/
testvidinfo.c
465 lines (426 loc) · 12.7 KB
1
2
3
/* Simple program -- figure out what kind of video display we have */
4
#include <stdlib.h>
5
6
#include <stdio.h>
#include <stdlib.h>
7
#include <string.h>
8
9
10
#include "SDL.h"
11
12
13
#define NUM_BLITS 10
#define NUM_UPDATES 500
14
15
16
#define FLAG_MASK (SDL_HWSURFACE | SDL_FULLSCREEN | SDL_DOUBLEBUF | \
SDL_SRCCOLORKEY | SDL_SRCALPHA | SDL_RLEACCEL | \
SDL_RLEACCELOK)
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
void PrintFlags(Uint32 flags)
{
printf("0x%8.8x", (flags & FLAG_MASK));
if ( flags & SDL_HWSURFACE ) {
printf(" SDL_HWSURFACE");
} else {
printf(" SDL_SWSURFACE");
}
if ( flags & SDL_FULLSCREEN ) {
printf(" | SDL_FULLSCREEN");
}
if ( flags & SDL_DOUBLEBUF ) {
printf(" | SDL_DOUBLEBUF");
}
32
33
34
if ( flags & SDL_SRCCOLORKEY ) {
printf(" | SDL_SRCCOLORKEY");
}
35
36
37
if ( flags & SDL_SRCALPHA ) {
printf(" | SDL_SRCALPHA");
}
38
39
40
if ( flags & SDL_RLEACCEL ) {
printf(" | SDL_RLEACCEL");
}
41
42
43
if ( flags & SDL_RLEACCELOK ) {
printf(" | SDL_RLEACCELOK");
}
44
45
46
47
48
49
50
}
int RunBlitTests(SDL_Surface *screen, SDL_Surface *bmp, int blitcount)
{
int i, j;
int maxx;
int maxy;
51
SDL_Rect dst;
52
53
54
55
maxx = (int)screen->w - bmp->w + 1;
maxy = (int)screen->h - bmp->h + 1;
for ( i = 0; i < NUM_UPDATES; ++i ) {
56
57
for ( j = 0; j < blitcount; ++j ) {
if ( maxx ) {
58
dst.x = rand() % maxx;
59
} else {
60
dst.x = 0;
61
62
}
if ( maxy ) {
63
dst.y = rand() % maxy;
64
} else {
65
dst.y = 0;
66
}
67
68
69
dst.w = bmp->w;
dst.h = bmp->h;
SDL_BlitSurface(bmp, NULL, screen, &dst);
70
}
71
SDL_Flip(screen);
72
73
74
75
76
}
return i;
}
77
int RunModeTests(SDL_Surface *screen)
78
79
80
{
Uint32 then, now;
Uint32 frames;
81
float seconds;
82
83
int i;
Uint8 r, g, b;
84
SDL_Surface *bmp, *bmpcc, *tmp;
85
86
87
88
89
90
SDL_Event event;
while ( SDL_PollEvent(&event) ) {
if ( event.type == SDL_KEYDOWN )
return 0;
}
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
/* First test fills and screen update speed */
printf("Running color fill and fullscreen update test\n");
then = SDL_GetTicks();
frames = 0;
for ( i = 0; i < 256; ++i ) {
r = i;
g = 0;
b = 0;
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, r, g, b));
SDL_Flip(screen);
++frames;
}
for ( i = 0; i < 256; ++i ) {
r = 0;
g = i;
b = 0;
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, r, g, b));
SDL_Flip(screen);
++frames;
}
for ( i = 0; i < 256; ++i ) {
r = 0;
g = 0;
b = i;
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, r, g, b));
SDL_Flip(screen);
++frames;
}
now = SDL_GetTicks();
121
122
123
124
125
126
127
seconds = (float)(now - then) / 1000.0f;
if ( seconds > 0.0f ) {
printf("%d fills and flips in %2.2f seconds, %2.2f FPS\n", frames, seconds, (float)frames / seconds);
} else {
printf("%d fills and flips in zero seconds!n", frames);
}
128
129
130
131
/* clear the screen after fill test */
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
SDL_Flip(screen);
132
133
134
135
while ( SDL_PollEvent(&event) ) {
if ( event.type == SDL_KEYDOWN )
return 0;
}
136
137
/* run the generic blit test */
138
139
140
bmp = SDL_LoadBMP("sample.bmp");
if ( ! bmp ) {
