- pixel-format-enum-to-masks format-enumprocedure
See SDL_PixelFormatEnumToMasks.
format-enum must be a pixel format symbol or equivalent integer.
This procedure returns multiple values:
- bpp
- The color depth (bits per pixel) of the format.
- rmask
- The red mask of the format.
- gmask
- The green mask of the format.
- bmask
- The blue mask of the format.
- amask
- The alpha mask of the format.
Signals an exception of kind (exn sdl2) if conversion was not possible.