Function SDL_WriteSurfacePixelFloat 

pub unsafe extern "C" fn SDL_WriteSurfacePixelFloat(
    surface: *mut SDL_Surface,
    x: c_int,
    y: c_int,
    r: c_float,
    g: c_float,
    b: c_float,
    a: c_float,
) -> bool

Writes a single pixel to a surface.

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

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, 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.

Return value

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

Thread safety

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

Availability

This function is available since SDL 3.2.0.