nir/spirv: Complete the list of capabilities

Previously we supported a subset of capabilities and just left a default
case for the others.  It's time to stop being lazy and actually audit the
capabilities.  This should bring them up-to-date with reality.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

anv/pipeline: Add support for early depth stencil

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

mesa: Get rid of _mesa_active_fragment_shader_has_side_effects

It is no longer used.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

i965/ps_state: Use wm_prog_data.has_side_effects

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

i965/fs Add a wm_prog_data bit for has_side_effects

This is more accurate than calling
_mesa_active_fragment_shader_has_side_effects because it looks at whether
or not the SSBOs, images, or atomic buffers are actually written rather
than just existing in the program.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

nir/info: Get rid of uses_interp_var_at_offset

We were using this briefly in the i965 driver to trigger recompiles but we
haven't been using it since we switched to the NIR y-transform lowering
pass.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

anv/pipeline: Silently pass tests if depth or stencil is missing

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

anv/pipeline: Unify gen7/8 emit_ds_state

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

genxml/gen6,7,75: s/BackFace/Backface

This is more consistent with gen8+

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

nir/spirv: Handle the WorkgroupSize builtin decoration

This fixes the 7 dEQP-VK.pipeline.spec_constant.compute.local_size.* tests
in the latest dev version of the Vulkan CTS.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

nir/spirv: Use breaks instead of returns in constant handling

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

anv/pipeline: Refactor specialization constant handling a bit

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

nir/lower_indirect_derefs: Use the direct array deref for recursion

This fixes about 100 of the new Vulkan CTS tests.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

anv/clear: Handle ClearImage on 3-D images

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

Revert "i965/fs: Allow scalar source regions on SNB math instructions."

This reverts commit c1107cec44ab030c7fcc97c67baa12df1cc9d7b5.
Apparently the hardware spec text I quoted in the commit message was
outright lying about scalar source math being supported on SNB, the
hardware seems to load 32 contiguous bits of data for each channel
regardless of the regioning mode.  Fixes regressions in the following
CTS tests (which we didn't catch early due to CTS being temporarily
disabled in our CI system):

   es2-cts.gtf.gl.atan.atan_vec3_frag_xvary
   es2-cts.gtf.gl.cos.cos_vec2_frag_xvary
   es2-cts.gtf.gl.atan.atan_vec2_frag_xvary
   es2-cts.gtf.gl.pow.pow_vec2_frag_xvary_yconsthalf
   es2-cts.gtf.gl.cos.cos_float_frag_xvary
   es2-cts.gtf.gl.pow.pow_float_frag_xvary_yconsthalf
   es2-cts.gtf.gl.atan.atan_vec3_frag_xvaryyvary
   es2-cts.gtf.gl.pow.pow_vec3_frag_xvary_yconsthalf
   es2-cts.gtf.gl.cos.cos_vec3_frag_xvary
   es2-cts.gtf.gl.atan.atan_vec2_frag_xvaryyvary

Cc: mesa-stable@lists.freedesktop.org
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96346
Reported-by: Mark Janes <mark.a.janes@intel.com>
Acked-by: Matt Turner <mattst88@gmail.com>

i965/vec4: Fix cmod propagation not to propagate non-identity cmod into CMP(N).

The conditional mod of these instructions determines the semantics of
the comparison itself (rather than being evaluated based on the result
of the instruction as is usually the case for most other instructions
that allow conditional mods), so it's in general not legal to
propagate a conditional mod into a CMP instruction.  This prevents
cmod propagation from (mis)optimizing:

 cmp.z.f0 tmp, ...
 mov.z.f0 null, tmp

into:

 cmp.z.f0 tmp, ...

which gives the negation of the flag result of the original sequence.
I originally noticed this while working on SIMD32 in the scalar
back-end, but the same scenario is likely to be possible in vec4
programs so this commit ports the bugfix with the same name from the
scalar back-end to the vec4 cmod propagation pass.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

anv: add the X related and Wayland CFLAGS to VULKAN_ENTRYPOINT_CPPFLAGS

Otherwise we will fail to find the headers in some scenarios.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reported-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Tested-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Reviewed-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>

nir: automake: add nir_search_helpers.h to the sources list(s)

