platform/upstream/mesa.git
11 years agoi965: Switch gen4-6 to using the sampler's base level for GL BASE_LEVEL.
Eric Anholt [Wed, 28 Aug 2013 18:53:09 +0000 (11:53 -0700)]
i965: Switch gen4-6 to using the sampler's base level for GL BASE_LEVEL.

Thanks to Ken for trawling through my neglected public branches and
finding the bug in this change (inside a megacommit) that made me abandon
this work.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
11 years agoi965/gen7: Use the base_level field of the sampler to handle GL's BASE_LEVEL.
Eric Anholt [Wed, 28 Aug 2013 19:06:31 +0000 (12:06 -0700)]
i965/gen7: Use the base_level field of the sampler to handle GL's BASE_LEVEL.

This avoids the need to get the inter- and intra-tile offset and adjust
our miptree info based on them.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
11 years agoi965: Add missing state reset at the end of blorp.
Eric Anholt [Tue, 18 Jun 2013 21:54:18 +0000 (14:54 -0700)]
i965: Add missing state reset at the end of blorp.

These are things that happen to be occurring because of the batch flush at
the start of the blorp op (which exists to prevent batch space or aperture
space overflow), but the intention was for this sequence of state resets at
the end of blorp to be everything necessary for the next draw call.

Found when debugging the next commit, by comparing brw_new_batch() and
intel_batchbuffer_reset() to brw_blorp_exec().

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965: Drop extra flush when calling intel_miptree_map_raw().
Eric Anholt [Tue, 27 Aug 2013 19:33:48 +0000 (12:33 -0700)]
i965: Drop extra flush when calling intel_miptree_map_raw().

The code that got replaced with map_raw didn't do the flush, but now
map_raw() is responsible for it and we don't have to worry about it.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965: Make a slight distinction in perf debug for BOs versus miptrees.
Eric Anholt [Tue, 27 Aug 2013 19:25:58 +0000 (12:25 -0700)]
i965: Make a slight distinction in perf debug for BOs versus miptrees.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agointel: Reuse intel_glFlush().
Eric Anholt [Fri, 28 Dec 2012 20:25:14 +0000 (12:25 -0800)]
intel: Reuse intel_glFlush().

v2 (Kenneth Graunke): Rebase on latest master.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agointel: Add support for the new flush_with_flags extension.
Eric Anholt [Fri, 28 Dec 2012 19:44:08 +0000 (11:44 -0800)]
intel: Add support for the new flush_with_flags extension.

This gives us more information about why we're flushing that we can
use for handling our throttling.

v2 (Kenneth Graunke): Rebase on latest master, add missing
   FLUSH_VERTICES and FLUSH_CURRENT, which fixes a regression in Glean's
   polygonOffset test.
v3 (anholt): Drop FLUSH_CURRENT -- FLUSH_VERTICES is what we need, which
   is "get any queued prims out of VBO and into the driver", not "update
   ctx->Current so we can read it with the CPU."  Also drop batch->used
   check, which intel_batchbuffer_flush() does anyway.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agointel: Add a batch flush between front-buffer downsample and X protocol.
Eric Anholt [Fri, 28 Dec 2012 20:19:42 +0000 (12:19 -0800)]
intel: Add a batch flush between front-buffer downsample and X protocol.

This was already happening because blorp happens to flush at the end of
every call, but we have been talking about removing that at some point,
and this would surely get overlooked.

v2 (Kenneth Graunke): Rebase on latest master.  Note that we did remove
   the other flush, and this change actually did get overlooked!

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965: Directly call intel_batchbuffer_flush() after i915 split.
Eric Anholt [Tue, 27 Aug 2013 19:30:39 +0000 (12:30 -0700)]
i965: Directly call intel_batchbuffer_flush() after i915 split.

intel_flush() now did nothing except call through (and
intel_batchbuffer_flush() does the no-op check, too!)

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965/vs: Fix regression on pre-gen6 with no VS uniforms in use.
Eric Anholt [Fri, 30 Aug 2013 17:45:00 +0000 (10:45 -0700)]
i965/vs: Fix regression on pre-gen6 with no VS uniforms in use.

df06745c5adb524e15d157f976c08f1718f08efa made it so that we didn't
allocate extra uniform space for unused clip planes, which also
incidentally made us not allocate any space at all, which we were relying
on for this no-uniforms case.  Instead of putting the knowledge of this
special HW exception into the thing that normally preallocates prog_data
for us, just allocate it here.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68766
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
11 years agor600g: enable SB backend by default
Vadim Girlin [Fri, 23 Aug 2013 20:54:54 +0000 (00:54 +0400)]
r600g: enable SB backend by default

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
11 years agor600g: fix color exports when we have no CBs
Vadim Girlin [Sun, 25 Aug 2013 14:52:17 +0000 (18:52 +0400)]
r600g: fix color exports when we have no CBs

We need to export at least one color if the shader writes it,
even when nr_cbufs==0.

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
11 years agonvc0/ir: Initialize NVC0LegalizePostRA member variables.
Vinson Lee [Sat, 13 Jul 2013 06:56:06 +0000 (23:56 -0700)]
nvc0/ir: Initialize NVC0LegalizePostRA member variables.

Fixes "Uninitialized pointer field" defects reported by Coverity.

