void ggllIInnddeexxff( GLfloat _c )
void ggllIInnddeexxii( GLint _c )
void ggllIInnddeexxss( GLshort _c )
void ggllIInnddeexxuubb( GLubyte c); _1_._1 )
void ggllIInnddeexxffvv( const GLfloat _*_c )
void ggllIInnddeexxiivv( const GLint _*_c )
void ggllIInnddeexxssvv( const GLshort _*_c )
void ggllIInnddeexxuubbvv( const GLubyte *c); _1_._1 )
The current index is stored as a floating-point value. Integer values are converted directly to floating-point values, with no special mapping. The initial value is 1.
Index values outside the representable range of the color index buffer are not clamped. However, before an index is dithered (if enabled) and written to the frame buffer, it is converted to fixed-point . Any bits in the integer portion of the resulting fixed-point value that do not correspond to bits in the frame buffer are masked out.
The current index can be updated at any time. In particular, ggllIInnddeexx can be called between a call to ggllBBeeggiinn and the corresponding call to ggllEEnndd.