This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_gdirender.c
734 lines (662 loc) · 23.1 KB
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
/*
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_RENDER_GDI
#include "SDL_win32video.h"
27
#include "../SDL_rect_c.h"
28
29
30
31
#include "../SDL_yuv_sw_c.h"
/* GDI renderer implementation */
32
static SDL_Renderer *GDI_CreateRenderer(SDL_Window * window, Uint32 flags);
33
static int GDI_DisplayModeChanged(SDL_Renderer * renderer);
34
35
36
37
38
39
40
41
42
43
44
static int GDI_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int GDI_QueryTexturePixels(SDL_Renderer * renderer,
SDL_Texture * texture, void **pixels,
int *pitch);
static int GDI_SetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Color * colors, int firstcolor,
int ncolors);
static int GDI_GetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture, SDL_Color * colors,
int firstcolor, int ncolors);
45
46
47
48
49
50
static int GDI_SetTextureAlphaMod(SDL_Renderer * renderer,
SDL_Texture * texture);
static int GDI_SetTextureBlendMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int GDI_SetTextureScaleMode(SDL_Renderer * renderer,
SDL_Texture * texture);
51
52
53
54
55
56
57
58
59
static int GDI_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels,
int pitch);
static int GDI_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty,
void **pixels, int *pitch);
static void GDI_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static void GDI_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
int numrects, const SDL_Rect * rects);
60
61
static int GDI_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b,
Uint8 a, const SDL_Rect * rect);
62
static int GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
63
const SDL_Rect * srcrect, const SDL_Rect * dstrect);
64
65
66
67
68
69
70
71
static void GDI_RenderPresent(SDL_Renderer * renderer);
static void GDI_DestroyTexture(SDL_Renderer * renderer,
SDL_Texture * texture);
static void GDI_DestroyRenderer(SDL_Renderer * renderer);
SDL_RenderDriver GDI_RenderDriver = {
GDI_CreateRenderer,
72
73
{
"gdi",
74
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
75
SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
76
SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_ACCELERATED),
77
(SDL_TEXTUREMODULATE_NONE | SDL_TEXTUREMODULATE_ALPHA),
78
79
80
(SDL_TEXTUREBLENDMODE_NONE | SDL_TEXTUREBLENDMODE_MASK |
SDL_TEXTUREBLENDMODE_BLEND),
(SDL_TEXTURESCALEMODE_NONE | SDL_TEXTURESCALEMODE_FAST),
81
82
11,
{
83
84
85
86
87
88
89
90
91
92
93
SDL_PIXELFORMAT_INDEX8,
SDL_PIXELFORMAT_RGB555,
SDL_PIXELFORMAT_RGB565,
SDL_PIXELFORMAT_RGB888,
SDL_PIXELFORMAT_BGR888,
SDL_PIXELFORMAT_ARGB8888,
SDL_PIXELFORMAT_RGBA8888,
SDL_PIXELFORMAT_ABGR8888,
SDL_PIXELFORMAT_BGRA8888,
SDL_PIXELFORMAT_YUY2,
SDL_PIXELFORMAT_UYVY},
94
95
96
97
98
99
100
101
102
103
104
105
0,
0}
};
typedef struct
{
HWND hwnd;
HDC window_hdc;
HDC render_hdc;
HDC memory_hdc;
HDC current_hdc;
LPBITMAPINFO bmi;
106
107
108
109
HBITMAP hbm[3];
int current_hbm;
SDL_DirtyRectList dirty;
SDL_bool makedirty;
110
} GDI_RenderData;
111
112
113
114
115
116
117
118
119
typedef struct
{
SDL_SW_YUVTexture *yuv;
Uint32 format;
HPALETTE hpal;
HBITMAP hbm;
void *pixels;
int pitch;
120
} GDI_TextureData;
121
122
123
124
static void
UpdateYUVTextureData(SDL_Texture * texture)
{
125
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
126
127
128
129
130
131
132
133
134
135
136
137
138
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
GDI_AddRenderDriver(_THIS)
{
139
SDL_AddRenderDriver(0, &GDI_RenderDriver);
140
141
142
}
SDL_Renderer *
143
GDI_CreateRenderer(SDL_Window * window, Uint32 flags)
144
145
146
{
SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
