autotools, meson: bump up required VA version

Due using a new VP9 config we use, required VA API 0.39

Fixes: 413c5ca3727 ("travis: update libva required version")
CC: 18.1 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

docs: update calendar, add news and link release notes to 18.0.2

Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>

docs: add sha256 checksums for 18.0.2

Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>
(cherry picked from commit b3eed3ad03fd1eb61474cd0a8a173ad40fb8a876)

docs: add release notes for 18.0.2

Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>
(cherry picked from commit d38da7bd2d4387635fac8bc7f45e64f50dc43c43)

radeonsi: increase the number of compiler threads depending on the CPU

The compiler queue was limited to 3 threads, so shader-db running
on a 16-thread CPU would have a bottleneck on the 3-thread queue.

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Benedikt Schemmer <ben at besd.de>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: avoid a crash in gallivm_dispose_target_library_info

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Benedikt Schemmer <ben at besd.de>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: move data_layout into si_compiler

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Benedikt Schemmer <ben at besd.de>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: move passmgr into si_compiler

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Benedikt Schemmer <ben at besd.de>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: move target_library_info into si_compiler

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Benedikt Schemmer <ben at besd.de>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: use si_compiler::triple in si_llvm_optimize_module

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Benedikt Schemmer <ben at besd.de>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: add triple into si_compiler

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Benedikt Schemmer <ben at besd.de>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: add struct si_compiler containing LLVMTargetMachineRef

It will contain more variables.

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Benedikt Schemmer <ben at besd.de>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radeonsi: rename r600_texture::resource to buffer

r600_resource could be renamed to si_buffer.

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

radeonsi: use r600_resource() typecast helper

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

radeonsi: remove unused atom parameter from si_atom::emit

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

radeonsi: inline 2 trivial state structures

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

radeonsi: remove function si_init_atom

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

radeonsi: remove si_atom::id

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

radeonsi: don't use an indirect table for state atoms

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

radeonsi: rename r600_atom -> si_atom

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

radeonsi: remove r600_pipe_common.h

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

radeonsi/gfx9: workaround for INTERP with indirect indexing

and clean up the conditions.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Cc: 18.0 18.1 <mesa-stable@lists.freedesktop.org>

radeonsi: rewrite DCC format compatibility checking code

It might be better to use a slow compressed clear when clearing to 1.

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

radeonsi: implement DCC fast clear swizzle constraints more accurately

Reduce swizzle constraints to the ALPHA_IS_ON_MSB constraint and the clear
value of 1.

This significantly changes the DCC fast clear code, and fixes fast clear
for RGB formats without alpha.

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

radeonsi: rename variables and document stuff around DCC fast clear

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

radeonsi: fully enable 2x DCC MSAA for array and non-array textures

The clear code is exactly the same as for 1 sample buffers -
just clear the whole thing.

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

radeonsi: enable fast color clear for level 0 of mipmapped textures on <= VI

GFX9 is more complicated and needs a compute shader that we should just
copy from amdvlk.

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

ac/surface: handle DCC subresource fast clear restriction on VI

v2: require the previous level to be clearable for determining whether
    the last unaligned level is clearable

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

swr/rast: No need to export GetSimdValidIndicesGfx

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

swr/rast: Small editorial changes

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

swr/rast: Use new processor detection mechanism

Use specific avx512 selection mechanism based on avx512er bit instead of
getHostCPUName().  LLVM 6.0.0 has a bug that reports wrong string for KNL
(fixed in 6.0.1).

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

swr/rast: Output rasterizer dir to console since it's process specific

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

swr/rast: Add TranslateGfxAddress for shader

Also add GFX_MEM_CLIENT_SHADER

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

swr/rast: jit PRINT improvements.

Sign-extend integer types to 32bit when specifying "%d" and add new %u
which zero-extends to 32bit. Improves  printing of sub 32bit integer types
(i1 specifically).

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

swr/rast: Fix regressions.

Bump jit cache revision number to force recompile.

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

swr/rast: Cleanup old cruft.

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

swr/rast: Package events.proto with core output

However only if the file exists in DEBUG_OUTPUT_DIR. The expectation is
that AR rasterizerLauncher will start placing it there when launching
a workload (which is in a subsequent checkin)

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

swr/rast: Fix init in EventHandlerWorkerStats

Make sure we initialize variables.

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

swr/rast: Fix return type of VCVTPS2PH.

expecting <8xi16> return.

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

swr/rast: WIP Translation handling

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

swr/rast: Use different handing for stream masks

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

swr/rast: Silence warnings

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

swr/rast: Add support for TexelMask evaluation

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

swr/rast: Internal core change

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

swr/rast: Fix x86 lowering 64-bit float handling

- 64-bit cvt-to-float needs to be explicitly handled
- gathers need the right parameter types to work with doubles

Fixes draw-vertices piglit tests

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

swr/rast: Add some SIMD_T utility functors

VecEqual and VecHash

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

swr/rast: Fix wrong type allocation

ALLOCA pointer elements, not pointers.