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
11 years agogallivm: support per-pixel min/mag filter in SoA path
Roland Scheidegger [Thu, 29 Aug 2013 23:30:29 +0000 (01:30 +0200)]
gallivm: support per-pixel min/mag filter in SoA path

Since we can have per-pixel lod we should also honor the filter per-pixel
(in fact we didn't honor it per quad neither in the multiple quad case).
Do this by running the linear path and simply beating the weights into shape
(the sample with the higher weight is the one which should have been chosen
with nearest filtering hence adjust filter weight to 1.0/0.0 based on that).
If all pixels use nearest filter (either min and mag) then still run just a
nearest filter as this is way cheaper (probably around 4 times faster for 2d,
more for 3d case) and it should be relatively rare that pixels really need
different filtering. OTOH if all pixels would require linear don't do anything
special since the linear path with filter adjustments shouldn't really be all
that much more expensive than ordinary linear, and we think it's rare that
min/mag filters are configured differently so there doesn't seem much value
in trying to optimize this further.
This does not yet fix the AoS path (though currently AoS is only used for
single quads hence it could be considered less broken, just never honoring
per-pixel filter decision but doing it per quad).

v2: simplify code a bit (unify min linear and min nearest cases)

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
11 years agogallivm: don't calculate square root of rho if we use accurate rho method
Roland Scheidegger [Thu, 29 Aug 2013 01:58:18 +0000 (03:58 +0200)]
gallivm: don't calculate square root of rho if we use accurate rho method

While a sqrt here and there shouldn't hurt much (depending on the cpu) it is
possible to completely omit it since rho is only used for calculating lod and
there log2(x) == 0.5*log2(x^2). Depending on the exact path taken for
calculating lod this means we get a simple mul instead of sqrt (in case of
nearest mip filter in fact we don't need to replace the sqrt with something
else at all), only in some not very useful path this doesn't work (combined
brilinear calculation of int level and fractional lod, accurate rho calc but
brilinear filtering seems odd).
Apart from being faster as an added bonus this should increase our crappy
fractional accuracy of lod, since fast_log2 is only good for ~3bits and this
should increase accuracy by one bit (though not used if dimension is just one
as we'd need an extra mul there as we never had the squared rho in the first
place).

v2: use separate ilog2_sqrt function if we have squared rho.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
11 years agogallivm: refactor num_lods handling
Roland Scheidegger [Wed, 28 Aug 2013 14:26:43 +0000 (16:26 +0200)]
gallivm: refactor num_lods handling

This is just preparation for per-pixel (or per-quad in case of multiple quads)
min/mag filter since some assumptions about number of miplevels being equal
to number of lods no longer holds true.
This change does not change behavior yet (though theoretically when forcing
per-element path it might be slower with different min/mag filter since the
code will respect this setting even when there's no mip maps now in this case,
so some lod calcs will be done per-element just ultimately still the same
filter used for all pixels).

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
11 years agoradeonsi: Early return if no depth or stencil on release builds.
Vinson Lee [Thu, 29 Aug 2013 20:13:02 +0000 (13:13 -0700)]
radeonsi: Early return if no depth or stencil on release builds.

Fixes "Missing break in switch" defect reported by Coverity.

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
11 years agofreedreno: pipe loader for either kgsl or msm
Rob Clark [Thu, 29 Aug 2013 21:26:16 +0000 (17:26 -0400)]
freedreno: pipe loader for either kgsl or msm

The downstream android kernel driver is "kgsl", the upstream drm/kms
driver is called "msm".  Since libdrm_freedreno handles the differences
between the two, we need to load the same thing for either device.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno: updates for msm drm/kms driver
Rob Clark [Thu, 29 Aug 2013 21:24:33 +0000 (17:24 -0400)]
freedreno: updates for msm drm/kms driver

There where some small API tweaks in libdrm_freedreno to enable support
for msm drm/kms driver.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx/compiler: handle sync flags better
Rob Clark [Tue, 27 Aug 2013 23:24:53 +0000 (19:24 -0400)]
freedreno/a3xx/compiler: handle sync flags better

We need to set the flag on all the .xyzw components that are written by
the instruction, not just on .x.  Otherwise a later use of rN.y (for
example) will not trigger the appropriate sync bit to be set.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx/compiler: better const handling
Rob Clark [Sat, 24 Aug 2013 21:30:50 +0000 (17:30 -0400)]
freedreno/a3xx/compiler: better const handling

Seems like most/all instructions have some restrictions about const src
registers.  In seems like the 2 src (cat2) instructions can take at most
one const, and the 3 src (cat3) instructions can take at most one const
in the first 2 arguments.  And so on.  Handle this properly now.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agoglsl: Allow precision qualifiers for sampler types
Anuj Phogat [Tue, 27 Aug 2013 01:21:03 +0000 (18:21 -0700)]
glsl: Allow precision qualifiers for sampler types

GLSL 1.30 doesn't allow precision qualifiers on sampler types,
but in GLSL ES, sampler types are also allowed. This seems like
an oversight (since the intention of including these in GLSL 1.30
is to allow compatibility with ES shaders).

Currently, Mesa allows "default" precision qualifiers to be set for
sampler types in GLSL (commit d5948f2). This patch makes it follow
GLSL ES rules and also allow declaring sampler variables with a
precision qualifier in GLSL 1.30 (and later). e.g.
uniform lowp sampler2D sampler;

This fixes a shader compilation error in Khronos OpenGL conformance
test "depth_texture_mipmap".

