---
name: "SDL_SetRenderColorScale"
section: "3"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_SetRenderColorScale"
---

# SDL\_SetRenderColorScale(3)

Set the color scale used for render operations.

## NAME

SDL\_SetRenderColorScale - Set the color scale used for render operations.

## HEADER FILE

Defined in SDL3/SDL\_render.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**bool SDL\_SetRenderColorScale(SDL\_Renderer \*renderer, float scale);**

## DESCRIPTION

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.

## FUNCTION PARAMETERS

- *renderer*

  the rendering context.

- *scale*

  the color scale value.

## RETURN VALUE

Returns true on success or false on failure; call

**SDL\_GetError** () for more information.

## THREAD SAFETY

This function should only be called on the main thread.

## AVAILABILITY

This function is available since SDL 3.2.0.

## SEE ALSO

**•**(3), [**SDL\_GetRenderColorScale**(3)](/SDL_GetRenderColorScale/3.md)