e14743d1 |
1 | /* |
2 | SDL - Simple DirectMedia Layer |
3 | Copyright (C) 1997-2009 Sam Lantinga |
4 | |
5 | This library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
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 |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with this library; if not, write to the Free Software |
17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
18 | |
19 | Sam Lantinga |
20 | slouken@libsdl.org |
21 | */ |
22 | #include "SDL_config.h" |
23 | |
24 | #include "SDL_video.h" |
25 | #include "SDL_blit.h" |
26 | |
27 | /* |
28 | In Visual C, VC6 has mmintrin.h in the "Processor Pack" add-on. |
29 | Checking if _mm_free is #defined in malloc.h is is the only way to |
30 | determine if the Processor Pack is installed, as far as I can tell. |
31 | */ |
32 | |
33 | #if SDL_ASSEMBLY_ROUTINES |
34 | # if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) |
35 | # define MMX_ASMBLIT 1 |
36 | # define GCC_ASMBLIT 1 |
37 | # elif defined(_MSC_VER) && defined(_M_IX86) |
38 | # if (_MSC_VER <= 1200) |
39 | # include <malloc.h> |
40 | # if defined(_mm_free) |
41 | # define HAVE_MMINTRIN_H 1 |
42 | # endif |
43 | # else /* Visual Studio > VC6 always has mmintrin.h */ |
44 | # define HAVE_MMINTRIN_H 1 |
45 | # endif |
46 | # if HAVE_MMINTRIN_H |
47 | # define MMX_ASMBLIT 1 |
48 | # define MSVC_ASMBLIT 1 |
49 | # endif |
50 | # endif |
51 | #endif /* SDL_ASSEMBLY_ROUTINES */ |
52 | |
53 | /* Function to check the CPU flags */ |
54 | #include "SDL_cpuinfo.h" |
55 | #if GCC_ASMBLIT |
56 | #include "mmx.h" |
57 | #elif MSVC_ASMBLIT |
58 | #include <mmintrin.h> |
59 | #include <mm3dnow.h> |
60 | #endif |
61 | |
62 | /* Functions to perform alpha blended blitting */ |
63 | |
64 | /* N->1 blending with per-surface alpha */ |
65 | static void BlitNto1SurfaceAlpha(SDL_BlitInfo *info) |
66 | { |
67 | int width = info->d_width; |
68 | int height = info->d_height; |
69 | Uint8 *src = info->s_pixels; |
70 | int srcskip = info->s_skip; |
71 | Uint8 *dst = info->d_pixels; |
72 | int dstskip = info->d_skip; |
73 | Uint8 *palmap = info->table; |
74 | SDL_PixelFormat *srcfmt = info->src; |
75 | SDL_PixelFormat *dstfmt = info->dst; |
76 | int srcbpp = srcfmt->BytesPerPixel; |
77 | |
78 | const unsigned A = srcfmt->alpha; |
79 | |
80 | while ( height-- ) { |
81 | DUFFS_LOOP4( |
82 | { |
83 | Uint32 Pixel; |
84 | unsigned sR; |
85 | unsigned sG; |
86 | unsigned sB; |
87 | unsigned dR; |
88 | unsigned dG; |
89 | unsigned dB; |
90 | DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel, sR, sG, sB); |
91 | dR = dstfmt->palette->colors[*dst].r; |
92 | dG = dstfmt->palette->colors[*dst].g; |
93 | dB = dstfmt->palette->colors[*dst].b; |
94 | ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); |
95 | dR &= 0xff; |
96 | dG &= 0xff; |
97 | dB &= 0xff; |
98 | /* Pack RGB into 8bit pixel */ |
99 | if ( palmap == NULL ) { |
100 | *dst =((dR>>5)<<(3+2))| |
101 | ((dG>>5)<<(2))| |
102 | ((dB>>6)<<(0)); |
103 | } else { |
104 | *dst = palmap[((dR>>5)<<(3+2))| |
105 | ((dG>>5)<<(2)) | |
106 | ((dB>>6)<<(0))]; |
107 | } |
108 | dst++; |
109 | src += srcbpp; |
110 | }, |
111 | width); |
112 | src += srcskip; |
113 | dst += dstskip; |
114 | } |
115 | } |
116 | |
117 | /* N->1 blending with pixel alpha */ |
118 | static void BlitNto1PixelAlpha(SDL_BlitInfo *info) |
119 | { |
120 | int width = info->d_width; |
121 | int height = info->d_height; |
122 | Uint8 *src = info->s_pixels; |
123 | int srcskip = info->s_skip; |
124 | Uint8 *dst = info->d_pixels; |
125 | int dstskip = info->d_skip; |
126 | Uint8 *palmap = info->table; |
127 | SDL_PixelFormat *srcfmt = info->src; |
128 | SDL_PixelFormat *dstfmt = info->dst; |
129 | int srcbpp = srcfmt->BytesPerPixel; |
130 | |
131 | /* FIXME: fix alpha bit field expansion here too? */ |
132 | while ( height-- ) { |
133 | DUFFS_LOOP4( |
134 | { |
135 | Uint32 Pixel; |
136 | unsigned sR; |
137 | unsigned sG; |
138 | unsigned sB; |
139 | unsigned sA; |
140 | unsigned dR; |
141 | unsigned dG; |
142 | unsigned dB; |
143 | DISEMBLE_RGBA(src,srcbpp,srcfmt,Pixel,sR,sG,sB,sA); |
144 | dR = dstfmt->palette->colors[*dst].r; |
145 | dG = dstfmt->palette->colors[*dst].g; |
146 | dB = dstfmt->palette->colors[*dst].b; |
147 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
148 | dR &= 0xff; |
149 | dG &= 0xff; |
150 | dB &= 0xff; |
151 | /* Pack RGB into 8bit pixel */ |
152 | if ( palmap == NULL ) { |
153 | *dst =((dR>>5)<<(3+2))| |
154 | ((dG>>5)<<(2))| |
155 | ((dB>>6)<<(0)); |
156 | } else { |
157 | *dst = palmap[((dR>>5)<<(3+2))| |
158 | ((dG>>5)<<(2)) | |
159 | ((dB>>6)<<(0)) ]; |
160 | } |
161 | dst++; |
162 | src += srcbpp; |
163 | }, |
164 | width); |
165 | src += srcskip; |
166 | dst += dstskip; |
167 | } |
168 | } |
169 | |
170 | /* colorkeyed N->1 blending with per-surface alpha */ |
171 | static void BlitNto1SurfaceAlphaKey(SDL_BlitInfo *info) |
172 | { |
173 | int width = info->d_width; |
174 | int height = info->d_height; |
175 | Uint8 *src = info->s_pixels; |
176 | int srcskip = info->s_skip; |
177 | Uint8 *dst = info->d_pixels; |
178 | int dstskip = info->d_skip; |
179 | Uint8 *palmap = info->table; |
180 | SDL_PixelFormat *srcfmt = info->src; |
181 | SDL_PixelFormat *dstfmt = info->dst; |
182 | int srcbpp = srcfmt->BytesPerPixel; |
183 | Uint32 ckey = srcfmt->colorkey; |
184 | |
185 | const int A = srcfmt->alpha; |
186 | |
187 | while ( height-- ) { |
188 | DUFFS_LOOP( |
189 | { |
190 | Uint32 Pixel; |
191 | unsigned sR; |
192 | unsigned sG; |
193 | unsigned sB; |
194 | unsigned dR; |
195 | unsigned dG; |
196 | unsigned dB; |
197 | DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel, sR, sG, sB); |
198 | if ( Pixel != ckey ) { |
199 | dR = dstfmt->palette->colors[*dst].r; |
200 | dG = dstfmt->palette->colors[*dst].g; |
201 | dB = dstfmt->palette->colors[*dst].b; |
202 | ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB); |
203 | dR &= 0xff; |
204 | dG &= 0xff; |
205 | dB &= 0xff; |
206 | /* Pack RGB into 8bit pixel */ |
207 | if ( palmap == NULL ) { |
208 | *dst =((dR>>5)<<(3+2))| |
209 | ((dG>>5)<<(2)) | |
210 | ((dB>>6)<<(0)); |
211 | } else { |
212 | *dst = palmap[((dR>>5)<<(3+2))| |
213 | ((dG>>5)<<(2)) | |
214 | ((dB>>6)<<(0)) ]; |
215 | } |
216 | } |
217 | dst++; |
218 | src += srcbpp; |
219 | }, |
220 | width); |
221 | src += srcskip; |
222 | dst += dstskip; |
223 | } |
224 | } |
225 | |
226 | #if GCC_ASMBLIT |
227 | /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
228 | static void BlitRGBtoRGBSurfaceAlpha128MMX(SDL_BlitInfo *info) |
229 | { |
230 | int width = info->d_width; |
231 | int height = info->d_height; |
232 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
233 | int srcskip = info->s_skip >> 2; |
234 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
235 | int dstskip = info->d_skip >> 2; |
236 | Uint32 dalpha = info->dst->Amask; |
237 | Uint64 load; |
238 | |
239 | load = 0x00fefefe00fefefeULL;/* alpha128 mask */ |
240 | movq_m2r(load, mm4); /* alpha128 mask -> mm4 */ |
241 | load = 0x0001010100010101ULL;/* !alpha128 mask */ |
242 | movq_m2r(load, mm3); /* !alpha128 mask -> mm3 */ |
243 | movd_m2r(dalpha, mm7); /* dst alpha mask */ |
244 | punpckldq_r2r(mm7, mm7); /* dst alpha mask | dst alpha mask -> mm7 */ |
245 | while(height--) { |
246 | DUFFS_LOOP_DOUBLE2( |
247 | { |
248 | Uint32 s = *srcp++; |
249 | Uint32 d = *dstp; |
250 | *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
251 | + (s & d & 0x00010101)) | dalpha; |
252 | },{ |
253 | movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */ |
254 | movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */ |
255 | |
256 | movq_m2r((*srcp), mm1);/* 2 x src -> mm1(ARGBARGB) */ |
257 | movq_r2r(mm1, mm5); /* 2 x src -> mm5(ARGBARGB) */ |
258 | |
259 | pand_r2r(mm4, mm6); /* dst & mask -> mm6 */ |
260 | pand_r2r(mm4, mm5); /* src & mask -> mm5 */ |
261 | paddd_r2r(mm6, mm5); /* mm6 + mm5 -> mm5 */ |
262 | pand_r2r(mm1, mm2); /* src & dst -> mm2 */ |
263 | psrld_i2r(1, mm5); /* mm5 >> 1 -> mm5 */ |
264 | pand_r2r(mm3, mm2); /* mm2 & !mask -> mm2 */ |
265 | paddd_r2r(mm5, mm2); /* mm5 + mm2 -> mm2 */ |
266 | |
267 | por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
268 | movq_r2m(mm2, (*dstp));/* mm2 -> 2 x dst pixels */ |
269 | dstp += 2; |
270 | srcp += 2; |
271 | }, width); |
272 | srcp += srcskip; |
273 | dstp += dstskip; |
274 | } |
275 | emms(); |
276 | } |
277 | |
278 | /* fast RGB888->(A)RGB888 blending with surface alpha */ |
279 | static void BlitRGBtoRGBSurfaceAlphaMMX(SDL_BlitInfo *info) |
280 | { |
281 | SDL_PixelFormat* df = info->dst; |
282 | unsigned alpha = info->src->alpha; |
283 | |
284 | if (alpha == 128 && (df->Rmask | df->Gmask | df->Bmask) == 0x00FFFFFF) { |
285 | /* only call a128 version when R,G,B occupy lower bits */ |
286 | BlitRGBtoRGBSurfaceAlpha128MMX(info); |
287 | } else { |
288 | int width = info->d_width; |
289 | int height = info->d_height; |
290 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
291 | int srcskip = info->s_skip >> 2; |
292 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
293 | int dstskip = info->d_skip >> 2; |
294 | |
295 | pxor_r2r(mm5, mm5); /* 0 -> mm5 */ |
296 | /* form the alpha mult */ |
297 | movd_m2r(alpha, mm4); /* 0000000A -> mm4 */ |
298 | punpcklwd_r2r(mm4, mm4); /* 00000A0A -> mm4 */ |
299 | punpckldq_r2r(mm4, mm4); /* 0A0A0A0A -> mm4 */ |
300 | alpha = (0xff << df->Rshift) | (0xff << df->Gshift) | (0xff << df->Bshift); |
301 | movd_m2r(alpha, mm0); /* 00000FFF -> mm0 */ |
302 | punpcklbw_r2r(mm0, mm0); /* 00FFFFFF -> mm0 */ |
303 | pand_r2r(mm0, mm4); /* 0A0A0A0A -> mm4, minus 1 chan */ |
304 | /* at this point mm4 can be 000A0A0A or 0A0A0A00 or another combo */ |
305 | movd_m2r(df->Amask, mm7); /* dst alpha mask */ |
306 | punpckldq_r2r(mm7, mm7); /* dst alpha mask | dst alpha mask -> mm7 */ |
307 | |
308 | while(height--) { |
309 | DUFFS_LOOP_DOUBLE2({ |
310 | /* One Pixel Blend */ |
311 | movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
312 | movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
313 | punpcklbw_r2r(mm5, mm1); /* 0A0R0G0B -> mm1(src) */ |
314 | punpcklbw_r2r(mm5, mm2); /* 0A0R0G0B -> mm2(dst) */ |
315 | |
316 | psubw_r2r(mm2, mm1);/* src - dst -> mm1 */ |
317 | pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
318 | psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */ |
319 | paddb_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */ |
320 | |
321 | packuswb_r2r(mm5, mm2); /* ARGBARGB -> mm2 */ |
322 | por_r2r(mm7, mm2); /* mm7(full alpha) | mm2 -> mm2 */ |
323 | movd_r2m(mm2, *dstp);/* mm2 -> pixel */ |
324 | ++srcp; |
325 | ++dstp; |
326 | },{ |
327 | /* Two Pixels Blend */ |
328 | movq_m2r((*srcp), mm0);/* 2 x src -> mm0(ARGBARGB)*/ |
329 | movq_m2r((*dstp), mm2);/* 2 x dst -> mm2(ARGBARGB) */ |
330 | movq_r2r(mm0, mm1); /* 2 x src -> mm1(ARGBARGB) */ |
331 | movq_r2r(mm2, mm6); /* 2 x dst -> mm6(ARGBARGB) */ |
332 | |
333 | punpcklbw_r2r(mm5, mm0); /* low - 0A0R0G0B -> mm0(src1) */ |
334 | punpckhbw_r2r(mm5, mm1); /* high - 0A0R0G0B -> mm1(src2) */ |
335 | punpcklbw_r2r(mm5, mm2); /* low - 0A0R0G0B -> mm2(dst1) */ |
336 | punpckhbw_r2r(mm5, mm6); /* high - 0A0R0G0B -> mm6(dst2) */ |
337 | |
338 | psubw_r2r(mm2, mm0);/* src1 - dst1 -> mm0 */ |
339 | pmullw_r2r(mm4, mm0); /* mm0 * alpha -> mm0 */ |
340 | psrlw_i2r(8, mm0); /* mm0 >> 8 -> mm1 */ |
341 | paddb_r2r(mm0, mm2); /* mm0 + mm2(dst1) -> mm2 */ |
342 | |
343 | psubw_r2r(mm6, mm1);/* src2 - dst2 -> mm1 */ |
344 | pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
345 | psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1 */ |
346 | paddb_r2r(mm1, mm6); /* mm1 + mm6(dst2) -> mm6 */ |
347 | |
348 | packuswb_r2r(mm6, mm2); /* ARGBARGB -> mm2 */ |
349 | por_r2r(mm7, mm2); /* mm7(dst alpha) | mm2 -> mm2 */ |
350 | |
351 | movq_r2m(mm2, *dstp);/* mm2 -> 2 x pixel */ |
352 | |
353 | srcp += 2; |
354 | dstp += 2; |
355 | }, width); |
356 | srcp += srcskip; |
357 | dstp += dstskip; |
358 | } |
359 | emms(); |
360 | } |
361 | } |
362 | |
363 | /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
364 | static void BlitRGBtoRGBPixelAlphaMMX(SDL_BlitInfo *info) |
365 | { |
366 | int width = info->d_width; |
367 | int height = info->d_height; |
368 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
369 | int srcskip = info->s_skip >> 2; |
370 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
371 | int dstskip = info->d_skip >> 2; |
372 | SDL_PixelFormat* sf = info->src; |
373 | Uint32 amask = sf->Amask; |
374 | |
375 | pxor_r2r(mm6, mm6); /* 0 -> mm6 */ |
376 | /* form multiplication mask */ |
377 | movd_m2r(sf->Amask, mm7); /* 0000F000 -> mm7 */ |
378 | punpcklbw_r2r(mm7, mm7); /* FF000000 -> mm7 */ |
379 | pcmpeqb_r2r(mm0, mm0); /* FFFFFFFF -> mm0 */ |
380 | movq_r2r(mm0, mm3); /* FFFFFFFF -> mm3 (for later) */ |
381 | pxor_r2r(mm0, mm7); /* 00FFFFFF -> mm7 (mult mask) */ |
382 | /* form channel masks */ |
383 | movq_r2r(mm7, mm0); /* 00FFFFFF -> mm0 */ |
