intel/gen_decoder: return -1 for unknown command formats

Decoding with aubinator encountered a command of 0xffffffff. With the
previous code, it caused aubinator to jump 255 + 2 dwords to start
decoding again.

Instead we can attempt to detect the known instruction formats. If the
format is not recognized, then we can advance just 1 dword.

v2:
 * Update aubinator_error_decode
 * Actually convert the length variable returned into a *signed* integer
   in aubinator.c, intel_batchbuffer.c and aubinator_error_decode.c.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>

intel/gen_decoder: Fix length for Media State/Object commands

From BDW PRM, Volume 6: Command Stream Programming, 'Render Command
Header Format'.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>

intel/aubinator_error_decode: Fix structure decode data

The call to gen_print_group should provide a pointer to the beginning
of the the structure data, not the start of the batch data.

Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>

st/pbo: select the right swizzle for instance IDs

The system value only has an X component, and radeonsi started
checking that in debug builds.

Reported-by: Michel Dänzer <michel.daenzer@amd.com>
Fixes: 4cf29427770f ("radeonsi: support 64-bit system values")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

anv/query: Busy-wait for available query entries

Before, we were just looking at whether or not the user wanted us to
wait and waiting on the BO.  Some clients, such as the Serious engine,
use a single query pool for hundreds of individual query results where
the writes for those queries may be split across several command
buffers.  In this scenario, the individual query we're looking for may
become available long before the BO is idle so waiting on the query pool
BO to be finished is wasteful. This commit makes us instead busy-loop on
each query until it's available.

This significantly reduces pipeline bubbles and improves performance of
The Talos Principle on medium settings (where the GPU isn't overloaded
with drawing) by around 20% on my SkyLake gt4.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eero Tamminen <eero.t.tamminen@intel.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>

anv/device: Add a helper for querying whether a BO is busy

This is a bit more efficient than using GEM_WAIT with a timeout of 0.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

swr: [rasterizer core] SIMD16 Frontend WIP

Implement widened binner for SIMD16

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

swr: [rasterizer core] Enable 8x2 backend

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

swr: [rasterizer codegen] remove copy of mako

mako is already a mesa build requirement, extra copy not needed.

Tested building against mesa build baseline (mako-0.8.0).

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

swr: [rasterizer core/memory] Move intrinics to _simd functions

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

swr: [rasterizer core] Programmable sample position support

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

swr: [configure.ac/scons] require c++14

New C++ features used by upcoming swr changes.

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

swr: [rasterizer core] Fix center sample pattern

Fix long hidden bug in rasterizer handling of center sample pattern.

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

swr: [rasterizer core/memory] Fix missing avx512 storetile

Fix pre-processor macro handing to eliminate silently missing
implementation for AVX512.

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

swr: [rasterizer core] SIMD16 Frontend WIP

Implement widened VS output for SIMD16

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

mesa: use internal function when deleting buffers

This avoids validation and looking up the buffer target for a second time.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

mesa: rework bind_buffer_object()

This allows internal users to pass buffer objects directly and
allows for KHR_no_error support to be more easily added.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

mesa: small texstate tidy up

Possibly more efficient, either way it makes the code easier to
follow.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

mesa: tidy up renderbuffer RefCount initialisation

42aaa548 changed the renderbuffer initialisation of RefCount from
1 to 0.

This is inconsitent with how we use RefCount elsewhere. Also every
driver implementation of NewRenderbuffer() calls
_mesa_init_renderbuffer() so its safe to set it there.

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

Revert "etnaviv: Cannot render to rb-swapped formats"

This reverts commit 658568941d5e232d690e1ffbcddbd6ea9685693a.

With the help of shader variants we can render to rb-swapped
formats now. Fixes about 60 piglits.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>

etnaviv: add support for rb swap

If we render to rb swapped format we will create a shader variant doing
the involved swizzing in the pixel shader.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>

etnaviv: adapt shader-db output for variant support

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

etnaviv: bring back shader-db traces

If shader-db run, create a standard variant immediately
(as otherwise nothing will trigger the shader to be
actually compiled).

