SDL  2.0
SDL_render.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2017 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_internal.h"
22 
23 /* The SDL 2D rendering system */
24 
25 #include "SDL_assert.h"
26 #include "SDL_hints.h"
27 #include "SDL_log.h"
28 #include "SDL_render.h"
29 #include "SDL_sysrender.h"
31 
32 
33 #define SDL_WINDOWRENDERDATA "_SDL_WindowRenderData"
34 
35 #define CHECK_RENDERER_MAGIC(renderer, retval) \
36  SDL_assert(renderer && renderer->magic == &renderer_magic); \
37  if (!renderer || renderer->magic != &renderer_magic) { \
38  SDL_SetError("Invalid renderer"); \
39  return retval; \
40  }
41 
42 #define CHECK_TEXTURE_MAGIC(texture, retval) \
43  SDL_assert(texture && texture->magic == &texture_magic); \
44  if (!texture || texture->magic != &texture_magic) { \
45  SDL_SetError("Invalid texture"); \
46  return retval; \
47  }
48 
49 /* Predefined blend modes */
50 #define SDL_COMPOSE_BLENDMODE(srcColorFactor, dstColorFactor, colorOperation, \
51  srcAlphaFactor, dstAlphaFactor, alphaOperation) \
52  (SDL_BlendMode)(((Uint32)colorOperation << 0) | \
53  ((Uint32)srcColorFactor << 4) | \
54  ((Uint32)dstColorFactor << 8) | \
55  ((Uint32)alphaOperation << 16) | \
56  ((Uint32)srcAlphaFactor << 20) | \
57  ((Uint32)dstAlphaFactor << 24))
58 
59 #define SDL_BLENDMODE_NONE_FULL \
60  SDL_COMPOSE_BLENDMODE(SDL_BLENDFACTOR_ONE, SDL_BLENDFACTOR_ZERO, SDL_BLENDOPERATION_ADD, \
61  SDL_BLENDFACTOR_ONE, SDL_BLENDFACTOR_ZERO, SDL_BLENDOPERATION_ADD)
62 
63 #define SDL_BLENDMODE_BLEND_FULL \
64  SDL_COMPOSE_BLENDMODE(SDL_BLENDFACTOR_SRC_ALPHA, SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA, SDL_BLENDOPERATION_ADD, \
65  SDL_BLENDFACTOR_ONE, SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA, SDL_BLENDOPERATION_ADD)
66 
67 #define SDL_BLENDMODE_ADD_FULL \
68  SDL_COMPOSE_BLENDMODE(SDL_BLENDFACTOR_SRC_ALPHA, SDL_BLENDFACTOR_ONE, SDL_BLENDOPERATION_ADD, \
69  SDL_BLENDFACTOR_ZERO, SDL_BLENDFACTOR_ONE, SDL_BLENDOPERATION_ADD)
70 
71 #define SDL_BLENDMODE_MOD_FULL \
72  SDL_COMPOSE_BLENDMODE(SDL_BLENDFACTOR_ZERO, SDL_BLENDFACTOR_SRC_COLOR, SDL_BLENDOPERATION_ADD, \
73  SDL_BLENDFACTOR_ZERO, SDL_BLENDFACTOR_ONE, SDL_BLENDOPERATION_ADD)
74 
75 #if !SDL_RENDER_DISABLED
76 static const SDL_RenderDriver *render_drivers[] = {
77 #if SDL_VIDEO_RENDER_D3D
79 #endif
80 #if SDL_VIDEO_RENDER_D3D11
82 #endif
83 #if SDL_VIDEO_RENDER_OGL
85 #endif
86 #if SDL_VIDEO_RENDER_OGL_ES2
88 #endif
89 #if SDL_VIDEO_RENDER_OGL_ES
91 #endif
92 #if SDL_VIDEO_RENDER_DIRECTFB
94 #endif
95 #if SDL_VIDEO_RENDER_PSP
97 #endif
99 };
100 #endif /* !SDL_RENDER_DISABLED */
101 
102 static char renderer_magic;
103 static char texture_magic;
104 
106 
107 int
109 {
110 #if !SDL_RENDER_DISABLED
111  return SDL_arraysize(render_drivers);
112 #else
113  return 0;
114 #endif
115 }
116 
117 int
119 {
120 #if !SDL_RENDER_DISABLED
122  return SDL_SetError("index must be in the range of 0 - %d",
124  }
125  *info = render_drivers[index]->info;
126  return 0;
127 #else
128  return SDL_SetError("SDL not built with rendering support");
129 #endif
130 }
131 
132 static int SDLCALL
134 {
135  SDL_Renderer *renderer = (SDL_Renderer *)userdata;
136 
137  if (event->type == SDL_WINDOWEVENT) {
139  if (window == renderer->window) {
140  if (renderer->WindowEvent) {
141  renderer->WindowEvent(renderer, &event->window);
142  }
143 
144  if (event->window.event == SDL_WINDOWEVENT_SIZE_CHANGED) {
145  /* Make sure we're operating on the default render target */
146  SDL_Texture *saved_target = SDL_GetRenderTarget(renderer);
147  if (saved_target) {
148  SDL_SetRenderTarget(renderer, NULL);
149  }
150 
151  if (renderer->logical_w) {
152  UpdateLogicalSize(renderer);
153  } else {
154  /* Window was resized, reset viewport */
155  int w, h;
156 
157  if (renderer->GetOutputSize) {
158  renderer->GetOutputSize(renderer, &w, &h);
159  } else {
160  SDL_GetWindowSize(renderer->window, &w, &h);
161  }
162 
163  if (renderer->target) {
164  renderer->viewport_backup.x = 0;
165  renderer->viewport_backup.y = 0;
166  renderer->viewport_backup.w = w;
167  renderer->viewport_backup.h = h;
168  } else {
169  renderer->viewport.x = 0;
170  renderer->viewport.y = 0;
171  renderer->viewport.w = w;
172  renderer->viewport.h = h;
173  renderer->UpdateViewport(renderer);
174  }
175  }
176 
177  if (saved_target) {
178  SDL_SetRenderTarget(renderer, saved_target);
179  }
180  } else if (event->window.event == SDL_WINDOWEVENT_HIDDEN) {
181  renderer->hidden = SDL_TRUE;
182  } else if (event->window.event == SDL_WINDOWEVENT_SHOWN) {
183  if (!(SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)) {
184  renderer->hidden = SDL_FALSE;
185  }
186  } else if (event->window.event == SDL_WINDOWEVENT_MINIMIZED) {
187  renderer->hidden = SDL_TRUE;
188  } else if (event->window.event == SDL_WINDOWEVENT_RESTORED ||
190  if (!(SDL_GetWindowFlags(window) & SDL_WINDOW_HIDDEN)) {
191  renderer->hidden = SDL_FALSE;
192  }
193  }
194  }
195  } else if (event->type == SDL_MOUSEMOTION) {
197  if (renderer->logical_w && window == renderer->window) {
198  event->motion.x -= (int)(renderer->viewport.x * renderer->dpi_scale.x);
199  event->motion.y -= (int)(renderer->viewport.y * renderer->dpi_scale.y);
200  event->motion.x = (int)(event->motion.x / (renderer->scale.x * renderer->dpi_scale.x));
201  event->motion.y = (int)(event->motion.y / (renderer->scale.y * renderer->dpi_scale.y));
202  if (event->motion.xrel > 0) {
203  event->motion.xrel = SDL_max(1, (int)(event->motion.xrel / (renderer->scale.x * renderer->dpi_scale.x)));
204  } else if (event->motion.xrel < 0) {
205  event->motion.xrel = SDL_min(-1, (int)(event->motion.xrel / (renderer->scale.x * renderer->dpi_scale.x)));
206  }
207  if (event->motion.yrel > 0) {
208  event->motion.yrel = SDL_max(1, (int)(event->motion.yrel / (renderer->scale.y * renderer->dpi_scale.y)));
209  } else if (event->motion.yrel < 0) {
210  event->motion.yrel = SDL_min(-1, (int)(event->motion.yrel / (renderer->scale.y * renderer->dpi_scale.y)));
211  }
212  }
213  } else if (event->type == SDL_MOUSEBUTTONDOWN ||
214  event->type == SDL_MOUSEBUTTONUP) {
216  if (renderer->logical_w && window == renderer->window) {
217  event->button.x -= (int)(renderer->viewport.x * renderer->dpi_scale.x);
218  event->button.y -= (int)(renderer->viewport.y * renderer->dpi_scale.y);
219  event->button.x = (int)(event->button.x / (renderer->scale.x * renderer->dpi_scale.x));
220  event->button.y = (int)(event->button.y / (renderer->scale.y * renderer->dpi_scale.y));
221  }
222  }
223  return 0;
224 }
225 
226 int
229 {
232  width, height, window_flags);
233  if (!*window) {
234  *renderer = NULL;
235  return -1;
236  }
237 
238  *renderer = SDL_CreateRenderer(*window, -1, 0);
239  if (!*renderer) {
240  return -1;
241  }
242 
243  return 0;
244 }
245 
246 SDL_Renderer *
248 {
249 #if !SDL_RENDER_DISABLED
251  int n = SDL_GetNumRenderDrivers();
252  const char *hint;
253 
254  if (!window) {
255  SDL_SetError("Invalid window");
256  return NULL;
257  }
258 
259  if (SDL_GetRenderer(window)) {
260  SDL_SetError("Renderer already associated with window");
261  return NULL;
262  }
263 
266  flags |= SDL_RENDERER_PRESENTVSYNC;
267  } else {
268  flags &= ~SDL_RENDERER_PRESENTVSYNC;
269  }
270  }
271 
272  if (index < 0) {
274  if (hint) {
275  for (index = 0; index < n; ++index) {
276  const SDL_RenderDriver *driver = render_drivers[index];
277 
278  if (SDL_strcasecmp(hint, driver->info.name) == 0) {
279  /* Create a new renderer instance */
280  renderer = driver->CreateRenderer(window, flags);
281  break;
282  }
283  }
284  }
285 
286  if (!renderer) {
287  for (index = 0; index < n; ++index) {
288  const SDL_RenderDriver *driver = render_drivers[index];
289 
290  if ((driver->info.flags & flags) == flags) {
291  /* Create a new renderer instance */
292  renderer = driver->CreateRenderer(window, flags);
293  if (renderer) {
294  /* Yay, we got one! */
295  break;
296  }
297  }
298  }
299  }
300  if (index == n) {
301  SDL_SetError("Couldn't find matching render driver");
302  return NULL;
303  }
304  } else {
305  if (index >= SDL_GetNumRenderDrivers()) {
306  SDL_SetError("index must be -1 or in the range of 0 - %d",
308  return NULL;
309  }
310  /* Create a new renderer instance */
311  renderer = render_drivers[index]->CreateRenderer(window, flags);
312  }
313 
314  if (renderer) {
315  renderer->magic = &renderer_magic;
316  renderer->window = window;
317  renderer->scale.x = 1.0f;
318  renderer->scale.y = 1.0f;
319  renderer->dpi_scale.x = 1.0f;
320  renderer->dpi_scale.y = 1.0f;
321 
322  if (window && renderer->GetOutputSize) {
323  int window_w, window_h;
324  int output_w, output_h;
325  if (renderer->GetOutputSize(renderer, &output_w, &output_h) == 0) {
326  SDL_GetWindowSize(renderer->window, &window_w, &window_h);
327  renderer->dpi_scale.x = (float)window_w / output_w;
328  renderer->dpi_scale.y = (float)window_h / output_h;
329  }
330  }
331 
333  renderer->hidden = SDL_TRUE;
334  } else {
335  renderer->hidden = SDL_FALSE;
336  }
337 
338  SDL_SetWindowData(window, SDL_WINDOWRENDERDATA, renderer);
339 
340  SDL_RenderSetViewport(renderer, NULL);
341 
343 
345  "Created renderer: %s", renderer->info.name);
346  }
347  return renderer;
348 #else
349  SDL_SetError("SDL not built with rendering support");
350  return NULL;
351 #endif
352 }
353 
354 SDL_Renderer *
356 {
357 #if !SDL_RENDER_DISABLED
359 
360  renderer = SW_CreateRendererForSurface(surface);
361 
362  if (renderer) {
363  renderer->magic = &renderer_magic;
364  renderer->scale.x = 1.0f;
365  renderer->scale.y = 1.0f;
366 
367  SDL_RenderSetViewport(renderer, NULL);
368  }
369  return renderer;
370 #else
371  SDL_SetError("SDL not built with rendering support");
372  return NULL;
373 #endif /* !SDL_RENDER_DISABLED */
374 }
375 
376 SDL_Renderer *
378 {
380 }
381 
382 int
384 {
385  CHECK_RENDERER_MAGIC(renderer, -1);
386 
387  *info = renderer->info;
388  return 0;
389 }
390 
391 int
393 {
394  CHECK_RENDERER_MAGIC(renderer, -1);
395 
396  if (renderer->target) {
397  return SDL_QueryTexture(renderer->target, NULL, NULL, w, h);
398  } else if (renderer->GetOutputSize) {
399  return renderer->GetOutputSize(renderer, w, h);
400  } else if (renderer->window) {
401  SDL_GetWindowSize(renderer->window, w, h);
402  return 0;
403  } else {
404  SDL_assert(0 && "This should never happen");
405  return SDL_SetError("Renderer doesn't support querying output size");
406  }
407 }
408 
409 static SDL_bool
411 {
412  switch (blendMode)
413  {
414  /* These are required to be supported by all renderers */
415  case SDL_BLENDMODE_NONE:
