GLCLEARINDEX
NAMEC SPECIFICATION
PARAMETERS
DESCRIPTION
ERRORS
ASSOCIATED GETS
SEE ALSO
NAME
glClearIndex − specify the clear value for the color index buffers
C SPECIFICATION
void glClearIndex( GLfloat c )
PARAMETERS
|
c |
Specifies the index used when the color index buffers are cleared. The initial value is 0. |
DESCRIPTION
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 $2 sup m^-^1$, where $m$ is the number of bits in a color index stored in the frame buffer.
ERRORS
GL_INVALID_OPERATION is generated if glClearIndex is executed between the execution of glBegin and the corresponding execution of glEnd.
ASSOCIATED GETS
glGet
with argument GL_INDEX_CLEAR_VALUE
glGet with argument GL_INDEX_BITS
SEE ALSO
glClear(3G)
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