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

etnaviv: add etna_shader_key and generate variants if needed

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>

etnaviv: pass a preallocated variant to compiler

In the long run the compiler needs to know the specifc variant
'key' in order to compile appropriate assembly. With this commit
the variant knows its shader and we are able pass the preallocated
variant into etna_compile_shader(..). This saves us from passing
extra ptrs everywhere.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

etnaviv: make specs const

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>

etnaviv: add struct etna_shader_state

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

etnaviv: add basic shader variant support

This commit adds some basic infrastructure to handle shader
variants. We are still creating exactly one shader variant
for each shader.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

etnaviv: s/etna_shader/etna_shader_variant

Prep work to add shader variant support.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>

etnaviv: remove not needed forward declarations

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>

gallium/util: honour LIBUNWIND_CFLAGS

Fixes: 70c272004f72 ("gallium/util: libunwind support")
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

travis: Add radeonsi to continuous integration

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Acked-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

travis: Add radv vulkan driver to continuous integration

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

anv: provide required gem stubs for the tests

Introduce stubs to anv_gem_stub.c that match the anv_gem.c ones.
Otherwise we may get link-time errors, when building the tests.

v2: Introduce all the missing stubs at once.

Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Vinson Lee <vlee@freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100574
Fixes: c964f0e485d ("anv: Query the kernel for reset status")
Fixes: 651ec926fc1 ("anv: Add support for 48-bit addresses")
Fixes: 060a6434eca ("anv: Advertise larger heap sizes")
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
---
I've intentionally kept the order the same identical to the anv_gem.c.
This way we can easily grep & diff in the future ;-)

configure.ac: pthread-stubs is not a thing on GNU/kFreeBSD

As mentioned on the xcb mailing list, the platform uses the GLIBC
forwarding mechanism.

https://lists.freedesktop.org/archives/xcb/2016-November/010896.html

Cc: Andreas Boll <andreas.boll.dev@gmail.com>
Reported-by: Andreas Boll <andreas.boll.dev@gmail.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

st/clover: Fix build after shrink of pipe_box

Fixes: 3dfe61e ("gallium: decrease the size of pipe_box - 24 -> 16 bytes")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100569
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Tested-by: Vinson Lee <vlee@freedesktop.org>

radeonsi: add new polaris10 pci id

Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: 13.0 17.0 <mesa-stable@lists.freedesktop.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

radeonsi: enable ARB_shader_ballot

Require LLVM 5.0 or later because LLVM 4.0 is easily fooled into
putting the lane select of llvm.amdgcn.readlane into a VGPR and then
fails to continue to compile.

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

radeonsi: optimization barriers to work around LLVM deficiencies

Notably, llvm.amdgcn.readfirstlane and llvm.amdgcn.icmp may be hoisted
out of loops or if/else branches in cases like

  if (cond) {
    v = readFirstInvocationARB(x);
    ... use v ...
  } else {
    v = readFirstInvocationARB(x);
    ... use v ...
  }
===>
  v = readFirstInvocationARB(x);
  if (cond) {
    ... use v ...
  } else {
    ... use v ...
  }

The optimization barrier is a heavy hammer to stop that until LLVM
is taught the semantics of the intrinsic properly.

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

radeonsi: strengthen emit_optimization_barrier

LLVM will lift inline assembly out of if-else-blocks if both paths have
the same inline assembly. Prevent this by adding an irrelevant unique
text to the assembly.

This requires the LLVM assembly parser to be initialized.

Furthermore, allow forcing subsequent computations to happen after the
optimization barrier by defining a data dependency.

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

radeonsi: emit TGSI_OPCODE_READ_*

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

radeonsi: emit TGSI_OPCODE_BALLOT

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

radeonsi: implement TGSI_SEMANTIC_SUBGROUP_*

64-bit system values are stored as v2i32 to simplify the fetch logic.

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

radeonsi: support 64-bit system values

For simplicitly, always store system values as 32-bit values or arrays
of 32-bit values. 64-bit values are unpacked and packed accordingly.

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

radeonsi: bump RADEON_LLVM_MAX_SYSTEM_VALUES

ARB_shader_ballot introduces 7 new system values that can be used
in all shader stages.

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

st/mesa: enable ARB_shader_ballot

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

st/glsl_to_tgsi: implement ARB_shader_ballot system variables

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

st/glsl_to_tgsi: implement ARB_shader_ballot builtin functions

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

tgsi: add SUBGROUP_* semantics

v2: add documentation (Nicolai)

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

tgsi: add BALLOT/READ_* opcodes

v2 (Nicolai):
- BALLOT isn't per-channel
- expand the documentation (also for VOTE_*)

v3:
- only BALLOT returns a 64-bit lanemask (Boyan)
- relax the requirement on READ_INVOC: the invocation number to read
  from must be uniform within a sub-group. This matches the
  GL_ARB_shader_ballot spect (and the v_readlane instruction of AMD
  GCN)

v4:
- hopefully really fix the doc of VOTE_* returns (Ilia)

