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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
SDL_BlitInfo info
Definition: SDL_blit.h:91