This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_x11render.c
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2009 Sam Lantinga
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
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_RENDER_X11
#include "SDL_x11video.h"
#include "../SDL_rect_c.h"
#include "../SDL_pixels_c.h"
#include "../SDL_yuv_sw_c.h"
/* X11 renderer implementation */
static SDL_Renderer *X11_CreateRenderer(SDL_Window * window, Uint32 flags);
static int X11_DisplayModeChanged(SDL_Renderer * renderer);
static int X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int X11_QueryTexturePixels(SDL_Renderer * renderer,
SDL_Texture * texture, void **pixels,
int *pitch);
static int X11_SetTextureBlendMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int X11_SetTextureScaleMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int X11_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels,
int pitch);
static int X11_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty,
void **pixels, int *pitch);
static void X11_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
50
51
52
53
54
static int X11_SetDrawColor(SDL_Renderer * renderer);
static int X11_SetDrawBlendMode(SDL_Renderer * renderer);
static int X11_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2,
int y2);
static int X11_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect);
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
static int X11_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect);
static void X11_RenderPresent(SDL_Renderer * renderer);
static void X11_DestroyTexture(SDL_Renderer * renderer,
SDL_Texture * texture);
static void X11_DestroyRenderer(SDL_Renderer * renderer);
SDL_RenderDriver X11_RenderDriver = {
X11_CreateRenderer,
{
"x11",
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_ACCELERATED),
SDL_TEXTUREMODULATE_NONE,
71
SDL_BLENDMODE_NONE,
72
73
74
75
76
77
78
79
80
81
82
SDL_TEXTURESCALEMODE_NONE,
0,
{0},
0,
0}
};
typedef struct
{
Display *display;
int screen;
83
84
Visual *visual;
int depth;
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
Window window;
Pixmap pixmaps[3];
int current_pixmap;
Drawable drawable;
SDL_PixelFormat *format;
GC gc;
SDL_DirtyRectList dirty;
SDL_bool makedirty;
} X11_RenderData;
typedef struct
{
SDL_SW_YUVTexture *yuv;
Uint32 format;
Pixmap pixmap;
XImage *image;
#ifndef NO_SHARED_MEMORY
/* MIT shared memory extension information */
XShmSegmentInfo shminfo;
#endif
105
XImage *scaling_image;
106
107
108
109
110
111
112
void *pixels;
int pitch;
} X11_TextureData;
#ifndef NO_SHARED_MEMORY
/* Shared memory error handler routine */
static int shm_error;
113
114
115
static int (*X_handler) (Display *, XErrorEvent *) = NULL;
static int
shm_errhandler(Display * d, XErrorEvent * e)
117
118
119
120
121
122
if (e->error_code == BadAccess) {
shm_error = True;
return (0);
} else {
return (X_handler(d, e));
}
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
}
#endif /* ! NO_SHARED_MEMORY */
static void
UpdateYUVTextureData(SDL_Texture * texture)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
SDL_Rect rect;
rect.x = 0;
rect.y = 0;
rect.w = texture->w;
rect.h = texture->h;
SDL_SW_CopyYUVToRGB(data->yuv, &rect, data->format, texture->w,
texture->h, data->pixels, data->pitch);
}
void
X11_AddRenderDriver(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
SDL_RendererInfo *info = &X11_RenderDriver.info;
145
SDL_DisplayMode *mode = &SDL_CurrentDisplay.desktop_mode;
147
148
149
150
151
152
info->texture_formats[info->num_texture_formats++] = mode->format;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_YV12;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_IYUV;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_YUY2;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_UYVY;
info->texture_formats[info->num_texture_formats++] = SDL_PIXELFORMAT_YVYU;
153
154
155
156
157
158
159
SDL_AddRenderDriver(0, &X11_RenderDriver);
}
SDL_Renderer *
X11_CreateRenderer(SDL_Window * window, Uint32 flags)
{
160
161
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
SDL_DisplayData *displaydata = (SDL_DisplayData *) display->driverdata;
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
SDL_Renderer *renderer;
SDL_RendererInfo *info;
X11_RenderData *data;
XGCValues gcv;
int i, n;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
data = (X11_RenderData *) SDL_calloc(1, sizeof(*data));