384 | packsswb_r2r(mm6, mm0); /* 00000FFF -> mm0 (channel mask) */ |
385 | packsswb_r2r(mm6, mm3); /* 0000FFFF -> mm3 */ |
386 | pxor_r2r(mm0, mm3); /* 0000F000 -> mm3 (~channel mask) */ |
387 | /* get alpha channel shift */ |
388 | __asm__ __volatile__ ( |
389 | "movd %0, %%mm5" |
390 | : : "rm" ((Uint32) sf->Ashift) ); /* Ashift -> mm5 */ |
391 | |
392 | while(height--) { |
393 | DUFFS_LOOP4({ |
394 | Uint32 alpha = *srcp & amask; |
395 | /* FIXME: Here we special-case opaque alpha since the |
396 | compositioning used (>>8 instead of /255) doesn't handle |
397 | it correctly. Also special-case alpha=0 for speed? |
398 | Benchmark this! */ |
399 | if(alpha == 0) { |
400 | /* do nothing */ |
401 | } else if(alpha == amask) { |
402 | /* opaque alpha -- copy RGB, keep dst alpha */ |
403 | /* using MMX here to free up regular registers for other things */ |
404 | movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
405 | movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
406 | pand_r2r(mm0, mm1); /* src & chanmask -> mm1 */ |
407 | pand_r2r(mm3, mm2); /* dst & ~chanmask -> mm2 */ |
408 | por_r2r(mm1, mm2); /* src | dst -> mm2 */ |
409 | movd_r2m(mm2, (*dstp)); /* mm2 -> dst */ |
410 | } else { |
411 | movd_m2r((*srcp), mm1);/* src(ARGB) -> mm1 (0000ARGB)*/ |
412 | punpcklbw_r2r(mm6, mm1); /* 0A0R0G0B -> mm1 */ |
413 | |
414 | movd_m2r((*dstp), mm2);/* dst(ARGB) -> mm2 (0000ARGB)*/ |
415 | punpcklbw_r2r(mm6, mm2); /* 0A0R0G0B -> mm2 */ |
416 | |
417 | __asm__ __volatile__ ( |
418 | "movd %0, %%mm4" |
419 | : : "r" (alpha) ); /* 0000A000 -> mm4 */ |
420 | psrld_r2r(mm5, mm4); /* mm4 >> mm5 -> mm4 (0000000A) */ |
421 | punpcklwd_r2r(mm4, mm4); /* 00000A0A -> mm4 */ |
422 | punpcklwd_r2r(mm4, mm4); /* 0A0A0A0A -> mm4 */ |
423 | pand_r2r(mm7, mm4); /* 000A0A0A -> mm4, preserve dst alpha on add */ |
424 | |
425 | /* blend */ |
426 | psubw_r2r(mm2, mm1);/* src - dst -> mm1 */ |
427 | pmullw_r2r(mm4, mm1); /* mm1 * alpha -> mm1 */ |
428 | psrlw_i2r(8, mm1); /* mm1 >> 8 -> mm1(000R0G0B) */ |
429 | paddb_r2r(mm1, mm2); /* mm1 + mm2(dst) -> mm2 */ |
430 | |
431 | packuswb_r2r(mm6, mm2); /* 0000ARGB -> mm2 */ |
432 | movd_r2m(mm2, *dstp);/* mm2 -> dst */ |
433 | } |
434 | ++srcp; |
435 | ++dstp; |
436 | }, width); |
437 | srcp += srcskip; |
438 | dstp += dstskip; |
439 | } |
440 | emms(); |
441 | } |
442 | /* End GCC_ASMBLIT */ |
443 | |
444 | #elif MSVC_ASMBLIT |
445 | /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
446 | static void BlitRGBtoRGBSurfaceAlpha128MMX(SDL_BlitInfo *info) |
447 | { |
448 | int width = info->d_width; |
449 | int height = info->d_height; |
450 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
451 | int srcskip = info->s_skip >> 2; |
452 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
453 | int dstskip = info->d_skip >> 2; |
454 | Uint32 dalpha = info->dst->Amask; |
455 | |
456 | __m64 src1, src2, dst1, dst2, lmask, hmask, dsta; |
457 | |
458 | hmask = _mm_set_pi32(0x00fefefe, 0x00fefefe); /* alpha128 mask -> hmask */ |
459 | lmask = _mm_set_pi32(0x00010101, 0x00010101); /* !alpha128 mask -> lmask */ |
460 | dsta = _mm_set_pi32(dalpha, dalpha); /* dst alpha mask -> dsta */ |
461 | |
462 | while (height--) { |
463 | int n = width; |
464 | if ( n & 1 ) { |
465 | Uint32 s = *srcp++; |
466 | Uint32 d = *dstp; |
467 | *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
468 | + (s & d & 0x00010101)) | dalpha; |
469 | n--; |
470 | } |
471 | |
472 | for (n >>= 1; n > 0; --n) { |
473 | dst1 = *(__m64*)dstp; /* 2 x dst -> dst1(ARGBARGB) */ |
474 | dst2 = dst1; /* 2 x dst -> dst2(ARGBARGB) */ |
475 | |
476 | src1 = *(__m64*)srcp; /* 2 x src -> src1(ARGBARGB) */ |
477 | src2 = src1; /* 2 x src -> src2(ARGBARGB) */ |
478 | |
479 | dst2 = _mm_and_si64(dst2, hmask); /* dst & mask -> dst2 */ |
480 | src2 = _mm_and_si64(src2, hmask); /* src & mask -> src2 */ |
481 | src2 = _mm_add_pi32(src2, dst2); /* dst2 + src2 -> src2 */ |
482 | src2 = _mm_srli_pi32(src2, 1); /* src2 >> 1 -> src2 */ |
483 | |
484 | dst1 = _mm_and_si64(dst1, src1); /* src & dst -> dst1 */ |
485 | dst1 = _mm_and_si64(dst1, lmask); /* dst1 & !mask -> dst1 */ |
486 | dst1 = _mm_add_pi32(dst1, src2); /* src2 + dst1 -> dst1 */ |
487 | dst1 = _mm_or_si64(dst1, dsta); /* dsta(full alpha) | dst1 -> dst1 */ |
488 | |
489 | *(__m64*)dstp = dst1; /* dst1 -> 2 x dst pixels */ |
490 | dstp += 2; |
491 | srcp += 2; |
492 | } |
493 | |
494 | srcp += srcskip; |
495 | dstp += dstskip; |
496 | } |
497 | _mm_empty(); |
498 | } |
499 | |
500 | /* fast RGB888->(A)RGB888 blending with surface alpha */ |
501 | static void BlitRGBtoRGBSurfaceAlphaMMX(SDL_BlitInfo *info) |
502 | { |
503 | SDL_PixelFormat* df = info->dst; |
504 | Uint32 chanmask = df->Rmask | df->Gmask | df->Bmask; |
505 | unsigned alpha = info->src->alpha; |
506 | |
507 | if (alpha == 128 && (df->Rmask | df->Gmask | df->Bmask) == 0x00FFFFFF) { |
508 | /* only call a128 version when R,G,B occupy lower bits */ |
509 | BlitRGBtoRGBSurfaceAlpha128MMX(info); |
510 | } else { |
511 | int width = info->d_width; |
512 | int height = info->d_height; |
513 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
514 | int srcskip = info->s_skip >> 2; |
515 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
516 | int dstskip = info->d_skip >> 2; |
517 | Uint32 dalpha = df->Amask; |
518 | Uint32 amult; |
519 | |
520 | __m64 src1, src2, dst1, dst2, mm_alpha, mm_zero, dsta; |
521 | |
522 | mm_zero = _mm_setzero_si64(); /* 0 -> mm_zero */ |
523 | /* form the alpha mult */ |
524 | amult = alpha | (alpha << 8); |
525 | amult = amult | (amult << 16); |
526 | chanmask = (0xff << df->Rshift) | (0xff << df->Gshift) | (0xff << df->Bshift); |
527 | mm_alpha = _mm_set_pi32(0, amult & chanmask); /* 0000AAAA -> mm_alpha, minus 1 chan */ |
528 | mm_alpha = _mm_unpacklo_pi8(mm_alpha, mm_zero); /* 0A0A0A0A -> mm_alpha, minus 1 chan */ |
529 | /* at this point mm_alpha can be 000A0A0A or 0A0A0A00 or another combo */ |
530 | dsta = _mm_set_pi32(dalpha, dalpha); /* dst alpha mask -> dsta */ |
531 | |
532 | while (height--) { |
533 | int n = width; |
534 | if (n & 1) { |
535 | /* One Pixel Blend */ |
536 | src2 = _mm_cvtsi32_si64(*srcp); /* src(ARGB) -> src2 (0000ARGB)*/ |
537 | src2 = _mm_unpacklo_pi8(src2, mm_zero); /* 0A0R0G0B -> src2 */ |
538 | |
539 | dst1 = _mm_cvtsi32_si64(*dstp); /* dst(ARGB) -> dst1 (0000ARGB)*/ |
540 | dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* 0A0R0G0B -> dst1 */ |
541 | |
542 | src2 = _mm_sub_pi16(src2, dst1); /* src2 - dst2 -> src2 */ |
543 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
544 | src2 = _mm_srli_pi16(src2, 8); /* src2 >> 8 -> src2 */ |
545 | dst1 = _mm_add_pi8(src2, dst1); /* src2 + dst1 -> dst1 */ |
546 | |
547 | dst1 = _mm_packs_pu16(dst1, mm_zero); /* 0000ARGB -> dst1 */ |
548 | dst1 = _mm_or_si64(dst1, dsta); /* dsta | dst1 -> dst1 */ |
549 | *dstp = _mm_cvtsi64_si32(dst1); /* dst1 -> pixel */ |
550 | |
551 | ++srcp; |
552 | ++dstp; |
553 | |
554 | n--; |
555 | } |
556 | |
557 | for (n >>= 1; n > 0; --n) { |
558 | /* Two Pixels Blend */ |
559 | src1 = *(__m64*)srcp; /* 2 x src -> src1(ARGBARGB)*/ |
560 | src2 = src1; /* 2 x src -> src2(ARGBARGB) */ |
561 | src1 = _mm_unpacklo_pi8(src1, mm_zero); /* low - 0A0R0G0B -> src1 */ |
562 | src2 = _mm_unpackhi_pi8(src2, mm_zero); /* high - 0A0R0G0B -> src2 */ |
563 | |
564 | dst1 = *(__m64*)dstp;/* 2 x dst -> dst1(ARGBARGB) */ |
565 | dst2 = dst1; /* 2 x dst -> dst2(ARGBARGB) */ |
566 | dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* low - 0A0R0G0B -> dst1 */ |
567 | dst2 = _mm_unpackhi_pi8(dst2, mm_zero); /* high - 0A0R0G0B -> dst2 */ |
568 | |
569 | src1 = _mm_sub_pi16(src1, dst1);/* src1 - dst1 -> src1 */ |
570 | src1 = _mm_mullo_pi16(src1, mm_alpha); /* src1 * alpha -> src1 */ |
571 | src1 = _mm_srli_pi16(src1, 8); /* src1 >> 8 -> src1 */ |
572 | dst1 = _mm_add_pi8(src1, dst1); /* src1 + dst1(dst1) -> dst1 */ |
573 | |
574 | src2 = _mm_sub_pi16(src2, dst2);/* src2 - dst2 -> src2 */ |
575 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
576 | src2 = _mm_srli_pi16(src2, 8); /* src2 >> 8 -> src2 */ |
577 | dst2 = _mm_add_pi8(src2, dst2); /* src2 + dst2(dst2) -> dst2 */ |
578 | |
579 | dst1 = _mm_packs_pu16(dst1, dst2); /* 0A0R0G0B(res1), 0A0R0G0B(res2) -> dst1(ARGBARGB) */ |
580 | dst1 = _mm_or_si64(dst1, dsta); /* dsta | dst1 -> dst1 */ |
581 | |
582 | *(__m64*)dstp = dst1; /* dst1 -> 2 x pixel */ |
583 | |
584 | srcp += 2; |
585 | dstp += 2; |
586 | } |
587 | srcp += srcskip; |
588 | dstp += dstskip; |
589 | } |
590 | _mm_empty(); |
591 | } |
592 | } |
593 | |
594 | /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
595 | static void BlitRGBtoRGBPixelAlphaMMX(SDL_BlitInfo *info) |
596 | { |
597 | int width = info->d_width; |
598 | int height = info->d_height; |
599 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
600 | int srcskip = info->s_skip >> 2; |
601 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
602 | int dstskip = info->d_skip >> 2; |
603 | SDL_PixelFormat* sf = info->src; |
604 | Uint32 chanmask = sf->Rmask | sf->Gmask | sf->Bmask; |
605 | Uint32 amask = sf->Amask; |
606 | Uint32 ashift = sf->Ashift; |
607 | Uint64 multmask; |
608 | |
609 | __m64 src1, dst1, mm_alpha, mm_zero, dmask; |
610 | |
611 | mm_zero = _mm_setzero_si64(); /* 0 -> mm_zero */ |
612 | multmask = ~(0xFFFFi64 << (ashift * 2)); |
613 | dmask = *(__m64*) &multmask; /* dst alpha mask -> dmask */ |
614 | |
615 | while(height--) { |
616 | DUFFS_LOOP4({ |
617 | Uint32 alpha = *srcp & amask; |
618 | if (alpha == 0) { |
619 | /* do nothing */ |
620 | } else if (alpha == amask) { |
621 | /* opaque alpha -- copy RGB, keep dst alpha */ |
622 | *dstp = (*srcp & chanmask) | (*dstp & ~chanmask); |
623 | } else { |
624 | src1 = _mm_cvtsi32_si64(*srcp); /* src(ARGB) -> src1 (0000ARGB)*/ |
625 | src1 = _mm_unpacklo_pi8(src1, mm_zero); /* 0A0R0G0B -> src1 */ |
626 | |
627 | dst1 = _mm_cvtsi32_si64(*dstp); /* dst(ARGB) -> dst1 (0000ARGB)*/ |
628 | dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* 0A0R0G0B -> dst1 */ |
629 | |
630 | mm_alpha = _mm_cvtsi32_si64(alpha); /* alpha -> mm_alpha (0000000A) */ |
631 | mm_alpha = _mm_srli_si64(mm_alpha, ashift); /* mm_alpha >> ashift -> mm_alpha(0000000A) */ |
632 | mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
633 | mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
634 | mm_alpha = _mm_and_si64(mm_alpha, dmask); /* 000A0A0A -> mm_alpha, preserve dst alpha on add */ |
635 | |
636 | /* blend */ |
637 | src1 = _mm_sub_pi16(src1, dst1);/* src1 - dst1 -> src1 */ |
638 | src1 = _mm_mullo_pi16(src1, mm_alpha); /* (src1 - dst1) * alpha -> src1 */ |
639 | src1 = _mm_srli_pi16(src1, 8); /* src1 >> 8 -> src1(000R0G0B) */ |
640 | dst1 = _mm_add_pi8(src1, dst1); /* src1 + dst1 -> dst1(0A0R0G0B) */ |
641 | dst1 = _mm_packs_pu16(dst1, mm_zero); /* 0000ARGB -> dst1 */ |
642 | |
643 | *dstp = _mm_cvtsi64_si32(dst1); /* dst1 -> pixel */ |
644 | } |
645 | ++srcp; |
646 | ++dstp; |
647 | }, width); |
648 | srcp += srcskip; |
649 | dstp += dstskip; |
650 | } |
651 | _mm_empty(); |
652 | } |
653 | /* End MSVC_ASMBLIT */ |
654 | |
655 | #endif /* GCC_ASMBLIT, MSVC_ASMBLIT */ |
656 | |
657 | #if SDL_ALTIVEC_BLITTERS |
658 | #if __MWERKS__ |
659 | #pragma altivec_model on |
660 | #endif |
661 | #if HAVE_ALTIVEC_H |
662 | #include <altivec.h> |
663 | #endif |
664 | #include <assert.h> |
665 | |
666 | #if (defined(__MACOSX__) && (__GNUC__ < 4)) |
667 | #define VECUINT8_LITERAL(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \ |
668 | (vector unsigned char) ( a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p ) |
669 | #define VECUINT16_LITERAL(a,b,c,d,e,f,g,h) \ |
670 | (vector unsigned short) ( a,b,c,d,e,f,g,h ) |
671 | #else |
672 | #define VECUINT8_LITERAL(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \ |
673 | (vector unsigned char) { a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p } |
674 | #define VECUINT16_LITERAL(a,b,c,d,e,f,g,h) \ |
675 | (vector unsigned short) { a,b,c,d,e,f,g,h } |
676 | #endif |
677 | |
678 | #define UNALIGNED_PTR(x) (((size_t) x) & 0x0000000F) |
679 | #define VECPRINT(msg, v) do { \ |
680 | vector unsigned int tmpvec = (vector unsigned int)(v); \ |
681 | unsigned int *vp = (unsigned int *)&tmpvec; \ |
682 | printf("%s = %08X %08X %08X %08X\n", msg, vp[0], vp[1], vp[2], vp[3]); \ |
683 | } while (0) |
684 | |
685 | /* the permuation vector that takes the high bytes out of all the appropriate shorts |
686 | (vector unsigned char)( |
687 | 0x00, 0x10, 0x02, 0x12, |
688 | 0x04, 0x14, 0x06, 0x16, |
689 | 0x08, 0x18, 0x0A, 0x1A, |
690 | 0x0C, 0x1C, 0x0E, 0x1E ); |
691 | */ |
692 | #define VEC_MERGE_PERMUTE() (vec_add(vec_lvsl(0, (int*)NULL), (vector unsigned char)vec_splat_u16(0x0F))) |
693 | #define VEC_U32_24() (vec_add(vec_splat_u32(12), vec_splat_u32(12))) |
694 | #define VEC_ALPHA_MASK() ((vector unsigned char)vec_sl((vector unsigned int)vec_splat_s8(-1), VEC_U32_24())) |
695 | #define VEC_ALIGNER(src) ((UNALIGNED_PTR(src)) \ |
696 | ? vec_lvsl(0, src) \ |