V2: Update comments.
Signed-off-by: Ian Romanick <idr@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Ian Romanick <idr@lists.freedesktop.org>
Cc: <mesa-stable@lists.freedesktop.org>
11 years agoglsl: Add heuristics to print floating-point numbers better.
Matt Turner [Sun, 4 Aug 2013 21:01:30 +0000 (14:01 -0700)]
glsl: Add heuristics to print floating-point numbers better.

v2: Fix *.expected files to match.
Reviewed-by: Paul Berry <strereotype441@gmail.com>
11 years agoradeonsi: Make sure libdrm_radeon headers are picked up from the right place
Jonathan Gray [Thu, 18 Jul 2013 13:05:13 +0000 (23:05 +1000)]
radeonsi: Make sure libdrm_radeon headers are picked up from the right place

And remove libdrm/ from a winsys include statement.

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
11 years agodraw: fix point/line/triangle determination in draw_need_pipeline()
Brian Paul [Wed, 28 Aug 2013 23:13:11 +0000 (17:13 -0600)]
draw: fix point/line/triangle determination in draw_need_pipeline()

The previous point/line/triangle() functions didn't handle GS primitives.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
11 years agoradeon/uvd: fix MPEG2/4 ref frame index limit
Christian König [Wed, 28 Aug 2013 16:55:56 +0000 (18:55 +0200)]
radeon/uvd: fix MPEG2/4 ref frame index limit

Otherwise the first few frames have an incorrect reference index.

Signed-off-by: Christian König <christian.koenig@amd.com>
11 years agonouveau: Copy m4x4 and m8x8 separately.
Vinson Lee [Sat, 17 Aug 2013 22:23:15 +0000 (15:23 -0700)]
nouveau: Copy m4x4 and m8x8 separately.

Silences Coverity "Out-of-bounds access" defect.

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
11 years agoi965: Allocate just enough space for user clip planes in uniform arrays.
Kenneth Graunke [Mon, 26 Aug 2013 04:38:29 +0000 (21:38 -0700)]
i965: Allocate just enough space for user clip planes in uniform arrays.

Previously, we allocated space in brw_vs_prog_data's params and
pull_params arrays for MAX_CLIP_PLANES vec4s---even when it wasn't
necessary.

On a 64-bit architecture, this used 0.5 kB of space (8 clip planes *
4 floats per plane * 8 bytes per float pointer * 2 arrays of pointers =
512 bytes).  Since this cost was per-vertex shader, it added up.

Conveniently, we already store the number of clip plane constants in the
program key.  By using that, we can allocate the exact amount of space
needed.  For the common case where user clipping is disabled, this means
0 bytes.

While we're here, mention exactly what code requires this extra space,
since it wasn't obvious.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965: Silence unused variable warning in release build
Chad Versace [Tue, 27 Aug 2013 22:08:00 +0000 (15:08 -0700)]
i965: Silence unused variable warning in release build

Use `(void) success;` to silence this warning:

  i965/brw_vs.c:481:12:
  warning: unused variable 'success' [-Wunused-variable]
         bool success = do_vs_prog(brw, ctx->Shader.CurrentVertexProgram,

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
11 years agodocs: minor fixes for 9.2 release notes
Brian Paul [Wed, 28 Aug 2013 00:57:35 +0000 (18:57 -0600)]
docs: minor fixes for 9.2 release notes

Fix incorrect </li> tag, fix language.
(cherry picked from commit 2377205bcb3bb0b5db48772224f5f80f2cf9abf7)

11 years agodocs: Add news item for 9.2 release
Ian Romanick [Tue, 27 Aug 2013 23:38:09 +0000 (16:38 -0700)]
docs: Add news item for 9.2 release

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
11 years agodocs: Import 9.2 release notes
Ian Romanick [Tue, 27 Aug 2013 23:37:13 +0000 (16:37 -0700)]
docs: Import 9.2 release notes

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
11 years agomesa/main: Check for 0 size draws after validation.
Fabian Bieler [Sat, 25 May 2013 11:33:42 +0000 (13:33 +0200)]
mesa/main: Check for 0 size draws after validation.

When validating draw parameters move check for 0 draw count last
(drawing with count 0 is not an error), so that other parameters (e.g.: the
primitive type) are validated and the correct errors (if applicable) are
generated.

>From the OpenGL 3.3 spec page 33 (page 48 of the PDF):
"[Regarding DrawArraysOneInstance, in terms of which other draw operations
are defined:]
If count is negative, an INVALID_VALUE error is generated."

This patch also changes the bahavior of MultiDrawElements to perform the draw
operation if some primitive's index counts are zero.

Signed-off-by: Fabian Bieler <fabianbieler@fastmail.fm>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoglsl: Add built-ins from ARB_shader_bit_encoding to ARB_gpu_shader5.
Matt Turner [Wed, 7 Aug 2013 04:45:30 +0000 (21:45 -0700)]
glsl: Add built-ins from ARB_shader_bit_encoding to ARB_gpu_shader5.

Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965/vs: Add support for translating ir_triop_fma into MAD.
Matt Turner [Fri, 2 Aug 2013 17:28:16 +0000 (10:28 -0700)]
i965/vs: Add support for translating ir_triop_fma into MAD.

Reviewed-by: Paul Berry <stereotype441@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
11 years agoi965/fs: Add support for translating ir_triop_fma into MAD.
Matt Turner [Wed, 24 Apr 2013 00:32:26 +0000 (17:32 -0700)]
i965/fs: Add support for translating ir_triop_fma into MAD.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
11 years agoi965/fs: Assert that ir_expressions are usable by 3-src instructions.
Matt Turner [Tue, 27 Aug 2013 05:01:17 +0000 (22:01 -0700)]
i965/fs: Assert that ir_expressions are usable by 3-src instructions.

MAD will be generated directly from ir_triop_fma, so this assertion
checks that all ir_expressions are usable.

Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoglsl: Add support for new fma built-in in ARB_gpu_shader5.
Matt Turner [Wed, 24 Apr 2013 00:19:06 +0000 (17:19 -0700)]
glsl: Add support for new fma built-in in ARB_gpu_shader5.

v2: Add constant folding support.
Reviewed-by: Paul Berry <stereotype441@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
11 years agoglsl: Add new fma built-in IR and prototype from ARB_gpu_shader5.
Matt Turner [Wed, 24 Apr 2013 00:10:20 +0000 (17:10 -0700)]
glsl: Add new fma built-in IR and prototype from ARB_gpu_shader5.

Reviewed-by: Paul Berry <stereotype441@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
11 years agor300g: enable MSAA on r300-r400, be careful about using color compression
Marek Olšák [Sun, 11 Aug 2013 00:15:12 +0000 (02:15 +0200)]
r300g: enable MSAA on r300-r400, be careful about using color compression

MSAA was tested by one user on RS690 and it works for him with color
compression (CMASK) disabled. Our theory is that his chipset lacks CMASK RAM.

Since we don't have hardware documentation about which chipsets actually have
CMASK RAM, I had to take a guess based on the presence of HiZ.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
11 years agoconfigure.ac: Bump Wayland requirement to 1.2.0
Fabio Pedretti [Mon, 12 Aug 2013 11:48:04 +0000 (13:48 +0200)]
configure.ac: Bump Wayland requirement to 1.2.0

Since 8d29b52 wayland 1.2.0 is required.

Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
11 years agodraw: clean up setting stream out information a bit
Roland Scheidegger [Fri, 23 Aug 2013 21:08:43 +0000 (23:08 +0200)]
draw: clean up setting stream out information a bit

In particular noone is interested in the vertex count, so drop that,
and also drop the duplicated num_primitives_generated /
so.primitives_storage_needed variables in drivers. I am unable for now to figure
out if primitives_storage_needed in SO stats (used for d3d10) should
increase if SO is disabled, though the equivalent num_primitives_generated
used for OpenGL definitely should increase. In any case we were only counting
when SO is active both in softpipe and llvmpipe anyway so don't pretend there's
an independent num_primitives_generated counter which would count always.
(This means the PIPE_QUERY_PRIMITIVES_GENERATED count will still be wrong just
as before, should eventually fix this by doing either separate counting for this
query or adjust the code so it always counts this even if SO is inactive depending
on what's correct for d3d10.)

Reviewed-by: Brian Paul <brianp@vmware.com>
11 years agollvmpipe: support nested/overlapping queries for all query types
Roland Scheidegger [Fri, 23 Aug 2013 19:25:01 +0000 (21:25 +0200)]
llvmpipe: support nested/overlapping queries for all query types

There's just no way resetting the counters is working with nested/overlapping
queries.

Reviewed-by: Brian Paul <brianp@vmware.com>
11 years agosoftpipe: support nested/overlapping queries for all query types
Roland Scheidegger [Fri, 23 Aug 2013 19:23:07 +0000 (21:23 +0200)]
softpipe: support nested/overlapping queries for all query types

There's just no way resetting the counters is working with nested/overlapping
queries.

Reviewed-by: Brian Paul <brianp@vmware.com>
11 years agoglsl: Disallow uniform block layout qualifiers on non-uniform block vars.
Matt Turner [Mon, 26 Aug 2013 21:14:03 +0000 (14:14 -0700)]
glsl: Disallow uniform block layout qualifiers on non-uniform block vars.

Cc: 9.2 <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68460
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
11 years agoFixed and/or order mistake, resulting in compiling llvmpipe without llvm installed
Kristian Lehmann [Mon, 26 Aug 2013 19:19:50 +0000 (21:19 +0200)]
Fixed and/or order mistake, resulting in compiling llvmpipe without llvm installed

Cc: 9.2 <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68544
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi915: Optimize SEQ and SNE when two operands are uniforms
Ian Romanick [Thu, 22 Aug 2013 02:37:30 +0000 (19:37 -0700)]
i915: Optimize SEQ and SNE when two operands are uniforms

SEQ and SNE are not native i915 instructions, so they each generate at
least 3 instructions.  If both operands are uniforms or constants, we
get 5 instructions like:

                U[1] = MOV CONST[1]
                U[0].xyz = SGE CONST[0].xxxx, U[1]
                U[1] = MOV CONST[1].-x-y-z-w
                R[0].xyz = SGE CONST[0].-x-x-x-x, U[1]
                R[0].xyz = MUL R[0], U[0]

This code is stupid.  Instead of having the individual calls to
i915_emit_arith generate the moves to utemps, do it in the caller.  This
results in code like:

                U[1] = MOV CONST[1]
                U[0].xyz = SGE CONST[0].xxxx, U[1]
                R[0].xyz = SGE CONST[0].-x-x-x-x, U[1].-x-y-z-w
                R[0].xyz = MUL R[0], U[0]

This allows fs-temp-array-mat2-index-col-wr and
fs-temp-array-mat2-index-row-wr to fit in hardware limits (instead of
falling back to software rasterization).

NOTE: Without pending patches to the piglit tests, these tests will now
fail.  This is an unrelated, pre-existing issue.

v2: Copy most of the body of the commit message into comments in the
code.  Suggested by Eric.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
11 years agoclover: Don't use PIPE_TRANSFER_UNSYNCHRONIZED for blocking copies
Tom Stellard [Tue, 27 Aug 2013 00:52:47 +0000 (17:52 -0700)]
clover: Don't use PIPE_TRANSFER_UNSYNCHRONIZED for blocking copies

CC: "9.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
11 years agost/clover: Add event to deps even if it has been triggered
Niels Ole Salscheider [Fri, 9 Aug 2013 09:59:26 +0000 (11:59 +0200)]
st/clover: Add event to deps even if it has been triggered

The command is submitted once the event has been triggered, but it might not
have completed yet. Therefore, we have to add it to deps in order to wait on it.