Fixes: dfbae7d64f4 ("nir/algebraic: support for power-of-two
optimizations")
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

freedreno/ir3: do idiv lowering after main opt loop

Give algebraic-opt pass a chance to catch udiv by const power-of-two,
before running lower-idiv pass.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

nir/algebraic: support for power-of-two optimizations

Some optimizations, like converting integer multiply/divide into left/
right shifts, have additional constraints on the search expression.
Like requiring that a variable is a constant power of two.  Support
these cases by allowing a fxn name to be appended to the search var
expression (ie. "a#32(is_power_of_two)").

Signed-off-by: Rob Clark <robclark@freedesktop.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

radeonsi: mark buffer texture range valid for shader images

When a shader image view into a buffer texture can be written to, the buffer's
valid range must be updated, or subsequent transfers may incorrectly skip
synchronization.

This fixes a bug that was exposed in Xephyr by PBO acceleration for glReadPixels,
reported by Michel Dänzer.

Cc: Michel Dänzer <michel.daenzer@amd.com>
Cc: 12.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

Revert "egl: Check if API is supported when using eglBindAPI."

This reverts commit e8b38ca202fbe8c281aeb81a4b64256983f185e0.

It broke Glamor for Gallium at least.

mesa/formatquery: expand NUM_SAMPLE_COUNTS OpenGL ES comment

For ES 3.0 NUM_SAMPLE_COUNTS spec points that some formats will be
always zero. But on ES 3.1 can be different to zero.

The current code is correctly checking exactly against version 3.0,
but the comment only mentions 3.0 spec. It is clearer mentioning both.

v2: better wording on the comment (Ian Romanick)

Acked-by: Eduardo Lima <elima@igalia.com>
Acked-by: Antia Puentes <apuentes@igalia.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mesa/get: return correct value for layer provoking vertex.

This fixes:
GL45-CTS.geometry_shader.layered_rendering.layered_rendering

on Skylake.

Reviewed-by: Chris Forbes <chrisforbes@google.com>
Cc: "11.2 12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

egl: Account for default values of texture target and format

When validating attributes during surface creation we should account
for the default values of texture target and format (EGL_NO_TEXTURE)
since the user is not obligated to explicitly set both via the
attribute list passed to eglCreatePbufferSurface.

Signed-off-by: Plamena Manolova <plamena.manolova@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

nvc0: mark buffer texture range valid for shader images

Loosely based on radeonsi (Thanks to Nicolai).

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: 12.0 <mesa-stable@lists.freedesktop.org>

isl: add support for Android libmesa_isl static library

isl library is needed to build i965, libmesa_isl static library is added
to fix related Android building errors.

Any attempt to build libmesa_genxml as phony package module failed to deliver
gen{7,75,8,9}_pack.h generated headers, needed for libmesa_isl_gen{7,75,8,9}

Due to constraints in Android Build System, libmesa_genxml is built as static,
at least one source is needed, so dummy.c is autogenerated for this scope,
libmesa_genxml dependency is declared using LOCAL_WHOLE_STATIC_LIBRARIES,
to avoid building errors due to missing genxml/gen{7,75,8,9}_pack.h headers.

Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

android: libmesa_glsl: add a dependency on libmesa_nir static

Fixes the following building error:

target  C++: libmesa_glsl <= external/mesa/src/compiler/glsl/glsl_to_nir.cpp
In file included from external/mesa/src/compiler/glsl/glsl_to_nir.h:28:0,
                 from external/mesa/src/compiler/glsl/glsl_to_nir.cpp:28:
external/mesa/src/compiler/nir/nir.h:42:25: fatal error: nir_opcodes.h: No such file or directory
compilation terminated.
build/core/binary.mk:432: recipe for target 'out/target/product/x86/obj/STATIC_LIBRARIES/libmesa_glsl_intermediates/glsl/glsl_to_nir.o' failed
make: *** [out/target/product/x86/obj/STATIC_LIBRARIES/libmesa_glsl_intermediates/glsl/glsl_to_nir.o] Error 1
make: *** Waiting for unfinished jobs....

Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

isl: automake: don't include isl_format_layout.c in two lists.

Including the file in both ISL_FILES and ISL_GENERATED_FILES makes
the actual dependency list less obvious.

v2: Drop unrelated vulkan hunk (Jason).

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

automake: bring back the .PHONY git_sha1.h.tmp rule

With earlier commit 3689ef32afd ("automake: rework the git_sha1.h rule,
include in tarball") we/I erroneously removed the PHONY rule and the
temporary file.

The former is used to ensure that the header is regenerated when on each
make invocation, while the latter helps us avoid the unneeded rebuild(s)
when the SHA1 hasn't changed.

Reported-by: Grazvydas Ignotas <notasas@gmail.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

i965: Add _NEW_POINT to a couple of comments.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

svga: allow copy box in svga_transfer_dma_band()

Instead of just allow copy of a rectangle in svga_transfer_dma_band(),
this patch allows it to copy a box, hence allows copy a 3d texture
in one transfer.

Fixes black screen in running Heaven after commit fb9fe35. (Bug 1663282)

Tested with Heaven, glretrace, piglit.

Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

freedreno: fix bad bitshift warnings

Coverity doesn't realize idx will never be negative.  Throw in some
assert()s to help it out.

(Hopefully assert() isn't getting compiled out for coverity build.. but
there seems to be just one way to find out.  We might have to change
these to assume())

Fixes CID 1362442, 1362443

Signed-off-by: Rob Clark <robclark@freedesktop.org>

freedreno: assume builtin shaders do compile

Maybe we should switch to ureg to build the builtin shaders.  But at any
rate, if they fail to compile it is because someone messed them up (or
changed TGSI syntax?).

CID 1362444

Signed-off-by: Rob Clark <robclark@freedesktop.org>

i965/fs: Reindent emit_zip().

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965/fs: Skip SIMD lowering destination zipping if possible.

Skipping the temporary allocation and copy instructions is easy (just
return dst), but the conditions used to find out whether the copy can
be optimized out safely without breaking the program are rather
complex: The destination must be exactly one component of at most the
execution width of the lowered instruction, and all source regions of
the instruction must be either fully disjoint from the destination or
be aligned with it group by group.

v2: Don't handle partial source-destination overlap for simplicity
    (Jason).  No instruction count regressions with respect to v1 in
    either shader-db or the few FP64 shader_runner test-cases with
    partial overlap I've checked manually.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

blorp: Fix 16x multisample scaled blits

Piglit test ext_framebuffer_multisample_blit_scaled-blit-scaled
(with added 16x sample support) now passes with this patch.

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

meta: Fix indentation in shader code

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Acked-by: Matt Turner <mattst88@gmail.com>

mesa/copyimage: report INVALID_VALUE for missing cube face

The specs says INVALID_VALUE for exceeding dimensions,
which is really what is happening here.

This fixes:
GL45-CTS.copy_image.non_existent_mipmap

Cc: "11.2 12.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Antia Puentes <apuentes@igalia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

mesa/copyimage: fix num samples check to handle renderbuffers.

This test was only happening for textures, but there is
nothing in the spec to say this, so test it for all cases.

This fixes:
GL45-CTS.copy_image.invalid_target

Cc: "11.2 12.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

freedreno/a4xx: silence coverity warning

CID 1362451

Signed-off-by: Rob Clark <robclark@freedesktop.org>

freedreno/a3xx+a4xx: fix potential null ptr deref

Coverity spotted the a3xx case (not sure why not the a4xx).

CID 1362452

Signed-off-by: Rob Clark <robclark@freedesktop.org>

freedreno/ir3: fix coverity warning

CID 1362453

Signed-off-by: Rob Clark <robclark@freedesktop.org>

freedreno/ir3: use nir_shader_get_entrypoint() helper

Should also fix coverity warning: CID 1362454

Signed-off-by: Rob Clark <robclark@freedesktop.org>

freedreno/a4xx: fix incorrect enum type

a4xx has it's own enum, different from a2xx/a3xx.

