platform/upstream/mesa.git
9 years agomesa: add additional checks for uniform location query
Tapani Pälli [Mon, 26 Oct 2015 09:13:14 +0000 (11:13 +0200)]
mesa: add additional checks for uniform location query

Patch adds additional check to make sure we don't return locations for
structures or arrays of structures.

From page 79 of the OpenGL 4.2 spec:
    "A valid name cannot be a structure, an array of structures, or any
    portion of a single vector or a matrix."

v2: use without-array() to simplify code (Timothy)

No Piglit or CTS regressions observed.

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
9 years agodocs: add news item and link release notes for 11.0.4
Emil Velikov [Sun, 25 Oct 2015 10:17:08 +0000 (10:17 +0000)]
docs: add news item and link release notes for 11.0.4

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
9 years agodocs: add sha256 checksums for 11.0.4
Emil Velikov [Sun, 25 Oct 2015 10:04:09 +0000 (10:04 +0000)]
docs: add sha256 checksums for 11.0.4

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
(cherry picked from commit ec14e6f8fd05999b482e0785d8cd286042c9c254)

9 years agodocs: add release notes for 11.0.4
Emil Velikov [Sat, 24 Oct 2015 18:34:01 +0000 (19:34 +0100)]
docs: add release notes for 11.0.4

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
(cherry picked from commit 31bf24703193cc23961923e01548b1acb2760a93)

9 years agoi965: Make brw_varying_to_offset take a const pointer to the VUE map.
Kenneth Graunke [Sun, 26 Jul 2015 04:29:28 +0000 (21:29 -0700)]
i965: Make brw_varying_to_offset take a const pointer to the VUE map.

It doesn't modify it.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
9 years agovc4: Fix names of the 16-bit unpacks
Eric Anholt [Wed, 5 Aug 2015 04:23:53 +0000 (21:23 -0700)]
vc4: Fix names of the 16-bit unpacks

They're only f16-to-f32 on a float operation, otherwise they're
i16-to-i32.

9 years agovc4: Don't try to register coalesce into the VPM across non-raw MOVs.
Eric Anholt [Sun, 25 Oct 2015 00:38:26 +0000 (17:38 -0700)]
vc4: Don't try to register coalesce into the VPM across non-raw MOVs.

No known bugs, just something I noticed while updating optimization code
for other changes.

9 years agovc4: Take advantage of the 8888 pack function in pack_unorm_4x8.
Eric Anholt [Sun, 25 Oct 2015 00:04:49 +0000 (17:04 -0700)]
vc4: Take advantage of the 8888 pack function in pack_unorm_4x8.

One instruction instead of four, and it turns out you do this a lot for
the Over operator.

total uniforms in shared programs: 32168 -> 32087 (-0.25%)
uniforms in affected programs:     318 -> 237 (-25.47%)
total instructions in shared programs: 89830 -> 89472 (-0.40%)
instructions in affected programs:     6434 -> 6076 (-5.56%)

9 years agovc4: Fix the test for skipping raw MOVs.
Eric Anholt [Sat, 24 Oct 2015 23:30:30 +0000 (16:30 -0700)]
vc4: Fix the test for skipping raw MOVs.

I don't know what previous test was trying to do, but it dates back to the
first add of vc4_qpu_emit.c.  No change to shader-db.

9 years agoi965: Remove unused devinfo revision
Ben Widawsky [Fri, 23 Oct 2015 21:38:39 +0000 (14:38 -0700)]
i965: Remove unused devinfo revision

I left the function to obtain the revision because it is, and will continue to
be useful in the future. I'd rather not have to dig it up every time we need it.
Comments left at the implementation to say as much.

This was accidentally left here when I moved the early platform support:
commit 28ed1e08e8ba98ebd4ff0b56326372f0df9c73ad
Author: Ben Widawsky <benjamin.widawsky@intel.com>
Date:   Fri Aug 7 13:58:37 2015 -0700

    i965/skl: Remove early platform support

Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
9 years agodocs/index.html: fix typo
Fabio Pedretti [Thu, 15 Oct 2015 08:00:23 +0000 (10:00 +0200)]
docs/index.html: fix typo

Reviewed-by: Boyan Ding <boyan.j.ding@gmail.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
9 years agofreedreno: remove unnecessary null checks
Rob Clark [Fri, 23 Oct 2015 17:37:26 +0000 (13:37 -0400)]
freedreno: remove unnecessary null checks

According to piglit/xonotic/neverball/stc, blend/rasterize/zsa state
will always be bound (never null).  And the null checks were in-
consistent anyways, so remove them.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
9 years agoradeonsi: Implement DCC fast clear.
Bas Nieuwenhuizen [Fri, 23 Oct 2015 23:47:45 +0000 (01:47 +0200)]
radeonsi: Implement DCC fast clear.

Uses the DCC buffer instead of the CMASK buffer. The ELIMINATE_FAST_CLEAR
still works. Furthermore, with DCC compression we can directly clear
to a limited set of colors such that we do not need a postprocessing step.

v2 Marek: check dcc_buffer && dirty_level_mask in set_sampler_view

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
9 years agogallivm: fix tex offsets with mirror repeat linear
Roland Scheidegger [Thu, 22 Oct 2015 21:58:50 +0000 (23:58 +0200)]
gallivm: fix tex offsets with mirror repeat linear

Can't see why anyone would ever want to use this, but it was clearly broken.
This fixes the piglit texwrap offset test using this combination.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
9 years agogallivm: fix sampling with texture offsets in SoA path
Roland Scheidegger [Thu, 22 Oct 2015 21:49:41 +0000 (23:49 +0200)]
gallivm: fix sampling with texture offsets in SoA path

When using nearest filtering and clamp / clamp to edge wrapping results could
be wrong for negative offsets. Fix this by adding the offset before doing
the conversion to int coords (could also use floor instead of trunc int
conversion but probably more complex on "typical" cpu).

