mesa: add draw_buffer_error() helper

And make draw_buffer() always inline.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glBindTextures()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add bind_textures() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glBindTexture()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add bind_texture() helper

For KHR_no_error support.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: rename bind_texture() to bind_texture_object()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glMemoryBarrierByRegion()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add memory_barrier_by_region() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glMultiDrawArrays()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glMinSampleShading()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add min_sample_shading() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glBlendEquationSeparate()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add blend_equation_separate() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glPrimitiveRestartIndex()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add primitive_restart_index() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glGenerate*Mipmap()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add generate_texture_mipmap_error() helper

And make generate_texture_mipmap() always inline.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glDeleteSamplers()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add delete_samplers() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error to glDeleteVertexArrays()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add delete_vertex_arrays() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error to glBindVertexArray()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add bind_vertex_array() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glInvalidate*()

These are just no-op because we don't actually do anything
useful in the errors path.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glRead*Pixels*()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add read_pixels() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glMultiDraw*Indirect*()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glMultiDrawElementsBaseVertex()

Just skip validation when no_error is enabled.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glVertexArrayBindingDivisor()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glVertexBindingDivisor()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to gl{Create,Gen}VertexArrays()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add gen_vertex_arrays_err() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glTextureStorage*D()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: rename texturestorage() to texturestorage_error()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glTexStorage*D()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: rename texstorage() to texstorage_error()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add texture_storage_error() helper

And make texture_storage always inline.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glBindSampler()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add bind_sampler() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glBindSamplers()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add bind_samplers() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glProgramParameteri()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add program_parameteri() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glDeleteSync()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add delete_sync() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glWaitSync()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add wait_sync() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glTextureView()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add texture_view() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glPatchParameteri()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glBlendEquationiARB()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add blend_equationi() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glSampleMaski()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add sample_maski() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add KHR_no_error support to glDepthRangeArrayv

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

mesa: add depth_range_arrayv() helper

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

dri_interface,egl,gallium: only expose RGBA visuals on Android

X/GLX can't handle them. This removes almost 500 GLX visuals that were
incorrectly exposed.

Add an optional getCapability callback for querying what the loader can do.

I'm not splitting this patch, because it's already too small.

v2: also add the callback to __DRIimageLoaderExtension

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Cc: 17.2 <mesa-stable@lists.freedesktop.org>

radeonsi: expose MRT-draw-calls to HUD

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

mesa: clamp viewport values only once when using glViewport()

It's useless to clamp the same values for all viewports.

+7% in the "viewport change" test (drawoverhead benchmark).

v2: - call clamp_viewport() in all callers of set_viewport_no_notify()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com> (v1)

mesa: make _mesa_check_init_viewport() static

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

gallium: Fix Thomas's email address

Commit 877128505431adaf817dc8069172ebe4a1cdf5d8 misspelled Hellstrom.

i965: s/Tungsten Graphics/VMware/ in brw_bufmgr.c.

In commit 877128505431adaf817dc8069172ebe4a1cdf5d8, José replaced the
Tungsten Graphics copyright notices with VMware, as Tungsten is gone.

I later imported brw_bufmgr.c, reintroducing a Tungsten copyright.
This commit does the equivalent of José's change to the new file.

i965: Reformat the copyright header in brw_bufmgr.c

This reformats the copyright header to match what we use in most of the
newer parts of the driver.  There are a few minor alterations: we change
"COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS" to the standard
"AUTHORS OR COPYRIGHT HOLDERS", and move the permission notice to the
proper place (it should be in the middle, so "next paragraph" actually
refers to something).

Both of these changes match the OSI's MIT License text:
https://opensource.org/licenses/MIT

I copied this from genX_state_upload.c.

radeonsi: update dirty_level_mask only when flushing or unbinding framebuffer

This fixes corruption with bindless textures in Dawn Of War 3.

