fglIndex(3G) OpenGL Reference fglIndex(3G)NAME
fglIndexd, fglIndexf, fglIndexi, fglIndexs, fglIndexub, fglIndexdv,
fglIndexfv, fglIndexiv, fglIndexsv, fglIndexubv - set the current color
index
FORTRAN SPECIFICATION
SUBROUTINE fglIndexd( REAL*4 c )
SUBROUTINE fglIndexf( REAL*4 c )
SUBROUTINE fglIndexi( INTEGER*4 c )
SUBROUTINE fglIndexs( INTEGER*2 c )
SUBROUTINE fglIndexub( INTEGER*1 c )
PARAMETERS
c Specifies the new value for the current color index.
FORTRAN SPECIFICATION
SUBROUTINE fglIndexdv( CHARACTER*8 c )
SUBROUTINE fglIndexfv( CHARACTER*8 c )
SUBROUTINE fglIndexiv( CHARACTER*8 c )
SUBROUTINE fglIndexsv( CHARACTER*8 c )
SUBROUTINE fglIndexubv( CHARACTER*256 c )
PARAMETERS
c Specifies a pointer to a one-element array that contains the new
value for the current color index.
DESCRIPTION
fglIndex 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.
NOTES
fglIndexub and fglIndexubv are available only if the GL version is 1.1 or
greater.
The current index can be updated at any time. In particular, fglIndex
can be called between a call to fglBegin and the corresponding call to
fglEnd.
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fglIndex(3G) OpenGL Reference fglIndex(3G)ASSOCIATED GETS
fglGet with argument GL_CURRENT_INDEX
SEE ALSO
fglColor, fglIndexPointer
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