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com> (v2)

gallium: add PIPE_CAP_TGSI_BALLOT

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

glsl: add gl_SubGroup*ARB builtins

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

glsl: add ARB_shader_ballot builtin functions

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

glsl: add ARB_shader_ballot operations

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

glsl: add ARB_shader_ballot enable

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

mesa: add GL_ARB_shader_ballot boilerplate

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

swr: automake: add gen_common.py to the tarball

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

intel: genxml: automake: include gen_bits_header.py in the tarball

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

intel: genxml: automake: polish automake rules

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

amd/addrlib: automake: add all headers to the tarball

Fixes: 7f160efcde4 ("amd/addrlib: import gfx9 support")
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

radeonsi: enable ARB_sparse_buffer

v2:
- fill in DRM version requirement
- disable on SI due to CP DMA faults

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

radeonsi: disable SDMA clears and copies for sparse buffers

VM faults cannot be disabled for SDMA on <= VI.

We could still use SDMA by asking the winsys about which parts of the
buffers are committed. This is left as a potential future improvement.

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

gallium/radeon: implement pipe->resource_commit

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

gallium/radeon: transfers and invalidation for sparse buffers

Sparse buffers can never be mapped by the CPU.

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

gallium/radeon: implement sparse buffer creation

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

winsys/amdgpu: sparse buffer debugging helpers

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

winsys/amdgpu: take fences when freeing a backing buffer

We never add fences to backing buffers during submit. When we free a
backing buffer, it must inherit the sparse buffer's fences, so that it
doesn't get re-used prematurely via the cache.

v2:
- remove pipe_mutex_*

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

winsys/amdgpu: add sparse buffers to CS

... and implement the corresponding fence handling.

v2:
- add missing bit in amdgpu_bo_is_referenced_by_cs_with_usage
- remove pipe_mutex_*

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

winsys/amdgpu: sparse buffer creation / destruction / commitment

This is the bulk of the buffer allocation logic. It is fairly simple and
stupid. We'll probably want to use e.g. interval trees at some point to
keep track of commitments, but Mesa doesn't have an implementation of those
yet.

v2:
- remove pipe_mutex_*
- fix total_backing_pages accounting
- simplify by using the new VA_OP_CLEAR/REPLACE kernel interface

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

winsys/amdgpu: add sparse buffer data structures

v2:
- remove pipe_mutex_*
- use a simple page commitment array

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

winsys/amdgpu: extend amdgpu_add_fence to allow adding multiple fences

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

winsys/amdgpu: build handles and flags list late on submit thread

This probably has only minor performance effects, but it simplifies some
subsequent code slightly.

Ideally, it could also be used to simplify the handling of slab buffers
in the same way, but unfortunately that's not possible as long as we need
indices for relocations.

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

winsys/amdgpu: share common code in amdgpu_add_fence_dependencies

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

winsys/amdgpu: extract amdgpu_do_add_real_buffer

We will use it for delayed adding of sparse buffers' backing buffers.

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

winsys/radeon: sparse buffers will not be supported

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

radeon/winsys: add sparse buffer interface

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

st/mesa: plumbing for sparse buffers

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

st/mesa: enable ARB_sparse_buffer when supported

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

trace: add resource_commit pass-through

v2: fix return type to bool (Marek)

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

ddebug: add resource_commit pass-through

v2: fix return type to bool (Marek)

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

gallium: add sparse buffer interface and capability

v2:
- explain the resource_commit interface in more detail

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

mesa: implement sparse buffer commitment

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

mesa: implement sparse storage buffer allocation

v2:
- spec quote and style (Ian)

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

mesa: implement SPARSE_BUFFER_PAGE_SIZE_ARB

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

mesa: Add GL_ARB_sparse_buffer boilerplate

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

configure.ac: require libdrm_amdgpu 2.4.77

The sparse buffer implementation requires amdgpu_bo_va_op_raw.

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

mesa: Replace program locks with atomic inc/dec.

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

anv: Advertise larger heap sizes

Instead of just advertising the aperture size, we do something more
intelligent.  On systems with a full 48-bit PPGTT, we can address 100%
of the available system RAM from the GPU.  In order to keep clients from
burning 100% of your available RAM for graphics resources, we have a
nice little heuristic (which has received exactly zero tuning) to keep
things under a reasonable level of control.

