This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_gdirender.c
814 lines (731 loc) · 24.9 KB
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
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
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);
58
static int GDI_SetDrawBlendMode(SDL_Renderer * renderer);
59
60
61
static int GDI_RenderPoint(SDL_Renderer * renderer, int x, int y);
static int GDI_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2,
int y2);
62
static int GDI_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect);
63
static int GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
64
const SDL_Rect * srcrect, const SDL_Rect * dstrect);
65
66
67
68
69
70
71
72
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,
73
74
{
"gdi",
75
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
76
SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
77
SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_ACCELERATED),
78
(SDL_TEXTUREMODULATE_NONE | SDL_TEXTUREMODULATE_ALPHA),
79
(SDL_BLENDMODE_NONE | SDL_BLENDMODE_MASK),
80
(SDL_TEXTURESCALEMODE_NONE | SDL_TEXTURESCALEMODE_FAST),
81
14,
82
{
83
84
85
86
87
88
89
90
91
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,
92
93
SDL_PIXELFORMAT_YV12,
SDL_PIXELFORMAT_IYUV,
94
SDL_PIXELFORMAT_YUY2,
95
96
SDL_PIXELFORMAT_UYVY,
SDL_PIXELFORMAT_YVYU},
97
98
99
100
101
102
103
104
105
106
107
108
0,
0}
};
typedef struct
{
HWND hwnd;
HDC window_hdc;
HDC render_hdc;
HDC memory_hdc;
HDC current_hdc;
LPBITMAPINFO bmi;
109
110
111
112
HBITMAP hbm[3];
int current_hbm;
SDL_DirtyRectList dirty;
SDL_bool makedirty;
113
} GDI_RenderData;
114
115
116
117
118
119
120
121
122
typedef struct
{
SDL_SW_YUVTexture *yuv;
Uint32 format;
HPALETTE hpal;
HBITMAP hbm;
void *pixels;
int pitch;
123
} GDI_TextureData;
124
125
126
127
static void
UpdateYUVTextureData(SDL_Texture * texture)
{
128
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
129
130
131
132
133
134
135
136
137
138
139
140
141
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)
{
142
SDL_AddRenderDriver(0, &GDI_RenderDriver);
143
144
145
}
SDL_Renderer *
146
GDI_CreateRenderer(SDL_Window * window, Uint32 flags)
147
148
149
{
SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata;
SDL_Renderer *renderer;
150
GDI_RenderData *data;
151
152
int bmi_size;
HBITMAP hbm;
153
int i, n;
154
155
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
156
157
158
159
160
if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
161
data = (GDI_RenderData *) SDL_calloc(1, sizeof(*data));
162
if (!data) {
163
GDI_DestroyRenderer(renderer);
164
165
166
167
SDL_OutOfMemory();
return NULL;
}
168
renderer->DisplayModeChanged = GDI_DisplayModeChanged;
169
170
171
172
renderer->CreateTexture = GDI_CreateTexture;
renderer->QueryTexturePixels = GDI_QueryTexturePixels;
renderer->SetTexturePalette = GDI_SetTexturePalette;
renderer->GetTexturePalette = GDI_GetTexturePalette;
173
174
175
renderer->SetTextureAlphaMod = GDI_SetTextureAlphaMod;
renderer->SetTextureBlendMode = GDI_SetTextureBlendMode;
renderer->SetTextureScaleMode = GDI_SetTextureScaleMode;
176
177
178
renderer->UpdateTexture = GDI_UpdateTexture;
renderer->LockTexture = GDI_LockTexture;
renderer->UnlockTexture = GDI_UnlockTexture;
179
renderer->SetDrawBlendMode = GDI_SetDrawBlendMode;
180
181
renderer->RenderPoint = GDI_RenderPoint;
renderer->RenderLine = GDI_RenderLine;
182
183
184
185
186
187
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;
188
189
190
renderer->window = window->id;
renderer->driverdata = data;
191
renderer->info.flags = SDL_RENDERER_ACCELERATED;
192
193
data->hwnd = windowdata->hwnd;
194
data->window_hdc = windowdata->hdc;
195
196
197
198
199
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);
200
data->bmi = (LPBITMAPINFO) SDL_calloc(1, bmi_size);
201
if (!data->bmi) {
202
GDI_DestroyRenderer(renderer);
203
204
205
206
207
208
209
210
211
212
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);
213
if (flags & SDL_RENDERER_SINGLEBUFFER) {
214
renderer->info.flags |=
215
(SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY);
216
n = 0;
217
218
} else if (flags & SDL_RENDERER_PRESENTFLIP2) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
219
n = 2;
220
221
} else if (flags & SDL_RENDERER_PRESENTFLIP3) {
renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
