'''_glClearColor:''' specify clear values for the color buffers


{{PageSyntax}}

:: SUB '''_glClearColor''' (BYVAL red AS SINGLE, BYVAL green AS SINGLE, BYVAL blue AS SINGLE, BYVAL alpha AS SINGLE)
:: void '''_glClearColor'''(GLfloat {{Parameter|red}}, GLfloat {{Parameter|green}}, GLfloat {{Parameter|blue}}, GLfloat {{Parameter|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.


{{PageDescription}}

'''_glClearColor''' specifies the red, green, blue, and alpha values used by {{KW|_glClear}} to clear the color buffers.


{{PageNotes}}

The type of the {{Parameter|red}}, {{Parameter|green}}, {{Parameter|blue}}, and {{Parameter|alpha}} parameters was changed from GLclampf to GLfloat. This change is transparent to user code.


{{PageUseWith}}

{{KW|_glGet}} with argument {{KW|_GL_COLOR_CLEAR_VALUE}}

{{PageSeeAlso}}

[[_GL|SUB _GL]]
{{KW|_glClear}}


{{PageCopyright}}
