radeonsi/ac: move a bunch of load/store related things to common code.

These are all shareable with radv, so start migrating them to the
common code.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

texgetimage: Add check for the effective target to GetTextureSubImage

OpenGL 4.5 spec, section "8.11.4 Texture Image Queries", page 233 of
the PDF states:

    "An INVALID_OPERATION error is generated if texture is the name of a buffer
     or multisample texture."

This is currently not being checked and e.g a multisample texture image can
be passed down to the driver hook. On i965, it is crashing the driver with an
assertion:

intel_mipmap_tree.c:3125: intel_miptree_map: Assertion `mt->num_samples <= 1' failed.

v2: (Ilia Mirkin) Move the check from gettextimage_error_check() to
    GetTextureSubImage() and use the texObj target.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

Revert "radeonsi: decrease the number of texture slots to 24"

This reverts commit bdd860e3076655519d45bd66936ef7be9b7dda63.

Requested by a game developer.

Cc: 17.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

configure.ac: explicitly require libdrm for dri classic drivers.

Although this might come from somewhere else require it explicitly.

Reviewed-by: Chad Versace <chadversary@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

intel/isl: Add a better comment for format_supports_ccs_e

Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

anv: Remove the finishme for CCS_E with storage images

The data port can't handle CCS at all so replace the finishme with
better comments.

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

intel/isl: Assert that we don't use CCS for storage images

I enabled CCS for storage images in the Vulkan driver and ran it through
the CTS.  It didn't result in any hangs but it demonstrated that the data
port cannot handle CCS.

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

intel/isl: Add a formats_are_ccs_e_compatible helper

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

intel/isl: Add a format_supports_ccs_d helper

Nothing uses this yet but it serves as a nice bit of documentation
that's relatively easy to find.

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

intel/isl: Rename supports_lossless_compression to supports_ccs_e

The term "lossless compression" could potentially mean multisample
color compression, single-sample color compression or HiZ because they
are all lossless.  The term CCS_E, however, has a very precise meaning;
in ISL and is only used to refer to single-sample color compression.
It's also much shorter which is nice.

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>

anv/pass: Store the depth-stencil attachment's last subpass index

Commit 968ffd6c868af7226e8f889573eef709888151cb stored the last subpass
index of all the attachments but that of the depth-stencil attachment.
This could cause depth buffers used in multiple subpasses not to be in
the requested final layout. Fix this error.

Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Nanley Chery <nanley.g.chery@intel.com>

gallium: turn PIPE_SHADER_CAP_DOUBLES into a screen capability

Make the cap consistent with PIPE_CAP_INT64.

Aside from the hypothetical case of using draw for vertex shaders (and
actually caring about doubles...), every implementation supports doubles
either nowhere or everywhere.

Also, st/mesa didn't even check the cap correctly in all supported
shader stages.

While at it, add a missing LLVM version check for 64-bit integers in
radeonsi. This is conservative: judging by the log, LLVM 3.8 might be
sufficient, but there are probably bugs that have been fixed since then.

v2: fix clover (Marek)

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

mesa: Enable EXT_compressed_ETC1_RGB8_sub_texture

Since we already have the functionality in place and games
like Game of Thrones seem to depend on this extension, I
think it makes sense to enable it by making it part of
the extension string even though it's still a draft:

https://www.khronos.org/registry/gles/extensions/EXT/EXT_compressed_ETC1_RGB8_sub_texture.txt

Note: OES_compressed_ETC1_RGB8_sub_texture seems to be listed
in gl2ext.h, but there's no documentation for it in the KHR
registry

Signed-off-by: Plamena Manolova <plamena.manolova@intel.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

configure: Only require libdrm 2.4.75 for intel.

