glClearColor.3G man page

glClearColor — specify clear values for the color buffers

C Specification

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


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.


glClearColor specifies the red, green, blue, and alpha values used by glClear() to clear the color buffers. Values specified by glClearColor are clamped to the range 0 1.


The type of the red, green, blue, and alpha parameters was changed from GLclampf to GLfloat. This change is transparent to user code and is described in detail on the removedTypes() page.

Associated Gets

glGet() with argument GL_COLOR_CLEAR_VALUE

Version Support

OpenGL Version
Function / Feature Name2.

See Also

glClear(), removedTypes()


12/28/2016 [FIXME: source] [FIXME: manual]