# glClearAccum

specify clear values for the accumulation buffer

## Signature

glClearAccum( GLfloat ( red ) , GLfloat ( green ) , GLfloat ( blue ) , GLfloat ( alpha ) )-> void
glClearAccum( red , blue , )

## Parameters

VariablesDescription
red, green, blue, alpha
Specify the red, green, blue, and alpha values used when the accumulation buffer is cleared. The initial values are all 0.

## Description

glClearAccum specifies the red, green, blue, and alpha values used by glClear to clear the accumulation buffer.
Values specified by glClearAccum are clamped to the range $\left[-1,1\right]$ .

## Errors

GL_INVALID_OPERATION is generated if glClearAccum is executed between the execution of glBegin and the corresponding execution of glEnd .

## Associated Gets

glGet with argument GL_ACCUM_CLEAR_VALUE