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- cccclllleeeeaaaarrrr((((3333GGGG)))) cccclllleeeeaaaarrrr((((3333GGGG))))
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- NNNNAAAAMMMMEEEE
- cccclllleeeeaaaarrrr - clears the viewport
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- CCCC SSSSPPPPEEEECCCCIIIIFFFFIIIICCCCAAAATTTTIIIIOOOONNNN
- vvvvooooiiiidddd cccclllleeeeaaaarrrr(((())))
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- PPPPAAAARRRRAAAAMMMMEEEETTTTEEEERRRRSSSS
- _n_o_n_e
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- cccclllleeeeaaaarrrr sets the bitplane area of the viewport to the current color.
- Multiple bitplane buffers can be cleared simultaneously using the
- bbbbaaaacccckkkkbbbbuuuuffffffffeeeerrrr, ffffrrrroooonnnnttttbbbbuuuuffffffffeeeerrrr, and zzzzddddrrrraaaawwww commands. Current polygon fill
- pattern and writemask affect the operation of cccclllleeeeaaaarrrr. The screen mask,
- when it is set to a subregion of the viewport, bounds the cleared region.
- Alpha function, blend function, logical operation, stenciling, texture
- mapping, and z buffering, however, are ignored by cccclllleeeeaaaarrrr. Stencil and z
- buffer contents are not affected by cccclllleeeeaaaarrrr (except in the special case of
- zzzzddddrrrraaaawwww).
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- Like other drawing commands, cccclllleeeeaaaarrrr operates on the currently active
- framebuffer, one of normal, popup, overlay, or underlay, based on the
- current draw mode (see ddddrrrraaaawwwwmmmmooooddddeeee).
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- After cccclllleeeeaaaarrrr executes, the graphics position is undefined.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- afunction, backbuffer, blendfunction, czclear, defpattern, drawmode,
- frontbuffer, logicop, scrmask, setpattern, stencil, texbind, zbuffer,
- zdraw
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- NNNNOOOOTTTTEEEE
- On the IRIS-4D B, G, GT, GTX, and VGX models, cccclllleeeeaaaarrrr runs faster when the
- window is completely unobscured.
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- On the Personal Iris, XS, XS24, XZ, Elan and Extreme systems, cccclllleeeeaaaarrrr runs
- faster when the visible window area consists of four or fewer rectangular
- regions.
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- PPPPaaaaggggeeee 1111
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