Signed-off-by: Niels Ole Salscheider <niels_ole@salscheider-online.de>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
11 years agost/clover: Profiling support
Niels Ole Salscheider [Fri, 9 Aug 2013 09:59:25 +0000 (11:59 +0200)]
st/clover: Profiling support

Signed-off-by: Niels Ole Salscheider <niels_ole@salscheider-online.de>
Acked-by: Francisco Jerez <currojerez@riseup.net>
11 years agotgsi_build: fix order of arguments for ind register build
Dave Airlie [Tue, 13 Aug 2013 00:13:12 +0000 (10:13 +1000)]
tgsi_build: fix order of arguments for ind register build

This was broken when arrayid was added.

Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
11 years agotgsi: finish declaration parsing for arrays.
Dave Airlie [Mon, 12 Aug 2013 07:34:27 +0000 (17:34 +1000)]
tgsi: finish declaration parsing for arrays.

I previously fixed this partly in 9e8400f4c95bde1f955c7977066583b507159a10,
however I didn't go far enough in testing it, now when I parse a TGSI shader
with arrays in it my iterator can see the ArrayID set to the proper value.

Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
11 years agosvga: replace 0 with PIPE_OK in a few places
Brian Paul [Mon, 26 Aug 2013 21:49:16 +0000 (15:49 -0600)]
svga: replace 0 with PIPE_OK in a few places

11 years agoswrast: init i0, i1 values to silence warnings
Brian Paul [Fri, 23 Aug 2013 21:33:14 +0000 (15:33 -0600)]
swrast: init i0, i1 values to silence warnings

Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
11 years agomesa: init dst values in COPY_CLEAN_4V_TYPE_AS_FLOAT()
Brian Paul [Fri, 23 Aug 2013 21:32:28 +0000 (15:32 -0600)]
mesa: init dst values in COPY_CLEAN_4V_TYPE_AS_FLOAT()

to silence gcc 4.8.1 warnings.  And improve the ASSERT(0) call.

Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
11 years agoglsl: init limit=0 to silence uninitialized var warning
Brian Paul [Fri, 23 Aug 2013 21:12:07 +0000 (15:12 -0600)]
glsl: init limit=0 to silence uninitialized var warning

Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965/vs: Allocate register set once at context creation.
Kenneth Graunke [Wed, 21 Aug 2013 23:27:11 +0000 (16:27 -0700)]
i965/vs: Allocate register set once at context creation.

Now that we use a fixed set of register classes, we can set up the
register set and conflict graphs once, at context creation, rather than
on every VS compile.  This is obviously less expensive, and also what
we already do in the FS backend.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965/vs: Move base_reg_count computation to brw_alloc_reg_set().
Kenneth Graunke [Thu, 22 Aug 2013 05:06:15 +0000 (22:06 -0700)]
i965/vs: Move base_reg_count computation to brw_alloc_reg_set().

We're soon going to be calling brw_alloc_reg_set() from outside of the
visitor, where we don't have the precomputed "max_grf" variable handy.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965/vs: Expose the payload registers to the register allocator.
Kenneth Graunke [Thu, 22 Aug 2013 04:55:40 +0000 (21:55 -0700)]
i965/vs: Expose the payload registers to the register allocator.

For now, nothing else can get allocated over them.  That may change at
some point in the future.

This also means that base_reg_count can be computed without knowing the
number of registers used for the payload, which is required if we want
to allocate the register set once at context creation time.

See commit 551e1cd44f6857f7e29ea4c8f892da5a97844377, which implemented
virtually identical code in the FS backend.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965/vs: Use a fixed set of register classes.
Kenneth Graunke [Wed, 21 Aug 2013 23:01:45 +0000 (16:01 -0700)]
i965/vs: Use a fixed set of register classes.

Arrays, structures, and matrices use large VGRFs of arbitrary sizes.
However, split_virtual_grfs() breaks those down into VGRFs of size 1.

For reference, commit 5d90b988791e51cfb6413109271ad102fd7a304c is the
analogous change to the FS backend.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
11 years agoi965: Allow C++ type safety in the use of enum brw_urb_write_flags.
Paul Berry [Fri, 23 Aug 2013 20:19:19 +0000 (13:19 -0700)]
i965: Allow C++ type safety in the use of enum brw_urb_write_flags.

(From a suggestion by Francisco Jerez)

If an enum represents a bitfield of flags, e.g.:

enum E {
  A = 1,
  B = 2,
  C = 4,
  D = 8,
};

then C++ normally prohibits statements like this:

enum E x = A | B;

because A and B are implicitly converted to ints before OR-ing them,
and an int can't be stored in an enum without a type cast.  C, on the
other hand, allows an int to be implicitly converted to an enum
without casting.

In the past we've dealt with this situation by storing flag bitfields
as ints.  This avoids ugly casting at the expense of some type safety
that C++ would normally have offered (e.g. we get no warning if we
accidentally use the wrong enum type).

However, we can get the best of both worlds if we override the |
operator.  The ugly casting is confined to the operator overload, and
we still get the benefit of C++ making sure we don't use the wrong
enum type.

v2: Remove unnecessary comment and unnecessary use of "enum" keyword.
Use static_cast.

Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
11 years agoi965: Remove redundant (and uninitialized) field vec4_generator::ctx.
Paul Berry [Fri, 23 Aug 2013 00:15:04 +0000 (17:15 -0700)]
i965: Remove redundant (and uninitialized) field vec4_generator::ctx.

We never noticed that this field was uninitialized because it is only
used in an error path that reports internal Mesa errors.

But it's silly to have it around anyway because &brw->ctx is
equivalent.

Should fix Coverity defect CID 1063351: Uninitialized pointer field
(UNINIT_CTOR) /src/mesa/drivers/dri/i965/brw_vec4_emit.cpp: 148

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
11 years agoi965: Don't try to fall back when creating unrecognized program targets.
Paul Berry [Fri, 23 Aug 2013 18:43:26 +0000 (11:43 -0700)]
i965: Don't try to fall back when creating unrecognized program targets.

If brwNewProgram is asked to create a program for an unrecognized
target, don't bother falling back on _mesa_new_program().  That just
hides bugs.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
v2: Use assert() rather than _mesa_problem().

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
11 years agoradeonsi: Also set the depth component mask bit for stencil-only exports
Michel Dänzer [Fri, 23 Aug 2013 12:55:45 +0000 (14:55 +0200)]
radeonsi: Also set the depth component mask bit for stencil-only exports

The stencil values come out wrong without this for some reason.

50 more little piglits.

Cc: mesa-stable@lists.freedesktop.org
11 years agoglsl: Add built-in function prototypes for GLSL 3.30
Kenneth Graunke [Fri, 23 Aug 2013 23:03:03 +0000 (16:03 -0700)]
glsl: Add built-in function prototypes for GLSL 3.30

330.frag is a direct copy of 150.frag.
330.glsl is 150.glsl combined with ARB_shader_bit_encoding.glsl.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoglsl: Bump standalone compiler versions to 3.30.
Kenneth Graunke [Fri, 23 Aug 2013 23:52:07 +0000 (16:52 -0700)]
glsl: Bump standalone compiler versions to 3.30.

These are necessary in order to compile the built-in functions.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agomesa: Set query->EverBound in glQueryCounter().
Kenneth Graunke [Fri, 23 Aug 2013 17:35:34 +0000 (10:35 -0700)]
mesa: Set query->EverBound in glQueryCounter().

glIsQuery is supposed to return false for names returned by glGenQueries
until their first use.  BeginQuery is a use, but QueryCounter is also a
use.

From the ARB_timer_query spec:
"A timer query object is created with the command

      void QueryCounter(uint id, enum target);

 [...] If <id> is an unused query object name, the
 name is marked as used [...]"

Fixes Piglit's spec/ARB_timer_query/query-lifetime.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Cc: mesa-stable@lists.freedesktop.org
11 years agor600g: Implement the new float comparison instructions for Cayman as well.
Henri Verbeet [Sat, 24 Aug 2013 19:45:44 +0000 (21:45 +0200)]
r600g: Implement the new float comparison instructions for Cayman as well.

I assume this should have been part of commit
7727fbb7c5d64348994bce6682e681d6181a91e9. This (obviously) fixes a lot tests.

Signed-off-by: Henri Verbeet <hverbeet@gmail.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
11 years agonv30: add forgotten PIPE_CAP_CUBE_MAP_ARRAY cap to list
Ilia Mirkin [Mon, 19 Aug 2013 10:49:45 +0000 (06:49 -0400)]
nv30: add forgotten PIPE_CAP_CUBE_MAP_ARRAY cap to list

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "9.2" <mesa-stable@lists.freedesktop.org>
11 years agonouveau/video: avoid overwriting base codec init with template
Ilia Mirkin [Sat, 24 Aug 2013 04:50:52 +0000 (00:50 -0400)]
nouveau/video: avoid overwriting base codec init with template

Commit 53e20b8b introduced the use of a template to initialize some
common fields. Move this copying of fields to before the common vp3
fields are initialized.

Reported-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Christian König <christian.koenig@amd.com>
11 years agofreedreno/a3xx: don't leak so much
Rob Clark [Tue, 18 Jun 2013 00:11:54 +0000 (20:11 -0400)]
freedreno/a3xx: don't leak so much

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx/compiler: fix SGT/SLT/etc
Rob Clark [Sat, 24 Aug 2013 17:02:53 +0000 (13:02 -0400)]
freedreno/a3xx/compiler: fix SGT/SLT/etc

The cmps.f.* instruction doesn't actually seem to give a float 1.0 or
0.0 output.  It either needs a cov.u16f16 or add.s + sel.f16.  This
makes SGT/SLT/etc more similar to CMP, so handle them in trans_cmp().

This fixes a bunch of piglit tests.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx/compiler: bit of re-arrange/cleanup
Rob Clark [Sat, 24 Aug 2013 17:00:07 +0000 (13:00 -0400)]
freedreno/a3xx/compiler: bit of re-arrange/cleanup

It seems there are a number of cases where instructions have limitations
about taking reading src's from const register file, so make
get_unconst() a bit easier to use.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx/compiler: make compiler errors more useful
Rob Clark [Sat, 24 Aug 2013 16:56:22 +0000 (12:56 -0400)]
freedreno/a3xx/compiler: make compiler errors more useful

We probably should get rid of assert() entirely, but at this stage it is
more useful for things to crash where we can catch it in a debugger.
With compile_error() we have a single place to set an error flag (to
bail out and return an error on the next instruction) so that will be a
small change later when enough of the compiler bugs are sorted.

