bpp, alpha); \ | |
| 529 srcbuf += run * bpp; \ | |
| 530 ofs += run; \ | |
| 531 } else if(!ofs) \ | |
| 532 break; \ | |
| 533 if(ofs == w) { \ | |
| 534 ofs = 0; \ | |
| 535 dstbuf += dst->pitch; \ | |
| 536 if(!--linecount) \ | |
| 537 break; \ | |
| 538 } \ | |
| 539 } \ | |
| 540 } while(0) | |
| 541 | |
|
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542 CHOOSE_BLIT(RLEBLIT, alpha, fmt); |
| 0 | 543 |
| 544 #undef RLEBLIT | |
|
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545 } |
| 0 | 546 |
|
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547 done: |
|
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548 /* Unlock the destination if necessary */ |
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549 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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550 SDL_UnlockSurface(dst); |
|
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551 } |
|
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552 return (0); |
| 0 | 553 } |
| 554 | |
| 555 #undef OPAQUE_BLIT | |
| 556 | |
| 557 /* | |
| 558 * Per-pixel blitting macros for translucent pixels: | |
| 559 * These use the same techniques as the per-surface blitting macros | |
| 560 */ | |
| 561 | |
| 562 /* | |
| 563 * For 32bpp pixels, we have made sure the alpha is stored in the top | |
| 564 * 8 bits, so proceed as usual | |
| 565 */ | |
| 566 #define BLIT_TRANSL_888(src, dst) \ | |
| 567 do { \ | |
| 568 Uint32 s = src; \ | |
| 569 Uint32 d = dst; \ | |
| 570 unsigned alpha = s >> 24; \ | |
| 571 Uint32 s1 = s & 0xff00ff; \ | |
| 572 Uint32 d1 = d & 0xff00ff; \ | |
| 573 d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; \ | |
| 574 s &= 0xff00; \ | |
| 575 d &= 0xff00; \ | |
| 576 d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ | |
|
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b039bfa19ccd
Save opaque alpha in the destination, fixes white spotlight in testalpha on Mac OS X.
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
577 dst = d1 | d | 0xff000000; \ |
| 0 | 578 } while(0) |
| 579 | |
| 580 /* | |
| 581 * For 16bpp pixels, we have stored the 5 most significant alpha bits in | |
| 582 * bits 5-10. As before, we can process all 3 RGB components at the same time. | |
| 583 */ | |
| 584 #define BLIT_TRANSL_565(src, dst) \ | |
| 585 do { \ | |
|
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5f52867ba65c
Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
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changeset
|
586 Uint32 s = src; \ |
| 0 | 587 Uint32 d = dst; \ |
| 588 unsigned alpha = (s & 0x3e0) >> 5; \ | |
| 589 s &= 0x07e0f81f; \ | |
| 590 d = (d | d << 16) & 0x07e0f81f; \ | |
| 591 d += (s - d) * alpha >> 5; \ | |
| 592 d &= 0x07e0f81f; \ | |
|
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Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
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changeset
|
593 dst = (Uint16)(d | d >> 16); \ |
| 0 | 594 } while(0) |
| 595 | |
| 596 #define BLIT_TRANSL_555(src, dst) \ | |
| 597 do { \ | |
|
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Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
598 Uint32 s = src; \ |
| 0 | 599 Uint32 d = dst; \ |
| 600 unsigned alpha = (s & 0x3e0) >> 5; \ | |
| 601 s &= 0x03e07c1f; \ | |
| 602 d = (d | d << 16) & 0x03e07c1f; \ | |
| 603 d += (s - d) * alpha >> 5; \ | |
| 604 d &= 0x03e07c1f; \ | |
|
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Update for Visual C++ 6.0
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
605 dst = (Uint16)(d | d >> 16); \ |
| 0 | 606 } while(0) |
| 607 | |
| 608 /* used to save the destination format in the encoding. Designed to be | |
| 609 macro-compatible with SDL_PixelFormat but without the unneeded fields */ | |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
610 typedef struct |
|
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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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|
611 { |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
612 Uint8 BytesPerPixel; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
613 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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diff
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|
614 Uint8 Gloss; |
|
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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
|
615 Uint8 Bloss; |
|
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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
|
616 Uint8 Rshift; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
617 Uint8 Gshift; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff
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|
618 Uint8 Bshift; |
|
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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
|
619 Uint8 Ashift; |
|
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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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|
620 Uint32 Rmask; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
621 Uint32 Gmask; |
|
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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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|
622 Uint32 Bmask; |
|
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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
|
623 Uint32 Amask; |
| 0 | 624 } RLEDestFormat; |
| 625 | |
| 626 /* blit a pixel-alpha RLE surface clipped at the right and/or left edges */ | |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
627 static void |
|
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
|
628 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.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
629 Uint8 * dstbuf, SDL_Rect * srcrect) |
| 0 | 630 { |
| 631 SDL_PixelFormat *df = dst->format; | |
| 632 /* | |
| 633 * clipped blitter: Ptype is the destination pixel type, | |
| 634 * Ctype the translucent count type, and do_blend the macro | |
| 635 * to blend one pixel. | |
| 636 */ | |
| 637 #define RLEALPHACLIPBLIT(Ptype, Ctype, do_blend) \ | |
| 638 do { \ | |
| 639 int linecount = srcrect->h; \ | |
| 640 int left = srcrect->x; \ | |
| 641 int right = left + srcrect->w; \ | |
| 642 dstbuf -= left * sizeof(Ptype); \ | |
| 643 do { \ | |
| 644 int ofs = 0; \ | |
| 645 /* blit opaque pixels on one line */ \ | |
| 646 do { \ | |
| 647 unsigned run; \ | |
| 648 ofs += ((Ctype *)srcbuf)[0]; \ | |
| 649 run = ((Ctype *)srcbuf)[1]; \ | |
| 650 srcbuf += 2 * sizeof(Ctype); \ | |
| 651 if(run) { \ | |
