tlutbind(3G) — IRIX 6.5.3f



tlutbind(3G)                                                      tlutbind(3G)



NAME
     tlutbind -  selects a texture look up table

C SPECIFICATION
     void tlutbind(long target, long index)

PARAMETERS
     target   expects the texture resource to which the texture function
              definition is to be bound.  There is one appropriate resource
              TLTLUT0.

     index    expects the name of the texture function that is being bound.
              Name is the index passed to texdef2d when the texture function
              was defined.

DESCRIPTION
     Texture coordinates, s,t,u may be specified at geometry vertices,
     similarly to color, depth, and vertex normals.  The texture coordinates
     are interpolated from the values specified at the vertices for each
     screen pixel touched by the geometry.  A texture function maps the
     texture coordinates s,t, or s,t,u, corresponding to a screen pixel into
     nc values, called texture function outputs, using an image and a set of
     properties. The texture function outputs may be translated with a texture
     look-up table.  The texture function outputs are used by the texture
     environment function to modify the screen pixel color.

     texdef2d and texdef3d define a texture function and texbind selects which
     texture function definition to use.  The texture environment function is
     defined by tevdef and selected by tevbind. The texture look-up table is
     defined by tlutdef and selected by tlutbind. The texture coordinates are
     specified with the t family of commands.

     By default texture look up table  definition 0 is bound to TLTLUT0.
     Texture look-up table use is enabled when a texture function definition
     other than 0 is bound to TXTEXTURE0, and a texture environment
     definition other than 0 is bound to TVENV0 and a texture look up table
     definition other than 0 is bound to TLTLUT0.  (See tevbind texbind.)

SEE ALSO
     t, texbind tevbind, tlutdef, tevdef, texdef2d

NOTES
     IRIS-4D G, GT, and GTX models, and the Personal Iris, do not support
     texture mapping.  texbind is ignored by these machines.  The Iris Indy,
     Indigo Entry, and XL support texture mapping except for lines.  Use
     getgdesc to determine whether texture mapping is supported.

     texbind cannot be used while mmode is MSINGLE.







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