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Load a BMP with white pixels transparent using SDL2
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| SDL_Surface* GLimp_LoadIcon(char *name) | |
| { | |
| int32_t size; | |
| SDL_Surface *result = NULL; | |
| void *buffer = NULL; | |
| // load the BMP using engine-specific load call | |
| size = FS_LoadFile(name,&buffer); | |
| if (buffer) | |
| { | |
| SDL_RWops *rw; | |
| // create an SDL_RWops structure for the file buffer | |
| rw = SDL_RWFromMem(buffer,size); | |
| if (rw) | |
| { | |
| uint32_t keyColor; | |
| // load the BMP into an SDL_Surface from the SDL_RWops buffer | |
| result = SDL_LoadBMP_RW(rw,1); | |
| // gets the proper color for white (255,255,255) | |
| keyColor = SDL_MapRGB(result->format, 255, 255, 255); | |
| // enables transparency for all white pixels | |
| SDL_SetColorKey(result, SDL_TRUE, keyColor); | |
| } | |
| // free buffer | |
| Z_Free(buffer); | |
| } | |
| // return SDL_Surface containing the icon | |
| return result; | |
| } |
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