Mercurial > otakunoraifu
annotate window/render.cc @ 67:419761c8d9b9
Add configure option to build scn2kdump.
| author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
|---|---|
| date | Wed, 23 Feb 2011 01:48:51 +0100 |
| parents | 4416cfac86ae |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright (c) 2004-2006 Kazunori "jagarl" Ueno | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * 3. The name of the author may not be used to endorse or promote products | |
| 14 * derived from this software without specific prior written permission. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
| 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 52 | 28 #include "font/font.h" |
| 29 #include "font/text.h" | |
|
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30 #include "SDL.h" |
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31 #include "render.h" |
| 52 | 32 #include "rect.h" |
| 33 #include "surface.h" | |
| 34 #include <stdio.h> | |
| 0 | 35 |
| 36 #ifndef ALPHA_MAX | |
| 37 #define ALPHA_MAX 255 | |
| 38 #endif | |
| 39 | |
| 40 Rect::Rect(const TextGlyph& letter) { | |
| 41 lx = letter.x + letter.glyph->bitmap_left; | |
| 42 rx = lx + letter.glyph->bitmap.width; | |
| 43 | |
| 44 ty = letter.y - letter.glyph->bitmap_top; | |
| 45 by = ty + letter.glyph->bitmap.rows; | |
| 46 } | |
| 47 | |
| 48 Rect::Rect(const class Surface& so) { | |
| 49 SDL_Surface* s = (SDL_Surface*)(&so); | |
| 50 lx = 0; ty = 0; | |
| 51 rx = s->w; by = s->h; | |
| 52 } | |
| 52 | 53 |
| 0 | 54 inline Rect _Rect(const SDL_Rect& r) { |
| 55 return Rect(r.x, r.y, r.x+r.w, r.y+r.h); | |
| 52 | 56 } |
| 57 | |
| 0 | 58 inline SDL_Rect SDLed(const Rect& rect) { |
| 59 SDL_Rect r; | |
| 60 r.x = rect.lx; | |
| 61 r.y = rect.ty; | |
| 62 r.w = rect.rx-rect.lx; | |
| 63 r.h = rect.by-rect.ty; | |
| 64 return r; | |
| 65 } | |
| 66 | |
| 67 Rect DSurfaceRenderText(TextGlyphStream::iterator start, TextGlyphStream::iterator end, const Rect& srcrect, | |
| 68 Surface* dst_o, const Rect& dstrect) { | |
| 69 | |
| 70 SDL_Surface* dst = (SDL_Surface*)dst_o; | |
| 71 Rect confine_to(srcrect); | |
| 72 Rect dst_clip(_Rect(dst->clip_rect)); | |
| 73 Rect drawn_rect(0,0,0,0); | |
| 74 | |
| 75 int dif_x = dstrect.lx - srcrect.lx; | |
| 76 int dif_y = dstrect.ty - srcrect.ty; | |
| 77 | |
| 78 dst_clip.rmove(-dif_x, -dif_y); | |
| 79 confine_to.intersect(dst_clip); | |
| 80 | |
| 81 TextGlyphStream::iterator it; | |
| 82 SDL_PixelFormat& fmt = *dst->format; | |
| 83 int ashift = fmt.Ashift - fmt.Aloss; int amask = fmt.Amask; | |
| 84 int dbpl = dst->pitch; | |
| 85 int dbpp = fmt.BytesPerPixel; | |
| 86 | |
| 87 SDL_LockSurface(dst); | |
| 88 for (it=start; it!=end; it++) { | |
| 89 Rect letter_r(*it); | |
| 90 letter_r.intersect(confine_to); | |
| 91 if (letter_r.empty()) continue; | |
| 92 drawn_rect.join(letter_r); | |
| 93 | |
| 94 int w = letter_r.width(); | |
| 95 int h = letter_r.height(); | |
| 96 int sbpl = it->glyph->bitmap.width; | |
| 97 | |
| 98 unsigned char* smem = it->glyph->bitmap.buffer + | |
| 99 (letter_r.ty - (it->y-it->glyph->bitmap_top)) * sbpl + | |
| 100 (letter_r.lx - (it->x+it->glyph->bitmap_left)); | |
| 101 char* dmem = (char*)dst->pixels + | |
| 102 (letter_r.ty + dif_y) * dbpl + | |
| 103 (letter_r.lx + dif_x) * dbpp; | |
| 104 Uint32 pixel = ((int(it->r)<<fmt.Rshift)&fmt.Rmask) |((int(it->g)<<fmt.Gshift)&fmt.Gmask) |((int(it->b)<<fmt.Bshift)&fmt.Bmask); | |
