Mercurial > sdl-ios-xcode
view test/testwin.c @ 1768:814f9f2c7a33
Fixed bug #80
Date: 21 Apr 2003 17:20:20 +0100
From: Alan Swanson <swanson@uklinux.net>
Subject: [SDL] New XFree 4.3 Video Mode Patch
If you look at the unsorted list of modes returned by X, here's mine;
1280 x 1024 @ 85.0 >
1024 x 768 @ 100.3 > USER
800 x 600 @ 125.5 > SET
640 x 480 @ 124.9 >
1280 x 1024 @ 75.0 ]
1280 x 1024 @ 60.0 ]
1280 x 960 @ 85.0 ] X11
1280 x 960 @ 60.0 ] AUTO
1152 x 864 @ 75.0 ]=20
1152 x 768 @ 54.8 ]
960 x 720 @ 120.0 ]
...
640 x 400 @ 85.1 ] 256k
576 x 432 @ 150.0 ] 249k PIXEL
640 x 350 @ 85.1 ] 224k COUNT
576 x 384 @ 109.6 ] 221k
...
The user set modes come first followed by X set modes which are ordered
by decreasing number of pixels and refresh.
The reason why every other library or program not using SDL working is
due to SDL scanning the modes in reverse getting X11 provided modes
modes with the lowest refresh.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 05 May 2006 05:50:26 +0000 |
parents | a9be6a3a51d1 |
children | 782fd950bd46 c121d94672cb f61a20d195f7 |
line wrap: on
line source
/* Bring up a window and play with it */ #include <stdlib.h> #include <stdio.h> #include <string.h> #define BENCHMARK_SDL #define NOTICE(X) printf("%s", X); #include "SDL.h" /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ static void quit(int rc) { SDL_Quit(); exit(rc); } void DrawPict(SDL_Surface *screen, char *bmpfile, int speedy, int flip, int nofade) { SDL_Surface *picture; SDL_Rect dest, update; int i, centered; int ncolors; SDL_Color *colors, *cmap; /* Load the image into a surface */ if ( bmpfile == NULL ) { bmpfile = "sample.bmp"; /* Sample image */ } fprintf(stderr, "Loading picture: %s\n", bmpfile); picture = SDL_LoadBMP(bmpfile); if ( picture == NULL ) { fprintf(stderr, "Couldn't load %s: %s\n", bmpfile, SDL_GetError()); return; } /* Set the display colors -- on a hicolor display this is a no-op */ if ( picture->format->palette ) { ncolors = picture->format->palette->ncolors; colors = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); cmap = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); memcpy(colors, picture->format->palette->colors, ncolors*sizeof(SDL_Color)); } else { int r, g, b; /* Allocate 256 color palette */ ncolors = 256; colors = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); cmap = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); /* Set a 3,3,2 color cube */ for ( r=0; r<8; ++r ) { for ( g=0; g<8; ++g ) { for ( b=0; b<4; ++b ) { i = ((r<<5)|(g<<2)|b); colors[i].r = r<<5; colors[i].g = g<<5; colors[i].b = b<<6; } } } } NOTICE("testwin: setting colors\n"); if ( ! SDL_SetColors(screen, colors, 0, ncolors) && (screen->format->palette != NULL) ) { fprintf(stderr, "Warning: Couldn't set all of the colors, but SDL will map the image\n" " (colormap fading will suffer - try the -warp option)\n" ); } /* Set the screen to black (not really necessary) */ if ( SDL_LockSurface(screen) == 0 ) { Uint32 black; Uint8 *pixels; black = SDL_MapRGB(screen->format, 0, 0, 0); pixels = (Uint8 *)screen->pixels; for ( i=0; i<screen->h; ++i ) { memset(pixels, black, screen->w*screen->format->BytesPerPixel); pixels += screen->pitch; } SDL_UnlockSurface(screen); SDL_UpdateRect(screen, 0, 0, 0, 0); } /* Display the picture */ if ( speedy ) { SDL_Surface *displayfmt; fprintf(stderr, "Converting picture\n"); displayfmt = SDL_DisplayFormat(picture); if ( displayfmt == NULL ) { fprintf(stderr, "Couldn't convert image: %s\n", SDL_GetError()); goto done; } SDL_FreeSurface(picture); picture = displayfmt; } printf("(image surface located in %s memory)\n", (picture->flags&SDL_HWSURFACE) ? "video" : "system"); centered = (screen->w - picture->w)/2; if ( centered < 0 ) { centered = 0; } dest.y = (screen->h - picture->h)/2; dest.w = picture->w; dest.h = picture->h; NOTICE("testwin: moving image\n"); for ( i=0; i<=centered; ++i ) { dest.x = i; update = dest; if ( SDL_BlitSurface(picture, NULL, screen, &update) < 0 ) { fprintf(stderr, "Blit failed: %s\n", SDL_GetError()); break; } if ( flip ) { SDL_Flip(screen); } else { SDL_UpdateRects(screen, 1, &update); } } #ifdef SCREENSHOT if ( SDL_SaveBMP(screen, "screen.bmp") < 0 ) printf("Couldn't save screen: %s\n", SDL_GetError()); #endif #ifndef BENCHMARK_SDL /* Let it sit there for a while */ SDL_Delay(5*1000); #endif /* Fade the colormap */ if ( ! nofade ) { int maxstep; SDL_Color final; SDL_Color palcolors[256]; struct { Sint16 r, g, b; } cdist[256]; NOTICE("testwin: fading out...\n"); memcpy(cmap, colors, ncolors*sizeof(SDL_Color)); maxstep = 32-1; final.r = 0xFF; final.g = 0x00; final.b = 0x00; memcpy(palcolors, colors, ncolors*sizeof(SDL_Color)); for ( i=0; i<ncolors; ++i ) { cdist[i].r = final.r-palcolors[i].r; cdist[i].g = final.g-palcolors[i].g; cdist[i].b = final.b-palcolors[i].b; } for ( i=0; i<=maxstep/2; ++i ) { /* halfway fade */ int c; for ( c=0; c<ncolors; ++c ) { colors[c].r = palcolors[c].r+((cdist[c].r*i))/maxstep; colors[c].g = palcolors[c].g+((cdist[c].g*i))/maxstep; colors[c].b = palcolors[c].b+((cdist[c].b*i))/maxstep; } SDL_SetColors(screen, colors, 0, ncolors); SDL_Delay(1); } final.r = 0x00; final.g = 0x00; final.b = 0x00; memcpy(palcolors, colors, ncolors*sizeof(SDL_Color)); for ( i=0; i<ncolors; ++i ) { cdist[i].r = final.r-palcolors[i].r; cdist[i].g = final.g-palcolors[i].g; cdist[i].b = final.b-palcolors[i].b; } maxstep /= 2; for ( i=0; i<=maxstep; ++i ) { /* finish fade out */ int c; for ( c=0; c<ncolors; ++c ) { colors[c].r = palcolors[c].r+((cdist[c].r*i))/maxstep; colors[c].g = palcolors[c].g+((cdist[c].g*i))/maxstep; colors[c].b = palcolors[c].b+((cdist[c].b*i))/maxstep; } SDL_SetColors(screen, colors, 0, ncolors); SDL_Delay(1); } for ( i=0; i<ncolors; ++i ) { colors[i].r = final.r; colors[i].g = final.g; colors[i].b = final.b; } SDL_SetColors(screen, colors, 0, ncolors); NOTICE("testwin: fading in...