416  case SDL_BLENDMODE_BLEND:
417  case SDL_BLENDMODE_ADD:
418  case SDL_BLENDMODE_MOD:
419  return SDL_TRUE;
420 
421  default:
422  return renderer->SupportsBlendMode && renderer->SupportsBlendMode(renderer, blendMode);
423  }
424 }
425 
426 static SDL_bool
428 {
429  Uint32 i;
430 
431  for (i = 0; i < renderer->info.num_texture_formats; ++i) {
432  if (renderer->info.texture_formats[i] == format) {
433  return SDL_TRUE;
434  }
435  }
436  return SDL_FALSE;
437 }
438 
439 static Uint32
441 {
442  Uint32 i;
443 
444  if (SDL_ISPIXELFORMAT_FOURCC(format)) {
445  /* Look for an exact match */
446  for (i = 0; i < renderer->info.num_texture_formats; ++i) {
447  if (renderer->info.texture_formats[i] == format) {
448  return renderer->info.texture_formats[i];
449  }
450  }
451  } else {
452  SDL_bool hasAlpha = SDL_ISPIXELFORMAT_ALPHA(format);
453 
454  /* We just want to match the first format that has the same channels */
455  for (i = 0; i < renderer->info.num_texture_formats; ++i) {
456  if (!SDL_ISPIXELFORMAT_FOURCC(renderer->info.texture_formats[i]) &&
457  SDL_ISPIXELFORMAT_ALPHA(renderer->info.texture_formats[i]) == hasAlpha) {
458  return renderer->info.texture_formats[i];
459  }
460  }
461  }
462  return renderer->info.texture_formats[0];
463 }
464 
465 SDL_Texture *
467 {
469 
470  CHECK_RENDERER_MAGIC(renderer, NULL);
471 
472  if (!format) {
473  format = renderer->info.texture_formats[0];
474  }
475  if (SDL_BYTESPERPIXEL(format) == 0) {
476  SDL_SetError("Invalid texture format");
477  return NULL;
478  }
479  if (SDL_ISPIXELFORMAT_INDEXED(format)) {
480  SDL_SetError("Palettized textures are not supported");
481  return NULL;
482  }
483  if (w <= 0 || h <= 0) {
484  SDL_SetError("Texture dimensions can't be 0");
485  return NULL;
486  }
487  if ((renderer->info.max_texture_width && w > renderer->info.max_texture_width) ||
488  (renderer->info.max_texture_height && h > renderer->info.max_texture_height)) {
489  SDL_SetError("Texture dimensions are limited to %dx%d", renderer->info.max_texture_width, renderer->info.max_texture_height);
490  return NULL;
491  }
492  texture = (SDL_Texture *) SDL_calloc(1, sizeof(*texture));
493  if (!texture) {
494  SDL_OutOfMemory();
495  return NULL;
496  }
497  texture->magic = &texture_magic;
498  texture->format = format;
499  texture->access = access;
500  texture->w = w;
501  texture->h = h;
502  texture->r = 255;
503  texture->g = 255;
504  texture->b = 255;
505  texture->a = 255;
506  texture->renderer = renderer;
507  texture->next = renderer->textures;
508  if (renderer->textures) {
509  renderer->textures->prev = texture;
510  }
511  renderer->textures = texture;
512 
513  if (IsSupportedFormat(renderer, format)) {
514  if (renderer->CreateTexture(renderer, texture) < 0) {
515  SDL_DestroyTexture(texture);
516  return NULL;
517  }
518  } else {
519  texture->native = SDL_CreateTexture(renderer,
520  GetClosestSupportedFormat(renderer, format),
521  access, w, h);
522  if (!texture->native) {
523  SDL_DestroyTexture(texture);
524  return NULL;
525  }
526 
527  /* Swap textures to have texture before texture->native in the list */
528  texture->native->next = texture->next;
529  if (texture->native->next) {
530  texture->native->next->prev = texture->native;
531  }
532  texture->prev = texture->native->prev;
533  if (texture->prev) {
534  texture->prev->next = texture;
535  }
536  texture->native->prev = texture;
537  texture->next = texture->native;
538  renderer->textures = texture;
539 
540  if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
541  texture->yuv = SDL_SW_CreateYUVTexture(format, w, h);
542  if (!texture->yuv) {
543  SDL_DestroyTexture(texture);
544  return NULL;
545  }
546  } else if (access == SDL_TEXTUREACCESS_STREAMING) {
547  /* The pitch is 4 byte aligned */
548  texture->pitch = (((w * SDL_BYTESPERPIXEL(format)) + 3) & ~3);
549  texture->pixels = SDL_calloc(1, texture->pitch * h);
550  if (!texture->pixels) {
551  SDL_DestroyTexture(texture);
552  return NULL;
553  }
554  }
555  }
556  return texture;
557 }
558 
559 SDL_Texture *
561 {
562  const SDL_PixelFormat *fmt;
563  SDL_bool needAlpha;
564  Uint32 i;
565  Uint32 format;
567 
568  CHECK_RENDERER_MAGIC(renderer, NULL);
569 
570  if (!surface) {
571  SDL_SetError("SDL_CreateTextureFromSurface() passed NULL surface");
572  return NULL;
573  }
574 
575  /* See what the best texture format is */
576  fmt = surface->format;
577  if (fmt->Amask || SDL_GetColorKey(surface, NULL) == 0) {
578  needAlpha = SDL_TRUE;
579  } else {
580  needAlpha = SDL_FALSE;
581  }
582  format = renderer->info.texture_formats[0];
583  for (i = 0; i < renderer->info.num_texture_formats; ++i) {
584  if (!SDL_ISPIXELFORMAT_FOURCC(renderer->info.texture_formats[i]) &&
585  SDL_ISPIXELFORMAT_ALPHA(renderer->info.texture_formats[i]) == needAlpha) {
586  format = renderer->info.texture_formats[i];
587  break;
588  }
589  }
590 
591  texture = SDL_CreateTexture(renderer, format, SDL_TEXTUREACCESS_STATIC,
592  surface->w, surface->h);
593  if (!texture) {
594  return NULL;
595  }
596 
597  if (format == surface->format->format) {
598  if (SDL_MUSTLOCK(surface)) {
599  SDL_LockSurface(surface);
600  SDL_UpdateTexture(texture, NULL, surface->pixels, surface->pitch);
601  SDL_UnlockSurface(surface);
602  } else {
603  SDL_UpdateTexture(texture, NULL, surface->pixels, surface->pitch);
604  }
605  } else {
606  SDL_PixelFormat *dst_fmt;
607  SDL_Surface *temp = NULL;
608 
609  /* Set up a destination surface for the texture update */
610  dst_fmt = SDL_AllocFormat(format);
611  if (!dst_fmt) {
612  SDL_DestroyTexture(texture);
613  return NULL;
614  }
615  temp = SDL_ConvertSurface(surface, dst_fmt, 0);
616  SDL_FreeFormat(dst_fmt);
617  if (temp) {
618  SDL_UpdateTexture(texture, NULL, temp->pixels, temp->pitch);
619  SDL_FreeSurface(temp);
620  } else {
621  SDL_DestroyTexture(texture);
622  return NULL;
623  }
624  }
625 
626  {
627  Uint8 r, g, b, a;
629 
630  SDL_GetSurfaceColorMod(surface, &r, &g, &b);
631  SDL_SetTextureColorMod(texture, r, g, b);
632 
633  SDL_GetSurfaceAlphaMod(surface, &a);
634  SDL_SetTextureAlphaMod(texture, a);
635 
636  if (SDL_GetColorKey(surface, NULL) == 0) {
637  /* We converted to a texture with alpha format */
639  } else {
640  SDL_GetSurfaceBlendMode(surface, &blendMode);
641  SDL_SetTextureBlendMode(texture, blendMode);
642  }
643  }
644  return texture;
645 }
646 
647 int
649  int *w, int *h)
650 {
651  CHECK_TEXTURE_MAGIC(texture, -1);
652 
653  if (format) {
654  *format = texture->format;
655  }
656  if (access) {
657  *access = texture->access;
658  }
659  if (w) {
660  *w = texture->w;
661  }
662  if (h) {
663  *h = texture->h;
664  }
665  return 0;
666 }
667 
668 int
670 {
672 
673  CHECK_TEXTURE_MAGIC(texture, -1);
674 
675  renderer = texture->renderer;
676  if (r < 255 || g < 255 || b < 255) {
678  } else {
679  texture->modMode &= ~SDL_TEXTUREMODULATE_COLOR;
680  }
681  texture->r = r;
682  texture->g = g;
683  texture->b = b;
684  if (texture->native) {
685  return SDL_SetTextureColorMod(texture->native, r, g, b);
686  } else if (renderer->SetTextureColorMod) {
687  return renderer->SetTextureColorMod(renderer, texture);
688  } else {
689  return 0;
690  }
691 }
692 
693 int
695  Uint8 * b)
696 {
697  CHECK_TEXTURE_MAGIC(texture, -1);
698 
699  if (r) {
700  *r = texture->r;
701  }
702  if (g) {
703  *g = texture->g;
704  }
705  if (b) {
706  *b = texture->b;
707  }
708  return 0;
709 }
710 
711 int
713 {
715 
716  CHECK_TEXTURE_MAGIC(texture, -1);
717 
718  renderer = texture->renderer;
719  if (alpha < 255) {
721  } else {
722  texture->modMode &= ~SDL_TEXTUREMODULATE_ALPHA;
723  }
724  texture->a = alpha;
725  if (texture->native) {
726  return SDL_SetTextureAlphaMod(texture->native, alpha);
727  } else if (renderer->SetTextureAlphaMod) {
728  return renderer->SetTextureAlphaMod(renderer, texture);
729  } else {
730  return 0;
731  }
732 }
733 
734 int
736 {
737  CHECK_TEXTURE_MAGIC(texture, -1);
738 
739  if (alpha) {
740  *alpha = texture->a;
741  }
742  return 0;
743 }
744 
745 int
747 {
749 
750  CHECK_TEXTURE_MAGIC(texture, -1);
751 
752  renderer = texture->renderer;
753  if (!IsSupportedBlendMode(renderer, blendMode)) {
754  return SDL_Unsupported();
755  }
756  texture->blendMode = blendMode;
757  if (texture->native) {
758  return SDL_SetTextureBlendMode(texture->native, blendMode);
759  } else if (renderer->SetTextureBlendMode) {
760  return renderer->SetTextureBlendMode(renderer, texture);
761  } else {
762  return 0;
763  }
764 }
765 
766 int
768 {
769  CHECK_TEXTURE_MAGIC(texture, -1);
770 
771  if (blendMode) {
772  *blendMode = texture->blendMode;
773  }
774  return 0;
775 }
776 
777 static int
779  const void *pixels, int pitch)
780 {
781  SDL_Texture *native = texture->native;
782  SDL_Rect full_rect;
783 
784  if (SDL_SW_UpdateYUVTexture(texture->yuv, rect, pixels, pitch) < 0) {
785  return -1;
786  }
787 
788  full_rect.x = 0;
789  full_rect.y = 0;
790  full_rect.w = texture->w;
791  full_rect.h = texture->h;
792  rect = &full_rect;
793 
794  if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
795  /* We can lock the texture and copy to it */
796  void *native_pixels = NULL;
797  int native_pitch = 0;
798 
799  if (SDL_LockTexture(native, rect, &native_pixels, &native_pitch) < 0) {
800  return -1;
801  }
802  SDL_SW_CopyYUVToRGB(texture->yuv, rect, native->format,
803  rect->w, rect->h, native_pixels, native_pitch);
804  SDL_UnlockTexture(native);
805  } else {
806  /* Use a temporary buffer for updating */
807  const int temp_pitch = (((rect->w * SDL_BYTESPERPIXEL(native->format)) + 3) & ~3);
808  const size_t alloclen = rect->h * temp_pitch;
809  if (alloclen > 0) {
810  void *temp_pixels = SDL_malloc(alloclen);
811  if (!temp_pixels) {
812  return SDL_OutOfMemory();
813  }
814  SDL_SW_CopyYUVToRGB(texture->yuv, rect, native->format,
815  rect->w, rect->h, temp_pixels, temp_pitch);
816  SDL_UpdateTexture(native, rect, temp_pixels, temp_pitch);
817  SDL_free(temp_pixels);
818  }
819  }
820  return 0;
821 }
822 
823 static int
825  const void *pixels, int pitch)
826 {
827  SDL_Texture *native = texture->native;
828 
829  if (!rect->w || !rect->h) {
830  return 0; /* nothing to do. */
831  }
832 
833  if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
834  /* We can lock the texture and copy to it */
835  void *native_pixels = NULL;
836  int native_pitch = 0;
837 
838  if (SDL_LockTexture(native, rect, &native_pixels, &native_pitch) < 0) {
839  return -1;
840  }
841  SDL_ConvertPixels(rect->w, rect->h,
842  texture->format, pixels, pitch,
