mesa.git
8 years agoswr: [rasterizer core] generalize compute dispatch mechanism
Tim Rowley [Wed, 21 Sep 2016 18:39:44 +0000 (13:39 -0500)]
swr: [rasterizer core] generalize compute dispatch mechanism

Generalize compute dispatch mechanism to support other types of dispatches.

Signed-off-by: Tim Rowley <timothy.o.rowley@intel.com>
8 years agoswr: [rasterizer common] os.h portability header changes
Tim Rowley [Wed, 21 Sep 2016 04:55:24 +0000 (23:55 -0500)]
swr: [rasterizer common] os.h portability header changes

- Fix conflict between windows MemoryFence and llvm::sys::MemoryFence
- Declare gettid()

Signed-off-by: Tim Rowley <timothy.o.rowley@intel.com>
8 years agoanv/formats: Fix build on gcc-4 and earlier
Ville Syrjälä [Fri, 30 Sep 2016 20:00:22 +0000 (23:00 +0300)]
anv/formats: Fix build on gcc-4 and earlier

gcc-4 and earlier don't allow compound literals where a constant
is required in -std=c99/gnu99 mode, so we can't use ISL_SWIZZLE()
when populating the anv_formats[] array. There are a few ways around
it: First one would be -std=c89/gnu89, but the rest of the code
depends on c99 so it's not really an option. The second option
would be to upgrade to gcc-5+ where the compiler behaviour was relaxed
a bit [1]. And the third option is just to avoid using compound
literals. I chose the last option since it keeps gcc-4 and earlier
working.

[1] https://gcc.gnu.org/gcc-5/porting_to.html

Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Topi Pohjolainen <topi.pohjolainen@intel.com>
Fixes: 7ddb21708c80 ("intel/isl: Add an isl_swizzle structure and use it for isl_view swizzles")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
8 years agoegl: stop claiming support for pbuffer + msaa
Tapani Pälli [Mon, 26 Sep 2016 07:03:32 +0000 (10:03 +0300)]
egl: stop claiming support for pbuffer + msaa

This fixes a crash in egl-create-msaa-pbuffer-surface Piglit test
and same crash in many dEQP EGL tests.

I also found that some Qt example did a workaround because of this
crash: https://bugreports.qt.io/browse/QTBUG-47509

v2: Ian pointed out that v1 removed support for all multisample
    configs, including window ones. This one removes pbuffer bit
    when adding configs, now only pbuffer+msaa gets rejected and
    window+msaa continues to work. Fixed also comment (Emil)

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
8 years agoi965: rename max_ds_* variable to max_tes_*
Timothy Arceri [Sun, 2 Oct 2016 23:39:29 +0000 (10:39 +1100)]
i965: rename max_ds_* variable to max_tes_*

Using consistent naming allows us to create macros more easily.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoi965: rename max_hs_* variables to max_tcs_*
Timothy Arceri [Sun, 2 Oct 2016 23:39:28 +0000 (10:39 +1100)]
i965: rename max_hs_* variables to max_tcs_*

Using consistent naming allows us to create macros more easily.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoi965: Drop pointless stage == MESA_SHADER_FRAGMENT checks.
Kenneth Graunke [Fri, 9 Sep 2016 07:12:58 +0000 (00:12 -0700)]
i965: Drop pointless stage == MESA_SHADER_FRAGMENT checks.

There's an assert right above this.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
8 years agoglsl: add missing headers to blob.h
Timothy Arceri [Sat, 1 Oct 2016 01:45:22 +0000 (11:45 +1000)]
glsl: add missing headers to blob.h

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
8 years agonir/spirv/cfg: Detect switch_break after loop_break/continue
Jason Ekstrand [Sat, 17 Sep 2016 05:04:57 +0000 (22:04 -0700)]
nir/spirv/cfg: Detect switch_break after loop_break/continue

While the current CFG code is valid in the case where a switch break also
happens to be a loop continue, it's a bit suboptimal.  Since hardware is
capable of handling the continue as a direct jump, it's better to use a
continue instruction when we can than to bother with all of the nasty
switch break lowering.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>
8 years agonir/spirv/cfg: Handle switches whose break block is a loop continue
Jason Ekstrand [Sat, 17 Sep 2016 04:55:08 +0000 (21:55 -0700)]
nir/spirv/cfg: Handle switches whose break block is a loop continue

It is possible that the break block of a switch is actually the continue of
the loop containing the switch.  In this case, we need to identify the
break block as a continue and break out of current level of CFG handling.
If we don't, the continue portion of the loop will get handled twice, once
by following after the break and a second time by the loop handling code
handling it explicitly.

