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comparison test/testalpha.c @ 691:609543e2b3a1

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Date: Fri, 15 Aug 2003 09:13:59 +0300 From: "Mike Gorchak" Subject: Patches for tests and QNX6 1) graywin - added support for the gray gradient in the 15/16 bpp modes. Added SDL_VIDEOEXPOSE event handling. 2) testalpha - added support for the gray gradient in the 15/16 bpp modes. 3) testbitmap - added support for the gray gradient in the 8/15/16 bpp modes.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 23 Aug 2003 23:18:49 +0000
parents 74212992fb08
children 05c551e5bc64
comparison
equal deleted inserted replaced
690:b87d8d4c205d 691:609543e2b3a1
277 const SDL_VideoInfo *info; 277 const SDL_VideoInfo *info;
278 SDL_Surface *screen; 278 SDL_Surface *screen;
279 Uint8 video_bpp; 279 Uint8 video_bpp;
280 Uint32 videoflags; 280 Uint32 videoflags;
281 Uint8 *buffer; 281 Uint8 *buffer;
282 int i, done; 282 int i, k, done;
283 SDL_Event event; 283 SDL_Event event;
284 SDL_Surface *light; 284 SDL_Surface *light;
285 int mouse_pressed; 285 int mouse_pressed;
286 Uint32 ticks, lastticks; 286 Uint32 ticks, lastticks;
287 Uint16 *buffer16;
288 Uint16 color;
289 Uint8 gradient;
290
287 291
288 /* Initialize SDL */ 292 /* Initialize SDL */
289 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { 293 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
290 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); 294 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
291 exit(1); 295 exit(1);
296 info = SDL_GetVideoInfo(); 300 info = SDL_GetVideoInfo();
297 if ( info->vfmt->BitsPerPixel > 8 ) { 301 if ( info->vfmt->BitsPerPixel > 8 ) {
298 video_bpp = info->vfmt->BitsPerPixel; 302 video_bpp = info->vfmt->BitsPerPixel;
299 } else { 303 } else {
300 video_bpp = 16; 304 video_bpp = 16;
305 fprintf(stderr, "forced 16 bpp mode\n");
301 } 306 }
302 videoflags = SDL_SWSURFACE; 307 videoflags = SDL_SWSURFACE;
303 while ( argc > 1 ) { 308 while ( argc > 1 ) {
304 --argc; 309 --argc;
305 if ( strcmp(argv[argc-1], "-bpp") == 0 ) { 310 if ( strcmp(argv[argc-1], "-bpp") == 0 ) {
306 video_bpp = atoi(argv[argc]); 311 video_bpp = atoi(argv[argc]);
312 if (video_bpp<=8) {
313 video_bpp=16;
314 fprintf(stderr, "forced 16 bpp mode\n");
315 }
307 --argc; 316 --argc;
308 } else 317 } else
309 if ( strcmp(argv[argc], "-hw") == 0 ) { 318 if ( strcmp(argv[argc], "-hw") == 0 ) {
310 videoflags |= SDL_HWSURFACE; 319 videoflags |= SDL_HWSURFACE;
311 } else 320 } else
334 fprintf(stderr, "Couldn't lock the display surface: %s\n", 343 fprintf(stderr, "Couldn't lock the display surface: %s\n",
335 SDL_GetError()); 344 SDL_GetError());
336 exit(2); 345 exit(2);
337 } 346 }
338 buffer=(Uint8 *)screen->pixels; 347 buffer=(Uint8 *)screen->pixels;
339 for ( i=0; i<screen->h; ++i ) { 348 if (screen->format->BytesPerPixel!=2) {
340 memset(buffer,(i*255)/screen->h, screen->pitch); 349 for ( i=0; i<screen->h; ++i ) {
341 buffer += screen->pitch; 350 memset(buffer,(i*255)/screen->h, screen->pitch);
342 } 351 buffer += screen->pitch;
352 }
353 }
354 else
355 {
356 for ( i=0; i<screen->h; ++i ) {
357 gradient=((i*255)/screen->h);
358 color = SDL_MapRGB(screen->format, gradient, gradient, gradient);
359 buffer16=(Uint16*)buffer;
360 for (k=0; k<screen->w; k++)
361 {
362 *(buffer16+k)=color;
363 }
364 buffer += screen->pitch;
365 }
366 }
367
343 SDL_UnlockSurface(screen); 368 SDL_UnlockSurface(screen);
344 SDL_UpdateRect(screen, 0, 0, 0, 0); 369 SDL_UpdateRect(screen, 0, 0, 0, 0);
345 370
346 /* Create the light */ 371 /* Create the light */
347 light = CreateLight(screen, 82); 372 light = CreateLight(screen, 82);