This fixes the piglit texwrap offset failures with this filter/wrap combo
(which only leaves the linear/mirror repeat combination broken).

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
9 years agosoftpipe: fix using non-zero layer in non-array view from array resource
Roland Scheidegger [Thu, 22 Oct 2015 20:28:28 +0000 (22:28 +0200)]
softpipe: fix using non-zero layer in non-array view from array resource

For vertex/geometry shader sampling, this is the same as for llvmpipe - just
use the original resource target.
For fragment shader sampling though (which does not use first-layer based mip
offsets) adjust the sampling code to use first_layer in the non-array cases.
While here also fix up some code which looked wrong wrt buffer texel fetch
(no piglit change).

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
9 years agollvmpipe: fix using non-zero layer in non-array view from array resource
Roland Scheidegger [Thu, 22 Oct 2015 20:26:52 +0000 (22:26 +0200)]
llvmpipe: fix using non-zero layer in non-array view from array resource

Just need to use resource target not view target when calculating
first-layer based mip offsets. (This is a gl specific problem since
d3d10 does not distinguish between non-array and array resources neither
at the resource nor view level, only at the shader level.)
Fixes new piglit arb_texture_view sampling-2d-array-as-2d-layer test.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
9 years agoradeonsi: add Stoney to si_init_gs_info()
Alex Deucher [Fri, 23 Oct 2015 22:31:57 +0000 (18:31 -0400)]
radeonsi: add Stoney to si_init_gs_info()

This patch was originally written before stoney support
was merged.  Add stoney.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
9 years agoradeonsi: Enable DCC.
Bas Nieuwenhuizen [Tue, 20 Oct 2015 22:10:39 +0000 (00:10 +0200)]
radeonsi: Enable DCC.

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
9 years agoradeonsi: Add FLUSH_AND_INV_CB_DATA_TS for DCC.
Bas Nieuwenhuizen [Tue, 20 Oct 2015 22:10:38 +0000 (00:10 +0200)]
radeonsi: Add FLUSH_AND_INV_CB_DATA_TS for DCC.

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
9 years agoradeonsi: Disable operations that do not work with DCC.
Bas Nieuwenhuizen [Tue, 20 Oct 2015 22:10:37 +0000 (00:10 +0200)]
radeonsi: Disable operations that do not work with DCC.

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
9 years agoradeonsi: Allocate buffers for DCC.
Bas Nieuwenhuizen [Tue, 20 Oct 2015 22:10:36 +0000 (00:10 +0200)]
radeonsi: Allocate buffers for DCC.

As the alignment requirements can be 32 KiB or more, also adding
an aligned buffer creation function.

DCC is disabled for textures that can be shared as sharing the
DCC buffers has not been implemented yet.

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
9 years agoradeonsi: only apply the SNORM blit workaround to *8_SNORM
Marek Olšák [Thu, 22 Oct 2015 21:36:11 +0000 (23:36 +0200)]
radeonsi: only apply the SNORM blit workaround to *8_SNORM

Like the comment says. This fixes DCC, which doesn't like blitting RG16
as RGBA8.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoutil/format: add helper util_format_is_snorm8
Marek Olšák [Thu, 22 Oct 2015 21:32:16 +0000 (23:32 +0200)]
util/format: add helper util_format_is_snorm8

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: add another requirement for PARTIAL_ES_WAVE
Marek Olšák [Mon, 19 Oct 2015 00:45:56 +0000 (02:45 +0200)]
radeonsi: add another requirement for PARTIAL_ES_WAVE

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: merge two ifs setting WD_SWITCH_ON_EOP
Marek Olšák [Sun, 18 Oct 2015 20:22:22 +0000 (22:22 +0200)]
radeonsi: merge two ifs setting WD_SWITCH_ON_EOP

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: make PARTIAL_ES_WAVE globally dependent on SWITCH_ON_EOI
Marek Olšák [Sun, 18 Oct 2015 20:17:04 +0000 (22:17 +0200)]
radeonsi: make PARTIAL_ES_WAVE globally dependent on SWITCH_ON_EOI

This catches the other cases that enable SWITCH_ON_EOI.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: add one more SWITCH_ON_EOI requirement for Hawaii and VI
Marek Olšák [Sun, 18 Oct 2015 20:07:01 +0000 (22:07 +0200)]
radeonsi: add one more SWITCH_ON_EOI requirement for Hawaii and VI

The VI condition depends on geometry shaders and MAX_PRIMGRP_IN_WAVE.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: only apply the instancing bug workaround to Bonaire
Marek Olšák [Sun, 18 Oct 2015 19:51:41 +0000 (21:51 +0200)]
radeonsi: only apply the instancing bug workaround to Bonaire

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: add SWITCH_ON_EOI requirement for 4 SE parts
Marek Olšák [Sun, 18 Oct 2015 19:43:30 +0000 (21:43 +0200)]
radeonsi: add SWITCH_ON_EOI requirement for 4 SE parts