This fixes 6 of the new Vulkan CTS tests:
 - dEQP-VK.spirv_assembly.instruction.graphics.opphi.out_of_order*
 - dEQP-VK.spirv_assembly.instruction.graphics.selection_block_order.out_of_order*

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>
8 years agonir/spirv: add spirv2nir binary to .gitignore
Eric Engestrom [Sun, 25 Sep 2016 15:49:53 +0000 (16:49 +0100)]
nir/spirv: add spirv2nir binary to .gitignore

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
8 years agonir/spirv: improve mmap() error handling
Eric Engestrom [Sun, 25 Sep 2016 15:49:52 +0000 (16:49 +0100)]
nir/spirv: improve mmap() error handling

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
8 years agonir/spirv: improve lseek() error handling
Eric Engestrom [Sun, 25 Sep 2016 15:49:51 +0000 (16:49 +0100)]
nir/spirv: improve lseek() error handling

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
8 years agonir/spirv: add some error checking to open()
Eric Engestrom [Sun, 25 Sep 2016 15:49:50 +0000 (16:49 +0100)]
nir/spirv: add some error checking to open()

CovID: 1373369
Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
8 years agomesa: use uint32_t rather than unsigned for xfb struct members
Timothy Arceri [Fri, 30 Sep 2016 23:20:26 +0000 (09:20 +1000)]
mesa: use uint32_t rather than unsigned for xfb struct members

These structs will be written to disk as part of the shader cache
so use uint32_t just to be safe.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
8 years agoi915/i965: remove commented out warning
Timothy Arceri [Fri, 30 Sep 2016 06:37:03 +0000 (16:37 +1000)]
i915/i965: remove commented out warning

The warning was also the wrong location, it should have been
in the else.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
8 years agomesa: move _mesa_valid_to_render() to api_validate.c
Brian Paul [Fri, 30 Sep 2016 16:25:05 +0000 (10:25 -0600)]
mesa: move _mesa_valid_to_render() to api_validate.c

Almost all of the other drawing validation code is in api_validate.c
so put this function there as well.

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
8 years agogallium/hud: Add support for CPU frequency monitoring
Steven Toth [Fri, 30 Sep 2016 11:58:00 +0000 (05:58 -0600)]
gallium/hud: Add support for CPU frequency monitoring

Detect all of the CPUs in the system. Expose metrics
for min, max and current frequency in Hz.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
8 years agoRevert "gallium/hud: automatically print % if max_value == 100"
Marek Olšák [Fri, 30 Sep 2016 10:55:08 +0000 (12:55 +0200)]
Revert "gallium/hud: automatically print % if max_value == 100"

This reverts commit dbfeb0ec12d6550e68de1bcd164e422e79bccf2d.

With max_value being rounded to 100, it's often wrong.

Reviewed-by: Brian Paul <brianp@vmware.com>
8 years agodocs: update the list of Mesa major versions and API support
Brian Paul [Fri, 30 Sep 2016 13:18:13 +0000 (07:18 -0600)]
docs: update the list of Mesa major versions and API support

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
8 years agogallium/radeon: fix crash/regression in performance counters
Nicolai Hähnle [Fri, 30 Sep 2016 10:00:44 +0000 (12:00 +0200)]
gallium/radeon: fix crash/regression in performance counters

Regression introduced by "gallium/radeon: zero all query buffers".

Cc: Michel Dänzer <michel@daenzer.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: update documentation of buffer_get_virtual_address
Nicolai Hähnle [Thu, 29 Sep 2016 14:47:27 +0000 (16:47 +0200)]
gallium/radeon: update documentation of buffer_get_virtual_address

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: emit relocations for query fences
Nicolai Hähnle [Fri, 30 Sep 2016 09:46:47 +0000 (11:46 +0200)]
gallium/radeon: emit relocations for query fences

This is only needed for r600 which doesn't have ARB_query_buffer_object and
therefore wouldn't really need the fences, but let's be optimistic about
filling in this feature gap eventually.

Cc: Dieter Nützel <Dieter@nuetzel-hh.de>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agoradeon/uvd: adjust the buffer offset when relocation is used
Nicolai Hähnle [Thu, 29 Sep 2016 14:50:10 +0000 (16:50 +0200)]
radeon/uvd: adjust the buffer offset when relocation is used

We don't plan to use sub-allocated buffers with UVD, but just in case one
slips through, this increases the chances of things working out anyway.

Reviewed-by: Christian König <christian.koenig@amd.com>
8 years agoradeon/vce: adjust the buffer offset when relocation is used
Nicolai Hähnle [Thu, 29 Sep 2016 14:47:53 +0000 (16:47 +0200)]
radeon/vce: adjust the buffer offset when relocation is used

We don't plan to use sub-allocated buffers with VCE, but just in case one
slips through, this increases the chances of things working out anyway.

Reviewed-by: Christian König <christian.koenig@amd.com>
8 years agoradeon/video: don't use sub-allocated buffers
Nicolai Hähnle [Fri, 30 Sep 2016 09:26:13 +0000 (11:26 +0200)]
radeon/video: don't use sub-allocated buffers

Cc: Christian König <christian.koenig@amd.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97976
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97969
Reviewed-by: Christian König <christian.koenig@amd.com>
8 years agogallium/hud: Add power sensor support
Steven Toth [Thu, 29 Sep 2016 14:11:00 +0000 (08:11 -0600)]
gallium/hud: Add power sensor support

Implement support for power based sensors, reporting units in
milli-watts and watts.

Also, minor cleanup - change the related if block to a switch.

