platform/upstream/mesa.git
7 years agovc4: Re-add R4 to the "any" register class.
Eric Anholt [Tue, 22 Nov 2016 07:29:04 +0000 (23:29 -0800)]
vc4: Re-add R4 to the "any" register class.

I screwed this up in fdad4d24024ab7bc9b6b9cb6288f8b76ccac0d89 which was
supposed to be making this code more maintainable.  What's amazing is
multithreaded FS showed the wins it did despite this bug.

shader-db results:
total instructions in shared programs: 103535 -> 100548 (-2.89%)
instructions in affected programs:     83794 -> 80807 (-3.56%)

7 years agovc4: Disable MSAA rasterization when the job binning is single-sampled.
Eric Anholt [Tue, 22 Nov 2016 21:51:03 +0000 (13:51 -0800)]
vc4: Disable MSAA rasterization when the job binning is single-sampled.

Gallium core just changed to start setting MSAA enabled in the rasterizer
state even with samples==1 buffers.  This caused disagreements in our
driver between binning and rasterization state, which the simulator threw
assertion failures about.  Keep the single-sampled samples==1 behavior for
now.

7 years agovc4: Make sure we don't overflow texture input/output FIFOs when threaded.
Eric Anholt [Tue, 22 Nov 2016 21:31:46 +0000 (13:31 -0800)]
vc4: Make sure we don't overflow texture input/output FIFOs when threaded.

I dropped the first hunk of this change last minute when I decided it
wasn't actually needed, and apparently failed to piglit it in simulation.
The simulator threw an an assertion in gl-1.0-drawpixels-color-index,
which queued up 5 coordinates (3 before a switch, two after) before
loading the result.

7 years agoradv: move pipeline barrier image transitions after src flushing
Dave Airlie [Tue, 25 Oct 2016 06:23:48 +0000 (07:23 +0100)]
radv: move pipeline barrier image transitions after src flushing

This seems like it would conform better with the spec.

noticed while digging into fast clears.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>
7 years agoanv: Enable fast clears on gen7-8
Jason Ekstrand [Sat, 19 Nov 2016 16:47:25 +0000 (08:47 -0800)]
anv: Enable fast clears on gen7-8

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv: Add support for fast clears on gen9
Jason Ekstrand [Fri, 18 Nov 2016 06:55:30 +0000 (22:55 -0800)]
anv: Add support for fast clears on gen9

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv/blorp: Rework flushing around resolves
Jason Ekstrand [Sat, 19 Nov 2016 16:25:28 +0000 (08:25 -0800)]
anv/blorp: Rework flushing around resolves

It turns out that the flushing required around resolves is a bit more
extensive than I first thought.  You actually need render cache flush
and a CS stall both before *and* after the resolve.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv/cmd_buffer: Apply remaining flushes in EndCommandBuffer
Jason Ekstrand [Sat, 19 Nov 2016 01:39:26 +0000 (17:39 -0800)]
anv/cmd_buffer: Apply remaining flushes in EndCommandBuffer

Otherwise, some pipe flushes may just never happen.  This is unlikely to
cause problems depending on how the kernel schedules batches, but we
shouldn't count on it.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv/blorp: Use regular blorp clears for subpass clears
Jason Ekstrand [Fri, 18 Nov 2016 21:35:42 +0000 (13:35 -0800)]
anv/blorp: Use regular blorp clears for subpass clears

At vkCmdNextSubpass time, we have the actual framebuffer so we can use
regular blorp_clear for subpass clears.  For fast clears, there is no
attachment version, so this will make fast clears a bit easier.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv: Add a vk_to_isl_color helper
Jason Ekstrand [Fri, 18 Nov 2016 21:35:16 +0000 (13:35 -0800)]
anv: Add a vk_to_isl_color helper

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv/cmd_buffer: Make setup_attachments take a RenderPassBeginInfo
Jason Ekstrand [Fri, 18 Nov 2016 06:26:52 +0000 (22:26 -0800)]
anv/cmd_buffer: Make setup_attachments take a RenderPassBeginInfo

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv: Set up binding tables and surface states for input attachments
Jason Ekstrand [Tue, 15 Nov 2016 23:25:55 +0000 (15:25 -0800)]
anv: Set up binding tables and surface states for input attachments

This commit adds the last remaining bits to support input attachments in
the Intel Vulkan driver.  For color and depth attachments, we allocate an
input attachment surface state during vkCmdBeginRenderPass like we do for
the render target surface states.  This is so that we can incorporate the
clear color and aux information as used in rendering.  For stencil, we just
treat it like a regular texture because we don't there is no aux.  Also,
only having to worry about at most one input attachment surface for each
attachment makes some of the vkCmdBeginRenderPass code simpler.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv/pipeline: Handle depth/stencil self-dependencies
Jason Ekstrand [Wed, 16 Nov 2016 18:39:15 +0000 (10:39 -0800)]
anv/pipeline: Handle depth/stencil self-dependencies

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv: Use pass attachment information to insert flushes
Jason Ekstrand [Wed, 16 Nov 2016 07:11:55 +0000 (23:11 -0800)]
anv: Use pass attachment information to insert flushes

Input and resolve attachments can cause an implicit dependency in the
pipeline.  It's our job to insert the needed flushes.  Fortunately, we can
easily reuse the usage tracking that we use for CCS resolves.