697 | : vec_add(vec_lvsl(8, src), vec_splat_u8(8))) |
698 | |
699 | |
700 | #define VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1_16, v8_16) do { \ |
701 | /* vtemp1 contains source AAGGAAGGAAGGAAGG */ \ |
702 | vector unsigned short vtemp1 = vec_mule(vs, valpha); \ |
703 | /* vtemp2 contains source RRBBRRBBRRBBRRBB */ \ |
704 | vector unsigned short vtemp2 = vec_mulo(vs, valpha); \ |
705 | /* valpha2 is 255-alpha */ \ |
706 | vector unsigned char valpha2 = vec_nor(valpha, valpha); \ |
707 | /* vtemp3 contains dest AAGGAAGGAAGGAAGG */ \ |
708 | vector unsigned short vtemp3 = vec_mule(vd, valpha2); \ |
709 | /* vtemp4 contains dest RRBBRRBBRRBBRRBB */ \ |
710 | vector unsigned short vtemp4 = vec_mulo(vd, valpha2); \ |
711 | /* add source and dest */ \ |
712 | vtemp1 = vec_add(vtemp1, vtemp3); \ |
713 | vtemp2 = vec_add(vtemp2, vtemp4); \ |
714 | /* vtemp1 = (vtemp1 + 1) + ((vtemp1 + 1) >> 8) */ \ |
715 | vtemp1 = vec_add(vtemp1, v1_16); \ |
716 | vtemp3 = vec_sr(vtemp1, v8_16); \ |
717 | vtemp1 = vec_add(vtemp1, vtemp3); \ |
718 | /* vtemp2 = (vtemp2 + 1) + ((vtemp2 + 1) >> 8) */ \ |
719 | vtemp2 = vec_add(vtemp2, v1_16); \ |
720 | vtemp4 = vec_sr(vtemp2, v8_16); \ |
721 | vtemp2 = vec_add(vtemp2, vtemp4); \ |
722 | /* (>>8) and get ARGBARGBARGBARGB */ \ |
723 | vd = (vector unsigned char)vec_perm(vtemp1, vtemp2, mergePermute); \ |
724 | } while (0) |
725 | |
726 | /* Calculate the permute vector used for 32->32 swizzling */ |
727 | static vector unsigned char calc_swizzle32(const SDL_PixelFormat *srcfmt, |
728 | const SDL_PixelFormat *dstfmt) |
729 | { |
730 | /* |
731 | * We have to assume that the bits that aren't used by other |
732 | * colors is alpha, and it's one complete byte, since some formats |
733 | * leave alpha with a zero mask, but we should still swizzle the bits. |
734 | */ |
735 | /* ARGB */ |
736 | const static struct SDL_PixelFormat default_pixel_format = { |
737 | NULL, 0, 0, |
738 | 0, 0, 0, 0, |
739 | 16, 8, 0, 24, |
740 | 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000, |
741 | 0, 0}; |
742 | if (!srcfmt) { |
743 | srcfmt = &default_pixel_format; |
744 | } |
745 | if (!dstfmt) { |
746 | dstfmt = &default_pixel_format; |
747 | } |
748 | const vector unsigned char plus = VECUINT8_LITERAL |
749 | ( 0x00, 0x00, 0x00, 0x00, |
750 | 0x04, 0x04, 0x04, 0x04, |
751 | 0x08, 0x08, 0x08, 0x08, |
752 | 0x0C, 0x0C, 0x0C, 0x0C ); |
753 | vector unsigned char vswiz; |
754 | vector unsigned int srcvec; |
755 | #define RESHIFT(X) (3 - ((X) >> 3)) |
756 | Uint32 rmask = RESHIFT(srcfmt->Rshift) << (dstfmt->Rshift); |
757 | Uint32 gmask = RESHIFT(srcfmt->Gshift) << (dstfmt->Gshift); |
758 | Uint32 bmask = RESHIFT(srcfmt->Bshift) << (dstfmt->Bshift); |
759 | Uint32 amask; |
760 | /* Use zero for alpha if either surface doesn't have alpha */ |
761 | if (dstfmt->Amask) { |
762 | amask = ((srcfmt->Amask) ? RESHIFT(srcfmt->Ashift) : 0x10) << (dstfmt->Ashift); |
763 | } else { |
764 | amask = 0x10101010 & ((dstfmt->Rmask | dstfmt->Gmask | dstfmt->Bmask) ^ 0xFFFFFFFF); |
765 | } |
766 | #undef RESHIFT |
767 | ((unsigned int *)(char*)&srcvec)[0] = (rmask | gmask | bmask | amask); |
768 | vswiz = vec_add(plus, (vector unsigned char)vec_splat(srcvec, 0)); |
769 | return(vswiz); |
770 | } |
771 | |
772 | static void Blit32to565PixelAlphaAltivec(SDL_BlitInfo *info) |
773 | { |
774 | int height = info->d_height; |
775 | Uint8 *src = (Uint8 *)info->s_pixels; |
776 | int srcskip = info->s_skip; |
777 | Uint8 *dst = (Uint8 *)info->d_pixels; |
778 | int dstskip = info->d_skip; |
779 | SDL_PixelFormat *srcfmt = info->src; |
780 | |
781 | vector unsigned char v0 = vec_splat_u8(0); |
782 | vector unsigned short v8_16 = vec_splat_u16(8); |
783 | vector unsigned short v1_16 = vec_splat_u16(1); |
784 | vector unsigned short v2_16 = vec_splat_u16(2); |
785 | vector unsigned short v3_16 = vec_splat_u16(3); |
786 | vector unsigned int v8_32 = vec_splat_u32(8); |
787 | vector unsigned int v16_32 = vec_add(v8_32, v8_32); |
788 | vector unsigned short v3f = VECUINT16_LITERAL( |
789 | 0x003f, 0x003f, 0x003f, 0x003f, |
790 | 0x003f, 0x003f, 0x003f, 0x003f); |
791 | vector unsigned short vfc = VECUINT16_LITERAL( |
792 | 0x00fc, 0x00fc, 0x00fc, 0x00fc, |
793 | 0x00fc, 0x00fc, 0x00fc, 0x00fc); |
794 | |
795 | /* |
796 | 0x10 - 0x1f is the alpha |
797 | 0x00 - 0x0e evens are the red |
798 | 0x01 - 0x0f odds are zero |
799 | */ |
800 | vector unsigned char vredalpha1 = VECUINT8_LITERAL( |
801 | 0x10, 0x00, 0x01, 0x01, |
802 | 0x10, 0x02, 0x01, 0x01, |
803 | 0x10, 0x04, 0x01, 0x01, |
804 | 0x10, 0x06, 0x01, 0x01 |
805 | ); |
806 | vector unsigned char vredalpha2 = (vector unsigned char)( |
807 | vec_add((vector unsigned int)vredalpha1, vec_sl(v8_32, v16_32)) |
808 | ); |
809 | /* |
810 | 0x00 - 0x0f is ARxx ARxx ARxx ARxx |
811 | 0x11 - 0x0f odds are blue |
812 | */ |
813 | vector unsigned char vblue1 = VECUINT8_LITERAL( |
814 | 0x00, 0x01, 0x02, 0x11, |
815 | 0x04, 0x05, 0x06, 0x13, |
816 | 0x08, 0x09, 0x0a, 0x15, |
817 | 0x0c, 0x0d, 0x0e, 0x17 |
818 | ); |
819 | vector unsigned char vblue2 = (vector unsigned char)( |
820 | vec_add((vector unsigned int)vblue1, v8_32) |
821 | ); |
822 | /* |
823 | 0x00 - 0x0f is ARxB ARxB ARxB ARxB |
824 | 0x10 - 0x0e evens are green |
825 | */ |
826 | vector unsigned char vgreen1 = VECUINT8_LITERAL( |
827 | 0x00, 0x01, 0x10, 0x03, |
828 | 0x04, 0x05, 0x12, 0x07, |
829 | 0x08, 0x09, 0x14, 0x0b, |
830 | 0x0c, 0x0d, 0x16, 0x0f |
831 | ); |
832 | vector unsigned char vgreen2 = (vector unsigned char)( |
833 | vec_add((vector unsigned int)vgreen1, vec_sl(v8_32, v8_32)) |
834 | ); |
835 | vector unsigned char vgmerge = VECUINT8_LITERAL( |
836 | 0x00, 0x02, 0x00, 0x06, |
837 | 0x00, 0x0a, 0x00, 0x0e, |
838 | 0x00, 0x12, 0x00, 0x16, |
839 | 0x00, 0x1a, 0x00, 0x1e); |
840 | vector unsigned char mergePermute = VEC_MERGE_PERMUTE(); |
841 | vector unsigned char vpermute = calc_swizzle32(srcfmt, NULL); |
842 | vector unsigned char valphaPermute = vec_and(vec_lvsl(0, (int *)NULL), vec_splat_u8(0xC)); |
843 | |
844 | vector unsigned short vf800 = (vector unsigned short)vec_splat_u8(-7); |
845 | vf800 = vec_sl(vf800, vec_splat_u16(8)); |
846 | |
847 | while(height--) { |
848 | int extrawidth; |
849 | vector unsigned char valigner; |
850 | vector unsigned char vsrc; |
851 | vector unsigned char voverflow; |
852 | int width = info->d_width; |
853 | |
854 | #define ONE_PIXEL_BLEND(condition, widthvar) \ |
855 | while (condition) { \ |
856 | Uint32 Pixel; \ |
857 | unsigned sR, sG, sB, dR, dG, dB, sA; \ |
858 | DISEMBLE_RGBA(src, 4, srcfmt, Pixel, sR, sG, sB, sA); \ |
859 | if(sA) { \ |
860 | unsigned short dstpixel = *((unsigned short *)dst); \ |
861 | dR = (dstpixel >> 8) & 0xf8; \ |
862 | dG = (dstpixel >> 3) & 0xfc; \ |
863 | dB = (dstpixel << 3) & 0xf8; \ |
864 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
865 | *((unsigned short *)dst) = ( \ |
866 | ((dR & 0xf8) << 8) | ((dG & 0xfc) << 3) | (dB >> 3) \ |
867 | ); \ |
868 | } \ |
869 | src += 4; \ |
870 | dst += 2; \ |
871 | widthvar--; \ |
872 | } |
873 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dst)) && (width), width); |
874 | extrawidth = (width % 8); |
875 | valigner = VEC_ALIGNER(src); |
876 | vsrc = (vector unsigned char)vec_ld(0, src); |
877 | width -= extrawidth; |
878 | while (width) { |
879 | vector unsigned char valpha; |
880 | vector unsigned char vsrc1, vsrc2; |
881 | vector unsigned char vdst1, vdst2; |
882 | vector unsigned short vR, vG, vB; |
883 | vector unsigned short vpixel, vrpixel, vgpixel, vbpixel; |
884 | |
885 | /* Load 8 pixels from src as ARGB */ |
886 | voverflow = (vector unsigned char)vec_ld(15, src); |
887 | vsrc = vec_perm(vsrc, voverflow, valigner); |
888 | vsrc1 = vec_perm(vsrc, vsrc, vpermute); |
889 | src += 16; |
890 | vsrc = (vector unsigned char)vec_ld(15, src); |
891 | voverflow = vec_perm(voverflow, vsrc, valigner); |
892 | vsrc2 = vec_perm(voverflow, voverflow, vpermute); |
893 | src += 16; |
894 | |
895 | /* Load 8 pixels from dst as XRGB */ |
896 | voverflow = vec_ld(0, dst); |
897 | vR = vec_and((vector unsigned short)voverflow, vf800); |
898 | vB = vec_sl((vector unsigned short)voverflow, v3_16); |
899 | vG = vec_sl(vB, v2_16); |
900 | vdst1 = (vector unsigned char)vec_perm((vector unsigned char)vR, (vector unsigned char)vR, vredalpha1); |
901 | vdst1 = vec_perm(vdst1, (vector unsigned char)vB, vblue1); |
902 | vdst1 = vec_perm(vdst1, (vector unsigned char)vG, vgreen1); |
903 | vdst2 = (vector unsigned char)vec_perm((vector unsigned char)vR, (vector unsigned char)vR, vredalpha2); |
904 | vdst2 = vec_perm(vdst2, (vector unsigned char)vB, vblue2); |
905 | vdst2 = vec_perm(vdst2, (vector unsigned char)vG, vgreen2); |
906 | |
907 | /* Alpha blend 8 pixels as ARGB */ |
908 | valpha = vec_perm(vsrc1, v0, valphaPermute); |
909 | VEC_MULTIPLY_ALPHA(vsrc1, vdst1, valpha, mergePermute, v1_16, v8_16); |
910 | valpha = vec_perm(vsrc2, v0, valphaPermute); |
911 | VEC_MULTIPLY_ALPHA(vsrc2, vdst2, valpha, mergePermute, v1_16, v8_16); |
912 | |
913 | /* Convert 8 pixels to 565 */ |
914 | vpixel = (vector unsigned short)vec_packpx((vector unsigned int)vdst1, (vector unsigned int)vdst2); |
915 | vgpixel = (vector unsigned short)vec_perm(vdst1, vdst2, vgmerge); |
916 | vgpixel = vec_and(vgpixel, vfc); |
917 | vgpixel = vec_sl(vgpixel, v3_16); |
918 | vrpixel = vec_sl(vpixel, v1_16); |
919 | vrpixel = vec_and(vrpixel, vf800); |
920 | vbpixel = vec_and(vpixel, v3f); |
921 | vdst1 = vec_or((vector unsigned char)vrpixel, (vector unsigned char)vgpixel); |
922 | vdst1 = vec_or(vdst1, (vector unsigned char)vbpixel); |
923 | |
924 | /* Store 8 pixels */ |
925 | vec_st(vdst1, 0, dst); |
926 | |
927 | width -= 8; |
928 | dst += 16; |
929 | } |
930 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
931 | #undef ONE_PIXEL_BLEND |
932 | src += srcskip; |
933 | dst += dstskip; |
934 | } |
935 | } |
936 | |
937 | static void Blit32to32SurfaceAlphaKeyAltivec(SDL_BlitInfo *info) |
938 | { |
939 | unsigned alpha = info->src->alpha; |
940 | int height = info->d_height; |
941 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
942 | int srcskip = info->s_skip >> 2; |
943 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
944 | int dstskip = info->d_skip >> 2; |
945 | SDL_PixelFormat *srcfmt = info->src; |
946 | SDL_PixelFormat *dstfmt = info->dst; |
947 | unsigned sA = srcfmt->alpha; |
948 | unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
949 | Uint32 rgbmask = srcfmt->Rmask | srcfmt->Gmask | srcfmt->Bmask; |
950 | Uint32 ckey = info->src->colorkey; |
951 | vector unsigned char mergePermute; |
952 | vector unsigned char vsrcPermute; |
953 | vector unsigned char vdstPermute; |
954 | vector unsigned char vsdstPermute; |
955 | vector unsigned char valpha; |
956 | vector unsigned char valphamask; |
957 | vector unsigned char vbits; |
958 | vector unsigned char v0; |
959 | vector unsigned short v1; |
960 | vector unsigned short v8; |
961 | vector unsigned int vckey; |
962 | vector unsigned int vrgbmask; |
963 | |
964 | mergePermute = VEC_MERGE_PERMUTE(); |
965 | v0 = vec_splat_u8(0); |
966 | v1 = vec_splat_u16(1); |
967 | v8 = vec_splat_u16(8); |
968 | |
969 | /* set the alpha to 255 on the destination surf */ |
970 | valphamask = VEC_ALPHA_MASK(); |
971 | |
972 | vsrcPermute = calc_swizzle32(srcfmt, NULL); |
973 | vdstPermute = calc_swizzle32(NULL, dstfmt); |
974 | vsdstPermute = calc_swizzle32(dstfmt, NULL); |
975 | |
976 | /* set a vector full of alpha and 255-alpha */ |
977 | ((unsigned char *)&valpha)[0] = alpha; |
978 | valpha = vec_splat(valpha, 0); |
979 | vbits = (vector unsigned char)vec_splat_s8(-1); |
980 | |
981 | ckey &= rgbmask; |
982 | ((unsigned int *)(char*)&vckey)[0] = ckey; |
983 | vckey = vec_splat(vckey, 0); |
984 | ((unsigned int *)(char*)&vrgbmask)[0] = rgbmask; |
985 | vrgbmask = vec_splat(vrgbmask, 0); |
986 | |
987 | while(height--) { |
988 | int width = info->d_width; |
989 | #define ONE_PIXEL_BLEND(condition, widthvar) \ |
990 | while (condition) { \ |
991 | Uint32 Pixel; \ |
992 | unsigned sR, sG, sB, dR, dG, dB; \ |
993 | RETRIEVE_RGB_PIXEL(((Uint8 *)srcp), 4, Pixel); \ |
994 | if(sA && Pixel != ckey) { \ |
995 | RGB_FROM_PIXEL(Pixel, srcfmt, sR, sG, sB); \ |
996 | DISEMBLE_RGB(((Uint8 *)dstp), 4, dstfmt, Pixel, dR, dG, dB); \ |
997 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
998 | ASSEMBLE_RGBA(((Uint8 *)dstp), 4, dstfmt, dR, dG, dB, dA); \ |
999 | } \ |
1000 | dstp++; \ |
1001 | srcp++; \ |
1002 | widthvar--; \ |
1003 | } |
1004 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
1005 | if (width > 0) { |
1006 | int extrawidth = (width % 4); |
1007 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
1008 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
1009 | width -= extrawidth; |
1010 | while (width) { |
1011 | vector unsigned char vsel; |
1012 | vector unsigned char voverflow; |
1013 | vector unsigned char vd; |
1014 | vector unsigned char vd_orig; |
1015 | |