Spotted by coverity: CID 1362458, 1362459

Signed-off-by: Rob Clark <robclark@freedesktop.org>

freedreno: fix coverity negative array index warning

Never can happen, since query would not have been created in the first
place if pidx(query_type) return negative.  Lets let coverity realize
this.

CID 1362460

Signed-off-by: Rob Clark <robclark@freedesktop.org>

freedreno: fix dereference before null check

ptr can actually never be null so just drop the check.

CID 1362464 (#1 of 1): Dereference before null check (REVERSE_INULL)
check_after_deref: Null-checking ptr suggests that it may be null,
but it has already been dereferenced on all paths leading to the check.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

gallium/util: remove u_staging

Unused, and fixes a couple of coverity warnings: CID 1362171, 1362170

Signed-off-by: Rob Clark <robclark@freedesktop.org>
Acked-by: Marek Olšák <marek.olsak@amd.com>

freedreno/a3xx: only update/emit bordercolor state when needed

Signed-off-by: Rob Clark <robclark@freedesktop.org>

freedreno/a4xx: only update/emit bordercolor state when needed

I noticed in stk that it was contributing to a lot of overhead.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

i965: Add missing types to type_sz().

Coverity warns in multiple places about the potential for division by
zero, caused by this function's default case.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

mesa/extensions: Fix ES1 extension reporting

Commit eda15abd84af575d3bde432e2163e30d743a7c87 , unintentionally
advertised these extensions in ES1 contexts. Undo this error.

Signed-off-by: Nanley Chery <nanley.g.chery@intel.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

egl: Check if API is supported when using eglBindAPI.

According to the EGL specifications before binding an API
we must check whether it's supported first. If not eglBindAPI
should return EGL_FALSE and generate a EGL_BAD_PARAMETER error.

Signed-off-by: Plamena Manolova <plamena.manolova@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

st/osmesa: remove double-write (overwriting)

These two lines have been here since the file was created.
I'm guessing the second one was just for testing during dev, so it's the
one that's going away.

CoverityID: 1296205

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Brian Paul <brianp@vmware.com>

st/vdpau: check for null pointer in get/put bits.

Check for null pointer before accessing arrays in get/put bits
native/YCbCr/Indexed in VdpOutputSurface and VdpVideoSurface.

Signed-off-by: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

radeon/uvd: fix the H264 level for Tonga v2

We support 5.2 for a while now.

v2: we even support 5.2 for H264, 5.1 is for HEVC.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: <mesa-stable@lists.freedesktop.org>

mesa/formatquery: add a comment to clarify INTERNALFORMAT_PREFERRED

The comment clarifies that the driver is called only to try to get
a preferred internalformat, and that it was already checked if the
format is supported or not.

Acked-by: Eduardo Lima <elima@igalia.com>
Acked-by: Antia Puentes <apuentes@igalia.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965/formatquery: remove INTERNALFORMAT_PREFERRED implementation

Right now the implementation only checks if the internalformat is
supported or not. But that implementation is wrong, returning
unsupported for some internalformats. Additionally, checking if
the internalformat is supported or not is already done at mesa/main
before calling the driver hook, so this new check is not needed.

Acked-by: Eduardo Lima <elima@igalia.com>
Acked-by: Antia Puentes <apuentes@igalia.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965/eu: use simd8 when exec_size != EXECUTE_16

Among other thigs, fix a gpu hang when using INTEL_DEBUG=shader_time
for any shader.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>

i965: Remove old CS local ID handling

The old method pushed data for each channels uvec3 data of
gl_LocalInvocationID.

The new method pushes 1 dword of data that is a 'thread local ID'
value. Based on that value, we can generate gl_LocalInvocationIndex
and gl_LocalInvocationID with some calculations.