Tested with two different power sensors, including the nouveau
'power1' sensors on a GTX950 card.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
8 years agonv50/ir: teach insnCanLoad() about SHLADD
Samuel Pitoiset [Wed, 14 Sep 2016 21:02:38 +0000 (23:02 +0200)]
nv50/ir: teach insnCanLoad() about SHLADD

Commutativity is not allowed with SHLADD, but src2 can accept
loads. To allow the load propagation pass to do its job, add a
special case like for SUCLAMP because src1 is always an immediate.

This IMAD to SHLADD optimization helps a bunch of shaders from Tomb
Raider, Victor Vran, UE4 demos (+15% perf with Elemental) and Shadow
Warrior.

GF100/GK104:

total instructions in shared programs :2838045 -> 2834712 (-0.12%)
total gprs used in shared programs    :396684 -> 396386 (-0.08%)
total local used in shared programs   :34416 -> 34416 (0.00%)

                local        gpr       inst      bytes
    helped           0         326        1105        1105
      hurt           0          55           3           3

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
8 years agonv50/ir: optimize SHLADD(a, b, c) to MOV((a << b) + c)
Samuel Pitoiset [Wed, 14 Sep 2016 20:15:14 +0000 (22:15 +0200)]
nv50/ir: optimize SHLADD(a, b, c) to MOV((a << b) + c)

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
8 years agonv50/ir: optimize SHLADD(a, b, 0x0) to SHL(a, b)
Samuel Pitoiset [Wed, 14 Sep 2016 16:57:02 +0000 (18:57 +0200)]
nv50/ir: optimize SHLADD(a, b, 0x0) to SHL(a, b)

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
8 years agonv50/ir: optimize IMAD to SHLADD in presence of power of 2
Samuel Pitoiset [Wed, 14 Sep 2016 16:49:36 +0000 (18:49 +0200)]
nv50/ir: optimize IMAD to SHLADD in presence of power of 2

Only and only if src1 is a power of 2 we can replace IMAD by SHLADD.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
8 years agonvc0/ir: add emission for SHLADD
Samuel Pitoiset [Wed, 14 Sep 2016 22:18:25 +0000 (00:18 +0200)]
nvc0/ir: add emission for SHLADD

Unfortunately, we can't use the emit helpers for GF100/GK110
because src1 and src2 are swapped.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
8 years agonv50/ir: add preliminary support for SHLADD
Samuel Pitoiset [Wed, 14 Sep 2016 14:42:45 +0000 (16:42 +0200)]
nv50/ir: add preliminary support for SHLADD

This instruction is available since SM20 (Fermi) and allow to do
(a << b) + c in one shot. In some situations, IMAD should be
replaced by SHLADD when b is a power of 2, and ADD+SHL should be
replaced by SHLADD as well.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
8 years agonvc0: update GM107 sched control codes format
Samuel Pitoiset [Tue, 27 Sep 2016 20:08:11 +0000 (22:08 +0200)]
nvc0: update GM107 sched control codes format

envyas now uses a much better representation for those control
codes and it displays the different flags instead of an
unreadable hex number.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
8 years agogallium/radeon: use smaller buffers for query results
Nicolai Hähnle [Tue, 27 Sep 2016 14:52:42 +0000 (16:52 +0200)]
gallium/radeon: use smaller buffers for query results

Most of the time, even the 512 bytes that we now get is more than sufficient
(pipeline stats queries are the largest at 184 bytes per shot).

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon/winsyses: add radeon_winsys::min_alloc_size
Nicolai Hähnle [Tue, 27 Sep 2016 14:51:46 +0000 (16:51 +0200)]
gallium/radeon/winsyses: add radeon_winsys::min_alloc_size

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agoradeonsi: enable ARB_query_buffer_object (v2)
Nicolai Hähnle [Wed, 14 Sep 2016 07:43:42 +0000 (09:43 +0200)]
radeonsi: enable ARB_query_buffer_object (v2)

v2: enable only when compute is available

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: implement get_query_result_resource (v2)
Nicolai Hähnle [Wed, 14 Sep 2016 10:00:50 +0000 (12:00 +0200)]
gallium/radeon: implement get_query_result_resource (v2)

v2: fix a comment (Gustaw Smolarczyk)

Acked-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: zero all query buffers
Nicolai Hähnle [Thu, 15 Sep 2016 13:58:36 +0000 (15:58 +0200)]
gallium/radeon: zero all query buffers

To ensure that fences are properly initialized.

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: cleanup getting PIPE_QUERY_TIMESTAMP result
Nicolai Hähnle [Thu, 15 Sep 2016 10:18:24 +0000 (12:18 +0200)]
gallium/radeon: cleanup getting PIPE_QUERY_TIMESTAMP result

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: add query fences and r600_get_hw_query_params
Nicolai Hähnle [Wed, 14 Sep 2016 08:38:33 +0000 (10:38 +0200)]
gallium/radeon: add query fences and r600_get_hw_query_params

We will support the waiting option in ARB_query_buffer_object using
WAIT_REG_MEM on an appropriate fence-like dword. Some queries conveniently
write their results with the highest bit set, and we can just use that;
for others, we have to write a fence explicitly.