SDL_Renderer *renderer;
147
GDI_RenderData *data;
148
149
int bmi_size;
HBITMAP hbm;
150
int i, n;
151
152
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
153
154
155
156
157
if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
158
data = (GDI_RenderData *) SDL_calloc(1, sizeof(*data));
159
if (!data) {
160
GDI_DestroyRenderer(renderer);
161
162
163
164
SDL_OutOfMemory();
return NULL;
}
165
renderer->DisplayModeChanged = GDI_DisplayModeChanged;
166
167
168
169
renderer->CreateTexture = GDI_CreateTexture;
renderer->QueryTexturePixels = GDI_QueryTexturePixels;
renderer->SetTexturePalette = GDI_SetTexturePalette;
renderer->GetTexturePalette = GDI_GetTexturePalette;
170
171
172
renderer->SetTextureAlphaMod = GDI_SetTextureAlphaMod;
renderer->SetTextureBlendMode = GDI_SetTextureBlendMode;
renderer->SetTextureScaleMode = GDI_SetTextureScaleMode;
173
174
175
176
177
178
179
180
181
182
renderer->UpdateTexture = GDI_UpdateTexture;
renderer->LockTexture = GDI_LockTexture;
renderer->UnlockTexture = GDI_UnlockTexture;
renderer->DirtyTexture = GDI_DirtyTexture;
renderer->RenderFill = GDI_RenderFill;
renderer->RenderCopy = GDI_RenderCopy;
renderer->RenderPresent = GDI_RenderPresent;
renderer->DestroyTexture = GDI_DestroyTexture;
renderer->DestroyRenderer = GDI_DestroyRenderer;
renderer->info = GDI_RenderDriver.info;
183
184
185
renderer->window = window->id;
renderer->driverdata = data;
186
renderer->info.flags = SDL_RENDERER_ACCELERATED;
187
188
data->hwnd = windowdata->hwnd;
189
data->window_hdc = windowdata->hdc;
190
191
192
193
194
data->render_hdc = CreateCompatibleDC(data->window_hdc);
data->memory_hdc = CreateCompatibleDC(data->window_hdc);
/* Fill in the compatible bitmap info */
bmi_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);
195
data->bmi = (LPBITMAPINFO) SDL_calloc(1, bmi_size);
196
if (!data->bmi) {
197
GDI_DestroyRenderer(renderer);
198
199
200
201
202
203
204
205
206
207
SDL_OutOfMemory();
return NULL;
}
data->bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
hbm = CreateCompatibleBitmap(data->window_hdc, 1, 1);
GetDIBits(data->window_hdc, hbm, 0, 1, NULL, data->bmi, DIB_RGB_COLORS);
GetDIBits(data->window_hdc, hbm, 0, 1, NULL, data->bmi, DIB_RGB_COLORS);
DeleteObject(hbm);
208
if (flags & SDL_RENDERER_SINGLEBUFFER) {
209
renderer->info.flags |=
210
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY);
211
n = 0;
212
213
} else if (flags & SDL_RENDERER_PRESENTFLIP2) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
214
n = 2;
215
216
} else if (flags & SDL_RENDERER_PRESENTFLIP3) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
217
218
n = 3;
} else {
219
renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
220
221
222
223
224
225
n = 1;
}
for (i = 0; i < n; ++i) {
data->hbm[i] =
CreateCompatibleBitmap(data->window_hdc, window->w, window->h);
if (!data->hbm[i]) {
226
GDI_DestroyRenderer(renderer);
227
228
229
230
231
232
233
234
235
236
237
238
239
240
WIN_SetError("CreateCompatibleBitmap()");
return NULL;
}
}
if (n > 0) {
SelectObject(data->render_hdc, data->hbm[0]);
data->current_hdc = data->render_hdc;
data->makedirty = SDL_TRUE;
} else {
data->current_hdc = data->window_hdc;
data->makedirty = SDL_FALSE;
}
data->current_hbm = 0;
241
242
243
return renderer;
}
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
static int
GDI_DisplayModeChanged(SDL_Renderer * renderer)
{
GDI_RenderData *data = (GDI_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->hbm[i]) {
DeleteObject(data->hbm[i]);
data->hbm[i] = NULL;
}
}
for (i = 0; i < n; ++i) {
data->hbm[i] =
CreateCompatibleBitmap(data->window_hdc, window->w, window->h);
if (!data->hbm[i]) {
WIN_SetError("CreateCompatibleBitmap()");
return -1;
}
}
if (n > 0) {