1016 | /* s = *srcp */ |
1017 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
1018 | vs = vec_perm(vs, voverflow, valigner); |
1019 | |
1020 | /* vsel is set for items that match the key */ |
1021 | vsel = (vector unsigned char)vec_and((vector unsigned int)vs, vrgbmask); |
1022 | vsel = (vector unsigned char)vec_cmpeq((vector unsigned int)vsel, vckey); |
1023 | |
1024 | /* permute to source format */ |
1025 | vs = vec_perm(vs, valpha, vsrcPermute); |
1026 | |
1027 | /* d = *dstp */ |
1028 | vd = (vector unsigned char)vec_ld(0, dstp); |
1029 | vd_orig = vd = vec_perm(vd, v0, vsdstPermute); |
1030 | |
1031 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
1032 | |
1033 | /* set the alpha channel to full on */ |
1034 | vd = vec_or(vd, valphamask); |
1035 | |
1036 | /* mask out color key */ |
1037 | vd = vec_sel(vd, vd_orig, vsel); |
1038 | |
1039 | /* permute to dest format */ |
1040 | vd = vec_perm(vd, vbits, vdstPermute); |
1041 | |
1042 | /* *dstp = res */ |
1043 | vec_st((vector unsigned int)vd, 0, dstp); |
1044 | |
1045 | srcp += 4; |
1046 | dstp += 4; |
1047 | width -= 4; |
1048 | vs = voverflow; |
1049 | } |
1050 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
1051 | } |
1052 | #undef ONE_PIXEL_BLEND |
1053 | |
1054 | srcp += srcskip; |
1055 | dstp += dstskip; |
1056 | } |
1057 | } |
1058 | |
1059 | |
1060 | static void Blit32to32PixelAlphaAltivec(SDL_BlitInfo *info) |
1061 | { |
1062 | int width = info->d_width; |
1063 | int height = info->d_height; |
1064 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
1065 | int srcskip = info->s_skip >> 2; |
1066 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
1067 | int dstskip = info->d_skip >> 2; |
1068 | SDL_PixelFormat *srcfmt = info->src; |
1069 | SDL_PixelFormat *dstfmt = info->dst; |
1070 | vector unsigned char mergePermute; |
1071 | vector unsigned char valphaPermute; |
1072 | vector unsigned char vsrcPermute; |
1073 | vector unsigned char vdstPermute; |
1074 | vector unsigned char vsdstPermute; |
1075 | vector unsigned char valphamask; |
1076 | vector unsigned char vpixelmask; |
1077 | vector unsigned char v0; |
1078 | vector unsigned short v1; |
1079 | vector unsigned short v8; |
1080 | |
1081 | v0 = vec_splat_u8(0); |
1082 | v1 = vec_splat_u16(1); |
1083 | v8 = vec_splat_u16(8); |
1084 | mergePermute = VEC_MERGE_PERMUTE(); |
1085 | valphamask = VEC_ALPHA_MASK(); |
1086 | valphaPermute = vec_and(vec_lvsl(0, (int *)NULL), vec_splat_u8(0xC)); |
1087 | vpixelmask = vec_nor(valphamask, v0); |
1088 | vsrcPermute = calc_swizzle32(srcfmt, NULL); |
1089 | vdstPermute = calc_swizzle32(NULL, dstfmt); |
1090 | vsdstPermute = calc_swizzle32(dstfmt, NULL); |
1091 | |
1092 | while ( height-- ) { |
1093 | width = info->d_width; |
1094 | #define ONE_PIXEL_BLEND(condition, widthvar) while ((condition)) { \ |
1095 | Uint32 Pixel; \ |
1096 | unsigned sR, sG, sB, dR, dG, dB, sA, dA; \ |
1097 | DISEMBLE_RGBA((Uint8 *)srcp, 4, srcfmt, Pixel, sR, sG, sB, sA); \ |
1098 | if(sA) { \ |
1099 | DISEMBLE_RGBA((Uint8 *)dstp, 4, dstfmt, Pixel, dR, dG, dB, dA); \ |
1100 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
1101 | ASSEMBLE_RGBA((Uint8 *)dstp, 4, dstfmt, dR, dG, dB, dA); \ |
1102 | } \ |
1103 | ++srcp; \ |
1104 | ++dstp; \ |
1105 | widthvar--; \ |
1106 | } |
1107 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
1108 | if (width > 0) { |
1109 | /* vsrcPermute */ |
1110 | /* vdstPermute */ |
1111 | int extrawidth = (width % 4); |
1112 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
1113 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
1114 | width -= extrawidth; |
1115 | while (width) { |
1116 | vector unsigned char voverflow; |
1117 | vector unsigned char vd; |
1118 | vector unsigned char valpha; |
1119 | vector unsigned char vdstalpha; |
1120 | /* s = *srcp */ |
1121 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
1122 | vs = vec_perm(vs, voverflow, valigner); |
1123 | vs = vec_perm(vs, v0, vsrcPermute); |
1124 | |
1125 | valpha = vec_perm(vs, v0, valphaPermute); |
1126 | |
1127 | /* d = *dstp */ |
1128 | vd = (vector unsigned char)vec_ld(0, dstp); |
1129 | vd = vec_perm(vd, v0, vsdstPermute); |
1130 | vdstalpha = vec_and(vd, valphamask); |
1131 | |
1132 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
1133 | |
1134 | /* set the alpha to the dest alpha */ |
1135 | vd = vec_and(vd, vpixelmask); |
1136 | vd = vec_or(vd, vdstalpha); |
1137 | vd = vec_perm(vd, v0, vdstPermute); |
1138 | |
1139 | /* *dstp = res */ |
1140 | vec_st((vector unsigned int)vd, 0, dstp); |
1141 | |
1142 | srcp += 4; |
1143 | dstp += 4; |
1144 | width -= 4; |
1145 | vs = voverflow; |
1146 | |
1147 | } |
1148 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
1149 | } |
1150 | srcp += srcskip; |
1151 | dstp += dstskip; |
1152 | #undef ONE_PIXEL_BLEND |
1153 | } |
1154 | } |
1155 | |
1156 | /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
1157 | static void BlitRGBtoRGBPixelAlphaAltivec(SDL_BlitInfo *info) |
1158 | { |
1159 | int width = info->d_width; |
1160 | int height = info->d_height; |
1161 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
1162 | int srcskip = info->s_skip >> 2; |
1163 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
1164 | int dstskip = info->d_skip >> 2; |
1165 | vector unsigned char mergePermute; |
1166 | vector unsigned char valphaPermute; |
1167 | vector unsigned char valphamask; |
1168 | vector unsigned char vpixelmask; |
1169 | vector unsigned char v0; |
1170 | vector unsigned short v1; |
1171 | vector unsigned short v8; |
1172 | v0 = vec_splat_u8(0); |
1173 | v1 = vec_splat_u16(1); |
1174 | v8 = vec_splat_u16(8); |
1175 | mergePermute = VEC_MERGE_PERMUTE(); |
1176 | valphamask = VEC_ALPHA_MASK(); |
1177 | valphaPermute = vec_and(vec_lvsl(0, (int *)NULL), vec_splat_u8(0xC)); |
1178 | |
1179 | |
1180 | vpixelmask = vec_nor(valphamask, v0); |
1181 | while(height--) { |
1182 | width = info->d_width; |
1183 | #define ONE_PIXEL_BLEND(condition, widthvar) \ |
1184 | while ((condition)) { \ |
1185 | Uint32 dalpha; \ |
1186 | Uint32 d; \ |
1187 | Uint32 s1; \ |
1188 | Uint32 d1; \ |
1189 | Uint32 s = *srcp; \ |
1190 | Uint32 alpha = s >> 24; \ |
1191 | if(alpha) { \ |
1192 | if(alpha == SDL_ALPHA_OPAQUE) { \ |
1193 | *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); \ |
1194 | } else { \ |
1195 | d = *dstp; \ |
1196 | dalpha = d & 0xff000000; \ |
1197 | s1 = s & 0xff00ff; \ |
1198 | d1 = d & 0xff00ff; \ |
1199 | d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; \ |
1200 | s &= 0xff00; \ |
1201 | d &= 0xff00; \ |
1202 | d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ |
1203 | *dstp = d1 | d | dalpha; \ |
1204 | } \ |
1205 | } \ |
1206 | ++srcp; \ |
1207 | ++dstp; \ |
1208 | widthvar--; \ |
1209 | } |
1210 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
1211 | if (width > 0) { |
1212 | int extrawidth = (width % 4); |
1213 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
1214 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
1215 | width -= extrawidth; |
1216 | while (width) { |
1217 | vector unsigned char voverflow; |
1218 | vector unsigned char vd; |
1219 | vector unsigned char valpha; |
1220 | vector unsigned char vdstalpha; |
1221 | /* s = *srcp */ |
1222 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
1223 | vs = vec_perm(vs, voverflow, valigner); |
1224 | |
1225 | valpha = vec_perm(vs, v0, valphaPermute); |
1226 | |
1227 | /* d = *dstp */ |
1228 | vd = (vector unsigned char)vec_ld(0, dstp); |
1229 | vdstalpha = vec_and(vd, valphamask); |
1230 | |
1231 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
1232 | |
1233 | /* set the alpha to the dest alpha */ |
1234 | vd = vec_and(vd, vpixelmask); |
1235 | vd = vec_or(vd, vdstalpha); |
1236 | |
1237 | /* *dstp = res */ |
1238 | vec_st((vector unsigned int)vd, 0, dstp); |
1239 | |
1240 | srcp += 4; |
1241 | dstp += 4; |
1242 | width -= 4; |
1243 | vs = voverflow; |
1244 | } |
1245 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
1246 | } |
1247 | srcp += srcskip; |
1248 | dstp += dstskip; |
1249 | } |
1250 | #undef ONE_PIXEL_BLEND |
1251 | } |
1252 | |
1253 | static void Blit32to32SurfaceAlphaAltivec(SDL_BlitInfo *info) |
1254 | { |
1255 | /* XXX : 6 */ |
1256 | unsigned alpha = info->src->alpha; |
1257 | int height = info->d_height; |
1258 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
1259 | int srcskip = info->s_skip >> 2; |
1260 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
1261 | int dstskip = info->d_skip >> 2; |
1262 | SDL_PixelFormat *srcfmt = info->src; |
1263 | SDL_PixelFormat *dstfmt = info->dst; |
1264 | unsigned sA = srcfmt->alpha; |
1265 | unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
1266 | vector unsigned char mergePermute; |
1267 | vector unsigned char vsrcPermute; |
1268 | vector unsigned char vdstPermute; |
1269 | vector unsigned char vsdstPermute; |
1270 | vector unsigned char valpha; |
1271 | vector unsigned char valphamask; |
1272 | vector unsigned char vbits; |
1273 | vector unsigned short v1; |
1274 | vector unsigned short v8; |
1275 | |
1276 | mergePermute = VEC_MERGE_PERMUTE(); |
1277 | v1 = vec_splat_u16(1); |
1278 | v8 = vec_splat_u16(8); |
1279 | |
1280 | /* set the alpha to 255 on the destination surf */ |
1281 | valphamask = VEC_ALPHA_MASK(); |
1282 | |
1283 | vsrcPermute = calc_swizzle32(srcfmt, NULL); |
1284 | vdstPermute = calc_swizzle32(NULL, dstfmt); |
1285 | vsdstPermute = calc_swizzle32(dstfmt, NULL); |
1286 | |
1287 | /* set a vector full of alpha and 255-alpha */ |
1288 | ((unsigned char *)&valpha)[0] = alpha; |
1289 | valpha = vec_splat(valpha, 0); |
1290 | vbits = (vector unsigned char)vec_splat_s8(-1); |
1291 | |
1292 | while(height--) { |
1293 | int width = info->d_width; |
1294 | #define ONE_PIXEL_BLEND(condition, widthvar) while ((condition)) { \ |
1295 | Uint32 Pixel; \ |
1296 | unsigned sR, sG, sB, dR, dG, dB; \ |
1297 | DISEMBLE_RGB(((Uint8 *)srcp), 4, srcfmt, Pixel, sR, sG, sB); \ |
1298 | DISEMBLE_RGB(((Uint8 *)dstp), 4, dstfmt, Pixel, dR, dG, dB); \ |
1299 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); \ |
1300 | ASSEMBLE_RGBA(((Uint8 *)dstp), 4, dstfmt, dR, dG, dB, dA); \ |
1301 | ++srcp; \ |
1302 | ++dstp; \ |
1303 | widthvar--; \ |
1304 | } |
1305 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
1306 | if (width > 0) { |
1307 | int extrawidth = (width % 4); |
1308 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
1309 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
1310 | width -= extrawidth; |
1311 | while (width) { |
1312 | vector unsigned char voverflow; |
1313 | vector unsigned char vd; |
1314 | |
1315 | /* s = *srcp */ |
1316 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
1317 | vs = vec_perm(vs, voverflow, valigner); |
1318 | vs = vec_perm(vs, valpha, vsrcPermute); |
1319 | |
1320 | /* d = *dstp */ |
1321 | vd = (vector unsigned char)vec_ld(0, dstp); |
1322 | vd = vec_perm(vd, vd, vsdstPermute); |
1323 | |
1324 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
1325 | |
1326 | /* set the alpha channel to full on */ |
1327 | vd = vec_or(vd, valphamask); |
1328 | vd = vec_perm(vd, vbits, vdstPermute); |
1329 | |
1330 | /* *dstp = res */ |
1331 | vec_st((vector unsigned int)vd, 0, dstp); |
1332 | |
1333 | srcp += 4; |
1334 | dstp += 4; |
1335 | width -= 4; |
1336 | vs = voverflow; |
1337 | } |
1338 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
1339 | } |
1340 | #undef ONE_PIXEL_BLEND |
1341 | |
1342 | srcp += srcskip; |
1343 | dstp += dstskip; |
1344 | } |
1345 | |
1346 | } |
1347 | |
1348 | |
1349 | /* fast RGB888->(A)RGB888 blending */ |
1350 | static void BlitRGBtoRGBSurfaceAlphaAltivec(SDL_BlitInfo *info) |
1351 | { |
1352 | unsigned alpha = info->src->alpha; |
1353 | int height = info->d_height; |
1354 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
1355 | int srcskip = info->s_skip >> 2; |
1356 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
1357 | int dstskip = info->d_skip >> 2; |
1358 | vector unsigned char mergePermute; |
1359 | vector unsigned char valpha; |
1360 | vector unsigned char valphamask; |
1361 | vector unsigned short v1; |
1362 | vector unsigned short v8; |
1363 | |
1364 | mergePermute = VEC_MERGE_PERMUTE(); |
1365 | v1 = vec_splat_u16(1); |
1366 | v8 = vec_splat_u16(8); |
1367 | |
1368 | /* set the alpha to 255 on the destination surf */ |
1369 | valphamask = VEC_ALPHA_MASK(); |
1370 | |
1371 | /* set a vector full of alpha and 255-alpha */ |
1372 | ((unsigned char *)&valpha)[0] = alpha; |
1373 | valpha = vec_splat(valpha, 0); |
1374 | |
1375 | while(height--) { |
1376 | int width = info->d_width; |
1377 | #define ONE_PIXEL_BLEND(condition, widthvar) while ((condition)) { \ |
1378 | Uint32 s = *srcp; \ |
1379 | Uint32 d = *dstp; \ |
1380 | Uint32 s1 = s & 0xff00ff; \ |
1381 | Uint32 d1 = d & 0xff00ff; \ |
1382 | d1 = (d1 + ((s1 - d1) * alpha >> 8)) \ |
1383 | & 0xff00ff; \ |
1384 | s &= 0xff00; \ |
1385 | d &= 0xff00; \ |
1386 | d = (d + ((s - d) * alpha >> 8)) & 0xff00; \ |