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

swr: touch generated files to update timestamp

previous change in generators necessitates this change

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

swr/rast: Fix byte offset for non-indexed draws

for the case when USE_SIMD16_SHADERS == FALSE

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

util/u_queue: fix a deadlock in util_queue_finish

Cc: 18.0 18.1 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

meson: fix race condition revealed by using 0.44

Previously there was a special target that blocked for the generation of
anv_entrypoints.h, with meson 0.44 we don't need this, we can use a new
language feature instead. The problem is that previously that blocking
target would hide a race condition for the generation of another header,
anv_extensions.h. Now the build sometimes fails when anv_extensions.h is
not generated in time.

v2: - clarify the race condition in the commit message (Emil)

CC: Mark Janes <mark.a.janes@intel.com>
Fixes: 92550d9b16d2b295bdac087f31b1fd6d0f808e02
       ("meson: remove workaround for custom target creating .h and .c files")
Signed-off-by: Dylan Baker <dylan.c.baker@intel.com>
Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

bin: force git show to use default pretty setting

I have pretty default to short, which breaks this script.

v2: - Fix both places that don't define a --pretty (Emil)

cc: Juan A. Suarez <jasuarez@igalia.com>
Signed-off-by: Dylan Baker <dylan.c.baker@intel.com>
Reviewed-by: Andres Gomez <agomez@igalia.com> (v1)
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

mesa: add TBO support for GL_EXT_texture_norm16

Earlier plumbing missed interaction with texture buffer objects.

Fixes: 7f467d4f73 "mesa: GL_EXT_texture_norm16 extension plumbing"
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

ac: fix texture query LOD for 1D textures on GFX9

1D textures are allocated as 2D which means we only need
one coordinate for texture query LOD.

Fixes: 625dcbbc456 ("amd/common: pass address components individually to
ac_build_image_intrinsic")
Cc: 18.1 <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

etnaviv: remove not needed includes

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>

etnaviv: remove redundant include

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>

glsl: replace some asserts with unreachable when processing the ast

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

mesa: drop the buffer mode param from the DrawBuffer driver function

No drivers used it.

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

anv/icl: Enable Vulkan on Ice Lake

This patch enables the Vulkan driver on Ice Lake h/w
with added warning about preliminary support.

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>

anv: enable VK_EXT_shader_viewport_index_layer

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

anv/allocator: Don't shrink either end of the block pool

Previously, we only tried to ensure that we didn't shrink either end
below what was already handed out.  However, due to the way we handle
relocations with block pools, we can't shrink the back end at all.  It's
probably best to not shrink in either direction.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105374
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106147
Tested-by: Eero Tamminen <eero.t.tamminen@intel.com>
Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>
Cc: mesa-stable@lists.freedesktop.org

broadcom/vc5: Add support for centroid varyings.

It would be nice to share the flags packet emit logic with flat shade
flags, but I couldn't come up with a good way while still using our pack
macros.  We need to refactor this to shader record setup at compile time,
anyway.

Fixes ext_framebuffer_multisample-interpolation * centroid-*

broadcom/vc5: Add an assert about GFXH-1559.

Our TF outputs always start at 6 or 7 currently, so we don't hit the
broken 8 case.  Let's make sure that doesn't change somehow.

broadcom/vc5: Add validation that we don't violate GFXH-1633 requirements.

We don't use ldunifa yet, but we will eventually for UBOs.

broadcom/vc5: Add validation that we don't violate GFXH-1625 requirements.

We don't use TMUWT yet, but we will once we do SSBOs.

broadcom/vc5: Implement GFXH-1742 workaround (emit 2 dummy stores on 4.x).

This should fix help with intermittent GPU hangs in tests switching
formats while rendering small frames.  Unfortunately, it didn't help with
the tests I'm having troubles with.

broadcom/vc5: Add QPU validation for register writes after thrend.

The next shader gets to start writing the register file during these
slots, so make sure we don't stomp over them.

The only case of hitting this that I could imagine would be dead writes.

st: Choose a 2101010 format for GL_RGB/GL_RGBA with a 2_10_10_10 type.

GLES's GL_EXT_texture_type_2_10_10_10_REV allows uploading this type to an
unsized internalformat, and it should be non-color-renderable.
fbobject.c's implementation of the check for color-renderable is checks
that the texture has a 2101010 mesa format, so make sure that we have
chosen a 2101010 format so that check can do what it meant to.

Fixes KHR-GLES3.packed_pixels.pbo_rectangle.rgb on vc5.