843  native->format, native_pixels, native_pitch);
844  SDL_UnlockTexture(native);
845  } else {
846  /* Use a temporary buffer for updating */
847  const int temp_pitch = (((rect->w * SDL_BYTESPERPIXEL(native->format)) + 3) & ~3);
848  const size_t alloclen = rect->h * temp_pitch;
849  if (alloclen > 0) {
850  void *temp_pixels = SDL_malloc(alloclen);
851  if (!temp_pixels) {
852  return SDL_OutOfMemory();
853  }
854  SDL_ConvertPixels(rect->w, rect->h,
855  texture->format, pixels, pitch,
856  native->format, temp_pixels, temp_pitch);
857  SDL_UpdateTexture(native, rect, temp_pixels, temp_pitch);
858  SDL_free(temp_pixels);
859  }
860  }
861  return 0;
862 }
863 
864 int
866  const void *pixels, int pitch)
867 {
869  SDL_Rect full_rect;
870 
871  CHECK_TEXTURE_MAGIC(texture, -1);
872 
873  if (!pixels) {
874  return SDL_InvalidParamError("pixels");
875  }
876  if (!pitch) {
877  return SDL_InvalidParamError("pitch");
878  }
879 
880  if (!rect) {
881  full_rect.x = 0;
882  full_rect.y = 0;
883  full_rect.w = texture->w;
884  full_rect.h = texture->h;
885  rect = &full_rect;
886  }
887 
888  if ((rect->w == 0) || (rect->h == 0)) {
889  return 0; /* nothing to do. */
890  } else if (texture->yuv) {
891  return SDL_UpdateTextureYUV(texture, rect, pixels, pitch);
892  } else if (texture->native) {
893  return SDL_UpdateTextureNative(texture, rect, pixels, pitch);
894  } else {
895  renderer = texture->renderer;
896  return renderer->UpdateTexture(renderer, texture, rect, pixels, pitch);
897  }
898 }
899 
900 static int
902  const Uint8 *Yplane, int Ypitch,
903  const Uint8 *Uplane, int Upitch,
904  const Uint8 *Vplane, int Vpitch)
905 {
906  SDL_Texture *native = texture->native;
907  SDL_Rect full_rect;
908 
909  if (SDL_SW_UpdateYUVTexturePlanar(texture->yuv, rect, Yplane, Ypitch, Uplane, Upitch, Vplane, Vpitch) < 0) {
910  return -1;
911  }
912 
913  full_rect.x = 0;
914  full_rect.y = 0;
915  full_rect.w = texture->w;
916  full_rect.h = texture->h;
917  rect = &full_rect;
918 
919  if (!rect->w || !rect->h) {
920  return 0; /* nothing to do. */
921  }
922 
923  if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
924  /* We can lock the texture and copy to it */
925  void *native_pixels = NULL;
926  int native_pitch = 0;
927 
928  if (SDL_LockTexture(native, rect, &native_pixels, &native_pitch) < 0) {
929  return -1;
930  }
931  SDL_SW_CopyYUVToRGB(texture->yuv, rect, native->format,
932  rect->w, rect->h, native_pixels, native_pitch);
933  SDL_UnlockTexture(native);
934  } else {
935  /* Use a temporary buffer for updating */
936  const int temp_pitch = (((rect->w * SDL_BYTESPERPIXEL(native->format)) + 3) & ~3);
937  const size_t alloclen = rect->h * temp_pitch;
938  if (alloclen > 0) {
939  void *temp_pixels = SDL_malloc(alloclen);
940  if (!temp_pixels) {
941  return SDL_OutOfMemory();
942  }
943  SDL_SW_CopyYUVToRGB(texture->yuv, rect, native->format,
944  rect->w, rect->h, temp_pixels, temp_pitch);
945  SDL_UpdateTexture(native, rect, temp_pixels, temp_pitch);
946  SDL_free(temp_pixels);
947  }
948  }
949  return 0;
950 }
951 
953  const Uint8 *Yplane, int Ypitch,
954  const Uint8 *Uplane, int Upitch,
955  const Uint8 *Vplane, int Vpitch)
956 {
958  SDL_Rect full_rect;
959 
960  CHECK_TEXTURE_MAGIC(texture, -1);
961 
962  if (!Yplane) {
963  return SDL_InvalidParamError("Yplane");
964  }
965  if (!Ypitch) {
966  return SDL_InvalidParamError("Ypitch");
967  }
968  if (!Uplane) {
969  return SDL_InvalidParamError("Uplane");
970  }
971  if (!Upitch) {
972  return SDL_InvalidParamError("Upitch");
973  }
974  if (!Vplane) {
975  return SDL_InvalidParamError("Vplane");
976  }
977  if (!Vpitch) {
978  return SDL_InvalidParamError("Vpitch");
979  }
980 
981  if (texture->format != SDL_PIXELFORMAT_YV12 &&
982  texture->format != SDL_PIXELFORMAT_IYUV) {
983  return SDL_SetError("Texture format must by YV12 or IYUV");
984  }
985 
986  if (!rect) {
987  full_rect.x = 0;
988  full_rect.y = 0;
989  full_rect.w = texture->w;
990  full_rect.h = texture->h;
991  rect = &full_rect;
992  }
993 
994  if (!rect->w || !rect->h) {
995  return 0; /* nothing to do. */
996  }
997 
998  if (texture->yuv) {
999  return SDL_UpdateTextureYUVPlanar(texture, rect, Yplane, Ypitch, Uplane, Upitch, Vplane, Vpitch);
1000  } else {
1001  SDL_assert(!texture->native);
1002  renderer = texture->renderer;
1003  SDL_assert(renderer->UpdateTextureYUV);
1004  if (renderer->UpdateTextureYUV) {
1005  return renderer->UpdateTextureYUV(renderer, texture, rect, Yplane, Ypitch, Uplane, Upitch, Vplane, Vpitch);
1006  } else {
1007  return SDL_Unsupported();
1008  }
1009  }
1010 }
1011 
1012 static int
1014  void **pixels, int *pitch)
1015 {
1016  return SDL_SW_LockYUVTexture(texture->yuv, rect, pixels, pitch);
1017 }
1018 
1019 static int
1021  void **pixels, int *pitch)
1022 {
1023  texture->locked_rect = *rect;
1024  *pixels = (void *) ((Uint8 *) texture->pixels +
1025  rect->y * texture->pitch +
1026  rect->x * SDL_BYTESPERPIXEL(texture->format));
1027  *pitch = texture->pitch;
1028  return 0;
1029 }
1030 
1031 int
1033  void **pixels, int *pitch)
1034 {
1036  SDL_Rect full_rect;
1037 
1038  CHECK_TEXTURE_MAGIC(texture, -1);
1039 
1040  if (texture->access != SDL_TEXTUREACCESS_STREAMING) {
1041  return SDL_SetError("SDL_LockTexture(): texture must be streaming");
1042  }
1043 
1044  if (!rect) {
1045  full_rect.x = 0;
1046  full_rect.y = 0;
1047  full_rect.w = texture->w;
1048  full_rect.h = texture->h;
1049  rect = &full_rect;
1050  }
1051 
1052  if (texture->yuv) {
1053  return SDL_LockTextureYUV(texture, rect, pixels, pitch);
1054  } else if (texture->native) {
1055  return SDL_LockTextureNative(texture, rect, pixels, pitch);
1056  } else {
1057  renderer = texture->renderer;
1058  return renderer->LockTexture(renderer, texture, rect, pixels, pitch);
1059  }
1060 }
1061 
1062 static void
1064 {
1065  SDL_Texture *native = texture->native;
1066  void *native_pixels = NULL;
1067  int native_pitch = 0;
1068  SDL_Rect rect;
1069 
1070  rect.x = 0;
1071  rect.y = 0;
1072  rect.w = texture->w;
1073  rect.h = texture->h;
1074 
1075  if (SDL_LockTexture(native, &rect, &native_pixels, &native_pitch) < 0) {
1076  return;
1077  }
1078  SDL_SW_CopyYUVToRGB(texture->yuv, &rect, native->format,
1079  rect.w, rect.h, native_pixels, native_pitch);
1080  SDL_UnlockTexture(native);
1081 }
1082 
1083 static void
1085 {
1086  SDL_Texture *native = texture->native;
1087  void *native_pixels = NULL;
1088  int native_pitch = 0;
1089  const SDL_Rect *rect = &texture->locked_rect;
1090  const void* pixels = (void *) ((Uint8 *) texture->pixels +
1091  rect->y * texture->pitch +
1092  rect->x * SDL_BYTESPERPIXEL(texture->format));
1093  int pitch = texture->pitch;
1094 
1095  if (SDL_LockTexture(native, rect, &native_pixels, &native_pitch) < 0) {
1096  return;
1097  }
1098  SDL_ConvertPixels(rect->w, rect->h,
1099  texture->format, pixels, pitch,
1100  native->format, native_pixels, native_pitch);
1101  SDL_UnlockTexture(native);
1102 }
1103 
1104 void
1106 {
1108 
1109  CHECK_TEXTURE_MAGIC(texture, );
1110 
1111  if (texture->access != SDL_TEXTUREACCESS_STREAMING) {
1112  return;
1113  }
1114  if (texture->yuv) {
1115  SDL_UnlockTextureYUV(texture);
1116  } else if (texture->native) {
1117  SDL_UnlockTextureNative(texture);
1118  } else {
1119  renderer = texture->renderer;
1120  renderer->UnlockTexture(renderer, texture);
1121  }
1122 }
1123 
1124 SDL_bool
1126 {
1127  if (!renderer || !renderer->SetRenderTarget) {
1128  return SDL_FALSE;
1129  }
1130  return (renderer->info.flags & SDL_RENDERER_TARGETTEXTURE) != 0;
1131 }
1132 
1133 int
1135 {
1136  if (!SDL_RenderTargetSupported(renderer)) {
1137  return SDL_Unsupported();
1138  }
1139  if (texture == renderer->target) {
1140  /* Nothing to do! */
1141  return 0;
1142  }
1143 
1144  /* texture == NULL is valid and means reset the target to the window */
1145  if (texture) {
1146  CHECK_TEXTURE_MAGIC(texture, -1);
1147  if (renderer != texture->renderer) {
1148  return SDL_SetError("Texture was not created with this renderer");
1149  }
1150  if (texture->access != SDL_TEXTUREACCESS_TARGET) {
1151  return SDL_SetError("Texture not created with SDL_TEXTUREACCESS_TARGET");
1152  }
1153  if (texture->native) {
1154  /* Always render to the native texture */
1155  texture = texture->native;
1156  }
1157  }
1158 
1159  if (texture && !renderer->target) {
1160  /* Make a backup of the viewport */
1161  renderer->viewport_backup = renderer->viewport;
1162  renderer->clip_rect_backup = renderer->clip_rect;
1163  renderer->clipping_enabled_backup = renderer->clipping_enabled;
1164  renderer->scale_backup = renderer->scale;
1165  renderer->logical_w_backup = renderer->logical_w;
1166  renderer->logical_h_backup = renderer->logical_h;
1167  }
1168  renderer->target = texture;
1169 
1170  if (renderer->SetRenderTarget(renderer, texture) < 0) {
1171  return -1;
1172  }
1173 
1174  if (texture) {
1175  renderer->viewport.x = 0;
1176  renderer->viewport.y = 0;
1177  renderer->viewport.w = texture->w;
1178  renderer->viewport.h = texture->h;
1179  SDL_zero(renderer->clip_rect);
1180  renderer->clipping_enabled = SDL_FALSE;
1181  renderer->scale.x = 1.0f;
1182  renderer->scale.y = 1.0f;
1183  renderer->logical_w = texture->w;
1184  renderer->logical_h = texture->h;
1185  } else {
1186  renderer->viewport = renderer->viewport_backup;
1187  renderer->clip_rect = renderer->clip_rect_backup;
1188  renderer->clipping_enabled = renderer->clipping_enabled_backup;
1189  renderer->scale = renderer->scale_backup;
1190  renderer->logical_w = renderer->logical_w_backup;
1191  renderer->logical_h = renderer->logical_h_backup;
1192  }
1193  if (renderer->UpdateViewport(renderer) < 0) {
1194  return -1;
1195  }
1196  if (renderer->UpdateClipRect(renderer) < 0) {
1197  return -1;
1198  }
1199 
1200  /* All set! */
1201  return 0;
1202 }
1203 
1204 SDL_Texture *
1206 {
1207  return renderer->target;
1208 }
1209 
1210 static int
1212 {
1213  int w = 1, h = 1;
1214  float want_aspect;
1215  float real_aspect;
1216  float scale;
1218  /* 0 is for letterbox, 1 is for overscan */
1219  int scale_policy = 0;
1220  const char *hint = SDL_GetHint(SDL_HINT_RENDER_LOGICAL_SIZE_MODE);
1221 
1222  if (!renderer->logical_w || !renderer->logical_h) {
1223  return 0;
1224  }
1225  if (SDL_GetRendererOutputSize(renderer, &w, &h) < 0) {
1226  return -1;
1227  }
1228 
1229  if (!hint) {
1230  scale_policy = 0;
1231  } else if ( *hint == '1' || SDL_strcasecmp(hint, "overscan") == 0) {
1232  /* Unfortunately, Direct3D 9 does't support negative viewport numbers
1233  which the main overscan implementation relies on.