1387 | *dstp = d1 | d | 0xff000000; \ |
1388 | ++srcp; \ |
1389 | ++dstp; \ |
1390 | widthvar--; \ |
1391 | } |
1392 | ONE_PIXEL_BLEND((UNALIGNED_PTR(dstp)) && (width), width); |
1393 | if (width > 0) { |
1394 | int extrawidth = (width % 4); |
1395 | vector unsigned char valigner = VEC_ALIGNER(srcp); |
1396 | vector unsigned char vs = (vector unsigned char)vec_ld(0, srcp); |
1397 | width -= extrawidth; |
1398 | while (width) { |
1399 | vector unsigned char voverflow; |
1400 | vector unsigned char vd; |
1401 | |
1402 | /* s = *srcp */ |
1403 | voverflow = (vector unsigned char)vec_ld(15, srcp); |
1404 | vs = vec_perm(vs, voverflow, valigner); |
1405 | |
1406 | /* d = *dstp */ |
1407 | vd = (vector unsigned char)vec_ld(0, dstp); |
1408 | |
1409 | VEC_MULTIPLY_ALPHA(vs, vd, valpha, mergePermute, v1, v8); |
1410 | |
1411 | /* set the alpha channel to full on */ |
1412 | vd = vec_or(vd, valphamask); |
1413 | |
1414 | /* *dstp = res */ |
1415 | vec_st((vector unsigned int)vd, 0, dstp); |
1416 | |
1417 | srcp += 4; |
1418 | dstp += 4; |
1419 | width -= 4; |
1420 | vs = voverflow; |
1421 | } |
1422 | ONE_PIXEL_BLEND((extrawidth), extrawidth); |
1423 | } |
1424 | #undef ONE_PIXEL_BLEND |
1425 | |
1426 | srcp += srcskip; |
1427 | dstp += dstskip; |
1428 | } |
1429 | } |
1430 | #if __MWERKS__ |
1431 | #pragma altivec_model off |
1432 | #endif |
1433 | #endif /* SDL_ALTIVEC_BLITTERS */ |
1434 | |
1435 | /* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */ |
1436 | static void BlitRGBtoRGBSurfaceAlpha128(SDL_BlitInfo *info) |
1437 | { |
1438 | int width = info->d_width; |
1439 | int height = info->d_height; |
1440 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
1441 | int srcskip = info->s_skip >> 2; |
1442 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
1443 | int dstskip = info->d_skip >> 2; |
1444 | |
1445 | while(height--) { |
1446 | DUFFS_LOOP4({ |
1447 | Uint32 s = *srcp++; |
1448 | Uint32 d = *dstp; |
1449 | *dstp++ = ((((s & 0x00fefefe) + (d & 0x00fefefe)) >> 1) |
1450 | + (s & d & 0x00010101)) | 0xff000000; |
1451 | }, width); |
1452 | srcp += srcskip; |
1453 | dstp += dstskip; |
1454 | } |
1455 | } |
1456 | |
1457 | /* fast RGB888->(A)RGB888 blending with surface alpha */ |
1458 | static void BlitRGBtoRGBSurfaceAlpha(SDL_BlitInfo *info) |
1459 | { |
1460 | unsigned alpha = info->src->alpha; |
1461 | if(alpha == 128) { |
1462 | BlitRGBtoRGBSurfaceAlpha128(info); |
1463 | } else { |
1464 | int width = info->d_width; |
1465 | int height = info->d_height; |
1466 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
1467 | int srcskip = info->s_skip >> 2; |
1468 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
1469 | int dstskip = info->d_skip >> 2; |
1470 | Uint32 s; |
1471 | Uint32 d; |
1472 | Uint32 s1; |
1473 | Uint32 d1; |
1474 | |
1475 | while(height--) { |
1476 | DUFFS_LOOP_DOUBLE2({ |
1477 | /* One Pixel Blend */ |
1478 | s = *srcp; |
1479 | d = *dstp; |
1480 | s1 = s & 0xff00ff; |
1481 | d1 = d & 0xff00ff; |
1482 | d1 = (d1 + ((s1 - d1) * alpha >> 8)) |
1483 | & 0xff00ff; |
1484 | s &= 0xff00; |
1485 | d &= 0xff00; |
1486 | d = (d + ((s - d) * alpha >> 8)) & 0xff00; |
1487 | *dstp = d1 | d | 0xff000000; |
1488 | ++srcp; |
1489 | ++dstp; |
1490 | },{ |
1491 | /* Two Pixels Blend */ |
1492 | s = *srcp; |
1493 | d = *dstp; |
1494 | s1 = s & 0xff00ff; |
1495 | d1 = d & 0xff00ff; |
1496 | d1 += (s1 - d1) * alpha >> 8; |
1497 | d1 &= 0xff00ff; |
1498 | |
1499 | s = ((s & 0xff00) >> 8) | |
1500 | ((srcp[1] & 0xff00) << 8); |
1501 | d = ((d & 0xff00) >> 8) | |
1502 | ((dstp[1] & 0xff00) << 8); |
1503 | d += (s - d) * alpha >> 8; |
1504 | d &= 0x00ff00ff; |
1505 | |
1506 | *dstp++ = d1 | ((d << 8) & 0xff00) | 0xff000000; |
1507 | ++srcp; |
1508 | |
1509 | s1 = *srcp; |
1510 | d1 = *dstp; |
1511 | s1 &= 0xff00ff; |
1512 | d1 &= 0xff00ff; |
1513 | d1 += (s1 - d1) * alpha >> 8; |
1514 | d1 &= 0xff00ff; |
1515 | |
1516 | *dstp = d1 | ((d >> 8) & 0xff00) | 0xff000000; |
1517 | ++srcp; |
1518 | ++dstp; |
1519 | }, width); |
1520 | srcp += srcskip; |
1521 | dstp += dstskip; |
1522 | } |
1523 | } |
1524 | } |
1525 | |
1526 | /* fast ARGB888->(A)RGB888 blending with pixel alpha */ |
1527 | static void BlitRGBtoRGBPixelAlpha(SDL_BlitInfo *info) |
1528 | { |
1529 | int width = info->d_width; |
1530 | int height = info->d_height; |
1531 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
1532 | int srcskip = info->s_skip >> 2; |
1533 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
1534 | int dstskip = info->d_skip >> 2; |
1535 | |
1536 | while(height--) { |
1537 | DUFFS_LOOP4({ |
1538 | Uint32 dalpha; |
1539 | Uint32 d; |
1540 | Uint32 s1; |
1541 | Uint32 d1; |
1542 | Uint32 s = *srcp; |
1543 | Uint32 alpha = s >> 24; |
1544 | /* FIXME: Here we special-case opaque alpha since the |
1545 | compositioning used (>>8 instead of /255) doesn't handle |
1546 | it correctly. Also special-case alpha=0 for speed? |
1547 | Benchmark this! */ |
1548 | if(alpha) { |
1549 | if(alpha == SDL_ALPHA_OPAQUE) { |
1550 | *dstp = (s & 0x00ffffff) | (*dstp & 0xff000000); |
1551 | } else { |
1552 | /* |
1553 | * take out the middle component (green), and process |
1554 | * the other two in parallel. One multiply less. |
1555 | */ |
1556 | d = *dstp; |
1557 | dalpha = d & 0xff000000; |
1558 | s1 = s & 0xff00ff; |
1559 | d1 = d & 0xff00ff; |
1560 | d1 = (d1 + ((s1 - d1) * alpha >> 8)) & 0xff00ff; |
1561 | s &= 0xff00; |
1562 | d &= 0xff00; |
1563 | d = (d + ((s - d) * alpha >> 8)) & 0xff00; |
1564 | *dstp = d1 | d | dalpha; |
1565 | } |
1566 | } |
1567 | ++srcp; |
1568 | ++dstp; |
1569 | }, width); |
1570 | srcp += srcskip; |
1571 | dstp += dstskip; |
1572 | } |
1573 | } |
1574 | |
1575 | #if GCC_ASMBLIT |
1576 | /* fast (as in MMX with prefetch) ARGB888->(A)RGB888 blending with pixel alpha */ |
1577 | static void BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo *info) |
1578 | { |
1579 | int width = info->d_width; |
1580 | int height = info->d_height; |
1581 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
1582 | int srcskip = info->s_skip >> 2; |
1583 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
1584 | int dstskip = info->d_skip >> 2; |
1585 | SDL_PixelFormat* sf = info->src; |
1586 | Uint32 amask = sf->Amask; |
1587 | |
1588 | __asm__ ( |
1589 | /* make mm6 all zeros. */ |
1590 | "pxor %%mm6, %%mm6\n" |
1591 | |
1592 | /* Make a mask to preserve the alpha. */ |
1593 | "movd %0, %%mm7\n\t" /* 0000F000 -> mm7 */ |
1594 | "punpcklbw %%mm7, %%mm7\n\t" /* FF000000 -> mm7 */ |
1595 | "pcmpeqb %%mm4, %%mm4\n\t" /* FFFFFFFF -> mm4 */ |
1596 | "movq %%mm4, %%mm3\n\t" /* FFFFFFFF -> mm3 (for later) */ |
1597 | "pxor %%mm4, %%mm7\n\t" /* 00FFFFFF -> mm7 (mult mask) */ |
1598 | |
1599 | /* form channel masks */ |
1600 | "movq %%mm7, %%mm4\n\t" /* 00FFFFFF -> mm4 */ |
1601 | "packsswb %%mm6, %%mm4\n\t" /* 00000FFF -> mm4 (channel mask) */ |
1602 | "packsswb %%mm6, %%mm3\n\t" /* 0000FFFF -> mm3 */ |
1603 | "pxor %%mm4, %%mm3\n\t" /* 0000F000 -> mm3 (~channel mask) */ |
1604 | |
1605 | /* get alpha channel shift */ |
1606 | "movd %1, %%mm5\n\t" /* Ashift -> mm5 */ |
1607 | |
1608 | : /* nothing */ : "rm" (amask), "rm" ((Uint32) sf->Ashift) ); |
1609 | |
1610 | while(height--) { |
1611 | |
1612 | DUFFS_LOOP4({ |
1613 | Uint32 alpha; |
1614 | |
1615 | __asm__ ( |
1616 | "prefetch 64(%0)\n" |
1617 | "prefetch 64(%1)\n" |
1618 | : : "r" (srcp), "r" (dstp) ); |
1619 | |
1620 | alpha = *srcp & amask; |
1621 | /* FIXME: Here we special-case opaque alpha since the |
1622 | compositioning used (>>8 instead of /255) doesn't handle |
1623 | it correctly. Also special-case alpha=0 for speed? |
1624 | Benchmark this! */ |
1625 | if(alpha == 0) { |
1626 | /* do nothing */ |
1627 | } |
1628 | else if(alpha == amask) { |
1629 | /* opaque alpha -- copy RGB, keep dst alpha */ |
1630 | /* using MMX here to free up regular registers for other things */ |
1631 | __asm__ ( |
1632 | "movd (%0), %%mm0\n\t" /* src(ARGB) -> mm0 (0000ARGB)*/ |
1633 | "movd (%1), %%mm1\n\t" /* dst(ARGB) -> mm1 (0000ARGB)*/ |
1634 | "pand %%mm4, %%mm0\n\t" /* src & chanmask -> mm0 */ |
1635 | "pand %%mm3, %%mm1\n\t" /* dst & ~chanmask -> mm2 */ |
1636 | "por %%mm0, %%mm1\n\t" /* src | dst -> mm1 */ |
1637 | "movd %%mm1, (%1) \n\t" /* mm1 -> dst */ |
1638 | |
1639 | : : "r" (srcp), "r" (dstp) ); |
1640 | } |
1641 | |
1642 | else { |
1643 | __asm__ ( |
1644 | /* load in the source, and dst. */ |
1645 | "movd (%0), %%mm0\n" /* mm0(s) = 0 0 0 0 | As Rs Gs Bs */ |
1646 | "movd (%1), %%mm1\n" /* mm1(d) = 0 0 0 0 | Ad Rd Gd Bd */ |
1647 | |
1648 | /* Move the src alpha into mm2 */ |
1649 | |
1650 | /* if supporting pshufw */ |
1651 | /*"pshufw $0x55, %%mm0, %%mm2\n" */ /* mm2 = 0 As 0 As | 0 As 0 As */ |
1652 | /*"psrlw $8, %%mm2\n" */ |
1653 | |
1654 | /* else: */ |
1655 | "movd %2, %%mm2\n" |
1656 | "psrld %%mm5, %%mm2\n" /* mm2 = 0 0 0 0 | 0 0 0 As */ |
1657 | "punpcklwd %%mm2, %%mm2\n" /* mm2 = 0 0 0 0 | 0 As 0 As */ |
1658 | "punpckldq %%mm2, %%mm2\n" /* mm2 = 0 As 0 As | 0 As 0 As */ |
1659 | "pand %%mm7, %%mm2\n" /* to preserve dest alpha */ |
1660 | |
1661 | /* move the colors into words. */ |
1662 | "punpcklbw %%mm6, %%mm0\n" /* mm0 = 0 As 0 Rs | 0 Gs 0 Bs */ |
1663 | "punpcklbw %%mm6, %%mm1\n" /* mm0 = 0 Ad 0 Rd | 0 Gd 0 Bd */ |
1664 | |
1665 | /* src - dst */ |
1666 | "psubw %%mm1, %%mm0\n" /* mm0 = As-Ad Rs-Rd | Gs-Gd Bs-Bd */ |
1667 | |
1668 | /* A * (src-dst) */ |
1669 | "pmullw %%mm2, %%mm0\n" /* mm0 = 0*As-d As*Rs-d | As*Gs-d As*Bs-d */ |
1670 | "psrlw $8, %%mm0\n" /* mm0 = 0>>8 Rc>>8 | Gc>>8 Bc>>8 */ |
1671 | "paddb %%mm1, %%mm0\n" /* mm0 = 0+Ad Rc+Rd | Gc+Gd Bc+Bd */ |
1672 | |
1673 | "packuswb %%mm0, %%mm0\n" /* mm0 = | Ac Rc Gc Bc */ |
1674 | |
1675 | "movd %%mm0, (%1)\n" /* result in mm0 */ |
1676 | |
1677 | : : "r" (srcp), "r" (dstp), "r" (alpha) ); |
1678 | |
1679 | } |
1680 | ++srcp; |
1681 | ++dstp; |
1682 | }, width); |
1683 | srcp += srcskip; |
1684 | dstp += dstskip; |
1685 | } |
1686 | |
1687 | __asm__ ( |
1688 | "emms\n" |
1689 | : ); |
1690 | } |
1691 | /* End GCC_ASMBLIT*/ |
1692 | |
1693 | #elif MSVC_ASMBLIT |
1694 | /* fast (as in MMX with prefetch) ARGB888->(A)RGB888 blending with pixel alpha */ |
1695 | static void BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo *info) |
1696 | { |
1697 | int width = info->d_width; |
1698 | int height = info->d_height; |
1699 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
1700 | int srcskip = info->s_skip >> 2; |
1701 | Uint32 *dstp = (Uint32 *)info->d_pixels; |
1702 | int dstskip = info->d_skip >> 2; |
1703 | SDL_PixelFormat* sf = info->src; |
1704 | Uint32 chanmask = sf->Rmask | sf->Gmask | sf->Bmask; |
1705 | Uint32 amask = sf->Amask; |
1706 | Uint32 ashift = sf->Ashift; |
1707 | Uint64 multmask; |
1708 | |
1709 | __m64 src1, dst1, mm_alpha, mm_zero, dmask; |
1710 | |
1711 | mm_zero = _mm_setzero_si64(); /* 0 -> mm_zero */ |
1712 | multmask = ~(0xFFFFi64 << (ashift * 2)); |
1713 | dmask = *(__m64*) &multmask; /* dst alpha mask -> dmask */ |
1714 | |
1715 | while(height--) { |
1716 | DUFFS_LOOP4({ |
1717 | Uint32 alpha; |
1718 | |
1719 | _m_prefetch(srcp + 16); |
1720 | _m_prefetch(dstp + 16); |
1721 | |
1722 | alpha = *srcp & amask; |
1723 | if (alpha == 0) { |
1724 | /* do nothing */ |
1725 | } else if (alpha == amask) { |
1726 | /* copy RGB, keep dst alpha */ |
1727 | *dstp = (*srcp & chanmask) | (*dstp & ~chanmask); |
1728 | } else { |
1729 | src1 = _mm_cvtsi32_si64(*srcp); /* src(ARGB) -> src1 (0000ARGB)*/ |
1730 | src1 = _mm_unpacklo_pi8(src1, mm_zero); /* 0A0R0G0B -> src1 */ |
1731 | |
1732 | dst1 = _mm_cvtsi32_si64(*dstp); /* dst(ARGB) -> dst1 (0000ARGB)*/ |
1733 | dst1 = _mm_unpacklo_pi8(dst1, mm_zero); /* 0A0R0G0B -> dst1 */ |
1734 | |
1735 | mm_alpha = _mm_cvtsi32_si64(alpha); /* alpha -> mm_alpha (0000000A) */ |
1736 | mm_alpha = _mm_srli_si64(mm_alpha, ashift); /* mm_alpha >> ashift -> mm_alpha(0000000A) */ |
1737 | mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
1738 | mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
1739 | mm_alpha = _mm_and_si64(mm_alpha, dmask); /* 000A0A0A -> mm_alpha, preserve dst alpha on add */ |
1740 | |
1741 | /* blend */ |
1742 | src1 = _mm_sub_pi16(src1, dst1);/* src - dst -> src1 */ |
1743 | src1 = _mm_mullo_pi16(src1, mm_alpha); /* (src - dst) * alpha -> src1 */ |
1744 | src1 = _mm_srli_pi16(src1, 8); /* src1 >> 8 -> src1(000R0G0B) */ |
1745 | dst1 = _mm_add_pi8(src1, dst1); /* src1 + dst1(dst) -> dst1(0A0R0G0B) */ |
1746 | dst1 = _mm_packs_pu16(dst1, mm_zero); /* 0000ARGB -> dst1 */ |
1747 | |
1748 | *dstp = _mm_cvtsi64_si32(dst1); /* dst1 -> pixel */ |
1749 | } |
1750 | ++srcp; |
1751 | ++dstp; |
1752 | }, width); |
1753 | srcp += srcskip; |
1754 | dstp += dstskip; |
1755 | } |
1756 | _mm_empty(); |
1757 | } |
1758 | /* End MSVC_ASMBLIT */ |
1759 | |
1760 | #endif /* GCC_ASMBLIT, MSVC_ASMBLIT */ |
1761 | |
1762 | /* 16bpp special case for per-surface alpha=50%: blend 2 pixels in parallel */ |
1763 | |