But re-arrange/cleanup the error/assert stuff so we at least get a dump
of the TGSI that triggered it.  So we see some useful output in piglit
logs.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno: fix segfault when no color buffer bound
Rob Clark [Wed, 21 Aug 2013 17:20:05 +0000 (13:20 -0400)]
freedreno: fix segfault when no color buffer bound

Don't crash when no color buffer bound.  Something caught when starting
to run piglit, fixes a hanful of piglit tests.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx/compiler: cat4 cannot use const reg as src
Rob Clark [Tue, 20 Aug 2013 17:57:22 +0000 (13:57 -0400)]
freedreno/a3xx/compiler: cat4 cannot use const reg as src

Category 4 instructions (rsq, rcp, sqrt, etc) seem to be unable to take
a const register as src.  In these cases we need to move the src to a
temporary gpr first.

This is the second case of such a restriction, where the instruction
encoding appears to support a const src, but in fact the hw appears to
ignore that bit.  So split things out into a helper that can be re-used
for any instructions which have this limitation.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx/compiler: use max_reg rather than file_count
Rob Clark [Tue, 20 Aug 2013 17:54:01 +0000 (13:54 -0400)]
freedreno/a3xx/compiler: use max_reg rather than file_count

Our current (rather naive) register assignment is based on mapping
different register files (INPUT, OUTPUT, TEMP, CONST, etc) based on the
max register index of the preceding file.  But in some cases, the lowest
used register in a file might not be zero.  In which case
file_count[file] != file_max[file] + 1.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx/compiler: handle saturate on dst
Rob Clark [Tue, 20 Aug 2013 17:51:35 +0000 (13:51 -0400)]
freedreno/a3xx/compiler: handle saturate on dst

Sometimes things other than color dst need saturating, like if there is
a 'clamp(foo, 0.0, 1.0)'.  So for saturated dst add the extra
instructions to fix up dst.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx/compiler: fix CMP
Rob Clark [Tue, 20 Aug 2013 17:46:30 +0000 (13:46 -0400)]
freedreno/a3xx/compiler: fix CMP

The 1st src to add.s needs (r) flag (repeat), otherwise it will end up:

  add.s dst.xyzw, tmp.xxxx -1

instead of:

  add.s dst.xyzw, tmp.xyzw, -1

Also, if we are using a temporary dst to avoid clobbering one of the src
registers, we actually need to use that as the dst for the sel
instruction.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx: some texture fixes
Rob Clark [Mon, 5 Aug 2013 22:03:33 +0000 (18:03 -0400)]
freedreno/a3xx: some texture fixes

Stop hard coding bits that indicate texture type (2d/3d/cube/etc).

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno: update register headers
Rob Clark [Mon, 5 Aug 2013 21:57:24 +0000 (17:57 -0400)]
freedreno: update register headers

resync w/ rnndb database

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno: add debug option to disable scissor optimization
Rob Clark [Wed, 29 May 2013 14:16:33 +0000 (10:16 -0400)]
freedreno: add debug option to disable scissor optimization

Useful for testing and debugging.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx: fix viewport on gmem->mem resolve
Rob Clark [Sat, 13 Jul 2013 17:08:22 +0000 (13:08 -0400)]
freedreno/a3xx: fix viewport on gmem->mem resolve

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agofreedreno/a3xx: fix color inversion on mem->gmem restore
Rob Clark [Sat, 13 Jul 2013 17:07:46 +0000 (13:07 -0400)]
freedreno/a3xx: fix color inversion on mem->gmem restore

Signed-off-by: Rob Clark <robclark@freedesktop.org>
11 years agoradeonsi: Handle additional PIPE_COMPUTE_CAP_*
Niels Ole Salscheider [Fri, 9 Aug 2013 09:59:30 +0000 (11:59 +0200)]
radeonsi: Handle additional PIPE_COMPUTE_CAP_*

This patch adds support for:
PIPE_COMPUTE_CAP_MAX_INPUT_SIZE
PIPE_COMPUTE_CAP_MAX_LOCAL_SIZE

Return the values reported by the closed source driver for now.

Signed-off-by: Niels Ole Salscheider <niels_ole@salscheider-online.de>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
11 years agoradeonsi: copy r600_get_timestamp
Niels Ole Salscheider [Fri, 9 Aug 2013 09:59:29 +0000 (11:59 +0200)]
radeonsi: copy r600_get_timestamp

Signed-off-by: Niels Ole Salscheider <niels_ole@salscheider-online.de>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
11 years agoradeonsi: Implement PIPE_QUERY_TIMESTAMP
Niels Ole Salscheider [Fri, 9 Aug 2013 09:59:28 +0000 (11:59 +0200)]
radeonsi: Implement PIPE_QUERY_TIMESTAMP

Signed-off-by: Niels Ole Salscheider <niels_ole@salscheider-online.de>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
11 years agogallivm: fix min/mag switchover point for nearest/none mip filter
Roland Scheidegger [Fri, 23 Aug 2013 02:33:32 +0000 (04:33 +0200)]
gallivm: fix min/mag switchover point for nearest/none mip filter

Previously, the min/mag switchover point when using nearest/none mip
filter was effectively -0.5 which can't be right. Looks like new OpenGL
thinks it's ok if it's always 0.0 (older versions required 0.5 in some
cases), let's hope everybody else thinks that's fine too.
Refactor this slightly and get the per-quad/per-pixel min/mag decision
values further down to sampling, though still only the first component
is used yet.
While here also fix code trying to skip lod bias application etc. when
mipfilter is none, as this is still needed for determining min/mag filter.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
11 years agogallium/osmesa: Link, not copy, the shared library to the LIB_DIR.
Jon Severinsson [Fri, 23 Aug 2013 09:19:01 +0000 (11:19 +0200)]
gallium/osmesa: Link, not copy, the shared library to the LIB_DIR.