This fixes 159 Vulkan CTS tests on Haswell because we're now flushing in
between drawing and MSAA resolves.  I have no idea how they were passing
before on newer hardware.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv/cmd_buffer: Fix pipeline barriers for input attachments
Jason Ekstrand [Wed, 16 Nov 2016 19:20:50 +0000 (11:20 -0800)]
anv/cmd_buffer: Fix pipeline barriers for input attachments

We were using VK_IMAGE_ACCESS_COLOR_ATTACHMENT_READ_BIT to detect an input
attachment read.  We should use VK_IMAGE_ACCESS_INPUT_ATTACHMENT_READ_BIT
instead.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv/pipeline: Add a input_attachment_index to the bindings
Jason Ekstrand [Tue, 15 Nov 2016 23:21:08 +0000 (15:21 -0800)]
anv/pipeline: Add a input_attachment_index to the bindings

This allows us to go from the binding to either the descriptor or the input
attachment at will.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv/pass: Calculate the combined image usage of attachments
Jason Ekstrand [Tue, 15 Nov 2016 01:18:47 +0000 (17:18 -0800)]
anv/pass: Calculate the combined image usage of attachments

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv: Add an input attachment lowering pass
Jason Ekstrand [Mon, 14 Nov 2016 22:23:36 +0000 (14:23 -0800)]
anv: Add an input attachment lowering pass

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoi965/fs: Implement load_layer_id for fragment shaders
Jason Ekstrand [Tue, 15 Nov 2016 23:18:32 +0000 (15:18 -0800)]
i965/fs: Implement load_layer_id for fragment shaders

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agonir: Add a layer_id system value intrinsic
Jason Ekstrand [Tue, 15 Nov 2016 23:15:48 +0000 (15:15 -0800)]
nir: Add a layer_id system value intrinsic

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agospirv: Stop warning about input attachments
Jason Ekstrand [Wed, 16 Nov 2016 00:55:54 +0000 (16:55 -0800)]
spirv: Stop warning about input attachments

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agospirv: Handle the InputAttachmentIndex decoration
Jason Ekstrand [Mon, 14 Nov 2016 22:22:56 +0000 (14:22 -0800)]
spirv: Handle the InputAttachmentIndex decoration

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agocompiler: Add the rest of the subpassInput types
Jason Ekstrand [Tue, 15 Nov 2016 02:11:07 +0000 (18:11 -0800)]
compiler: Add the rest of the subpassInput types

There are actually 6 of them according to the GL_KHR_vulkan_glsl spec.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
7 years agoanv/cmd_buffer: Emit CS push constants after binding tables
Jason Ekstrand [Tue, 22 Nov 2016 17:35:01 +0000 (09:35 -0800)]
anv/cmd_buffer: Emit CS push constants after binding tables

Emitting binding tables can cause push constants to be dirtied if the
shader uses images so we need to handle push constants later.

7 years agogallium: fix more occurences of u_hash.h
Marek Olšák [Tue, 22 Nov 2016 17:28:18 +0000 (18:28 +0100)]
gallium: fix more occurences of u_hash.h

this fixes compile failures since 86514d84e0beec47c82da4888db12bf07f33cb83

7 years agomesa: use special checksums for unset checksums and fixed-func shaders
Marek Olšák [Fri, 18 Nov 2016 20:00:27 +0000 (21:00 +0100)]
mesa: use special checksums for unset checksums and fixed-func shaders

for debugging

Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
7 years agoglsl: add gl_linked_shader::SourceChecksum
Marek Olšák [Fri, 18 Nov 2016 18:49:55 +0000 (19:49 +0100)]
glsl: add gl_linked_shader::SourceChecksum

for debugging

v2: wrap all checksums in #ifdef DEBUG

Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
7 years agomesa: use util_hash_crc32 instead of _mesa_str_checksum
Marek Olšák [Fri, 18 Nov 2016 18:23:55 +0000 (19:23 +0100)]
mesa: use util_hash_crc32 instead of _mesa_str_checksum

Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
7 years agoutil: import CRC32 implementation from gallium
Marek Olšák [Fri, 18 Nov 2016 18:20:54 +0000 (19:20 +0100)]
util: import CRC32 implementation from gallium

Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
7 years agoanv/cmd_buffer: Add an assert on emit_binding_table failure
Jason Ekstrand [Tue, 22 Nov 2016 16:11:45 +0000 (08:11 -0800)]
anv/cmd_buffer: Add an assert on emit_binding_table failure

The != VK_SUCCESS case is really only capable of handling the one error.
This assert makes things a bit safer if something else goes wrong.

