This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_renderer_gl.c
651 lines (580 loc) · 19.1 KB
/
SDL_renderer_gl.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
#if SDL_VIDEO_OPENGL
#include "SDL_video.h"
#include "SDL_opengl.h"
#include "SDL_sysvideo.h"
#include "SDL_pixels_c.h"
#include "SDL_rect_c.h"
#include "SDL_yuv_sw_c.h"
/* OpenGL renderer implementation */
static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags);
static int GL_ActivateRenderer(SDL_Renderer * renderer);
static int GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int GL_SetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Color * colors, int firstcolor,
int ncolors);
static int GL_GetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture, SDL_Color * colors,
int firstcolor, int ncolors);
static int GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels,
int pitch);
static int GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty,
void **pixels, int *pitch);
static void GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static void GL_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
int numrects, const SDL_Rect * rects);
static int GL_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 color);
static int GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect,
int blendMode, int scaleMode);
static void GL_RenderPresent(SDL_Renderer * renderer);
static void GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static void GL_DestroyRenderer(SDL_Renderer * renderer);
SDL_RenderDriver GL_RenderDriver = {
GL_CreateRenderer,
{
"opengl",
(SDL_Renderer_PresentDiscard | SDL_Renderer_PresentVSync |
SDL_Renderer_Accelerated),
(SDL_TextureBlendMode_None | SDL_TextureBlendMode_Mask |
SDL_TextureBlendMode_Blend | SDL_TextureBlendMode_Add |
SDL_TextureBlendMode_Mod),
(SDL_TextureScaleMode_None | SDL_TextureScaleMode_Fast |
SDL_TextureScaleMode_Slow),
16,
{
SDL_PixelFormat_Index1LSB,
SDL_PixelFormat_Index1MSB,
SDL_PixelFormat_Index8,
SDL_PixelFormat_RGB332,
SDL_PixelFormat_RGB444,
SDL_PixelFormat_RGB555,
SDL_PixelFormat_ARGB4444,
SDL_PixelFormat_ARGB1555,
SDL_PixelFormat_RGB565,
SDL_PixelFormat_RGB24,
SDL_PixelFormat_BGR24,
SDL_PixelFormat_RGB888,
SDL_PixelFormat_BGR888,
SDL_PixelFormat_ARGB8888,
SDL_PixelFormat_ABGR8888,
SDL_PixelFormat_ARGB2101010},
0,
0}
};
typedef struct
{
SDL_GLContext context;
} GL_RenderData;
typedef struct
{
GLuint texture;
GLenum type;
GLfloat texw;
GLfloat texh;
GLenum format;
GLenum formattype;
void *pixels;
int pitch;
SDL_DirtyRectList dirty;
} GL_TextureData;
static void
GL_SetError(const char *prefix, GLenum result)
{
const char *error;
switch (result) {
case GL_NO_ERROR:
error = "GL_NO_ERROR";
break;
case GL_INVALID_ENUM:
error = "GL_INVALID_ENUM";
break;
case GL_INVALID_VALUE:
error = "GL_INVALID_VALUE";
break;
case GL_INVALID_OPERATION:
error = "GL_INVALID_OPERATION";
break;
case GL_STACK_OVERFLOW:
error = "GL_STACK_OVERFLOW";
break;
case GL_STACK_UNDERFLOW:
error = "GL_STACK_UNDERFLOW";
break;
case GL_OUT_OF_MEMORY:
error = "GL_OUT_OF_MEMORY";
break;
case GL_TABLE_TOO_LARGE:
error = "GL_TABLE_TOO_LARGE";
break;
default:
error = "UNKNOWN";
break;
}
SDL_SetError("%s: %s", prefix, error);
}
void
GL_AddRenderDriver(_THIS)
{
if (_this->GL_CreateContext) {
SDL_AddRenderDriver(0, &GL_RenderDriver);
}
}
SDL_Renderer *
GL_CreateRenderer(SDL_Window * window, Uint32 flags)
{
SDL_Renderer *renderer;
GL_RenderData *data;
if (!(window->flags & SDL_WINDOW_OPENGL)) {
window->flags |= SDL_WINDOW_OPENGL;
if (SDL_RecreateWindow(window) < 0) {
return NULL;
}
}
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
