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SDL_blit.h
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1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "SDL_config.h"
22
23 #ifndef _SDL_blit_h
24 #define _SDL_blit_h
25
26 #include "SDL_cpuinfo.h"
27 #include "SDL_endian.h"
28 #include "SDL_surface.h"
29
30 /* Table to do pixel byte expansion */
31 extern Uint8* SDL_expand_byte[9];
32
33 /* SDL blit copy flags */
34 #define SDL_COPY_MODULATE_COLOR 0x00000001
35 #define SDL_COPY_MODULATE_ALPHA 0x00000002
36 #define SDL_COPY_BLEND 0x00000010
37 #define SDL_COPY_ADD 0x00000020
38 #define SDL_COPY_MOD 0x00000040
39 #define SDL_COPY_COLORKEY 0x00000100
40 #define SDL_COPY_NEAREST 0x00000200
41 #define SDL_COPY_RLE_DESIRED 0x00001000
42 #define SDL_COPY_RLE_COLORKEY 0x00002000
43 #define SDL_COPY_RLE_ALPHAKEY 0x00004000
44 #define SDL_COPY_RLE_MASK (SDL_COPY_RLE_DESIRED|SDL_COPY_RLE_COLORKEY|SDL_COPY_RLE_ALPHAKEY)
45
46 /* SDL blit CPU flags */
47 #define SDL_CPU_ANY 0x00000000
48 #define SDL_CPU_MMX 0x00000001
49 #define SDL_CPU_3DNOW 0x00000002
50 #define SDL_CPU_SSE 0x00000004
51 #define SDL_CPU_SSE2 0x00000008
52 #define SDL_CPU_ALTIVEC_PREFETCH 0x00000010
53 #define SDL_CPU_ALTIVEC_NOPREFETCH 0x00000020
54
55 typedef struct
56 {
57 Uint8 *src;
58 int src_w, src_h;
59 int src_pitch;
60 int src_skip;
61 Uint8 *dst;
62 int dst_w, dst_h;
63 int dst_pitch;
64 int dst_skip;
65 SDL_PixelFormat *src_fmt;
66 SDL_PixelFormat *dst_fmt;
67 Uint8 *table;
68 int flags;
69 Uint32 colorkey;
70 Uint8 r, g, b, a;
71 } SDL_BlitInfo;
72
73 typedef void (SDLCALL * SDL_BlitFunc) (SDL_BlitInfo * info);
74
75 typedef struct
76 {
77 Uint32 src_format;
78 Uint32 dst_format;
79 int flags;
80 int cpu;
81 SDL_BlitFunc func;
82 } SDL_BlitFuncEntry;
83
84 /* Blit mapping definition */
85 typedef struct SDL_BlitMap
86 {
87 SDL_Surface *dst;
88 int identity;
89 SDL_blit blit;
90 void *data;
91 SDL_BlitInfo info;
92
93 /* the version count matches the destination; mismatch indicates
94 an invalid mapping */
95 Uint32 dst_palette_version;
96 Uint32 src_palette_version;
97 } SDL_BlitMap;
98
99 /* Functions found in SDL_blit.c */
100 extern int SDL_CalculateBlit(SDL_Surface * surface);
101
102 /* Functions found in SDL_blit_*.c */
103 extern SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface * surface);
104 extern SDL_BlitFunc SDL_CalculateBlit1(SDL_Surface * surface);
105 extern SDL_BlitFunc SDL_CalculateBlitN(SDL_Surface * surface);
106 extern SDL_BlitFunc SDL_CalculateBlitA(SDL_Surface * surface);
107
108 /*
109 * Useful macros for blitting routines
110 */
111
112 #if defined(__GNUC__)
113 #define DECLARE_ALIGNED(t,v,a) t __attribute__((aligned(a))) v
114 #elif defined(_MSC_VER)
115 #define DECLARE_ALIGNED(t,v,a) __declspec(align(a)) t v
116 #else
117 #define DECLARE_ALIGNED(t,v,a) t v
118 #endif
119
120 /* Load pixel of the specified format from a buffer and get its R-G-B values */
121 #define RGB_FROM_PIXEL(Pixel, fmt, r, g, b) \
122 { \