The do_update_surf_dirtiness mechanism was complicated and dirty_level_mask
was only updated after the first draw call. The problem is bindless textures
are checked for decompression every draw call and we would only decompress
after the first draw call. The solution is to set dirtiness after the last
draw call to the framebuffer, so the (unconditional) decompression of
bindless textures happens at the right time.

Cc: 17.2 <mesa-stable@lists.freedesktop.org>
Tested-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>

Revert "drirc: whitelist glthread for Mount and Blade Warband"

This reverts commit a7617a49fbde2fcfccdab22886aeabdbf8abb8e4.

glthread disables itself automatically and therefore has no effect
on the game.

st/mesa: remove useless st_bufferobj_validate_usage()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

st/mesa: remove st_cache.h

It contains unused prototypes.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

st/glsl_to_tgsi: fix getting the image type for array of structs

Since array splitting for AoA is disabled, we have to retrieve
the type of the first non-array type when an array of images is
declared inside a structure. Otherwise, it will hit an assert
in glsl_type::sampler_index() because it expects either a sampler
or an image type.

This fixes a regression in the following piglit test:
arb_bindless_texture/compiler/images/arrays-of-struct.frag

Fixes: 57165f2ef8 ("glsl: disable array splitting for AoA")
Cc: 17.2 <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

mesa: fix mismatch when returning 64-bit bindless uniform handles

The slower convert-and-copy process performs a bad conversion
because it converts the value to signed 64-bit integer, but
bindless uniform handles are considered unsigned 64-bit.

This fixes "Check glUniform*() with mixed texture units/handles"
from arb_bindless_texture-uniform piglit.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Cc: "17.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

mesa: remove gl_sync_object::Type field

This is useless.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

mesa: drop fence type parameter from NewSyncObject()

This is useless.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

radeonsi: rely on CLEAR_STATE for clearing UCP and blend color registers

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

radeonsi: rely on CLEAR_STATE for resetting the framebuffer and sample mask

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

radeonsi: use CLEAR_STATE to initialize some registers

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

st/mesa: release sampler views when redefining a texture in st_context_teximage

Noticed randomly.

Cc: 17.2 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

radv: for stencil only set Z tile mode index to same value

On SI this was causing a hang in
dEQP-VK.pipeline.render_to_image.core.2d_array.mipmap.r16g16_sint_s8_uint

This was due to not handling the tile mode index for depth like
I fixed previously for new GPUs.

Fixes: 01d0c5a9 (radv: fix stencil regression since new addrlib import)
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

virgl: drop precise modifier.

The host doesn't understand this yet, so drop it for now.

Fixes: virgl regressions.
Fixes: af22adee4f (tgsi: add precise flag to tgsi_instruction)
Signed-off-by: Dave Airlie <airlied@redhat.com>

st/mesa: always unconditionally revalidate main framebuffer after SwapBuffers

This fixes the black Feral launcher window.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101867

Cc: 17.2 <mesa-stable@lists.freedesktop.org>
Tested-by: Edmondo Tommasina <edmondo.tommasina@gmail.com>

radeonsi: bail out instead of crashing if the main shader part failed to compile

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

radeonsi: update a comment for merged shaders

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

radeonsi/gfx9: dump previous stage LLVM IR for merged shaders

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

radeonsi: make sure TCS main output VGPRs don't alias inputs

Avoids an unnecessary move introduce by "radeonsi/gfx9: always wrap GS
and TCS in an if-block (v2)"

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

radeonsi/gfx9: always wrap GS and TCS in an if-block (v2)

With merged ESGS shaders, the GS part of a wave may be empty, and the
hardware gets confused if any GS messages are sent from that wave. Since
S_SENDMSG is executed even when EXEC = 0, we have to wrap even
non-monolithic GS shaders in an if-block, so that the entire shader and
hence the S_SENDMSG instructions are skipped in empty waves.

This change is not required for TCS/HS, but applying it there as well
simplifies the logic a bit.

