DOKK / manpages / debian 13 / libsdl3-doc / SDL_ALPHA_OPAQUE_FLOAT.3.en
SDL_ALPHA_OPAQUE_FLOAT(3) SDL3 FUNCTIONS SDL_ALPHA_OPAQUE_FLOAT(3)

SDL_ALPHA_OPAQUE_FLOAT - A fully opaque floating point alpha value.

Defined in SDL3/SDL_pixels.h

#include "SDL3/SDL.h"
#define SDL_ALPHA_OPAQUE_FLOAT 1.0f

This macro is available since SDL 3.2.0.

(3), SDL_ALPHA_TRANSPARENT_FLOAT(3)

SDL 3.2.10 Simple Directmedia Layer