123 r = SDL_expand_byte[fmt->Rloss][((Pixel&fmt->Rmask)>>fmt->Rshift)]; \
124 g = SDL_expand_byte[fmt->Gloss][((Pixel&fmt->Gmask)>>fmt->Gshift)]; \
125 b = SDL_expand_byte[fmt->Bloss][((Pixel&fmt->Bmask)>>fmt->Bshift)]; \
126 }
127 #define RGB_FROM_RGB565(Pixel, r, g, b) \
128 { \
129 r = SDL_expand_byte[3][((Pixel&0xF800)>>11)]; \
130 g = SDL_expand_byte[2][((Pixel&0x07E0)>>5)]; \
131 b = SDL_expand_byte[3][(Pixel&0x001F)]; \
132 }
133 #define RGB_FROM_RGB555(Pixel, r, g, b) \
134 { \
135 r = SDL_expand_byte[3][((Pixel&0x7C00)>>10)]; \
136 g = SDL_expand_byte[3][((Pixel&0x03E0)>>5)]; \
137 b = SDL_expand_byte[3][(Pixel&0x001F)]; \
138 }
139 #define RGB_FROM_RGB888(Pixel, r, g, b) \
140 { \
141 r = ((Pixel&0xFF0000)>>16); \
142 g = ((Pixel&0xFF00)>>8); \
143 b = (Pixel&0xFF); \
144 }
145 #define RETRIEVE_RGB_PIXEL(buf, bpp, Pixel) \
146 do { \
147 switch (bpp) { \
148 case 1: \
149 Pixel = *((Uint8 *)(buf)); \
150 break; \
151 \
152 case 2: \
153 Pixel = *((Uint16 *)(buf)); \
154 break; \
155 \
156 case 3: { \
157 Uint8 *B = (Uint8 *)(buf); \
158 if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
159 Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \
160 } else { \
161 Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \
162 } \
163 } \
164 break; \
165 \
166 case 4: \
167 Pixel = *((Uint32 *)(buf)); \
168 break; \
169 \
170 default: \
171 Pixel = 0; /* stop gcc complaints */ \
172 break; \
173 } \
174 } while (0)
175
176 #define DISEMBLE_RGB(buf, bpp, fmt, Pixel, r, g, b) \
177 do { \
178 switch (bpp) { \
179 case 1: \
180 Pixel = *((Uint8 *)(buf)); \
181 RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \
182 break; \
183 \
184 case 2: \
185 Pixel = *((Uint16 *)(buf)); \
186 RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \
187 break; \
188 \
189 case 3: { \
190 Pixel = 0; \
191 if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
192 r = *((buf)+fmt->Rshift/8); \
193 g = *((buf)+fmt->Gshift/8); \
194 b = *((buf)+fmt->Bshift/8); \
195 } else { \
196 r = *((buf)+2-fmt->Rshift/8); \
197 g = *((buf)+2-fmt->Gshift/8); \
198 b = *((buf)+2-fmt->Bshift/8); \
199 } \
200 } \
201 break; \
202 \
203 case 4: \
204 Pixel = *((Uint32 *)(buf)); \
205 RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \
206 break; \
207 \
208 default: \
209 /* stop gcc complaints */ \
210 Pixel = 0; \
211 r = g = b = 0; \
212 break; \
213 } \
214 } while (0)
215
216 /* Assemble R-G-B values into a specified pixel format and store them */
217 #define PIXEL_FROM_RGB(Pixel, fmt, r, g, b) \
218 { \
219 Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \
220 ((g>>fmt->Gloss)<<fmt->Gshift)| \
221 ((b>>fmt->Bloss)<<fmt->Bshift)| \
222 fmt->Amask; \
223 }
224 #define RGB565_FROM_RGB(Pixel, r, g, b) \
225 { \
226 Pixel = ((r>>3)<<11)|((g>>2)<<5)|(b>>3); \
227 }
228 #define RGB555_FROM_RGB(Pixel, r, g, b) \
229 { \
230 Pixel = ((r>>3)<<10)|((g>>3)<<5)|(b>>3); \
231 }
232 #define RGB888_FROM_RGB(Pixel, r, g, b) \
233 { \
234 Pixel = (r<<16)|(g<<8)|b; \
235 }