ZPASS_DONE for occlusion queries writes its results with the high bit
set, but it writes up to 8 pairs of results (one for each DB). We have
to wait for all of these results, so let's just add an explicit fence.

The new function provides summary information to be used by subsequent
patches.

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agoradeonsi: add save_qbo_state
Nicolai Hähnle [Wed, 14 Sep 2016 07:46:36 +0000 (09:46 +0200)]
radeonsi: add save_qbo_state

Save compute shader state that will be used for the ARB_query_buffer_object
implementation.

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agoradeonsi: add si_get_shader_buffers/get_pipe_constant_buffers (v2)
Nicolai Hähnle [Wed, 14 Sep 2016 07:45:37 +0000 (09:45 +0200)]
radeonsi: add si_get_shader_buffers/get_pipe_constant_buffers (v2)

These functions extract the pipe state structure from the current
descriptors, for state saving.

v2: correctly dereference *buf (Bas)

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: add r600_gfx_{write,wait}_fence
Nicolai Hähnle [Wed, 14 Sep 2016 13:43:18 +0000 (15:43 +0200)]
gallium/radeon: add r600_gfx_{write,wait}_fence

For bottom-of-pipe fences inside the gfx command stream.

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: add barrier_flags to r600_common_screen
Nicolai Hähnle [Thu, 15 Sep 2016 14:24:17 +0000 (16:24 +0200)]
gallium/radeon: add barrier_flags to r600_common_screen

There are driver-specific context flags for barriers that are not covered
by the Gallium barrier interfaces.

The R600 settings of these flags may not be optimal, but we're not going
to use them yet anyway.

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agoglsl: remove remaining tabs from ast_type.cpp
Timothy Arceri [Wed, 28 Sep 2016 06:04:09 +0000 (16:04 +1000)]
glsl: remove remaining tabs from ast_type.cpp

Acked-by: Dave Airlie <airlied@redhat.com>
8 years agoglsl: remove remaining tabs from ast_to_hir.cpp
Timothy Arceri [Wed, 28 Sep 2016 06:04:08 +0000 (16:04 +1000)]
glsl: remove remaining tabs from ast_to_hir.cpp

Acked-by: Dave Airlie <airlied@redhat.com>
8 years agoglsl: remove remaining tabs from ast_array_index.cpp
Timothy Arceri [Wed, 28 Sep 2016 06:04:07 +0000 (16:04 +1000)]
glsl: remove remaining tabs from ast_array_index.cpp

Acked-by: Dave Airlie <airlied@redhat.com>
8 years agoglsl: remove tabs from ast_expr.cpp
Timothy Arceri [Wed, 28 Sep 2016 06:04:06 +0000 (16:04 +1000)]
glsl: remove tabs from ast_expr.cpp

Acked-by: Dave Airlie <airlied@redhat.com>
8 years agoglsl: remove tabs from linker.{cpp,h}
Timothy Arceri [Wed, 28 Sep 2016 06:04:05 +0000 (16:04 +1000)]
glsl: remove tabs from linker.{cpp,h}

Acked-by: Dave Airlie <airlied@redhat.com>
8 years agogallium/hud: Add support for block I/O, network I/O and lmsensor stats
Steven Toth [Wed, 28 Sep 2016 18:58:00 +0000 (12:58 -0600)]
gallium/hud: Add support for block I/O, network I/O and lmsensor stats

V8: Feedback based on peer review
    convert if block into a switch
    Constify some func args

V7: Increase precision when measuring lmsensors volts
    Flatten patch series.

V6: Feedback based on peer review
    Simplify sensor initialization (arg passing).
    Constify some func args

V5: Feedback based on peer review
    Convert sprintf to snprintf
    Convert char * to const char *
    int arg converted to bool
    Func changes to take a filename vs a larger struct.
    Omit the space between '*' and the param name.

V4: Merged with master as of 2016/9/27 6pm

V3: Flatten the entire patchset ready for the ML

V2: Additional seperate patches based on feedback
a) configure.ac: Add a comment related to libsensors

b) HUD: Disable Block/NIC I/O stats by default.
Implement configuration option --enable-gallium-extra-hud=yes
and enable both statistics when this option is enabled.

c) Configure.ac: Minor cleanup to user visible configuration settings

d) Configure.ac: HUD stats - build system improvements
Move the -lsensors out of a deeper Makefile, bring it into the configure.ac.
Also, rename a compiler directive to more closely follow the standard.

V1: Initial release to the ML
Three new features:
1. Disk/block I/O device read/write stats MB/ps.
2. Network Interface RX/TX transfer statistics as a percentage
   of the overall NIC speed.
3. lmsensor power, voltage and temperature sensors.

The lmsensor changes makes a dependency on libsensors so support
for the change is opt out by default.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
8 years agoi965: Remove useless (harmful) assertion
Ben Widawsky [Tue, 27 Sep 2016 22:02:12 +0000 (15:02 -0700)]
i965: Remove useless (harmful) assertion

The code already skips doing the depth stall on gen >= 8, and as we
enable new platforms this assertion will fail needlessly. Instead of
changing the caller, make this simple change.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
8 years agovc4: Emit perf debug when we fall back to quad clears.
Eric Anholt [Mon, 26 Sep 2016 23:14:51 +0000 (16:14 -0700)]
vc4: Emit perf debug when we fall back to quad clears.

