_p_a_r_a_m Specifies a symbolic constant, which must be either
GGGGLLLL____CCCCUUUURRRRRRRREEEENNNNTTTT____RRRRAAAASSSSTTTTEEEERRRR____CCCCOOOOLLLLOOOORRRR or GGGGLLLL____PPPPIIIIXXXXEEEELLLL____GGGGRRRROOOOUUUUPPPP____CCCCOOOOLLLLOOOORRRR____SSSSGGGGIIIISSSS.
The pixel texture function is enabled by calling ffffggggllllEEEEnnnnaaaabbbblllleeee and disabled
by calling ffffggggllllDDDDiiiissssaaaabbbblllleeee with GGGGLLLL____PPPPIIIIXXXXEEEELLLL____TTTTEEEEXXXXTTTTUUUURRRREEEE____SSSSGGGGIIIISSSS. Pixel texture affects
the result of ffffggggllllDDDDrrrraaaawwwwPPPPiiiixxxxeeeellllssss and ffffggggllllCCCCooooppppyyyyPPPPiiiixxxxeeeellllssss operations by converting
color components into texture coordinates. Because texture mapping is
essentially a multidimensional table lookup, this conversion supports
multidimensional color lookups for images. Such multidimensional lookups
can be used to implement very accurate color space conversions.
When pixel texture is enabled, the red, green, blue, and alpha components
are used to generate s, t, r, and q texture coordinates, respectively.
If a valid texture has been defined, and texture-mapping enabled, these
texture coordinates will produce, in effect, a function of the color
components, which can then be blended with the original color components,
according to the texture environment blend function.
Texture coordinates can be generated from either the pixel color or the
current raster position's color values. The source of the red, green,
and blue values can be selected separately from the source of the alpha
values by calling ffffggggllllPPPPiiiixxxxeeeellllTTTTeeeexxxxGGGGeeeennnnPPPPaaaarrrraaaammmmeeeetttteeeerrrrSSSSGGGGIIIISSSS with different values of
GGGGLLLL____IIIINNNNVVVVAAAALLLLIIIIDDDD____EEEENNNNUUUUMMMM is generated when _p_n_a_m_e is not an accepted defined value.
GGGGLLLL____IIIINNNNVVVVAAAALLLLIIIIDDDD____EEEENNNNUUUUMMMM is generated when _p_a_r_a_m_s is not an accepted defined
value.
GGGGLLLL____IIIINNNNVVVVAAAALLLLIIIIDDDD____OOOOPPPPEEEERRRRAAAATTTTIIIIOOOONNNN is generated if ffffggggllllPPPPiiiixxxxeeeellllTTTTeeeexxxxGGGGeeeennnnPPPPaaaarrrraaaammmmeeeetttteeeerrrrSSSSGGGGIIIISSSS is
executed between the execution of ffffggggllllBBBBeeeeggggiiiinnnn and the execution of the
ffffggggllllPPPPiiiixxxxeeeellllTTTTeeeexxxxGGGGeeeennnnPPPPaaaarrrraaaammmmeeeetttteeeerrrrSSSSGGGGIIIISSSS is supported only on Octane2 VPro systems.
Octane2 VPro systems support only the GGGGLLLL____PPPPIIIIXXXXEEEELLLL____GGGGRRRROOOOUUUUPPPP____CCCCOOOOLLLLOOOORRRR____SSSSGGGGIIIISSSS mode for
GGGGLLLL____PPPPIIIIXXXXEEEELLLL____FFFFRRRRAAAAGGGGMMMMEEEENNNNTTTT____RRRRGGGGBBBB____SSSSOOOOUUUURRRRCCCCEEEE____SSSSGGGGIIIISSSS and