Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_SetSurfaceColorMod - Set an additional color value multiplied into blit operations.
HEADER FILE
Defined in SDL3/SDL_surface.h
SYNOPSIS
#include "SDL3/SDL.h" bool SDL_SetSurfaceColorMod(SDL_Surface *surface, Uint8 r, Uint8 g, Uint8 b);
DESCRIPTION
When this surface is blitted, during the blit operation each source color channel is modulated by the appropriate color value according to the following formula: srcC=srcC*(color/255)
FUNCTION PARAMETERS
surface the SDL_Surface structure to update. r the red color value multiplied into blit operations. g the green color value multiplied into blit operations. b the blue color value multiplied into blit operations.
RETURN VALUE
Returns true on success or false on failure; call SDL_GetError () for more information.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
•(3), SDL_GetSurfaceColorMod(3), •(3), SDL_SetSurfaceAlphaMod(3) Simple Directmedia Layer SDL 3.2.8 SDL_SetSurfaceColorMod(3)