freedreno/a3xx: WFI fixes/cleanup

Blob driver seems to need WFI in some cases after CP_EVENT_WRITE,
implying that this is asynchronous and should reset needs_wfi.
Also, CP_INVALIDATE_STATE seems to need WFI.  But CP_LOAD_STATE
does not.

The blob driver also puts WFIs before writing GRAS_CL_VPORT registers.
The latter may be a work-around, as these registers should be banked/
context registers.  I haven't yet found a lockup that this averts, but
I expect viewport to change infrequently so out of paranoia I will
keep these for now.

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

glsl: Add gl_Layer and gl_ViewportIndex builtins to fragment shader

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

glsl: Add builtin define for ARB_fragment_layer_viewport

The spec doesn't actually mention adding this, but this is the usual
pattern so I'm assuming it's a spec bug.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

glsl: Add extension plumbing for ARB_fragment_layer_viewport

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mesa: Add extension plumbing for ARB_fragment_layer_viewport

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

glapi: Add (empty) api section for ARB_fragment_layer_viewport

This extension is purely GLSL -- there are no new GL API elements.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965: Save meta stencil blit programs in the context.

When the last context in a share group is destroyed, the hash table
containing all of the shader programs (ctx->Shared->ShaderObjects) is
destroyed, throwing away all of the shader programs.

Using a static variable to store program IDs ends up holding on to them
after this, so we think we still have a compiled program, when it
actually got destroyed.  _mesa_UseProgram then hits GL errors, since no
program by that ID exists.

Instead, store the program IDs in the context, so we know to recompile
if our context gets destroyed and the application creates another one.

Fixes es3conform tests when run without -minfmt (where it creates
separate contexts for testing each visual).

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77865
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>

scons: avoid building any piece of i915

Leftover from commit c21fca8bf24.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Jakob Bornecrantz <wallbraker@gmail.com>

gallivm: Fix build after LLVM commit 211259

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

glx: Don't crash on swap event for a Window (non-GLXWindow)

Prior to GLX 1.3 there was the glxMakeCurrent() function that took a
single drawable handle. The Drawable could be either a bare XID for a
Window or an XID for a glxpixmap.

GLX 1.3 added glxMakeContextCurrent that takes 2 handles: one for
reading, one for writing. Nowadays the old glxMakeCurrent call is
implemented as a call to glxMakeContextCurrent with the single handle
duplicated.

Because of this it is allowed to use a plain-old Window ID as an
argument to glxMakeContextCurrent, although nobody really documents this
sort of thing. The manpage for the NEW call specifies the arguments as
GLXPixmaps, but the actual code accepts Window XIDs too, and handles
them correctly.

Similarly, the glxSelectEvents function can also take a bare Window XID.

The "piglit" tests all use GLXWindows and/or GLXPixmaps. You never
tested swap events with a bare Window XID. That is what my app was
doing.

The swap_events code worked with Window XIDs in mesa 7.x.y. The new code
added in versions 8, 9, and 10 assumes that all buffer swap events have
a GLXPixmap associated with them. Because of the historical quirks
above, this is not true. Swap events for bare Window XIDs do NOT have a
glxpixmap resulting in a segfault.

Any app that uses the old school glxMakeCurrent call with a Window XID
while trying to use swap_events will crash when the libs try to lookup
the nonexistent GLXPixmap associated with the incoming swap event.

I believe that the people who wrote the spec overlooked this, because
the "sbc" field comes from the OML_sync extension that is defined in
terms of glxpixmaps only.

v2 (idr): Formatting changes.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=54372
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org>

r600g/compute: Use gallium util functions for double lists

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

r600g/compute: Map only against intermediate buffers

With this we can assure that mapped buffers will never change
its position when relocating the pool.

This patch should finally solve the mapping bug.

v2: Use the new is_item_in_pool util function,
    as suggested by Tom Stellard

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

r600g/compute: Implement compute_memory_demote_item

This function will be used when we want to map an item
that it's already in the pool.

v2: Use temporary variables to avoid so many castings in functions,
    as suggested by Tom Stellard

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

r600g/compute: Avoid problems when promoting items mapped for reading

Acording to the OpenCL spec, it is possible to have a buffer mapped
for reading and at read from it using commands or buffers.

