(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_WriteSurfacePixelFloat

Writes a single pixel to a surface.

Header File

Defined in <SDL3/SDL_surface.h>

Syntax

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

Function Parameters

SDL_Surface *	surface	the surface to write.
int	x	the horizontal coordinate, 0 <= x < width.
int	y	the vertical coordinate, 0 <= y < height.
float	r	the red channel value, normally in the range 0-1.
float	g	the green channel value, normally in the range 0-1.
float	b	the blue channel value, normally in the range 0-1.
float	a	the alpha channel value, normally in the range 0-1.

Return Value

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

Remarks

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

Version

This function is available since SDL 3.1.3.

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CategoryAPI, CategoryAPIFunction, CategorySurface

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