1764 | /* blend a single 16 bit pixel at 50% */ |
1765 | #define BLEND16_50(d, s, mask) \ |
1766 | ((((s & mask) + (d & mask)) >> 1) + (s & d & (~mask & 0xffff))) |
1767 | |
1768 | /* blend two 16 bit pixels at 50% */ |
1769 | #define BLEND2x16_50(d, s, mask) \ |
1770 | (((s & (mask | mask << 16)) >> 1) + ((d & (mask | mask << 16)) >> 1) \ |
1771 | + (s & d & (~(mask | mask << 16)))) |
1772 | |
1773 | static void Blit16to16SurfaceAlpha128(SDL_BlitInfo *info, Uint16 mask) |
1774 | { |
1775 | int width = info->d_width; |
1776 | int height = info->d_height; |
1777 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
1778 | int srcskip = info->s_skip >> 1; |
1779 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
1780 | int dstskip = info->d_skip >> 1; |
1781 | |
1782 | while(height--) { |
1783 | if(((uintptr_t)srcp ^ (uintptr_t)dstp) & 2) { |
1784 | /* |
1785 | * Source and destination not aligned, pipeline it. |
1786 | * This is mostly a win for big blits but no loss for |
1787 | * small ones |
1788 | */ |
1789 | Uint32 prev_sw; |
1790 | int w = width; |
1791 | |
1792 | /* handle odd destination */ |
1793 | if((uintptr_t)dstp & 2) { |
1794 | Uint16 d = *dstp, s = *srcp; |
1795 | *dstp = BLEND16_50(d, s, mask); |
1796 | dstp++; |
1797 | srcp++; |
1798 | w--; |
1799 | } |
1800 | srcp++; /* srcp is now 32-bit aligned */ |
1801 | |
1802 | /* bootstrap pipeline with first halfword */ |
1803 | prev_sw = ((Uint32 *)srcp)[-1]; |
1804 | |
1805 | while(w > 1) { |
1806 | Uint32 sw, dw, s; |
1807 | sw = *(Uint32 *)srcp; |
1808 | dw = *(Uint32 *)dstp; |
1809 | #if SDL_BYTEORDER == SDL_BIG_ENDIAN |
1810 | s = (prev_sw << 16) + (sw >> 16); |
1811 | #else |
1812 | s = (prev_sw >> 16) + (sw << 16); |
1813 | #endif |
1814 | prev_sw = sw; |
1815 | *(Uint32 *)dstp = BLEND2x16_50(dw, s, mask); |
1816 | dstp += 2; |
1817 | srcp += 2; |
1818 | w -= 2; |
1819 | } |
1820 | |
1821 | /* final pixel if any */ |
1822 | if(w) { |
1823 | Uint16 d = *dstp, s; |
1824 | #if SDL_BYTEORDER == SDL_BIG_ENDIAN |
1825 | s = (Uint16)prev_sw; |
1826 | #else |
1827 | s = (Uint16)(prev_sw >> 16); |
1828 | #endif |
1829 | *dstp = BLEND16_50(d, s, mask); |
1830 | srcp++; |
1831 | dstp++; |
1832 | } |
1833 | srcp += srcskip - 1; |
1834 | dstp += dstskip; |
1835 | } else { |
1836 | /* source and destination are aligned */ |
1837 | int w = width; |
1838 | |
1839 | /* first odd pixel? */ |
1840 | if((uintptr_t)srcp & 2) { |
1841 | Uint16 d = *dstp, s = *srcp; |
1842 | *dstp = BLEND16_50(d, s, mask); |
1843 | srcp++; |
1844 | dstp++; |
1845 | w--; |
1846 | } |
1847 | /* srcp and dstp are now 32-bit aligned */ |
1848 | |
1849 | while(w > 1) { |
1850 | Uint32 sw = *(Uint32 *)srcp; |
1851 | Uint32 dw = *(Uint32 *)dstp; |
1852 | *(Uint32 *)dstp = BLEND2x16_50(dw, sw, mask); |
1853 | srcp += 2; |
1854 | dstp += 2; |
1855 | w -= 2; |
1856 | } |
1857 | |
1858 | /* last odd pixel? */ |
1859 | if(w) { |
1860 | Uint16 d = *dstp, s = *srcp; |
1861 | *dstp = BLEND16_50(d, s, mask); |
1862 | srcp++; |
1863 | dstp++; |
1864 | } |
1865 | srcp += srcskip; |
1866 | dstp += dstskip; |
1867 | } |
1868 | } |
1869 | } |
1870 | |
1871 | #if GCC_ASMBLIT |
1872 | /* fast RGB565->RGB565 blending with surface alpha */ |
1873 | static void Blit565to565SurfaceAlphaMMX(SDL_BlitInfo *info) |
1874 | { |
1875 | unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
1876 | if(alpha == 128) { |
1877 | Blit16to16SurfaceAlpha128(info, 0xf7de); |
1878 | } else { |
1879 | int width = info->d_width; |
1880 | int height = info->d_height; |
1881 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
1882 | int srcskip = info->s_skip >> 1; |
1883 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
1884 | int dstskip = info->d_skip >> 1; |
1885 | Uint32 s, d; |
1886 | Uint64 load; |
1887 | |
1888 | alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
1889 | load = alpha; |
1890 | alpha >>= 3; /* downscale alpha to 5 bits */ |
1891 | |
1892 | movq_m2r(load, mm0); /* alpha(0000000A) -> mm0 */ |
1893 | punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */ |
1894 | punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */ |
1895 | /* position alpha to allow for mullo and mulhi on diff channels |
1896 | to reduce the number of operations */ |
1897 | psllq_i2r(3, mm0); |
1898 | |
1899 | /* Setup the 565 color channel masks */ |
1900 | load = 0x07E007E007E007E0ULL; |
1901 | movq_m2r(load, mm4); /* MASKGREEN -> mm4 */ |
1902 | load = 0x001F001F001F001FULL; |
1903 | movq_m2r(load, mm7); /* MASKBLUE -> mm7 */ |
1904 | while(height--) { |
1905 | DUFFS_LOOP_QUATRO2( |
1906 | { |
1907 | s = *srcp++; |
1908 | d = *dstp; |
1909 | /* |
1910 | * shift out the middle component (green) to |
1911 | * the high 16 bits, and process all three RGB |
1912 | * components at the same time. |
1913 | */ |
1914 | s = (s | s << 16) & 0x07e0f81f; |
1915 | d = (d | d << 16) & 0x07e0f81f; |
1916 | d += (s - d) * alpha >> 5; |
1917 | d &= 0x07e0f81f; |
1918 | *dstp++ = d | d >> 16; |
1919 | },{ |
1920 | s = *srcp++; |
1921 | d = *dstp; |
1922 | /* |
1923 | * shift out the middle component (green) to |
1924 | * the high 16 bits, and process all three RGB |
1925 | * components at the same time. |
1926 | */ |
1927 | s = (s | s << 16) & 0x07e0f81f; |
1928 | d = (d | d << 16) & 0x07e0f81f; |
1929 | d += (s - d) * alpha >> 5; |
1930 | d &= 0x07e0f81f; |
1931 | *dstp++ = d | d >> 16; |
1932 | s = *srcp++; |
1933 | d = *dstp; |
1934 | /* |
1935 | * shift out the middle component (green) to |
1936 | * the high 16 bits, and process all three RGB |
1937 | * components at the same time. |
1938 | */ |
1939 | s = (s | s << 16) & 0x07e0f81f; |
1940 | d = (d | d << 16) & 0x07e0f81f; |
1941 | d += (s - d) * alpha >> 5; |
1942 | d &= 0x07e0f81f; |
1943 | *dstp++ = d | d >> 16; |
1944 | },{ |
1945 | movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */ |
1946 | movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */ |
1947 | |
1948 | /* red -- does not need a mask since the right shift clears |
1949 | the uninteresting bits */ |
1950 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
1951 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
1952 | psrlw_i2r(11, mm5); /* mm5 >> 11 -> mm5 [000r 000r 000r 000r] */ |
1953 | psrlw_i2r(11, mm6); /* mm6 >> 11 -> mm6 [000r 000r 000r 000r] */ |
1954 | |
1955 | /* blend */ |
1956 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
1957 | pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
1958 | /* alpha used is actually 11 bits |
1959 | 11 + 5 = 16 bits, so the sign bits are lost */ |
1960 | psrlw_i2r(11, mm5); /* mm5 >> 11 -> mm5 */ |
1961 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
1962 | psllw_i2r(11, mm6); /* mm6 << 11 -> mm6 */ |
1963 | |
1964 | movq_r2r(mm6, mm1); /* save new reds in dsts */ |
1965 | |
1966 | /* green -- process the bits in place */ |
1967 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
1968 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
1969 | pand_r2r(mm4, mm5); /* src & MASKGREEN -> mm5 */ |
1970 | pand_r2r(mm4, mm6); /* dst & MASKGREEN -> mm6 */ |
1971 | |
1972 | /* blend */ |
1973 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
1974 | pmulhw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
1975 | /* 11 + 11 - 16 = 6 bits, so all the lower uninteresting |
1976 | bits are gone and the sign bits present */ |
1977 | psllw_i2r(5, mm5); /* mm5 << 5 -> mm5 */ |
1978 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
1979 | |
1980 | por_r2r(mm6, mm1); /* save new greens in dsts */ |
1981 | |
1982 | /* blue */ |
1983 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
1984 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
1985 | pand_r2r(mm7, mm5); /* src & MASKBLUE -> mm5[000b 000b 000b 000b] */ |
1986 | pand_r2r(mm7, mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
1987 | |
1988 | /* blend */ |
1989 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
1990 | pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
1991 | /* 11 + 5 = 16 bits, so the sign bits are lost and |
1992 | the interesting bits will need to be MASKed */ |
1993 | psrlw_i2r(11, mm5); /* mm5 >> 11 -> mm5 */ |
1994 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
1995 | pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
1996 | |
1997 | por_r2r(mm6, mm1); /* save new blues in dsts */ |
1998 | |
1999 | movq_r2m(mm1, *dstp); /* mm1 -> 4 dst pixels */ |
2000 | |
2001 | srcp += 4; |
2002 | dstp += 4; |
2003 | }, width); |
2004 | srcp += srcskip; |
2005 | dstp += dstskip; |
2006 | } |
2007 | emms(); |
2008 | } |
2009 | } |
2010 | |
2011 | /* fast RGB555->RGB555 blending with surface alpha */ |
2012 | static void Blit555to555SurfaceAlphaMMX(SDL_BlitInfo *info) |
2013 | { |
2014 | unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
2015 | if(alpha == 128) { |
2016 | Blit16to16SurfaceAlpha128(info, 0xfbde); |
2017 | } else { |
2018 | int width = info->d_width; |
2019 | int height = info->d_height; |
2020 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
2021 | int srcskip = info->s_skip >> 1; |
2022 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
2023 | int dstskip = info->d_skip >> 1; |
2024 | Uint32 s, d; |
2025 | Uint64 load; |
2026 | |
2027 | alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
2028 | load = alpha; |
2029 | alpha >>= 3; /* downscale alpha to 5 bits */ |
2030 | |
2031 | movq_m2r(load, mm0); /* alpha(0000000A) -> mm0 */ |
2032 | punpcklwd_r2r(mm0, mm0); /* 00000A0A -> mm0 */ |
2033 | punpcklwd_r2r(mm0, mm0); /* 0A0A0A0A -> mm0 */ |
2034 | /* position alpha to allow for mullo and mulhi on diff channels |
2035 | to reduce the number of operations */ |
2036 | psllq_i2r(3, mm0); |
2037 | |
2038 | /* Setup the 555 color channel masks */ |
2039 | load = 0x03E003E003E003E0ULL; |
2040 | movq_m2r(load, mm4); /* MASKGREEN -> mm4 */ |
2041 | load = 0x001F001F001F001FULL; |
2042 | movq_m2r(load, mm7); /* MASKBLUE -> mm7 */ |
2043 | while(height--) { |
2044 | DUFFS_LOOP_QUATRO2( |
2045 | { |
2046 | s = *srcp++; |
2047 | d = *dstp; |
2048 | /* |
2049 | * shift out the middle component (green) to |
2050 | * the high 16 bits, and process all three RGB |
2051 | * components at the same time. |
2052 | */ |
2053 | s = (s | s << 16) & 0x03e07c1f; |
2054 | d = (d | d << 16) & 0x03e07c1f; |
2055 | d += (s - d) * alpha >> 5; |
2056 | d &= 0x03e07c1f; |
2057 | *dstp++ = d | d >> 16; |
2058 | },{ |
2059 | s = *srcp++; |
2060 | d = *dstp; |
2061 | /* |
2062 | * shift out the middle component (green) to |
2063 | * the high 16 bits, and process all three RGB |
2064 | * components at the same time. |
2065 | */ |
2066 | s = (s | s << 16) & 0x03e07c1f; |
2067 | d = (d | d << 16) & 0x03e07c1f; |
2068 | d += (s - d) * alpha >> 5; |
2069 | d &= 0x03e07c1f; |
2070 | *dstp++ = d | d >> 16; |
2071 | s = *srcp++; |
2072 | d = *dstp; |
2073 | /* |
2074 | * shift out the middle component (green) to |
2075 | * the high 16 bits, and process all three RGB |
2076 | * components at the same time. |
2077 | */ |
2078 | s = (s | s << 16) & 0x03e07c1f; |
2079 | d = (d | d << 16) & 0x03e07c1f; |
2080 | d += (s - d) * alpha >> 5; |
2081 | d &= 0x03e07c1f; |
2082 | *dstp++ = d | d >> 16; |
2083 | },{ |
2084 | movq_m2r((*srcp), mm2);/* 4 src pixels -> mm2 */ |
2085 | movq_m2r((*dstp), mm3);/* 4 dst pixels -> mm3 */ |
2086 | |
2087 | /* red -- process the bits in place */ |
2088 | psllq_i2r(5, mm4); /* turn MASKGREEN into MASKRED */ |
2089 | /* by reusing the GREEN mask we free up another mmx |
2090 | register to accumulate the result */ |
2091 | |
2092 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
2093 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
2094 | pand_r2r(mm4, mm5); /* src & MASKRED -> mm5 */ |
2095 | pand_r2r(mm4, mm6); /* dst & MASKRED -> mm6 */ |
2096 | |
2097 | /* blend */ |
2098 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
2099 | pmulhw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
2100 | /* 11 + 15 - 16 = 10 bits, uninteresting bits will be |
2101 | cleared by a MASK below */ |
2102 | psllw_i2r(5, mm5); /* mm5 << 5 -> mm5 */ |
2103 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
2104 | pand_r2r(mm4, mm6); /* mm6 & MASKRED -> mm6 */ |
2105 | |
2106 | psrlq_i2r(5, mm4); /* turn MASKRED back into MASKGREEN */ |
2107 | |
2108 | movq_r2r(mm6, mm1); /* save new reds in dsts */ |
2109 | |
2110 | /* green -- process the bits in place */ |
2111 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
2112 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
2113 | pand_r2r(mm4, mm5); /* src & MASKGREEN -> mm5 */ |
2114 | pand_r2r(mm4, mm6); /* dst & MASKGREEN -> mm6 */ |
2115 | |
2116 | /* blend */ |
2117 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
2118 | pmulhw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
2119 | /* 11 + 10 - 16 = 5 bits, so all the lower uninteresting |
2120 | bits are gone and the sign bits present */ |
2121 | psllw_i2r(5, mm5); /* mm5 << 5 -> mm5 */ |
2122 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