SelectObject(data->render_hdc, data->hbm[0]);
}
return 0;
}
280
static int
281
GDI_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
282
{
283
GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
284
285
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
286
GDI_TextureData *data;
287
288
data = (GDI_TextureData *) SDL_calloc(1, sizeof(*data));
289
290
291
292
293
294
295
296
if (!data) {
SDL_OutOfMemory();
return -1;
}
texture->driverdata = data;
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
297
298
data->yuv =
SDL_SW_CreateYUVTexture(texture->format, texture->w, texture->h);
299
300
301
302
303
304
305
306
307
if (!data->yuv) {
return -1;
}
data->format = display->current_mode.format;
} else {
data->format = texture->format;
}
data->pitch = (texture->w * SDL_BYTESPERPIXEL(data->format));
308
if (data->yuv || texture->access == SDL_TEXTUREACCESS_STREAMING
309
|| texture->format != display->current_mode.format) {
310
311
312
313
int bmi_size;
LPBITMAPINFO bmi;
bmi_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);
314
bmi = (LPBITMAPINFO) SDL_calloc(1, bmi_size);
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
if (!bmi) {
SDL_OutOfMemory();
return -1;
}
bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi->bmiHeader.biWidth = texture->w;
bmi->bmiHeader.biHeight = -texture->h; /* topdown bitmap */
bmi->bmiHeader.biPlanes = 1;
bmi->bmiHeader.biSizeImage = texture->h * data->pitch;
bmi->bmiHeader.biXPelsPerMeter = 0;
bmi->bmiHeader.biYPelsPerMeter = 0;
bmi->bmiHeader.biClrUsed = 0;
bmi->bmiHeader.biClrImportant = 0;
bmi->bmiHeader.biBitCount = SDL_BYTESPERPIXEL(data->format) * 8;
if (SDL_ISPIXELFORMAT_INDEXED(data->format)) {
int i, ncolors;
LOGPALETTE *palette;
bmi->bmiHeader.biCompression = BI_RGB;
ncolors = (1 << SDL_BITSPERPIXEL(data->format));
palette =
(LOGPALETTE *) SDL_malloc(sizeof(*palette) +
ncolors * sizeof(PALETTEENTRY));
if (!palette) {
SDL_free(bmi);
SDL_OutOfMemory();
return -1;
}
palette->palVersion = 0x300;
palette->palNumEntries = ncolors;
for (i = 0; i < ncolors; ++i) {
palette->palPalEntry[i].peRed = 0xFF;
palette->palPalEntry[i].peGreen = 0xFF;
palette->palPalEntry[i].peBlue = 0xFF;
palette->palPalEntry[i].peFlags = 0;
}
data->hpal = CreatePalette(palette);
SDL_free(palette);
} else {
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
bmi->bmiHeader.biCompression = BI_BITFIELDS;
SDL_PixelFormatEnumToMasks(data->format, &bpp, &Rmask, &Gmask,
&Bmask, &Amask);
((Uint32 *) bmi->bmiColors)[0] = Rmask;
((Uint32 *) bmi->bmiColors)[1] = Gmask;
((Uint32 *) bmi->bmiColors)[2] = Bmask;
data->hpal = NULL;
}
data->hbm =
CreateDIBSection(renderdata->memory_hdc, bmi, DIB_RGB_COLORS,
&data->pixels, NULL, 0);
} else {
data->hbm =
CreateCompatibleBitmap(renderdata->window_hdc, texture->w,
texture->h);
data->pixels = NULL;
}
if (!data->hbm) {
WIN_SetError("Couldn't create bitmap");
return -1;
}
return 0;
}
static int
382
383
GDI_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
void **pixels, int *pitch)
384
{
385
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
386
387
388
389
390
if (data->yuv) {
return SDL_SW_QueryYUVTexturePixels(data->yuv, pixels, pitch);
} else {
*pixels = data->pixels;
391
*pitch = data->pitch;
392
393
394
395
396
return 0;
}
}
static int
397
398
GDI_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Color * colors, int firstcolor, int ncolors)
399
{
400
401
GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
if (data->yuv) {
SDL_SetError("YUV textures don't have a palette");
return -1;
} else {
PALETTEENTRY entries[256];
int i;
for (i = 0; i < ncolors; ++i) {
entries[i].peRed = colors[i].r;
entries[i].peGreen = colors[i].g;
entries[i].peBlue = colors[i].b;
entries[i].peFlags = 0;
}