8 years agonir: Optimize out discard_ifs with a constant 0 argument.
Eric Anholt [Wed, 16 Mar 2016 01:32:19 +0000 (18:32 -0700)]
nir: Optimize out discard_ifs with a constant 0 argument.

I found this in a shader that was doing an alpha test when alpha is fixed
at 1.0.

v2: Rebase on master (now the const value is "u32" not "u").

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> (v1)
8 years agogallium/radeon: Initialize pipe_resource::next to NULL
Michel Dänzer [Tue, 27 Sep 2016 09:17:12 +0000 (18:17 +0900)]
gallium/radeon: Initialize pipe_resource::next to NULL

Fixes lots of piglit tests crashing due to using uninitialized memory.

Fixes: ecd6fce2611e ("mesa/st: support lowering multi-planar YUV")
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agoglsl: don't crash when dumping shaders if some come from cache
Timothy Arceri [Sun, 27 Mar 2016 05:25:12 +0000 (16:25 +1100)]
glsl: don't crash when dumping shaders if some come from cache

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoglsl: Add initial functions to implement an on-disk cache
Timothy Arceri [Tue, 27 Sep 2016 22:55:02 +0000 (08:55 +1000)]
glsl: Add initial functions to implement an on-disk cache

This code provides for an on-disk cache of objects. Objects are stored
and retrieved via names that are arbitrary 20-byte sequences,
(intended to be SHA-1 hashes of something identifying for the
content). The directory used for the cache can be specified by means
of environment variables in the following priority order:

$MESA_GLSL_CACHE_DIR
$XDG_CACHE_HOME/mesa
<user-home-directory>/.cache/mesa

By default the cache will be limited to a maximum size of 1GB. The
environment variable:

$MESA_GLSL_CACHE_MAX_SIZE

can be set (at the time of GL context creation) to choose some other
size. This variable is a number that can optionally be followed by
'K', 'M', or 'G' to select a size in kilobytes, megabytes, or
gigabytes. By default, an unadorned value will be interpreted as
gigabytes.

The cache will be entirely disabled at runtime if the variable
MESA_GLSL_CACHE_DISABLE is set at the time of GL context creation.

Many thanks to Kristian Høgsberg <krh@bitplanet.net> for the initial
implementation of code that led to this patch. In particular, the idea
of using an mmapped file, (indexed by a portion of the SHA-1), for the
efficent implementation of cache_has_key was entirely his
idea. Kristian also provided some very helpful advice in discussions
regarding various race conditions to be avoided in this code.

Signed-off-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
8 years ago.gitignore: Ignore src/compiler/spirv2nir
Chad Versace [Tue, 27 Sep 2016 20:22:44 +0000 (13:22 -0700)]
.gitignore: Ignore src/compiler/spirv2nir

8 years agoglsl: Fix cut-and-paste bug in hierarchical visitor ir_expression::accept
Ian Romanick [Thu, 15 Sep 2016 18:11:12 +0000 (11:11 -0700)]
glsl: Fix cut-and-paste bug in hierarchical visitor ir_expression::accept

At this point in the code, s must be visit_continue.  If the child
returned visit_stop, visit_stop is the only correct thing to return.

Found by inspection.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoglsl: Add bit_xor builder
Ian Romanick [Wed, 7 Sep 2016 06:17:51 +0000 (23:17 -0700)]
glsl: Add bit_xor builder

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoglsl/standalone: Enable GLSL 4.00 through 4.50
Ian Romanick [Thu, 15 Sep 2016 18:16:02 +0000 (11:16 -0700)]
glsl/standalone: Enable GLSL 4.00 through 4.50

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoglsl/standalone: Use API_OPENGL_CORE if the GLSL version is >= 1.40
Ian Romanick [Wed, 14 Sep 2016 20:51:19 +0000 (13:51 -0700)]
glsl/standalone: Use API_OPENGL_CORE if the GLSL version is >= 1.40

Otherwise extensions to 1.40 that are only for core profile won't work.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoglsl: Update function parameter documentation for do_common_optimization
Ian Romanick [Wed, 14 Sep 2016 22:14:22 +0000 (15:14 -0700)]
glsl: Update function parameter documentation for do_common_optimization

max_unroll_iterations was moved into options a long, long time ago.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoconfigure.ac: add llvm inteljitevents component if enabled
Tim Rowley [Thu, 21 Jul 2016 23:34:37 +0000 (18:34 -0500)]
configure.ac: add llvm inteljitevents component if enabled

Needed to successfully link llvmpipe or swr when using shared llvm libs
built with inteljitevents enabled.

v2: Make adding inteljitevents component global rather than just
llvmpipe/swr, since libgallium will have a symbol dependency.

Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
8 years agoswr: replace gallium->swr format enum conversion
Tim Rowley [Tue, 20 Sep 2016 16:15:55 +0000 (11:15 -0500)]
swr: replace gallium->swr format enum conversion

Replace old string comparison with a mapping table.