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

st/mesa: fix missing setting of _ElementSize in new_draw_rasterpos_stage

With this patch, _ElementSize is initialized along with the rest
of the vertex array attributes in new_draw_rasterpos_stage().
This fixes a crash in st_pipe_vertex_format() when running
topogun-1.06-orc-84k-resize trace file with VMware svga driver.

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

st/va: Fix typos

s/attibute/attribute/
s/suface/surface/

v2: rebased(Leo)

Reviewed-by: Leo Liu <leo.liu@amd.com>

st/va: Fix potential buffer overread

VASurfaceAttribExternalBuffers.pitches is indexed by
plane. Current implementation only supports single plane layout.

Reviewed-by: Kristian H. Kristensen <hoegsberg@chromium.org>
Reviewed-by: Leo Liu <leo.liu@amd.com>

radeon/vcn: fix mpeg4 msg buffer settings

Previous bit-fields assignments are incorrect and will result certain mpeg4
decode failed due to wrong flag values. This patch fixes these assignments.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>

radeon: Drop broken front_buffer_reading/drawing optimization

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Acked-by: Timothy Arceri <tarceri@itsqueeze.com>

radeon: Use _mesa_is_front_buffer_drawing

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Acked-by: Timothy Arceri <tarceri@itsqueeze.com>

radv: set ac_surf_info::num_channels correctly

num_channels has been introduced since "ac/surface: don't set
the display flag for obviously unsupported cases".

Based on RadeonSI.

Fixes: e29facff315 ("ac/surface: don't set the display flag for obviously unsupported cases (v2)")
Cc: 18.1 <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

radv: fix DCC enablement since partial MSAA implementation

dcc_msaa_allowed is always false on GFX9+ and only true on VI
if RADV_PERFTEST=dccmsaa is set. This means DCC was disabled
in some situations where it should not.

This is likely going to fix a performance regression.

Fixes: 2f63b3dd09 ("radv: enable DCC for MSAA 2x textures on VI under an option")
Cc: 18.1 <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

nir/opt_constant_folding: fix folding of 8 and 16 bit ints

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: print 8 and 16 bit constants correctly

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: support converting to 8-bit integers in nir_type_conversion_op

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

spirv: Don’t check for NaN for most OpFOrd* comparisons

For all of the OpFOrd* comparisons except OpFOrdNotEqual the hardware
should probably already return false if one of the operands is NaN so
we don’t need to have an explicit check for it. This seems to at least
work on Intel hardware. This should reduce the number of instructions
generated for the most common comparisons.

For what it’s worth, the original code to handle this was added in
e062eb6415de3a. The commit message for that says that it was to fix
some CTS tests for OpFUnord* opcodes. Even if the hardware doesn’t
handle NaNs this patch shouldn’t affect those tests. At any rate they
have since been moved out of the mustpass list. Incidentally those
tests fail on the nvidia proprietary driver so it doesn’t seem like
handling NaNs correctly is a priority.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

Intel: Add a Kaby Lake PCI ID

v2: Branding changed

Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
Reviewed-by: Rafael Antognolli <rafael.antognolli@intel.com>

gallium/util: Fix incorrect refcounting of separate stencil.

The driver may have a reference on the separate stencil buffer for some
reason (like an unflushed job using it), so we can't directly free the
resource and should instead just decrement the refcount that we own.
Fixes double-free in KHR-GLES3.packed_depth_stencil.blit.depth32f_stencil8
on vc5.

Fixes: e94eb5e6000e ("gallium/util: add u_transfer_helper")
Reviewed-by: Rob Clark <robdclark@gmail.com>

broadcom/vc5: Fix reloads of separate stencil buffers.

Like for stores, we need to emit a separate load_general packet.

broadcom/vc5: Fix cpp of MSAA surfaces on 4.x.

The internal-type-bpp path is for surfaces that get stored in the raw TLB
format.  For 4.x, we're storing MSAA as just 2x width/height at the
original format.

broadcom/vc5: Implement stencil blits using RGBA.

Fixes piglit fbo-depthstencil blit default_fb

broadcom/vc5: Remove leftover vc4 MSAA lowering setup in the FS key.

broadcom/vc5: Fix tile load/store of MSAA surfaces on 4.x.

For single-sample we have to always program SAMPLE_0, but for multisample
we want to store all the samples.

travis: update libva required version

Commit fa328456e8f29 added VP9 config support, but this needs a newer
libva version, 1.7.0 or above.

Fixes: fa328456e8f ("st/va: add VP9 config to enable profile2")
CC: 18.1 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

mesa: GL_EXT_texture_norm16 extension plumbing

Patch enables use of short and unsigned short data for texture uploads,
rendering and reading of framebuffers within the restrictions specified
in GL_EXT_texture_norm16 spec.