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965: Enable cross-thread constants and compact local IDs for hsw+

The cross thread constant support appears on Haswell. It allows us to
upload a set of uniform data for all threads without duplicating it
per thread.

One complication is that cross-thread constants are loaded into
registers before per-thread constants. Previously, our local IDs were
loaded before the uniform data and treated as 'payload' data, even
though they were actually pushed into the registers like the other
uniform data.

Therefore, in this patch we simultaneously enable a newer layout where
each thread now uses a single uniform slot for a unique local ID for
the thread. This uniform is handled specially to make sure it is added
last into the uniform push constant registers. This minimizes our
usage of push constant registers, and maximizes our ability to use
cross-thread constants for registers.

To swap from the old to the new layout, we also need to flip some
lowering pass switches to let our driver handle the lowering instead.
We also no longer force thread_local_id_index to -1.

v4:
 * Minimize size of patch that switches from the old local ID layout
   to the new layout (Jason)

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

anv: Support new local ID generation & cross-thread constants

The cross thread constant support appears on Haswell. It allows us to
upload a set of uniform data for all threads without duplicating it
per thread.

We also support per-thread data which allows us to store a per-thread
ID in one of the uniforms that can be used to calculate the
gl_LocalInvocationIndex and gl_LocalInvocationID variables.

v4:
 * Support the old local ID push constant layout as well (Jason)

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965: Support new local ID push constant & cross-thread constants

The cross thread constant support appears on Haswell. It allows us to
upload a set of uniform data for all threads without duplicating it
per thread.

We also support per-thread data which allows us to store a per-thread
ID in one of the uniforms that can be used to calculate the
gl_LocalInvocationIndex and gl_LocalInvocationID variables.

v4:
 * Support the old local ID push constant layout as well (Jason)

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965: Add CS push constant info to brw_cs_prog_data

We need information about push constants in a few places for the GL
driver, and another couple places for the vulkan driver.

When we add support for uploading both a common (cross-thread) set of
push constants, combined with the previous per-thread push constant
data, things are going to get even more complicated. To simplify
things, we add push constant info into the cs prog_data struct.

The cross-thread constant support is added as of Haswell. To support
it we need to make sure all push constants with uniform values are
added to earlier registers. The register that varies per thread and
holds the thread invocation's unique local ID needs to be added last.

For now we add the code that would calculate cross-thread constatn
information for hsw+, but we force it (cross_thread_supported) off
until the other parts of the driver support it.

v4:
 * Support older local ID push constant layout as well. (Jason)

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965: Store number of threads in brw_cs_prog_data

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965: Add nir based intrinsic lowering and thread ID uniform

We add a lowering pass for nir intrinsics. This pass can replace nir
intrinsics with driver specific nir lower code.

We lower the gl_LocalInvocationIndex intrinsic based on a uniform
which is loaded with a thread specific ID.

We also lower the gl_LocalInvocationID based on
gl_LocalInvocationIndex.

v2:
 * Create variable during lowering pass. (Ken)

v3:
 * Don't create a variable, but instead just insert an intrisic call
   to load a uniform from the allocated location. (Jason)

v4:
 * Don't run this pass if thread_local_id_index < 0

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965: Put CS local thread ID uniform in last push register

This thread ID uniform will be used to compute the
gl_LocalInvocationIndex and gl_LocalInvocationID values.

It is important for this uniform to be added in the last push constant
register. fs_visitor::assign_constant_locations is updated to make
sure this happens.

The reason this is important is that the cross-thread push constant
registers are loaded first, and the per-thread push constant registers
are loaded after that. (Broadwell adds another push constant upload
mechanism which reverses this order, but we are ignoring this for
now.)

v2:
 * Add variable in intrinsics lowering pass
 * Make sure the ID is pushed last in assign_constant_locations, and
   that we save a spot for the ID in the push constants

v3:
 * Simplify code based with Jason's suggestions.

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965: Add uniform for a CS thread local base ID

v4:
 * Force thread_local_id_index to -1 for now, and have
   fs_visitor::setup_cs_payload look at thread_local_id_index. This
   enables us to more easily cut over from the old local ID layout to
   the new layout, as suggested by Jason.