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>
8 years agogallium/radeon/winsyses: reduce the number of pb_cache buckets
Nicolai Hähnle [Mon, 12 Sep 2016 14:27:41 +0000 (16:27 +0200)]
gallium/radeon/winsyses: reduce the number of pb_cache buckets

Small buffers are now handled via the slabs code, so separate buckets in
pb_cache have become redundant.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agowinsys/radeon: enable buffer allocation from slabs
Nicolai Hähnle [Mon, 12 Sep 2016 10:19:47 +0000 (12:19 +0200)]
winsys/radeon: enable buffer allocation from slabs

Only enable for chips with GPUVM, because older driver paths do not take the
required offset into account.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agowinsys/radeon: add fine-grained fences for slab buffers
Nicolai Hähnle [Mon, 12 Sep 2016 09:46:12 +0000 (11:46 +0200)]
winsys/radeon: add fine-grained fences for slab buffers

Note the logic for adding fences is somewhat different than for amdgpu,
because radeon has no scheduler and we therefore have no guarantee about
the order in which submissions from multiple threads are processed.

(Ironically, this is only an issue when "multi-threaded submission" is
disabled, because "multi-threaded submission" actually means that all
submissions happen from a single thread that happens to be separate from
the application's threads. If we only supported "multi-threaded
submission", the fence handling could be simplified by adding the fences
in that thread where everything is serialized.)

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agowinsys/radeon: add slab buffer list
Nicolai Hähnle [Mon, 12 Sep 2016 08:52:35 +0000 (10:52 +0200)]
winsys/radeon: add slab buffer list

Introducing radeon_bo::hash will reduce collisions between "real" buffers
and buffers from slabs.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agowinsys/radeon: separate adding a buffer from updating its reloc data
Nicolai Hähnle [Fri, 9 Sep 2016 16:30:40 +0000 (18:30 +0200)]
winsys/radeon: separate adding a buffer from updating its reloc data

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agowinsys/radeon: add slab entry structures to radeon_bo
Nicolai Hähnle [Fri, 9 Sep 2016 13:21:03 +0000 (15:21 +0200)]
winsys/radeon: add slab entry structures to radeon_bo

Already adjust the map/unmap logic accordingly.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agowinsys/amdgpu: enable buffer allocation from slabs
Nicolai Hähnle [Wed, 7 Sep 2016 08:50:59 +0000 (10:50 +0200)]
winsys/amdgpu: enable buffer allocation from slabs

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agowinsys/amdgpu: add fence and buffer list logic for slab allocated buffers
Nicolai Hähnle [Thu, 8 Sep 2016 08:05:55 +0000 (10:05 +0200)]
winsys/amdgpu: add fence and buffer list logic for slab allocated buffers

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agowinsys/amdgpu: add slab entry structures to amdgpu_winsys_bo
Nicolai Hähnle [Wed, 7 Sep 2016 08:37:42 +0000 (10:37 +0200)]
winsys/amdgpu: add slab entry structures to amdgpu_winsys_bo

Already adjust amdgpu_bo_map/unmap accordingly.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agowinsys/amdgpu: do not synchronize unsynchronized buffers
Nicolai Hähnle [Wed, 7 Sep 2016 09:01:17 +0000 (11:01 +0200)]
winsys/amdgpu: do not synchronize unsynchronized buffers

When a buffer is added to a CS without the SYNCHRONIZED usage flag, we now
no longer add a dependency on the buffer's fence(s).

However, we still need to add a fence to the buffer during flush, so that
cache reclaim works correctly (and in the hypothetical case that the buffer
is later added to a CS _with_ the SYNCHRONIZED flag).

It is now possible that the submissions refererring to a buffer are no longer
linearly ordered, and so we may have to keep multiple fences around. We keep
the fences in a FIFO. It should usually stay quite short (# of contexts * 2,
for gfx + dma rings).

While we're at it, extract amdgpu_add_fence_dependency for a single buffer,
which will make adding the distinction between real buffer and slab cases
easier.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: add RADEON_FLAG_HANDLE
Nicolai Hähnle [Fri, 9 Sep 2016 09:49:18 +0000 (11:49 +0200)]
gallium/radeon: add RADEON_FLAG_HANDLE

When passed to winsys->buffer_create, this flag will indicate that we require
a buffer that maps 1:1 with a kernel buffer handle.

This is currently set for all textures, since textures can potentially be
exported to other processes. This is not a huge loss, since the main purpose
of this patch series is to deal with applications that allocate many small
buffers.

A hypothetical application with tons of tiny textures might still benefit
from not setting this flag, but that's not a use case I'm worried about
just now.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/radeon: add RADEON_USAGE_SYNCHRONIZED
Nicolai Hähnle [Wed, 7 Sep 2016 08:57:56 +0000 (10:57 +0200)]
gallium/radeon: add RADEON_USAGE_SYNCHRONIZED

This is really the behavior we want most of the time, but having a
SYNCHRONIZED flag instead of an UNSYNCHRONIZED one has the advantage that
OR'ing different flags together always results in stronger guarantees.