if (!data) {
X11_DestroyRenderer(renderer);
SDL_OutOfMemory();
return NULL;
}
data->display = windowdata->videodata->display;
data->screen = displaydata->screen;
185
186
data->visual = displaydata->visual;
data->depth = displaydata->depth;
187
188
189
190
191
192
193
194
195
196
data->window = windowdata->window;
renderer->DisplayModeChanged = X11_DisplayModeChanged;
renderer->CreateTexture = X11_CreateTexture;
renderer->QueryTexturePixels = X11_QueryTexturePixels;
renderer->SetTextureBlendMode = X11_SetTextureBlendMode;
renderer->SetTextureScaleMode = X11_SetTextureScaleMode;
renderer->UpdateTexture = X11_UpdateTexture;
renderer->LockTexture = X11_LockTexture;
renderer->UnlockTexture = X11_UnlockTexture;
197
198
199
renderer->SetDrawColor = X11_SetDrawColor;
renderer->SetDrawBlendMode = X11_SetDrawBlendMode;
renderer->RenderLine = X11_RenderLine;
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
renderer->RenderFill = X11_RenderFill;
renderer->RenderCopy = X11_RenderCopy;
renderer->RenderPresent = X11_RenderPresent;
renderer->DestroyTexture = X11_DestroyTexture;
renderer->DestroyRenderer = X11_DestroyRenderer;
renderer->info = X11_RenderDriver.info;
renderer->window = window->id;
renderer->driverdata = data;
renderer->info.flags = SDL_RENDERER_ACCELERATED;
if (flags & SDL_RENDERER_SINGLEBUFFER) {
renderer->info.flags |=
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY);
n = 0;
} else if (flags & SDL_RENDERER_PRESENTFLIP2) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
n = 2;
} else if (flags & SDL_RENDERER_PRESENTFLIP3) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
n = 3;
} else {
renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
n = 1;
}
for (i = 0; i < n; ++i) {
226
227
data->pixmaps[i] =
XCreatePixmap(data->display, data->window, window->w, window->h,
228
displaydata->depth);
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
if (data->pixmaps[i] == None) {
X11_DestroyRenderer(renderer);
SDL_SetError("XCreatePixmap() failed");
return NULL;
}
}
if (n > 0) {
data->drawable = data->pixmaps[0];
data->makedirty = SDL_TRUE;
} else {
data->drawable = data->window;
data->makedirty = SDL_FALSE;
}
data->current_pixmap = 0;
/* Get the format of the window */
245
246
247
if (!SDL_PixelFormatEnumToMasks
(display->current_mode.format, &bpp, &Rmask, &Gmask, &Bmask,
&Amask)) {
248
249
250
SDL_SetError("Unknown display format");
X11_DestroyRenderer(renderer);
return NULL;
251
252
253
254
255
256
257
258
259
}
data->format = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
if (!data->format) {
X11_DestroyRenderer(renderer);
return NULL;
}
/* Create the drawing context */
gcv.graphics_exposures = False;
260
261
data->gc =
XCreateGC(data->display, data->window, GCGraphicsExposures, &gcv);
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
if (!data->gc) {
X11_DestroyRenderer(renderer);
SDL_SetError("XCreateGC() failed");
return NULL;
}
return renderer;
}
static int
X11_DisplayModeChanged(SDL_Renderer * renderer)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
int i, n;
if (renderer->info.flags & SDL_RENDERER_SINGLEBUFFER) {
n = 0;
} else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
n = 2;
} else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
n = 3;
} else {
n = 1;
}
for (i = 0; i < n; ++i) {
if (data->pixmaps[i] != None) {
XFreePixmap(data->display, data->pixmaps[i]);
data->pixmaps[i] = None;
}
}
for (i = 0; i < n; ++i) {
294
295
data->pixmaps[i] =
XCreatePixmap(data->display, data->window, window->w, window->h,
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
if (data->pixmaps[i] == None) {
SDL_SetError("XCreatePixmap() failed");
return -1;
}
}
if (n > 0) {
data->drawable = data->pixmaps[0];
}
data->current_pixmap = 0;
return 0;
}
static int
X11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
X11_RenderData *renderdata = (X11_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
X11_TextureData *data;
data = (X11_TextureData *) SDL_calloc(1, sizeof(*data));
if (!data) {
SDL_OutOfMemory();
return -1;
}
texture->driverdata = data;
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
data->yuv =
SDL_SW_CreateYUVTexture(texture->format, texture->w, texture->h);
if (!data->yuv) {
return -1;
}
data->format = display->current_mode.format;
} else {
334
335
/* The image/pixmap depth must be the same as the window or you
get a BadMatch error when trying to putimage or copyarea.