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: remove unnecessary PARTIAL_VS_WAVE setting for streamout
Marek Olšák [Sun, 18 Oct 2015 19:28:54 +0000 (21:28 +0200)]
radeonsi: remove unnecessary PARTIAL_VS_WAVE setting for streamout

hardware does this automatically

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: allow unbinding vertex shaders
Marek Olšák [Thu, 22 Oct 2015 19:32:23 +0000 (21:32 +0200)]
radeonsi: allow unbinding vertex shaders

Draw calls without a vertex shader are skipped.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: allow unbinding pixel shaders and remove the dummy shader
Marek Olšák [Thu, 22 Oct 2015 20:19:34 +0000 (22:19 +0200)]
radeonsi: allow unbinding pixel shaders and remove the dummy shader

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: add draw_vbo check for a NULL pixel shader
Marek Olšák [Thu, 22 Oct 2015 20:18:49 +0000 (22:18 +0200)]
radeonsi: add draw_vbo check for a NULL pixel shader

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agoradeonsi: add checks for a NULL pixel shader
Marek Olšák [Thu, 22 Oct 2015 20:17:28 +0000 (22:17 +0200)]
radeonsi: add checks for a NULL pixel shader

This will allow removing the dummy PS.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agogallium/util: add a test for NULL fragment shaders
Marek Olšák [Thu, 22 Oct 2015 20:14:53 +0000 (22:14 +0200)]
gallium/util: add a test for NULL fragment shaders

Just to validate that radeonsi doesn't crash.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
9 years agost/mesa: don't load state parameters if there are none
Marek Olšák [Thu, 22 Oct 2015 17:46:07 +0000 (19:46 +0200)]
st/mesa: don't load state parameters if there are none

Out of 7063 shaders from my shader-db:
- 6564 (93%) shaders don't have any state parameters.
- 347 (5%) shaders have 1 state parameter for WPOS lowering.
- The remaining 2% have more state parameters, usually matrices.

Reviewed-by: Brian Paul <brianp@vmware.com>
9 years agoradeonsi: add Stoney pci ids
Samuel Li [Thu, 22 Oct 2015 16:06:43 +0000 (12:06 -0400)]
radeonsi: add Stoney pci ids

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Samuel Li <samuel.li@amd.com>
Cc: mesa-stable@lists.freedesktop.org
9 years agoradeonsi: add support for Stoney asics (v3)
Samuel Li [Fri, 21 Aug 2015 19:35:46 +0000 (15:35 -0400)]
radeonsi: add support for Stoney asics (v3)

v2 (agd): rebase on mesa master, split pci ids to
separate commit
v3 (agd): use carrizo for llvm processor name for
llvm 3.7 and older

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Samuel Li <samuel.li@amd.com>
Cc: mesa-stable@lists.freedesktop.org
9 years agonvc0: respect edgeflag attribute width
Ilia Mirkin [Fri, 23 Oct 2015 06:14:31 +0000 (02:14 -0400)]
nvc0: respect edgeflag attribute width

The edgeflag comes in as ubyte with glEdgeFlagPointer but as float with
plain immediate glEdgeFlag. Avoid reading bytes that weren't meant for
the edgeflag in the pointer case.

Fixes intermittent failures with gl-2.0-edgeflag piglit (and valgrind
complaints about reading uninitialized memory).

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: mesa-stable@lists.freedesktop.org
9 years agogallivm: Explicitly disable unsupported CPU features.
Jose Fonseca [Fri, 23 Oct 2015 10:40:25 +0000 (11:40 +0100)]
gallivm: Explicitly disable unsupported CPU features.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92214
CC: "10.6 11.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
9 years agovc4: Convert blending to being done in 4x8 unorm normally.
Eric Anholt [Wed, 19 Aug 2015 16:38:14 +0000 (09:38 -0700)]
vc4: Convert blending to being done in 4x8 unorm normally.

We can't do this all the time, because you want blending to be done in
linear space, and sRGB would lose too much precision being done in 4x8.
The win on instructions is pretty huge when you can, though.

total uniforms in shared programs: 32065 -> 32168 (0.32%)
uniforms in affected programs:     327 -> 430 (31.50%)
total instructions in shared programs: 92644 -> 89830 (-3.04%)
instructions in affected programs:     15580 -> 12766 (-18.06%)

Improves openarena performance at 1920x1080 from 10.7fps to 11.2fps.

9 years agovc4: Add QIR/QPU support for the 8-bit vector instructions.
Eric Anholt [Fri, 9 Jan 2015 02:07:15 +0000 (18:07 -0800)]
vc4: Add QIR/QPU support for the 8-bit vector instructions.

9 years agovc4: Don't try to CSE non-SSA instructions.
Eric Anholt [Fri, 23 Oct 2015 15:34:01 +0000 (16:34 +0100)]
vc4: Don't try to CSE non-SSA instructions.

This can happen when we're doing destination packing -- we don't know
what's in the rest of the register.

Signed-off-by: Eric Anholt <eric@anholt.net>
9 years agonir: Add opcodes for saturated vector math.
Eric Anholt [Wed, 19 Aug 2015 05:38:34 +0000 (22:38 -0700)]
nir: Add opcodes for saturated vector math.

This corresponds to instructions used on vc4 for its blending inside of
shaders.  I've seen these opcodes on other architectures before, but I
think it's the first time these are needed in Mesa.

v2: Rename to 'u' instead of 'i', since they're all 'u'norm (from review
    by jekstrand)

9 years agovc4: Add dumping of VC4_PACKET_GL_INDEXED_PRIMITIVE.
Eric Anholt [Fri, 23 Oct 2015 14:26:12 +0000 (15:26 +0100)]
vc4: Add dumping of VC4_PACKET_GL_INDEXED_PRIMITIVE.