The parent BOs of sub-allocated buffers will be added unsynchronized.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/pipebuffer: add pb_slab utility
Nicolai Hähnle [Tue, 6 Sep 2016 12:43:00 +0000 (14:43 +0200)]
gallium/pipebuffer: add pb_slab utility

This is a simple framework for slab allocation from buffers that fits into
the buffer management scheme of the radeon and amdgpu winsyses where bufmgrs
aren't used.

The utility knows about different sized allocations and explicitly manages
reclaim of allocations that have pending fences. It manages all the free lists
but does not actually touch buffer objects directly, relying on callbacks for
that.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agogallium/u_math: add util_logbase2_ceil
Nicolai Hähnle [Tue, 6 Sep 2016 12:41:51 +0000 (14:41 +0200)]
gallium/u_math: add util_logbase2_ceil

For finding the exponent of the next power of two.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
8 years agoi915g: add dma-buf support to i915_drm_buffer_get_handle
Nicholas Bishop [Thu, 8 Sep 2016 19:55:03 +0000 (15:55 -0400)]
i915g: add dma-buf support to i915_drm_buffer_get_handle

The implementation of i915_drm_buffer_get_handle now handles
DRM_API_HANDLE_TYPE_FD in the same way that intel_winsys_import_handle
does, by calling drm_intel_bo_gem_create_from_prime.

Tested by successfully running Chrome's ozone_demo [1] with the
ozone-gbm backend on an Intel Pineview M machine. Without this change
it fails while trying to create a DMA-BUF.

[1] https://chromium.googlesource.com/chromium/src.git/+/master/ui/ozone/demo/ozone_demo.cc

Signed-off-by: Nicholas Bishop <nbishop@neverware.com>
[Emil Velikov: Fix coding style]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
8 years agost/dri: check pipe_screen->resource_get_handle() return value
Nicholas Bishop [Thu, 22 Sep 2016 15:04:13 +0000 (16:04 +0100)]
st/dri: check pipe_screen->resource_get_handle() return value

Change dri2_query_image to check the return value of resource_get_handle
and return GL_FALSE if an error occurs.

For reference this is an example callstack that should propagate the
error back to the user:

    i915_drm_buffer_get_handle
    i915_texture_get_handle
    u_resource_get_handle_vtbl
    dri2_query_image
    gbm_dri_bo_get_fd
    gbm_bo_get_fd

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Nicholas Bishop <nbishop@neverware.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> (v1)
[Emil Velikov: Split from larger patch, polish coding style, cc stable]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
8 years agogbm: return appropriate error when queryImage() fails
Nicholas Bishop [Thu, 8 Sep 2016 19:55:02 +0000 (15:55 -0400)]
gbm: return appropriate error when queryImage() fails

Change gbm_dri_bo_get_fd to check the return value of queryImage and
return -1 (an invalid file descriptor) if an error occurs.

Update the comment for gbm_bo_get_fd to return -1, since (apart from the
above) we've already return -1 on error.

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Nicholas Bishop <nbishop@neverware.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> (v1)
[Emil Velikov: Split from larger patch, polish coding style, cc stable]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
8 years agost/va Avoid VBR bitrate calculation overflow v2
Andy Furniss [Mon, 26 Sep 2016 09:44:35 +0000 (10:44 +0100)]
st/va Avoid VBR bitrate calculation overflow v2

VBR bitrate calc needs 64 bits at high rates.

v2: use float.

Signed-off-by: Andy Furniss <adf.lists@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: mesa-stable@lists.freedesktop.org
8 years agost/va: Fix vaSyncSurface with no outstanding operation
Mark Thompson [Mon, 26 Sep 2016 22:22:31 +0000 (23:22 +0100)]
st/va: Fix vaSyncSurface with no outstanding operation

Fixes crash if the application doesn't do what the state tracker expects.

Reviewed-by: Christian König <christian.koenig@amd.com>
8 years agoglsl: remove remaining tabs in glsl_parser_extras.h
Timothy Arceri [Tue, 27 Sep 2016 02:00:51 +0000 (12:00 +1000)]
glsl: remove remaining tabs in glsl_parser_extras.h

Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
8 years agost/mesa: enable ARB_ES3_2_compatibility when enough available
Ilia Mirkin [Mon, 29 Aug 2016 00:03:24 +0000 (20:03 -0400)]
st/mesa: enable ARB_ES3_2_compatibility when enough available

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Acked-by: Marek Olšák <marek.olsak@amd.com>
8 years agost/mesa: enable GL_ANDROID_extension_pack_es31a when available
Ilia Mirkin [Sun, 28 Aug 2016 19:55:44 +0000 (15:55 -0400)]
st/mesa: enable GL_ANDROID_extension_pack_es31a when available

For now that's never since advanced blend hasn't been piped through.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Acked-by: Marek Olšák <marek.olsak@amd.com>
8 years agoglsl: move some uniform linking code to new link_assign_uniform_storage()
Timothy Arceri [Sun, 25 Sep 2016 12:50:25 +0000 (22:50 +1000)]
glsl: move some uniform linking code to new link_assign_uniform_storage()