| 105 int i,j; | |
| 106 if (!it->is_rev) { | |
| 107 if (dbpp == 4) { | |
| 108 for (i=0; i<h; i++) { | |
| 109 for (j=0; j<w; j++) { | |
| 110 int alpha = smem[j]; | |
| 111 ((Uint32*)dmem)[j] = pixel | ((alpha << ashift)&amask); | |
| 112 } | |
| 113 smem += sbpl; dmem += dbpl; | |
| 114 } | |
| 115 } else if (dbpp == 2) { | |
| 116 for (i=0; i<h; i++) { | |
| 117 for (j=0; j<w; j++) { | |
| 118 int alpha = smem[j]; | |
| 119 ((Uint16*)dmem)[j] = pixel | ((alpha << ashift)&amask); | |
| 120 } | |
| 121 smem += sbpl; dmem += dbpl; | |
| 122 } | |
| 123 } else abort(); | |
| 124 } else { /* reversed */ | |
| 125 if (dbpp == 4) { | |
| 126 for (i=0; i<h; i++) { | |
| 127 for (j=0; j<w; j++) { | |
| 128 int alpha = 255 - smem[j]; | |
| 129 ((Uint32*)dmem)[j] = pixel | ((alpha << ashift)&amask); | |
| 130 } | |
| 131 smem += sbpl; dmem += dbpl; | |
| 132 } | |
| 133 } else if (dbpp == 2) { | |
| 134 for (i=0; i<h; i++) { | |
| 135 for (j=0; j<w; j++) { | |
| 136 int alpha = 255 - smem[j]; | |
| 137 ((Uint16*)dmem)[j] = pixel | ((alpha << ashift)&amask); | |
| 138 } | |
| 139 smem += sbpl; dmem += dbpl; | |
| 140 } | |
| 141 } else abort(); | |
| 142 } | |
| 143 } | |
| 144 SDL_UnlockSurface(dst); | |
| 145 drawn_rect.rmove(dif_x, dif_y); | |
| 146 return drawn_rect; | |
| 147 } | |
| 52 | 148 |
| 0 | 149 void DSurfaceFill(Surface* src_o, const Rect& rect, int r, int g, int b, int a) { |
| 150 SDL_Rect sr = SDLed(rect); | |
| 151 SDL_Surface* src = (SDL_Surface*)src_o; | |
| 152 SDL_FillRect( src, &sr, SDL_MapRGBA(src->format, r, g, b, a)); | |
| 153 } | |
| 154 | |
| 155 static void clip_rect(Rect& srcrect, Rect& dstrect, SDL_Surface* dstsurf) { | |
| 156 Rect confine_to(srcrect); | |
| 157 Rect dst_clip(_Rect(dstsurf->clip_rect)); | |
| 158 | |
| 159 int dif_x = dstrect.lx - srcrect.lx; | |
| 160 int dif_y = dstrect.ty - srcrect.ty; | |
| 161 | |
| 162 dst_clip.rmove(-dif_x, -dif_y); | |
| 163 confine_to.intersect(dst_clip); | |
| 164 | |
| 165 srcrect = confine_to; | |
| 166 dstrect = confine_to; | |
| 167 dstrect.rmove(dif_x, dif_y); | |
| 168 } | |
| 169 | |
| 170 void DSurfaceMove(Surface* src_o, const Rect& srcrect_o, Surface* dst_o, const Rect& dstrect_o) { | |
| 171 | |
| 172 SDL_Surface* dst = (SDL_Surface*)dst_o; | |
| 173 SDL_Surface* src = (SDL_Surface*)src_o; | |
| 174 | |
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175 if (dst->format->BytesPerPixel != src->format->BytesPerPixel) return; // RGB変換はできない |
| 0 | 176 |
| 177 Rect srcrect(srcrect_o), dstrect(dstrect_o); | |
| 178 clip_rect(srcrect, dstrect, dst); | |
| 179 | |
| 180 SDL_LockSurface(dst); SDL_LockSurface(src); | |
| 181 int sbpl = src->pitch; | |
| 182 int dbpl = dst->pitch; | |
| 183 int bpp = dst->format->BytesPerPixel; | |
| 184 int width = bpp * srcrect.width(); | |
| 185 int height = srcrect.height(); | |
| 186 char* smem = src_o->mem(srcrect); | |
| 187 char* dmem = dst_o->mem(dstrect); | |
| 188 char* smem_end = src_o->mem_end(srcrect); | |
| 189 char* dmem_end = dst_o->mem_end(dstrect); | |
| 190 | |
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191 // メモリに重なりがあり、src が上位側の場合、コピー方向を逆転する |
| 0 | 192 if (smem < dmem && dmem < smem_end) { |
| 193 int i,j; | |
| 194 for (i=0; i<height; i++) { | |
| 195 char* s = smem_end; char* d = dmem_end; | |
| 196 for (j=0; j<width; j++) | |
| 197 *--d = *--s; | |
