SDL_MapSurfaceRGBA - Map an RGBA quadruple to a pixel value for a surface.

       This function is available since SDL 3.2.0.

       This  function  maps  the RGBA color value to the specified pixel format and returns the pixel value best
       approximating the given RGBA color value for the given pixel format.

       If the surface pixel format has no alpha component the alpha value will be ignored  (as  it  will  be  in
       formats with a palette).

       If the surface has a palette, the index of the closest matching color in the palette will be returned.

       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).

surface
              the surface to use for the pixel format and palette.

       r      the red component of the pixel in the range 0-255.

       g      the green component of the pixel in the range 0-255.

       b      the blue component of the pixel in the range 0-255.

       a      the alpha component of the pixel in the range 0-255.

       Defined in SDL3/SDL_surface.h

       SDL_MapSurfaceRGBA - Map an RGBA quadruple to a pixel value for a surface.

       ( Uint32 ) Returns a pixel value.

•(3), SDL_MapSurfaceRGB(3)

Simple Directmedia Layer                           SDL 3.2.10                              SDL_MapSurfaceRGBA(3)

#include"SDL3/SDL.h"Uint32SDL_MapSurfaceRGBA(SDL_Surface*surface,Uint8r,Uint8g,Uint8b,Uint8a);

       It is safe to call this function from any thread.