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sdl2: use ABGR8888 texture on little endian system 

This is a massive performance boost on slow processors, because
before, the intermediary buffer had to be swizzled to ABGR8888
before being uploaded -- for large resolutions this was an
enormous performance penalty.
This commit is contained in:
Ronald Kinard 2014-07-23 23:02:21 -05:00
parent 345b59f6f5
commit fc075e4c81
1 changed files with 7 additions and 1 deletions
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8
src/sdl2/i_video.c
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@ -174,6 +174,7 @@ static void SDLSetMode(INT32 width, INT32 height, SDL_bool fullscreen)
int gmask;
int bmask;
int amask;
int sw_texture_format = SDL_PIXELFORMAT_ABGR8888;
realwidth = vid.width;
realheight = vid.height;
@ -229,7 +230,12 @@ static void SDLSetMode(INT32 width, INT32 height, SDL_bool fullscreen)
{
SDL_DestroyTexture(texture);
}
texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_STREAMING, width, height);
#ifdef SDL_BIG_ENDIAN
sw_texture_format = SDL_PIXELFORMAT_RGBA8888;
#else
sw_texture_format = SDL_PIXELFORMAT_ABGR8888;
#endif
texture = SDL_CreateTexture(renderer, sw_texture_format, SDL_TEXTUREACCESS_STREAMING, width, height);
// Set up SW surface
if (vidSurface != NULL)