Patch also enables those 16bit format layout qualifiers listed in
GL_NV_image_formats that depend on EXT_texture_norm16.

v2: expose extension with dummy_true
    fix layout qualifier map changes (Ilia Mirkin)

v3: use _mesa_has_EXT_texture_norm16, other fixes
    and cleanup (Ilia Mirkin)

v4: fix rest of the issues found

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Acked-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

meson: Fix with_intel_vk and with_amd_vk variables

Fixes: 5608d0a2cee "meson: use array type options"
Cc: Dylan Baker <dylan@pnwbakers.com>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>

draw: fix different sign logic when clipping

The logic was flawed, since mul(x,y) will be <= 0 (exactly 0) when
the sign is the same but both numbers are sufficiently small
(if the product is smaller than 2^-128).
This could apparently lead to emitting a sufficient amount of
additional bogus vertices to overflow the allocated array for them,
hitting an assertion (still safe with release builds since we just
aborted clipping after the assertion in this case - I'm however unsure
if this is now really no longer possible, so that code stays).
Not sure if the additional vertices could cause other grief, I didn't
see anything wrong even when hitting the assertion.

Essentially, both +-0 are treated as positive (the vertex is considered
to be inside the clip volume for this plane), so integrate the logic
determining different sign into the branch there.

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

draw: simplify clip null tri logic

Simplifies the logic when to emit null tris (albeit the reasons why we
have to do this remain unclear).
This is strictly just logic simplification, the behavior doesn't change
at all.

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

nvc0/ir: all short immediates are sign-extended, adjust LIMM test

Some analysis suggests that all short immediates are sign-extended. The
insnCanLoad logic already accounted for this, but we could still pick
the wrong form when emitting actual instructions that support both short
and long immediates (with the long form usually having additional
restrictions that insnCanLoad should be aware of).

This also reverses a bunch of commits that had previously "worked
around" this issue in various emitters:

9c63224540ef: gm107/ir: make use of ADD32I for all immediates
83a4f28dc27b: gm107/ir: make use of LOP32I for all immediates
b84c97587b4a: gm107/ir: make use of IMUL32I for all immediates
d30768025a22: gk110/ir: make use of IMUL32I for all immediates

as well as the original import for UMUL in the nvc0 emitter.

Reported-by: Karol Herbst <kherbst@redhat.com>
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Tested-by: Karol Herbst <kherbst@redhat.com>

mesa: call DrawBufferAllocate driver hook in update_framebuffer for windows-system FB

When draw buffers are changed on a bound framebuffer, DrawBufferAllocate()
hook should be called. However, it is missing in update_framebuffer with
window-system framebuffer, in which FB's draw buffer state should match
context state, potentially resulting in a change.

Note: This is needed because gallium delays creating the front buffer,
      i965 works fine without this change.

V2 (Timothy Arceri):
 - Rebased on merged/simplified DrawBuffer driver function
 - Move DrawBuffer call outside fb->ColorDrawBuffer[0] !=
   ctx->Color.DrawBuffer[0] check to make piglit pass.

v3 (Timothy Arceri):
 - Call new DrawBuffaerAllocate() driver function.

Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de> (v2)
Reviewed-by: Brian Paul <brianp@vmware.com> (v2)
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99116

st/mesa: add new driver function DrawBufferAllocate

Unlike some of the classic drivers the st was only using DrawBuffer()
to allocated some buffers on-demand. Creating a separate function
will allow us to call it from update_framebuffer() in the following
patch without regressing some of the older classic drivers.

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

mesa: some C99 tidy ups for framebuffer.c

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

meson: Fix no-rtti in llvm detection

Because I clearly wasn't thinking and clearly didn't do a good job
testing. Sigh

Fixes: c5a97d658ec19cc02719d7f86c1b0715e3d9ffc4
       ("meson: fix builds against LLVM built without rtti")
Signed-off-by: Dylan Baker <dylan.c.baker@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

meson: use new warning function

Instead of emulating it with message.

Signed-off-by: Dylan Baker <dylan.c.baker@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

meson: use array type options

This option type is nice since it involves less converting strings into
lists, and because it validates the values that are provided.

v2: - Set with_any_vk to true if any vulkan driver is built (Eric)

Signed-off-by: Dylan Baker <dylan.c.baker@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

meson: fix builds against LLVM built without rtti

Building without rtti is a frought with peril, but it's something that
autotools supports so we need to support it too.

Since we've moved to version 0.44 as a whole we can use the meson
functionality for accessing random llvm-config options we can check for
rtti and add -fno-rtti to all C++ code accordingly.

Signed-off-by: Dylan Baker <dylan.c.baker@intel.com>