This makes link_assign_uniform_locations() easier to follow.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoglsl: move some uniform linking code to new link_setup_uniform_remap_tables()
Timothy Arceri [Sun, 25 Sep 2016 12:50:24 +0000 (22:50 +1000)]
glsl: move some uniform linking code to new link_setup_uniform_remap_tables()

This makes link_assign_uniform_locations() easier to follow.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoi965: create populate key functions for tcs and tes
Timothy Arceri [Sat, 18 Jun 2016 06:18:17 +0000 (16:18 +1000)]
i965: create populate key functions for tcs and tes

These will be used by the on disk shader cache.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoi965: make gs key generation helper available to shader cache
Timothy Arceri [Fri, 17 Jun 2016 12:02:43 +0000 (22:02 +1000)]
i965: make gs key generation helper available to shader cache

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoglsl: use reproducible name for lowered const arrays
Timothy Arceri [Thu, 14 Apr 2016 06:48:39 +0000 (16:48 +1000)]
glsl: use reproducible name for lowered const arrays

Otherwise we can end up with mismatching names between the cached
binary and the cached metadata.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agoi965: make vs and fs key generation helpers available to shader cache
Carl Worth [Thu, 14 Apr 2016 00:54:38 +0000 (10:54 +1000)]
i965: make vs and fs key generation helpers available to shader cache

Signed-off-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
8 years agoglsl: Prepare standalone compiler to be able to use parameter lists
Carl Worth [Thu, 12 Mar 2015 00:31:11 +0000 (17:31 -0700)]
glsl: Prepare standalone compiler to be able to use parameter lists

As part of the shader-cache work an upcoming change will add new
references to _mesa_add_parameter and _mesa_new_parameter_list from
the glsl code. To prepare for that, and to allow the standalone
glsl_compiler to still link, here we add mesa/program/prog_parameter.c
to the libglsl_util sources.

Then, in order to get *that* to work, we also add to stubs to
standalone_scaffolding:

_mesa_program_state_flags
_mesa_program_state_string

These functions aren't actually used by the two functions in
prog_parameter.c that we are actually calling. They are used in other
functions in the same file. So we don't care what the implementation
of these stubs is, (they won't be called by glsl_compiler). We just
need the stubs present so that it can link.

Signed-off-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
8 years agonv50/ir: fix comments about instructions info
Samuel Pitoiset [Mon, 26 Sep 2016 19:50:26 +0000 (21:50 +0200)]
nv50/ir: fix comments about instructions info

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Acked-by: Ilia Mirkin <imirkin@alum.mit.edu>
8 years agomesa/st: support lowering multi-planar YUV
Rob Clark [Wed, 31 Aug 2016 21:44:01 +0000 (17:44 -0400)]
mesa/st: support lowering multi-planar YUV

Support multi-planar YUV for external EGLImage's (currently just in the
dma-buf import path) by lowering to multiple texture fetch's for each
plane and CSC in shader.

There was some discussion of alternative approaches for tracking the
additional UV or U/V planes:

  https://lists.freedesktop.org/archives/mesa-dev/2016-September/127832.html

They all seemed worse than pipe_resource::next

Signed-off-by: Rob Clark <robdclark@gmail.com>
8 years agomesa/st: add nir pass to lower tex_src_plane
Rob Clark [Thu, 8 Sep 2016 18:57:25 +0000 (14:57 -0400)]
mesa/st: add nir pass to lower tex_src_plane

Signed-off-by: Rob Clark <robdclark@gmail.com>
8 years agomesa/st: add lowering pass for YUV samplers
Rob Clark [Fri, 2 Sep 2016 14:42:22 +0000 (10:42 -0400)]
mesa/st: add lowering pass for YUV samplers

Signed-off-by: Rob Clark <robdclark@gmail.com>
8 years agoaubinator: Fix the decoding of values that span two Dwords
Sirisha Gandikota [Tue, 20 Sep 2016 22:59:28 +0000 (15:59 -0700)]
aubinator: Fix the decoding of values that span two Dwords

Fixed the way the values that span two Dwords are decoded.
Based on the start and end indices of the field, the Dwords
are fetched and decoded accordingly.

v2: rename dw to qw in gen_field_iterator_next
and remove extra white space (Anuj)

v3: change all instances of dw to qw (Anuj)

Earlier, 64-bit fields (such as most pointers on Gen8+)
weren't decoded correctly.  gen_field_iterator_next seemed
to walk one DWord at a time, sets v.dw, and then passes it
to field(). So, even though field() takes a uint64_t, we're
passing it a uint32_t (which gets promoted, so the top 32
bits will always be zero). This seems pretty bogus... (Ken)

Signed-off-by: Sirisha Gandikota <Sirisha.Gandikota@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
8 years agonvc0: allow to force compiling programs in debug build
Samuel Pitoiset [Wed, 14 Sep 2016 18:37:12 +0000 (20:37 +0200)]
nvc0: allow to force compiling programs in debug build

This adds a new envvar called NV50_PROG_CHIPSET which allows to
compile shaders with a different target, especially useful for
shader-db.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>