glClearIndex — specify the clear value for the color index buffers
void glClearIndex( | GLfloat | c) ; |
c
Specifies the index used when the color index buffers are cleared. The initial value is 0.
glClearIndex
specifies the index used by glClear
to clear the color index buffers.
c
is not clamped.
Rather,
c
is converted to a fixed-point value with unspecified precision
to the right of the binary point.
The integer part of this value is then masked with
GL_INVALID_OPERATION
is generated if glClearIndex
is executed between the execution of glBegin
and the corresponding execution of glEnd.
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