Fixes: b8acb6b17981 ("configure: Require libdrm >= 2.4.75")
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Acked-by: Dave Airlie <airlied@redhat.com>

anv: enable VK_KHR_shader_draw_parameters

Enables 10 tests from:

   dEQP-VK.draw.shader_draw_parameters.*

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

anv: emit DrawID if needed

v2: use define for buffer ID (Jason)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

anv: always allocate a vertex element with vertexid or instanceid

Up to now on Gen8+ we only allocated a vertex element for
gl_InstanceIndex or gl_VertexIndex when a vertex shader uses
gl_BaseInstanceARB or gl_BaseVertexARB. This is because we would
configure the VF_SGVS packet to make the VF unit write the
gl_InstanceIndex & gl_VertexIndex values right behind the values
computed from the vertex buffers.

In the next commit we will also write the gl_DrawIDARB value. Our
backend expects to pull the gl_DrawIDARB value from the element
following the element containing gl_InstanceIndex, gl_VertexIndex,
gl_BaseInstanceARB and gl_BaseVertexARB (see
vec4_vs_visitor::setup_attributes). Therefore we need to allocate an
element for the SGVS elements as long as at least one of the SGVS
element is read by the shader. Otherwise our shader will use a
gl_DrawIDARB value pulled from the URB one element too far (most
likely garbage).

v2: Fix my english (Lionel)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

anv: move BaseVertexID/BaseInstanceID vertex buffer index to 31

v2: use define for buffer ID (Jason)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

anv: limit vertex buffers to 31

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

android: fix llvm, elf dependencies for M, N releases

These changes set the correct llvm version and elf include path
which differ for Marshmallow and Nougat

Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

anv: Don't use bogus alpha swizzles

For RGB formats in Vulkan, we use the corresponding RGBA format with a
swizzle of RGB1.  While this swizzle is exactly what we want for
texturing, it's not allowed for rendering according to the docs.  While
we haven't been getting hangs or anything, we should probably obey the
docs.  This commit just sanitizes all render swizzles so that the alpha
channel maps to ALPHA.

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

Add missing copyright header to wayland-egl-priv.h

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

radv: handle VK_QUEUE_FAMILY_IGNORED in image transitions (v3)

The CTS tests at least are using this, and we were totally
ignoring it.

This hopefully fixes the bouncing multisample CTS tests.

v2: get family mask in ignored case from command buffer.
v3: only change things in one place, use logic from Bas.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: handle clip/cull distance sizing in geometry shader outputs

Otherwise we were writing these as 4 components, and things went bad.

Fixes (the remaining):
dEQP-VK.clipping.user_defined.*.vert_geom.*

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: add const_index to fetch index for gs inputs

This fixes clip distance fetches as they are single item loads
with a const_index like float[1].

Fixes:
dEQP-VK.clipping.user_defined.*.vert_geom.[0-6]

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radeonsi/ac: move frag interp emission code to shared llvm code.

This code should be used in radv, so move it to a shared location
in advance of doing that.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

st/mesa: inline get_mesa_program()

In the past I've gotten this function confused with the one in
ir_to_mesa.cpp of the same name. Now that the affected flag setting
has move into a helper it makes sense just to inline this remaining
code.

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

st/mesa: create set_prog_affected_state_flags() helper

This will be used when restoring tgsi from the on-disk shader
cache.

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

st/mesa: st_atom_shader.c C99 tidy up

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

st/mesa: remove pre C99 statement block for variable declaration

Acked-by: Marek Olšák <marek.olsak@amd.com>

isl: Add assertions for render target swizzle restrictions

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

st/va: add h264 constrained baseline profile

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

st/vdpau: add h264 constrained baseline profile

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

radeon/uvd: add h264 constrained baseline support

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

vl: add h264 constrained baseline profile

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

radv: Enable VK_KHR_shader_draw_parameters.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>

radv: Pass draw index to shader.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>

radv/ac: Add draw index support.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>

i965: Prevent coverity warning

Add assert checking that num_sources is never larger than 3.

This prevents Coverity from concluding that the unhandled
cases of num_sources not being 0-3 are relevant.

