commit 4f106f44a32eaddb6cf3fea6ba5ee9787bff609a
Author: Brian Paul <brianp@vmware.com>
Date: Mon Dec 13 14:06:08 2010 -0700
st/mesa: reorganize vertex program translation code
Now it looks like the fragment and geometry program code.
Also remove the serial number fields from programs. It was used to
determine when new translations were needed. Now the variant key is
used for that. And the st_program_string_notify() callback removes all
variants when the program's code is changed.
commit e12d6791c5e4bff60bb2e6c04414b1b4d1325f3e
Author: Brian Paul <brianp@vmware.com>
Date: Mon Dec 13 13:38:12 2010 -0700
st/mesa: implement geometry shader varients
Only needed in order to support per-context gallium shaders.
commit c5751c673644808ab069259a852f24c4c0e92b9d
Author: Brian Paul <brianp@vmware.com>
Date: Sun Dec 12 15:28:57 2010 -0700
st/mesa: restore glDraw/CopyPixels using new fragment program variants
Clean up the logic for fragment programs for glDraw/CopyPixels. We now
generate fragment program variants for glDraw/CopyPixels as needed which
do texture sampling, pixel scale/bias, pixelmap lookups, etc.
commit 7b0bb99bab6547f503a0176b5c0aef1482b02c97
Author: Brian Paul <brianp@vmware.com>
Date: Fri Dec 10 17:03:23 2010 -0700
st/mesa: checkpoint: implement fragment program variants
The fragment programs variants are per-context, as the vertex programs.
NOTE: glDrawPixels is totally broken at this point.
commit 2cc926183f957f8abac18d71276dd5bbd1f27be2
Author: Brian Paul <brianp@vmware.com>
Date: Fri Dec 10 14:59:32 2010 -0700
st/mesa: make vertex shader variants per-context
Gallium shaders are per-context but OpenGL shaders aren't. So we need
to make a different variant for each context.
During context tear-down we need to walk over all shaders/programs and
free all variants for the context being destroyed.
st_program.h
Remove p_shader_tokens.h
Include st_context.h for st_context symbol.
Include p_state.h for PIPE_MAX_SHADER_INPUTS symbol.
Remove unnecessary forward declarations.
st_cb_bitmap.c
st_cb_clear.c
Include p_shader_tokens.h now that st_program.h doesn't include it.
The idea here is to eliminate the set_edgeflags() call in pipe_context
by treating edgeflags as a regular vertex element.
Edgeflags provoke special treatment in hardware, which means we need to
label them in some way, in this case we'll be passing them through the
vertex shader and labelling the vertex shader output with a new TGSI
semantic (TGSI_SEMANTIC_EDGEFLAG).
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.
In some cases, the vertex program output's semantic info didn't match up
with the fragment program's input semantic info. This info is now explicitly
passed into the st_translate_fragment_program() function.
Use _mesa_reference_vert/fragprog() wherever we assign program pointers.
Fixes a memory corruption bug found with glean/api2 test.
Another memory bug involving shaders yet to be fixed...
Picked from gallium-0.1
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...
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.
Previously, programs were translated independently during validation.
The problem is the translation to TGSI format, which packs shader
input/outputs into continuous slots, depends on which vertex program is
being paired with which fragment shader. Now, we look at the outputs
of the vertex program in conjunction with the inputs of the fragment shader
to be sure the attributes match up correctly.
The new 'linked_program_pair' class keeps track of the associations
between vertex and fragment shaders. It's also the place where the TGSI
tokens are kept since they're no longer per-program state but per-linkage.
Still a few loose ends, like implementing some kind of hash/lookup table
for linked_program_pairs.
TGSI_ATTRIB_x tokens still present and used in a few places.
Expanded set of TGSI_SEMANTIC_x tokens for describing the meaning
of inputs/outputs. These tokens are in a crude state ATM.
Lots of #if 0 / disabled code to be removed yet, etc...
Softpipe and i915 drivers should be in working condition but not heavily tested.
This is a step toward removing TGSI_ATTRIB_ tokens.
Basically, when translating Mesa programs to TGSI programs, pass in input and
output register re-maps, plus interpolation info.
There's some known breakage (cubemap.c) so more to be done...