if (!SetPaletteEntries(data->hpal, firstcolor, ncolors, entries)) {
WIN_SetError("SetPaletteEntries()");
return -1;
}
return 0;
}
}
static int
425
426
GDI_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
SDL_Color * colors, int firstcolor, int ncolors)
427
{
428
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
if (data->yuv) {
SDL_SetError("YUV textures don't have a palette");
return -1;
} else {
PALETTEENTRY entries[256];
int i;
if (!GetPaletteEntries(data->hpal, firstcolor, ncolors, entries)) {
WIN_SetError("GetPaletteEntries()");
return -1;
}
for (i = 0; i < ncolors; ++i) {
colors[i].r = entries[i].peRed;
colors[i].g = entries[i].peGreen;
colors[i].b = entries[i].peBlue;
}
return 0;
}
}
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
static int
GDI_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
{
return 0;
}
static int
GDI_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
switch (texture->blendMode) {
case SDL_TEXTUREBLENDMODE_NONE:
case SDL_TEXTUREBLENDMODE_MASK:
case SDL_TEXTUREBLENDMODE_BLEND:
return 0;
default:
SDL_Unsupported();
texture->blendMode = SDL_TEXTUREBLENDMODE_NONE;
return -1;
}
}
static int
GDI_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
switch (texture->scaleMode) {
case SDL_TEXTURESCALEMODE_NONE:
case SDL_TEXTURESCALEMODE_FAST:
return 0;
case SDL_TEXTURESCALEMODE_SLOW:
case SDL_TEXTURESCALEMODE_BEST:
SDL_Unsupported();
texture->scaleMode = SDL_TEXTURESCALEMODE_FAST;
return -1;
default:
SDL_Unsupported();
texture->scaleMode = SDL_TEXTURESCALEMODE_NONE;
return -1;
}
return 0;
}
491
static int
492
493
GDI_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
494
{
495
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
496
497
498
499
500
501
502
503
if (data->yuv) {
if (SDL_SW_UpdateYUVTexture(data->yuv, rect, pixels, pitch) < 0) {
return -1;
}
UpdateYUVTextureData(texture);
return 0;
} else {
504
GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
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
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 if (rect->w == texture->w && pitch == data->pitch) {
if (!SetDIBits
(renderdata->window_hdc, data->hbm, rect->y, rect->h, pixels,
renderdata->bmi, DIB_RGB_COLORS)) {
WIN_SetError("SetDIBits()");
return -1;
}
} else {
SDL_SetError
("FIXME: Need to allocate temporary memory and do GetDIBits() followed by SetDIBits(), since we can only set blocks of scanlines at a time");
return -1;
}
return 0;
}
}
static int
538
539
540
GDI_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch)
541
{
542
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
543
544
545
546
if (data->yuv) {
return SDL_SW_LockYUVTexture(data->yuv, rect, markDirty, pixels,
pitch);
547
} else if (data->pixels) {
548
549
550
551
552
553
GdiFlush();
*pixels =
(void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch = data->pitch;
return 0;
554
555
556
} else {
SDL_SetError("No pixels available");
return -1;
557
558
559
560
}
}
static void
561
GDI_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
562
{
563
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
564
565
566
567
568
569
570
571
if (data->yuv) {
SDL_SW_UnlockYUVTexture(data->yuv);
UpdateYUVTextureData(texture);
}
}
static void
572
573
GDI_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture, int numrects,
const SDL_Rect * rects)
574
575
576
577
{
}
static int
578
579
GDI_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b, Uint8 a,
const SDL_Rect * rect)
580
{
581
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
582
RECT rc;
583
HBRUSH brush;
584
585
int status;
586
587
588
589
if (data->makedirty) {
SDL_AddDirtyRect(&data->dirty, rect);
}
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
rc.left = rect->x;
rc.top = rect->y;
