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now.
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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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We were doing this for the sake of softpipe and the tgsi intergrepter since
we always need the fragment position and W-coordinate information in order
to compute fragment interpolants.
But that's not appropriate for hardware drivers.
The tgsi interpreter now get x,y,w information from a separate tgsi_exec_vector
variable setup by softpipe.
The new pipe_shader_state->input_map[] defines how vert shader outputs map
to frag shader inputs. It may go away though, since one can also examine
the semantic label on frag shader input[0] to figure things out.
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Add a 'CheckQuery()' driver callback to mesa to check query completion.
Make pipe_query an opaque type.
Rework softpipe queries, support overlapping occlusion queries.
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The effect of this mapping can be acheived by the state tracker and
setting up the pipe texture state pointers to incorporate its affects.
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Something similar will return when geometry shaders are added, but for now
this interface is not required.
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pipe->get_tex_surface() has to be used for access to texture image data.
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Early depth test is enabled when depth test is enabled and
alpha test is disabled and fragment shader does not write
depth.
The early-z is implemented by moving the depth test stage
just before the fragment shader stage and prepending it
with an earlyz stage, introduced with this commit.
The earlyz stage prepares the quad->outputs.depth for
the following depth test stage by interpolating Z position,
just as the fragment shader would do.
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Use FREE, MALLOC, CALLOC, GETENV wrappers.
Silence compiler warnings.
Add proper copyrights.
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This is the last of the clean-up following the change which moved surface
allocation to the winsys layer.
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GLSL sampler variables indicate which texture unit to use for TEX instructions.
Previously, this was baked into the fragment/vertex program and couldn't be
readily changed once set.
Now, SamplerUnits[] array indicates which texture unit is to be used for
each sampler variable. These values are set with glUniform1i().
This is extra state that must be passed to the fragment/vertex program
executor at runtime.
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Also, quite a bit of re-org of the tile caches and surface mapping/unmapping.
Leave surfaces mapped between primitives now.
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Unfortunately, the generated fragment shader code is effectively unusable until
it handles quad->mask.
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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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Remove/disable the attrib/slot mapping arrays in a few places.
Work in progress...
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state
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Converting depth and stencil objects into a single state object
(d3d10 like) and making it immutable.
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Switch the sample to be an immutable state object.
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We want our state objects to be immutable, handled via the
create/bind/delete calls instead of struct propagation.
Only implementing the blend state to see how it would look like
and work.
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This replaces the temporary occlusion counter functions we had before.
Added new ctx->Driver.WaitQuery() function which should block until the result is ready.
Sketch out some code for vertex transformation feedback counters.
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to cpy.
One less dependency on the TGSI_ATTRIB_x flags.
This requires setting the vertex_info->interp_mode[] values in the i915 driver and passing them to draw_set_vertex_attributes().
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They're now totally independent of the actual shaders.
Also, implemented in terms of pipe_buffer_handles/objects.
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We weren't mapping all the needed vertex array buffers.
Move array state that was temporarily in draw_context to softpipe_context.
Remove a bunch of dead code.
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Renamed pipe_fs_state to pipe_shader_state since it can be used for both
vertex and fragment shader info.
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Mainly down to the support for legacy TNL processing now.
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This interface is defined by softpipe and any window system (eg i915pipe)
wishing to use softpipe is required to implement the interface.
Currently the interface is all about buffer management.
Generalizing, each pipe driver will advertise an interface in a similar
spirit to this, and again any window system driver wishing to use that
rendering pipeline will have to implement the interface it defines. It
clearly isn't a one-way street however, as softpipe could just do its own
buffer management with malloc. The interaction with a buffer manager is
desired to allow us to exercise the hardware swapbuffers functionality of
the i915pipe driver, and also to get a feel for the way hardware drivers
which really need a buffer manager will work.
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The cliprect depends on the scissor rect (if enabled), otherwise the drawing
surface bounds.
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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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