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Manual Reference Pages  - GLCLEARINDEX (3G)

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glClearIndex - specify the clear value for the color index buffers

CONTENTS

C Specification
Parameters
Description
Errors
Associated Gets
See Also

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 2^m - 1, where m is the number of bits in a color index stored in the frame buffer.

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

 glGet with argument  GL_INDEX_CLEAR_VALUE
 glGet with argument  GL_INDEX_BITS

 glClear(3G)

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