glClearColor function

Article
12/11/2020

The glClearColor function specifies clear values for the color buffers.

Syntax

void WINAPI glClearColor(
   GLclampf red,
   GLclampf green,
   GLclampf blue,
   GLclampf alpha
);

Parameters

red: The red value that glClear uses to clear the color buffers. The default value is zero.
green: The green value that glClear uses to clear the color buffers. The default value is zero.
blue: The blue value that glClear uses to clear the color buffers. The default value is zero.
alpha: The alpha value that glClear uses to clear the color buffers. The default value is zero.

Return value

This function does not return a value.

Error codes

The following error codes can be retrieved by the glGetError function.

Name	Meaning
GL_INVALID_OPERATION	The function was called between a call to glBegin and the corresponding call to glEnd.

Remarks

The glClearColor function 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 following functions retrieve information related to the glClearColor function:

glGet with argument GL_ACCUM_CLEAR_VALUE

glGet with argument GL_COLOR_CLEAR_VALUE

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Gl.h
Library	Opengl32.lib
DLL	Opengl32.dll