NAME
SDL_WriteSurfacePixel - Writes a single pixel to a surface.
HEADER FILE
Defined in SDL3/SDL_surface.h
SYNOPSIS
#include "SDL3/SDL.h"
bool SDL_WriteSurfacePixel(SDL_Surface *surface, int x, int y, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
DESCRIPTION
This function prioritizes correctness over speed: it is suitable for unit tests, but is not intended for use in a game engine.
Like SDL_MapRGBA , this uses the entire 0..255 range when converting color components from pixel formats with less than 8 bits per RGB component.
FUNCTION PARAMETERS
- surface
-
the surface to write.
- x
-
the horizontal coordinate, 0 <= x < width.
- y
-
the vertical coordinate, 0 <= y < height.
- r
-
the red channel value, 0-255.
- g
-
the green channel value, 0-255.
- b
-
the blue channel value, 0-255.
- a
-
the alpha channel value, 0-255.
RETURN VALUE
Returns true on success or false on failure; call
SDL_GetError () for more information.
THREAD SAFETY
This function is not thread safe.
AVAILABILITY
This function is available since SDL 3.2.0.