1234  D3D11 does support negative values and uses a different id string
1235  so overscan will work for D3D11.
1236  */
1237  if(SDL_strcasecmp("direct3d", SDL_GetCurrentVideoDriver())) {
1238  scale_policy = 0;
1239  } else {
1240  scale_policy = 1;
1241  }
1242  } else {
1243  scale_policy = 0;
1244  }
1245 
1246  want_aspect = (float)renderer->logical_w / renderer->logical_h;
1247  real_aspect = (float)w / h;
1248 
1249  /* Clear the scale because we're setting viewport in output coordinates */
1250  SDL_RenderSetScale(renderer, 1.0f, 1.0f);
1251 
1252  if (renderer->integer_scale) {
1253  if (want_aspect > real_aspect) {
1254  scale = (float)(w / renderer->logical_w);
1255  } else {
1256  scale = (float)(h / renderer->logical_h);
1257  }
1258  viewport.w = (int)SDL_ceil(renderer->logical_w * scale);
1259  viewport.x = (w - viewport.w) / 2;
1260  viewport.h = (int)SDL_ceil(renderer->logical_h * scale);
1261  viewport.y = (h - viewport.h) / 2;
1262 
1263  SDL_RenderSetViewport(renderer, &viewport);
1264  } else if (SDL_fabs(want_aspect-real_aspect) < 0.0001) {
1265  /* The aspect ratios are the same, just scale appropriately */
1266  scale = (float)w / renderer->logical_w;
1267  SDL_RenderSetViewport(renderer, NULL);
1268  } else if (want_aspect > real_aspect) {
1269  if (scale_policy == 1) {
1270  /* We want a wider aspect ratio than is available -
1271  zoom so logical height matches the real height
1272  and the width will grow off the screen
1273  */
1274  scale = (float)h / renderer->logical_h;
1275  viewport.y = 0;
1276  viewport.h = h;
1277  viewport.w = (int)SDL_ceil(renderer->logical_w * scale);
1278  viewport.x = (w - viewport.w) / 2;
1279  SDL_RenderSetViewport(renderer, &viewport);
1280  } else {
1281  /* We want a wider aspect ratio than is available - letterbox it */
1282  scale = (float)w / renderer->logical_w;
1283  viewport.x = 0;
1284  viewport.w = w;
1285  viewport.h = (int)SDL_ceil(renderer->logical_h * scale);
1286  viewport.y = (h - viewport.h) / 2;
1287  SDL_RenderSetViewport(renderer, &viewport);
1288  }
1289  } else {
1290  if (scale_policy == 1) {
1291  /* We want a narrower aspect ratio than is available -
1292  zoom so logical width matches the real width
1293  and the height will grow off the screen
1294  */
1295  scale = (float)w / renderer->logical_w;
1296  viewport.x = 0;
1297  viewport.w = w;
1298  viewport.h = (int)SDL_ceil(renderer->logical_h * scale);
1299  viewport.y = (h - viewport.h) / 2;
1300  SDL_RenderSetViewport(renderer, &viewport);
1301  } else {
1302  /* We want a narrower aspect ratio than is available - use side-bars */
1303  scale = (float)h / renderer->logical_h;
1304  viewport.y = 0;
1305  viewport.h = h;
1306  viewport.w = (int)SDL_ceil(renderer->logical_w * scale);
1307  viewport.x = (w - viewport.w) / 2;
1308  SDL_RenderSetViewport(renderer, &viewport);
1309  }
1310  }
1311 
1312  /* Set the new scale */
1313  SDL_RenderSetScale(renderer, scale, scale);
1314 
1315  return 0;
1316 }
1317 
1318 int
1320 {
1321  CHECK_RENDERER_MAGIC(renderer, -1);
1322 
1323  if (!w || !h) {
1324  /* Clear any previous logical resolution */
1325  renderer->logical_w = 0;
1326  renderer->logical_h = 0;
1327  SDL_RenderSetViewport(renderer, NULL);
1328  SDL_RenderSetScale(renderer, 1.0f, 1.0f);
1329  return 0;
1330  }
1331 
1332  renderer->logical_w = w;
1333  renderer->logical_h = h;
1334 
1335  return UpdateLogicalSize(renderer);
1336 }
1337 
1338 void
1340 {
1341  CHECK_RENDERER_MAGIC(renderer, );
1342 
1343  if (w) {
1344  *w = renderer->logical_w;
1345  }
1346  if (h) {
1347  *h = renderer->logical_h;
1348  }
1349 }
1350 
1351 int
1353 {
1354  CHECK_RENDERER_MAGIC(renderer, -1);
1355 
1356  renderer->integer_scale = enable;
1357 
1358  return UpdateLogicalSize(renderer);
1359 }
1360 
1361 SDL_bool
1363 {
1364  CHECK_RENDERER_MAGIC(renderer, SDL_FALSE);
1365 
1366  return renderer->integer_scale;
1367 }
1368 
1369 int
1371 {
1372  CHECK_RENDERER_MAGIC(renderer, -1);
1373 
1374  if (rect) {
1375  renderer->viewport.x = (int)SDL_floor(rect->x * renderer->scale.x);
1376  renderer->viewport.y = (int)SDL_floor(rect->y * renderer->scale.y);
1377  renderer->viewport.w = (int)SDL_ceil(rect->w * renderer->scale.x);
1378  renderer->viewport.h = (int)SDL_ceil(rect->h * renderer->scale.y);
1379  } else {
1380  renderer->viewport.x = 0;
1381  renderer->viewport.y = 0;
1382  if (SDL_GetRendererOutputSize(renderer, &renderer->viewport.w, &renderer->viewport.h) < 0) {
1383  return -1;
1384  }
1385  }
1386  return renderer->UpdateViewport(renderer);
1387 }
1388 
1389 void
1391 {
1392  CHECK_RENDERER_MAGIC(renderer, );
1393 
1394  if (rect) {
1395  rect->x = (int)(renderer->viewport.x / renderer->scale.x);
1396  rect->y = (int)(renderer->viewport.y / renderer->scale.y);
1397  rect->w = (int)(renderer->viewport.w / renderer->scale.x);
1398  rect->h = (int)(renderer->viewport.h / renderer->scale.y);
1399  }
1400 }
1401 
1402 int
1404 {
1405  CHECK_RENDERER_MAGIC(renderer, -1)
1406 
1407  if (rect) {
1408  renderer->clipping_enabled = SDL_TRUE;
1409  renderer->clip_rect.x = (int)SDL_floor(rect->x * renderer->scale.x);
1410  renderer->clip_rect.y = (int)SDL_floor(rect->y * renderer->scale.y);
1411  renderer->clip_rect.w = (int)SDL_ceil(rect->w * renderer->scale.x);
1412  renderer->clip_rect.h = (int)SDL_ceil(rect->h * renderer->scale.y);
1413  } else {
1414  renderer->clipping_enabled = SDL_FALSE;
1415  SDL_zero(renderer->clip_rect);
1416  }
1417  return renderer->UpdateClipRect(renderer);
1418 }
1419 
1420 void
1422 {
1423  CHECK_RENDERER_MAGIC(renderer, )
1424 
1425  if (rect) {
1426  rect->x = (int)(renderer->clip_rect.x / renderer->scale.x);
1427  rect->y = (int)(renderer->clip_rect.y / renderer->scale.y);
1428  rect->w = (int)(renderer->clip_rect.w / renderer->scale.x);
1429  rect->h = (int)(renderer->clip_rect.h / renderer->scale.y);
1430  }
1431 }
1432 
1433 SDL_bool
1435 {
1436  CHECK_RENDERER_MAGIC(renderer, SDL_FALSE)
1437  return renderer->clipping_enabled;
1438 }
1439 
1440 int
1441 SDL_RenderSetScale(SDL_Renderer * renderer, float scaleX, float scaleY)
1442 {
1443  CHECK_RENDERER_MAGIC(renderer, -1);
1444 
1445  renderer->scale.x = scaleX;
1446  renderer->scale.y = scaleY;
1447  return 0;
1448 }
1449 
1450 void
1451 SDL_RenderGetScale(SDL_Renderer * renderer, float *scaleX, float *scaleY)
1452 {
1453  CHECK_RENDERER_MAGIC(renderer, );
1454 
1455  if (scaleX) {
1456  *scaleX = renderer->scale.x;
1457  }
1458  if (scaleY) {
1459  *scaleY = renderer->scale.y;
1460  }
1461 }
1462 
1463 int
1465  Uint8 r, Uint8 g, Uint8 b, Uint8 a)
1466 {
1467  CHECK_RENDERER_MAGIC(renderer, -1);
1468 
1469  renderer->r = r;
1470  renderer->g = g;
1471  renderer->b = b;
1472  renderer->a = a;
1473  return 0;
1474 }
1475 
1476 int
1478  Uint8 * r, Uint8 * g, Uint8 * b, Uint8 * a)
1479 {
1480  CHECK_RENDERER_MAGIC(renderer, -1);
1481 
1482  if (r) {
1483  *r = renderer->r;
1484  }
1485  if (g) {
1486  *g = renderer->g;
1487  }
1488  if (b) {
1489  *b = renderer->b;
1490  }
1491  if (a) {
1492  *a = renderer->a;
1493  }
1494  return 0;
1495 }
1496 
1497 int
1499 {
1500  CHECK_RENDERER_MAGIC(renderer, -1);
1501 
1502  if (!IsSupportedBlendMode(renderer, blendMode)) {
1503  return SDL_Unsupported();
1504  }
1505  renderer->blendMode = blendMode;
1506  return 0;
1507 }
1508 
1509 int
1511 {
1512  CHECK_RENDERER_MAGIC(renderer, -1);
1513 
1514  *blendMode = renderer->blendMode;
1515  return 0;
1516 }
1517 
1518 int
1520 {
1521  CHECK_RENDERER_MAGIC(renderer, -1);
1522 
1523  /* Don't draw while we're hidden */
1524  if (renderer->hidden) {
1525  return 0;
1526  }
1527  return renderer->RenderClear(renderer);
1528 }
1529 
1530 int
1532 {
1533  SDL_Point point;
1534 
1535  point.x = x;
1536  point.y = y;
1537  return SDL_RenderDrawPoints(renderer, &point, 1);
1538 }
1539 
1540 static int
1542  const SDL_Point * points, int count)
1543 {
1544  SDL_FRect *frects;
1545  int i;
1546  int status;
1547 
1548  frects = SDL_stack_alloc(SDL_FRect, count);
1549  if (!frects) {
1550  return SDL_OutOfMemory();
1551  }
1552  for (i = 0; i < count; ++i) {
1553  frects[i].x = points[i].x * renderer->scale.x;
1554  frects[i].y = points[i].y * renderer->scale.y;
1555  frects[i].w = renderer->scale.x;
1556  frects[i].h = renderer->scale.y;
1557  }
1558 
1559  status = renderer->RenderFillRects(renderer, frects, count);
1560 
1561  SDL_stack_free(frects);
1562 
1563  return status;
1564 }
1565 
1566 int
1568  const SDL_Point * points, int count)
1569 {
1570  SDL_FPoint *fpoints;
1571  int i;
1572  int status;
1573 
1574  CHECK_RENDERER_MAGIC(renderer, -1);
1575 
1576  if (!points) {
1577  return SDL_SetError("SDL_RenderDrawPoints(): Passed NULL points");
1578  }
1579  if (count < 1) {
