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 2แต โ1, where ๐ฆ is the number of bits in a color index stored in the frame buffer.
Parameters
c: number
Specifies the index used when the color index buffers are cleared. The initial value is 0.
Returns void
Summary
specify the clear value for the color index buffers
glClearIndexspecifies 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 2แต โ1, where ๐ฆ is the number of bits in a color index stored in the frame buffer.