With this we can keep the mapping (that exists against the
temporary item) and read with a kernel (from the item we have
just added to the pool) without problems.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

r600g/compute: Only move to the pool the buffers marked for promoting

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

r600g/compute: divide the item list in two

Now we will have a list with the items that are in the pool
(item_list) and the items that are outside it (unallocated_list)

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

r600g/compute: Add statuses to the compute_memory_items

These statuses will help track whether the items are mapped
or if they should be promoted to or demoted from the pool

v2: Use the new is_item_in_pool util function,
    as suggested by Tom Stellard

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

r600g/compute: Add an util function to know if an item is in the pool

Every item that has been placed in the pool must have start_in_dw
different from -1.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

r600g/compute: Add an intermediate resource for OpenCL buffers

This patch changes completely the way buffers are added to the
compute_memory_pool. Before this, whenever we were going to
map a buffer or write to or read from it, it would get placed
into the pool. Now, every unallocated buffer has its own
r600_resource until it is allocated in the pool.

NOTE: This patch also increase the GPU memory usage at the moment
of putting every buffer in it's place. More or less, the memory
usage is ~2x(sum of every buffer size)

v2: Cleanup

v3: Use temporary variables to avoid so many castings in functions,
    as suggested by Tom Stellard

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

mesa: Copy Geom.UsesEndPrimitive when cloning a geometry program.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org>

mesa: Init Geom.UsesEndPrimitive in shader programs.

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

glsl: Optimize (v.x + v.y) + (v.z + v.w) into dot(v, 1.0).

Cuts five instructions out of SynMark's Gl32VSInstancing benchmark.

glsl: Pass in options to do_algebraic().

Will be used in the next commit.

Reviewed-by: Eric Anholt <eric@anholt.net>

glsl: Rebalance expression trees that are reduction operations.

The intention of this pass was to give us better instruction scheduling
opportunities, but it unexpectedly reduced some instruction counts as
well:

total instructions in shared programs: 1666639 -> 1666073 (-0.03%)
instructions in affected programs:     54612 -> 54046 (-1.04%)
(and trades 4 SIMD16 programs in SS3)

automake: include the libdeps in the correct order

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80254
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

clover: Calculate the serialized size of a module efficiently.

Tested-by: Tom Stellard <thomas.stellard@amd.com>

clover: Optimize module serialization for vectors of fundamental types.

Tested-by: Tom Stellard <thomas.stellard@amd.com>

gallivm: set mcpu when initializing llvm execution engine

Previously llvm detected cpu features automatically when the execution engine
was created (based on host cpu). This is no longer the case, which meant llvm
was then not able to emit some of the intrinsics we used as we didn't specify
any sse attributes (only on avx supporting systems this was not a problem since
despite at least some llvm versions enabling it anyway we always set this
manually). So, instead of trying to figure out which MAttrs to set just set
MCPU.

This fixes https://bugs.freedesktop.org/show_bug.cgi?id=77493.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Tested-by: Vinson Lee <vlee@freedesktop.org>

clover: Don't use llvm's global context

An LLVMContext should only be accessed by a single and using the global
context was causing crashes in multi-threaded environments.  Now we use
a separate context for each compile.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
CC: "10.1 10.2" <mesa-stable@lists.freedesktop.org>

clover: Prevent Clang from printing number of errors and warnings to stderr.

https://bugs.freedesktop.org/show_bug.cgi?id=78581

CC: "10.1 10.2" <mesa-stable@lists.freedesktop.org>

radeon/llvm: Adapt to AMDGPU.rsq intrinsic change in LLVM 3.5

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>

configure: add HAVE_GALLIUM_STATIC_TARGETS

Will be used to control the linking mode of pipe-drivers
in gallium targets.

Keep this hardcoded to static, as the pipe-drivers bare
an unstable interface which we do not want to expose to
the normal user.

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

targets: use GALLIUM_PIPE_LOADER_WINSYS_LIB_DEPS

Drop ~50 lines of buildsystem mayhem.

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

automake: introduce helper variable

- gallium_pipe_loader_winsys_libs

Will be used in upcomming commits to reduce duplication
in the build.

v2: Drop the megadriver/static_target variables.

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

target-helpers: add dd_configuration(), dd_driver_name()

Add a couple of helpers to be used by the dri targets when
built with static pipe-drivers. Both functions provide
functionality required by the dri state-tracker.

With this patch ilo, nouveau and r300 gain support for
throttle dri configuration.

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

target-helpers: add dd_create_screen() helper

Will be used by gallium targets that statically link the
pipe-drivers in the final library. Provides identical
functionality to device_descriptor.create_screan.

v2:
 - Don't sw_screen_wrap the i915/svga screen.

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

target-helpers: add a note about debug wrappers

If memory serves me right, at least one debug wrapper does
not return the base screen on failure.