Suggested-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
7 years agogbm: request correct version of the DRI2_FENCE extension
Lucas Stach [Tue, 22 Nov 2016 10:12:35 +0000 (11:12 +0100)]
gbm: request correct version of the DRI2_FENCE extension

There is no version 2 of the DRI2_FENCE extension. So only a request
for version 1 has a chance to succeed.

Fixes: 74b1969d717f (gbm: wire up fence extension)
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
7 years agoanv/cmd_buffer: Emit a CS stall before setting a CS pipeline
Jason Ekstrand [Tue, 22 Nov 2016 04:22:53 +0000 (20:22 -0800)]
anv/cmd_buffer: Emit a CS stall before setting a CS pipeline

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
7 years agoanv/cmd_buffer: Re-emit MEDIA_CURBE_LOAD when CS push constants are dirty
Jason Ekstrand [Tue, 22 Nov 2016 04:21:24 +0000 (20:21 -0800)]
anv/cmd_buffer: Re-emit MEDIA_CURBE_LOAD when CS push constants are dirty

This can happen even if the binding table isn't changed.  For instance, you
could have dynamic offsets with your descriptor set.  This fixes the new
stress.lots-of-surface-state.cs.dynamic cricible test.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
7 years agoanv/cmd_buffer: Handle running out of binding tables in compute shaders
Jason Ekstrand [Tue, 22 Nov 2016 04:17:24 +0000 (20:17 -0800)]
anv/cmd_buffer: Handle running out of binding tables in compute shaders

If we try to allocate a binding table and fail, we have to get a new
binding table block, re-emit STATE_BASE_ADDRESS, and then try again.  We
already handle this correctly for 3D and blorp but it never got handled for
CS.  This fixes the new stress.lots-of-surface-state.cs.static crucible test.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
7 years agoi965/compiler: Disable trig workarounds on KBL+
Jason Ekstrand [Tue, 8 Nov 2016 21:21:39 +0000 (13:21 -0800)]
i965/compiler: Disable trig workarounds on KBL+

The precision of our trig instructions appears to have been fixed on Kaby
Lake.  Neither Ben nor I can find any documentation for this.  However, the
dEQP precision tests now pass with INTEL_PRECISE_TRIG=0 where they fail on
Sky Lake.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
7 years agointel/common: Add an is_kabylake field to gen_device_info
Jason Ekstrand [Tue, 8 Nov 2016 21:21:38 +0000 (13:21 -0800)]
intel/common: Add an is_kabylake field to gen_device_info

Most of the 3-D engine Kaby Lake is identical to Sky Lake.  However, there
are a few small differences that we need to be able to detect.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
7 years agoanv: Fix unintentional integer overflow in anv_CreateDmaBufImageINTEL
Gwan-gyeong Mun [Sun, 20 Nov 2016 11:44:22 +0000 (20:44 +0900)]
anv: Fix unintentional integer overflow in anv_CreateDmaBufImageINTEL

Since both pCreateInfo->strideInBytes and pCreateInfo->extent.height
are of uint32_t type 32-bit arithmetic will be used.

Fix unintentional integer overflow by casting to uint64_t before
multifying.

CID 1394321

Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Mun Gwan-gyeong <elongbug@gmail.com>
[Emil Velikov: cast only of the arguments]
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
7 years agoutil/disk_cache: close a previously opened handle in disk_cache_put (v2)
Gwan-gyeong Mun [Mon, 21 Nov 2016 15:21:23 +0000 (00:21 +0900)]
util/disk_cache: close a previously opened handle in disk_cache_put (v2)

We're missing the close() to the matching open().

CID 1373407

v2: Fixes from Emil Velikov's review
    Update the teardown in reverse order of the setup/init.

Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Mun Gwan-gyeong <elongbug@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com> (v1)
7 years agodocs: get rid of duplicated description from sourcetree.html
Gwan-gyeong Mun [Tue, 22 Nov 2016 11:51:52 +0000 (20:51 +0900)]
docs: get rid of duplicated description from sourcetree.html

Fixes: 438086efb17 (docs: sourcetree.html misc updates)
Signed-off-by: Mun Gwan-gyeong <elongbug@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
7 years agodocs/submitting patches: mention get_reviewers.pl
Emil Velikov [Mon, 21 Nov 2016 17:53:33 +0000 (17:53 +0000)]
docs/submitting patches: mention get_reviewers.pl

Mention the script - why/how to use alongside a useful trick to make it
work interactively (thanks Rob!).

