glClearIndex man page on OpenBSD

glClearIndex man page on OpenBSD

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GLCLEARINDEX(3G)					      GLCLEARINDEX(3G)

NAME
       glClearIndex - specify the clear value for the color index buffers

C SPECIFICATION
       void glClearIndex( GLfloat c )

       delim $$

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)

								 March 1, 2011

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