9 years agovc4: Add a workaround for HW-2116 (state counter wrap fails).
Eric Anholt [Fri, 23 Oct 2015 13:43:41 +0000 (14:43 +0100)]
vc4: Add a workaround for HW-2116 (state counter wrap fails).

I haven't proven that this happens (I've got other GPU hangs in the
way), but the closed driver also does this and it's documented as an
errata.

9 years agovc4: Fix missing \n in a perf_debug().
Eric Anholt [Fri, 23 Oct 2015 13:41:47 +0000 (14:41 +0100)]
vc4: Fix missing \n in a perf_debug().

9 years agoi965/fs: Allow copy propagating into new surface access opcodes
Kristian Høgsberg Kristensen [Wed, 21 Oct 2015 06:22:27 +0000 (23:22 -0700)]
i965/fs: Allow copy propagating into new surface access opcodes

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Kristian Høgsberg Kristensen <krh@bitplanet.net>
9 years agoi965/fs: Optimize ssbo stores
Kristian Høgsberg Kristensen [Thu, 22 Oct 2015 06:43:34 +0000 (23:43 -0700)]
i965/fs: Optimize ssbo stores

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Write groups of enabled components together.

Signed-off-by: Kristian Høgsberg Kristensen <krh@bitplanet.net>
9 years agoi965/fs: Drop offset_reg temporary in ssbo load
Kristian Høgsberg Kristensen [Thu, 22 Oct 2015 05:49:14 +0000 (22:49 -0700)]
i965/fs: Drop offset_reg temporary in ssbo load

Now that we don't read each component one-by-one, we don't need the
temoprary vgrf for the offset. More importantly, this register was type
UD while the nir source was type D. This broke copy propagation and left
a redundant MOV in the generated code.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Kristian Høgsberg Kristensen <krh@bitplanet.net>
9 years agoi965/fs: Avoid scalar destinations in emit_uniformize()
Kristian Høgsberg Kristensen [Wed, 21 Oct 2015 06:31:49 +0000 (23:31 -0700)]
i965/fs: Avoid scalar destinations in emit_uniformize()

The scalar destination registers break copy propagation. Instead compute
the results to a regular register and then reference a component when we
later use the result as a source.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Kristian Høgsberg Kristensen <krh@bitplanet.net>
9 years agoi965/fs: Don't uniformize surface index twice
Kristian Høgsberg Kristensen [Wed, 21 Oct 2015 06:16:51 +0000 (23:16 -0700)]
i965/fs: Don't uniformize surface index twice

The emit_untyped_read and emit_untyped_write helpers already uniformize
the surface index argument. No need to do it before calling them.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Kristian Høgsberg Kristensen <krh@bitplanet.net>
9 years agoi965/fs: Use unsigned immediate 0 when eliminating SHADER_OPCODE_FIND_LIVE_CHANNEL
Kristian Høgsberg Kristensen [Wed, 21 Oct 2015 06:07:56 +0000 (23:07 -0700)]
i965/fs: Use unsigned immediate 0 when eliminating SHADER_OPCODE_FIND_LIVE_CHANNEL

The destination for SHADER_OPCODE_FIND_LIVE_CHANNEL is always a UD
register.  When we replace the opcode with a MOV, make sure we use a UD
immediate 0 so copy propagation doesn't bail because of non-matching
types.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Kristian Høgsberg Kristensen <krh@bitplanet.net>
9 years agoi965/fs: Read all components of a SSBO field with one send
Kristian Høgsberg Kristensen [Sat, 17 Oct 2015 04:58:14 +0000 (21:58 -0700)]
i965/fs: Read all components of a SSBO field with one send

Instead of looping through single-component reads, read all components
in one go.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Signed-off-by: Kristian Høgsberg Kristensen <krh@bitplanet.net>
9 years agoi965: Don't use message headers for untyped reads
Kristian Høgsberg Kristensen [Sat, 17 Oct 2015 04:38:05 +0000 (21:38 -0700)]
i965: Don't use message headers for untyped reads

We always set the mask to 0xffff, which is what it defaults to when no
header is present. Let's drop the header instead.

v2: Only remove header for untyped reads. Typed reads always need the
    header.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Signed-off-by: Kristian Høgsberg Kristensen <krh@bitplanet.net>
9 years agoi965/vec4: check opcode on vec4_instruction::reads_flag(channel)
Alejandro Piñeiro [Fri, 23 Oct 2015 13:32:30 +0000 (15:32 +0200)]
i965/vec4: check opcode on vec4_instruction::reads_flag(channel)

Commit f17b78 added an alternative reads_flag(channel) that returned
if the instruction was reading a specific channel flag. By mistake it
only took into account the predicate, but when the opcode is
VS_OPCODE_UNPACK_FLAGS_SIMD4X2 there isn't any predicate, but the flag
are used.

That mistake caused some regressions on old hw. More information on
this bug:
https://bugs.freedesktop.org/show_bug.cgi?id=92621

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
9 years agovc4: Use Rob's NIR-based user clip lowering.
Eric Anholt [Wed, 21 Oct 2015 15:40:46 +0000 (16:40 +0100)]
vc4: Use Rob's NIR-based user clip lowering.