336
*/
337
338
339
340
if (texture->format != display->current_mode.format) {
SDL_SetError("Texture format doesn't match window format");
return -1;
}
341
342
data->format = texture->format;
}
343
data->pitch = texture->w * SDL_BYTESPERPIXEL(data->format);
344
345
346
347
348
349
350
351
if (data->yuv || texture->access == SDL_TEXTUREACCESS_STREAMING) {
#ifndef NO_SHARED_MEMORY
XShmSegmentInfo *shminfo = &data->shminfo;
shm_error = True;
if (SDL_X11_HAVE_SHM) {
352
353
354
shminfo->shmid =
shmget(IPC_PRIVATE, texture->h * data->pitch,
IPC_CREAT | 0777);
355
if (shminfo->shmid >= 0) {
356
shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
357
shminfo->readOnly = False;
358
if (shminfo->shmaddr != (char *) -1) {
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
shm_error = False;
X_handler = XSetErrorHandler(shm_errhandler);
XShmAttach(renderdata->display, shminfo);
XSync(renderdata->display, True);
XSetErrorHandler(X_handler);
if (shm_error) {
shmdt(shminfo->shmaddr);
}
}
shmctl(shminfo->shmid, IPC_RMID, NULL);
}
}
if (!shm_error) {
data->pixels = shminfo->shmaddr;
374
data->image =
375
376
377
XShmCreateImage(renderdata->display, renderdata->visual,
renderdata->depth, ZPixmap, shminfo->shmaddr,
shminfo, texture->w, texture->h);
378
if (!data->image) {
379
380
381
382
383
384
385
386
387
388
389
390
391
392
XShmDetach(renderdata->display, shminfo);
XSync(renderdata->display, False);
shmdt(shminfo->shmaddr);
shm_error = True;
}
}
if (shm_error) {
shminfo->shmaddr = NULL;
}
if (!data->image)
#endif /* not NO_SHARED_MEMORY */
{
data->pixels = SDL_malloc(texture->h * data->pitch);
if (!data->pixels) {
393
X11_DestroyTexture(renderer, texture);
394
395
396
397
SDL_OutOfMemory();
return -1;
}
398
data->image =
399
400
401
402
403
XCreateImage(renderdata->display, renderdata->visual,
renderdata->depth, ZPixmap, 0, data->pixels,
texture->w, texture->h,
SDL_BYTESPERPIXEL(data->format) * 8,
data->pitch);
404
if (!data->image) {
405
X11_DestroyTexture(renderer, texture);
406
407
408
409
410
SDL_SetError("XCreateImage() failed");
return -1;
}
}
} else {
411
412
data->pixmap =
XCreatePixmap(renderdata->display, renderdata->window, texture->w,
413
texture->h, renderdata->depth);
414
if (data->pixmap == None) {
415
X11_DestroyTexture(renderer, texture);
416
417
418
419
SDL_SetError("XCteatePixmap() failed");
return -1;
}
420
data->image =
421
422
423
424
XCreateImage(renderdata->display, renderdata->visual,
renderdata->depth, ZPixmap, 0, NULL, texture->w,
texture->h, SDL_BYTESPERPIXEL(data->format) * 8,
data->pitch);
425
if (!data->image) {
426
X11_DestroyTexture(renderer, texture);
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
SDL_SetError("XCreateImage() failed");
return -1;
}
}
return 0;
}
static int
X11_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
void **pixels, int *pitch)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (data->yuv) {
return SDL_SW_QueryYUVTexturePixels(data->yuv, pixels, pitch);
} else {
*pixels = data->pixels;
*pitch = data->pitch;
return 0;
}
}
static int
X11_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
switch (texture->blendMode) {
454
case SDL_BLENDMODE_NONE:
455
456
457
return 0;
default:
SDL_Unsupported();
458
texture->blendMode = SDL_BLENDMODE_NONE;
459
460
461
462
463
464
465
return -1;
}
}
static int
X11_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
466
467
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
468
469
470
switch (texture->scaleMode) {
case SDL_TEXTURESCALEMODE_NONE:
return 0;
471
472
473
474
475
476
case SDL_TEXTURESCALEMODE_FAST:
/* We can sort of fake it for streaming textures */
if (data->yuv || texture->access == SDL_TEXTUREACCESS_STREAMING) {
return 0;
}
/* Fall through to unsupported case */
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
default:
SDL_Unsupported();
texture->scaleMode = SDL_TEXTURESCALEMODE_NONE;
return -1;
}
return 0;
}
static int
X11_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (data->yuv) {
if (SDL_SW_UpdateYUVTexture(data->yuv, rect, pixels, pitch) < 0) {
return -1;
}
UpdateYUVTextureData(texture);
return 0;
} else {
X11_RenderData *renderdata = (X11_RenderData *) renderer->driverdata;
if (data->pixels) {
Uint8 *src, *dst;
int row;
size_t length;
src = (Uint8 *) pixels;
dst =
(Uint8 *) data->pixels + rect->y * data->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format);
length = rect->w * SDL_BYTESPERPIXEL(texture->format);
for (row = 0; row < rect->h; ++row) {
SDL_memcpy(dst, src, length);
src += pitch;
dst += data->pitch;
}
} else {
data->image->width = rect->w;
data->image->height = rect->h;
518
data->image->data = (char *) pixels;
519
data->image->bytes_per_line = pitch;
520
521
XPutImage(renderdata->display, data->pixmap, renderdata->gc,
data->image, 0, 0, rect->x, rect->y, rect->w, rect->h);
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
}
return 0;
}
}
static int
X11_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (data->yuv) {
return SDL_SW_LockYUVTexture(data->yuv, rect, markDirty, pixels,
pitch);
} else if (data->pixels) {
*pixels =
(void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch = data->pitch;
return 0;
} else {
SDL_SetError("No pixels available");
return -1;
}
}
static void
X11_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (data->yuv) {
SDL_SW_UnlockYUVTexture(data->yuv);
UpdateYUVTextureData(texture);
}
}
static int
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
X11_SetDrawColor(SDL_Renderer * renderer)
{
return 0;
}
static int
X11_SetDrawBlendMode(SDL_Renderer * renderer)
{
switch (renderer->blendMode) {
case SDL_BLENDMODE_NONE:
return 0;
default:
SDL_Unsupported();
renderer->blendMode = SDL_BLENDMODE_NONE;
return -1;
}
}
static Uint32
renderdrawcolor(SDL_Renderer * renderer, int premult)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
Uint8 r = renderer->r;
Uint8 g = renderer->g;
Uint8 b = renderer->b;
Uint8 a = renderer->a;
if (premult)
return SDL_MapRGBA(data->format, ((int) r * (int) a) / 255,
((int) g * (int) a) / 255,
((int) b * (int) a) / 255, 255);
else
return SDL_MapRGBA(data->format, r, g, b, a);
}
static int
X11_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2, int y2)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
unsigned long foreground;
if (data->makedirty) {
SDL_Rect rect;
if (x1 < x2) {