222
223
n = 3;
} else {
224
renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
225
226
227
228
229
230
n = 1;
}
for (i = 0; i < n; ++i) {
data->hbm[i] =
CreateCompatibleBitmap(data->window_hdc, window->w, window->h);
if (!data->hbm[i]) {
231
GDI_DestroyRenderer(renderer);
232
233
234
235
236
237
238
239
240
241
242
243
244
245
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;
246
247
248
return renderer;
}
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
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]);
}
282
283
data->current_hbm = 0;
284
285
286
return 0;
}
287
static int
288
GDI_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
289
{
290
GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
291
292
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
293
GDI_TextureData *data;
294
295
data = (GDI_TextureData *) SDL_calloc(1, sizeof(*data));
296
297
298
299
300
301
302
303
if (!data) {
SDL_OutOfMemory();
return -1;
}
texture->driverdata = data;
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
304
305
data->yuv =
SDL_SW_CreateYUVTexture(texture->format, texture->w, texture->h);
306
307
308
309
310
311
312
313
314
if (!data->yuv) {
return -1;
}
data->format = display->current_mode.format;
} else {
data->format = texture->format;
}
data->pitch = (texture->w * SDL_BYTESPERPIXEL(data->format));
315
if (data->yuv || texture->access == SDL_TEXTUREACCESS_STREAMING
316
|| texture->format != display->current_mode.format) {
317
318
319
320
int bmi_size;
LPBITMAPINFO bmi;
bmi_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD);
321
bmi = (LPBITMAPINFO) SDL_calloc(1, bmi_size);
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
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
389
390
GDI_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
void **pixels, int *pitch)
391
{
392
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
393
394
395
396
397
if (data->yuv) {
return SDL_SW_QueryYUVTexturePixels(data->yuv, pixels, pitch);
} else {
*pixels = data->pixels;
398
*pitch = data->pitch;
399
400
401
402
403
return 0;
}
}
static int
404
405
GDI_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Color * colors, int firstcolor, int ncolors)
406
{
407
408
GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
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
432
433
GDI_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
SDL_Color * colors, int firstcolor, int ncolors)
434
{
435
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
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;
}
}
457
458
459
460
461
462
463
464
465
466
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) {
467
468
469
case SDL_BLENDMODE_NONE:
case SDL_BLENDMODE_MASK:
case SDL_BLENDMODE_BLEND:
470
471
472
return 0;
default:
SDL_Unsupported();
473
texture->blendMode = SDL_BLENDMODE_NONE;
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
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;
}
498
static int
499
500
GDI_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
501
{
502
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
503
504
505
506
507
508
509
510
if (data->yuv) {
if (SDL_SW_UpdateYUVTexture(data->yuv, rect, pixels, pitch) < 0) {
return -1;
}
UpdateYUVTextureData(texture);
return 0;
} else {
511
GDI_RenderData *renderdata = (GDI_RenderData *) renderer->driverdata;
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
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
545
546
547
GDI_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch)
548
{
549
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
550
551
552
553
if (data->yuv) {
return SDL_SW_LockYUVTexture(data->yuv, rect, markDirty, pixels,
pitch);
554
} else if (data->pixels) {
555
556
557
558
559
560
GdiFlush();
*pixels =
(void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch = data->pitch;
return 0;
561
562
563
} else {
SDL_SetError("No pixels available");
return -1;
564
565
566
567
}
}
static void
568
GDI_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
569
{
570
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
571
572
573
574
575
576
577
if (data->yuv) {
SDL_SW_UnlockYUVTexture(data->yuv);
UpdateYUVTextureData(texture);
}
}
578
579
580
581
582
583
584
585
586
587
588
589
590
static int