9 years agovc4: Also dump the decimation mode for resolved stores.
Eric Anholt [Mon, 10 Aug 2015 18:28:53 +0000 (11:28 -0700)]
vc4: Also dump the decimation mode for resolved stores.

9 years agovc4: Use VC4_GET_FIELD and other defines in dumping VC4_RENDER_CONFIG.
Eric Anholt [Mon, 10 Aug 2015 18:27:21 +0000 (11:27 -0700)]
vc4: Use VC4_GET_FIELD and other defines in dumping VC4_RENDER_CONFIG.

9 years agovc4: Add a sentinel after simulator buffers for buffer overflow detection.
Eric Anholt [Thu, 22 Oct 2015 10:31:56 +0000 (11:31 +0100)]
vc4: Add a sentinel after simulator buffers for buffer overflow detection.

This is a little bit like the mprotect-based fencing I've experimented
with, but it's simple and low overhead.  The downside is that only catches
writes, not reads.

It didn't catch any bad writes on a current piglit run, but may be useful
in the future.

9 years agoglsl: fix shader storage block member rules when adding program resources
Samuel Iglesias Gonsalvez [Wed, 21 Oct 2015 07:46:48 +0000 (09:46 +0200)]
glsl: fix shader storage block member rules when adding program resources

Commit f24e5e did not take into account arrays of named shader
storage blocks.

Fixes 20 dEQP-GLES31.functional.ssbo.* tests:

dEQP-GLES31.functional.ssbo.layout.single_struct_array.per_block_buffer.shared_instance_array
dEQP-GLES31.functional.ssbo.layout.single_struct_array.per_block_buffer.packed_instance_array
dEQP-GLES31.functional.ssbo.layout.single_struct_array.per_block_buffer.std140_instance_array
dEQP-GLES31.functional.ssbo.layout.single_struct_array.per_block_buffer.std430_instance_array
dEQP-GLES31.functional.ssbo.layout.single_struct_array.single_buffer.shared_instance_array
dEQP-GLES31.functional.ssbo.layout.single_struct_array.single_buffer.packed_instance_array
dEQP-GLES31.functional.ssbo.layout.single_struct_array.single_buffer.std140_instance_array
dEQP-GLES31.functional.ssbo.layout.single_struct_array.single_buffer.std430_instance_array
dEQP-GLES31.functional.ssbo.layout.single_nested_struct_array.per_block_buffer.shared_instance_array
dEQP-GLES31.functional.ssbo.layout.single_nested_struct_array.per_block_buffer.packed_instance_array
dEQP-GLES31.functional.ssbo.layout.single_nested_struct_array.per_block_buffer.std140_instance_array
dEQP-GLES31.functional.ssbo.layout.single_nested_struct_array.per_block_buffer.std430_instance_array
dEQP-GLES31.functional.ssbo.layout.single_nested_struct_array.single_buffer.shared_instance_array
dEQP-GLES31.functional.ssbo.layout.single_nested_struct_array.single_buffer.packed_instance_array
dEQP-GLES31.functional.ssbo.layout.single_nested_struct_array.single_buffer.std140_instance_array
dEQP-GLES31.functional.ssbo.layout.single_nested_struct_array.single_buffer.std430_instance_array
dEQP-GLES31.functional.ssbo.layout.random.all_per_block_buffers.2
dEQP-GLES31.functional.ssbo.layout.random.all_per_block_buffers.29
dEQP-GLES31.functional.ssbo.layout.random.all_per_block_buffers.33
dEQP-GLES31.functional.ssbo.layout.random.all_shared_buffer.3

V2:
- Rename some variables (Timothy)

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
9 years agoilo: add support for scratch spaces
Chia-I Wu [Thu, 22 Oct 2015 16:45:49 +0000 (00:45 +0800)]
ilo: add support for scratch spaces

When a kernel reports a non-zero per-thread scratch space size, make sure the
hardware state is correctly set up, and a scratch bo is allocated.

9 years agoilo: fix scratch space setup in core
Chia-I Wu [Thu, 22 Oct 2015 16:24:26 +0000 (00:24 +0800)]
ilo: fix scratch space setup in core

Move scratch_size out of ilo_state_shader_kernel_info and
ilo_state_compute_interface_info.  A scratch space is shared by all
kernels/interfaces.  Update builder to emit relocs for scratch bos.

9 years agoglsl: remove excess location qualifier validation
Timothy Arceri [Thu, 22 Oct 2015 05:18:44 +0000 (16:18 +1100)]
glsl: remove excess location qualifier validation

Location has never been able to be a negative value because it has
always been validated in the parser.

Also the linker doesn't check for negatives like the comment claims.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
9 years agodocs: update relnotes to mention virgl driver.
Dave Airlie [Fri, 23 Oct 2015 02:11:43 +0000 (12:11 +1000)]
docs: update relnotes to mention virgl driver.

9 years agovirgl/vtest: add vtest driver
Dave Airlie [Fri, 13 Mar 2015 04:15:47 +0000 (14:15 +1000)]
virgl/vtest: add vtest driver

virgl/vtest is a swrast driver that allows the
virgl acceleration to be tested without having
a virtual machine.

The backend has a unix socket server that
this connects to.

This is run by setting
LIBGL_ALWAYS_SOFTWARE=y
GALLIUM_DRIVER=virpipe

In this mode all renderering is sent over
a socket to the remote renderer, and the
results are readback and copies to the screen
using drisw. This works well enough to develop
new features and to help debug.

Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agovirgl: add driver for virtio-gpu 3D (v2)
Dave Airlie [Thu, 22 Jan 2015 05:11:47 +0000 (15:11 +1000)]
virgl: add driver for virtio-gpu 3D (v2)

virgl is the 3D acceleration backend for the
virtio-gpu shipping with qemu.

The 3D acceleration is designed around gallium
and TGSI as the virtualisation layer. The backend
renderer translates the virgl interface into
OpenGL currently.

This is the initial import of the driver to mesa.

The kernel driver portions are lined up for drm-next.

Currently this driver supports up to GL3.3 and some
misc extensions if the host driver exposes it. It is
planned to iterate the virgl API to new GL levels
as mesa host drivers gain features.

v2: fix resource tracking across flushes to avoid
->bind hack in mapping.
consolidate mapping and waiting code for transfers.
use u_range for dirt tracking.
handle larger shaders in protocol.
include virtgpu_drm.h in mesa for now.
add translation layer for gallium tgsi to virgl tgsi.

Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agotgsi: try and handle overflowing shaders. (v2)
Dave Airlie [Thu, 22 Jan 2015 05:18:05 +0000 (15:18 +1000)]
tgsi: try and handle overflowing shaders. (v2)

This is used to detect error in virgl if we overflow the shader
dumping buffers.

v2: return a bool.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agotgsi: add option to dump floats as hex values
Dave Airlie [Mon, 16 Sep 2013 00:13:55 +0000 (10:13 +1000)]
tgsi: add option to dump floats as hex values

This adds support to the parser to accept hex values as floats,
and then adds support to the dumper to allow the user to select
to dump float as 32-bit hex numbers.

This is required to get accurate values for virgl use of TGSI.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agosvga: Condition preemptive flush on draw emission
Sinclair Yeh [Tue, 13 Oct 2015 19:58:26 +0000 (12:58 -0700)]
svga: Condition preemptive flush on draw emission

On ultra high resolution modes, the preemptive flush flag can be
set midway through command submission, a condition that cannot be
recovered from a flush-retry, causing rendering artifacts.

This patch prevents a preemtive_flush until a draw has been
emitted.

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
9 years agosvga: try to avoid index generation for some primitive types
Brian Paul [Fri, 16 Oct 2015 22:14:46 +0000 (16:14 -0600)]
svga: try to avoid index generation for some primitive types

The svga device doesn't directly support quads, quad strips or polygons
so we have to convert those types to indexed triangle lists.  But we
can sometimes avoid that if we're drawing flat/constant-colored prims
and we don't have to worry about provoking vertex.

Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: José Fonseca <jfonseca@vmware.com>
9 years agosvga: avoid provoking vertex conversion when possible
Brian Paul [Fri, 16 Oct 2015 22:12:19 +0000 (16:12 -0600)]
svga: avoid provoking vertex conversion when possible

Provoking vertex comes into play when doing flat shading.  But if we know
that all fragments in a primitive are the same color, the provoking vertex
doesn't matter.  Check for that case and use whichever provoking vertex
convention is supported by the device.

This avoids generating an index buffer to do the PV conversion.

Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: José Fonseca <jfonseca@vmware.com>
9 years agosvga: detect constant color writes in fragment shaders
Brian Paul [Thu, 22 Oct 2015 21:36:25 +0000 (15:36 -0600)]
svga: detect constant color writes in fragment shaders

Examine the fragment shader to try to detect TGSI shaders which use
"MOV OUT[0], CONST[i]" to write a constant value for the fragment color.
In this case, all fragments will have the same color (unless blending is
enabled).

This is a common case for OpenGL code such as: glColor(), glBegin(),
glVertex(), ..., glEnd() when lighting/fog/etc are disabled.  In this
case, the Mesa/gallium state tracker actually generates a simple
"MOV OUT[0], CONST[i]" fragment shader.

This will be used by the next commit to avoid provoking vertex conversion
(creating/rewriting an index buffer) when drawing flat-shaded primitives.

Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: José Fonseca <jfonseca@vmware.com>
9 years agomesa: check for unchanged line width before error checking
Brian Paul [Wed, 21 Oct 2015 19:58:04 +0000 (13:58 -0600)]
mesa: check for unchanged line width before error checking

Reviewed-by: Matt Turner <mattst88@gmail.com>
9 years agost/mesa: use _mesa_RasterPos() when possible
Brian Paul [Wed, 21 Oct 2015 19:42:37 +0000 (13:42 -0600)]
st/mesa: use _mesa_RasterPos() when possible

The st_RasterPos() function goes to great pains to implement the
rasterpos transformation.  It basically uses gallium's draw module to
execute the vertex shader to draw a point, then capture that point's
attributes.

But glRasterPos isn't typically used with a vertex shader so we can
usually use the old/fixed-function implementation which is a lot simpler
and faster.

This can add up for legacy apps that make a lot of calls to glRasterPos.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
9 years agotnl: remove t_rasterpos.c
Brian Paul [Wed, 21 Oct 2015 19:42:21 +0000 (13:42 -0600)]
tnl: remove t_rasterpos.c

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
9 years agodrivers/common: use _mesa_RasterPos instead of _tnl_RasterPos
Brian Paul [Wed, 21 Oct 2015 19:40:58 +0000 (13:40 -0600)]
drivers/common: use _mesa_RasterPos instead of _tnl_RasterPos

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
9 years agomesa: copy rasterpos evaluation code into core Mesa
Brian Paul [Wed, 21 Oct 2015 19:39:15 +0000 (13:39 -0600)]
mesa: copy rasterpos evaluation code into core Mesa

We'll remove it from the tnl module next.  By lifting this code into core
Mesa we can use it from the gallium state tracker.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
9 years agovbo: optimize vertex copying when 'wrapping'
Brian Paul [Wed, 21 Oct 2015 19:38:23 +0000 (13:38 -0600)]
vbo: optimize vertex copying when 'wrapping'

Instead of calling memcpy() 'n' times, we can do it all at once since
the source and dest regions are all contiguous.

