SDL_WriteSurfacePixelFloat - Man Page

#include <SDL3/SDL_surface.h>

bool SDL_WriteSurfacePixelFloat(SDL_Surface *surface, int x, int y, float r, float g, float b, float a);

This function prioritizes correctness over speed: it is suitable for unit tests, but is not intended for use in a game engine.

surface

the surface to write.

x

the horizontal coordinate, 0 <= x < width.

y

the vertical coordinate, 0 <= y < height.

r

the red channel value, normally in the range 0-1.

g

the green channel value, normally in the range 0-1.

b

the blue channel value, normally in the range 0-1.

a

the alpha channel value, normally in the range 0-1.

Returns true on success or false on failure; call SDL_GetError() for more information.

This function can be called on different threads with different surfaces.

This function is available since SDL 3.2.0.