r600g: add pausing pipeline & streamout queries into set_active_query_state

Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

r600g: implement set_active_query_state for pausing occlusion queries

Use ZPASS_INCREMENT_DISABLE everywhere.

Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

r600g: simplify r600_set_occlusion_query_state

The caller does the same checking.

Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

gallium/radeon: move pipeline stat context flags to common code

Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

r600g: fix typo in r600 register definitions

Acked-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

gallium/radeon: unify checking streamout enable state

Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: fix mask checking when emitting scissors and viewports

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Grigori Goronzy <greg@chown.ath.cx>

radeonsi: implement and rely on set_active_query_state

Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

gallium: pause queries for all meta ops

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

gallium: add pipe_context::set_active_query_state for pausing queries

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: Synchronize a streamout write after read hazard.

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

nv30: Add missing PIPE_SHADER_CAP_INTEGERS to get_shader_param()

Add missing PIPE_SHADER_CAP_INTEGERS for frag shaders to
nv30_screen_get_shader_param().

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>

dri/i965: extend GLES3 sRGB workaround to cover all formats

It is incorrect to assume BGRA byte order for the GLES3 sRGB workaround.

v2: use _mesa_get_srgb_format_linear to handle all formats

Signed-off-by: Haixia Shi <hshi@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

i965: Add autogenerated 'brw_nir_trig_workarounds.c' to gitignore

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

glsl: Update hash table comments in constant propagation

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

softpipe: add SSBO/shader atomics support.

This adds support for the features requires for ARB_shader_storage_buffer_object
and ARB_shader_atomic_counters, ARB_shader_atomic_counter_ops.

[airlied: some cleanups applied]
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

draw: add support for passing buffers to vs/gs shaders.

Like the image code, but for shader buffers this time.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

tgsi: add support for buffer/atomic operations to tgsi_exec.

This adds support for doing load/store/atomic operations on
buffer objects.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

tgsi: set nonhelpermask for vertex shaders

For atomic operations we really need to avoid executing unnecessary shaders, so for some
tests that just draw a single point we only want one vertex to get processed not 4,

this fixes a number of the atomic counters tests.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

nir: Fix typo in comment

Trivial.

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

nir: Merge redudant integer clamping.

Dolphin uses them a lot. Range tracking would be better in the long term,
but this two lines works fine for now.

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

i965: Port INTEL_PRECISE_TRIG=1 to NIR.

This makes the extra multiply visible to NIR's algebraic optimizations
(for constant reassociation) as well as constant folding.  This means
that when the result of sin/cos are multiplied by an constant, we can
eliminate the extra multiply altogether, reducing the cost of the
workaround.

It also means we only have to implement it one place, rather than in
both backends.

This makes INTEL_PRECISE_TRIG=1 cost nothing on GPUTest/Volplosion,
which has a ton of sin() calls, but always multiplies them by an
immediate constant.  The extra multiply gets folded away.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>

i965: Pass brw_compiler into brw_preprocess_nir() instead of is_scalar.

I want to be able to read other fields.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>

nir: Silence unused "options" warning in algebraic passes.

Some passes may not refer to options->..., at which point the compiler
will warn about an unused variable.  Just cast to void unconditionally
to shut it up.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>

nir: Do basic constant reassociation.

Many shaders contain expression trees of the form:

    const_1 * (value * const_2)

Reorganizing these to

    (const_1 * const_2) * value

will allow constant folding to combine the constants.  Sometimes, these
constants are 2 and 0.5, so we can remove a multiply altogether.  Other
times, it can create more immediate constants, which can actually hurt.

Finding a good balance here is tricky.  While much more could be done,
this simple patch seems to have a lot of positive benefit while having
a low downside.

shader-db results on Broadwell:

total instructions in shared programs: 8963768 -> 8961369 (-0.03%)
instructions in affected programs: 438318 -> 435919 (-0.55%)
helped: 1502
HURT: 245

total cycles in shared programs: 71527354 -> 71421516 (-0.15%)
cycles in affected programs: 11541788 -> 11435950 (-0.92%)
helped: 3445
HURT: 1224

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>

radeon/uvd: alignment fix for decode message buffer

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

st/mesa: replace _mesa_sysval_to_semantic table with function

Instead of using an array indexed by SYSTEM_VALUE_x, just use a
switch statement.  This fixes a regression caused by inserting new
SYSTEM_VALUE_ enums but not updating the mapping to TGSI semantics.

v2: fix a few switch statement mistakes for compute-related enums

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

nir/lower_system_values: Add support for several computed values

Reviewed-by: Rob Clark <robdclark@gmail.com>

glsl/shader_enums: Add the other two compute builtins

These weren't added before because they are actually calculated values that
are computed from other inputs.  However, in order to handle them in
nir_lower_system_values, it's nice for them to have a cannonical locaiton.

