Mercurial > sdl-ios-xcode
view Xcode/TemplatesForXcodeTiger/SDL Application/main.c @ 5043:da347bfed240
Florian Forster to sdl
in SDL 1.3 (revision 5508 from SVN), the method used to calculate the
bits per pixel from a “int format” differ between “SDL_ListModes” (which
always uses the “SDL_BITSPERPIXEL” macro) and “SDL_PixelFormatEnumTo-
Masks” (which uses either “SDL_BITSPERPIXEL” or “SDL_BYTESPERPIXEL * 8”,
depending on the value of “SDL_BYTESPERPIXEL”).
Because the values are later compared in “SDL_ListModes” this may lead
to some valid video modes not being returned. In my case the only mode
returned by “SDL_GetNumDisplayModes” was dismissed and NULL was
returned. (This led to the calling application sticking its head in the
sand.)
The attached patch copies the method used within “SDL_PixelFormatEnumTo-
Masks” to “SDL_ListModes”. This solved the problem for me though I don't
fully understand the method used by “SDL_PixelFormatEnumToMasks”.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 19 Jan 2011 16:06:47 -0800 |
parents | 232e5e00e398 |
children |
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/* Simple program: Create a blank window, wait for keypress, quit. Please see the SDL documentation for details on using the SDL API: /Developer/Documentation/SDL/docs.html */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <math.h> #include "SDL.h" int main(int argc, char *argv[]) { Uint32 initflags = SDL_INIT_VIDEO; /* See documentation for details */ SDL_Surface *screen; Uint8 video_bpp = 0; Uint32 videoflags = SDL_SWSURFACE; int done; SDL_Event event; /* Initialize the SDL library */ if ( SDL_Init(initflags) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); exit(1); } /* Set 640x480 video mode */ screen=SDL_SetVideoMode(640,480, video_bpp, videoflags); if (screen == NULL) { fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n", video_bpp, SDL_GetError()); SDL_Quit(); exit(2); } done = 0; while ( !done ) { /* Check for events */ while ( SDL_PollEvent(&event) ) { switch (event.type) { case SDL_MOUSEMOTION: break; case SDL_MOUSEBUTTONDOWN: break; case SDL_KEYDOWN: /* Any keypress quits the app... */ case SDL_QUIT: done = 1; break; default: break; } } } /* Clean up the SDL library */ SDL_Quit(); return(0); }