| 198 dmem_end -= dbpl; smem_end -= sbpl; | |
| 199 } | |
| 200 } else { | |
| 201 int i; | |
| 202 for (i=0; i<height; i++) { | |
| 203 memcpy(dmem, smem, width); | |
| 204 dmem += dbpl; smem += sbpl; | |
| 205 } | |
| 206 } | |
| 207 SDL_UnlockSurface(dst); | |
| 208 SDL_UnlockSurface(src); | |
| 209 } | |
| 210 | |
| 211 void DSurfaceFillA(Surface* dsto, const Rect& rect, int r, int g, int b, int a) { | |
| 212 SDL_Surface* dst = (SDL_Surface*)dsto; | |
| 213 SDL_LockSurface( dst); | |
| 214 int dbpl = dst->pitch; | |
| 215 int bpp = dst->format->BytesPerPixel; | |
| 216 int width = rect.width(); | |
| 217 int height = rect.height(); | |
| 218 int amask = dst->format->Amask; | |
| 219 int ashift = dst->format->Ashift - dst->format->Aloss; | |
| 220 | |
| 221 char* dmem = (char*)(dst->pixels) + rect.ty*dbpl + rect.lx*bpp; | |
| 222 unsigned int pixel = SDL_MapRGBA(dst->format, r, g, b, 0); | |
| 223 unsigned int pixela = SDL_MapRGBA(dst->format, r, g, b, a); | |
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224 a += a>>7; /* 0-256 にする */ |
| 52 | 225 int i, j; |
| 0 | 226 for (i=0; i<height; i++) { |
| 227 char* d = dmem; | |
| 228 if (bpp == 4) { | |
| 229 for (j=0; j<width; j++) { | |
| 230 int alpha = (*(Uint32*)d)>>ashift; | |
| 231 if (alpha == 0) (*(Uint32*)d) = pixel; | |
| 232 else if (alpha == 255) *((Uint32*)d) = pixela; | |
| 233 else { *((Uint32*)d) = pixel | ((((alpha*a)>>8)<<ashift)&amask); } | |
| 234 d += bpp; | |
| 235 } | |
| 236 } else if (bpp == 2) { | |
| 237 for (j=0; j<width; j++) { | |
| 238 int alpha = (*(Uint16*)d)>>ashift; | |
| 239 if (alpha == 0) *((Uint16*)d) = pixel; | |
| 240 else if (alpha == 255) *((Uint16*)d) = pixela; | |
| 241 else { *((Uint16*)d) = pixel | ((((alpha*a)>>8)<<ashift)&amask); } | |
| 242 d += bpp; | |
| 243 } | |
| 244 } | |
| 245 dmem += dbpl; | |
| 246 } | |
| 247 SDL_UnlockSurface( dst); | |
| 248 } | |
| 249 | |
| 250 #define ASHIFT 24 | |
| 251 #define CMASK1 0xff00ff | |
| 252 #define CMASK2 0x00ff00 | |
| 253 | |
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254 inline void blit_pixel(Uint32* dest, Uint32* src, const unsigned char* alpha, bool use_srcalpha) { |
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255 Uint32 dest_value = *dest; |
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256 Uint32 src_value = *src; |
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257 Uint32 as = src_value >> ASHIFT; |
| 0 | 258 if (as == 255 || (!use_srcalpha) ) { |
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259 as = *alpha; |
| 0 | 260 } else { |
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261 as += (as >> 7); /* 0-0xff -> 0-0x100 */ |
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262 as *= *alpha; |
| 0 | 263 as >>= 8; |
| 264 } | |
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265 as += as >> 7; |
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266 // Isolate Red and Blue components |
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267 Uint32 src_c1 = src_value & CMASK1; |
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268 Uint32 dest_c1 = dest_value & CMASK1; |
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269 // Blend Red and Blue components |
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270 dest_c1 = (dest_c1 + (((src_c1-dest_c1) * as) >> 8)) & CMASK1; |
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271 // Isolate Green component |