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

targets/pipe-loader: add driver specific drm_configuration

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

pipe-loader: add pipe_loader_ops::configuration()

Required for the dri state-tracker. Will be used to retrieve
driver specific configuration parameters:
 - share_fd (dmabuf) capability
 - throttle

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

pipe-loader: note that we leak pipe_loader_drm_device->base->driver_name

The string is malloc'd (strdup) in loader_get_driver_for_fd().

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

automake: stop building i915-sw and drop explicit linking to softpipe

Unused and possibly broken. Will be completely removed in
upcomming commits.

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

nv30: hack to avoid errors on unexpected color/zeta combinations

This is just a hack, it should be possible to create a temporary zeta
surface and render to that instead. However that's more complicated and
this avoids the render being entirely broken and errors being reported
by the card.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>

nv30: tidy screen caps, add missing ones

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

nv30: avoid dangling references to deleted contexts

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>

nv30: plug some memory leaks on screen destroy and shader compile

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>

nv50: organize screen caps

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

nvc0: organize screen caps

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

nvc0: remove vport_int hack and instead use the usual state validation

Commit ad4dc772 fixed an issue with the viewport not being restored
correctly. However it's rather hackish and confusing. Instead just mark
the viewport dirty and let the viewport validation take care of it.

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

r300g: don't advertize PIPE_FORMAT_B10G10R10X2_UNORM on < r500

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>

radeonsi: implement ARB_texture_query_lod

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

radeonsi: pass ARB_conservative_depth parameters to the hardware

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

gallium: implement ARB_texture_query_levels

The extension is always supported if GLSL 1.30 is supported.

Softpipe and llvmpipe support is also added (trivial).
Radeon and nouveau support is already done.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>

st/mesa: set sampler_view::last_level correctly

It was set to pipe_resource::last_level and _MaxLevel was embedded in max_lod,
that's why it worked for ordinary texturing. However, min_lod doesn't have
any effect on texelFetch and textureQueryLevels, so we must still set
last_level correctly.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>

st/mesa: handle array textures in st_texture_image_copy

Marek: also handle cube arrays

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>

radeonsi: cosmetic changes in si_shader.c

reviewed by Michel Dänzer

radeonsi: implement ARB_texture_gather and Gather functions from GLSL 4.00

All ARB_texture_gather and gather-related ARB_gpu_shader5 piglit tests pass.

reviewed by Michel Dänzer

st/mesa: fix geometry shader max texture limit in state validation

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

r600g: fix the max vertex shader input limit

meta: Respect the driver's maximum number of draw buffers

Commit c1c1cf5f9 added infrastructure for saving and restoring draw
buffer state.  However, it universially used MAX_DRAW_BUFFERS, but many
drivers support far fewer than that at limit.  For example, the radeon
and i915 drivers only support 1.  Using MAX_DRAW_BUFFERS causes meta to
generate GL errors.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80115
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Tested-by: Kenneth Graunke <kenneth@whitecape.org> [on Broadwell]
Tested-by: jpsinthemix@verizon.net
Cc: "10.2" <mesa-stable@lists.freedesktop.org>

gallivm: fix SCALED -> NORM conversions

Such conversions (which are most likely rather pointless in practice) were
resulting in shifts with negative shift counts and shifts with counts the same
as the bit width. This was always undefined in llvm, the code generated was
rather horrendous but happened to work.
So make sure such shifts are filtered out and replaced with something that
works (the generated code is still just as horrendous as before).

This fixes lp_test_format, https://bugs.freedesktop.org/show_bug.cgi?id=73846.

v2: prettify by using build context shift helpers.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

mesa: Remove glClear optimization based on drawable size

A drawable size of 0x0 means that we don't have buffers for a drawable yet,
not that we have a zero-sized buffer.  Core mesa shouldn't be optimizing out
drawing based on buffer size, since the draw call could be what triggers
the driver to go and get buffers.  As discussed in the referenced bug report,
the optimization was added as part of a scatter-shot attempt to fix a
different problem.  There's no other example in mesa core of using the
buffer size in this way.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74005
Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mesa: In emit_texenv() type mismatch was forced with typecast

Type mismatch caused random memory to be copied when casted
memory area was smaller than expected type.

Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

radeon/uvd: disable VC-1 simple/main on UVD 2.x

It's about as broken as on later UVD revisions.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66452
Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Christian König <christian.koenig@amd.com>

radeonsi: add sampling of 4:2:2 subsampled textures

This makes 4:2:2 video surfaces work in VDPAU.