Coverity-Id: 1399480-1399489
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

spirv: add SPV_KHR_shader_draw_parameters support

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

compiler: add missing enums for debug

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

docs: add news item and link release notes for 13.0.4

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

docs: add sha256 checksums for 13.0.4

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
(cherry picked from commit 6bfc352f5a35ab21f012d6d501821ffbf767aab3)

docs: add release notes for 13.0.4

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
(cherry picked from commit 3255d10da4c2703bfdfcefd8f59b0d8f21dbb43f)

winsys/radeon: Allow visible VRAM size > 256MB with kernel driver >= 2.49

The kernel driver reports correct values now.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

android: add vulkan build for intel

fixes to issues spotted by Emil Velikov:

   - set ANV_TIMESTAMP corretly
   - fix typo with VULKAN_GEM_FILES

v2: update to use Makefile.sources under vulkan
    instead of having own

v3: update to changes to generate from vk.xml
    (commit c7fc310)

v4: remove 'hw' relative path
    cleanups, remove unnecessary cruft

    review from Emil Velikov:

    - move to vulkan folder
    - remove timestamp gen, no longer necessary
    - more cleanups

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

mesa: use same is_color_attachment trick to discern error cases

All the other calls to retrieve the attachment have been covered except
this one - return the proper error for attachment points that are valid
enums but out of bound for the driver.

Fixes GL45-CTS.geometry_shader.layered_fbo.fb_texture_invalid_attachment

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

anv: Improve flushing around STATE_BASE_ADDRESS

It is not clear from the docs exactly how pipelined STATE_BASE_ADDRESS
actually is.  We know from experimentation that we need to flush the
render cache prior to emitting STATE_BASE_ADDRESS and invalidate the
texture cache afterwards.  The only thing the PRM says is that, on gen8+
we're supposed to invalidate the state cache after STATE_BASE_ADDRESS
but experimentation has indicated that doing so does nothing whatsoever.

Since we don't really know, let's do just a bit more flushing in the
hopes that this won't be a problem again.  In particular:

 1) Do a CS stall before we emit STATE_BASE_ADDRESS since we don't
    really know whether or not it's pipelined.

 2) Do a data cache flush in case what runs before STATE_BASE_ADDRESS
    is a compute shader.

 3) Invalidate the state and constant caches after STATE_BASE_ADDRESS
    because the state may be getting cached there (we don't really know).

Reported-by: Mark Janes <mark.a.janes@intel.com>
Tested-by: Mark Janes <mark.a.janes@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>

anv: Flush render cache before STATE_BASE_ADDRESS on gen7

We had no good reason for *not* doing this on gen7 before but we didn't
know it was needed.  Recently, when trying update to Vulkan CTS version
1.0.2 in our CI system, Mark discovered GPU hangs on Haswell that appear
to be STATE_BASE_ADDRESS related.  This commit fixes them.

Reported-by: Mark Janes <mark.a.janes@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>

isl/formats: Only advertise sampling for A4B4G4R4 on Broadwell

This causes hangs on Broadwell if you try to render to it.  I have no
idea how we managed to not hit this earlier.

Tested-by: Mark Janes <mark.a.janes@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>

intel/blorp: Handle clearing of A4B4G4R4 on all platforms

Tested-by: Mark Janes <mark.a.janes@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>

radeonsi: Fix build on LLVM < 3.9 v2

This was broken by: e0cc0a614c96011958bc3a1b84da9168e0e1ccbb

v2:
  - Use preprocessor macro

Tested-by: Mark Janes <mark.a.janes@intel.com>

radv: Enable Float64 support.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>

radv/ac: Implement Float64 SSBO loads.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>

radv/ac: Implement Float64 UBO loads.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>

radv/ac: Implement Float64 load/store var.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>

radv/ac: Implement Float64 SSBO stores.