Reviewed-by: Rob Clark <robdclark@gmail.com>

glsl/shader_enums: Add an enum for Vulkan InstanceIndex

In Vulkan, you have InstanceIndex which begins at the base instance value
rather than the zero-based InstanceID of GL.

Reviewed-by: Rob Clark <robdclark@gmail.com>

mesa: add missing header to the tarball

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

drivers/softpipe: add missing header to the tarball

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

mesa: automake: update and reuse X86_SSE41_FILES list

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

compiler: android: flesh out nir into separate makefile

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

compiler: automake: flesh out NIR into separate makefile.

Analogous to previous commit - improved readability at the expense of
an extra file.

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

compiler: automake: split out glsl into separate makefile

Preserve the functionality while keeping the files smaller and
more readable.

v2: Do not include Makefile.sources from the GLSL makefile (silences
automake warnings)

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net> (v1)

compiler: remove {glsl,nir}/Makefile.sources

No longer used as of last commit.

v2: Rebase.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net> (v1)

configure.ac: update the path of the generated files

... in order to determine if we need bison/flex. Failing to locate the
files will lead to mandating bison/flex even when building from a
release tarball.

CC: "11.2" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: move the android build scripts a level up

Analogous to previous commit.

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

glsl: move the scons build script a level up

It will allow us to remove the duplicate glsl/Makefile.sources.

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

Part revert "gallium/auxiliary: don't build NIR sources with MSVC2008 flags"

This reverts commit 41c7912d04111a7e3b75a438c5cbbd7edc0fee25 but leaves
out the pragma [that inspired the original commit].

Building mesa requires MSVC2013 or later, thus we no longer need this.

v2: Use correct include path (src/glsl/nir -> src/compiler/nir)

Conflicts:
src/gallium/auxiliary/Makefile.am

Acked-by: Jason Ekstrand <jason@jlekstrand.net> (v1)

GL3: ARB_shader_image_load_store/size is done for radeonsi also in GLES

Trivial.

docs: fix Coverity URL

tgsi/doc: fix spelling error

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>

nir: add a pass for lowering (un)pack_double_2x32

v2: Undo unintended change to the signature of
    nir_normalize_cubemap_coords (Iago).

v3: Move to compiler/nir (Iago)

v4: Remove Authors from copyright header (Michael Schellenberger)

v5 (Sam):
- Use nir_channel() and nir_ssa_for_alu_src() helpers (Jason)
- Inline lower_double_pack_instr() code into lower_double_pack_block()
  (Jason).
- Initialize nir_builder at lower_double_pack_impl() (Jason).

Signed-off-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: add split versions of (un)pack_double_2x32

v2 (Sam):
- Use uint64 instead of float64 for sources and destinations. (Connor)

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: don't try to scalarize unpack_double_2x32

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: add support for (un)pack_double_2x32

v2 (Sam):
- Use uint64 instead of float64 for sources and destinations. (Connor)

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: add i2d and u2d opcodes

v2:
- Assert supports_int and don't fallback to nir_fmov (Jason)

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: add d2i, d2u, d2b opcodes

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: add support for d2f and f2d

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/glsl_to_nir: set bit_size on ssbo_load result

v2 (Sam):
- Add missing bit_size assignment when ssbo_load destination is a boolean.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/glsl_to_nir: add bit-size info to add_instr()

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/split_var_copies: handle doubles

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/instr_set: handle 64-bit bit-sizes

v2: Revert spurious change in nir_opt_cse.c (Iago)

Signed-off-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: handle doubles in nir_deref_get_const_initializer_load()

v2 (Sam):
- Use proper bitsize value when calling to nir_load_const_instr_create()
  (Jason).

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/print: add support for printing doubles and bitsize

v2:
- Squash the printing doubles related patches into one patch (Sam).

v3:
- Print using PRIx64 format: long is 32-bit on some 32-bit platforms but long
long is basically always 64-bit (Jason).

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/glsl_to_nir: support doubles

v2:
- Don't set sized types to the destination of texture related opcodes.
  (Jason)

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/lower_load_const_to_scalar: support doubles and multiple bit sizes

v2 (Sam):
- Add assert to detect bitsizes differents than 32 and 64 (Jason).

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/lower_to_source_mods: Handle different bit sizes

v2 (Sam):
- Use helper to get base type from nir_alu_type.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: add bit_size info to nir_load_const_instr_create()

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/lower_vec: adapt to different bit sizes

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: add bit_size info to nir_ssa_undef_instr_create()

v2:
- Make the users to give the right bit_sizes as arguments (Jason).