Reviewed-by: Matt Turner <mattst88@gmail.com>
9 years agoradeon/uvd: don't expose HEVC on old UVD hw (v3)
Alex Deucher [Thu, 22 Oct 2015 16:24:42 +0000 (12:24 -0400)]
radeon/uvd: don't expose HEVC on old UVD hw (v3)

The section for UVD 2 and older was not updated
when HEVC support was added. Reported by Kano
on irc.

v2: integrate the UVD2 and older checks into the
main switch statement.
v3: handle encode checking as well.  Encode is
already checked in the top case statement, so
drop encode checks in the lower case statement.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: mesa-stable@lists.freedesktop.org
9 years agoi965/vec4: print predicate control at brw_vec4 dump_instruction
Alejandro Piñeiro [Fri, 9 Oct 2015 16:39:42 +0000 (18:39 +0200)]
i965/vec4: print predicate control at brw_vec4 dump_instruction

v2: externalize pred_ctrl_align16 from brw_disasm.c instead of adding
    a copy on brw_vec4.c, as suggested by Matt Turner

Reviewed-by: Matt Turner <mattst88@gmail.com>
9 years agoi965/vec4: use an envvar to decide to print the assembly on cmod_propagation tests
Alejandro Piñeiro [Thu, 1 Oct 2015 14:41:30 +0000 (16:41 +0200)]
i965/vec4: use an envvar to decide to print the assembly on cmod_propagation tests

The complete way to do this would be parse INTEL_DEBUG and
print the output if DEBUG_VS (or a new one) is present
(see intel_debug.c).

But that seems like an overkill for the unit tests, that
after all, the most common use case is being run when
calling make check.

v2: use the same idea for the fs counterpart too, as suggested by
    Matt Turner

Reviewed-by: Matt Turner <mattst88@gmail.com>
9 years agoi965/vec4: Add unit tests for cmod propagation pass
Alejandro Piñeiro [Wed, 30 Sep 2015 11:39:30 +0000 (13:39 +0200)]
i965/vec4: Add unit tests for cmod propagation pass

This include the same tests coming from test_fs_cmod_propagation, (non
vector glsl types included) plus some new with vec4 types, inspired on
the regressions found while the optimization was a work in progress.

Additionally, the check of number of instructions after the
optimization was changed from EXPECT_EQ to ASSERT_EQ. This was done to
avoid a crash on failing tests that expected no optimization, as after
checking the number of instructions, there were some checks related to
this last instruction opcode/conditional mod.

v2: update tests after Matt Turner's review of the optimization pass
v3: tweaks on the tests (mostly on the comments), after Matt Turner's
    review

Reviewed-by: Matt Turner <mattst88@gmail.com>
9 years agoi965/vec4: adding vec4_cmod_propagation optimization
Alejandro Piñeiro [Mon, 28 Sep 2015 15:00:19 +0000 (17:00 +0200)]
i965/vec4: adding vec4_cmod_propagation optimization

vec4 port of fs_cmod_propagation.

Shader-db results (no vec4 grepping):
total instructions in shared programs: 6240413 -> 6235841 (-0.07%)
instructions in affected programs:     401933 -> 397361 (-1.14%)
total loops in shared programs:        1979 -> 1979 (0.00%)
helped:                                2265
HURT:                                  0

v2: remove extra space and combine two if blocks, as suggested by
    Matt Turner
v3: add condition check to bail out if current inst and inst being
    scanned has different writemask, as pointed by Matt Turner
v3: updated shader-db numbers
v4: remove block from foreach_inst_in_block_*_starting_from after
    commit 801f151917fedb13c5c6e96281a18d833dd6901f

Reviewed-by: Matt Turner <mattst88@gmail.com>
9 years agoi965/vec4: track and use independently each flag channel
Alejandro Piñeiro [Wed, 14 Oct 2015 18:26:43 +0000 (20:26 +0200)]
i965/vec4: track and use independently each flag channel

vec4_live_variables tracks now each flag channel independently, so
vec4_dead_code_eliminate can update the writemask of null registers,
based on which component are alive at the moment. This would allow
vec4_cmod_propagation to optimize out several movs involving null
registers.

v2: added support to track each flag channel independently at vec4
    live_variables, as v1 assumed that it was already doing it, as
    pointed by Francisco Jerez
v3: general cleaningn after Matt Turner's review

Reviewed-by: Matt Turner <mattst88@gmail.com>
9 years agoi965/vec4: nir_emit_if doesn't need to predicate based on all the channels
Alejandro Piñeiro [Fri, 9 Oct 2015 14:59:20 +0000 (16:59 +0200)]
i965/vec4: nir_emit_if doesn't need to predicate based on all the channels

v2: changed comment, as suggested by Matt Turner

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
9 years agoi965/vec4/gs: Fix signed/unsigned comparison warning.
Matt Turner [Thu, 22 Oct 2015 19:26:27 +0000 (12:26 -0700)]
i965/vec4/gs: Fix signed/unsigned comparison warning.

