Mercurial > sdl-ios-xcode
diff test/testgamma.c @ 1662:782fd950bd46 SDL-1.3
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid.
The code is now run through a consistent indent format:
indent -i4 -nut -nsc -br -ce
The headers are being converted to automatically generate doxygen documentation.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 28 May 2006 13:04:16 +0000 |
parents | be9c9c8f6d53 |
children | 4da1ee79c9af |
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line diff
--- a/test/testgamma.c Sun May 21 17:27:13 2006 +0000 +++ b/test/testgamma.c Sun May 28 13:04:16 2006 +0000 @@ -9,189 +9,186 @@ #include "SDL.h" /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ -static void quit(int rc) +static void +quit (int rc) { - SDL_Quit(); - exit(rc); + SDL_Quit (); + exit (rc); } /* Turn a normal gamma value into an appropriate gamma ramp */ -void CalculateGamma(double gamma, Uint16 *ramp) +void +CalculateGamma (double gamma, Uint16 * ramp) { - int i, value; + int i, value; - gamma = 1.0 / gamma; - for ( i=0; i<256; ++i ) { - value = (int)(pow((double)i/256.0, gamma)*65535.0 + 0.5); - if ( value > 65535 ) { - value = 65535; - } - ramp[i] = (Uint16)value; - } + gamma = 1.0 / gamma; + for (i = 0; i < 256; ++i) { + value = (int) (pow ((double) i / 256.0, gamma) * 65535.0 + 0.5); + if (value > 65535) { + value = 65535; + } + ramp[i] = (Uint16) value; + } } /* This can be used as a general routine for all of the test programs */ -int get_video_args(char *argv[], int *w, int *h, int *bpp, Uint32 *flags) +int +get_video_args (char *argv[], int *w, int *h, int *bpp, Uint32 * flags) { - int i; + int i; - *w = 640; - *h = 480; - *bpp = 0; - *flags = SDL_SWSURFACE; + *w = 640; + *h = 480; + *bpp = 0; + *flags = SDL_SWSURFACE; - for ( i=1; argv[i]; ++i ) { - if ( strcmp(argv[i], "-width") == 0 ) { - if ( argv[i+1] ) { - *w = atoi(argv[++i]); - } - } else - if ( strcmp(argv[i], "-height") == 0 ) { - if ( argv[i+1] ) { - *h = atoi(argv[++i]); - } - } else - if ( strcmp(argv[i], "-bpp") == 0 ) { - if ( argv[i+1] ) { - *bpp = atoi(argv[++i]); - } - } else - if ( strcmp(argv[i], "-fullscreen") == 0 ) { - *flags |= SDL_FULLSCREEN; - } else - if ( strcmp(argv[i], "-hw") == 0 ) { - *flags |= SDL_HWSURFACE; - } else - if ( strcmp(argv[i], "-hwpalette") == 0 ) { - *flags |= SDL_HWPALETTE; - } else - break; - } - return i; + for (i = 1; argv[i]; ++i) { + if (strcmp (argv[i], "-width") == 0) { + if (argv[i + 1]) { + *w = atoi (argv[++i]); + } + } else if (strcmp (argv[i], "-height") == 0) { + if (argv[i + 1]) { + *h = atoi (argv[++i]); + } + } else if (strcmp (argv[i], "-bpp") == 0) { + if (argv[i + 1]) { + *bpp = atoi (argv[++i]); + } + } else if (strcmp (argv[i], "-fullscreen") == 0) { + *flags |= SDL_FULLSCREEN; + } else if (strcmp (argv[i], "-hw") == 0) { + *flags |= SDL_HWSURFACE; + } else if (strcmp (argv[i], "-hwpalette") == 0) { + *flags |= SDL_HWPALETTE; + } else + break; + } + return i; } -int main(int argc, char *argv[]) +int +main (int argc, char *argv[]) { - SDL_Surface *screen; - SDL_Surface *image; - float gamma; - int i; - int w, h, bpp; - Uint32 flags; - Uint16 ramp[256]; - Uint16 red_ramp[256]; - Uint32 then, timeout; + SDL_Surface *screen; + SDL_Surface *image; + float gamma; + int i; + int w, h, bpp; + Uint32 flags; + Uint16 ramp[256]; + Uint16 red_ramp[256]; + Uint32 then, timeout; - /* Check command line arguments */ - argv += get_video_args(argv, &w, &h, &bpp, &flags); + /* Check command line arguments */ + argv += get_video_args (argv, &w, &h, &bpp, &flags); - /* Initialize SDL */ - if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { - fprintf(stderr, - "Couldn't initialize SDL: %s\n", SDL_GetError()); - return(1); - } + /* Initialize SDL */ + if (SDL_Init (SDL_INIT_VIDEO) < 0) { + fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ()); + return (1); + } - /* Initialize the display, always use hardware palette */ - screen = SDL_SetVideoMode(w, h, bpp, flags | SDL_HWPALETTE); - if ( screen == NULL ) { - fprintf(stderr, "Couldn't set %dx%d video mode: %s\n", - w, h, SDL_GetError()); - quit(1); - } + /* Initialize the display, always use hardware palette */ + screen = SDL_SetVideoMode (w, h, bpp, flags | SDL_HWPALETTE); + if (screen == NULL) { + fprintf (stderr, "Couldn't set %dx%d video mode: %s\n", + w, h, SDL_GetError ()); + quit (1); + } - /* Set the window manager title bar */ - SDL_WM_SetCaption("SDL gamma test", "testgamma"); + /* Set