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This controls whether texcoords are interpreted as-is or scaled up from [0,1].
Fixes glDrawPixels/glBitmap problems on i915 when image is non power-of-two.
Also, cleans up the CSO sampler state for i915 a bit.
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ignore stencil
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ignored for now
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texture and level!=0)
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Previously, output[0] was always Z and output[1] was color. Now output[0]
will be color if Z is not written.
In shade_quad() use the semantic info to determine which quantity is in
which output slot.
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fragment shader writes Z.
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Unfortunately, the generated fragment shader code is effectively unusable until
it handles quad->mask.
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structure so allocate a private copy of it.
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in the state functions.
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This, plus expanding all instructions ahead of time, seems to have improved
the performance of program execution by 8x or so.
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Fixes crash when GL_BASE_LEVEL!=0.
Also, remove old assertion.
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This reverts commit 6dcfddb8e2ec2bfb6187b912807fa65f28da2c5e.
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Build a buffer of contigous vertices and indices at the backend of our
software transformation/clipping path. This will become the mechanism
for emitting buffers of vertices to rasterization hardware.
This is similar to but not the same as the post-transform vertex cache.
In particular, these vertices are subject to clipping, culling, poly offset,
etc. The vertices emitted will all be used by hardware.
TODOs include the actual transformation to hardware vertex formats, moving
this out of softpipe to somewhere more useful and allowing >1 primitive to
share the generated VB.
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