| 652 /* clip to left and right borders */ \ | |
| 653 int cofs = ofs; \ | |
| 654 int crun = run; \ | |
| 655 if(left - cofs > 0) { \ | |
| 656 crun -= left - cofs; \ | |
| 657 cofs = left; \ | |
| 658 } \ | |
| 659 if(crun > right - cofs) \ | |
| 660 crun = right - cofs; \ | |
| 661 if(crun > 0) \ | |
|
1
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
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diff
changeset
|
662 PIXEL_COPY(dstbuf + cofs * sizeof(Ptype), \ |
| 0 | 663 srcbuf + (cofs - ofs) * sizeof(Ptype), \ |
|
1
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
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diff
changeset
|
664 (unsigned)crun, sizeof(Ptype)); \ |
| 0 | 665 srcbuf += run * sizeof(Ptype); \ |
| 666 ofs += run; \ | |
| 667 } else if(!ofs) \ | |
| 668 return; \ | |
| 669 } while(ofs < w); \ | |
| 670 /* skip padding if necessary */ \ | |
| 671 if(sizeof(Ptype) == 2) \ | |
|
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84de7511f79f
Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents:
1428
diff
changeset
|
672 srcbuf += (uintptr_t)srcbuf & 2; \ |
| 0 | 673 /* blit translucent pixels on the same line */ \ |
| 674 ofs = 0; \ | |
| 675 do { \ | |
| 676 unsigned run; \ | |
| 677 ofs += ((Uint16 *)srcbuf)[0]; \ | |
| 678 run = ((Uint16 *)srcbuf)[1]; \ | |
| 679 srcbuf += 4; \ | |
| 680 if(run) { \ | |
| 681 /* clip to left and right borders */ \ | |
| 682 int cofs = ofs; \ | |
| 683 int crun = run; \ | |
| 684 if(left - cofs > 0) { \ | |
| 685 crun -= left - cofs; \ | |
| 686 cofs = left; \ | |
| 687 } \ | |
| 688 if(crun > right - cofs) \ | |
| 689 crun = right - cofs; \ | |
| 690 if(crun > 0) { \ | |
| 691 Ptype *dst = (Ptype *)dstbuf + cofs; \ | |
| 692 Uint32 *src = (Uint32 *)srcbuf + (cofs - ofs); \ | |
| 693 int i; \ | |
| 694 for(i = 0; i < crun; i++) \ | |
| 695 do_blend(src[i], dst[i]); \ | |
| 696 } \ | |
| 697 srcbuf += run * 4; \ | |
| 698 ofs += run; \ | |
| 699 } \ | |
| 700 } while(ofs < w); \ | |
| 701 dstbuf += dst->pitch; \ | |
| 702 } while(--linecount); \ | |
| 703 } while(0) | |
| 704 | |
|
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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
|
705 switch (df->BytesPerPixel) { |
| 0 | 706 case 2: |
|
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
|
707 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.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
708 RLEALPHACLIPBLIT(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:
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diff
changeset
|
709 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
|
710 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:
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diff
changeset
|
711 break; |
| 0 | 712 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:
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diff
changeset
|
713 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:
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diff
changeset
|
714 break; |
| 0 | 715 } |
| 716 } | |
| 717 | |
| 718 /* 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:
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diff
changeset
|
719 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
|
720 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
|
721 SDL_Surface * dst, SDL_Rect * dstrect) |
| 0 | 722 { |
| 723 int x, y; | |
| 724 int w = src->w; | |
| 725 Uint8 *srcbuf, *dstbuf; | |
| 726 SDL_PixelFormat *df = dst->format; | |
| 727 | |
| 728 /* 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
|
729 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
|
730 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
|
731 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
|
732 } |
| 0 | 733 } |
| 734 | |
| 735 x = dstrect->x; | |
| 736 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
|
737 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
|
738 srcbuf = (Uint8 *) src->map->data + sizeof(RLEDestFormat); |
| 0 | 739 |
| 740 { | |
|
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
|
741 /* 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:
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diff
changeset
|
742 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
|
743 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
|
744 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
|
745 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:
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diff
changeset
|
746 /* 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:
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diff
changeset
|
747 do { |
|
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
|
748 /* 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:
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diff
changeset
|
749 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:
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diff
changeset
|
750 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
|
751 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
|
752 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
|
753 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
|
754 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
|
755 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
|
756 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:
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diff
changeset
|
757 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
|
758 } 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
|
759 goto done; |
|
2735
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
760 } while (ofs < w); |
| 0 | 761 |
|
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
|
762 /* 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
|
763 srcbuf += (uintptr_t) srcbuf & 2; |
| 0 | 764 |
|
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
|
765 /* 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
|
766 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
|
767 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
|
768 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
|
769 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
|
770 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:
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diff
changeset
|
771 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
|
772 ofs += run; |
|
2735
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
773 } while (ofs < w); |
|
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
774 } while (--vskip); |
|
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
|