No f16 support as I'm not quite sure about alignment yet.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>

radv/ac: Add core Float64 support.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>

vc4: Enable Neon on arm android builds

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

vc4: fix arm64 build with Neon

The addition of Neon assembly breaks on arm64 builds because the assembly
syntax is different. For now, restrict Neon to ARMv7 builds.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

vc4: Make Neon inline assembly clang compatible

clang throws an error on "%r2" and similar. I couldn't find any
documentation on what "%r?" is supposed to mean and I've never seen any
use like that as far as I remember. The parameter is supposed to be
cpu_stride and just %2/%3 should be sufficient.

There's no need for trailing ";" either, so remove those, too.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

radeonsi: Set datalayout on the llvm module

This prevents LLVM from using sext instructions for local memory offsets
and allows the backend to fold immediate offsets into the instruction.

This also prevents some incorrect code generation for ptrtoint and
inttoptr instructions.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

nir/spirv/glsl450: Implement IEEE-compliant handling of atan2(±∞, ±∞).

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Juan A. Suarez Romero <jasuarez@igalia.com>

glsl: Implement IEEE-compliant handling of atan2(±∞, ±∞).

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Juan A. Suarez Romero <jasuarez@igalia.com>

nir/spirv/glsl450: Rewrite atan2 implementation to fix accuracy and handling of zero/infinity.

See "glsl: Rewrite atan2 implementation to fix accuracy and handling
of zero/infinity." for the rationale, but note that the instruction
count benefit discussed there is somewhat less important for the SPIRV
implementation, because the current code already emitted no control
flow instructions -- Still this saves us one hardware instruction per
scalar component on Intel SKL hardware.

Fixes the following Vulkan CTS tests on Intel hardware:

    dEQP-VK.glsl.builtin.precision.atan2.highp_compute.scalar
    dEQP-VK.glsl.builtin.precision.atan2.highp_compute.vec2
    dEQP-VK.glsl.builtin.precision.atan2.highp_compute.vec3
    dEQP-VK.glsl.builtin.precision.atan2.highp_compute.vec4
    dEQP-VK.glsl.builtin.precision.atan2.mediump_compute.vec2
    dEQP-VK.glsl.builtin.precision.atan2.mediump_compute.vec4

Note that most of the test-cases above expect IEEE-compliant handling
of atan2(±∞, ±∞), which this patch doesn't explicitly handle, so
except for the last two the test-cases above weren't expected to pass
yet.  The reason they do is that the i965 back-end implementation of
the NIR fmin and fmax instructions is not quite GLSL-compliant (it
complies with IEEE 754 recommendations though), because fmin/fmax of a
NaN and a non-NaN argument currently always return the non-NaN
argument, which causes atan() to flush NaN to one and return the
expected value.  The front-end should probably not be relying on this
behavior for correctness though because other back-ends are likely to
behave differently -- A follow-up patch will handle the atan2(±∞, ±∞)
corner cases explicitly.

v2: Fix up argument scaling to take into account the range and
    precision of exotic FP24 hardware.  Flip coordinate system for
    arguments along the vertical line as if they were on the left
    half-plane in order to avoid division by zero which may give
    unspecified results on non-GLSL 4.1-capable hardware.  Sprinkle in
    some more comments.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

glsl: Rewrite atan2 implementation to fix accuracy and handling of zero/infinity.

This addresses several issues of the current atan2 implementation:

 - Negative zero (and negative denorms which end up getting flushed to
   zero) isn't handled correctly by the current implementation.  The
   reason is that it does 'y >= 0' and 'x < 0' comparisons to decide
   on which side of the branch cut the argument is, which causes us to
   return incorrect results (off by up to 2π) for very small negative
   values.

 - There is a serious precision problem for x values of large enough
   magnitude introduced by the floating point division operation being
   implemented as a mul+rcp sequence.  This can lead to the quotient
   getting flushed to zero in some cases introducing an error of over
   8e6 ULP in the result -- Or in the most catastrophic case will
   cause us to return NaN instead of the correct value ±π/2 for y=±∞
   and x very large.  We can fix this easily by scaling down both
   arguments when the absolute value of the denominator goes above
   certain threshold.  The error of this atan2 implementation remains
   below 25 ULP in most of its domain except for a neighborhood of y=0
   where it reaches a maximum error of about 180 ULP.