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272 src_value &= CMASK2; |
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273 dest_value &= CMASK2; |
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274 // Blend Green component |
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275 dest_value = (dest_value + (((src_value-dest_value) * as) >> 8)) & CMASK2; |
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276 // Put it alltogether |
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277 *dest = dest_c1 | dest_value | 0xff000000; |
| 0 | 278 } |
| 52 | 279 |
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280 static void blit_line(Uint32* dest, Uint32* src, const unsigned char* alpha,int ax0, int ax1, int awidth, int aj0, int aj1, bool use_srcalpha) { |
| 0 | 281 int j; |
| 282 int ax = ax0; | |
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283 const unsigned char* a = alpha + ax0; |
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284 if (awidth == 1) { // わりとよくあるので最適化 |
| 0 | 285 for (j=aj0; j < aj1; j++) { |
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286 blit_pixel(dest++, src++, alpha, use_srcalpha); |
| 0 | 287 } |
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288 } |
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289 else |
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290 { |
| 0 | 291 for (j=aj0; j < aj1; j++) { |
| 292 for (; ax<awidth; ax++) | |
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293 blit_pixel(dest++, src++, a++, use_srcalpha); |
| 0 | 294 ax = 0; |
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295 a = alpha; |
| 0 | 296 } |
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297 for (; ax < ax1; ax++) |
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298 blit_pixel(dest++, src++, a++, use_srcalpha); |
| 0 | 299 } |
| 300 } | |
| 301 | |
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302 void DSurfaceBlitAlpha(Surface* src_o, const Rect& srcrect_o, Surface* dst_o, const Rect& dstrect_o, const unsigned char* alpha, const Rect& alpharect) |
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303 { |
| 0 | 304 SDL_Surface* dst = (SDL_Surface*)dst_o; |
| 305 SDL_Surface* src = (SDL_Surface*)src_o; | |
| 306 SDL_PixelFormat& fmt = *dst->format; | |
| 307 | |
| 308 Rect srcrect(srcrect_o), dstrect(dstrect_o); | |
| 309 clip_rect(srcrect, dstrect, dst); | |
| 310 | |
| 311 int awidth = alpharect.width(); | |
| 312 int aheight = alpharect.height(); | |
| 313 if (awidth == 0 || aheight == 0) return; | |
| 314 int ax0 = srcrect.lx % awidth; | |
| 315 int ay0 = srcrect.ty % aheight; | |
| 316 int aj0 = srcrect.lx / awidth; | |
| 317 int ai0 = srcrect.ty / aheight; | |
| 318 int ax1 = srcrect.rx % awidth; | |
| 319 int ay1 = srcrect.by % aheight; | |
| 320 int aj1 = srcrect.rx / awidth; | |
| 321 int ai1 = srcrect.by / aheight; | |
| 322 | |
| 323 SDL_LockSurface(dst); | |
| 324 SDL_LockSurface(src); | |
| 325 int dbpl = dst->pitch; | |
| 326 int sbpl = src->pitch; | |
| 327 int bpp = dst->format->BytesPerPixel; | |
| 328 | |
| 329 char* dmem = dst_o->mem(dstrect); | |
| 330 char* smem = src_o->mem(srcrect); | |
| 331 | |
| 332 const unsigned char* amem = alpha + ay0 * awidth; | |
| 333 int i; | |
| 334 int ay = ay0; | |
| 335 for (i = ai0; i < ai1; i++) { | |
| 336 for (; ay < aheight; ay++) { | |