1580  return 0;
1581  }
1582 
1583  /* Don't draw while we're hidden */
1584  if (renderer->hidden) {
1585  return 0;
1586  }
1587 
1588  if (renderer->scale.x != 1.0f || renderer->scale.y != 1.0f) {
1589  return RenderDrawPointsWithRects(renderer, points, count);
1590  }
1591 
1592  fpoints = SDL_stack_alloc(SDL_FPoint, count);
1593  if (!fpoints) {
1594  return SDL_OutOfMemory();
1595  }
1596  for (i = 0; i < count; ++i) {
1597  fpoints[i].x = points[i].x * renderer->scale.x;
1598  fpoints[i].y = points[i].y * renderer->scale.y;
1599  }
1600 
1601  status = renderer->RenderDrawPoints(renderer, fpoints, count);
1602 
1603  SDL_stack_free(fpoints);
1604 
1605  return status;
1606 }
1607 
1608 int
1610 {
1611  SDL_Point points[2];
1612 
1613  points[0].x = x1;
1614  points[0].y = y1;
1615  points[1].x = x2;
1616  points[1].y = y2;
1617  return SDL_RenderDrawLines(renderer, points, 2);
1618 }
1619 
1620 static int
1622  const SDL_Point * points, int count)
1623 {
1624  SDL_FRect *frect;
1625  SDL_FRect *frects;
1626  SDL_FPoint fpoints[2];
1627  int i, nrects;
1628  int status;
1629 
1630  frects = SDL_stack_alloc(SDL_FRect, count-1);
1631  if (!frects) {
1632  return SDL_OutOfMemory();
1633  }
1634 
1635  status = 0;
1636  nrects = 0;
1637  for (i = 0; i < count-1; ++i) {
1638  if (points[i].x == points[i+1].x) {
1639  int minY = SDL_min(points[i].y, points[i+1].y);
1640  int maxY = SDL_max(points[i].y, points[i+1].y);
1641 
1642  frect = &frects[nrects++];
1643  frect->x = points[i].x * renderer->scale.x;
1644  frect->y = minY * renderer->scale.y;
1645  frect->w = renderer->scale.x;
1646  frect->h = (maxY - minY + 1) * renderer->scale.y;
1647  } else if (points[i].y == points[i+1].y) {
1648  int minX = SDL_min(points[i].x, points[i+1].x);
1649  int maxX = SDL_max(points[i].x, points[i+1].x);
1650 
1651  frect = &frects[nrects++];
1652  frect->x = minX * renderer->scale.x;
1653  frect->y = points[i].y * renderer->scale.y;
1654  frect->w = (maxX - minX + 1) * renderer->scale.x;
1655  frect->h = renderer->scale.y;
1656  } else {
1657  /* FIXME: We can't use a rect for this line... */
1658  fpoints[0].x = points[i].x * renderer->scale.x;
1659  fpoints[0].y = points[i].y * renderer->scale.y;
1660  fpoints[1].x = points[i+1].x * renderer->scale.x;
1661  fpoints[1].y = points[i+1].y * renderer->scale.y;
1662  status += renderer->RenderDrawLines(renderer, fpoints, 2);
1663  }
1664  }
1665 
1666  status += renderer->RenderFillRects(renderer, frects, nrects);
1667 
1668  SDL_stack_free(frects);
1669 
1670  if (status < 0) {
1671  status = -1;
1672  }
1673  return status;
1674 }
1675 
1676 int
1678  const SDL_Point * points, int count)
1679 {
1680  SDL_FPoint *fpoints;
1681  int i;
1682  int status;
1683 
1684  CHECK_RENDERER_MAGIC(renderer, -1);
1685 
1686  if (!points) {
1687  return SDL_SetError("SDL_RenderDrawLines(): Passed NULL points");
1688  }
1689  if (count < 2) {
1690  return 0;
1691  }
1692 
1693  /* Don't draw while we're hidden */
1694  if (renderer->hidden) {
1695  return 0;
1696  }
1697 
1698  if (renderer->scale.x != 1.0f || renderer->scale.y != 1.0f) {
1699  return RenderDrawLinesWithRects(renderer, points, count);
1700  }
1701 
1702  fpoints = SDL_stack_alloc(SDL_FPoint, count);
1703  if (!fpoints) {
1704  return SDL_OutOfMemory();
1705  }
1706  for (i = 0; i < count; ++i) {
1707  fpoints[i].x = points[i].x * renderer->scale.x;
1708  fpoints[i].y = points[i].y * renderer->scale.y;
1709  }
1710 
1711  status = renderer->RenderDrawLines(renderer, fpoints, count);
1712 
1713  SDL_stack_free(fpoints);
1714 
1715  return status;
1716 }
1717 
1718 int
1720 {
1721  SDL_Rect full_rect;
1722  SDL_Point points[5];
1723 
1724  CHECK_RENDERER_MAGIC(renderer, -1);
1725 
1726  /* If 'rect' == NULL, then outline the whole surface */
1727  if (!rect) {
1728  SDL_RenderGetViewport(renderer, &full_rect);
1729  full_rect.x = 0;
1730  full_rect.y = 0;
1731  rect = &full_rect;
1732  }
1733 
1734  points[0].x = rect->x;
1735  points[0].y = rect->y;
1736  points[1].x = rect->x+rect->w-1;
1737  points[1].y = rect->y;
1738  points[2].x = rect->x+rect->w-1;
1739  points[2].y = rect->y+rect->h-1;
1740  points[3].x = rect->x;
1741  points[3].y = rect->y+rect->h-1;
1742  points[4].x = rect->x;
1743  points[4].y = rect->y;
1744  return SDL_RenderDrawLines(renderer, points, 5);
1745 }
1746 
1747 int
1749  const SDL_Rect * rects, int count)
1750 {
1751  int i;
1752 
1753  CHECK_RENDERER_MAGIC(renderer, -1);
1754 
1755  if (!rects) {
1756  return SDL_SetError("SDL_RenderDrawRects(): Passed NULL rects");
1757  }
1758  if (count < 1) {
1759  return 0;
1760  }
1761 
1762  /* Don't draw while we're hidden */
1763  if (renderer->hidden) {
1764  return 0;
1765  }
1766 
1767  for (i = 0; i < count; ++i) {
1768  if (SDL_RenderDrawRect(renderer, &rects[i]) < 0) {
1769  return -1;
1770  }
1771  }
1772  return 0;
1773 }
1774 
1775 int
1777 {
1778  SDL_Rect full_rect = { 0, 0, 0, 0 };
1779 
1780  CHECK_RENDERER_MAGIC(renderer, -1);
1781 
1782  /* If 'rect' == NULL, then outline the whole surface */
1783  if (!rect) {
1784  SDL_RenderGetViewport(renderer, &full_rect);
1785  full_rect.x = 0;
1786  full_rect.y = 0;
1787  rect = &full_rect;
1788  }
1789  return SDL_RenderFillRects(renderer, rect, 1);
1790 }
1791 
1792 int
1794  const SDL_Rect * rects, int count)
1795 {
1796  SDL_FRect *frects;
1797  int i;
1798  int status;
1799 
1800  CHECK_RENDERER_MAGIC(renderer, -1);
1801 
1802  if (!rects) {
1803  return SDL_SetError("SDL_RenderFillRects(): Passed NULL rects");
1804  }
1805  if (count < 1) {
1806  return 0;
1807  }
1808 
1809  /* Don't draw while we're hidden */
1810  if (renderer->hidden) {
1811  return 0;
1812  }
1813 
1814  frects = SDL_stack_alloc(SDL_FRect, count);
1815  if (!frects) {
1816  return SDL_OutOfMemory();
1817  }
1818  for (i = 0; i < count; ++i) {
1819  frects[i].x = rects[i].x * renderer->scale.x;
1820  frects[i].y = rects[i].y * renderer->scale.y;
1821  frects[i].w = rects[i].w * renderer->scale.x;
1822  frects[i].h = rects[i].h * renderer->scale.y;
1823  }
1824 
1825  status = renderer->RenderFillRects(renderer, frects, count);
1826 
1827  SDL_stack_free(frects);
1828 
1829  return status;
1830 }
1831 
1832 int
1834  const SDL_Rect * srcrect, const SDL_Rect * dstrect)
1835 {
1836  SDL_Rect real_srcrect = { 0, 0, 0, 0 };
1837  SDL_Rect real_dstrect = { 0, 0, 0, 0 };
1838  SDL_FRect frect;
1839 
1840  CHECK_RENDERER_MAGIC(renderer, -1);
1841  CHECK_TEXTURE_MAGIC(texture, -1);
1842 
1843  if (renderer != texture->renderer) {
1844  return SDL_SetError("Texture was not created with this renderer");
1845  }
1846 
1847  /* Don't draw while we're hidden */
1848  if (renderer->hidden) {
1849  return 0;
1850  }
1851 
1852  real_srcrect.x = 0;
1853  real_srcrect.y = 0;
1854  real_srcrect.w = texture->w;
1855  real_srcrect.h = texture->h;
1856  if (srcrect) {
1857  if (!SDL_IntersectRect(srcrect, &real_srcrect, &real_srcrect)) {
1858  return 0;
1859  }
1860  }
1861 
1862  SDL_RenderGetViewport(renderer, &real_dstrect);
1863  real_dstrect.x = 0;
1864  real_dstrect.y = 0;
1865  if (dstrect) {
1866  if (!SDL_HasIntersection(dstrect, &real_dstrect)) {
1867  return 0;
1868  }
1869  real_dstrect = *dstrect;
1870  }
1871 
1872  if (texture->native) {
1873  texture = texture->native;
1874  }
1875 
1876  frect.x = real_dstrect.x * renderer->scale.x;
1877  frect.y = real_dstrect.y * renderer->scale.y;
1878  frect.w = real_dstrect.w * renderer->scale.x;
1879  frect.h = real_dstrect.h * renderer->scale.y;
1880 
1881  return renderer->RenderCopy(renderer, texture, &real_srcrect, &frect);
1882 }
1883 
1884 
1885 int
1887  const SDL_Rect * srcrect, const SDL_Rect * dstrect,
1888  const double angle, const SDL_Point *center, const SDL_RendererFlip flip)
1889 {
1890  SDL_Rect real_srcrect = { 0, 0, 0, 0 };
1891  SDL_Rect real_dstrect = { 0, 0, 0, 0 };
1892  SDL_Point real_center;
1893  SDL_FRect frect;
1894  SDL_FPoint fcenter;
1895 
1896  if (flip == SDL_FLIP_NONE && (int)(angle/360) == angle/360) { /* fast path when we don't need rotation or flipping */
1897  return SDL_RenderCopy(renderer, texture, srcrect, dstrect);
1898  }
1899 
1900  CHECK_RENDERER_MAGIC(renderer, -1);
1901  CHECK_TEXTURE_MAGIC(texture, -1);
1902 
1903  if (renderer != texture->renderer) {
1904  return SDL_SetError("Texture was not created with this renderer");
1905  }
1906  if (!renderer->RenderCopyEx) {
1907  return SDL_SetError("Renderer does not support RenderCopyEx");
1908  }
1909 
1910  /* Don't draw while we're hidden */
1911  if (renderer->hidden) {
1912  return 0;
1913  }
1914 
1915  real_srcrect.x = 0;
1916  real_srcrect.y = 0;
1917  real_srcrect.w = texture->w;
1918  real_srcrect.h = texture->h;