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Elie Tournier <tournier.elie@gmail.com>
7 years agodocs/submitting patches: add git tips
Timothy Arceri [Mon, 21 Nov 2016 16:30:12 +0000 (16:30 +0000)]
docs/submitting patches: add git tips

v2: [Emil Velikov]
 - Add the shorthand git send-email -vX
 - Move to submittingpatches.html
 - Add to the TOC.

v3: [Emil Velikov]
 - Use @~8 instead of HEAD~8 (Nicolai)

Cc: Timothy Arceri <t_arceri@yahoo.com.au>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Brian Paul <brianp@vmware.com> (v1)
7 years agoauxiliary/vl/dri: call get_xcb_screen() only once
Emil Velikov [Mon, 21 Nov 2016 13:46:52 +0000 (13:46 +0000)]
auxiliary/vl/dri: call get_xcb_screen() only once

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
7 years agoegl/x11: store xcb_screen_t *screen instead of int screen
Emil Velikov [Mon, 21 Nov 2016 13:46:51 +0000 (13:46 +0000)]
egl/x11: store xcb_screen_t *screen instead of int screen

Just fetch and store it once, rather than doing the
xcb_setup_roots_iterator + get_xcb_screen dance five times.

v2: Call xcb_disconnect() on error (Eric)

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> (v1)
7 years agoegl/x11: factor out dri2_get_xcb_connection()
Emil Velikov [Mon, 21 Nov 2016 13:46:50 +0000 (13:46 +0000)]
egl/x11: factor out dri2_get_xcb_connection()

Identical throughout dri2, dri3 and drisw. Next patch will add more
common code, so rather than duplicating it factor out the function.

Note: this also sets eglError on failure. Something that's quite
inconsistent throughout the codebase.

v2: Call xcb_disconnect() on error (Eric)

Note: use xcb_disconnect() even in the xcb_connection_has_error() case
as per the manual:
... memory will not be freed until xcb_disconnect...

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> (v1)
7 years agomesa/glsl: remove unused uses_builtin_functions field
Timothy Arceri [Tue, 22 Nov 2016 06:59:41 +0000 (17:59 +1100)]
mesa/glsl: remove unused uses_builtin_functions field

This has been unused since 943b69cddd

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
7 years agoi965: Use NIR-based clip/cull lowering for OpenGL as well.
Kenneth Graunke [Mon, 17 Oct 2016 21:23:10 +0000 (14:23 -0700)]
i965: Use NIR-based clip/cull lowering for OpenGL as well.

The old approach works fine, and this approach isn't necessarily better.
But it at least has the advantage that Vulkan and GL use the same
approach.  I originally wrote it to gain additional testing for the
new paths.

shader-db statistics show 0 instruction count changes.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
7 years agoanv: Enable clip and cull distance support.
Kenneth Graunke [Tue, 4 Oct 2016 03:44:38 +0000 (20:44 -0700)]
anv: Enable clip and cull distance support.

Everything is now in place, and we appear to pass the tests on Gen7+.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
7 years agoi965/vec4: Handle component qualifiers on non-generic varyings.
Kenneth Graunke [Mon, 17 Oct 2016 18:14:10 +0000 (11:14 -0700)]
i965/vec4: Handle component qualifiers on non-generic varyings.

ARB_enhanced_layouts only requires component qualifier support for
generic varyings, so this is all the vec4 backend knew how to handle.

This patch extends the backend to handle it for all varyings, so we
can use store_output intrinsics with a component set for things like
clip/cull distances.  We may want to use that for other VUE header
fields in the future as well.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
7 years agoi965/fs: Handle compact outputs.
Kenneth Graunke [Tue, 4 Oct 2016 08:59:33 +0000 (01:59 -0700)]
i965/fs: Handle compact outputs.

We need to calculate the number of vec4 slots correctly.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
7 years agospirv: Silence unsupported capability warnings for Clip/CullDistance.
Kenneth Graunke [Tue, 4 Oct 2016 06:46:37 +0000 (23:46 -0700)]
spirv: Silence unsupported capability warnings for Clip/CullDistance.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
7 years agoanv: Set clip/cull distances fields in packets.
Kenneth Graunke [Tue, 4 Oct 2016 06:44:07 +0000 (23:44 -0700)]
anv: Set clip/cull distances fields in packets.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
7 years agoanv: Combine ClipDistance and CullDistance arrays.
Kenneth Graunke [Tue, 4 Oct 2016 03:42:42 +0000 (20:42 -0700)]
anv: Combine ClipDistance and CullDistance arrays.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
7 years agonir: add a pass to compact clip/cull distances.
Kenneth Graunke [Tue, 4 Oct 2016 05:37:40 +0000 (22:37 -0700)]
nir: add a pass to compact clip/cull distances.

v2: Use nir_is_per_vertex_io() rather than is_arrays_of_arrays().

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
7 years agonir: Add a "compact array" flag and IO lowering code.
Kenneth Graunke [Tue, 4 Oct 2016 03:32:22 +0000 (20:32 -0700)]
nir: Add a "compact array" flag and IO lowering code.