| 337 if (src->format->Amask == 0) | |
| 338 blit_line( (Uint32*)dmem, (Uint32*)smem, amem,ax0, ax1, awidth, aj0, aj1, false); | |
| 339 else | |
| 340 blit_line( (Uint32*)dmem, (Uint32*)smem, amem,ax0, ax1, awidth, aj0, aj1, true); | |
| 341 amem += awidth; dmem += dbpl; smem += sbpl; | |
| 342 } | |
| 343 ay = 0; amem = alpha; | |
| 344 } | |
| 345 for (; ay < ay1; ay++) { | |
| 346 if (src->format->Amask == 0) | |
| 347 blit_line( (Uint32*)dmem, (Uint32*)smem, amem,ax0, ax1, awidth, aj0, aj1, false); | |
| 348 else | |
| 349 blit_line( (Uint32*)dmem, (Uint32*)smem, amem,ax0, ax1, awidth, aj0, aj1, true); | |
| 350 amem += awidth; dmem += dbpl; smem += sbpl; | |
| 351 } | |
| 352 SDL_UnlockSurface(src); | |
| 353 SDL_UnlockSurface(dst); | |
| 354 } | |
| 52 | 355 |
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356 void DSurfaceBlitAdd(Surface* src_o, const Rect& srcrect_o, Surface* dst_o, const Rect& dstrect_o, unsigned char alpha) { |
| 0 | 357 SDL_Surface* dst = (SDL_Surface*)dst_o; |
| 358 SDL_Surface* src = (SDL_Surface*)src_o; | |
| 359 | |
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360 if (dst->format->BytesPerPixel != src->format->BytesPerPixel) return; // RGB変換はできない |
| 0 | 361 |
| 362 Rect srcrect(srcrect_o), dstrect(dstrect_o); | |
| 363 clip_rect(srcrect, dstrect, dst); | |
| 364 | |
| 365 SDL_LockSurface(dst); SDL_LockSurface(src); | |
| 366 int sbpl = src->pitch; | |
| 367 int dbpl = dst->pitch; | |
| 368 int bpp = dst->format->BytesPerPixel; | |
| 369 int width = srcrect.width(); | |
| 370 int height = srcrect.height(); | |
| 371 char* smem = src_o->mem(srcrect); | |
| 372 char* dmem = dst_o->mem(dstrect); | |
| 373 char* smem_end = src_o->mem_end(srcrect); | |
| 374 char* dmem_end = dst_o->mem_end(dstrect); | |
| 375 | |
| 376 SDL_PixelFormat& fmt = *dst->format; | |
| 377 int rshift = fmt.Rshift - fmt.Rloss; int rmask = fmt.Rmask; | |
| 378 int gshift = fmt.Gshift - fmt.Gloss; int gmask = fmt.Gmask; | |
| 379 int bshift = fmt.Bshift - fmt.Bloss; int bmask = fmt.Bmask; | |
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380 int ashift = src->format->Ashift - src->format->Aloss; int amask = src->format->Amask; |
| 0 | 381 int allmask = rmask | gmask | bmask; |
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382 int i, j; |
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383 for (i=0; i < height; i++) { |
| 0 | 384 char* d = dmem; char* s = smem; |
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385 for (j=0; j < width; j++) { |
| 0 | 386 Uint32 sd = *(Uint32*)s; |
| 387 Uint32 dd = *(Uint32*)d; | |
| 388 if (sd&allmask) { | |
| 389 Uint32 sr = (sd&rmask)>>rshift; | |
| 390 Uint32 sg = (sd&gmask)>>gshift; | |
| 391 Uint32 sb = (sd&bmask)>>bshift; | |
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392 Uint32 alpha2 = alpha; |
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393 if (amask) |
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394 { |
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395 alpha2 = ((sd&amask)>>ashift); |
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396 alpha2 += alpha2 >> 7; |
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397 alpha2 *= alpha; |
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398 alpha2 >>= 8; |
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399 } |
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400 |