1919  if (srcrect) {
1920  if (!SDL_IntersectRect(srcrect, &real_srcrect, &real_srcrect)) {
1921  return 0;
1922  }
1923  }
1924 
1925  /* We don't intersect the dstrect with the viewport as RenderCopy does because of potential rotation clipping issues... TODO: should we? */
1926  if (dstrect) {
1927  real_dstrect = *dstrect;
1928  } else {
1929  SDL_RenderGetViewport(renderer, &real_dstrect);
1930  real_dstrect.x = 0;
1931  real_dstrect.y = 0;
1932  }
1933 
1934  if (texture->native) {
1935  texture = texture->native;
1936  }
1937 
1938  if (center) {
1939  real_center = *center;
1940  } else {
1941  real_center.x = real_dstrect.w/2;
1942  real_center.y = real_dstrect.h/2;
1943  }
1944 
1945  frect.x = real_dstrect.x * renderer->scale.x;
1946  frect.y = real_dstrect.y * renderer->scale.y;
1947  frect.w = real_dstrect.w * renderer->scale.x;
1948  frect.h = real_dstrect.h * renderer->scale.y;
1949 
1950  fcenter.x = real_center.x * renderer->scale.x;
1951  fcenter.y = real_center.y * renderer->scale.y;
1952 
1953  return renderer->RenderCopyEx(renderer, texture, &real_srcrect, &frect, angle, &fcenter, flip);
1954 }
1955 
1956 int
1958  Uint32 format, void * pixels, int pitch)
1959 {
1960  SDL_Rect real_rect;
1961 
1962  CHECK_RENDERER_MAGIC(renderer, -1);
1963 
1964  if (!renderer->RenderReadPixels) {
1965  return SDL_Unsupported();
1966  }
1967 
1968  if (!format) {
1969  format = SDL_GetWindowPixelFormat(renderer->window);
1970  }
1971 
1972  real_rect.x = renderer->viewport.x;
1973  real_rect.y = renderer->viewport.y;
1974  real_rect.w = renderer->viewport.w;
1975  real_rect.h = renderer->viewport.h;
1976  if (rect) {
1977  if (!SDL_IntersectRect(rect, &real_rect, &real_rect)) {
1978  return 0;
1979  }
1980  if (real_rect.y > rect->y) {
1981  pixels = (Uint8 *)pixels + pitch * (real_rect.y - rect->y);
1982  }
1983  if (real_rect.x > rect->x) {
1984  int bpp = SDL_BYTESPERPIXEL(format);
1985  pixels = (Uint8 *)pixels + bpp * (real_rect.x - rect->x);
1986  }
1987  }
1988 
1989  return renderer->RenderReadPixels(renderer, &real_rect,
1990  format, pixels, pitch);
1991 }
1992 
1993 void
1995 {
1996  CHECK_RENDERER_MAGIC(renderer, );
1997 
1998  /* Don't draw while we're hidden */
1999  if (renderer->hidden) {
2000  return;
2001  }
2002  renderer->RenderPresent(renderer);
2003 }
2004 
2005 void
2007 {
2009 
2010  CHECK_TEXTURE_MAGIC(texture, );
2011 
2012  renderer = texture->renderer;
2013  if (texture == renderer->target) {
2014  SDL_SetRenderTarget(renderer, NULL);
2015  }
2016 
2017  texture->magic = NULL;
2018 
2019  if (texture->next) {
2020  texture->next->prev = texture->prev;
2021  }
2022  if (texture->prev) {
2023  texture->prev->next = texture->next;
2024  } else {
2025  renderer->textures = texture->next;
2026  }
2027 
2028  if (texture->native) {
2029  SDL_DestroyTexture(texture->native);
2030  }
2031  if (texture->yuv) {
2032  SDL_SW_DestroyYUVTexture(texture->yuv);
2033  }
2034  SDL_free(texture->pixels);
2035 
2036  renderer->DestroyTexture(renderer, texture);
2037  SDL_free(texture);
2038 }
2039 
2040 void
2042 {
2043  CHECK_RENDERER_MAGIC(renderer, );
2044 
2046 
2047  /* Free existing textures for this renderer */
2048  while (renderer->textures) {
2049  SDL_Texture *tex = renderer->textures; (void) tex;
2050  SDL_DestroyTexture(renderer->textures);
2051  SDL_assert(tex != renderer->textures); /* satisfy static analysis. */
2052  }
2053 
2054  if (renderer->window) {
2056  }
2057 
2058  /* It's no longer magical... */
2059  renderer->magic = NULL;
2060 
2061  /* Free the renderer instance */
2062  renderer->DestroyRenderer(renderer);
2063 }
2064 
2065 int SDL_GL_BindTexture(SDL_Texture *texture, float *texw, float *texh)
2066 {
2068 
2069  CHECK_TEXTURE_MAGIC(texture, -1);
2070  renderer = texture->renderer;
2071  if (texture->native) {
2072  return SDL_GL_BindTexture(texture->native, texw, texh);
2073  } else if (renderer && renderer->GL_BindTexture) {
2074  return renderer->GL_BindTexture(renderer, texture, texw, texh);
2075  } else {
2076  return SDL_Unsupported();
2077  }
2078 }
2079 
2081 {
2083 
2084  CHECK_TEXTURE_MAGIC(texture, -1);
2085  renderer = texture->renderer;
2086  if (texture->native) {
2087  return SDL_GL_UnbindTexture(texture->native);
2088  } else if (renderer && renderer->GL_UnbindTexture) {
2089  return renderer->GL_UnbindTexture(renderer, texture);
2090  }
2091 
2092  return SDL_Unsupported();
2093 }
2094 
2095 static SDL_BlendMode
2097 {
2098  if (blendMode == SDL_BLENDMODE_NONE_FULL) {
2099  return SDL_BLENDMODE_NONE;
2100  }
2101  if (blendMode == SDL_BLENDMODE_BLEND_FULL) {
2102  return SDL_BLENDMODE_BLEND;
2103  }
2104  if (blendMode == SDL_BLENDMODE_ADD_FULL) {
2105  return SDL_BLENDMODE_ADD;
2106  }
2107  if (blendMode == SDL_BLENDMODE_MOD_FULL) {
2108  return SDL_BLENDMODE_MOD;
2109  }
2110  return blendMode;
2111 }
2112 
2113 static SDL_BlendMode
2115 {
2116  if (blendMode == SDL_BLENDMODE_NONE) {
2117  return SDL_BLENDMODE_NONE_FULL;
2118  }
2119  if (blendMode == SDL_BLENDMODE_BLEND) {
2120  return SDL_BLENDMODE_BLEND_FULL;
2121  }
2122  if (blendMode == SDL_BLENDMODE_ADD) {
2123  return SDL_BLENDMODE_ADD_FULL;
2124  }
2125  if (blendMode == SDL_BLENDMODE_MOD) {
2126  return SDL_BLENDMODE_MOD_FULL;
2127  }
2128  return blendMode;
2129 }
2130 
2133  SDL_BlendOperation colorOperation,
2134  SDL_BlendFactor srcAlphaFactor, SDL_BlendFactor dstAlphaFactor,
2135  SDL_BlendOperation alphaOperation)
2136 {
2137  SDL_BlendMode blendMode = SDL_COMPOSE_BLENDMODE(srcColorFactor, dstColorFactor, colorOperation,
2138  srcAlphaFactor, dstAlphaFactor, alphaOperation);
2139  return SDL_GetShortBlendMode(blendMode);
2140 }
2141 
2144 {
2145  blendMode = SDL_GetLongBlendMode(blendMode);
2146  return (SDL_BlendFactor)(((Uint32)blendMode >> 4) & 0xF);
2147 }
2148 
2151 {
2152  blendMode = SDL_GetLongBlendMode(blendMode);
2153  return (SDL_BlendFactor)(((Uint32)blendMode >> 8) & 0xF);
2154 }
2155 
2158 {
2159  blendMode = SDL_GetLongBlendMode(blendMode);
2160  return (SDL_BlendOperation)(((Uint32)blendMode >> 0) & 0xF);
2161 }
2162 
2165 {
2166  blendMode = SDL_GetLongBlendMode(blendMode);
2167  return (SDL_BlendFactor)(((Uint32)blendMode >> 20) & 0xF);
2168 }
2169 
2172 {
2173  blendMode = SDL_GetLongBlendMode(blendMode);
2174  return (SDL_BlendFactor)(((Uint32)blendMode >> 24) & 0xF);
2175 }
2176 
2179 {
2180  blendMode = SDL_GetLongBlendMode(blendMode);
2181  return (SDL_BlendOperation)(((Uint32)blendMode >> 16) & 0xF);
2182 }
2183 
2184 /* vi: set ts=4 sw=4 expandtab: */
SDL_BlendFactor SDL_GetBlendModeSrcColorFactor(SDL_BlendMode blendMode)
Definition: SDL_render.c:2143
SDL_BlendFactor
The normalized factor used to multiply pixel components.
Definition: SDL_blendmode.h:75
int SDL_CreateWindowAndRenderer(int width, int height, Uint32 window_flags, SDL_Window **window, SDL_Renderer **renderer)
Create a window and default renderer.
Definition: SDL_render.c:227
int(* RenderDrawLines)(SDL_Renderer *renderer, const SDL_FPoint *points, int count)
void * pixels
Definition: SDL_sysrender.h:65
GLenum GLenum GLenum GLenum GLenum scale
SDL_BlendMode blendMode
Definition: SDL_sysrender.h:57
SDL_MouseMotionEvent motion
Definition: SDL_events.h:533
#define SDL_DelEventWatch
GLdouble GLdouble GLdouble r
Definition: SDL_opengl.h:2079
#define SDL_GetWindowData
int(* RenderDrawPoints)(SDL_Renderer *renderer, const SDL_FPoint *points, int count)
int(* LockTexture)(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *rect, void **pixels, int *pitch)
Definition: SDL_sysrender.h:98
#define SDL_HasIntersection
GLuint GLfloat GLfloat GLfloat x1
SDL_SW_YUVTexture * SDL_SW_CreateYUVTexture(Uint32 format, int w, int h)
Definition: SDL_yuv_sw.c:1036
#define SDL_min(x, y)
Definition: SDL_stdinc.h:359
#define SDL_UnlockSurface
#define SDL_ceil
static Uint32 GetClosestSupportedFormat(SDL_Renderer *renderer, Uint32 format)
Definition: SDL_render.c:440
static int SDL_UpdateTextureYUVPlanar(SDL_Texture *texture, const SDL_Rect *rect, const Uint8 *Yplane, int Ypitch, const Uint8 *Uplane, int Upitch, const Uint8 *Vplane, int Vpitch)
Definition: SDL_render.c:901
int SDL_RenderCopy(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *srcrect, const SDL_Rect *dstrect)
Copy a portion of the texture to the current rendering target.
Definition: SDL_render.c:1833
#define SDL_HINT_RENDER_VSYNC
A variable controlling whether updates to the SDL screen surface should be synchronized with the vert...
Definition: SDL_hints.h:153
int(* RenderReadPixels)(SDL_Renderer *renderer, const SDL_Rect *rect, Uint32 format, void *pixels, int pitch)
int SDL_SetRenderDrawBlendMode(SDL_Renderer *renderer, SDL_BlendMode blendMode)
Set the blend mode used for drawing operations (Fill and Line).