Reviewed-by: Kristian H. Kristensen <krh@bitplanet.net>

anv: Add support for 48-bit addresses

This commit adds support for using the full 48-bit address space on
Broadwell and newer hardware.  Thanks to certain limitations, not all
objects can be placed above the 32-bit boundary.  In particular, general
and state base address need to live within 32 bits.  (See also
Wa32bitGeneralStateOffset and Wa32bitInstructionBaseOffset.)  In order
to handle this, we add a supports_48bit_address field to anv_bo and only
set EXEC_OBJECT_SUPPORTS_48B_ADDRESS if that bit is set.  We set the bit
for all client-allocated memory objects but leave it false for
driver-allocated objects.  While this is more conservative than needed,
all driver allocations should easily fit in the first 32 bits of address
space and keeps things simple because we don't have to think about
whether or not any given one of our allocation data structures will be
used in a 48-bit-unsafe way.

Reviewed-by: Kristian H. Kristensen <krh@bitplanet.net>

anv: Replace anv_bo::is_winsys_bo with a uint32_t flags

Reviewed-by: Kristian H. Kristensen <krh@bitplanet.net>

i965/blorp: Align vertex buffers to 64B

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>

anv/blorp: Align vertex buffers to 64B

This fixes issues seen when adding support for full 48-bit addresses.
The 48-bit addresses themselves have nothing to do with it other than
that it caused the kernel to place buffers slightly differently so they
interacted differently with the caches.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>

anv: Query the kernel for reset status

When a client causes a GPU hang (or experiences issues due to a hang in
another client) we want to let it know as soon as possible.  In
particular, if it submits work with a fence and calls vkWaitForFences or
vkQueueQaitIdle and it returns VK_SUCCESS, then the client should be
able to trust the results of that rendering.  In order to provide this
guarantee, we have to ask the kernel for context status in a few key
locations.

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

anv: Check for device loss at the end of WaitForFences

It's possible that the device could have been lost while we were
waiting.  We should let the user know if this has happened.

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

anv/pipeline: Properly handle unset gl_Layer and gl_ViewportIndex

When the shader does not set one of these values, they are supposed to
get a default value of 0.  We have hardware bits in 3DSTATE_CLIP for
this but haven't been setting them.  This fixes the intermittent failure
of dEQP-VK.geometry.layered.3d.render_to_default_layer.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>

i965/fs: Always provide a default LOD of 0 for TXS and TXL

We already provide a default LOD for textureQueryLevels and texture() on
non-fragment stages.  However, there are more cases where one is needed
such as textureSize(gsampler2DMS*) in SPIR-V.  Instead of trying to list
out all of the cases one at a time, just provide the default for all TXS
and TXL operations.  This fixes a shader validation error in the new
Sascha deferredmultisampling demo which uses textureSize(gsampler2DMS).

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100391
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>

mesa: Require mipmap completeness for glCopyImageSubData(), sometimes.

This patch makes glCopyImageSubData require mipmap completeness when the
texture object's built-in sampler object has a mipmapping MinFilter.

Fixes (on i965):
dEQP-GLES31.functional.debug.negative_coverage.*.buffer.copy_image_sub_data

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

libgl-xlib: Link with libunwind.

Fix linking error.

  CXXLD    libGL.la
../../../../src/gallium/auxiliary/.libs/libgallium.a(u_debug_stack.o): In function `debug_backtrace_capture':
src/gallium/auxiliary/util/u_debug_stack.c:59: undefined reference to `_Ux86_64_getcontext'
src/gallium/auxiliary/util/u_debug_stack.c:60: undefined reference to `_ULx86_64_init_local'
src/gallium/auxiliary/util/u_debug_stack.c:62: undefined reference to `_ULx86_64_step'
src/gallium/auxiliary/util/u_debug_stack.c:71: undefined reference to `_ULx86_64_get_proc_info'
src/gallium/auxiliary/util/u_debug_stack.c:73: undefined reference to `_ULx86_64_get_proc_name'
src/gallium/auxiliary/util/u_debug_stack.c:65: undefined reference to `_ULx86_64_step'

Fixes: 70c272004f72 ("gallium/util: libunwind support")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100562
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>

intel/isl: Refactor and clerify gen8 alignment calculations

Adding the actual table from the docs makes it clearer exactly what the
restrictions are.  In particular, it becomes clear that compressed
textures ignore the alignment parameters in RENDER_SURFACE_STATE.

Reviewed-by: Chad Versace <chadversary@chromium.org>

drirc: Set glsl_zero_init for Kerbal Space Program.

This fixes the stripes of garbage rendered on the floor of the vehicle
assembly building among other rendering issues.  The reason for the
misrendering seems to be that some of the GLSL shaders used by the
application use variables before initializing them, incorrectly
assuming that they will be implicitly set to zero by the
implementation.

Acked-by: Matt Turner <mattst88@gmail.com>