\n"); memcpy(palcolors, colors, ncolors*sizeof(SDL_Color)); for ( i=0; i<ncolors; ++i ) { cdist[i].r = cmap[i].r-palcolors[i].r; cdist[i].g = cmap[i].g-palcolors[i].g; cdist[i].b = cmap[i].b-palcolors[i].b; } for ( i=0; i<=maxstep; ++i ) { /* 32 step fade in */ int c; for ( c=0; c<ncolors; ++c ) { colors[c].r = palcolors[c].r+((cdist[c].r*i))/maxstep; colors[c].g = palcolors[c].g+((cdist[c].g*i))/maxstep; colors[c].b = palcolors[c].b+((cdist[c].b*i))/maxstep; } SDL_SetColors(screen, colors, 0, ncolors); SDL_Delay(1); } NOTICE("testwin: fading over\n"); } done: /* Free the picture and return */ SDL_FreeSurface(picture); free(colors); free(cmap); return; } int main(int argc, char *argv[]) { SDL_Surface *screen; /* Options */ int speedy, flip, nofade; int delay; int w, h; int desired_bpp; Uint32 video_flags; #ifdef BENCHMARK_SDL Uint32 then, now; #endif /* Set default options and check command-line */ speedy = 0; flip = 0; nofade = 0; delay = 1; #ifdef _WIN32_WCE w = 240; h = 320; desired_bpp = 8; video_flags = SDL_FULLSCREEN; #else w = 640; h = 480; desired_bpp = 0; video_flags = 0; #endif if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); return(1); } while ( argc > 1 ) { if ( strcmp(argv[1], "-speedy") == 0 ) { speedy = 1; argv += 1; argc -= 1; } else if ( strcmp(argv[1], "-nofade") == 0 ) { nofade = 1; argv += 1; argc -= 1; } else if ( strcmp(argv[1], "-delay") == 0 ) { if ( argv[2] ) { delay = atoi(argv[2]); argv += 2; argc -= 2; } else { fprintf(stderr, "The -delay option requires an argument\n"); quit(1); } } else if ( strcmp(argv[1], "-width") == 0 ) { if ( argv[2] && ((w = atoi(argv[2])) > 0) ) { argv += 2; argc -= 2; } else { fprintf(stderr, "The -width option requires an argument\n"); quit(1); } } else if ( strcmp(argv[1], "-height") == 0 ) { if ( argv[2] && ((h = atoi(argv[2])) > 0) ) { argv += 2; argc -= 2; } else { fprintf(stderr, "The -height option requires an argument\n"); quit(1); } } else if ( strcmp(argv[1], "-bpp") == 0 ) { if ( argv[2] ) { desired_bpp = atoi(argv[2]); argv += 2; argc -= 2; } else { fprintf(stderr, "The -bpp option requires an argument\n"); quit(1); } } else if ( strcmp(argv[1], "-warp") == 0 ) { video_flags |= SDL_HWPALETTE; argv += 1; argc -= 1; } else if ( strcmp(argv[1], "-hw") == 0 ) { video_flags |= SDL_HWSURFACE; argv += 1; argc -= 1; } else if ( strcmp(argv[1], "-flip") == 0 ) { video_flags |= SDL_DOUBLEBUF; argv += 1; argc -= 1; } else if ( strcmp(argv[1], "-fullscreen") == 0 ) { video_flags |= SDL_FULLSCREEN; argv += 1; argc -= 1; } else break; } /* Initialize the display */ screen = SDL_SetVideoMode(w, h, desired_bpp, video_flags); if ( screen == NULL ) { fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n", w, h, desired_bpp, SDL_GetError()); quit(1); } printf("Set%s %dx%dx%d mode\n", screen->flags & SDL_FULLSCREEN ? " fullscreen" : "", screen->w, screen->h, screen->format->BitsPerPixel); printf("(video surface located in %s memory)\n", (screen->flags&SDL_HWSURFACE) ? "video" : "system"); if ( screen->flags & SDL_DOUBLEBUF ) { printf("Double-buffering enabled\n"); flip = 1; } /* Set the window manager title bar */ SDL_WM_SetCaption("SDL test window", "testwin"); /* Do all the drawing work */ #ifdef BENCHMARK_SDL then = SDL_GetTicks(); DrawPict(screen, argv[1], speedy, flip, nofade); now = SDL_GetTicks(); printf("Time: %d milliseconds\n", now-then); #else DrawPict(screen, argv[1], speedy, flip, nofade); #endif SDL_Delay(delay*1000); SDL_Quit(); return(0); }