236 #define ARGB8888_FROM_RGBA(Pixel, r, g, b, a) \
237 { \
238 Pixel = (a<<24)|(r<<16)|(g<<8)|b; \
239 }
240 #define RGBA8888_FROM_RGBA(Pixel, r, g, b, a) \
241 { \
242 Pixel = (r<<24)|(g<<16)|(b<<8)|a; \
243 }
244 #define ABGR8888_FROM_RGBA(Pixel, r, g, b, a) \
245 { \
246 Pixel = (a<<24)|(b<<16)|(g<<8)|r; \
247 }
248 #define BGRA8888_FROM_RGBA(Pixel, r, g, b, a) \
249 { \
250 Pixel = (b<<24)|(g<<16)|(r<<8)|a; \
251 }
252 #define ARGB2101010_FROM_RGBA(Pixel, r, g, b, a) \
253 { \
254 r = r ? ((r << 2) | 0x3) : 0; \
255 g = g ? ((g << 2) | 0x3) : 0; \
256 b = b ? ((b << 2) | 0x3) : 0; \
257 a = (a * 3) / 255; \
258 Pixel = (a<<30)|(r<<20)|(g<<10)|b; \
259 }
260 #define ASSEMBLE_RGB(buf, bpp, fmt, r, g, b) \
261 { \
262 switch (bpp) { \
263 case 1: { \
264 Uint8 Pixel; \
265 \
266 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \
267 *((Uint8 *)(buf)) = Pixel; \
268 } \
269 break; \
270 \
271 case 2: { \
272 Uint16 Pixel; \
273 \
274 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \
275 *((Uint16 *)(buf)) = Pixel; \
276 } \
277 break; \
278 \
279 case 3: { \
280 if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
281 *((buf)+fmt->Rshift/8) = r; \
282 *((buf)+fmt->Gshift/8) = g; \
283 *((buf)+fmt->Bshift/8) = b; \
284 } else { \
285 *((buf)+2-fmt->Rshift/8) = r; \
286 *((buf)+2-fmt->Gshift/8) = g; \
287 *((buf)+2-fmt->Bshift/8) = b; \
288 } \
289 } \
290 break; \
291 \
292 case 4: { \
293 Uint32 Pixel; \
294 \
295 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \
296 *((Uint32 *)(buf)) = Pixel; \
297 } \
298 break; \
299 } \
300 }
301
302 /* FIXME: Should we rescale alpha into 0..255 here? */
303 #define RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a) \
304 { \
305 r = SDL_expand_byte[fmt->Rloss][((Pixel&fmt->Rmask)>>fmt->Rshift)]; \
306 g = SDL_expand_byte[fmt->Gloss][((Pixel&fmt->Gmask)>>fmt->Gshift)]; \
307 b = SDL_expand_byte[fmt->Bloss][((Pixel&fmt->Bmask)>>fmt->Bshift)]; \
308 a = SDL_expand_byte[fmt->Aloss][((Pixel&fmt->Amask)>>fmt->Ashift)]; \
309 }
310 #define RGBA_FROM_8888(Pixel, fmt, r, g, b, a) \
311 { \
312 r = (Pixel&fmt->Rmask)>>fmt->Rshift; \
313 g = (Pixel&fmt->Gmask)>>fmt->Gshift; \
314 b = (Pixel&fmt->Bmask)>>fmt->Bshift; \
315 a = (Pixel&fmt->Amask)>>fmt->Ashift; \
316 }
317 #define RGBA_FROM_RGBA8888(Pixel, r, g, b, a) \
318 { \
319 r = (Pixel>>24); \
320 g = ((Pixel>>16)&0xFF); \
321 b = ((Pixel>>8)&0xFF); \
322 a = (Pixel&0xFF); \
323 }
324 #define RGBA_FROM_ARGB8888(Pixel, r, g, b, a) \
325 { \
326 r = ((Pixel>>16)&0xFF); \
327 g = ((Pixel>>8)&0xFF); \
328 b = (Pixel&0xFF); \
329 a = (Pixel>>24); \
330 }
331 #define RGBA_FROM_ABGR8888(Pixel, r, g, b, a) \
332 { \
333 r = (Pixel&0xFF); \
334 g = ((Pixel>>8)&0xFF); \
335 b = ((Pixel>>16)&0xFF); \
336 a = (Pixel>>24); \
337 }
338 #define RGBA_FROM_BGRA8888(Pixel, r, g, b, a) \
339 { \
340 r = ((Pixel>>8)&0xFF); \
341 g = ((Pixel>>16)&0xFF); \
342 b = (Pixel>>24); \
343 a = (Pixel&0xFF); \
344 }
345 #define RGBA_FROM_ARGB2101010(Pixel, r, g, b, a) \
346 { \
