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# docs.GL

OpenGL 4
OpenGL 3
OpenGL 2
OpenGL ES 3
OpenGL ES 2

# glClearColor

## Name

glClearColor — specify clear values for the color buffers

## C Specification

`void glClearColor(` | GLfloat red,
| GLfloat green,
| GLfloat blue,
| GLfloat alpha`)`;

## Parameters

`red`, `green`, `blue`, `alpha`

  Specify the red, green, blue, and alpha values used when the color buffers are cleared. The initial values are all 0.

## Description

`glClearColor` specifies the red, green, blue, and alpha values used by glClear to clear fixed- and floating-point color buffers. Unsigned normalized fixed point RGBA color buffers are cleared to color values derived by clamping each component of the clear color to the range 0 1 , then converting the (possibly sRGB converted and/or dithered) color to fixed-point.

## Associated Gets

glGet with argument `GL_COLOR_CLEAR_VALUE`

## Tutorials

## API Version Support

| OpenGL ES API Version
--- | ---
Function Name | 2.0 | 3.0 | 3.1
glClearColor | ✔ | ✔ | ✔

## See Also

glClear

## Copyright

Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2014 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see https://web.archive.org/web/20171022161616/http://oss.sgi.com/projects/FreeB/.

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