Just like all other mesa libraries...

CC: "9.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agogallium/osmesa: Always link with the c++ linker.
Jon Severinsson [Fri, 23 Aug 2013 09:19:00 +0000 (11:19 +0200)]
gallium/osmesa: Always link with the c++ linker.

Just like all other gallium targets...

CC: "9.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agogallium/osmesa: Make and install an osmesa.pc.
Jon Severinsson [Fri, 23 Aug 2013 09:18:59 +0000 (11:18 +0200)]
gallium/osmesa: Make and install an osmesa.pc.

As of "2f142d59 build: Add --enable-gallium-osmesa flag." the pkgconfig
file from classic osmesa is no longer installed when building gallium
osmesa, so copy it to gallium osmesa and install the copy instead.

CC: "9.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi965/gs: Add a data structure for tracking VS output VUE map.
Paul Berry [Fri, 22 Mar 2013 19:34:19 +0000 (12:34 -0700)]
i965/gs: Add a data structure for tracking VS output VUE map.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi965/vec4: Make a function for setting up vec4 program key clip info.
Paul Berry [Tue, 11 Jun 2013 21:23:12 +0000 (14:23 -0700)]
i965/vec4: Make a function for setting up vec4 program key clip info.

This functionality will need to be reused by geometry shaders.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi965: Make prim_to_hw_prim accessible outside brw_draw.c.
Paul Berry [Wed, 27 Mar 2013 19:39:37 +0000 (12:39 -0700)]
i965: Make prim_to_hw_prim accessible outside brw_draw.c.

We will need access to this array in order to configure the geometry
shader.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi965/gs: add GS visitors.
Paul Berry [Tue, 19 Feb 2013 15:31:16 +0000 (07:31 -0800)]
i965/gs: add GS visitors.

This patch introduces the vec4_gs_visitor class, which translates
geometry shaders from GLSL IR to back-end opcodes.

This class is derived from vec4_visitor (which is also the base class
for vec4_vs_visitor), so as a result most of the back end code is
shared.  The only parts that differ are:

- Geometry shaders use a different input payload organization, since
  the inputs need to match up with the outputs of the previous
  pipeline stage (vec4_gs_visitor::setup_payload() and
  vec4_gs_visitor::setup_varying_inputs()).

- Geometry shader input array dereferences need a special stride
  computation, since all geometry shader inputs are interleaved into
  one giant array (vec4_gs_visitor::compute_array_stride()).

- There are no geometry shader system values
  (vec4_gs_visitor::make_reg_for_system_value()).

- At the beginning of a geometry shader, extra data in R0 needs to be
  zeroed out, and a vertex counter needs to be initialized
  (vec4_gs_visitor::emit_prolog()).

- When EmitVertex() appears in the shader, the current contents of
  output variables need to be emitted to the URB, and the vertex
  counter needs to be incremented
  (vec4_gs_visitor::visit(ir_emit_vertex *)).

- When generating a URB_WRITE message to output vertex data, the
  current state of the vertex counter needs to be used to store a
  write offset in the message header
  (vec4_gs_visitor::emit_urb_write_header()).

- The URB_WRITE message that outputs vertex data needs to be sent
  using GS_OPCODE_URB_WRITE, since VS_OPCODE_URB_WRITE would overwrite
  the offsets in the message header
  (vec4_gs_visitor::emit_urb_write_opcode()).

- At the end of a geometry shader, the final vertex count needs to be
  delivered using a URB WRITE message
  (vec4_gs_visitor::emit_thread_end()).

- EndPrimitive() functionality is not implemented yet
  (vec4_gs_visitor::visit(ir_end_primitive *)).

- There is no support for assembly shaders
  (vec4_gs_visitor::emit_program_code()).

v2: Make num_input_vertices const.  Refer to registers as rN rather
than gN, for consistency with the PRM.  Fix misspelling.  Improve
comment in the ir_emit_vertex visitor explaining why we emit vertices
inside a conditional.  Enclose the conditional code in the
ir_emit_vertex visitor between curly braces.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi965/gs: Add GS_OPCODE_SET_DWORD_2_IMMED.
Paul Berry [Tue, 19 Feb 2013 15:31:16 +0000 (07:31 -0800)]
i965/gs: Add GS_OPCODE_SET_DWORD_2_IMMED.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi965/gs: Add GS_OPCODE_SET_VERTEX_COUNT.
Paul Berry [Sat, 23 Mar 2013 15:18:43 +0000 (08:18 -0700)]
i965/gs: Add GS_OPCODE_SET_VERTEX_COUNT.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi965/gs: Add GS_OPCODE_SET_WRITE_OFFSET.
Paul Berry [Sat, 23 Mar 2013 14:59:13 +0000 (07:59 -0700)]
i965/gs: Add GS_OPCODE_SET_WRITE_OFFSET.

v2: Added a comment to vec4_generator::generate_gs_set_write_offset().

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi965/gs: Add GS_OPCODE_THREAD_END.
Paul Berry [Sat, 23 Mar 2013 14:42:32 +0000 (07:42 -0700)]
i965/gs: Add GS_OPCODE_THREAD_END.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
11 years agoi965/gs: Add GS_OPCODE_URB_WRITE.
Paul Berry [Thu, 21 Mar 2013 16:11:12 +0000 (09:11 -0700)]
i965/gs: Add GS_OPCODE_URB_WRITE.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>