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See the conversation between myself and Tommy Schultz Lassen on mesa3d-dev.
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This reverts commit 07ac2386f5c0ab9c2432d4b5e3490b1e13d033fc.
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Apparently for back facing color to work you must set all 3 color bits; I guess
the hardware cannot handle them separately.
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1. Use more reasonable hither/yon clip planes to make better use of shallow
(16-bit) z buffers.
2. Use different colors on cube faces to help detect Z fighting if it occurs.
3. Report GL_DEPTH_BITS on start-up.
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The previous procedure would often result in a GPU lockup.
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This avoids superfluous waits for vblank timing out under some circumstances.
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Not doing this could lead to double frees under rare circumstances.
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width/height/depth == 0 is a legal texture size (no error generated).
Later, the texture will be considered incomplete, however, and texturing
will effectively be disabled.
See bug 11309.
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Also, check if we're in RGB vs. CI mode. This fixes a problem with
incorrect rendering color seen with the redbook/polys demo.
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The t_dd_tritemp.h code can emit GL_QUADS primitives. We need to catch
that case to determine if polygon stipple should be enabled.
Fixes bug reported by Carlos Diógenes on 4 July 2007.
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of -I flags.
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