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/locals_to_regs: adapt to different bit sizes

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir/from_ssa: adapt to different bit sizes

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

i965: fix struct type in comment

Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>

nir: Add a pass for gathering various bits of shader info

Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

i965: enable OES_texture_buffer on gen7+

It will only end up getting exposed on gen8+ since it requires GL ES
3.1, but it should be ready to go on gen7 when support for GL ES 3.1 is
completed there.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Tested-by: Kenneth Graunke <kenneth@whitecape.org>

docs: add some missing softpipe entries.

I just forgot these when I added this stuff.

Signed-off-by: Dave Airlie <airlied@redhat.com>

glsl: Don't remove XFB-only varyings.

Consider the case of linking a program with both a vertex and fragment
shader.  The VS may compute output varyings that are intended for
transform feedback, and not read by the fragment shader.

In this case, var->data.is_unmatched_generic_inout will be true,
but we still cannot eliminate the varyings.  We need to also check
!var->data.is_xfb_only.

Fixes failures in ES31-CTS.gpu_shader5.fma_precision_*, which happen
to use transform feedback in a way we apparently hadn't seen before.

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>

i965/disasm: Decode per-slot offsets.

We just never bothered to decode this.

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

i965/disasm: Decode "channel mask present" bit correctly.

Bit 15 means "interleave" for most messages, but for SIMD8 messages it
means "use channel masks".

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

i965/disasm: Simplify the URB opcode printing with ?:.

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

glsl: allow usage of the keyword buffer before GLSL 430 / ESSL 310

The GLSL 4.20 and ESSL 3.00 specs don't list 'buffer' as a reserved
keyword. Make the parser ignore it unless GLSL 4.30 / ESSL 3.10 are
used, or ARB_shader_storage_buffer_objects is enabled.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Cc: mesa-stable@lists.freedesktop.org

nvc0: handle the case where there are no framebuffer attachments

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

nv50,nvc0: support sending string markers down into the command stream

This should hopefully make it a little easier to debug with GL
applications like glretrace and looking at command streams.

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

nv50,nvc0: add invalidate_resource support for buffer resources

Provide a callback to reallocate the underlying storage of a resource so
that it is not bound to any existing fences.

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

vc4: Move FRAG_X/Y/REV_FLAG to a QFILE like VPM or TLB color writes.

This gives us one less set of special instruction generation cases, and
instead just the case for returning the correct register to read.

vc4: Allow TLB Z/color/stencil writes from any ALU operation in QIR.

This lets us write the Z directly from the FTOI for computed Z, and may
let us coalesce color writes in the future.

No change in my shader-db, but clearly drops an instruction in piglit's
early-z test.

vc4: Add a helper function for the construction of qregs.

The separate declaration of the struct is not helping clarity, and I was
going to be writing a whole lot more of these in the upcoming patches.

vc4: Add missing scheduling dependency for MS color writes.

vc4: Drop the multi_instruction distinction for QIR instructions.

It wasn't correctly flagged everywhere, and QPU generation now handles the
only remaining case that was paying attention to it.

No change on shader-db.

vc4: Handle SF on instructions that write r4.

Normal SFU writes couldn't have SF because they were marked as
multi_instruction, but tex_result and tlb_color_read weren't.  This ended
up not being a problem according to anything in shader-db, but it seems
possible.

vc4: Allow multi-instruction QIR nodes to get VPM optimization.

There used to be multi-instruction operations that would use src[] twice,
which is why we couldn't do some optimizations on them.  This is no longer
the case.

total instructions in shared programs: 77973 -> 77969 (-0.01%)
instructions in affected programs:     84 -> 80 (-4.76%)
total estimated cycles in shared programs: 234165 -> 234157 (-0.00%)
estimated cycles in affected programs:     92 -> 84 (-8.70%)

vc4: Switch to using NIR_PASS macros.

This gets us better validation of our NIR transformations.

vc4: Handle nir_intrinsic_load_user_clip_plane as a vec4.

I liked having all my NIR be scalar, but nir_validate() complains that the
intrinsic writes 4 components but the destination we set up was only 1
component.  I could generate a new scalar variant, but it's a lot easier
to just leave it as a vec4.  This doesn't hurt codegen since we GC unused
uniforms, and UCP dot products use all the components anyway.

vc4: Emit a warning and proceed for handling loops in NIR.

We don't really suppor control flow yet, but it's a lot nicer to render
something and warn on stderr than to crash.