Certain built-in arrays, such as gl_ClipDistance[], gl_CullDistance[],
gl_TessLevelInner[], and gl_TessLevelOuter[] are specified as scalar
arrays.  Normal scalar arrays are sparse - each array element usually
occupies a whole vec4 slot.  However, most hardware assumes these
built-in arrays are tightly packed.

The new var->data.compact flag indicates that a scalar array should
be tightly packed, so a float[4] array would take up a single vec4
slot, and a float[8] array would take up two slots.

They are still arrays, not vec4s, however.  nir_lower_io will generate
intrinsics using ARB_enhanced_layouts style component qualifiers.

v2: Add nir_validate code to enforce type restrictions.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
7 years agoradv: add support for shader stats dump
Dave Airlie [Tue, 22 Nov 2016 04:17:49 +0000 (04:17 +0000)]
radv: add support for shader stats dump

I've started working on a shader-db alike for Vulkan,
it's based on vktrace and it records pipelines, this
adds support to dump the shader stats exactly like
radeonsi does, so I can reuse the shader-db scripts it
uses.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>
7 years agoradv: fix sample id loading
Dave Airlie [Mon, 21 Nov 2016 01:12:39 +0000 (01:12 +0000)]
radv: fix sample id loading

The sample id is packed into bits 8-12, so adjust
things properly.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>
7 years agoradv/ac: add implementation of load_sample_pos intrinsic.
Dave Airlie [Wed, 16 Nov 2016 03:54:22 +0000 (03:54 +0000)]
radv/ac: add implementation of load_sample_pos intrinsic.

This fixes a bunch of crashes in CTS tests looking for this.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>
7 years agoradv/ac: cleanup ddxy emission
Dave Airlie [Sun, 20 Nov 2016 23:56:45 +0000 (23:56 +0000)]
radv/ac: cleanup ddxy emission

This cleans up the ddxy emission along the same lines as
radeonsi. It also means we don't use LDS on VI chips we
use the dspermute interface, it also removes some duplicated
code.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>
7 years agoradv/meta: cleanup resolve vertex state emission
Dave Airlie [Mon, 21 Nov 2016 03:31:09 +0000 (03:31 +0000)]
radv/meta: cleanup resolve vertex state emission

For the hw resolve there is no need to emit any sort
of texture coordinates, so drop them all in the meta path.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>
7 years agoradv: Incorporate GPU family into cache UUID.
Bas Nieuwenhuizen [Mon, 21 Nov 2016 23:39:50 +0000 (00:39 +0100)]
radv: Incorporate GPU family into cache UUID.

Invalidates the cache when someone switches cards.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
7 years agoradv: Use library mtime for cache UUID.
Bas Nieuwenhuizen [Mon, 21 Nov 2016 23:19:30 +0000 (00:19 +0100)]
radv: Use library mtime for cache UUID.

We want to also invalidate the cache when LLVM gets changed. As the
specific LLVM revision is not fixed at build time, we will need to
check at runtime. Computing a checksum for LLVM is going to be very
expensive, so just use the mtime.

Tested on my computer that the returned DSO for the LLVM symbol is
actually the LLVM DSO.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
7 years agoradv: Store UUID in physical device.
Bas Nieuwenhuizen [Mon, 21 Nov 2016 23:31:44 +0000 (00:31 +0100)]
radv: Store UUID in physical device.

No sense in repeatedly determining it. Also, it might be dependent
on the device as shaders get compiled differently for SI/CIK/VI etc.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
7 years agoglsl: fix NULL check
Timothy Arceri [Tue, 22 Nov 2016 02:19:33 +0000 (13:19 +1100)]
glsl: fix NULL check

Fixes copy and paste error in 9d96d3803ab

7 years agoswr: calculate viewport width/height based on the scale
Ilia Mirkin [Sat, 19 Nov 2016 01:19:24 +0000 (20:19 -0500)]
swr: calculate viewport width/height based on the scale

The former calculations were for min/max y. The width/height don't take
translate into account.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Tim Rowley <timothy.o.rowley@intel.com>
7 years agoswr: don't claim to allow setting layer/viewport from VS
Ilia Mirkin [Sun, 20 Nov 2016 18:13:12 +0000 (13:13 -0500)]
swr: don't claim to allow setting layer/viewport from VS

This may ultimately be possible to support, but for now it's not hooked
up and the swr core only supports this output from GS.

This normally wouldn't matter, but we lie about supporting GL 3.2, and
also the blitter and st/mesa will make use of this functionality if
claimed.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Tim Rowley <timothy.o.rowley@intel.com>
7 years agoswr: allocate all scratch space in one go for vertex buffers
Ilia Mirkin [Sun, 20 Nov 2016 21:34:59 +0000 (16:34 -0500)]
swr: allocate all scratch space in one go for vertex buffers

Multiple buffers may reference client arrays. When this happens, we
might reach for scratch space multiple times, which could cause later
arrays to invalidate the pointers allocated for the earlier ones.