Definition: SDL_render.c:1498
SDL_RendererInfo info
int SDL_GetRendererInfo(SDL_Renderer *renderer, SDL_RendererInfo *info)
Get information about a rendering context.
Definition: SDL_render.c:383
SDL_Rect clip_rect_backup
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1574
#define SDL_ISPIXELFORMAT_INDEXED(format)
Definition: SDL_pixels.h:134
SDL_RenderDriver GLES_RenderDriver
SDL_BlendMode
The blend mode used in SDL_RenderCopy() and drawing operations.
Definition: SDL_blendmode.h:40
SDL_bool(* SupportsBlendMode)(SDL_Renderer *renderer, SDL_BlendMode blendMode)
Definition: SDL_sysrender.h:82
SDL_RenderDriver DirectFB_RenderDriver
#define SDL_ConvertSurface
GLuint GLuint GLsizei count
Definition: SDL_opengl.h:1571
SDL_Rect rect
Definition: testrelative.c:27
#define SDL_fabs
SDL_RenderDriver D3D11_RenderDriver
SDL_bool hidden
GLfloat GLfloat GLfloat GLfloat h
SDL_Texture * SDL_GetRenderTarget(SDL_Renderer *renderer)
Get the current render target or NULL for the default render target.
Definition: SDL_render.c:1205
GLfixed GLfixed GLfixed y2
SDL_RenderDriver PSP_RenderDriver
EGLSurface surface
Definition: eglext.h:248
The structure that defines a point.
Definition: SDL_rect.h:48
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
SDL_FPoint scale
Uint32 texture_formats[16]
Definition: SDL_render.h:83
SDL_BlendFactor SDL_GetBlendModeDstAlphaFactor(SDL_BlendMode blendMode)
Definition: SDL_render.c:2171
#define SDL_GetHint
#define SDL_GetWindowFlags
int SDL_SW_LockYUVTexture(SDL_SW_YUVTexture *swdata, const SDL_Rect *rect, void **pixels, int *pitch)
Definition: SDL_yuv_sw.c:1258
int SDL_GetRenderDrawColor(SDL_Renderer *renderer, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a)
Get the color used for drawing operations (Rect, Line and Clear).
Definition: SDL_render.c:1477
SDL_BlendOperation SDL_GetBlendModeColorOperation(SDL_BlendMode blendMode)
Definition: SDL_render.c:2157
GLfloat f
SDL_BlendMode SDL_ComposeCustomBlendMode(SDL_BlendFactor srcColorFactor, SDL_BlendFactor dstColorFactor, SDL_BlendOperation colorOperation, SDL_BlendFactor srcAlphaFactor, SDL_BlendFactor dstAlphaFactor, SDL_BlendOperation alphaOperation)
Create a custom blend mode, which may or may not be supported by a given renderer.
Definition: SDL_render.c:2132
#define SDL_BYTESPERPIXEL(X)
Definition: SDL_pixels.h:128
SDL_Rect locked_rect
Definition: SDL_sysrender.h:67
int(* RenderFillRects)(SDL_Renderer *renderer, const SDL_FRect *rects, int count)
#define SDL_CreateWindow
static int SDL_UpdateTextureNative(SDL_Texture *texture, const SDL_Rect *rect, const void *pixels, int pitch)
Definition: SDL_render.c:824
int SDL_RenderDrawPoint(SDL_Renderer *renderer, int x, int y)
Draw a point on the current rendering target.
Definition: SDL_render.c:1531
#define SDL_AllocFormat
#define SDL_WINDOWPOS_UNDEFINED
Definition: SDL_video.h:128
SDL_RenderDriver GL_RenderDriver
#define SDL_ISPIXELFORMAT_ALPHA(format)
Definition: SDL_pixels.h:154
SDL_Rect clip_rect
static int RenderDrawPointsWithRects(SDL_Renderer *renderer, const SDL_Point *points, int count)
Definition: SDL_render.c:1541
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:169
#define SDL_InvalidParamError(param)
Definition: SDL_error.h:54
int SDL_RenderSetViewport(SDL_Renderer *renderer, const SDL_Rect *rect)
Set the drawing area for rendering on the current target.
Definition: SDL_render.c:1370
#define SDL_strcasecmp
void SDL_RenderPresent(SDL_Renderer *renderer)
Update the screen with rendering performed.
Definition: SDL_render.c:1994
const char * name
Definition: SDL_render.h:80
int SDL_RenderReadPixels(SDL_Renderer *renderer, const SDL_Rect *rect, Uint32 format, void *pixels, int pitch)
Read pixels from the current rendering target.
Definition: SDL_render.c:1957
#define SDL_IntersectRect
SDL_Texture * textures
#define SDL_floor
int max_texture_height
Definition: SDL_render.h:85
SDL_BlendOperation
The blend operation used when combining source and destination pixel components.
Definition: SDL_blendmode.h:62
static char texture_magic
Definition: SDL_render.c:103
SDL_Window * window
void SDL_RenderGetLogicalSize(SDL_Renderer *renderer, int *w, int *h)
Get device independent resolution for rendering.
Definition: SDL_render.c:1339
SDL_RendererInfo info
int SDL_GetRendererOutputSize(SDL_Renderer *renderer, int *w, int *h)
Get the output size in pixels of a rendering context.
Definition: SDL_render.c:392
#define SDL_max(x, y)
Definition: SDL_stdinc.h:360
GLfixed GLfixed x2
static int SDL_LockTextureYUV(SDL_Texture *texture, const SDL_Rect *rect, void **pixels, int *pitch)
Definition: SDL_render.c:1013
int(* RenderClear)(SDL_Renderer *renderer)
GLfloat GLfloat GLfloat alpha
GLuint GLint GLboolean GLint GLenum access
static int RenderDrawLinesWithRects(SDL_Renderer *renderer, const SDL_Point *points, int count)
Definition: SDL_render.c:1621
int SDL_RenderFillRect(SDL_Renderer *renderer, const SDL_Rect *rect)
Fill a rectangle on the current rendering target with the drawing color.
Definition: SDL_render.c:1776
void(* DestroyRenderer)(SDL_Renderer *renderer)
GLint GLint GLsizei width
Definition: SDL_opengl.h:1572
GLfixed GLfixed GLint GLint GLfixed points
int(* GetOutputSize)(SDL_Renderer *renderer, int *w, int *h)
Definition: SDL_sysrender.h:81
int(* SetTextureBlendMode)(SDL_Renderer *renderer, SDL_Texture *texture)
Definition: SDL_sysrender.h:88
int SDL_QueryTexture(SDL_Texture *texture, Uint32 *format, int *access, int *w, int *h)
Query the attributes of a texture.
Definition: SDL_render.c:648
#define SDL_GetHintBoolean
GLfixed y1
#define SDL_GetSurfaceBlendMode
SDL_Renderer * SW_CreateRendererForSurface(SDL_Surface *surface)
SDL_FPoint scale_backup
static void SDL_UnlockTextureNative(SDL_Texture *texture)
Definition: SDL_render.c:1084
static SDL_BlendMode blendMode
Definition: testdraw2.c:34
int SDL_GetTextureBlendMode(SDL_Texture *texture, SDL_BlendMode *blendMode)
Get the blend mode used for texture copy operations.
Definition: SDL_render.c:767
#define SDL_SetWindowData
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: SDL_opengl.h:1572
SDL_WindowEvent window
Definition: SDL_events.h:529
static SDL_BlendMode SDL_GetShortBlendMode(SDL_BlendMode blendMode)
Definition: SDL_render.c:2096
SDL_Renderer * SDL_CreateSoftwareRenderer(SDL_Surface *surface)
Create a 2D software rendering context for a surface.
Definition: SDL_render.c:355
int(* UpdateTexture)(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *rect, const void *pixels, int pitch)
Definition: SDL_sysrender.h:90
int SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture *swdata, const SDL_Rect *rect, const void *pixels, int pitch)
Definition: SDL_yuv_sw.c:1129
int x
Definition: SDL_rect.h:50
int(* UpdateTextureYUV)(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *rect, const Uint8 *Yplane, int Ypitch, const Uint8 *Uplane, int Upitch, const Uint8 *Vplane, int Vpitch)
Definition: SDL_sysrender.h:93
#define SDL_GetWindowSize
int SDL_SetTextureBlendMode(SDL_Texture *texture, SDL_BlendMode blendMode)
Set the blend mode used for texture copy operations.
Definition: SDL_render.c:746
int(* SetTextureColorMod)(SDL_Renderer *renderer, SDL_Texture *texture)
Definition: SDL_sysrender.h:84
SDL_RenderDriver GLES2_RenderDriver
SDL_Texture * next
Definition: SDL_sysrender.h:72
GLenum GLenum GLuint texture
void * SDL_calloc(size_t nmemb, size_t size)
#define CHECK_RENDERER_MAGIC(renderer, retval)
Definition: SDL_render.c:35
SDL_BlendOperation SDL_GetBlendModeAlphaOperation(SDL_BlendMode blendMode)
Definition: SDL_render.c:2178
void SDL_DestroyTexture(SDL_Texture *texture)
Destroy the specified texture.
Definition: SDL_render.c:2006
SDL_Texture * prev
Definition: SDL_sysrender.h:71
GLfloat minY
Definition: gl2ext.h:446
void SDL_DestroyRenderer(SDL_Renderer *renderer)
Destroy the rendering context for a window and free associated textures.
Definition: SDL_render.c:2041
SDL_RenderDriver SW_RenderDriver
Definition: SDL_render_sw.c:78
int SDL_RenderDrawRects(SDL_Renderer *renderer, const SDL_Rect *rects, int count)
Draw some number of rectangles on the current rendering target.
Definition: SDL_render.c:1748
SDL_Texture * target
int y
Definition: SDL_rect.h:51
void * pixels
Definition: SDL_surface.h:75
#define SDL_GetColorKey
#define SDL_FreeSurface
static SDL_Renderer * renderer
int SDL_RenderDrawPoints(SDL_Renderer *renderer, const SDL_Point *points, int count)
Draw multiple points on the current rendering target.
Definition: SDL_render.c:1567
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:153
#define SDL_stack_alloc(type, count)
Definition: SDL_stdinc.h:338
struct _cl_event * event
SDL_SW_YUVTexture * yuv
Definition: SDL_sysrender.h:64
void SDL_UnlockTexture(SDL_Texture *texture)
Unlock a texture, uploading the changes to video memory, if needed.
Definition: SDL_render.c:1105
SDL_BlendMode blendMode
void SDL_free(void *mem)
int SDL_LockTexture(SDL_Texture *texture, const SDL_Rect *rect, void **pixels, int *pitch)
Lock a portion of the texture for write-only pixel access.
Definition: SDL_render.c:1032
int SDL_GetRenderDrawBlendMode(SDL_Renderer *renderer, SDL_BlendMode *blendMode)
Get the blend mode used for drawing operations.
Definition: SDL_render.c:1510
SDL_Texture * SDL_CreateTextureFromSurface(SDL_Renderer *renderer, SDL_Surface *surface)
Create a texture from an existing surface.
Definition: SDL_render.c:560
#define SDL_BLENDMODE_BLEND_FULL
Definition: SDL_render.c:63
#define SDL_FreeFormat
int SDL_RenderSetIntegerScale(SDL_Renderer *renderer, SDL_bool enable)
Set whether to force integer scales for resolution-independent rendering.
Definition: SDL_render.c:1352
GLfloat GLfloat GLfloat GLfloat maxX
Definition: gl2ext.h:446
int(* GL_BindTexture)(SDL_Renderer *renderer, SDL_Texture *texture, float *texw, float *texh)
GLubyte GLubyte GLubyte GLubyte w
void(* UnlockTexture)(SDL_Renderer *renderer, SDL_Texture *texture)
SDL_Renderer *(* CreateRenderer)(SDL_Window *window, Uint32 flags)
#define SDL_BLENDMODE_MOD_FULL
Definition: SDL_render.c:71
#define SDL_zero(x)
Definition: SDL_stdinc.h:369
int SDL_RenderDrawRect(SDL_Renderer *renderer, const SDL_Rect *rect)
Draw a rectangle on the current rendering target.
Definition: SDL_render.c:1719
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1574
int SDL_GetNumRenderDrivers(void)
Get the number of 2D rendering drivers available for the current display.