Fixes the following piglit tests:
- shaders/complex-loop-analysis-bug
- shaders/glsl-fs-discard-04

Converts the following piglit tests from crash to fail:
- shaders/glsl-fs-continue-inside-do-while
- shaders/glsl-fs-loop
- shaders/glsl-fs-loop-continue
- shaders/glsl-fs-loop-nested
- shaders/glsl-texcoord-array
- shaders/glsl-vs-continue-inside-do-while
- shaders/glsl-vs-loop
- shaders/glsl-vs-loop-continue
- shaders/glsl-vs-loop-nested

No piglit regressions.

v2 (Eric): Add stronger stderr warning.

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

vc4: Add a stub for NIR->QIR of control flow function nodes

We shouldn't have any NIR functions present since all GLSL functions get
inlined, but this would be a more informative error if it does happen.

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

vc4: Add better debug of NIR->QIR control flow graph failure

Ensure NIR control flow graph nodes that are unhandled in QIR
are reported with sufficient verbosity to aid debugging.

This improves piglit outputs, amongst other tools.

There are no other remaining uses of assert(0) as a blunt tool
within vc4.

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

vc4: Remove unused include from vc4_program.c

Found with grep and inspection. Test compiled on RPi hw.
Assists any future effort to remove TGSI as an intermediate stage.

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

glsl: handle unsigned int wraparound in link_shaders()

v2: change check_explicit_uniform_locations() to return an
    unsigned 0 (Timothy Arceri)

We were storing the int result of check_explicit_uniform_locations()
in num_explicit_uniform_locs as an unsigned int which caused it to
be 4294967295 when a -1 was returned.

This in turn would cause the following error during linking:
error: count of uniform locations > MAX_UNIFORM_LOCATIONS(4294967295 > 98304)

Results from running piglit tests/all with this patch
and when ARB_explicit_uniform_location disabled:

changes:     178
fixes:       176
regressions: 2

The two regressions are for the following tests:
glean@glsl1-matrix column check (1)
glean@glsl1-matrix column check (2)
which regress from FAIL to CRASH.

The regressions are acceptable because the tests are currently failing due to
the aforementioned linker error.

Signed-off-by: Lars Hamre <chemecse@gmail.com>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>

i965/tiled_memcopy: Get rid of the direction parameter to get_memcpy

Now that we can use the much simpler rgba8_copy function, we don't need to
hand different functions out based on direction.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Chad Versace <chad.versace@intel.com>

i965/tiled_memcpy: Rework the RGBA -> BGRA mem_copy functions

This splits the two copy functions into three: One for unaligned copies,
one for aligned sources, and one for aligned destinations.  Thanks to the
previous commit, we are now guaranteed that the aligned ones will *only*
operate on aligned memory so they should be safe.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93962
Cc: "11.1 11.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Chad Versace <chad.versace@intel.com>

i965/tiled_memcopy: Add aligned mem_copy parameters to the [de]tiling functions

Each of the [de]tiling functions has three mem_copy calls:

 1) Left edge to tile boundary
 2) Tile boundary to tile boundary in a loop
 3) Tile boundary to right edge

Copies 2 and 3 start at a tile edge so the pointer to tiled memory is
guaranteed to be at least 16-byte aligned.  Copy 1, on the other hand,
starts at some arbitrary place in the tile so it doesn't have any such
alignment guarantees.

Cc: "11.1 11.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Chad Versace <chad.versace@intel.com>

i965: Check eu/subslices are > 0

Now that the check is restricted to gen8+, we should always get back a non-zero
positive value for the EU and subslice counts.

Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

i965: Fix eu/subslice warning

Older gen platforms do not actually return a value for sublice and eu total
(IMO, confusingly) they return -ENODEV. This patch defers the SSEU setup until
we have the actual GPU generation to avoid useless warnings when running on
older platforms with older kernels.

Reported-by: Mark Janes <mark.a.janes@intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

i965: Extract SSEU configuration info

Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

st/mesa: fix glReadBuffer() assertion failure

If the first call in a GL app is glReadPixels(GL_FRONT) we'd fail the
assert(st->ctx->FragmentProgram._Current) at st_atom_shader.c:114 in
update_fp().

This is because we were calling st_validate_state() without first
updating Mesa state with _mesa_update_state().

The regression came from commit 83b589301f4a150f4 "st/mesa: fix
frontbuffer glReadPixels regressions".

The new piglit gl-1.0-simple-readbuffer test exercises this.

Cc: "11.1 11.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

st/va: avoid dereference after free in vlVaDestroyImage

Cc: "11.1 11.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Tested-by: Julien Isorce <j.isorce@samsung.com>

radeonsi: do per-pixel clipping based on viewport states

In other words, vport scissors are derived from viewport states.
If the scissor test is enabled, the intersection of both is used.

The guard band will disable clipping, so we have to clip per-pixel.

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