data = (GL_RenderData *) SDL_calloc(1, sizeof(*data));
if (!data) {
GL_DestroyRenderer(renderer);
SDL_OutOfMemory();
return NULL;
}
renderer->ActivateRenderer = GL_ActivateRenderer;
renderer->CreateTexture = GL_CreateTexture;
renderer->SetTexturePalette = GL_SetTexturePalette;
renderer->GetTexturePalette = GL_GetTexturePalette;
renderer->UpdateTexture = GL_UpdateTexture;
renderer->LockTexture = GL_LockTexture;
renderer->UnlockTexture = GL_UnlockTexture;
renderer->DirtyTexture = GL_DirtyTexture;
renderer->RenderFill = GL_RenderFill;
renderer->RenderCopy = GL_RenderCopy;
renderer->RenderPresent = GL_RenderPresent;
renderer->DestroyTexture = GL_DestroyTexture;
renderer->DestroyRenderer = GL_DestroyRenderer;
renderer->info = GL_RenderDriver.info;
renderer->window = window->id;
renderer->driverdata = data;
renderer->info.flags =
(SDL_Renderer_PresentDiscard | SDL_Renderer_Accelerated);
data->context = SDL_GL_CreateContext(window->id);
if (!data->context) {
GL_DestroyRenderer(renderer);
return NULL;
}
if (SDL_GL_MakeCurrent(window->id, data->context) < 0) {
GL_DestroyRenderer(renderer);
return NULL;
}
if (flags & SDL_Renderer_PresentVSync) {
SDL_GL_SetSwapInterval(1);
} else {
SDL_GL_SetSwapInterval(0);
}
if (SDL_GL_GetSwapInterval() > 0) {
renderer->info.flags |= SDL_Renderer_PresentVSync;
}
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &renderer->info.max_texture_width);
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &renderer->info.max_texture_height);
/* FIXME: Check for GL_ARB_texture_rectangle and GL_EXT_texture_rectangle */
/* Set up parameters for rendering */
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
#ifdef USE_GL_TEXTURE_RECTANGLE
glEnable(GL_TEXTURE_RECTANGLE_ARB);
#else
glEnable(GL_TEXTURE_2D);
#endif
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glViewport(0, 0, window->w, window->h);
glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0, 0.0, 1.0);
return renderer;
}
static int
GL_ActivateRenderer(SDL_Renderer * renderer)
{
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
return SDL_GL_MakeCurrent(window->id, data->context);
}
static __inline__ int
power_of_2(int input)
{
int value = 1;
while (value < input) {
value <<= 1;
}
return value;
}
static int
GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
GL_TextureData *data;
GLint internalFormat;
GLenum format, type;
int texture_w, texture_h;
GLenum result;
switch (texture->format) {
case SDL_PixelFormat_Index1LSB:
case SDL_PixelFormat_Index1MSB:
internalFormat = GL_RGB;
format = GL_COLOR_INDEX;
type = GL_BITMAP;
break;
case SDL_PixelFormat_Index8:
internalFormat = GL_RGB;
format = GL_COLOR_INDEX;
type = GL_UNSIGNED_BYTE;
break;
case SDL_PixelFormat_RGB332:
internalFormat = GL_R3_G3_B2;
format = GL_RGB;
type = GL_UNSIGNED_BYTE_3_3_2;
break;
case SDL_PixelFormat_RGB444:
internalFormat = GL_RGB4;
format = GL_RGB;
type = GL_UNSIGNED_SHORT_4_4_4_4;
break;
case SDL_PixelFormat_RGB555:
internalFormat = GL_RGB5;
format = GL_RGB;
type = GL_UNSIGNED_SHORT_5_5_5_1;
break;
case SDL_PixelFormat_ARGB4444:
internalFormat = GL_RGBA4;
format = GL_BGRA;
type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
break;
case SDL_PixelFormat_ARGB1555:
internalFormat = GL_RGB5_A1;
format = GL_BGRA;
type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
break;
case SDL_PixelFormat_RGB565:
internalFormat = GL_RGB8;
format = GL_RGB;
type = GL_UNSIGNED_SHORT_5_6_5;
break;
case SDL_PixelFormat_RGB24:
internalFormat = GL_RGB8;
format = GL_RGB;
type = GL_UNSIGNED_BYTE;
break;
case SDL_PixelFormat_RGB888:
internalFormat = GL_RGB8;
format = GL_BGRA;
type = GL_UNSIGNED_BYTE;