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

util/u_format: move utility function from r600g

We need this for radeonsi, and it might be useful for other drivers,
too.

radeon/vce: set number of cpbs based on level

v2: add error check for cpb size 0

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

radeon/vce: implement h264 level support

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

st/omx/enc: implement h264 level support

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

vl: add level interface

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

st/st/omx: fix switch-case indentation in vid_enc.c

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

glx: Add an error message when a direct renderer's createScreen() routine fails
because no matching fbConfigs or visuals could be found.

Nearly all the error cases in *createScreen() issue an error message to diagnose
the failure to initialize before branching to handle_error.  The few remaining
error cases which don't should probably do the same.

(At the moment, it seems this can be triggered in drisw with an X server which
reports definite values for MAX_PBUFFFER_(WIDTH|HEIGHT|SIZE), because those
attributes are checked for an exact match against 0.)

Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

i965/vec4: unit test for copy propagation and writemask

This unit test demonstrates a subtle bug fixed by
4ddf51db6af36736d5d42c1043eeea86e47459ce.

Signed-off-by: Chia-I Wu <olv@lunarg.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

i965/vec4/gs: Silence warning about unused 'success' in release build.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965/disasm: Mark three_source_reg_encoding[] static.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965/blorp: Remove unused 'brw' member.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965/blorp: Mark branch unreachable to silence uninitialized var warning.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965: Silence warning about unused brw in release builds.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965: Mark backend_instruction and bblock_t as structs.

They have to be marked as structs for C code elsewhere. bblock_t is
already defined as a struct, and all of backend_instruction's fields are
public anyway.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965: Use standard SSE intrinsics instead of gcc built-ins.

Let's this file compile with clang.

Reviewed-by: Frank Henigman <fjhenigman@google.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mesa: Remove unused functions from perfomance query code.

Perhaps useful for debugging? Never used otherwise. Added by commit
8cf5bdad.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Petri Latvala <petri.latvala@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mesa: Remove unused extra_EXT_texture_integer.

Unused since commit b6475f94.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mesa: Mark default case unreachable to silence warning.

Warned about 'coord' being undefined in the default case, which is
unreachable.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

egl: Remove unused variable dri_driver_path.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

swrast: Remove unused solve_plane_recip().

Unused since commit 9e8a961d.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

glsl: Remove 'struct' from ir_variable declaration.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

Revert "i965: Add 'wait' instruction support"

This reverts commit 20be3ff57670529a410b30a1008a71e768d08428.

No evidence of ever being used.

i965/fs: Optimize SEL with the same sources into a MOV.

instructions in affected programs:     474 -> 462 (-2.53%)

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

i965/fs: Perform CSE on texture operations.

Helps Unigine Tropics and some (old) gstreamer shaders in shader-db.

instructions in affected programs:     792 -> 744 (-6.06%)

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

i965/fs: Copy propagate from load_payload.

But only into non-load_payload instructions. Otherwise we would prevent
register coalescing from combining identical payloads.

i965/fs: Perform CSE on load_payload instructions if it's not a copy.

Since CSE creates instructions, if we let CSE generate things register
coalescing can't remove, bad things will happen. Only let CSE combine
non-copy load_payloads.

E.g., allow CSE to handle this

   load_payload vgrf4+0, vgrf5, vgrf6

but not this

   load_payload vgrf4+0, vgrf5+0, vgrf5+1

i965/fs: Support register coalescing on LOAD_PAYLOAD operands.

i965/fs: Emit load_payload instead of multiple MOVs for large VGRFs.

i965/fs: Only consider real sources when comparing instructions.

i965/fs: Apply cube map array fixup and restore the payload.

So that we don't have partial writes to a large VGRF. Will be cleaned up
by register coalescing.

i965/fs: Use LOAD_PAYLOAD in emit_texture_gen7().

i965/fs: Lower LOAD_PAYLOAD and clean up.

Clean up with with register_coalesce()/dead_code_eliminate().

i965/fs: Add SHADER_OPCODE_LOAD_PAYLOAD.

Will be used to simplify the handling of large virtual GRFs in SSA form.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

glsl: type check between switch init-expression and case

Patch adds a type check between switch init-expression and case label
and performs a implicit signed->unsigned type conversion when possible.

v2: add GLSL spec reference, do implicit conversion if possible (Matt)

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79724
Reviewed-by: Matt Turner <mattst88@gmail.com>

nv50/ir: Remove NV50_SEMANTIC_VIEWPORTINDEX

Use TGSI_SEMANTIC_VIEWPORT_INDEX for the last consumer.

Signed-off-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

docs: update GL3.txt, relnotes: mark GL_ARB_viewport_array as done for nvc0

Signed-off-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>