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glIndex(3G)

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NAME    [Toc]    [Back]

       glIndex,  glIndexd,  glIndexf,  glIndexi,  glIndexs, glIndexub,
 glIndexdv, glIndexfv, glIndexiv,  glIndexsv,  glIndexubv
 - set the current color index

SYNOPSIS    [Toc]    [Back]

       void glIndexd(
               GLdouble c ); void glIndexf(
               GLfloat c ); void glIndexi(
               GLint c ); void glIndexs(
               GLshort c ); void glIndexub(
               GLubyte c );

PARAMETERS    [Toc]    [Back]

       Specifies the new value for the current color index.

SYNOPSIS    [Toc]    [Back]

       void glIndexdv(
               const GLdouble *c ); void glIndexfv(
               const GLfloat *c ); void glIndexiv(
               const GLint *c ); void glIndexsv(
               const GLshort *c ); void glIndexubv(
               const GLubyte *c );

PARAMETERS    [Toc]    [Back]

       Specifies  a  pointer to a one-element array that contains
       the new value for the current color index.

DESCRIPTION    [Toc]    [Back]

       glIndex() 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 . 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    [Toc]    [Back]

       glIndexub() and glIndexubv() are available only if the  GL
       version is 1.1 or greater.

       The  current index can be updated at any time. In particular,
 glIndex() can be called between a call  to  glBegin()
       and the corresponding call to glEnd().

ASSOCIATED GETS    [Toc]    [Back]

       glGet() with argument GL_CURRENT_INDEX








SEE ALSO    [Toc]    [Back]

      
      
       glColor(3)(), glIndexPointer(3)



                                                      glIndex(3G)
[ Back ]
 Similar pages
Name OS Title
color IRIX sets the color index in the current draw mode
glclearindex IRIX specify the clear value for the color index buffers
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glLogicOp Tru64 specify a logical pixel operation for color index rendering
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