 - It emits a bunch of instructions including no less than three
   if-else branches per scalar component that don't seem to get
   optimized out later on.  This implementation uses about 13% less
   instructions on Intel SKL hardware and doesn't emit any control
   flow instructions.

v2: Fix up argument scaling to take into account the range and
    precision of exotic FP24 hardware.  Flip coordinate system for
    arguments along the vertical line as if they were on the left
    half-plane in order to avoid division by zero which may give
    unspecified results on non-GLSL 4.1-capable hardware.  Sprinkle in
    some more comments.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965/fs: Fix nir_op_fsign of absolute value.

This does point at the front-end emitting silly code that could have
been optimized out, but the current fsign implementation would emit
bogus IR if abs was set for the argument (because it would apply the
abs modifier on an unsigned integer type), and we shouldn't rely on
the upper layer's optimization passes for correctness.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

glsl/ir_builder: Add rcp builder.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Juan A. Suarez Romero <jasuarez@igalia.com>

glsl: Fix constant evaluation of the rcp op.

Will avoid a regression in a future commit that introduces some
additional rcp operations.  According to the GLSL 4.10 specification:

"Dividing by 0 results in the appropriately signed IEEE Inf."

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Juan A. Suarez Romero <jasuarez@igalia.com>

mesa/program: Translate csel operation from GLSL IR.

This will be used internally by the GLSL front-end in order to
implement some built-in functions. Plumb it through MESA IR for
back-ends that rely on this translation pass.

v2: Add comment.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Juan A. Suarez Romero <jasuarez@igalia.com>

etnaviv: Set SE.CLIP registers, add margins for scissor/clip registers

This fixes rendering of full-screen quads (and other screen-filling
geometry, e.g. ioquake3 walls up-close) on gc3000. It should be a no-op
on other hardware.

- It looks like SE_CLIP registers were not set at all.
  I'm amazed that rendering worked without them. Emit them to
  avoid issues on gc3000.

- Define constants
  ETNA_SE_SCISSOR_MARGIN_RIGHT (0x1119)
  ETNA_SE_SCISSOR_MARGIN_BOTTOM (0x1111)
  ETNA_SE_CLIP_MARGIN_RIGHT (0xffff)
  ETNA_SE_CLIP_MARGIN_BOTTOM (0xffff)

  These demarcate the margin (fixp16) between the computed sizes and the
  value sent to the chip. I have set these to the numbers used by the
  Vivante driver for gc2000. I am not sure whether any old hardware was
  relying on the old numbers, or whether those were just a guess. But if
  so, these need to be moved to the _specs structure.

CC: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com>

etnaviv: Generate new sin/cos instructions on GC3000

Shaders using sin/cos instructions were not working on GC3000.

The reason for this turns out to be that these chips implement sin/cos
in a different way (but using the same opcodes):

- Need their input scaled by 1/pi instead of 2/pi.

- Output an x and y component, which need to be multiplied to
  get the result.

- tex_amode needs to be set to 1.

Add a new bit to the compiler specs and generate these instructions
as necessary.

CC: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com>

anv/cmd_buffer: Use the proper depth input attachment surface state

Commit 2852efcda40274acf3272611c6a3b7731523a72d moved the location of
the depth input attachment surface state from the render pass to the
image view, but failed to update the surface state location used when
emitting the binding table. Fix this by loading the surface state from
the correct location.

