Mercurial > sdl-ios-xcode
diff test/testalpha.c @ 691:609543e2b3a1
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 |
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--- a/test/testalpha.c Sat Aug 23 23:12:19 2003 +0000 +++ b/test/testalpha.c Sat Aug 23 23:18:49 2003 +0000 @@ -279,11 +279,15 @@ Uint8 video_bpp; Uint32 videoflags; Uint8 *buffer; - int i, done; + int i, k, done; SDL_Event event; SDL_Surface *light; int mouse_pressed; Uint32 ticks, lastticks; + Uint16 *buffer16; + Uint16 color; + Uint8 gradient; + /* Initialize SDL */ if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { @@ -298,12 +302,17 @@ video_bpp = info->vfmt->BitsPerPixel; } else { video_bpp = 16; + fprintf(stderr, "forced 16 bpp mode\n"); } videoflags = SDL_SWSURFACE; while ( argc > 1 ) { --argc; if ( strcmp(argv[argc-1], "-bpp") == 0 ) { video_bpp = atoi(argv[argc]); + if (video_bpp<=8) { + video_bpp=16; + fprintf(stderr, "forced 16 bpp mode\n"); + } --argc; } else if ( strcmp(argv[argc], "-hw") == 0 ) { @@ -336,10 +345,26 @@ exit(2); } buffer=(Uint8 *)screen->pixels; - for ( i=0; i<screen->h; ++i ) { - memset(buffer,(i*255)/screen->h, screen->pitch); - buffer += screen->pitch; + if (screen->format->BytesPerPixel!=2) { + for ( i=0; i<screen->h; ++i ) { + memset(buffer,(i*255)/screen->h, screen->pitch); + buffer += screen->pitch; + } } + else + { + for ( i=0; i<screen->h; ++i ) { + gradient=((i*255)/screen->h); + color = SDL_MapRGB(screen->format, gradient, gradient, gradient); + buffer16=(Uint16*)buffer; + for (k=0; k<screen->w; k++) + { + *(buffer16+k)=color; + } + buffer += screen->pitch; + } + } + SDL_UnlockSurface(screen); SDL_UpdateRect(screen, 0, 0, 0, 0);