This fixes copyteximage 2D_ARRAY.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>
7 years agoswr: call swr_update_derived unconditionally when drawing/clearing
Ilia Mirkin [Sun, 20 Nov 2016 05:04:42 +0000 (00:04 -0500)]
swr: call swr_update_derived unconditionally when drawing/clearing

Currently a sequence like draw/map/draw/map will cause the second map to
not wait for the second draw. This is because the first map will clear
the resource business bit, and the second draw won't reset it since no
state has changed.

swr_update_derived does a tiny bit of extra work, including updating the
SWR_BACKEND_STATE as well as waiting for prending fences. If that's a
problem, we could call swr_update_resource_status directly from
draw/clear handlers.

Fixes clearbuffer-stencil, clearbuffer-depth, clearbuffer-depth-stencil,
and clearbuffer-display-lists.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>
7 years agoswr: [rasterizer memory] minify texture width before alignment
Ilia Mirkin [Fri, 18 Nov 2016 03:40:29 +0000 (22:40 -0500)]
swr: [rasterizer memory] minify texture width before alignment

The minification should happen before alignment, not after. See similar
logic on ComputeLODOffsetY. The current logic requires unnecessarily
large textures when there's an initial NPOT size.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Tim Rowley <timothy.o.rowley@intel.com>
7 years agoswr: [rasterizer memory] minify original sizes for block formats
Ilia Mirkin [Sat, 12 Nov 2016 08:01:15 +0000 (03:01 -0500)]
swr: [rasterizer memory] minify original sizes for block formats

There's no guarantee that mip width/height will be a multiple of the
compressed block size. Doing a divide by the block size first yields
different results than GL expects, so we do the divide at the end.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Tim Rowley <timothy.o.rowley@intel.com>
7 years agoradeonsi: remove all varyings for depth-only rendering or rasterization off
Marek Olšák [Tue, 15 Nov 2016 20:15:55 +0000 (21:15 +0100)]
radeonsi: remove all varyings for depth-only rendering or rasterization off

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: eliminate VS outputs that aren't used by PS at runtime
Marek Olšák [Mon, 14 Nov 2016 08:09:51 +0000 (09:09 +0100)]
radeonsi: eliminate VS outputs that aren't used by PS at runtime

A past commit added the ability to compile "optimized" shader variants
asynchronously (not stalling the app).

This commit builds upon that and adds what is basically a runtime shader
linker. If a VS output isn't used by the currently-bound PS, a new VS
compilation is started without that output. The new shader variant
is used when it's ready.

All apps using separate shader objects I've seen had unused VS outputs.

Eliminating unused/useless VS outputs also eliminates the corresponding
vertex attribute loads.

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: record information about all written and read varyings
Marek Olšák [Mon, 14 Nov 2016 06:56:57 +0000 (07:56 +0100)]
radeonsi: record information about all written and read varyings

It's just tgsi_shader_info with DEFAULT_VAL varyings removed.

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: make si_shader_io_get_unique_index stricter
Marek Olšák [Sun, 13 Nov 2016 18:54:13 +0000 (19:54 +0100)]
radeonsi: make si_shader_io_get_unique_index stricter

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: don't export ClipVertex and ClipDistance[] if clipping is disabled
Marek Olšák [Sun, 13 Nov 2016 17:41:43 +0000 (18:41 +0100)]
radeonsi: don't export ClipVertex and ClipDistance[] if clipping is disabled

This is the first user of optimized monolithic shader variants.

Cull distances can't be disabled by states.

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: add infrastr. for compiling optimized shader variants asynchronously
Marek Olšák [Thu, 13 Oct 2016 10:18:53 +0000 (12:18 +0200)]
radeonsi: add infrastr. for compiling optimized shader variants asynchronously

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: don't set vs.epilog.export_prim_id if TES is bound
Marek Olšák [Sun, 13 Nov 2016 16:30:54 +0000 (17:30 +0100)]
radeonsi: don't set vs.epilog.export_prim_id if TES is bound

there is no VS epilog in this case

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: simplify checking for monolithic compilation
Marek Olšák [Sun, 13 Nov 2016 18:21:46 +0000 (19:21 +0100)]
radeonsi: simplify checking for monolithic compilation

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: print all flags in si_dump_shader_key
Marek Olšák [Mon, 14 Nov 2016 00:53:24 +0000 (01:53 +0100)]
radeonsi: print all flags in si_dump_shader_key

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: split the shader key into 3 logical parts
Marek Olšák [Sun, 13 Nov 2016 02:17:46 +0000 (03:17 +0100)]
radeonsi: split the shader key into 3 logical parts

key->part.*: prolog and epilog flags only
key->as_{ls,es}: special flags
key->mono.*: flags for monolithic compilation only

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: fix culling if clip & cull distances are used at the same time
Marek Olšák [Sun, 13 Nov 2016 17:12:36 +0000 (18:12 +0100)]
radeonsi: fix culling if clip & cull distances are used at the same time

