1991-2006
Silicon Graphics, Inc.
2010-2014
Khronos Group
glClearColor
3G

# 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`

## API Version Support

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 http://oss.sgi.com/projects/FreeB/.