347 r = ((Pixel>>22)&0xFF); \
348 g = ((Pixel>>12)&0xFF); \
349 b = ((Pixel>>2)&0xFF); \
350 a = SDL_expand_byte[6][(Pixel>>30)]; \
351 }
352 #define DISEMBLE_RGBA(buf, bpp, fmt, Pixel, r, g, b, a) \
353 do { \
354 switch (bpp) { \
355 case 1: \
356 Pixel = *((Uint8 *)(buf)); \
357 RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \
358 break; \
359 \
360 case 2: \
361 Pixel = *((Uint16 *)(buf)); \
362 RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \
363 break; \
364 \
365 case 3: { \
366 Pixel = 0; \
367 if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
368 r = *((buf)+fmt->Rshift/8); \
369 g = *((buf)+fmt->Gshift/8); \
370 b = *((buf)+fmt->Bshift/8); \
371 } else { \
372 r = *((buf)+2-fmt->Rshift/8); \
373 g = *((buf)+2-fmt->Gshift/8); \
374 b = *((buf)+2-fmt->Bshift/8); \
375 } \
376 a = 0xFF; \
377 } \
378 break; \
379 \
380 case 4: \
381 Pixel = *((Uint32 *)(buf)); \
382 RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \
383 break; \
384 \
385 default: \
386 /* stop gcc complaints */ \
387 Pixel = 0; \
388 r = g = b = a = 0; \
389 break; \
390 } \
391 } while (0)
392
393 /* FIXME: this isn't correct, especially for Alpha (maximum != 255) */
394 #define PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a) \
395 { \
396 Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \
397 ((g>>fmt->Gloss)<<fmt->Gshift)| \
398 ((b>>fmt->Bloss)<<fmt->Bshift)| \
399 ((a>>fmt->Aloss)<<fmt->Ashift); \
400 }
401 #define ASSEMBLE_RGBA(buf, bpp, fmt, r, g, b, a) \
402 { \
403 switch (bpp) { \
404 case 1: { \
405 Uint8 Pixel; \
406 \
407 PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a); \
408 *((Uint8 *)(buf)) = Pixel; \
409 } \
410 break; \
411 \
412 case 2: { \
413 Uint16 Pixel; \
414 \
415 PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a); \
416 *((Uint16 *)(buf)) = Pixel; \
417 } \
418 break; \
419 \
420 case 3: { \
421 if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
422 *((buf)+fmt->Rshift/8) = r; \
423 *((buf)+fmt->Gshift/8) = g; \
424 *((buf)+fmt->Bshift/8) = b; \
425 } else { \
426 *((buf)+2-fmt->Rshift/8) = r; \
427 *((buf)+2-fmt->Gshift/8) = g; \
428 *((buf)+2-fmt->Bshift/8) = b; \
429 } \
430 } \
431 break; \
432 \
433 case 4: { \
434 Uint32 Pixel; \
435 \
436 PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a); \
437 *((Uint32 *)(buf)) = Pixel; \
438 } \
439 break; \
440 } \
441 }
442
443 /* Blend the RGB values of two pixels with an alpha value */
444 #define ALPHA_BLEND_RGB(sR, sG, sB, A, dR, dG, dB) \
445 do { \
446 dR = ((((unsigned)(sR-dR)*(unsigned)A)/255)+dR); \
447 dG = ((((unsigned)(sG-dG)*(unsigned)A)/255)+dG); \
448 dB = ((((unsigned)(sB-dB)*(unsigned)A)/255)+dB); \
449 } while(0)
450
451
452 /* Blend the RGBA values of two pixels */
453 #define ALPHA_BLEND_RGBA(sR, sG, sB, sA, dR, dG, dB, dA) \
454 do { \
455 dR = ((((unsigned)(sR-dR)*(unsigned)sA)/255)+dR); \
456 dG = ((((unsigned)(sG-dG)*(unsigned)sA)/255)+dG); \
457 dB = ((((unsigned)(sB-dB)*(unsigned)sA)/255)+dB); \