Fixed piglits:
- arb_cull_distance/clip-cull-3
- arb_cull_distance/clip-cull-4

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: clean up si_emit_clip_regs
Marek Olšák [Sun, 13 Nov 2016 16:51:41 +0000 (17:51 +0100)]
radeonsi: clean up si_emit_clip_regs

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: assume that a VS without POSITION is LS
Marek Olšák [Mon, 14 Nov 2016 01:03:28 +0000 (02:03 +0100)]
radeonsi: assume that a VS without POSITION is LS

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agotgsi/scan: record if a shader writes the position output
Marek Olšák [Mon, 14 Nov 2016 01:01:34 +0000 (02:01 +0100)]
tgsi/scan: record if a shader writes the position output

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agotgsi/scan: use a big switch for scanning outputs
Marek Olšák [Mon, 14 Nov 2016 00:59:42 +0000 (01:59 +0100)]
tgsi/scan: use a big switch for scanning outputs

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: decrease the number of texture slots to 24
Marek Olšák [Sun, 6 Nov 2016 20:49:29 +0000 (21:49 +0100)]
radeonsi: decrease the number of texture slots to 24

Company Of Heroes 2 needs only 24.

This saves 512 bytes of CE RAM per shader stage.

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: fast exit si_emit_derived_tess_state early
Marek Olšák [Fri, 11 Nov 2016 21:36:17 +0000 (22:36 +0100)]
radeonsi: fast exit si_emit_derived_tess_state early

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agowinsys/amdgpu: set addrlib flag opt4Space
Marek Olšák [Fri, 11 Nov 2016 20:19:34 +0000 (21:19 +0100)]
winsys/amdgpu: set addrlib flag opt4Space

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: check for !is_linear in do_hardware_msaa_resolve
Marek Olšák [Fri, 11 Nov 2016 20:15:54 +0000 (21:15 +0100)]
radeonsi: check for !is_linear in do_hardware_msaa_resolve

We don't want opt4Space here.

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agogallium/radeon: add RADEON_SURF_OPTIMIZE_FOR_SPACE
Marek Olšák [Fri, 11 Nov 2016 20:14:03 +0000 (21:14 +0100)]
gallium/radeon: add RADEON_SURF_OPTIMIZE_FOR_SPACE

FORCE_TILING should disable it. It has no effect now, but that may change
soon.

Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
7 years agoradeonsi: Add missing error-checking to si_create_compute_state (v2)
Mun Gwan-gyeong [Mon, 21 Nov 2016 14:20:43 +0000 (23:20 +0900)]
radeonsi: Add missing error-checking to si_create_compute_state (v2)

When the uploading of shader fails on si_shader_binary_upload(),
it returns -ENOMEM. We should handle si_shader_binary_upload() failure path
on si_create_compute_state().

CID 1394027

v2: Fixes from Edward O'Callaghan's review
 a) Update explicitly return value check with "si_shader_binary_upload() < 0"
 b) Update commit message.

Signed-off-by: Mun Gwan-gyeong <elongbug@gmail.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
7 years agodraw: drop some overflow computations
Roland Scheidegger [Sun, 13 Nov 2016 15:33:37 +0000 (16:33 +0100)]
draw: drop some overflow computations

It turns out that noone actually cares if the address computations overflow,
be it the stride mul or the offset adds.
Wrap around seems to be explicitly permitted even by some other API (which
is a _very_ surprising result, as these overflow computations were added just
for that and made some tests pass at that time - I suspect some later fixes
fixed the actual root cause...). So the requirements in that other api were
actually sane there all along after all...
Still need to make sure the computed buffer size needed is valid, of course.
This ditches the shiny new widening mul from these codepaths, ah well...

And now that I really understand this, change the fishy min limiting
indices to what it really should have done. Which is simply to prevent
fetching more values than valid for the last loop iteration. (This makes
the code path in the loop minimally more complex for the non-indexed case
as we have to skip the optimization combining two adds. I think it should
be safe to skip this actually there, but I don't care much about this
especially since skipping that optimization actually makes the code easier
to read elsewhere.)

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
7 years agodraw: simplify fetch some more
Roland Scheidegger [Sun, 13 Nov 2016 15:33:20 +0000 (16:33 +0100)]
draw: simplify fetch some more

Don't keep the ofbit. This is just a minor simplification, just adjust
the buffer size so that there will always be an overflow if buffers aren't
valid to fetch from.
Also, get rid of control flow from the instanced path too. Not worried about
performance, but it's simpler and keeps the code more similar to ordinary
fetch.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
7 years agodraw: unify linear and elts draw jit functions
Roland Scheidegger [Sun, 13 Nov 2016 15:32:24 +0000 (16:32 +0100)]
draw: unify linear and elts draw jit functions

The code for elts and linear paths was nearly 100% identical by now - with
the elts path simply having some additional gather for the elements in the
main loop (with some additional small differences before the main loop).