Fixes:
dEQP-VK.renderpass.formats.d16_unorm.input.*
dEQP-VK.renderpass.formats.d24_unorm_s8_uint.input.*
dEQP-VK.renderpass.formats.d32_sfloat.input.*
dEQP-VK.renderpass.formats.x8_d24_unorm_pack32.input.*
dEQP-VK.renderpass.attachment_allocation.input_output.93
dEQP-VK.renderpass.attachment_allocation.input_output.92
dEQP-VK.renderpass.attachment_allocation.input_output.82
dEQP-VK.renderpass.attachment_allocation.input_output.46

Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Nanley Chery <nanley.g.chery@intel.com>

glsl: fix heap-buffer-overflow

The `end+1` skips the ']', whereas the `strlen+1` includes the final
'\0' in the move to terminate the string.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

etnaviv: Cannot render to rb-swapped formats

Exposing rb swapped (or other swizzled) formats for rendering would
involve swizzing in the pixel shader. This is not the case at the
moment, so reject requests for creating such surfaces.

(GPUs that need an extra resolve step anyway due to multiple pixel
pipes, such as gc2000, might also do this swap in the resolve operation.
But this would be tricky to keep track of)

CC: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Acked-by: Christian Gmeiner <christian.gmeiner@gmail.com>

etnaviv: Avoid infinite loop in find_frame()

Use of unsigned loop control variable with '>= 0' would lead
to infinite loop.

Reported by clang:

etnaviv_compiler.c:1024:39: warning: comparison of unsigned expression
>= 0 is always true [-Wtautological-compare]
   for (unsigned sp = c->frame_sp; sp >= 0; sp--)
                                   ~~ ^  ~

v2: Simply use the same datatype as c->frame_sp is using.

CC: <mesa-stable@lists.freedesktop.org>
Reported-by: Rhys Kidd <rhyskidd@gmail.com>
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rhys Kidd <rhyskidd@gmail.com>

radv/ac: apply slice rounding to 1d arrays as well.

Fixes:
dEQP-VK.glsl.texture_functions.texture.*1darray*

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/geom: check if esgs and gsvs ring exists before filling geom rings

There are some corner cases where you end up with an esgs ring, but no
gsvs ring, test for both before dereferencing.

Fixes:
dEQP-VK.geometry.emit.points_emit_0_end_0

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: enable geometryShader and multiViewport capabilities.

This enables geometry shader support on radv.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: handle layer export from vs->fs properly

Fixes:
dEQP-VK.geometry.layered.1d_array.fragment_layer

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: emit esgs itemsize register.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: handle prim id inputs to fragment shader.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: emit geometry shaders to hardware

This emits the compiled geometry shader and other state registers.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: emit geometry ring size and pointers via preamble (v2)

This uses the scratch infrastructure to handle the esgs
and gsvs rings.

(this replaces the old code that did this with patching).

v2: fix correct ring sizes, reset sizes (Bas)

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: add gs ring size calculations to pipeline.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: add pipeline creation support for geometry shaders (v2.1)

This adds gs copy shader support to the pipeline cache, and few
geometry related changes.

v2: rebase for spill changes.
v2.1: fix incorrect pipeline destruction.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: handle primitive id

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: handle emitting vertex outputs to esgs ring.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: handle gs inputs

This handles geometry shader inputs written by the vertex (es) shader
to the esgs ring.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: add geom input support to get deref offset.

This just adds the API and fixes up the callers.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: handle invocation and primitive id intrinsics

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: handle geometry emit vertex and end prim intrinsics.

This handles emitting things to the gsvs ring, and sending the
correct GS msgs.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: handle emitting gs epilogue

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: add copy shader creation

This create the gs copy shader and compiles it.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: setup function parameters for vs as es and copy shader.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: pass some necessary gs info back to state handling.

We need this info to program some registers.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: emit vertex shader to correct hw block.

This emits the shader to the ES block in the correct case.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: propogate as_es flag into shader info from key.

This just places the flag into the shader info so we can use it from
the driver after we create the shader.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv: extend shader stage code to cover geometry shaders.

This enables the paths for setting up user ptrs to vs/es and gs.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: start setting up the geom shader rings (v2)

This sets up the rings and adds the variables
needed to make them work.

v2: rework for sharing ring and scratch
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>