break;
case SDL_PixelFormat_BGR24:
internalFormat = GL_RGB8;
format = GL_BGR;
type = GL_UNSIGNED_BYTE;
break;
case SDL_PixelFormat_BGR888:
internalFormat = GL_RGB8;
format = GL_RGBA;
type = GL_UNSIGNED_BYTE;
break;
case SDL_PixelFormat_ARGB8888:
internalFormat = GL_RGBA8;
format = GL_BGRA;
type = GL_UNSIGNED_BYTE;
break;
case SDL_PixelFormat_ABGR8888:
internalFormat = GL_RGBA8;
format = GL_RGBA;
type = GL_UNSIGNED_BYTE;
break;
case SDL_PixelFormat_ARGB2101010:
internalFormat = GL_RGB10_A2;
format = GL_BGRA;
type = GL_UNSIGNED_INT_2_10_10_10_REV;
break;
default:
SDL_SetError("Unsupported texture format");
return -1;
}
data = (GL_TextureData *) SDL_calloc(1, sizeof(*data));
if (!data) {
SDL_OutOfMemory();
return -1;
}
texture->driverdata = data;
glGetError();
glGenTextures(1, &data->texture);
#ifdef USE_GL_TEXTURE_RECTANGLE
data->type = GL_TEXTURE_RECTANGLE_ARB;
texture_w = texture->w;
texture_h = texture->h;
data->texw = (GLfloat) texture->w;
data->texh = (GLfloat) texture->h;
#else
data->type = GL_TEXTURE_2D;
texture_w = power_of_2(texture->w);
texture_h = power_of_2(texture->h);
data->texw = (GLfloat) texture->w / texture_w;
data->texh = (GLfloat) texture->h / texture_h;
#endif
data->format = format;
data->formattype = type;
glBindTexture(data->type, data->texture);
glTexImage2D(data->type, 0, internalFormat, texture_w, texture_h, 0,
format, type, NULL);
result = glGetError();
if (result != GL_NO_ERROR) {
GL_SetError("glTexImage2D()", result);
return -1;
}
return 0;
}
static int
GL_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Color * colors, int firstcolor, int ncolors)
{
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
return 0;
}
static int
GL_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
SDL_Color * colors, int firstcolor, int ncolors)
{
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
return 0;
}
static void
SetupTextureUpdate(SDL_Texture * texture, int pitch)
{
if (texture->format == SDL_PixelFormat_Index1LSB) {
glPixelStorei(GL_UNPACK_LSB_FIRST, 1);
} else if (texture->format == SDL_PixelFormat_Index1MSB) {
glPixelStorei(GL_UNPACK_LSB_FIRST, 0);
}
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_ROW_LENGTH,
pitch / SDL_BYTESPERPIXEL(texture->format));
}
static int
GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
{
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
GLenum result;
glGetError();
SetupTextureUpdate(texture, pitch);
glBindTexture(data->type, data->texture);
glTexSubImage2D(data->type, 0, rect->x, rect->y, rect->w, rect->h,
data->format, data->formattype, pixels);
result = glGetError();
if (result != GL_NO_ERROR) {
GL_SetError("glTexSubImage2D()", result);
return -1;
}
return 0;
}
static int
GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch)
{
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
if (!data->pixels) {
data->pitch = texture->w * SDL_BYTESPERPIXEL(texture->format);
data->pixels = SDL_malloc(texture->h * data->pitch);
if (!data->pixels) {
SDL_OutOfMemory();
return -1;
}
}
if (markDirty) {
SDL_AddDirtyRect(&data->dirty, rect);
}
*pixels =
(void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch = data->pitch;
return 0;
}
static void
GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
}
static void
GL_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture, int numrects,
const SDL_Rect * rects)
{
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
int i;
for (i = 0; i < numrects; ++i) {
SDL_AddDirtyRect(&data->dirty, &rects[i]);
}
}
static int
GL_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect, Uint32 color)
{
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