458 dA = ((unsigned)sA+(unsigned)dA-((unsigned)sA*dA)/255); \
459 } while(0)
460
461
462 /* This is a very useful loop for optimizing blitters */
463 #if defined(_MSC_VER) && (_MSC_VER == 1300)
464 /* There's a bug in the Visual C++ 7 optimizer when compiling this code */
465 #else
466 #define USE_DUFFS_LOOP
467 #endif
468 #ifdef USE_DUFFS_LOOP
469
470 /* 8-times unrolled loop */
471 #define DUFFS_LOOP8(pixel_copy_increment, width) \
472 { int n = (width+7)/8; \
473 switch (width & 7) { \
474 case 0: do { pixel_copy_increment; \
475 case 7: pixel_copy_increment; \
476 case 6: pixel_copy_increment; \
477 case 5: pixel_copy_increment; \
478 case 4: pixel_copy_increment; \
479 case 3: pixel_copy_increment; \
480 case 2: pixel_copy_increment; \
481 case 1: pixel_copy_increment; \
482 } while ( --n > 0 ); \
483 } \
484 }
485
486 /* 4-times unrolled loop */
487 #define DUFFS_LOOP4(pixel_copy_increment, width) \
488 { int n = (width+3)/4; \
489 switch (width & 3) { \
490 case 0: do { pixel_copy_increment; \
491 case 3: pixel_copy_increment; \
492 case 2: pixel_copy_increment; \
493 case 1: pixel_copy_increment; \
494 } while (--n > 0); \
495 } \
496 }
497
498 /* Use the 8-times version of the loop by default */
499 #define DUFFS_LOOP(pixel_copy_increment, width) \
500 DUFFS_LOOP8(pixel_copy_increment, width)
501
502 /* Special version of Duff's device for even more optimization */
503 #define DUFFS_LOOP_124(pixel_copy_increment1, \
504 pixel_copy_increment2, \
505 pixel_copy_increment4, width) \
506 { int n = width; \
507 if (n & 1) { \
508 pixel_copy_increment1; n -= 1; \
509 } \
510 if (n & 2) { \
511 pixel_copy_increment2; n -= 2; \
512 } \
513 if (n & 4) { \
514 pixel_copy_increment4; n -= 4; \
515 } \
516 if (n) { \
517 n /= 8; \
518 do { \
519 pixel_copy_increment4; \
520 pixel_copy_increment4; \
521 } while (--n > 0); \
522 } \
523 }
524
525 #else
526
527 /* Don't use Duff's device to unroll loops */
528 #define DUFFS_LOOP(pixel_copy_increment, width) \
529 { int n; \
530 for ( n=width; n > 0; --n ) { \
531 pixel_copy_increment; \
532 } \
533 }
534 #define DUFFS_LOOP8(pixel_copy_increment, width) \
535 DUFFS_LOOP(pixel_copy_increment, width)
536 #define DUFFS_LOOP4(pixel_copy_increment, width) \
537 DUFFS_LOOP(pixel_copy_increment, width)
538 #define DUFFS_LOOP_124(pixel_copy_increment1, \
539 pixel_copy_increment2, \
540 pixel_copy_increment4, width) \
541 DUFFS_LOOP(pixel_copy_increment1, width)
542
543 #endif /* USE_DUFFS_LOOP */
544
545 /* Prevent Visual C++ 6.0 from printing out stupid warnings */
546 #if defined(_MSC_VER) && (_MSC_VER >= 600)
547 #pragma warning(disable: 4550)
548 #endif
549
550 #endif /* _SDL_blit_h */
551
552 /* vi: set ts=4 sw=4 expandtab: */
SDL_BlitFuncEntry::func
SDL_BlitFunc func
Definition: SDL_blit.h:81
SDL_BlitInfo::table
Uint8 * table
Definition: SDL_blit.h:67
SDL_BlitInfo::r
Uint8 r
Definition: SDL_blit.h:70
void
GLvoid **typedef void(GLAPIENTRY *PFNGLGETVERTEXATTRIBDVPROC)(GLuint
Definition: glew.h:1824
SDL_CalculateBlitN