printf("Couldn't load sample.bmp: %s\n", SDL_GetError());
141
return 0;
142
143
144
145
146
147
}
printf("Running freshly loaded blit test: %dx%d at %d bpp, flags: ",
bmp->w, bmp->h, bmp->format->BitsPerPixel);
PrintFlags(bmp->flags);
printf("\n");
then = SDL_GetTicks();
148
frames = RunBlitTests(screen, bmp, NUM_BLITS);
149
now = SDL_GetTicks();
150
151
152
153
154
seconds = (float)(now - then) / 1000.0f;
if ( seconds > 0.0f ) {
printf("%d blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
} else {
printf("%d blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
155
156
}
157
158
159
160
161
162
163
164
165
/* clear the screen after blit test */
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
SDL_Flip(screen);
while ( SDL_PollEvent(&event) ) {
if ( event.type == SDL_KEYDOWN )
return 0;
}
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
/* run the colorkeyed blit test */
bmpcc = SDL_LoadBMP("sample.bmp");
if ( ! bmpcc ) {
printf("Couldn't load sample.bmp: %s\n", SDL_GetError());
return 0;
}
printf("Running freshly loaded cc blit test: %dx%d at %d bpp, flags: ",
bmpcc->w, bmpcc->h, bmpcc->format->BitsPerPixel);
SDL_SetColorKey(bmpcc, SDL_SRCCOLORKEY | SDL_RLEACCEL, *(Uint8 *)bmpcc->pixels);
PrintFlags(bmpcc->flags);
printf("\n");
then = SDL_GetTicks();
frames = RunBlitTests(screen, bmpcc, NUM_BLITS);
now = SDL_GetTicks();
seconds = (float)(now - then) / 1000.0f;
if ( seconds > 0.0f ) {
printf("%d cc blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
} else {
printf("%d cc blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
}
188
189
190
191
192
193
194
195
196
/* clear the screen after cc blit test */
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
SDL_Flip(screen);
while ( SDL_PollEvent(&event) ) {
if ( event.type == SDL_KEYDOWN )
return 0;
}
197
/* run the generic blit test */
198
199
200
201
202
tmp = bmp;
bmp = SDL_DisplayFormat(bmp);
SDL_FreeSurface(tmp);
if ( ! bmp ) {
printf("Couldn't convert sample.bmp: %s\n", SDL_GetError());
203
return 0;
204
205
206
207
208
209
}
printf("Running display format blit test: %dx%d at %d bpp, flags: ",
bmp->w, bmp->h, bmp->format->BitsPerPixel);
PrintFlags(bmp->flags);
printf("\n");
then = SDL_GetTicks();
210
frames = RunBlitTests(screen, bmp, NUM_BLITS);
211
now = SDL_GetTicks();
212
213
214
215
216
seconds = (float)(now - then) / 1000.0f;
if ( seconds > 0.0f ) {
printf("%d blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
} else {
printf("%d blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
217
}
218
219
220
221
222
223
224
225
226
227
/* clear the screen after blit test */
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
SDL_Flip(screen);
while ( SDL_PollEvent(&event) ) {
if ( event.type == SDL_KEYDOWN )
return 0;
}
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
/* run the colorkeyed blit test */
tmp = bmpcc;
bmpcc = SDL_DisplayFormat(bmpcc);
SDL_FreeSurface(tmp);
if ( ! bmpcc ) {
printf("Couldn't convert sample.bmp: %s\n", SDL_GetError());
return 0;
}
printf("Running display format cc blit test: %dx%d at %d bpp, flags: ",
bmpcc->w, bmpcc->h, bmpcc->format->BitsPerPixel);
PrintFlags(bmpcc->flags);
printf("\n");