2123 | |
2124 | por_r2r(mm6, mm1); /* save new greens in dsts */ |
2125 | |
2126 | /* blue */ |
2127 | movq_r2r(mm2, mm5); /* src -> mm5 */ |
2128 | movq_r2r(mm3, mm6); /* dst -> mm6 */ |
2129 | pand_r2r(mm7, mm5); /* src & MASKBLUE -> mm5[000b 000b 000b 000b] */ |
2130 | pand_r2r(mm7, mm6); /* dst & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
2131 | |
2132 | /* blend */ |
2133 | psubw_r2r(mm6, mm5);/* src - dst -> mm5 */ |
2134 | pmullw_r2r(mm0, mm5); /* mm5 * alpha -> mm5 */ |
2135 | /* 11 + 5 = 16 bits, so the sign bits are lost and |
2136 | the interesting bits will need to be MASKed */ |
2137 | psrlw_i2r(11, mm5); /* mm5 >> 11 -> mm5 */ |
2138 | paddw_r2r(mm5, mm6); /* mm5 + mm6(dst) -> mm6 */ |
2139 | pand_r2r(mm7, mm6); /* mm6 & MASKBLUE -> mm6[000b 000b 000b 000b] */ |
2140 | |
2141 | por_r2r(mm6, mm1); /* save new blues in dsts */ |
2142 | |
2143 | movq_r2m(mm1, *dstp);/* mm1 -> 4 dst pixels */ |
2144 | |
2145 | srcp += 4; |
2146 | dstp += 4; |
2147 | }, width); |
2148 | srcp += srcskip; |
2149 | dstp += dstskip; |
2150 | } |
2151 | emms(); |
2152 | } |
2153 | } |
2154 | /* End GCC_ASMBLIT */ |
2155 | |
2156 | #elif MSVC_ASMBLIT |
2157 | /* fast RGB565->RGB565 blending with surface alpha */ |
2158 | static void Blit565to565SurfaceAlphaMMX(SDL_BlitInfo *info) |
2159 | { |
2160 | unsigned alpha = info->src->alpha; |
2161 | if(alpha == 128) { |
2162 | Blit16to16SurfaceAlpha128(info, 0xf7de); |
2163 | } else { |
2164 | int width = info->d_width; |
2165 | int height = info->d_height; |
2166 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
2167 | int srcskip = info->s_skip >> 1; |
2168 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
2169 | int dstskip = info->d_skip >> 1; |
2170 | Uint32 s, d; |
2171 | |
2172 | __m64 src1, dst1, src2, dst2, gmask, bmask, mm_res, mm_alpha; |
2173 | |
2174 | alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
2175 | mm_alpha = _mm_set_pi32(0, alpha); /* 0000000A -> mm_alpha */ |
2176 | alpha >>= 3; /* downscale alpha to 5 bits */ |
2177 | |
2178 | mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
2179 | mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
2180 | /* position alpha to allow for mullo and mulhi on diff channels |
2181 | to reduce the number of operations */ |
2182 | mm_alpha = _mm_slli_si64(mm_alpha, 3); |
2183 | |
2184 | /* Setup the 565 color channel masks */ |
2185 | gmask = _mm_set_pi32(0x07E007E0, 0x07E007E0); /* MASKGREEN -> gmask */ |
2186 | bmask = _mm_set_pi32(0x001F001F, 0x001F001F); /* MASKBLUE -> bmask */ |
2187 | |
2188 | while(height--) { |
2189 | DUFFS_LOOP_QUATRO2( |
2190 | { |
2191 | s = *srcp++; |
2192 | d = *dstp; |
2193 | /* |
2194 | * shift out the middle component (green) to |
2195 | * the high 16 bits, and process all three RGB |
2196 | * components at the same time. |
2197 | */ |
2198 | s = (s | s << 16) & 0x07e0f81f; |
2199 | d = (d | d << 16) & 0x07e0f81f; |
2200 | d += (s - d) * alpha >> 5; |
2201 | d &= 0x07e0f81f; |
2202 | *dstp++ = (Uint16)(d | d >> 16); |
2203 | },{ |
2204 | s = *srcp++; |
2205 | d = *dstp; |
2206 | /* |
2207 | * shift out the middle component (green) to |
2208 | * the high 16 bits, and process all three RGB |
2209 | * components at the same time. |
2210 | */ |
2211 | s = (s | s << 16) & 0x07e0f81f; |
2212 | d = (d | d << 16) & 0x07e0f81f; |
2213 | d += (s - d) * alpha >> 5; |
2214 | d &= 0x07e0f81f; |
2215 | *dstp++ = (Uint16)(d | d >> 16); |
2216 | s = *srcp++; |
2217 | d = *dstp; |
2218 | /* |
2219 | * shift out the middle component (green) to |
2220 | * the high 16 bits, and process all three RGB |
2221 | * components at the same time. |
2222 | */ |
2223 | s = (s | s << 16) & 0x07e0f81f; |
2224 | d = (d | d << 16) & 0x07e0f81f; |
2225 | d += (s - d) * alpha >> 5; |
2226 | d &= 0x07e0f81f; |
2227 | *dstp++ = (Uint16)(d | d >> 16); |
2228 | },{ |
2229 | src1 = *(__m64*)srcp; /* 4 src pixels -> src1 */ |
2230 | dst1 = *(__m64*)dstp; /* 4 dst pixels -> dst1 */ |
2231 | |
2232 | /* red */ |
2233 | src2 = src1; |
2234 | src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 [000r 000r 000r 000r] */ |
2235 | |
2236 | dst2 = dst1; |
2237 | dst2 = _mm_srli_pi16(dst2, 11); /* dst2 >> 11 -> dst2 [000r 000r 000r 000r] */ |
2238 | |
2239 | /* blend */ |
2240 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
2241 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
2242 | src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 */ |
2243 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
2244 | dst2 = _mm_slli_pi16(dst2, 11); /* dst2 << 11 -> dst2 */ |
2245 | |
2246 | mm_res = dst2; /* RED -> mm_res */ |
2247 | |
2248 | /* green -- process the bits in place */ |
2249 | src2 = src1; |
2250 | src2 = _mm_and_si64(src2, gmask); /* src & MASKGREEN -> src2 */ |
2251 | |
2252 | dst2 = dst1; |
2253 | dst2 = _mm_and_si64(dst2, gmask); /* dst & MASKGREEN -> dst2 */ |
2254 | |
2255 | /* blend */ |
2256 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
2257 | src2 = _mm_mulhi_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
2258 | src2 = _mm_slli_pi16(src2, 5); /* src2 << 5 -> src2 */ |
2259 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
2260 | |
2261 | mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN -> mm_res */ |
2262 | |
2263 | /* blue */ |
2264 | src2 = src1; |
2265 | src2 = _mm_and_si64(src2, bmask); /* src & MASKBLUE -> src2[000b 000b 000b 000b] */ |
2266 | |
2267 | dst2 = dst1; |
2268 | dst2 = _mm_and_si64(dst2, bmask); /* dst & MASKBLUE -> dst2[000b 000b 000b 000b] */ |
2269 | |
2270 | /* blend */ |
2271 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
2272 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
2273 | src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 */ |
2274 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
2275 | dst2 = _mm_and_si64(dst2, bmask); /* dst2 & MASKBLUE -> dst2 */ |
2276 | |
2277 | mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN | BLUE -> mm_res */ |
2278 | |
2279 | *(__m64*)dstp = mm_res; /* mm_res -> 4 dst pixels */ |
2280 | |
2281 | srcp += 4; |
2282 | dstp += 4; |
2283 | }, width); |
2284 | srcp += srcskip; |
2285 | dstp += dstskip; |
2286 | } |
2287 | _mm_empty(); |
2288 | } |
2289 | } |
2290 | |
2291 | /* fast RGB555->RGB555 blending with surface alpha */ |
2292 | static void Blit555to555SurfaceAlphaMMX(SDL_BlitInfo *info) |
2293 | { |
2294 | unsigned alpha = info->src->alpha; |
2295 | if(alpha == 128) { |
2296 | Blit16to16SurfaceAlpha128(info, 0xfbde); |
2297 | } else { |
2298 | int width = info->d_width; |
2299 | int height = info->d_height; |
2300 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
2301 | int srcskip = info->s_skip >> 1; |
2302 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
2303 | int dstskip = info->d_skip >> 1; |
2304 | Uint32 s, d; |
2305 | |
2306 | __m64 src1, dst1, src2, dst2, rmask, gmask, bmask, mm_res, mm_alpha; |
2307 | |
2308 | alpha &= ~(1+2+4); /* cut alpha to get the exact same behaviour */ |
2309 | mm_alpha = _mm_set_pi32(0, alpha); /* 0000000A -> mm_alpha */ |
2310 | alpha >>= 3; /* downscale alpha to 5 bits */ |
2311 | |
2312 | mm_alpha = _mm_unpacklo_pi16(mm_alpha, mm_alpha); /* 00000A0A -> mm_alpha */ |
2313 | mm_alpha = _mm_unpacklo_pi32(mm_alpha, mm_alpha); /* 0A0A0A0A -> mm_alpha */ |
2314 | /* position alpha to allow for mullo and mulhi on diff channels |
2315 | to reduce the number of operations */ |
2316 | mm_alpha = _mm_slli_si64(mm_alpha, 3); |
2317 | |
2318 | /* Setup the 555 color channel masks */ |
2319 | rmask = _mm_set_pi32(0x7C007C00, 0x7C007C00); /* MASKRED -> rmask */ |
2320 | gmask = _mm_set_pi32(0x03E003E0, 0x03E003E0); /* MASKGREEN -> gmask */ |
2321 | bmask = _mm_set_pi32(0x001F001F, 0x001F001F); /* MASKBLUE -> bmask */ |
2322 | |
2323 | while(height--) { |
2324 | DUFFS_LOOP_QUATRO2( |
2325 | { |
2326 | s = *srcp++; |
2327 | d = *dstp; |
2328 | /* |
2329 | * shift out the middle component (green) to |
2330 | * the high 16 bits, and process all three RGB |
2331 | * components at the same time. |
2332 | */ |
2333 | s = (s | s << 16) & 0x03e07c1f; |
2334 | d = (d | d << 16) & 0x03e07c1f; |
2335 | d += (s - d) * alpha >> 5; |
2336 | d &= 0x03e07c1f; |
2337 | *dstp++ = (Uint16)(d | d >> 16); |
2338 | },{ |
2339 | s = *srcp++; |
2340 | d = *dstp; |
2341 | /* |
2342 | * shift out the middle component (green) to |
2343 | * the high 16 bits, and process all three RGB |
2344 | * components at the same time. |
2345 | */ |
2346 | s = (s | s << 16) & 0x03e07c1f; |
2347 | d = (d | d << 16) & 0x03e07c1f; |
2348 | d += (s - d) * alpha >> 5; |
2349 | d &= 0x03e07c1f; |
2350 | *dstp++ = (Uint16)(d | d >> 16); |
2351 | s = *srcp++; |
2352 | d = *dstp; |
2353 | /* |
2354 | * shift out the middle component (green) to |
2355 | * the high 16 bits, and process all three RGB |
2356 | * components at the same time. |
2357 | */ |
2358 | s = (s | s << 16) & 0x03e07c1f; |
2359 | d = (d | d << 16) & 0x03e07c1f; |
2360 | d += (s - d) * alpha >> 5; |
2361 | d &= 0x03e07c1f; |
2362 | *dstp++ = (Uint16)(d | d >> 16); |
2363 | },{ |
2364 | src1 = *(__m64*)srcp; /* 4 src pixels -> src1 */ |
2365 | dst1 = *(__m64*)dstp; /* 4 dst pixels -> dst1 */ |
2366 | |
2367 | /* red -- process the bits in place */ |
2368 | src2 = src1; |
2369 | src2 = _mm_and_si64(src2, rmask); /* src & MASKRED -> src2 */ |
2370 | |
2371 | dst2 = dst1; |
2372 | dst2 = _mm_and_si64(dst2, rmask); /* dst & MASKRED -> dst2 */ |
2373 | |
2374 | /* blend */ |
2375 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
2376 | src2 = _mm_mulhi_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
2377 | src2 = _mm_slli_pi16(src2, 5); /* src2 << 5 -> src2 */ |
2378 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
2379 | dst2 = _mm_and_si64(dst2, rmask); /* dst2 & MASKRED -> dst2 */ |
2380 | |
2381 | mm_res = dst2; /* RED -> mm_res */ |
2382 | |
2383 | /* green -- process the bits in place */ |
2384 | src2 = src1; |
2385 | src2 = _mm_and_si64(src2, gmask); /* src & MASKGREEN -> src2 */ |
2386 | |
2387 | dst2 = dst1; |
2388 | dst2 = _mm_and_si64(dst2, gmask); /* dst & MASKGREEN -> dst2 */ |
2389 | |
2390 | /* blend */ |
2391 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
2392 | src2 = _mm_mulhi_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
2393 | src2 = _mm_slli_pi16(src2, 5); /* src2 << 5 -> src2 */ |
2394 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
2395 | |
2396 | mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN -> mm_res */ |
2397 | |
2398 | /* blue */ |
2399 | src2 = src1; /* src -> src2 */ |
2400 | src2 = _mm_and_si64(src2, bmask); /* src & MASKBLUE -> src2[000b 000b 000b 000b] */ |
2401 | |
2402 | dst2 = dst1; /* dst -> dst2 */ |
2403 | dst2 = _mm_and_si64(dst2, bmask); /* dst & MASKBLUE -> dst2[000b 000b 000b 000b] */ |
2404 | |
2405 | /* blend */ |
2406 | src2 = _mm_sub_pi16(src2, dst2);/* src - dst -> src2 */ |
2407 | src2 = _mm_mullo_pi16(src2, mm_alpha); /* src2 * alpha -> src2 */ |
2408 | src2 = _mm_srli_pi16(src2, 11); /* src2 >> 11 -> src2 */ |
2409 | dst2 = _mm_add_pi16(src2, dst2); /* src2 + dst2 -> dst2 */ |
2410 | dst2 = _mm_and_si64(dst2, bmask); /* dst2 & MASKBLUE -> dst2 */ |
2411 | |
2412 | mm_res = _mm_or_si64(mm_res, dst2); /* RED | GREEN | BLUE -> mm_res */ |
2413 | |
2414 | *(__m64*)dstp = mm_res; /* mm_res -> 4 dst pixels */ |
2415 | |
2416 | srcp += 4; |
2417 | dstp += 4; |
2418 | }, width); |
2419 | srcp += srcskip; |
2420 | dstp += dstskip; |
2421 | } |
2422 | _mm_empty(); |
2423 | } |
2424 | } |
2425 | #endif /* GCC_ASMBLIT, MSVC_ASMBLIT */ |
2426 | |
2427 | /* fast RGB565->RGB565 blending with surface alpha */ |
2428 | static void Blit565to565SurfaceAlpha(SDL_BlitInfo *info) |
2429 | { |
2430 | unsigned alpha = info->src->alpha; |
2431 | if(alpha == 128) { |
2432 | Blit16to16SurfaceAlpha128(info, 0xf7de); |
2433 | } else { |
2434 | int width = info->d_width; |
2435 | int height = info->d_height; |
2436 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
2437 | int srcskip = info->s_skip >> 1; |
2438 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
2439 | int dstskip = info->d_skip >> 1; |
2440 | alpha >>= 3; /* downscale alpha to 5 bits */ |
2441 | |
2442 | while(height--) { |
2443 | DUFFS_LOOP4({ |
2444 | Uint32 s = *srcp++; |
2445 | Uint32 d = *dstp; |
2446 | /* |
2447 | * shift out the middle component (green) to |
2448 | * the high 16 bits, and process all three RGB |
2449 | * components at the same time. |
2450 | */ |
2451 | s = (s | s << 16) & 0x07e0f81f; |
2452 | d = (d | d << 16) & 0x07e0f81f; |
2453 | d += (s - d) * alpha >> 5; |
2454 | d &= 0x07e0f81f; |
2455 | *dstp++ = (Uint16)(d | d >> 16); |
2456 | }, width); |
2457 | srcp += srcskip; |
2458 | dstp += dstskip; |
2459 | } |
2460 | } |
2461 | } |
2462 | |
2463 | /* fast RGB555->RGB555 blending with surface alpha */ |
2464 | static void Blit555to555SurfaceAlpha(SDL_BlitInfo *info) |
2465 | { |
2466 | unsigned alpha = info->src->alpha; /* downscale alpha to 5 bits */ |
