gl.Index(c)
gl.Index()
updates the current (single-valued) color index. It takes one argument, the new value for the current color index.
The current index is stored as a floating-point value. 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 format. 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, gl.Index()
can be called between a call to gl.Begin()
and the corresponding call to gl.End().
Please consult an OpenGL reference manual for more information.
#GL_CURRENT_INDEX