Function SDL_MapRGB

deps/SDL2/src/video/SDL_pixels.c:805–815

Find the opaque pixel value corresponding to an RGB triple */

/* Find the opaque pixel value corresponding to an RGB triple */
Uint32
SDL_MapRGB(const SDL_PixelFormat * format, Uint8 r, Uint8 g, Uint8 b)
{
    if (format->palette == NULL) {
        return (r >> format->Rloss) << format->Rshift
            | (g >> format->Gloss) << format->Gshift
            | (b >> format->Bloss) << format->Bshift | format->Amask;
    } else {
        return SDL_FindColor(format->palette, r, g, b, SDL_ALPHA_OPAQUE);
    }
}

/* Find the pixel value corresponding to an RGBA quadruple */
Uint32