9 years agoi965/fs: Emit a single ADD instruction for SET_SAMPLE_ID on Gen8+.
Matt Turner [Wed, 21 Oct 2015 01:31:02 +0000 (18:31 -0700)]
i965/fs: Emit a single ADD instruction for SET_SAMPLE_ID on Gen8+.

Gen8+ lifted the register region restriction that an instruction whose
destination spans two registers must have sources that also span two
registers.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
9 years agoi965/fs: Drop unnecessary write-enable-all from SET_SAMPLE_ID.
Matt Turner [Wed, 21 Oct 2015 01:29:42 +0000 (18:29 -0700)]
i965/fs: Drop unnecessary write-enable-all from SET_SAMPLE_ID.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
9 years agoi965/fs: Trim unneeded channels in SampleID setup.
Matt Turner [Wed, 21 Oct 2015 01:23:50 +0000 (18:23 -0700)]
i965/fs: Trim unneeded channels in SampleID setup.

The AND and SHR produce a scalar value that we had been replicating
across $dispatch_width channels. The immediate MOV produces only four
useful channels of data.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
9 years agoi965/fs: Use type-W for immediate in SampleID setup.
Matt Turner [Wed, 21 Oct 2015 00:51:12 +0000 (17:51 -0700)]
i965/fs: Use type-W for immediate in SampleID setup.

Not a functional difference, but register is loaded with a signed
immediate (V) and added to a signed type (D) producing a signed result
(D).

Also change the type of g0 to allow for compaction.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
9 years agoi965/vec4: Initialize LOD to 0.0f for textureQueryLevels() and texture().
Matt Turner [Mon, 19 Oct 2015 17:51:42 +0000 (10:51 -0700)]
i965/vec4: Initialize LOD to 0.0f for textureQueryLevels() and texture().

We implement textureQueryLevels (which takes no arguments, save the
sampler) using the resinfo message (which takes an argument of LOD).
Without initializing it, we'd generate a MOV from the null register to
load the LOD argument.

Essentially the same logic applies to texture. A vertex shader cannot
compute derivatives and so cannot produce an LOD, so TXL with an LOD of
0.0 is used.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
9 years agoi965: Note that the UV immediate type is Gen6+.
Matt Turner [Mon, 29 Jun 2015 21:04:14 +0000 (14:04 -0700)]
i965: Note that the UV immediate type is Gen6+.

9 years agogallivm: Translate all util_cpu_caps bits to LLVM attributes.
Jose Fonseca [Wed, 21 Oct 2015 16:19:41 +0000 (17:19 +0100)]
gallivm: Translate all util_cpu_caps bits to LLVM attributes.

This should prevent disparity between features Mesa and LLVM
believe are supported by the CPU.

http://lists.freedesktop.org/archives/mesa-dev/2015-October/thread.html#96990

Tested on a i7-3720QM w/ LLVM 3.3 and 3.6.

v2: Increase SmallVector initial size as suggested by Gustaw Smolarczyk.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
CC: "10.6 11.0" <mesa-stable@lists.freedesktop.org>
9 years agoi965/fs: Disable CSE optimization for untyped & typed surface reads
Jordan Justen [Tue, 20 Oct 2015 06:13:09 +0000 (23:13 -0700)]
i965/fs: Disable CSE optimization for untyped & typed surface reads

An untyped surface read is volatile because it might be affected by a
write.

In the ES31-CTS.compute_shader.resources-max test, two back to back
read/modify/writes of an SSBO variable looked something like this:

  r1 = untyped_surface_read(ssbo_float)
  r2 = r1 + 1
  untyped_surface_write(ssbo_float, r2)
  r3 = untyped_surface_read(ssbo_float)
  r4 = r3 + 1
  untyped_surface_write(ssbo_float, r4)

And after CSE, we had:

  r1 = untyped_surface_read(ssbo_float)
  r2 = r1 + 1
  untyped_surface_write(ssbo_float, r2)
  r4 = r1 + 1
  untyped_surface_write(ssbo_float, r4)

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
9 years agoilo: make sure there is HiZ before resolving
Chia-I Wu [Thu, 22 Oct 2015 03:29:17 +0000 (11:29 +0800)]
ilo: make sure there is HiZ before resolving

We do not want to perform a depth resolve on an MCS enabled surface.

9 years agoilo: fix max thread count for HS on Gen8
Chia-I Wu [Thu, 22 Oct 2015 03:19:05 +0000 (11:19 +0800)]
ilo: fix max thread count for HS on Gen8

It is in DW2 on Gen8.

9 years agoi965: Advertise ARB_shader_stencil_export (gen9+)
Ben Widawsky [Tue, 20 Oct 2015 21:29:41 +0000 (14:29 -0700)]
i965: Advertise ARB_shader_stencil_export (gen9+)

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
9 years agoi965: Implement ARB_shader_stencil_export (gen9+)
Ben Widawsky [Tue, 20 Oct 2015 21:29:39 +0000 (14:29 -0700)]
i965: Implement ARB_shader_stencil_export (gen9+)

v2: remove useless source_stencil_to_render_target (Ken)
Squash in the actual packing function, which also got to
  v2:
Move the definition of the OPCODE outside of FB_WRITE opcodes (Matt)
Reorder the regioning to be in VWH order (Matt)
Don't retype src in the backend, just assert instead (Matt)
Rename the debug prints to something better (Matt)

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>