tlutbind(3G)
tlutbind - selects a texture look up table
Showing IRIX 6.5.30 (default release). Unchanged since IRIX 6.5.
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 TL_TLUT_0. 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 TL_TLUT_0. Texture look-up table use is enabled when a texture function definition other than 0 is bound to TX_TEXTURE_0, and a texture environment definition other than 0 is bound to TV_ENV0 and a texture look up table definition other than 0 is bound to TL_TLUT_0. (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.