Map an RGB triple to an opaque pixel value for a surface.
This function maps the RGB color value to the specified pixel format and
returns the pixel value best approximating the given RGB color value for
the given pixel format.
If the surface has a palette, the index of the closest matching color in
the palette will be returned.
If the surface pixel format has an alpha component it will be returned as
all 1 bits (fully opaque).
If the pixel format bpp (color depth) is less than 32-bpp then the unused
upper bits of the return value can safely be ignored (e.g., with a 16-bpp
format the return value can be assigned to a Uint16, and similarly a Uint8
for an 8-bpp format).
Map an RGB triple to an opaque pixel value for a surface.
This function maps the RGB color value to the specified pixel format and returns the pixel value best approximating the given RGB color value for the given pixel format.
If the surface has a palette, the index of the closest matching color in the palette will be returned.
If the surface pixel format has an alpha component it will be returned as all 1 bits (fully opaque).
If the pixel format bpp (color depth) is less than 32-bpp then the unused upper bits of the return value can safely be ignored (e.g., with a 16-bpp format the return value can be assigned to a Uint16, and similarly a Uint8 for an 8-bpp format).