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401 if (alpha2 != ALPHA_MAX) { |
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402 sr = (sr*alpha2)>>8; |
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403 sg = (sg*alpha2)>>8; |
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404 sb = (sb*alpha2)>>8; |
| 0 | 405 } |
| 406 Uint32 dr = sr + ((dd&rmask)>>rshift); | |
| 407 Uint32 dg = sg + ((dd&gmask)>>gshift); | |
| 408 Uint32 db = sb + ((dd&bmask)>>bshift); | |
| 409 if (dr > 255) dr = 255; | |
| 410 if (dg > 255) dg = 255; | |
| 411 if (db > 255) db = 255; | |
| 412 *(Uint32*)d = ((dr<<rshift)&rmask)| ((dg<<gshift)&gmask)| ((db<<bshift)&bmask); | |
| 413 } | |
| 414 s += bpp; d += bpp; | |
| 415 } | |
| 416 dmem += dbpl; smem += sbpl; | |
| 417 } | |
| 418 SDL_UnlockSurface(src); | |
| 419 SDL_UnlockSurface(dst); | |
| 420 } | |
| 52 | 421 |
| 0 | 422 void DSurfaceBlitMultiply(Surface* src_o, const Rect& srcrect_o, Surface* dst_o, const Rect& dstrect_o) { |
| 423 SDL_Surface* dst = (SDL_Surface*)dst_o; | |
| 424 SDL_Surface* src = (SDL_Surface*)src_o; | |
| 425 | |
| 426 Rect srcrect(srcrect_o), dstrect(dstrect_o); | |
| 427 clip_rect(srcrect, dstrect, dst); | |
| 428 | |
| 429 SDL_LockSurface(dst); | |
| 430 SDL_LockSurface(src); | |
| 431 int dbpl = dst->pitch; | |
| 432 int sbpl = src->pitch; | |
| 433 int bpp = dst->format->BytesPerPixel; | |
| 434 int width = srcrect.width(); | |
| 435 int height = srcrect.height(); | |
| 436 char* dmem = dst_o->mem(dstrect); | |
| 437 char* smem = src_o->mem(srcrect); | |
| 438 | |
| 439 SDL_PixelFormat& fmt = *dst->format; | |
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440 /* dst の 0-255 を 0-pixel に変換する（積算） */ |
| 0 | 441 int i; |
| 442 int table1[256], table2[256], table3[256]; | |
| 443 Uint32 src_pixel = *(Uint32*)smem; | |
| 444 src_pixel |= 0xff000000; | |
| 445 int c1=src_pixel&255, c2=(src_pixel>>8)&255, c3=(src_pixel>>16)&255; | |
| 446 for (i=0; i<256; i++) { | |
| 447 int n = i + (i>>7); | |
| 448 table1[i] = (c1*n)>>8; | |
| 449 table2[i] = (c2*n)&0xff00; | |
| 450 table3[i] = ((c3*n)<<8) & 0xff0000; | |
| 451 } | |
| 452 int err_count = 0; | |
| 453 for (i=0; i<height; i++) { | |
| 454 Uint32* d = (Uint32*)dmem; | |
| 455 Uint32* s = (Uint32*)smem; | |
| 456 int j; for (j=0; j<width; j++) { | |
| 457 Uint32 dd = *d; | |
| 458 Uint32 ss = *s; | |
| 459 if (ss == src_pixel) { | |
| 460 *(Uint32*)d = table1[ dd & 0xff] | table2[ (dd>>8) & 0xff] | table3[ (dd>>16) & 0xff]; | |
| 461 } else if ( ((ss^src_pixel) & 0xffffff) == 0) { // r,g,b of ss == src_pixel | |
| 462 Uint32 as = ss>>ASHIFT; | |
| 463 as += as>>7; | |
| 464 ss = table1[ dd & 0xff] | table2[ (dd>>8) & 0xff] | table3[ (dd>>16) & 0xff]; | |
| 465 Uint32 s1 = ss&CMASK1; | |
| 466 Uint32 d1 = dd&CMASK1; | |
| 467 d1 = (d1 + (((s1-d1) * as) >> 8)) & CMASK1; | |
| 468 ss &= CMASK2; | |
| 469 dd &= CMASK2; | |
| 470 dd = (dd + (((ss-dd) * as) >> 8)) & CMASK2; | |
| 471 *(Uint32*)d = d1 | dd | 0xff000000; | |
| 472 } else err_count++; | |
| 473 d++; s++; | |
| 474 } | |
| 475 dmem += dbpl; smem += sbpl; | |
| 476 } | |
| 477 if (err_count) { | |
| 478 fprintf(stderr,"multipy_blit : surface does not have unique color(%08x); %d pixels in width %d, height %d\n", | |
| 479 src_pixel, err_count, width, height); | |
| 480 } | |
| 481 SDL_UnlockSurface(dst); | |
| 482 SDL_UnlockSurface(src); | |
| 483 } |