775 } 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
|
776 /* 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:
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diff
changeset
|
777 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
|
778 do { |
|
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
|
779 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
|
780 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
|
781 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:
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diff
changeset
|
782 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
|
783 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
|
784 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:
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diff
changeset
|
785 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:
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diff
changeset
|
786 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
|
787 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
|
788 } 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
|
789 goto done; |
|
2735
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
790 } while (ofs < w); |
|
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
791 } while (--vskip); |
|
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
|
792 } |
|
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
|
793 } |
| 0 | 794 } |
| 795 | |
| 796 /* if left or right edge clipping needed, call clip blit */ | |
|
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
|
797 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
|
798 RLEAlphaClipBlit(w, srcbuf, dst, dstbuf, srcrect); |
| 0 | 799 } else { |
| 800 | |
|
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
|
801 /* |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
802 * 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
|
803 * 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
|
804 * 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
|
805 */ |
| 0 | 806 #define RLEALPHABLIT(Ptype, Ctype, do_blend) \ |
| 807 do { \ | |
| 808 int linecount = srcrect->h; \ | |
| 809 do { \ | |
| 810 int ofs = 0; \ | |
| 811 /* blit opaque pixels on one line */ \ | |
| 812 do { \ | |
| 813 unsigned run; \ | |
| 814 ofs += ((Ctype *)srcbuf)[0]; \ | |
| 815 run = ((Ctype *)srcbuf)[1]; \ | |
| 816 srcbuf += 2 * sizeof(Ctype); \ | |
| 817 if(run) { \ | |
|
1
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
818 PIXEL_COPY(dstbuf + ofs * sizeof(Ptype), srcbuf, \ |
|
cf2af46e9e2a
Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
819 run, sizeof(Ptype)); \ |
| 0 | 820 srcbuf += run * sizeof(Ptype); \ |
| 821 ofs += run; \ | |
| 822 } else if(!ofs) \ | |
| 823 goto done; \ | |
| 824 } while(ofs < w); \ | |
| 825 /* skip padding if necessary */ \ | |
| 826 if(sizeof(Ptype) == 2) \ | |
|
1456
84de7511f79f
Fixed a bunch of 64-bit compatibility problems
Sam Lantinga <slouken@libsdl.org>
parents:
1428
diff
changeset
|
827 srcbuf += (uintptr_t)srcbuf & 2; \ |
| 0 | 828 /* blit translucent pixels on the same line */ \ |
| 829 ofs = 0; \ | |
| 830 do { \ | |
| 831 unsigned run; \ | |
| 832 ofs += ((Uint16 *)srcbuf)[0]; \ | |
| 833 run = ((Uint16 *)srcbuf)[1]; \ | |
| 834 srcbuf += 4; \ | |
| 835 if(run) { \ | |
| 836 Ptype *dst = (Ptype *)dstbuf + ofs; \ | |
| 837 unsigned i; \ | |
| 838 for(i = 0; i < run; i++) { \ | |
| 839 Uint32 src = *(Uint32 *)srcbuf; \ | |
| 840 do_blend(src, *dst); \ | |
| 841 srcbuf += 4; \ | |
| 842 dst++; \ | |
| 843 } \ | |
| 844 ofs += run; \ | |
| 845 } \ | |
| 846 } while(ofs < w); \ | |
| 847 dstbuf += dst->pitch; \ | |
| 848 } while(--linecount); \ | |
| 849 } while(0) | |
| 850 | |
|
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
|
851 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:
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diff
changeset
|
852 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:
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diff
changeset
|
853 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:
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diff
changeset
|
854 || 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:
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diff
changeset
|
855 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:
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diff
changeset
|
856 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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diff
changeset
|
857 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
|
858 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
|
859 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
|
860 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
|
861 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
|
862 } |
| 0 | 863 } |
| 864 | |
|
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
|
865 done: |
| 0 | 866 /* Unlock 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
|
867 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
|
868 SDL_UnlockSurface(dst); |
| 0 | 869 } |
| 870 return 0; | |
| 871 } | |
| 872 | |
| 873 /* | |
| 874 * Auxiliary functions: | |
| 875 * The encoding functions take 32bpp rgb + a, and | |
| 876 * return the number of bytes copied to the destination. | |
| 877 * The decoding functions copy to 32bpp rgb + a, and | |
| 878 * return the number of bytes copied from the source. | |
| 879 * These are only used in the encoder and un-RLE code and are therefore not | |
| 880 * highly optimised. | |
| 881 */ | |
| 882 | |
| 883 /* encode 32bpp rgb + a into 16bpp rgb, losing alpha */ | |
|
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
|
884 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:
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diff
changeset
|
885 copy_opaque_16(void *dst, Uint32 * src, int n, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
886 SDL_PixelFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 887 { |
| 888 int i; | |
| 889 Uint16 *d = dst; | |
|
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
|
890 for (i = 0; i < n; i++) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
891 unsigned r, g, b; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
892 RGB_FROM_PIXEL(*src, sfmt, r, g, b); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
893 PIXEL_FROM_RGB(*d, dfmt, r, g, b); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
894 src++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
895 d++; |
| 0 | 896 } |
| 897 return n * 2; | |
| 898 } | |
| 899 | |
| 900 /* decode opaque pixels from 16bpp to 32bpp rgb + a */ | |
|
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
