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Translate vertex shaders independently of fragment shaders.
Previously tried to make fragment shader semantic indexes always start
at zero and exclude holes. This was unnecessary but meant that vertex
shader translation had to be adjusted to take this into account.
Now use a fixed scheme for labelling special FS input semantics
(color, etc), and another fixed scheme for the generics.
With this, vertex shaders can be translated independently of the bound
fragment shader, assuming mesa has done its own job and ensured that
the vertex shader provides at least the inputs the fragment shader is
looking for. The state-tracker didn't attempt to do anything about
this previously, so it shouldn't be needed now.
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At last it's possible to turn on tgsi dumps and other debugging in the
state tracker without modifying sources...
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Brian's patch to clean up the shader interfaces.
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Use the code in cso_context.c rather than st_cache.c.
Basically, binding of state objects now goes through the CSO module.
But Vertex/fragment shaders go through pipe->bind_fs/vs_state() since they're
not cached by the CSO module at this time.
Also, update softpipe driver to handle NULL state objects in various places.
This happens during context destruction. May need to update other drivers...
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Update the Makefiles and includes for the new paths.
Note that there hasn't been no separation of the Makefiles yet, and make is
jumping all over the place. That will be taken care shortly. But for now, make
should work. It was tested with linux and linux-dri. Linux-cell and linux-llvm
might require some minor tweaks.
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The CSO returned by pipe->create_vs_state() can't be passed to the
private draw module. That was causing glRasterPos to blow up.
Add a 'draw_shader' field to st_vertex_program for use with the private
draw module.
Change st_context->state.vs type from cso_vertex_shader to st_vertex_program.
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