the window manager title bar */ + SDL_WM_SetCaption ("SDL gamma test", "testgamma"); - /* Set the desired gamma, if any */ - gamma = 1.0f; - if ( *argv ) { - gamma = (float)atof(*argv); - } - if ( SDL_SetGamma(gamma, gamma, gamma) < 0 ) { - fprintf(stderr, "Unable to set gamma: %s\n", SDL_GetError()); - quit(1); - } - -#if 0 /* This isn't supported. Integrating the gamma ramps isn't exact */ - /* See what gamma was actually set */ - float real[3]; - if ( SDL_GetGamma(&real[0], &real[1], &real[2]) < 0 ) { - printf("Couldn't get gamma: %s\n", SDL_GetError()); - } else { - printf("Set gamma values: R=%2.2f, G=%2.2f, B=%2.2f\n", - real[0], real[1], real[2]); - } + /* Set the desired gamma, if any */ + gamma = 1.0f; + if (*argv) { + gamma = (float) atof (*argv); + } + if (SDL_SetGamma (gamma, gamma, gamma) < 0) { + fprintf (stderr, "Unable to set gamma: %s\n", SDL_GetError ()); + quit (1); + } +#if 0 /* This isn't supported. Integrating the gamma ramps isn't exact */ + /* See what gamma was actually set */ + float real[3]; + if (SDL_GetGamma (&real[0], &real[1], &real[2]) < 0) { + printf ("Couldn't get gamma: %s\n", SDL_GetError ()); + } else { + printf ("Set gamma values: R=%2.2f, G=%2.2f, B=%2.2f\n", + real[0], real[1], real[2]); + } #endif - /* Do all the drawing work */ - image = SDL_LoadBMP("sample.bmp"); - if ( image ) { - SDL_Rect dst; + /* Do all the drawing work */ + image = SDL_LoadBMP ("sample.bmp"); + if (image) { + SDL_Rect dst; - dst.x = (screen->w - image->w)/2; - dst.y = (screen->h - image->h)/2; - dst.w = image->w; - dst.h = image->h; - SDL_BlitSurface(image, NULL, screen, &dst); - SDL_UpdateRects(screen, 1, &dst); - } + dst.x = (screen->w - image->w) / 2; + dst.y = (screen->h - image->h) / 2; + dst.w = image->w; + dst.h = image->h; + SDL_BlitSurface (image, NULL, screen, &dst); + SDL_UpdateRects (screen, 1, &dst); + } - /* Wait a bit, handling events */ - then = SDL_GetTicks(); - timeout = (5*1000); - while ( (SDL_GetTicks()-then) < timeout ) { - SDL_Event event; + /* Wait a bit, handling events */ + then = SDL_GetTicks (); + timeout = (5 * 1000); + while ((SDL_GetTicks () - then) < timeout) { + SDL_Event event; - while ( SDL_PollEvent(&event) ) { - switch (event.type) { - case SDL_QUIT: /* Quit now */ - timeout = 0; - break; - case SDL_KEYDOWN: - switch (event.key.keysym.sym) { - case SDLK_SPACE: /* Go longer.. */ - timeout += (5*1000); - break; - case SDLK_UP: - gamma += 0.2f; - SDL_SetGamma(gamma, gamma, gamma); - break; - case SDLK_DOWN: - gamma -= 0.2f; - SDL_SetGamma(gamma, gamma, gamma); - break; - case SDLK_ESCAPE: - timeout = 0; - break; - default: - break; - } - break; - } - } - } + while (SDL_PollEvent (&event)) { + switch (event.type) { + case SDL_QUIT: /* Quit now */ + timeout = 0; + break; + case SDL_KEYDOWN: + switch (event.key.keysym.sym) { + case SDLK_SPACE: /* Go longer.. */ + timeout += (5 * 1000); + break; + case SDLK_UP: + gamma += 0.2f; + SDL_SetGamma (gamma, gamma, gamma); + break; + case SDLK_DOWN: + gamma -= 0.2f; + SDL_SetGamma (gamma, gamma, gamma); + break; + case SDLK_ESCAPE: + timeout = 0; + break; + default: + break; + } + break; + } + } + } - /* Perform a gamma flash to red using color ramps */ - while ( gamma < 10.0 ) { - /* Increase the red gamma and decrease everything else... */ - gamma += 0.1f; - CalculateGamma(gamma, red_ramp); - CalculateGamma(1.0/gamma, ramp); - SDL_SetGammaRamp(red_ramp, ramp, ramp); - } - /* Finish completely red */ - memset(red_ramp, 255, sizeof(red_ramp)); - memset(ramp, 0, sizeof(ramp)); - SDL_SetGammaRamp(red_ramp, ramp, ramp); + /* Perform a gamma flash to red using color ramps */ + while (gamma < 10.0) { + /* Increase the red gamma and decrease everything else... */ + gamma += 0.1f; + CalculateGamma (gamma, red_ramp); + CalculateGamma (1.0 / gamma, ramp); + SDL_SetGammaRamp (red_ramp, ramp, ramp); + } + /* Finish completely red */ + memset (red_ramp, 255, sizeof (red_ramp)); + memset (ramp, 0, sizeof (ramp)); + SDL_SetGammaRamp (red_ramp, ramp, ramp); - /* Now fade out to black */ - for ( i=(red_ramp[0] >> 8); i >= 0; --i ) { - memset(red_ramp, i, sizeof(red_ramp)); - SDL_SetGammaRamp(red_ramp, NULL, NULL); - } - SDL_Delay(1*1000); + /* Now fade out to black */ + for (i = (red_ramp[0] >> 8); i >= 0; --i) { + memset (red_ramp, i, sizeof (red_ramp)); + SDL_SetGammaRamp (red_ramp, NULL, NULL); + } + SDL_Delay (1 * 1000); - SDL_Quit(); - return(0); + SDL_Quit (); + return (0); }