then = SDL_GetTicks();
frames = RunBlitTests(screen, bmpcc, NUM_BLITS);
now = SDL_GetTicks();
seconds = (float)(now - then) / 1000.0f;
if ( seconds > 0.0f ) {
printf("%d cc blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
} else {
printf("%d cc blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
}
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
/* clear the screen after cc blit test */
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
SDL_Flip(screen);
while ( SDL_PollEvent(&event) ) {
if ( event.type == SDL_KEYDOWN )
return 0;
}
/* run the alpha blit test only if screen bpp>8 */
if (bmp->format->BitsPerPixel>8)
{
SDL_FreeSurface(bmp);
bmp = SDL_LoadBMP("sample.bmp");
SDL_SetAlpha(bmp, SDL_SRCALPHA, 85); /* 85 - 33% alpha */
tmp = bmp;
bmp = SDL_DisplayFormat(bmp);
SDL_FreeSurface(tmp);
if ( ! bmp ) {
printf("Couldn't convert sample.bmp: %s\n", SDL_GetError());
return 0;
}
printf("Running display format alpha blit test: %dx%d at %d bpp, flags: ",
bmp->w, bmp->h, bmp->format->BitsPerPixel);
PrintFlags(bmp->flags);
printf("\n");
then = SDL_GetTicks();
frames = RunBlitTests(screen, bmp, NUM_BLITS);
now = SDL_GetTicks();
seconds = (float)(now - then) / 1000.0f;
if ( seconds > 0.0f ) {
printf("%d alpha blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
} else {
printf("%d alpha blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
}
}
/* clear the screen after alpha blit test */
SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
SDL_Flip(screen);
while ( SDL_PollEvent(&event) ) {
if ( event.type == SDL_KEYDOWN )
return 0;
}
/* run the cc+alpha blit test only if screen bpp>8 */
if (bmp->format->BitsPerPixel>8)
{
SDL_FreeSurface(bmpcc);
bmpcc = SDL_LoadBMP("sample.bmp");
SDL_SetAlpha(bmpcc, SDL_SRCALPHA, 85); /* 85 - 33% alpha */
SDL_SetColorKey(bmpcc, SDL_SRCCOLORKEY | SDL_RLEACCEL, *(Uint8 *)bmpcc->pixels);
tmp = bmpcc;
bmpcc = SDL_DisplayFormat(bmpcc);
SDL_FreeSurface(tmp);
if ( ! bmpcc ) {
printf("Couldn't convert sample.bmp: %s\n", SDL_GetError());
return 0;
}
printf("Running display format cc+alpha blit test: %dx%d at %d bpp, flags: ",
bmpcc->w, bmpcc->h, bmpcc->format->BitsPerPixel);
PrintFlags(bmpcc->flags);
printf("\n");
then = SDL_GetTicks();
frames = RunBlitTests(screen, bmpcc, NUM_BLITS);
now = SDL_GetTicks();
seconds = (float)(now - then) / 1000.0f;
if ( seconds > 0.0f ) {
printf("%d cc+alpha blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
} else {
printf("%d cc+alpha blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
}
}
325
SDL_FreeSurface(bmpcc);
326
SDL_FreeSurface(bmp);
327
328
329
330
331
332
while ( SDL_PollEvent(&event) ) {
if ( event.type == SDL_KEYDOWN )
return 0;
}
return 1;
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
}
void RunVideoTests()
{
static const struct {
int w, h, bpp;
} mode_list[] = {
{ 640, 480, 8 }, { 640, 480, 16 }, { 640, 480, 32 },
{ 800, 600, 8 }, { 800, 600, 16 }, { 800, 600, 32 },
{ 1024, 768, 8 }, { 1024, 768, 16 }, { 1024, 768, 32 }
};
static const Uint32 flags[] = {
(SDL_SWSURFACE),
(SDL_SWSURFACE | SDL_FULLSCREEN),
(SDL_HWSURFACE | SDL_FULLSCREEN),
(SDL_HWSURFACE | SDL_FULLSCREEN | SDL_DOUBLEBUF)
};
int i, j;
SDL_Surface *screen;