rect.x = x1;
rect.w = (x2 - x1) + 1;
} else {
rect.x = x2;
rect.w = (x1 - x2) + 1;
}
if (y1 < y2) {
rect.y = y1;
rect.h = (y2 - y1) + 1;
} else {
rect.y = y2;
rect.h = (y1 - y2) + 1;
}
SDL_AddDirtyRect(&data->dirty, &rect);
}
foreground = renderdrawcolor(renderer, 1);
XSetForeground(data->display, data->gc, foreground);
XDrawLine(data->display, data->drawable, data->gc, x1, y1, x2, y2);
}
static int
X11_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect)
628
629
630
631
632
633
634
635
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
unsigned long foreground;
if (data->makedirty) {
SDL_AddDirtyRect(&data->dirty, rect);
}
636
foreground = renderdrawcolor(renderer, 1);
637
XSetForeground(data->display, data->gc, foreground);
638
XFillRectangle(data->display, data->drawable, data->gc, rect->x, rect->y,
639
rect->w, rect->h);
640
641
642
643
644
645
646
647
648
649
650
651
652
return 0;
}
static int
X11_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
X11_TextureData *texturedata = (X11_TextureData *) texture->driverdata;
if (data->makedirty) {
SDL_AddDirtyRect(&data->dirty, dstrect);
}
653
if (srcrect->w == dstrect->w && srcrect->h == dstrect->h) {
654
#ifndef NO_SHARED_MEMORY
655
656
657
658
659
660
if (texturedata->shminfo.shmaddr) {
XShmPutImage(data->display, data->drawable, data->gc,
texturedata->image, srcrect->x, srcrect->y,
dstrect->x, dstrect->y, srcrect->w, srcrect->h,
False);
} else
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
if (texturedata->pixels) {
XPutImage(data->display, data->drawable, data->gc,
texturedata->image, srcrect->x, srcrect->y, dstrect->x,
dstrect->y, srcrect->w, srcrect->h);
} else {
XCopyArea(data->display, texturedata->pixmap, data->drawable,
data->gc, srcrect->x, srcrect->y, dstrect->w,
dstrect->h, srcrect->x, srcrect->y);
}
} else if (texturedata->yuv
|| texture->access == SDL_TEXTUREACCESS_STREAMING) {
SDL_Surface src, dst;
SDL_PixelFormat fmt;
SDL_Rect rect;
XImage *image = texturedata->scaling_image;
if (!image) {
int depth;
void *pixels;
int pitch;
pitch = dstrect->w * SDL_BYTESPERPIXEL(texturedata->format);
pixels = SDL_malloc(dstrect->h * pitch);
if (!pixels) {
SDL_OutOfMemory();
return -1;
}
image =
691
692
XCreateImage(data->display, data->visual, data->depth,
ZPixmap, 0, pixels, dstrect->w, dstrect->h,
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
SDL_BYTESPERPIXEL(texturedata->format) * 8,
pitch);
if (!image) {
SDL_SetError("XCreateImage() failed");
return -1;
}
texturedata->scaling_image = image;
} else if (image->width != dstrect->w || image->height != dstrect->h
|| !image->data) {
image->width = dstrect->w;
image->height = dstrect->h;
image->bytes_per_line =
image->width * SDL_BYTESPERPIXEL(texturedata->format);
image->data =
(char *) SDL_realloc(image->data,
image->height * image->bytes_per_line);
if (!image->data) {
SDL_OutOfMemory();
return -1;
}
}
/* Set up fake surfaces for SDL_SoftStretch() */
717
SDL_zero(src);
718
719
720
721
722
723
724
725
726
727
728
src.format = &fmt;
src.w = texture->w;
src.h = texture->h;
#ifndef NO_SHARED_MEMORY
if (texturedata->shminfo.shmaddr) {
src.pixels = texturedata->shminfo.shmaddr;