|
901 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
|
902 uncopy_opaque_16(Uint32 * dst, void *src, int n, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
903 RLEDestFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 904 { |
| 905 int i; | |
| 906 Uint16 *s = src; | |
| 907 unsigned alpha = dfmt->Amask ? 255 : 0; | |
|
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
|
908 for (i = 0; i < n; i++) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
909 unsigned r, g, b; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
910 RGB_FROM_PIXEL(*s, sfmt, r, g, b); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
911 PIXEL_FROM_RGBA(*dst, dfmt, r, g, b, alpha); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
912 s++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
913 dst++; |
| 0 | 914 } |
| 915 return n * 2; | |
| 916 } | |
| 917 | |
| 918 | |
| 919 | |
| 920 /* encode 32bpp rgb + a into 32bpp G0RAB format for blitting into 565 */ | |
|
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
|
921 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
|
922 copy_transl_565(void *dst, Uint32 * src, int n, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
923 SDL_PixelFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 924 { |
| 925 int i; | |
| 926 Uint32 *d = dst; | |
|
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
|
927 for (i = 0; i < n; i++) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
928 unsigned r, g, b, a; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
929 Uint16 pix; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
930 RGBA_FROM_8888(*src, sfmt, r, g, b, a); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
931 PIXEL_FROM_RGB(pix, dfmt, r, g, b); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
932 *d = ((pix & 0x7e0) << 16) | (pix & 0xf81f) | ((a << 2) & 0x7e0); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
933 src++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
934 d++; |
| 0 | 935 } |
| 936 return n * 4; | |
| 937 } | |
| 938 | |
| 939 /* encode 32bpp rgb + a into 32bpp G0RAB format for blitting into 555 */ | |
|
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
|
940 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
|
941 copy_transl_555(void *dst, Uint32 * src, int n, |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
942 SDL_PixelFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 943 { |
| 944 int i; | |
| 945 Uint32 *d = dst; | |
|
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
|
946 for (i = 0; i < n; i++) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
947 unsigned r, g, b, a; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
948 Uint16 pix; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
949 RGBA_FROM_8888(*src, sfmt, r, g, b, a); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
950 PIXEL_FROM_RGB(pix, dfmt, r, g, b); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
951 *d = ((pix & 0x3e0) << 16) | (pix & 0xfc1f) | ((a << 2) & 0x3e0); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
952 src++; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
953 d++; |
| 0 | 954 } |
| 955 return n * 4; | |
| 956 } | |
| 957 | |
| 958 /* decode translucent pixels from 32bpp GORAB to 32bpp rgb + a */ | |
|
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
|
959 static int |
|
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
|
960 uncopy_transl_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.
Sam Lantinga <slouken@libsdl.org>
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|
961 RLEDestFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 962 { |
| 963 int i; | |
| 964 Uint32 *s = 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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|
965 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.
Sam Lantinga <slouken@libsdl.org>
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|
966 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.
Sam Lantinga <slouken@libsdl.org>
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|
967 Uint32 pix = *s++; |
|
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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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|
968 a = (pix & 0x3e0) >> 2; |
|
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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|
969 pix = (pix & ~0x3e0) | pix >> 16; |
|
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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
|
970 RGB_FROM_PIXEL(pix, sfmt, r, g, b); |
|
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
|
971 PIXEL_FROM_RGBA(*dst, dfmt, r, g, b, a); |
|
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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|
972 dst++; |
| 0 | 973 } |
| 974 return n * 4; | |
| 975 } | |
| 976 | |
| 977 /* encode 32bpp rgba into 32bpp rgba, keeping alpha (dual purpose) */ | |
|
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
|
978 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:
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changeset
|
979 copy_32(void *dst, Uint32 * src, int n, |
|
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
|
980 SDL_PixelFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 981 { |
| 982 int i; | |
| 983 Uint32 *d = dst; | |
|
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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|
984 for (i = 0; i < n; i++) { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
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changeset
|
985 unsigned r, g, b, a; |
|
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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|
986 Uint32 pixel; |
|
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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|
987 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.
Sam Lantinga <slouken@libsdl.org>
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|
988 PIXEL_FROM_RGB(pixel, dfmt, r, g, b); |
|
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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|
989 *d++ = pixel | a << 24; |
|
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
|
990 src++; |
| 0 | 991 } |
| 992 return n * 4; | |
| 993 } | |
| 994 | |
| 995 /* decode 32bpp rgba into 32bpp rgba, keeping alpha (dual purpose) */ | |
|
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
|
996 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:
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diff
changeset
|
997 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.