Definition: SDL_render.c:108
void SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture *swdata)
Definition: SDL_yuv_sw.c:1408
int x
Definition: SDL_rect.h:66
int SDL_UpdateYUVTexture(SDL_Texture *texture, const SDL_Rect *rect, const Uint8 *Yplane, int Ypitch, const Uint8 *Uplane, int Upitch, const Uint8 *Vplane, int Vpitch)
Update a rectangle within a planar YV12 or IYUV texture with new pixel data.
Definition: SDL_render.c:952
int(* SetRenderTarget)(SDL_Renderer *renderer, SDL_Texture *texture)
int(* UpdateViewport)(SDL_Renderer *renderer)
SDL_RenderDriver D3D_RenderDriver
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1572
#define SDL_GetWindowFromID
int SDL_GetTextureColorMod(SDL_Texture *texture, Uint8 *r, Uint8 *g, Uint8 *b)
Get the additional color value used in render copy operations.
Definition: SDL_render.c:694
int SDL_GL_BindTexture(SDL_Texture *texture, float *texw, float *texh)
Bind the texture to the current OpenGL/ES/ES2 context for use with OpenGL instructions.
Definition: SDL_render.c:2065
SDL_bool SDL_RenderGetIntegerScale(SDL_Renderer *renderer)
Get whether integer scales are forced for resolution-independent rendering.
Definition: SDL_render.c:1362
int w
Definition: SDL_rect.h:67
SDL_bool SDL_RenderTargetSupported(SDL_Renderer *renderer)
Determines whether a window supports the use of render targets.
Definition: SDL_render.c:1125
int(* GL_UnbindTexture)(SDL_Renderer *renderer, SDL_Texture *texture)
#define SDL_BLENDMODE_NONE_FULL
Definition: SDL_render.c:59
GLuint index
static int UpdateLogicalSize(SDL_Renderer *renderer)
Definition: SDL_render.c:1211
#define SDL_GetSurfaceAlphaMod
SDL_RendererFlip
Flip constants for SDL_RenderCopyEx.
Definition: SDL_render.h:111
static int SDL_UpdateTextureYUV(SDL_Texture *texture, const SDL_Rect *rect, const void *pixels, int pitch)
Definition: SDL_render.c:778
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
int(* RenderCopy)(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *srcrect, const SDL_FRect *dstrect)
int SDL_RenderSetScale(SDL_Renderer *renderer, float scaleX, float scaleY)
Set the drawing scale for rendering on the current target.
Definition: SDL_render.c:1441
int SDL_SetTextureAlphaMod(SDL_Texture *texture, Uint8 alpha)
Set an additional alpha value used in render copy operations.
Definition: SDL_render.c:712
void SDL_RenderGetClipRect(SDL_Renderer *renderer, SDL_Rect *rect)
Get the clip rectangle for the current target.
Definition: SDL_render.c:1421
#define SDL_assert(condition)
Definition: SDL_assert.h:169
int SDL_UpdateTexture(SDL_Texture *texture, const SDL_Rect *rect, const void *pixels, int pitch)
Update the given texture rectangle with new pixel data.
Definition: SDL_render.c:865
#define SDL_HINT_RENDER_LOGICAL_SIZE_MODE
A variable controlling the scaling policy for SDL_RenderSetLogicalSize.
Definition: SDL_hints.h:130
int SDL_RenderClear(SDL_Renderer *renderer)
Clear the current rendering target with the drawing color.
Definition: SDL_render.c:1519
SDL_bool SDL_RenderIsClipEnabled(SDL_Renderer *renderer)
Get whether clipping is enabled on the given renderer.
Definition: SDL_render.c:1434
#define NULL
Definition: begin_code.h:164
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SDL_bool
Definition: SDL_stdinc.h:139
#define SDL_GetCurrentVideoDriver
GLfloat GLfloat GLfloat GLfloat GLfloat maxY
Definition: gl2ext.h:446
SDL_BlendFactor SDL_GetBlendModeSrcAlphaFactor(SDL_BlendMode blendMode)
Definition: SDL_render.c:2164
GLboolean enable
SDL_PixelFormat * format
Definition: SDL_surface.h:72
#define SDL_SetError
#define SDL_LockSurface
Information on the capabilities of a render driver or context.
Definition: SDL_render.h:78
static const SDL_RenderDriver * render_drivers[]
Definition: SDL_render.c:76
#define SDL_WINDOWRENDERDATA
Definition: SDL_render.c:33
GLbitfield flags
static SDL_bool IsSupportedFormat(SDL_Renderer *renderer, Uint32 format)
Definition: SDL_render.c:427
SDL_Renderer * renderer
Definition: SDL_sysrender.h:60
GLint GLint GLsizei GLsizei height
Definition: SDL_opengl.h:1572
SDL_Renderer * SDL_CreateRenderer(SDL_Window *window, int index, Uint32 flags)
Create a 2D rendering context for a window.
Definition: SDL_render.c:247
int(* RenderCopyEx)(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *srcquad, const SDL_FRect *dstrect, const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip)
#define SDL_GetSurfaceColorMod
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
#define CHECK_TEXTURE_MAGIC(texture, retval)
Definition: SDL_render.c:42
#define SDL_AddEventWatch
int SDL_SW_UpdateYUVTexturePlanar(SDL_SW_YUVTexture *swdata, const SDL_Rect *rect, const Uint8 *Yplane, int Ypitch, const Uint8 *Uplane, int Upitch, const Uint8 *Vplane, int Vpitch)
Definition: SDL_yuv_sw.c:1203
#define SDL_MUSTLOCK(S)
Definition: SDL_surface.h:61
#define SDL_LogInfo
SDL_Rect viewport
int SDL_RenderDrawLines(SDL_Renderer *renderer, const SDL_Point *points, int count)
Draw a series of connected lines on the current rendering target.
Definition: SDL_render.c:1677
int h
Definition: SDL_rect.h:67
int(* SetTextureAlphaMod)(SDL_Renderer *renderer, SDL_Texture *texture)
Definition: SDL_sysrender.h:86
SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char const char SDL_SCANF_FORMAT_STRING const char return SDL_ThreadFunction const char void return Uint32 return Uint32 void
int SDL_RenderFillRects(SDL_Renderer *renderer, const SDL_Rect *rects, int count)
Fill some number of rectangles on the current rendering target with the drawing color.
Definition: SDL_render.c:1793
The type used to identify a window.
Definition: SDL_sysvideo.h:73
#define SDL_GetWindowPixelFormat
SDL_Renderer * SDL_GetRenderer(SDL_Window *window)
Get the renderer associated with a window.
Definition: SDL_render.c:377
SDL_Rect viewport
Definition: testviewport.c:28
SDL_BlendFactor SDL_GetBlendModeDstColorFactor(SDL_BlendMode blendMode)
Definition: SDL_render.c:2150
GLdouble n
void SDL_RenderGetViewport(SDL_Renderer *renderer, SDL_Rect *rect)
Get the drawing area for the current target.
Definition: SDL_render.c:1390
int SDL_SW_CopyYUVToRGB(SDL_SW_YUVTexture *swdata, const SDL_Rect *srcrect, Uint32 target_format, int w, int h, void *pixels, int pitch)
Definition: SDL_yuv_sw.c:1288
#define SDL_HINT_RENDER_DRIVER
A variable specifying which render driver to use.
Definition: SDL_hints.h:84
void(* WindowEvent)(SDL_Renderer *renderer, const SDL_WindowEvent *event)
Definition: SDL_sysrender.h:80
void SDL_RenderGetScale(SDL_Renderer *renderer, float *scaleX, float *scaleY)
Get the drawing scale for the current target.
Definition: SDL_render.c:1451
int window_h
Definition: testoverlay2.c:146
int SDL_SetTextureColorMod(SDL_Texture *texture, Uint8 r, Uint8 g, Uint8 b)
Set an additional color value used in render copy operations.
Definition: SDL_render.c:669
GLfloat angle
SDL_MouseButtonEvent button
Definition: SDL_events.h:534
const void * magic
Definition: SDL_sysrender.h:78
Uint32 num_texture_formats
Definition: SDL_render.h:82
int SDL_RenderSetClipRect(SDL_Renderer *renderer, const SDL_Rect *rect)
Set the clip rectangle for the current target.
Definition: SDL_render.c:1403
int SDL_RenderCopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *srcrect, const SDL_Rect *dstrect, const double angle, const SDL_Point *center, const SDL_RendererFlip flip)
Copy a portion of the source texture to the current rendering target, rotating it by angle around the...
Definition: SDL_render.c:1886
Uint32 format
Definition: SDL_sysrender.h:52
#define SDL_arraysize(array)
Definition: SDL_stdinc.h:93
static char renderer_magic
Definition: SDL_render.c:102
General event structure.
Definition: SDL_events.h:525
#define SDL_malloc
int SDL_SetRenderDrawColor(SDL_Renderer *renderer, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
Set the color used for drawing operations (Rect, Line and Clear).
Definition: SDL_render.c:1464
#define SDL_BLENDMODE_ADD_FULL
Definition: SDL_render.c:67
#define SDL_ConvertPixels
void(* DestroyTexture)(SDL_Renderer *renderer, SDL_Texture *texture)
int(* CreateTexture)(SDL_Renderer *renderer, SDL_Texture *texture)
Definition: SDL_sysrender.h:83
SDL_Texture * native
Definition: SDL_sysrender.h:63
void(* RenderPresent)(SDL_Renderer *renderer)
#define SDL_ISPIXELFORMAT_FOURCC(format)
Definition: SDL_pixels.h:167
EGLSurface EGLint * rects
Definition: eglext.h:282
#define SDL_stack_free(data)
Definition: SDL_stdinc.h:339
static SDL_BlendMode SDL_GetLongBlendMode(SDL_BlendMode blendMode)
Definition: SDL_render.c:2114
SDL_Rect viewport_backup
int SDL_RenderSetLogicalSize(SDL_Renderer *renderer, int w, int h)
Set device independent resolution for rendering.
Definition: SDL_render.c:1319
GLboolean GLboolean GLboolean GLboolean a
int SDL_SetRenderTarget(SDL_Renderer *renderer, SDL_Texture *texture)
Set a texture as the current rendering target.
Definition: SDL_render.c:1134
const void * magic
Definition: SDL_sysrender.h:51
int SDL_RenderDrawLine(SDL_Renderer *renderer, int x1, int y1, int x2, int y2)
Draw a line on the current rendering target.
Definition: SDL_render.c:1609
int(* UpdateClipRect)(SDL_Renderer *renderer)
#define SDLCALL
Definition: SDL_internal.h:45
GLboolean GLboolean g
static void SDL_UnlockTextureYUV(SDL_Texture *texture)
Definition: SDL_render.c:1063
GLboolean GLboolean GLboolean b
SDL_bool clipping_enabled_backup
int y
Definition: SDL_rect.h:66
#define SDL_Unsupported()
Definition: SDL_error.h:53
int window_w
Definition: testoverlay2.c:145
SDL_FPoint dpi_scale
SDL_Texture * SDL_CreateTexture(SDL_Renderer *renderer, Uint32 format, int access, int w, int h)
Create a texture for a rendering context.
Definition: SDL_render.c:466
int SDL_GetTextureAlphaMod(SDL_Texture *texture, Uint8 *alpha)
Get the additional alpha value used in render copy operations.
Definition: SDL_render.c:735
SDL_bool integer_scale
SDL_bool clipping_enabled
static int SDL_RendererEventWatch(void *userdata, SDL_Event *event)
Definition: SDL_render.c:133
#define SDL_COMPOSE_BLENDMODE(srcColorFactor, dstColorFactor, colorOperation, srcAlphaFactor, dstAlphaFactor, alphaOperation)
Definition: SDL_render.c:50
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:64
int SDL_GL_UnbindTexture(SDL_Texture *texture)
Unbind a texture from the current OpenGL/ES/ES2 context.
Definition: SDL_render.c:2080
static int SDL_LockTextureNative(SDL_Texture *texture, const SDL_Rect *rect, void **pixels, int *pitch)
Definition: SDL_render.c:1020
Uint32 type
Definition: SDL_events.h:527
int SDL_GetRenderDriverInfo(int index, SDL_RendererInfo *info)
Get information about a specific 2D rendering driver for the current display.
Definition: SDL_render.c:118
static SDL_bool IsSupportedBlendMode(SDL_Renderer *renderer, SDL_BlendMode blendMode)
Definition: SDL_render.c:410