SDL_BlitFunc SDL_CalculateBlitN(SDL_Surface *surface)
Definition: SDL_blit_N.c:2500
SDL_BlitMap::blit
SDL_blit blit
Definition: SDL_blit.h:89
SDL_BlitInfo::src_skip
int src_skip
Definition: SDL_blit.h:60
g
GLboolean GLboolean g
Definition: glew.h:8736
SDL_BlitInfo::flags
int flags
Definition: SDL_blit.h:68
SDL_BlitInfo::src_fmt
SDL_PixelFormat * src_fmt
Definition: SDL_blit.h:65
surface
EGLSurface surface
Definition: eglext.h:74
SDL_Surface
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
SDL_BlitFuncEntry::src_format
Uint32 src_format
Definition: SDL_blit.h:77
a
GLboolean GLboolean GLboolean GLboolean a
Definition: glew.h:8736
SDL_BlitMap::dst_palette_version
Uint32 dst_palette_version
Definition: SDL_blit.h:95
SDL_BlitInfo::dst_pitch
int dst_pitch
Definition: SDL_blit.h:63
SDL_BlitInfo::dst_skip
int dst_skip
Definition: SDL_blit.h:64
SDL_BlitInfo::src_w
int src_w
Definition: SDL_blit.h:58
SDLCALL
#define SDLCALL
Definition: begin_code.h:72
SDL_config.h
SDL_BlitInfo::colorkey
Uint32 colorkey
Definition: SDL_blit.h:69
SDL_BlitMap::src_palette_version
Uint32 src_palette_version
Definition: SDL_blit.h:96
SDL_cpuinfo.h
Uint32
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:145
SDL_surface.h
SDL_BlitInfo::dst
Uint8 * dst
Definition: SDL_blit.h:61
SDL_BlitFuncEntry::cpu
int cpu
Definition: SDL_blit.h:80
SDL_BlitInfo
Definition: SDL_blit.h:55
SDL_expand_byte
Uint8 * SDL_expand_byte[9]
Definition: SDL_pixels.c:71
SDL_BlitInfo::src
Uint8 * src
Definition: SDL_blit.h:57
SDL_CalculateBlit
int SDL_CalculateBlit(SDL_Surface *surface)
Definition: SDL_blit.c:216
SDL_BlitFuncEntry
Definition: SDL_blit.h:75
SDL_BlitInfo::dst_fmt
SDL_PixelFormat * dst_fmt
Definition: SDL_blit.h:66
SDL_BlitInfo::src_pitch
int src_pitch
Definition: SDL_blit.h:59
SDL_BlitFuncEntry::dst_format
Uint32 dst_format
Definition: SDL_blit.h:78
SDL_endian.h
SDL_BlitMap::dst
SDL_Surface * dst
Definition: SDL_blit.h:87
SDL_CalculateBlit0
SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface)
Definition: SDL_blit_0.c:454
SDL_BlitMap
struct SDL_BlitMap SDL_BlitMap
Uint8
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:129
SDL_CalculateBlit1
SDL_BlitFunc SDL_CalculateBlit1(SDL_Surface *surface)
Definition: SDL_blit_1.c:520
SDL_PixelFormat
Definition: SDL_pixels.h:272
SDL_BlitFuncEntry::flags
int flags
Definition: SDL_blit.h:79
SDL_blit
int(* SDL_blit)(struct SDL_Surface *src, SDL_Rect *srcrect, struct SDL_Surface *dst, SDL_Rect *dstrect)
The type of function used for surface blitting functions.
Definition: SDL_surface.h:97
b
GLdouble GLdouble GLdouble b
Definition: glew.h:8383
SDL_BlitMap::data
void * data
Definition: SDL_blit.h:90
SDL_BlitMap
Definition: SDL_blit.h:85
SDL_BlitInfo::dst_w
int dst_w
Definition: SDL_blit.h:62
SDL_CalculateBlitA
SDL_BlitFunc SDL_CalculateBlitA(SDL_Surface *surface)
Definition: SDL_blit_A.c:1271
SDL_BlitMap::identity
int identity
Definition: SDL_blit.h:88
SDL_BlitMap::info
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Definition: SDL_blit.h:91