glIndexd, glIndexf, glIndexi, glIndexs, glIndexub, glIndexdv, glIndexfv,
glIndexiv, glIndexsv, glIndexubv
- set the current color index
( GLdouble c
( GLfloat c
( GLint c
( GLshort c
( GLubyte c
- Specifies the new value for the current color index.
( const GLdouble *c
( const GLfloat *c
( const GLint *c
( const GLshort *c
( const GLubyte *c
- Specifies a pointer to a one-element array that contains the new value for
the current color 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. 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 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.
are available only if the GL version is
1.1 or greater.
The current index can be updated at any time. In particular, glIndex
be called between a call to glBegin
and the corresponding call to
with argument GL_CURRENT_INDEX