} else
#endif
src.pixels = texturedata->pixels;
src.pitch = texturedata->pitch;
729
SDL_zero(dst);
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
dst.format = &fmt;
dst.w = image->width;
dst.h = image->height;
dst.pixels = image->data;
dst.pitch = image->bytes_per_line;
fmt.BytesPerPixel = SDL_BYTESPERPIXEL(texturedata->format);
rect.x = 0;
rect.y = 0;
rect.w = dstrect->w;
rect.h = dstrect->h;
if (SDL_SoftStretch(&src, srcrect, &dst, &rect) < 0) {
return -1;
}
XPutImage(data->display, data->drawable, data->gc, image, 0, 0,
dstrect->x, dstrect->y, dstrect->w, dstrect->h);
748
749
750
XCopyArea(data->display, texturedata->pixmap, data->drawable,
data->gc, srcrect->x, srcrect->y, dstrect->w, dstrect->h,
srcrect->x, srcrect->y);
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
}
return 0;
}
static void
X11_RenderPresent(SDL_Renderer * renderer)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
SDL_DirtyRect *dirty;
/* Send the data to the display */
if (!(renderer->info.flags & SDL_RENDERER_SINGLEBUFFER)) {
for (dirty = data->dirty.list; dirty; dirty = dirty->next) {
const SDL_Rect *rect = &dirty->rect;
XCopyArea(data->display, data->drawable, data->window,
data->gc, rect->x, rect->y, rect->w, rect->h,
rect->x, rect->y);
}
SDL_ClearDirtyRects(&data->dirty);
}
XSync(data->display, False);
/* Update the flipping chain, if any */
if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
data->current_pixmap = (data->current_pixmap + 1) % 2;
data->drawable = data->pixmaps[data->current_pixmap];
} else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
data->current_pixmap = (data->current_pixmap + 1) % 3;
data->drawable = data->pixmaps[data->current_pixmap];
}
}
static void
X11_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
X11_RenderData *renderdata = (X11_RenderData *) renderer->driverdata;
X11_TextureData *data = (X11_TextureData *) texture->driverdata;
if (!data) {
return;
}
if (data->yuv) {
SDL_SW_DestroyYUVTexture(data->yuv);
}
if (data->pixmap != None) {
XFreePixmap(renderdata->display, data->pixmap);
}
if (data->image) {
data->image->data = NULL;
XDestroyImage(data->image);
}
#ifndef NO_SHARED_MEMORY
if (data->shminfo.shmaddr) {
XShmDetach(renderdata->display, &data->shminfo);
XSync(renderdata->display, False);
shmdt(data->shminfo.shmaddr);
data->pixels = NULL;
}
#endif
810
811
812
813
814
if (data->scaling_image) {
SDL_free(data->scaling_image->data);
data->scaling_image->data = NULL;
XDestroyImage(data->scaling_image);
}
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
if (data->pixels) {
SDL_free(data->pixels);
}
SDL_free(data);
texture->driverdata = NULL;
}
static void
X11_DestroyRenderer(SDL_Renderer * renderer)
{
X11_RenderData *data = (X11_RenderData *) renderer->driverdata;
int i;
if (data) {
for (i = 0; i < SDL_arraysize(data->pixmaps); ++i) {
if (data->pixmaps[i] != None) {
XFreePixmap(data->display, data->pixmaps[i]);
}
}
if (data->format) {
SDL_FreeFormat(data->format);
}
if (data->gc) {
XFreeGC(data->display, data->gc);
}
SDL_FreeDirtyRects(&data->dirty);
SDL_free(data);
}
SDL_free(renderer);
}
#endif /* SDL_VIDEO_RENDER_X11 */
/* vi: set ts=4 sw=4 expandtab: */