2467 | if(alpha == 128) { |
2468 | Blit16to16SurfaceAlpha128(info, 0xfbde); |
2469 | } else { |
2470 | int width = info->d_width; |
2471 | int height = info->d_height; |
2472 | Uint16 *srcp = (Uint16 *)info->s_pixels; |
2473 | int srcskip = info->s_skip >> 1; |
2474 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
2475 | int dstskip = info->d_skip >> 1; |
2476 | alpha >>= 3; /* downscale alpha to 5 bits */ |
2477 | |
2478 | while(height--) { |
2479 | DUFFS_LOOP4({ |
2480 | Uint32 s = *srcp++; |
2481 | Uint32 d = *dstp; |
2482 | /* |
2483 | * shift out the middle component (green) to |
2484 | * the high 16 bits, and process all three RGB |
2485 | * components at the same time. |
2486 | */ |
2487 | s = (s | s << 16) & 0x03e07c1f; |
2488 | d = (d | d << 16) & 0x03e07c1f; |
2489 | d += (s - d) * alpha >> 5; |
2490 | d &= 0x03e07c1f; |
2491 | *dstp++ = (Uint16)(d | d >> 16); |
2492 | }, width); |
2493 | srcp += srcskip; |
2494 | dstp += dstskip; |
2495 | } |
2496 | } |
2497 | } |
2498 | |
2499 | /* fast ARGB8888->RGB565 blending with pixel alpha */ |
2500 | static void BlitARGBto565PixelAlpha(SDL_BlitInfo *info) |
2501 | { |
2502 | int width = info->d_width; |
2503 | int height = info->d_height; |
2504 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
2505 | int srcskip = info->s_skip >> 2; |
2506 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
2507 | int dstskip = info->d_skip >> 1; |
2508 | |
2509 | while(height--) { |
2510 | DUFFS_LOOP4({ |
2511 | Uint32 s = *srcp; |
2512 | unsigned alpha = s >> 27; /* downscale alpha to 5 bits */ |
2513 | /* FIXME: Here we special-case opaque alpha since the |
2514 | compositioning used (>>8 instead of /255) doesn't handle |
2515 | it correctly. Also special-case alpha=0 for speed? |
2516 | Benchmark this! */ |
2517 | if(alpha) { |
2518 | if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
2519 | *dstp = (Uint16)((s >> 8 & 0xf800) + (s >> 5 & 0x7e0) + (s >> 3 & 0x1f)); |
2520 | } else { |
2521 | Uint32 d = *dstp; |
2522 | /* |
2523 | * convert source and destination to G0RAB65565 |
2524 | * and blend all components at the same time |
2525 | */ |
2526 | s = ((s & 0xfc00) << 11) + (s >> 8 & 0xf800) |
2527 | + (s >> 3 & 0x1f); |
2528 | d = (d | d << 16) & 0x07e0f81f; |
2529 | d += (s - d) * alpha >> 5; |
2530 | d &= 0x07e0f81f; |
2531 | *dstp = (Uint16)(d | d >> 16); |
2532 | } |
2533 | } |
2534 | srcp++; |
2535 | dstp++; |
2536 | }, width); |
2537 | srcp += srcskip; |
2538 | dstp += dstskip; |
2539 | } |
2540 | } |
2541 | |
2542 | /* fast ARGB8888->RGB555 blending with pixel alpha */ |
2543 | static void BlitARGBto555PixelAlpha(SDL_BlitInfo *info) |
2544 | { |
2545 | int width = info->d_width; |
2546 | int height = info->d_height; |
2547 | Uint32 *srcp = (Uint32 *)info->s_pixels; |
2548 | int srcskip = info->s_skip >> 2; |
2549 | Uint16 *dstp = (Uint16 *)info->d_pixels; |
2550 | int dstskip = info->d_skip >> 1; |
2551 | |
2552 | while(height--) { |
2553 | DUFFS_LOOP4({ |
2554 | unsigned alpha; |
2555 | Uint32 s = *srcp; |
2556 | alpha = s >> 27; /* downscale alpha to 5 bits */ |
2557 | /* FIXME: Here we special-case opaque alpha since the |
2558 | compositioning used (>>8 instead of /255) doesn't handle |
2559 | it correctly. Also special-case alpha=0 for speed? |
2560 | Benchmark this! */ |
2561 | if(alpha) { |
2562 | if(alpha == (SDL_ALPHA_OPAQUE >> 3)) { |
2563 | *dstp = (Uint16)((s >> 9 & 0x7c00) + (s >> 6 & 0x3e0) + (s >> 3 & 0x1f)); |
2564 | } else { |
2565 | Uint32 d = *dstp; |
2566 | /* |
2567 | * convert source and destination to G0RAB65565 |
2568 | * and blend all components at the same time |
2569 | */ |
2570 | s = ((s & 0xf800) << 10) + (s >> 9 & 0x7c00) |
2571 | + (s >> 3 & 0x1f); |
2572 | d = (d | d << 16) & 0x03e07c1f; |
2573 | d += (s - d) * alpha >> 5; |
2574 | d &= 0x03e07c1f; |
2575 | *dstp = (Uint16)(d | d >> 16); |
2576 | } |
2577 | } |
2578 | srcp++; |
2579 | dstp++; |
2580 | }, width); |
2581 | srcp += srcskip; |
2582 | dstp += dstskip; |
2583 | } |
2584 | } |
2585 | |
2586 | /* General (slow) N->N blending with per-surface alpha */ |
2587 | static void BlitNtoNSurfaceAlpha(SDL_BlitInfo *info) |
2588 | { |
2589 | int width = info->d_width; |
2590 | int height = info->d_height; |
2591 | Uint8 *src = info->s_pixels; |
2592 | int srcskip = info->s_skip; |
2593 | Uint8 *dst = info->d_pixels; |
2594 | int dstskip = info->d_skip; |
2595 | SDL_PixelFormat *srcfmt = info->src; |
2596 | SDL_PixelFormat *dstfmt = info->dst; |
2597 | int srcbpp = srcfmt->BytesPerPixel; |
2598 | int dstbpp = dstfmt->BytesPerPixel; |
2599 | unsigned sA = srcfmt->alpha; |
2600 | unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
2601 | |
2602 | if(sA) { |
2603 | while ( height-- ) { |
2604 | DUFFS_LOOP4( |
2605 | { |
2606 | Uint32 Pixel; |
2607 | unsigned sR; |
2608 | unsigned sG; |
2609 | unsigned sB; |
2610 | unsigned dR; |
2611 | unsigned dG; |
2612 | unsigned dB; |
2613 | DISEMBLE_RGB(src, srcbpp, srcfmt, Pixel, sR, sG, sB); |
2614 | DISEMBLE_RGB(dst, dstbpp, dstfmt, Pixel, dR, dG, dB); |
2615 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
2616 | ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
2617 | src += srcbpp; |
2618 | dst += dstbpp; |
2619 | }, |
2620 | width); |
2621 | src += srcskip; |
2622 | dst += dstskip; |
2623 | } |
2624 | } |
2625 | } |
2626 | |
2627 | /* General (slow) colorkeyed N->N blending with per-surface alpha */ |
2628 | static void BlitNtoNSurfaceAlphaKey(SDL_BlitInfo *info) |
2629 | { |
2630 | int width = info->d_width; |
2631 | int height = info->d_height; |
2632 | Uint8 *src = info->s_pixels; |
2633 | int srcskip = info->s_skip; |
2634 | Uint8 *dst = info->d_pixels; |
2635 | int dstskip = info->d_skip; |
2636 | SDL_PixelFormat *srcfmt = info->src; |
2637 | SDL_PixelFormat *dstfmt = info->dst; |
2638 | Uint32 ckey = srcfmt->colorkey; |
2639 | int srcbpp = srcfmt->BytesPerPixel; |
2640 | int dstbpp = dstfmt->BytesPerPixel; |
2641 | unsigned sA = srcfmt->alpha; |
2642 | unsigned dA = dstfmt->Amask ? SDL_ALPHA_OPAQUE : 0; |
2643 | |
2644 | while ( height-- ) { |
2645 | DUFFS_LOOP4( |
2646 | { |
2647 | Uint32 Pixel; |
2648 | unsigned sR; |
2649 | unsigned sG; |
2650 | unsigned sB; |
2651 | unsigned dR; |
2652 | unsigned dG; |
2653 | unsigned dB; |
2654 | RETRIEVE_RGB_PIXEL(src, srcbpp, Pixel); |
2655 | if(sA && Pixel != ckey) { |
2656 | RGB_FROM_PIXEL(Pixel, srcfmt, sR, sG, sB); |
2657 | DISEMBLE_RGB(dst, dstbpp, dstfmt, Pixel, dR, dG, dB); |
2658 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
2659 | ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
2660 | } |
2661 | src += srcbpp; |
2662 | dst += dstbpp; |
2663 | }, |
2664 | width); |
2665 | src += srcskip; |
2666 | dst += dstskip; |
2667 | } |
2668 | } |
2669 | |
2670 | /* General (slow) N->N blending with pixel alpha */ |
2671 | static void BlitNtoNPixelAlpha(SDL_BlitInfo *info) |
2672 | { |
2673 | int width = info->d_width; |
2674 | int height = info->d_height; |
2675 | Uint8 *src = info->s_pixels; |
2676 | int srcskip = info->s_skip; |
2677 | Uint8 *dst = info->d_pixels; |
2678 | int dstskip = info->d_skip; |
2679 | SDL_PixelFormat *srcfmt = info->src; |
2680 | SDL_PixelFormat *dstfmt = info->dst; |
2681 | |
2682 | int srcbpp; |
2683 | int dstbpp; |
2684 | |
2685 | /* Set up some basic variables */ |
2686 | srcbpp = srcfmt->BytesPerPixel; |
2687 | dstbpp = dstfmt->BytesPerPixel; |
2688 | |
2689 | /* FIXME: for 8bpp source alpha, this doesn't get opaque values |
2690 | quite right. for <8bpp source alpha, it gets them very wrong |
2691 | (check all macros!) |
2692 | It is unclear whether there is a good general solution that doesn't |
2693 | need a branch (or a divide). */ |
2694 | while ( height-- ) { |
2695 | DUFFS_LOOP4( |
2696 | { |
2697 | Uint32 Pixel; |
2698 | unsigned sR; |
2699 | unsigned sG; |
2700 | unsigned sB; |
2701 | unsigned dR; |
2702 | unsigned dG; |
2703 | unsigned dB; |
2704 | unsigned sA; |
2705 | unsigned dA; |
2706 | DISEMBLE_RGBA(src, srcbpp, srcfmt, Pixel, sR, sG, sB, sA); |
2707 | if(sA) { |
2708 | DISEMBLE_RGBA(dst, dstbpp, dstfmt, Pixel, dR, dG, dB, dA); |
2709 | ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB); |
2710 | ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA); |
2711 | } |
2712 | src += srcbpp; |
2713 | dst += dstbpp; |
2714 | }, |
2715 | width); |
2716 | src += srcskip; |
2717 | dst += dstskip; |
2718 | } |
2719 | } |
2720 | |
2721 | |
2722 | SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int blit_index) |
2723 | { |
2724 | SDL_PixelFormat *sf = surface->format; |
2725 | SDL_PixelFormat *df = surface->map->dst->format; |
2726 | |
2727 | if(sf->Amask == 0) { |
2728 | if((surface->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) { |
2729 | if(df->BytesPerPixel == 1) |
2730 | return BlitNto1SurfaceAlphaKey; |
2731 | else |
2732 | #if SDL_ALTIVEC_BLITTERS |
2733 | if (sf->BytesPerPixel == 4 && df->BytesPerPixel == 4 && |
2734 | !(surface->map->dst->flags & SDL_HWSURFACE) && SDL_HasAltiVec()) |
2735 | return Blit32to32SurfaceAlphaKeyAltivec; |
2736 | else |
2737 | #endif |
2738 | return BlitNtoNSurfaceAlphaKey; |
2739 | } else { |
2740 | /* Per-surface alpha blits */ |
2741 | switch(df->BytesPerPixel) { |
2742 | case 1: |
2743 | return BlitNto1SurfaceAlpha; |
2744 | |
2745 | case 2: |
2746 | if(surface->map->identity) { |
2747 | if(df->Gmask == 0x7e0) |
2748 | { |
2749 | #if MMX_ASMBLIT |
2750 | if(SDL_HasMMX()) |
2751 | return Blit565to565SurfaceAlphaMMX; |
2752 | else |
2753 | #endif |
2754 | return Blit565to565SurfaceAlpha; |
2755 | } |
2756 | else if(df->Gmask == 0x3e0) |
2757 | { |
2758 | #if MMX_ASMBLIT |
2759 | if(SDL_HasMMX()) |
2760 | return Blit555to555SurfaceAlphaMMX; |
2761 | else |
2762 | #endif |
2763 | return Blit555to555SurfaceAlpha; |
2764 | } |
2765 | } |
2766 | return BlitNtoNSurfaceAlpha; |
2767 | |
2768 | case 4: |
2769 | if(sf->Rmask == df->Rmask |
2770 | && sf->Gmask == df->Gmask |
2771 | && sf->Bmask == df->Bmask |
2772 | && sf->BytesPerPixel == 4) |
2773 | { |
2774 | #if MMX_ASMBLIT |
2775 | if(sf->Rshift % 8 == 0 |
2776 | && sf->Gshift % 8 == 0 |
2777 | && sf->Bshift % 8 == 0 |
2778 | && SDL_HasMMX()) |
2779 | return BlitRGBtoRGBSurfaceAlphaMMX; |
2780 | #endif |
2781 | if((sf->Rmask | sf->Gmask | sf->Bmask) == 0xffffff) |
2782 | { |
2783 | #if SDL_ALTIVEC_BLITTERS |
2784 | if(!(surface->map->dst->flags & SDL_HWSURFACE) |
2785 | && SDL_HasAltiVec()) |
2786 | return BlitRGBtoRGBSurfaceAlphaAltivec; |
2787 | #endif |
2788 | return BlitRGBtoRGBSurfaceAlpha; |
2789 | } |
2790 | } |
2791 | #if SDL_ALTIVEC_BLITTERS |
2792 | if((sf->BytesPerPixel == 4) && |
2793 | !(surface->map->dst->flags & SDL_HWSURFACE) && SDL_HasAltiVec()) |
2794 | return Blit32to32SurfaceAlphaAltivec; |
2795 | else |
2796 | #endif |
2797 | return BlitNtoNSurfaceAlpha; |
2798 | |
2799 | case 3: |
2800 | default: |
2801 | return BlitNtoNSurfaceAlpha; |
2802 | } |
2803 | } |
2804 | } else { |
2805 | /* Per-pixel alpha blits */ |
2806 | switch(df->BytesPerPixel) { |
2807 | case 1: |
2808 | return BlitNto1PixelAlpha; |
2809 | |
2810 | case 2: |
2811 | #if SDL_ALTIVEC_BLITTERS |
2812 | if(sf->BytesPerPixel == 4 && !(surface->map->dst->flags & SDL_HWSURFACE) && |
2813 | df->Gmask == 0x7e0 && |
2814 | df->Bmask == 0x1f && SDL_HasAltiVec()) |
2815 | return Blit32to565PixelAlphaAltivec; |
2816 | else |
2817 | #endif |
2818 | if(sf->BytesPerPixel == 4 && sf->Amask == 0xff000000 |
2819 | && sf->Gmask == 0xff00 |
2820 | && ((sf->Rmask == 0xff && df->Rmask == 0x1f) |
2821 | || (sf->Bmask == 0xff && df->Bmask == 0x1f))) { |
2822 | if(df->Gmask == 0x7e0) |
2823 | return BlitARGBto565PixelAlpha; |
2824 | else if(df->Gmask == 0x3e0) |
2825 | return BlitARGBto555PixelAlpha; |
2826 | } |
2827 | return BlitNtoNPixelAlpha; |
2828 | |
2829 | case 4: |
2830 | if(sf->Rmask == df->Rmask |
2831 | && sf->Gmask == df->Gmask |
2832 | && sf->Bmask == df->Bmask |
2833 | && sf->BytesPerPixel == 4) |
2834 | { |
2835 | #if MMX_ASMBLIT |
2836 | if(sf->Rshift % 8 == 0 |
2837 | && sf->Gshift % 8 == 0 |
2838 | && sf->Bshift % 8 == 0 |
2839 | && sf->Ashift % 8 == 0 |
2840 | && sf->Aloss == 0) |
2841 | { |
2842 | if(SDL_Has3DNow()) |
2843 | return BlitRGBtoRGBPixelAlphaMMX3DNOW; |
2844 | if(SDL_HasMMX()) |
2845 | return BlitRGBtoRGBPixelAlphaMMX; |
2846 | } |
2847 | #endif |
2848 | if(sf->Amask == 0xff000000) |
2849 | { |
2850 | #if SDL_ALTIVEC_BLITTERS |
2851 | if(!(surface->map->dst->flags & SDL_HWSURFACE) |
2852 | && SDL_HasAltiVec()) |
2853 | return BlitRGBtoRGBPixelAlphaAltivec; |
2854 | #endif |
2855 | return BlitRGBtoRGBPixelAlpha; |
2856 | } |
2857 | } |
2858 | #if SDL_ALTIVEC_BLITTERS |
2859 | if (sf->Amask && sf->BytesPerPixel == 4 && |
2860 | !(surface->map->dst->flags & SDL_HWSURFACE) && SDL_HasAltiVec()) |
2861 | return Blit32to32PixelAlphaAltivec; |
2862 | else |
2863 | #endif |
2864 | return BlitNtoNPixelAlpha; |
2865 | |
2866 | case 3: |
2867 | default: |
2868 | return BlitNtoNPixelAlpha; |
2869 | } |
2870 | } |
2871 | } |
2872 | |