rc.right = rect->x + rect->w + 1;
rc.bottom = rect->y + rect->h + 1;
/* Should we cache the brushes? .. it looks like GDI does for us. :) */
brush = CreateSolidBrush(RGB(r, g, b));
SelectObject(data->current_hdc, brush);
status = FillRect(data->current_hdc, &rc, brush);
DeleteObject(brush);
if (!status) {
WIN_SetError("FillRect()");
return -1;
}
return 0;
}
static int
609
GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
610
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
611
{
612
613
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
GDI_TextureData *texturedata = (GDI_TextureData *) texture->driverdata;
614
615
616
617
618
if (data->makedirty) {
SDL_AddDirtyRect(&data->dirty, dstrect);
}
619
620
621
622
623
SelectObject(data->memory_hdc, texturedata->hbm);
if (texturedata->hpal) {
SelectPalette(data->memory_hdc, texturedata->hpal, TRUE);
RealizePalette(data->memory_hdc);
}
624
625
if (texture->blendMode &
(SDL_TEXTUREBLENDMODE_MASK | SDL_TEXTUREBLENDMODE_BLEND)) {
626
BLENDFUNCTION blendFunc = {
627
628
AC_SRC_OVER,
0,
629
texture->a,
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
AC_SRC_ALPHA
};
/* FIXME: GDI uses premultiplied alpha! */
if (!AlphaBlend
(data->current_hdc, dstrect->x, dstrect->y, dstrect->w,
dstrect->h, data->memory_hdc, srcrect->x, srcrect->y, srcrect->w,
srcrect->h, blendFunc)) {
WIN_SetError("AlphaBlend()");
return -1;
}
} else {
if (srcrect->w == dstrect->w && srcrect->h == dstrect->h) {
if (!BitBlt
(data->current_hdc, dstrect->x, dstrect->y, dstrect->w,
srcrect->h, data->memory_hdc, srcrect->x, srcrect->y,
SRCCOPY)) {
WIN_SetError("BitBlt()");
return -1;
}
} else {
if (!StretchBlt
(data->current_hdc, dstrect->x, dstrect->y, dstrect->w,
dstrect->h, data->memory_hdc, srcrect->x, srcrect->y,
srcrect->w, srcrect->h, SRCCOPY)) {
WIN_SetError("StretchBlt()");
return -1;
}
}
}
return 0;
}
static void
663
GDI_RenderPresent(SDL_Renderer * renderer)
664
{
665
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
666
667
668
SDL_DirtyRect *dirty;
/* Send the data to the display */
669
if (!(renderer->info.flags & SDL_RENDERER_SINGLEBUFFER)) {
670
671
672
673
674
675
676
677
678
for (dirty = data->dirty.list; dirty; dirty = dirty->next) {
const SDL_Rect *rect = &dirty->rect;
BitBlt(data->window_hdc, rect->x, rect->y, rect->w, rect->h,
data->render_hdc, rect->x, rect->y, SRCCOPY);
}
SDL_ClearDirtyRects(&data->dirty);
}
/* Update the flipping chain, if any */
679
if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
680
681
data->current_hbm = (data->current_hbm + 1) % 2;
SelectObject(data->render_hdc, data->hbm[data->current_hbm]);
682
} else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
683
684
685
data->current_hbm = (data->current_hbm + 1) % 3;
SelectObject(data->render_hdc, data->hbm[data->current_hbm]);
}
686
687
688
}
static void
689
GDI_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
690
{
691
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
if (!data) {
return;
}
if (data->yuv) {
SDL_SW_DestroyYUVTexture(data->yuv);
}
if (data->hpal) {
DeleteObject(data->hpal);
}
if (data->hbm) {
DeleteObject(data->hbm);
}
SDL_free(data);
texture->driverdata = NULL;
}
709
static void
710
GDI_DestroyRenderer(SDL_Renderer * renderer)
711
{
712
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
713
int i;
714
715
716
717
718
719
720
if (data) {
DeleteDC(data->render_hdc);
DeleteDC(data->memory_hdc);
if (data->bmi) {
SDL_free(data->bmi);
}
721
722
723
724
725
726
for (i = 0; i < SDL_arraysize(data->hbm); ++i) {
if (data->hbm[i]) {
DeleteObject(data->hbm[i]);
}
}
SDL_FreeDirtyRects(&data->dirty);
727
728
729
730
731
732
733
734
SDL_free(data);
}
SDL_free(renderer);
}
#endif /* SDL_VIDEO_RENDER_GDI */
/* vi: set ts=4 sw=4 expandtab: */