(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)

SDL_SetRenderColorScale

Set the color scale used for render operations.

Header File

Syntax

int SDL_SetRenderColorScale(SDL_Renderer *renderer, float scale);

Function Parameters

renderer	the rendering context
scale	the color scale value

Return Value

Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.

Remarks

The color scale is an additional scale multiplied into the pixel color value while rendering. This can be used to adjust the brightness of colors during HDR rendering, or changing HDR video brightness when playing on an SDR display.

The color scale does not affect the alpha channel, only the color brightness.

Version

This function is available since SDL 3.0.0.