gl.ClearAccum(red, green, blue, alpha)
gl.ClearAccum()
specifies the red, green, blue, and alpha values used by gl.Clear() to clear the accumulation buffer.
Values specified by gl.ClearAccum()
are clamped to the range -1 through 1.
Please consult an OpenGL reference manual for more information.
#GL_INVALID_OPERATION
is generated if gl.ClearAccum()
is executed between the execution of gl.Begin() and the corresponding execution of gl.End()
#GL_ACCUM_CLEAR_VALUE