Sam Lantinga <slouken@libsdl.org>
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|
998 RLEDestFormat * sfmt, SDL_PixelFormat * dfmt) |
| 0 | 999 { |
| 1000 int i; | |
| 1001 Uint32 *s = src; | |
|
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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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|
1002 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.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1003 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.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1004 Uint32 pixel = *s++; |
|
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
|
1005 RGB_FROM_PIXEL(pixel, sfmt, r, g, b); |
|
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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|
1006 a = pixel >> 24; |
|
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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
|
1007 PIXEL_FROM_RGBA(*dst, dfmt, r, g, b, a); |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
1008 dst++; |
| 0 | 1009 } |
| 1010 return n * 4; | |
| 1011 } | |
| 1012 | |
| 1013 #define ISOPAQUE(pixel, fmt) ((((pixel) & fmt->Amask) >> fmt->Ashift) == 255) | |
| 1014 | |
| 1015 #define ISTRANSL(pixel, fmt) \ | |
| 1016 ((unsigned)((((pixel) & fmt->Amask) >> fmt->Ashift) - 1U) < 254U) | |
| 1017 | |
| 1018 /* convert surface to be quickly alpha-blittable onto dest, if possible */ | |
|
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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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|
1019 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:
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changeset
|
1020 RLEAlphaSurface(SDL_Surface * surface) |
| 0 | 1021 { |
| 1022 SDL_Surface *dest; | |
| 1023 SDL_PixelFormat *df; | |
| 1024 int maxsize = 0; | |
| 1025 int max_opaque_run; | |
| 1026 int max_transl_run = 65535; | |
| 1027 unsigned masksum; | |
| 1028 Uint8 *rlebuf, *dst; | |
|
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>
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|
1029 int (*copy_opaque) (void *, Uint32 *, int, |
|
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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|
1030 SDL_PixelFormat *, SDL_PixelFormat *); |
|
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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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|
1031 int (*copy_transl) (void *, Uint32 *, 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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|
1032 SDL_PixelFormat *, SDL_PixelFormat *); |
| 0 | 1033 |
| 1034 dest = surface->map->dst; | |
|
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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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|
1035 if (!dest) |
|
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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|
1036 return -1; |
| 0 | 1037 df = dest->format; |
|
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SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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|
1038 if (surface->format->BitsPerPixel != 32) |
|
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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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|
1039 return -1; /* only 32bpp source supported */ |
| 0 | 1040 |
| 1041 /* find out whether the destination is one we support, | |
| 1042 and determine the max size of the encoded result */ | |
| 1043 masksum = df->Rmask | df->Gmask | df->Bmask; | |
|
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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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|
1044 switch (df->BytesPerPixel) { |
| 0 | 1045 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>
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|
1046 /* 16bpp: only support 565 and 555 formats */ |
|
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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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|
1047 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:
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changeset
|
1048 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:
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|
1049 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>
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|
1050 || df->Rmask == 0x07e0 || df->Bmask == 0x07e0) { |
|
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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
|
1051 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:
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changeset
|
1052 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:
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|
1053 } 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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diff
changeset
|
1054 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:
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diff
changeset
|
1055 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
|
1056 case 0x7fff: |
|
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
|
1057 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>
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|
1058 || 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:
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changeset
|
1059 copy_opaque = copy_opaque_16; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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changeset
|
1060 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>
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|
1061 } 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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diff
changeset
|
1062 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:
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diff
changeset
|
1063 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
|
1064 default: |
|
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
|
1065 return -1; |
|
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
|
1066 } |
|
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
|
1067 max_opaque_run = 255; /* runs stored as bytes */ |
| 0 | 1068 |
|
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
|
1069 /* 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>
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changeset
|
1070 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>
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changeset
|
1071 maxsize = surface->h * (2 + (4 + 2) * (surface->w + 1)) + 2; |
|
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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
|
1072 break; |
| 0 | 1073 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>
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changeset
|
1074 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:
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diff
changeset
|
1075 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:
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changeset
|
1076 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>
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changeset
|
1077 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
|
1078 max_opaque_run = 255; /* runs stored as short ints */ |
| 0 | 1079 |
|
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>
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changeset
|
1080 /* 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>
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changeset
|
1081 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>
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changeset
|
1082 break; |
| 0 | 1083 default: |
|
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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
|
1084 return -1; /* anything else unsupported right now */ |
| 0 | 1085 } |
| 1086 | |
| 1087 maxsize += sizeof(RLEDestFormat); | |
|
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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
|
1088 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>
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diff
changeset
|
1089 if (!rlebuf) { |
|
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
|
1090 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
|
1091 return -1; |
| 0 | 1092 } |
| 1093 { | |
|
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
|
1094 /* 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>
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diff
changeset
|
1095 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>
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diff
changeset
|
1096 r->BytesPerPixel = df->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:
1456
diff
changeset
|
1097 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>
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diff
changeset
|
1098 r->Gloss = df->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
|
1099 r->Bloss = df->Bloss; |
|
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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
|
1100 r->Rshift = df->Rshift; |
|