GLclampf r, g, b, a;
a = ((GLclampf) ((color >> 24) & 0xFF)) / 255.0f;
r = ((GLclampf) ((color >> 16) & 0xFF)) / 255.0f;
g = ((GLclampf) ((color >> 8) & 0xFF)) / 255.0f;
b = ((GLclampf) (color & 0xFF)) / 255.0f;
glClearColor(r, g, b, a);
glViewport(rect->x, window->h - rect->y, rect->w, rect->h);
glClear(GL_COLOR_BUFFER_BIT);
glViewport(0, 0, window->w, window->h);
return 0;
}
static int
GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect,
int blendMode, int scaleMode)
{
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
int minx, miny, maxx, maxy;
GLfloat minu, maxu, minv, maxv;
if (texturedata->dirty.count > 0) {
SDL_DirtyRect *dirty;
void *pixels;
int bpp = SDL_BYTESPERPIXEL(texture->format);
int pitch = texturedata->pitch;
SetupTextureUpdate(texture, pitch);
glBindTexture(texturedata->type, texturedata->texture);
for (dirty = texturedata->dirty.list; dirty; dirty = dirty->next) {
SDL_Rect *rect = &dirty->rect;
pixels =
(void *) ((Uint8 *) texturedata->pixels + rect->y * pitch +
rect->x * bpp);
glTexSubImage2D(texturedata->type, 0, rect->x, rect->y, rect->w,
rect->h, texturedata->format,
texturedata->formattype, pixels);
}
SDL_ClearDirtyRects(&texturedata->dirty);
}
minx = dstrect->x;
miny = dstrect->y;
maxx = dstrect->x + dstrect->w;
maxy = dstrect->y + dstrect->h;
minu = (GLfloat) srcrect->x / texture->w;
minu *= texturedata->texw;
maxu = (GLfloat) (srcrect->x + srcrect->w) / texture->w;
maxu *= texturedata->texw;
minv = (GLfloat) srcrect->y / texture->h;
minv *= texturedata->texh;
maxv = (GLfloat) (srcrect->y + srcrect->h) / texture->h;
maxv *= texturedata->texh;
glBindTexture(texturedata->type, texturedata->texture);
switch (blendMode) {
case SDL_TextureBlendMode_None:
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
glDisable(GL_BLEND);
break;
case SDL_TextureBlendMode_Mask:
case SDL_TextureBlendMode_Blend:
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
break;
case SDL_TextureBlendMode_Add:
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
break;
case SDL_TextureBlendMode_Mod:
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glEnable(GL_BLEND);
glBlendFunc(GL_ZERO, GL_SRC_COLOR);
break;
}
switch (scaleMode) {
case SDL_TextureScaleMode_None:
case SDL_TextureScaleMode_Fast:
glTexParameteri(texturedata->type, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(texturedata->type, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
break;
case SDL_TextureScaleMode_Slow:
case SDL_TextureScaleMode_Best:
glTexParameteri(texturedata->type, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(texturedata->type, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
break;
}
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(minu, minv);
glVertex2i(minx, miny);
glTexCoord2f(maxu, minv);
glVertex2i(maxx, miny);
glTexCoord2f(minu, maxv);
glVertex2i(minx, maxy);
glTexCoord2f(maxu, maxv);
glVertex2i(maxx, maxy);
glEnd();
return 0;
}
static void
GL_RenderPresent(SDL_Renderer * renderer)
{
SDL_GL_SwapWindow(renderer->window);
}
static void
GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
if (!data) {
return;
}
if (data->texture) {
glDeleteTextures(1, &data->texture);
}
if (data->pixels) {
SDL_free(data->pixels);
}
SDL_FreeDirtyRects(&data->dirty);
SDL_free(data);
texture->driverdata = NULL;
}
void
GL_DestroyRenderer(SDL_Renderer * renderer)
{
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
if (data) {
if (data->context) {
SDL_GL_MakeCurrent(0, NULL);
SDL_GL_DeleteContext(data->context);
}
SDL_free(data);
}
SDL_free(renderer);
}
#endif /* SDL_VIDEO_OPENGL */
/* vi: set ts=4 sw=4 expandtab: */