/* Test out several different video mode combinations */
354
355
SDL_WM_SetCaption("SDL Video Benchmark", "vidtest");
SDL_ShowCursor(0);
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
for ( i = 0; i < SDL_TABLESIZE(mode_list); ++i ) {
for ( j = 0; j < SDL_TABLESIZE(flags); ++j ) {
printf("===================================\n");
printf("Setting video mode: %dx%d at %d bpp, flags: ",
mode_list[i].w,
mode_list[i].h,
mode_list[i].bpp);
PrintFlags(flags[j]);
printf("\n");
screen = SDL_SetVideoMode(mode_list[i].w,
mode_list[i].h,
mode_list[i].bpp,
flags[j]);
if ( ! screen ) {
printf("Setting video mode failed: %s\n", SDL_GetError());
continue;
}
if ( (screen->flags & FLAG_MASK) != flags[j] ) {
printf("Flags didn't match: ");
PrintFlags(screen->flags);
printf("\n");
continue;
}
379
380
381
if ( ! RunModeTests(screen) ) {
return;
}
382
383
384
385
}
}
}
386
387
388
389
390
int main(int argc, char *argv[])
{
const SDL_VideoInfo *info;
int i;
SDL_Rect **modes;
391
char driver[128];
392
393
394
395
396
397
if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
fprintf(stderr,
"Couldn't initialize SDL: %s\n", SDL_GetError());
exit(1);
}
398
399
400
if ( SDL_VideoDriverName(driver, sizeof(driver)) ) {
printf("Video driver: %s\n", driver);
}
401
402
info = SDL_GetVideoInfo();
printf(
403
404
"Current display: %dx%d, %d bits-per-pixel\n",
info->current_w, info->current_h, info->vfmt->BitsPerPixel);
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
if ( info->vfmt->palette == NULL ) {
printf(" Red Mask = 0x%.8x\n", info->vfmt->Rmask);
printf(" Green Mask = 0x%.8x\n", info->vfmt->Gmask);
printf(" Blue Mask = 0x%.8x\n", info->vfmt->Bmask);
}
/* Print available fullscreen video modes */
modes = SDL_ListModes(NULL, SDL_FULLSCREEN);
if ( modes == (SDL_Rect **)0 ) {
printf("No available fullscreen video modes\n");
} else
if ( modes == (SDL_Rect **)-1 ) {
printf("No special fullscreen video modes\n");
} else {
printf("Fullscreen video modes:\n");
for ( i=0; modes[i]; ++i ) {
420
printf("\t%dx%dx%d\n", modes[i]->w, modes[i]->h, info->vfmt->BitsPerPixel);
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
}
}
if ( info->wm_available ) {
printf("A window manager is available\n");
}
if ( info->hw_available ) {
printf("Hardware surfaces are available (%dK video memory)\n",
info->video_mem);
}
if ( info->blit_hw ) {
printf(
"Copy blits between hardware surfaces are accelerated\n");
}
if ( info->blit_hw_CC ) {
printf(
"Colorkey blits between hardware surfaces are accelerated\n");
}
if ( info->blit_hw_A ) {
printf(
"Alpha blits between hardware surfaces are accelerated\n");
}
if ( info->blit_sw ) {
printf(
"Copy blits from software surfaces to hardware surfaces are accelerated\n");
}
if ( info->blit_sw_CC ) {
printf(
"Colorkey blits from software surfaces to hardware surfaces are accelerated\n");
}
if ( info->blit_sw_A ) {
printf(
"Alpha blits from software surfaces to hardware surfaces are accelerated\n");
}
if ( info->blit_fill ) {
printf(
"Color fills on hardware surfaces are accelerated\n");
}
458
459
460
461
462
if ( argv[1] && (strcmp(argv[1], "-benchmark") == 0) ) {
RunVideoTests();
}
463
464
465
SDL_Quit();
return(0);
}