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qb64/internal/help/_gllearColor.md

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_glClearColor: specify clear values for the color buffers

Syntax

: SUB _glClearColor (BYVAL red AS SINGLE, BYVAL green AS SINGLE, BYVAL blue AS SINGLE, BYVAL alpha AS SINGLE)
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.

Description

_glClearColor specifies the red, green, blue, and alpha values used by _glClear to clear the color buffers.

Notes

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

Use With

_glGet with argument _GL_COLOR_CLEAR_VALUE

See Also

_GL _glClear