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- sssstttteeeennnnssssiiiizzzzeeee((((3333GGGG)))) sssstttteeeennnnssssiiiizzzzeeee((((3333GGGG))))
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- NNNNAAAAMMMMEEEE
- sssstttteeeennnnssssiiiizzzzeeee - specify the number of bit planes desired to comprise the
- stencil buffer
-
- CCCC SSSSPPPPEEEECCCCIIIIFFFFIIIICCCCAAAATTTTIIIIOOOONNNN
- vvvvooooiiiidddd sssstttteeeennnnssssiiiizzzzeeee((((lllloooonnnngggg ppppllllaaaannnneeeessss))))
-
- PPPPAAAARRRRAAAAMMMMEEEETTTTEEEERRRRSSSS
- _p_l_a_n_e_s is the number of bit planes requested to be configured as
- stencil planes. Only values 0 through 8 are accepted. The
- default is 0.
-
- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- sssstttteeeennnnssssiiiizzzzeeee specifies how many bit planes are requested to be configured as
- stencil planes. The constraints on _p_l_a_n_e_s are machine dependent. Call
- ggggeeeettttggggddddeeeesssscccc((((GGGGDDDD____BBBBIIIITTTTSSSS____SSSSTTTTEEEENNNNCCCCIIIILLLL)))) to determine the maximum number of bit planes
- available for stencil operation.
-
- sssstttteeeennnnssssiiiizzzzeeee takes effect only after ggggccccoooonnnnffffiiiigggg has been called. The number of
- bit planes granted for the stencil buffer may not be exactly what was
- requested. Call ggggeeeettttggggccccoooonnnnffffiiiigggg((((GGGGCCCC____BBBBIIIITTTTSSSS____SSSSTTTTEEEENNNNCCCCIIIILLLL)))) to determine how many bit
- planes were configured as stencil buffer planes.
-
- Because stencil bit planes are available only in the normal framebuffer,
- sssstttteeeennnnssssiiiizzzzeeee should be called only while draw mode is NNNNOOOORRRRMMMMAAAALLLLDDDDRRRRAAAAWWWW.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- drawmode, gconfig, getgconfig, stencil, mssize
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- NNNNOOOOTTTTEEEESSSS
- This routine is available only in immediate mode.
-
- IRIS-4D B, G, GT, and GTX models, as well as the Personal Iris, Indy,
- Iris Indigo Entry, and XL, do not support sssstttteeeennnnssssiiiizzzzeeee.
-
- XS, XS24, XZ, Elan and Extreme systems support up to 4 stencil planes,
- which are borrowed from the Z buffer. The resolution of the Z buffer
- decreases when using stencil planes on Elan systems.
-
- On the IRIS-4D RealityEngine models the stencil buffer and the stencil
- component in the multisample buffer are independent. When the
- multisample buffer is requested in the current framebuffer configuration,
- it is recommended to call sssstttteeeennnnssssiiiizzzzeeee((((0000)))), as no stencil buffer planes are
- required.
-
- BBBBUUUUGGGGSSSS
- IRIS-4D VGX machines without the optional alpha bit planes allocate
- stencil bit planes from the least-significant Z buffer bit planes. Z
- buffer operation compensates for this allocation automatically, so the
- programmer is aware of the allocation only when the Z buffer contents are
- read back using llllrrrreeeeccccttttrrrreeeeaaaadddd. Use ggggeeeettttggggddddeeeesssscccc to determine whether your
- machine has alpha bit planes.
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- PPPPaaaaggggeeee 1111
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