GDI_SetDrawBlendMode(SDL_Renderer * renderer)
{
switch (renderer->blendMode) {
case SDL_BLENDMODE_NONE:
return 0;
default:
SDL_Unsupported();
renderer->blendMode = SDL_BLENDMODE_NONE;
return -1;
}
}
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
static int
GDI_RenderPoint(SDL_Renderer * renderer, int x, int y)
{
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
if (data->makedirty) {
SDL_Rect rect;
rect.x = x;
rect.y = y;
rect.w = 1;
rect.h = 1;
SDL_AddDirtyRect(&data->dirty, &rect);
}
607
608
SetPixel(data->current_hdc, x, y,
RGB(renderer->r, renderer->g, renderer->b));
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
652
653
654
655
656
return 0;
}
static int
GDI_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2, int y2)
{
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
POINT points[2];
HBRUSH brush;
BOOL status;
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);
}
/* Should we cache the brushes? .. it looks like GDI does for us. :) */
brush = CreateSolidBrush(RGB(renderer->r, renderer->g, renderer->b));
SelectObject(data->current_hdc, brush);
points[0].x = x1;
points[0].y = y1;
points[1].x = x2;
points[1].y = y2;
status = Polyline(data->current_hdc, points, 2);
DeleteObject(brush);
if (!status) {
WIN_SetError("FillRect()");
return -1;
}
return 0;
}
657
static int
658
GDI_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect)
659
{
660
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
661
RECT rc;
662
HBRUSH brush;
663
664
int status;
665
666
667
668
if (data->makedirty) {
SDL_AddDirtyRect(&data->dirty, rect);
}
669
670
671
672
673
674
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. :) */
675
brush = CreateSolidBrush(RGB(renderer->r, renderer->g, renderer->b));
676
677
678
679
680
681
682
683
684
685
686
687
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
688
GDI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
689
const SDL_Rect * srcrect, const SDL_Rect * dstrect)
690
{
691
692
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
GDI_TextureData *texturedata = (GDI_TextureData *) texture->driverdata;
693
694
695
696
697
if (data->makedirty) {
SDL_AddDirtyRect(&data->dirty, dstrect);
}
698
699
700
701
702
SelectObject(data->memory_hdc, texturedata->hbm);
if (texturedata->hpal) {
SelectPalette(data->memory_hdc, texturedata->hpal, TRUE);
RealizePalette(data->memory_hdc);
}
703
if (texture->blendMode & SDL_BLENDMODE_MASK) {
704
BLENDFUNCTION blendFunc = {
705
706
AC_SRC_OVER,
0,
707
texture->a,
708
709
AC_SRC_ALPHA
};
710
711
712
/* FIXME: GDI uses premultiplied alpha!
* Once we solve this and somehow support blended drawing we can enable SDL_BLENDMODE_BLEND
*/
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
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
743
GDI_RenderPresent(SDL_Renderer * renderer)
744
{
745
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
746
747
748
SDL_DirtyRect *dirty;
/* Send the data to the display */
749
if (!(renderer->info.flags & SDL_RENDERER_SINGLEBUFFER)) {
750
751
752
753
754
755
756
757
758
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 */
759
if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
760
761
data->current_hbm = (data->current_hbm + 1) % 2;
SelectObject(data->render_hdc, data->hbm[data->current_hbm]);
762
} else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
763
764
765
data->current_hbm = (data->current_hbm + 1) % 3;
SelectObject(data->render_hdc, data->hbm[data->current_hbm]);
}
766
767
768
}
static void
769
GDI_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
770
{
771
GDI_TextureData *data = (GDI_TextureData *) texture->driverdata;
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
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;
}
789
static void
790
GDI_DestroyRenderer(SDL_Renderer * renderer)
791
{
792
GDI_RenderData *data = (GDI_RenderData *) renderer->driverdata;
793
int i;
794
795
796
797
798
799
800
if (data) {
DeleteDC(data->render_hdc);
DeleteDC(data->memory_hdc);
if (data->bmi) {
SDL_free(data->bmi);
}
801
802
803
804
805
806
for (i = 0; i < SDL_arraysize(data->hbm); ++i) {
if (data->hbm[i]) {
DeleteObject(data->hbm[i]);
}
}
SDL_FreeDirtyRects(&data->dirty);
807
808
809
810
811
812
813
814
SDL_free(data);
}
SDL_free(renderer);
}
#endif /* SDL_VIDEO_RENDER_GDI */
/* vi: set ts=4 sw=4 expandtab: */