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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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changeset
|
1101 r->Gshift = df->Gshift; |
|
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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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diff
changeset
|
1102 r->Bshift = df->Bshift; |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff
changeset
|
1103 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
|
1104 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:
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diff
changeset
|
1105 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
|
1106 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
|
1107 r->Amask = df->Amask; |
| 0 | 1108 } |
| 1109 dst = rlebuf + sizeof(RLEDestFormat); | |
| 1110 | |
| 1111 /* Do the actual encoding */ | |
| 1112 { | |
|
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
|
1113 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:
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diff
changeset
|
1114 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
|
1115 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
|
1116 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>
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changeset
|
1117 Uint8 *lastline = dst; /* end of last non-blank line */ |
| 0 | 1118 |
|
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
|
1119 /* opaque counts are 8 or 16 bits, depending on target depth */ |
| 0 | 1120 #define ADD_OPAQUE_COUNTS(n, m) \ |
| 1121 if(df->BytesPerPixel == 4) { \ | |
| 1122 ((Uint16 *)dst)[0] = n; \ | |
| 1123 ((Uint16 *)dst)[1] = m; \ | |
| 1124 dst += 4; \ | |
| 1125 } else { \ | |
| 1126 dst[0] = n; \ | |
| 1127 dst[1] = m; \ | |
| 1128 dst += 2; \ | |
| 1129 } | |
| 1130 | |
|
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
|
1131 /* translucent counts are always 16 bit */ |
| 0 | 1132 #define ADD_TRANSL_COUNTS(n, m) \ |
| 1133 (((Uint16 *)dst)[0] = n, ((Uint16 *)dst)[1] = m, dst += 4) | |
| 1134 | |
|
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
|
1135 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
|
1136 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
|
1137 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
|
1138 /* 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
|
1139 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
|
1140 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
|
1141 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
|
1142 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
|
1143 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
|
1144 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
|
1145 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
|
1146 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
|
1147 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
|
1148 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
|
1149 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
|
1150 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
|
1151 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
|
1152 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
|
1153 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
|
1154 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
|
1155 } |
|
c121d94672cb
SDL 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 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
|
1157 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
|
1158 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:
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diff
changeset
|
1159 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:
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changeset
|
1160 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
|
1161 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
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changeset
|
1162 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
|
1163 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
|
1164 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:
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changeset
|
1165 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
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changeset
|
1166 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
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changeset
|
1167 } |
|
2735
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
1168 } while (x < w); |
| 0 | 1169 |
|
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
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changeset
|
1170 /* 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
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changeset
|
1171 dst += (uintptr_t) dst & 2; |
| 0 | 1172 |
|
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
|
1173 /* 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
|
1174 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
|
1175 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
|
1176 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:
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diff
changeset
|
1177 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
|
1178 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
|
1179 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
|
1180 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
|
1181 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
|
1182 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
|
1183 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
|
1184 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
|
1185 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
|
1186 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
|
1187 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
|
1188 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
|
1189 } |
|
c121d94672cb
SDL 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 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
|
1191 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
|
1192 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
|
1193 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
|
1194 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
|
1195 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
|
1196 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
|
1197 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
|
1198 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:
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diff
changeset
|
1199 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:
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changeset
|
1200 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:
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diff
changeset
|
1201 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1202 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
|
1203 lastline = dst; |
|
2735
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
1204 } while (x < w); |
| 0 | 1205 |
|
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
|
1206 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:
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diff
changeset
|
1207 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
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changeset
|
1208 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>
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1456
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changeset
|
1209 ADD_OPAQUE_COUNTS(0, 0); |
| 0 | 1210 } |
| 1211 | |
| 1212 #undef ADD_OPAQUE_COUNTS | |
| 1213 #undef ADD_TRANSL_COUNTS | |
| 1214 | |
| 1215 /* 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
|
1216 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
|
1217 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
|
1218 surface->pixels = NULL; |
| 0 | 1219 } |
| 1220 | |
| 1221 /* realloc the buffer to release unused memory */ | |
| 1222 { | |
|
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
|
1223 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
|
1224 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
|
1225 p = rlebuf; |
|
2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents:
2222
diff
changeset
|
1226 surface->map->data = p; |
| 0 | 1227 } |
| 1228 | |
| 1229 return 0; | |
| 1230 } | |
| 1231 | |
|
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
|
1232 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
|
1233 getpix_8(Uint8 * srcbuf) |
| 0 | 1234 { |
| 1235 return *srcbuf; | |
| 1236 } | |
| 1237 | |
|
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
|
1238 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
|
1239 getpix_16(Uint8 * srcbuf) |
| 0 | 1240 { |
|
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
|
1241 return *(Uint16 *) srcbuf; |
| 0 | 1242 } |
| 1243 | |
|
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
|
1244 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
|
1245 getpix_24(Uint8 * srcbuf) |
| 0 | 1246 { |
|
1155
91569ec25acd
Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents:
944
diff
changeset
|
1247 #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
|
1248 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
|
1249 #else |
|
91569ec25acd
Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents:
944
diff
changeset
|
1250 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
|
1251 #endif |
| 0 | 1252 } |
