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This is basically half of Keith's draw/flush patch.
The stage->point/line/tri() functions are now self-validating, the validator
functions are installed by the flush() function.
There were excessive calls to validate_pipeline(), however. This was caused
by draw_prim_queue_flush() keeping a local 'first' variable that always pointed
to the validate functions. Replaced 'first' with 'draw->pipeline.first'.
Performance in gears is up just slightly with this patch.
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Remove all dependencies on vertex_info, except for draw_vbuf.
Drawing stages now strictly operate on post-transformed vertices and don't
know anything about hw vertices.
Use vertex program output info for two-side/flat/etc stages.
Temporarily disable vbuf module in softpipe driver.
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state
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Added a new draw_set_twoside_attributes() function for specifying which
vertex attributes are to be copied/replaced when a polygon is back-facing.
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The code is all in place, but mostly disabled for now:
In t_vp_build.c, write the VERT_RESULT_PSIZE register
In sp_state_derived.c, need to emit vertex point size if drawing points.
In setup_point() use the point size from the vertex.
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Edge flags were random/undefined otherwise.
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Replace VF_ATTRIB_x with TGSI_ATTRIB_x
When converting mesa programs to TGSI programs, also convert the InputsRead
and OutputsWritten to a mask of TGSI_ATTRIB_ bits.
Still need to do conversion for vertex programs...
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Basic i915 2D texturing seems to work now.
The vertex format is determined from the current fragment shader.
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To build with mesa, need -DMESA in makefile/config file.
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Also added draw_stage::reset_line_stipple(). There may be a better way
of doing that though.
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If the determinant of the triangle is positive, its winding is CCW (right-handed coord system).
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