Hence nuke the separate functions and decide this at jit shader execution
time (simply based on the presence of the elts pointer).

Some analysis shows that the generated vs jit functions seem to be just very
minimally more complex than the former elts functions, and almost none of the
additional complexity is in the main loop (basically just the branch logic
for the branch fetching the actual indices).
Compared to linear, the codesize of the function is of course a bit larger,
however the actual executed code in the main loop appears to be near 100%
identical (the additional code looking up indices is skipped as expected).

So, I would not expect a (meaningful) performance difference with the
generated code, neither with elts nor linear, this does however roughly
half the compilation time (the compiled shaders should also use only half
the memory of course).

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
7 years agodraw: use same argument order for jit draw linear / elts functions
Roland Scheidegger [Sun, 13 Nov 2016 15:31:57 +0000 (16:31 +0100)]
draw: use same argument order for jit draw linear / elts functions

This is a bit simpler. Mostly to make it easier to unify the paths later...

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
7 years agodraw: drop unnecessary index overflow handling from vsplit code
Roland Scheidegger [Sun, 13 Nov 2016 16:17:25 +0000 (17:17 +0100)]
draw: drop unnecessary index overflow handling from vsplit code

This was kind of strange, since it replaced indices which were only
overflowing due to bias with MAX_UINT. This would cause an overflow later
in the shader, except if stride was 0, however the vertex id would be
essentially random then (-1 + eltBias). No test cared about it, though.
So, drop this and just use ordinary int arithmetic wraparound as usual.
This is much simpler to understand and the results are "more correct" or
at least more consistent (vertex id as well as actual fetch results just
correspond to wrapped around arithmetic).
There's only one catch, it is now possible to hit the cache initialization
value also with ushort and ubyte elts path (this wouldn't be an issue if
we'd simply handle the eltBias itself later in the shader). Hence, we need
to make sure the cache logic doesn't think this element has already been
emitted when it has not (I believe some seriously bad things could happen
otherwise). So, borrow the logic which handled this from the uint case, but
not before fixing it up...

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
7 years agodraw: simplify vsplit elts code a bit
Roland Scheidegger [Sat, 12 Nov 2016 21:47:22 +0000 (22:47 +0100)]
draw: simplify vsplit elts code a bit

vsplit_get_base_idx explicitly returned idx 0 and set the ofbit
in case of overflow. We'd then check the ofbit and use idx 0 instead of
looking it up. This was necessary because DRAW_GET_IDX used to return
DRAW_MAX_FETCH_IDX and not 0 in case of overflows.
However, this is all unnecessary, we can just let DRAW_GET_IDX return 0
in case of overflow. In fact before bbd1e60198548a12be3405fc32dd39a87e8968ab
the code already did that, not sure why this particular bit was changed
(might have been one half of an attempt to get these indices to actual draw
shader execution - in fact I think this would make things less awkward, it
would require moving the eltBias handling to the shader as well).
Note there's other callers of DRAW_GET_IDX - those code paths however
explicitly do not handle index buffer overflows, therefore the overflow
value doesn't matter for them.

Also do some trivial simplification - for (unsigned) a + b, checking res < a
is sufficient for overflow detection, we don't need to check for res < b too
(similar for signed).

And an index buffer overflow check looked bogus - eltMax is the number of
elements in the index buffer, not the maximum element which can be fetched.
(Drop the start check against the idx buffer though, this is already covered
by end check and end < start).

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
7 years agogallium: Add support for SWR compilation
George Kyriazis [Fri, 11 Nov 2016 18:09:36 +0000 (12:09 -0600)]
gallium: Add support for SWR compilation

Include swr library and include -DHAVE_SWR in the compile line.

v3: split to a separate commit

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
7 years agogallium: swr: Added swr build for windows
George Kyriazis [Fri, 18 Nov 2016 17:40:09 +0000 (11:40 -0600)]
gallium: swr: Added swr build for windows

v4: Add windows-specific gen_knobs.{cpp|h} changes
v5: remove aggresive squashing of gen_knobs.py to this commit; added
SConscript to EXTRA_DIST in Makefile.am

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
7 years agoswr: Modify gen_knobs.{cpp|h} creation script
George Kyriazis [Fri, 18 Nov 2016 17:38:30 +0000 (11:38 -0600)]
swr: Modify gen_knobs.{cpp|h} creation script

Modify gen_knobs.py so that each invocation creates a single generated
file.  This is more similar to how the other generators behave.

v5: remove Scoscript edits from this commit; moved to commit that first
adds SConscript

Acked-by: Emil Velikov <emil.velikov@collabora.com>
7 years agoscons: Add swr compile option
George Kyriazis [Wed, 16 Nov 2016 00:52:39 +0000 (18:52 -0600)]
scons: Add swr compile option

To buils The SWR driver (currently optional, not compiled by default)

v3: add option as opposed to target

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>