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965: Add nir channel_num system value

v2:
 * simd16/32 fixes (curro)

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: Make lowering gl_LocalInvocationIndex optional

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

glsl: Add glsl LowerCsDerivedVariables option

v2:
 * Move lower flag to context constants. (Ken)

Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> (v1)
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965/fs: Copy the offset when lowering logical pull constant sends

This fixes 64 Vulkan CTS tests per gen

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96299
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>

glsl/distance: make sure we use clip dist varying slot for lowered var.

When lowering, we always want to use the clip dist varying.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

winsys/amdgpu: decay max_ib_size over time

So that memory use will eventually decrease again after a temporary peak.

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

winsys/amdgpu: implement IB chaining on the gfx ring

As a consequence, CE IB size never triggers a flush anymore.

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

winsys/amdgpu: consolidate IB size management in amdgpu_ib_finalize

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

radeon/winsys: introduce radeon_winsys_cs_chunk

We will chain multiple chunks together and will keep pointers to the older
chunks to support IB dumping.

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

radeonsi/sid: add packet definitions for IB chaining

While we're at it, add packet printing in si_debug.

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

winsys/amdgpu: start with smaller IBs, growing as necessary

This avoids allocating giant IBs from the outset, especially for CE and DMA.

Since we now limit max_dw only by the size that the buffer happens to be
(which, due to the buffer cache, can be even larger than the rounded-up size
we request), the new function amdgpu_ib_max_submit_dwords controls when we
submit an IB.

With this change, we effectively never flush prematurely due to the CE IB,
after an initial warm-up phase.

v2:
- clean up buffer_size calculation

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

winsys/amdgpu: add amdgpu_ib and amdgpu_cs_from_ib helper functions

The latter function allows getting the containing amdgpu_cs from any IB
(including non-main ones).

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

winsys/amdgpu: extract IB big buffer allocation for re-use

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

winsys/amdgpu: add IB buffer in amdgpu_get_new_ib

Adding the buffer when we start using it for the IB makes the logic for
chaining a bit simpler.

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

gallium/radeon: use cs_check_space throughout

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

radeon/winsys: add cs_check_space

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

winsys/amdgpu: simplify interface of amdgpu_get_new_ib

We'll want to have an amdgpu_cs pointer for future changes.

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

winsys/amdgpu: add amdgpu_cs_has_user_fence

v2: style change

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

i965: Fix isoline reads in scalar TES.

Isolines aren't reversed.  commit 5b2d8c2273c6f fixed this for the vec4
TES backend, but not the scalar one.

Found while debugging GL45-CTS.tessellation_shader.
tessellation_control_to_tessellation_evaluation.gl_tessLevel.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Cc: mesa-stable@lists.freedesktop.org

st/mesa: implement PBO downloads for ReadPixels

v2: require PIPE_CAP_SAMPLER_VIEW_TARGET; technically only needed for some of
    the texture targets, but all hardware that has shader images should also
    have this cap.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: hook up a no-op try_pbo_readpixels

For better bisectability given that the order of some of the fallback tests
in the blit path are rearranged.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: add layer_offset to PBO fragment shader

This will be used to select a slice of a 3D texture.

v2: fix a comment (Marek)

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: create PBO download fragment shaders

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: add PBO download enable bit and fragment shaders

For downloads, the fragment shader must know the source texture target, hence
we may cache multiple fragment shaders.

v2: break long line (Marek)

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: move shareable parts of PBO upload state and draw to st_pbo.c

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: move PBO buffer address calculation to st_pbo.c

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: move PBO upload fs creation to st_pbo.c

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: rename pbo_upload to pbo

At the same time, rename members that are upload-specific to say so.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: move PBO vertex and geometry shader creation to st_pbo.c

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

st/mesa: begin moving PBO functions into their own file

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

gallium/cso: allow saving the first fragment shader image slot

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

gallium/u_inlines: allow NULL src in util_copy_image_view

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>