| 1253 | |
|
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
|
1254 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
|
1255 getpix_32(Uint8 * srcbuf) |
| 0 | 1256 { |
|
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
|
1257 return *(Uint32 *) srcbuf; |
| 0 | 1258 } |
| 1259 | |
|
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
|
1260 typedef Uint32(*getpix_func) (Uint8 *); |
| 0 | 1261 |
| 3162 | 1262 static const getpix_func getpixes[4] = { |
| 0 | 1263 getpix_8, getpix_16, getpix_24, getpix_32 |
| 1264 }; | |
| 1265 | |
|
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
|
1266 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
|
1267 RLEColorkeySurface(SDL_Surface * surface) |
| 0 | 1268 { |
|
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
|
1269 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
|
1270 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
|
1271 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
|
1272 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
|
1273 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
|
1274 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
|
1275 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
|
1276 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
|
1277 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
|
1278 int w, h; |
| 0 | 1279 |
|
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
|
1280 /* 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
|
1281 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
|
1282 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
|
1283 /* 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
|
1284 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
|
1285 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
|
1286 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
|
1287 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
|
1288 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
|
1289 /* 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
|
1290 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
|
1291 + 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
|
1292 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
|
1293 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
|
1294 /* 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
|
1295 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
|
1296 + 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
|
1297 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
|
1298 } |
| 0 | 1299 |
|
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
|
1300 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
|
1301 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
|
1302 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
|
1303 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
|
1304 } |
| 0 | 1305 |
|
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
|
1306 /* 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
|
1307 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
|
1308 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
|
1309 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
|
1310 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
|
1311 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
|
1312 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
|
1313 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
|
1314 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
|
1315 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
|
1316 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
|
1317 h = surface->h; |
| 0 | 1318 |
| 1319 #define ADD_COUNTS(n, m) \ | |
| 1320 if(bpp == 4) { \ | |
| 1321 ((Uint16 *)dst)[0] = n; \ | |
| 1322 ((Uint16 *)dst)[1] = m; \ | |
| 1323 dst += 4; \ | |
| 1324 } else { \ | |
| 1325 dst[0] = n; \ | |
| 1326 dst[1] = m; \ | |
| 1327 dst += 2; \ | |
| 1328 } | |
| 1329 | |
|
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
|
1330 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
|
1331 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
|
1332 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
|
1333 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
|
1334 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
|
1335 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
|
1336 int skipstart = x; |
| 0 | 1337 |
|
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
|
1338 /* 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
|
1339 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
|
1340 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
|
1341 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
|
1342 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
|
1343 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
|
1344 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
|
1345 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
|
1346 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
|
1347 run = x - runstart; |
| 0 | 1348 |
|
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
|
1349 /* 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
|
1350 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
|
1351 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
|
1352 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
|
1353 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1354 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
|
1355 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
|
1356 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
|
1357 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
|
1358 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
|
1359 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
|
1360 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
|
1361 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
|
1362 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
|
1363 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
|
1364 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
|
1365 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
|
1366 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
|
1367 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1368 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
|
1369 lastline = dst; |
|
2735
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
1370 } while (x < w); |
| 0 | 1371 |
|
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
|
1372 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
|
1373 } |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1374 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
|
1375 ADD_COUNTS(0, 0); |
| 0 | 1376 |
| 1377 #undef ADD_COUNTS | |
| 1378 | |
|
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
|
1379 /* 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
|
1380 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
|
1381 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
|
1382 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
|
1383 } |
| 0 | 1384 |
|
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
|
1385 /* 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
|
1386 { |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1387 /* 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
|
1388 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
|
1389 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
|
1390 p = rlebuf; |
|
2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents:
2222
diff
changeset
|
1391 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
|
1392 } |
| 0 | 1393 |
|
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
|
1394 return (0); |
| 0 | 1395 } |
| 1396 | |
|
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
|
1397 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
|
1398 SDL_RLESurface(SDL_Surface * surface) |
| 0 | 1399 { |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1400 int flags; |
| 0 | 1401 |
|
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
|
1402 /* 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
|
1403 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
|
1404 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
|
1405 } |
| 0 | 1406 |
|
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
|
1407 /* 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
|
1408 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
|
1409 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
|
1410 } |
| 0 | 1411 |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1412 /* 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
|
1413 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
|
1414 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
|
1415 } |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1416 |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1417 /* 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
|
1418 flags = surface->map->info.flags; |
|
2267
c785543d1843
Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents:
2266
diff
changeset
|
1419 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
|
1420 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
|
1421 } |
| 0 | 1422 |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1423 /* 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
|
1424 if ((flags & SDL_COPY_MODULATE_COLOR) || |
|
2824
4dba7aa7ea77
Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents:
2817
diff
changeset
|
1425 ((flags & SDL_COPY_MODULATE_ALPHA) && surface->format->Amask) || |
|
2267
c785543d1843
Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents:
2266
diff
changeset
|
1426 (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
|
1427 (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
|
1428 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
|
1429 } |
| 0 | 1430 |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1431 /* 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
|
1432 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
|
1433 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
|
1434 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
|
1435 } |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1436 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
|
1437 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
|
1438 } |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1439 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
|
1440 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
|
1441 } else { |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1442 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
|
1443 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
|
1444 } |
|
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1445 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
|
1446 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
|
1447 } |
| 0 | 1448 |
|
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
|
1449 /* 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
|
1450 surface->flags |= SDL_RLEACCEL; |
| 0 | 1451 |
|
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
|
1452 return (0); |
| 0 | 1453 } |
| 1454 | |
| 1455 /* | |
| 1456 * Un-RLE a surface with pixel alpha | |
| 1457 * This may not give back exactly the image before RLE-encoding; all | |
| 1458 * completely transparent pixels will be lost, and colour and alpha depth | |
| 1459 * may have been reduced (when encoding for 16bpp targets). | |
| 1460 */ | |
|
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
|
1461 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
|
1462 UnRLEAlpha(SDL_Surface * surface) |
| 0 | 1463 { |
| 1464 Uint8 *srcbuf; | |
| 1465 Uint32 *dst; | |
| 1466 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
|
1467 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
|
1468 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
|
1469 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
|
1470 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
|
1471 RLEDestFormat *, SDL_PixelFormat *); |
| 0 | 1472 int w = surface->w; |
| 1473 int bpp = df->BytesPerPixel; | |
| 1474 | |
|
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
|
1475 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
|
1476 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
|
1477 uncopy_transl = uncopy_transl_16; |
| 0 | 1478 } 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
|
1479 uncopy_opaque = uncopy_transl = uncopy_32; |
| 0 | 1480 } |
| 1481 | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1482 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
|
1483 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
|
1484 return (SDL_FALSE); |
|
944
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents:
880
diff
changeset
|
1485 } |
| 0 | 1486 /* fill background with transparent pixels */ |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
1487 SDL_memset(surface->pixels, 0, surface->h * surface->pitch); |
| 0 | 1488 |
| 1489 dst = surface->pixels; | |
|
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 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
|
1491 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
|
1492 /* 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
|
1493 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
|
1494 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
|
1495 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
|
1496 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
|
1497 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
|
1498 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
|
1499 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
|
1500 } 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
|
1501 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
|
1502 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
|
1503 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
|
1504 } |
|
c121d94672cb
SDL 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 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
|
1506 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
|
1507 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
|
1508 } 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
|
1509 return (SDL_TRUE); |
|
2735
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
1510 } while (ofs < w); |
| 0 | 1511 |
|
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
|
1512 /* 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
|
1513 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
|
1514 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
|
1515 |
|
c121d94672cb
SDL 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 /* 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
|
1517 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
|
1518 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
|
1519 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
|
1520 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
|
1521 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
|
1522 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
|
1523 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
|
1524 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:
1456
diff
changeset
|
1525 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
|
1526 } |
|
2735
204be4fc2726
Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents:
2328
diff
changeset
|
1527 } while (ofs < w); |
|
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
|
1528 dst += surface->pitch >> 2; |
| 0 | 1529 } |
|
944
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents:
880
diff
changeset
|
1530 /* Make the compiler happy */ |
|
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
|
1531 return (SDL_TRUE); |
| 0 | 1532 } |
| 1533 | |
|
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
|
1534 void |
|
c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
1456
diff
changeset
|
1535 SDL_UnRLESurface(SDL_Surface * surface, int recode) |
| 0 | 1536 { |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1537 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:
1456
diff
changeset
|
1538 surface->flags &= ~SDL_RLEACCEL; |
| 0 | 1539 |
|
2222
926294b2bb4e
Emphasized the separation between SDL_Surface and SDL_Texture
Sam Lantinga <slouken@libsdl.org>
parents:
1895
diff
changeset
|
1540 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
|
1541 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
|
1542 SDL_Rect full; |
| 0 | 1543 |
|
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
|
1544 /* re-create the original 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
|
1545 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
|
1546 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
|
1547 /* 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
|
1548 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
|
1549 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
|
1550 } |
| 0 | 1551 |
|
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
|
1552 /* 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
|
1553 SDL_FillRect(surface, NULL, surface->map->info.colorkey); |
| 0 | 1554 |
|
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
|
1555 /* now render the encoded 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
|
1556 full.x = full.y = 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
|
1557 full.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
|
1558 full.h = surface->h; |
|
c121d94672cb
SDL 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 SDL_RLEBlit(surface, &full, surface, &full); |
|
c121d94672cb
SDL 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 } 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
|
1561 if (!UnRLEAlpha(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
|
1562 /* 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
|
1563 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
|
1564 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
|
1565 } |
|
c121d94672cb
SDL 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 } |
|
c121d94672cb
SDL 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 } |
|
2267
c785543d1843
Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents:
2266
diff
changeset
|
1568 surface->map->info.flags &= |
|
2798
5f3831f1c3ea
Fixed crash in testalpha. I think this was supposed to clear those bits. :)
Sam Lantinga <slouken@libsdl.org>
parents:
2735
diff
changeset
|
1569 ~(SDL_COPY_RLE_COLORKEY | 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
|
1570 |
|
2266
e61ad15a205f
More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents:
2262
diff
changeset
|
1571 if (surface->map->data) { |
|
2257
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents:
2222
diff
changeset
|
1572 SDL_free(surface->map->data); |
|
340942cfda48
Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents:
2222
diff
changeset
|
1573 surface->map->data = NULL; |
|
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
|
1574 } |
| 0 | 1575 } |
| 1576 } | |
| 1577 | |
|
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
|
1578 /* vi: set ts=4 sw=4 expandtab: */ |