Fixes GL45-CTS.geometry_shader.rendering.rendering.*

v2: ensure that the TCS epilog doesn't run for non-existing patches

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

radeonsi/gfx9: fix vertex idx in ES with multiple waves per threadgroup

Cc: mesa-stable@lists.freedesktop.org
Reviewed: Marek Olšák <marek.olsak@amd.com>

swr: fix transform feedback logic

The shader that is used to copy vertex data out of the vs/gs shaders to
the user-specified buffer (streamout or SO shader) was not using the
correct offsets.

Adjust the offsets that are used just for the SO shader:
- Make sure that position is handled in the same special way
  as in the vs/gs shaders
- Use the correct offset to be passed in the core
- consolidate register slot mapping logic into one function, since it's
  been calculated in 2 different places (one for calcuating the slot mask,
  and one for the register offsets themselves

Also make room for all attibutes in the backend vertex area.

Fixes:
- all vtk GL2PS tests
- 18 piglit tests (16 ext_transform_feedback tests,
  arb-quads-follow-provoking-vertex and primitive-type gl_points

v2:

- take care of more SGV slots in slot mapping logic
- trim feState.vsVertexSize
- fix GS interface and incorporate GS while calculating vsVertexSize

Note that vsVertexSize is used in the core as the one parameter that
controls vertex size between all stages, so it has to be adjusted appropriately
for the whole vs/gs/fs pipeline.

Also note that GS and SO is not fully implemented.  This will be addressed
later.

fixes:
- fixes total of 20 piglit tests

CC: 17.2 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

swr/rast: non-regex knob fallback code for gcc < 4.9

gcc prior to 4.9 didn't implement <regex>, causing a startup crash
in the swr knob parameter reading code.

CC: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

mesa: check that buffer object is not NULL before initializing it

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>

glsl: small builtin inline tidy up

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>

virgl: encode index buffer offset.

Fixes arb_vertex_buffer_object-combined-vertex-index

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

st/mesa: Fix inversed test in st_api_destroy_drawable

Fixes a drawable leak.

Fixes: bbc29393d3be ("st/mesa: create framebuffer iface hash table per
                      st manager")
Bugzilla: https://bugs.freedesktop.org/101930
Tested-by: Nick Sarnie <commendsarnex@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

radv/ac: port SI TC L1 write corruption fix.

This ports 72e46c988 to radv.
    radeonsi: apply a TC L1 write corruption workaround for SI

Fixes: f4e499ec7 (radv: add initial non-conformant radv vulkan driver)
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/winsys: fix padding command stream for SI

We were adding pad to size after creating the object, so we could
submit a CS bigger than the bo created for it.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

radv/ac: realign SI workaround with radeonsi.

This ports: da7453666ae
radeonsi: don't apply the Z export bug workaround to Hainan
to radv.

Just noticed in passing.

Fixes: f4e499ec7 (radv: add initial non-conformant radv vulkan driver)
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

i965/clear: Don't perform redundant depth clears

We already have this little optimization for color clears.  Now that
we're actually tracking whether or not a slice has any fast-clear
blocks, it's easy enough to add for depth clears too.

Improves performance of GFXBench 4 TRex at 1920x1080 by:
- Skylake GT4: 0.905932% +/- 0.0620197% (n = 30)
- Apollolake:  0.382434% +/- 0.1134730% (n = 25)

v2: (by Ken) Rebase and drop intel_mipmap_tree.c changes, as they're
    no longer necessary (other patches already landed to do that part)

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

i965: Only do depth resolves prior to clearing when needed

When changing the clear value, we need to resolve any fast cleared data.

Previously, we were performing resolves on every slice with HiZ enabled.
We only need to resolve slices that a) have fast clear data, and b)
aren't about to be cleared to the new color.  In the latter case, we
were actually doing a resolve, and then a fast clear - when we could
skip both, causing the existing fast cleared area to be updated to the
new clear value for no additional work.

This patch stops using intel_miptree_prepare_access in favor of a more
optimal open coded loop that knows about our clear operation.

v2: (by Ken) Rebase on islification, write a real commit message.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>

i965: Expose get_num_logical_layers outside of intel_mipmap_tree.c.

I want to use it in brw_clear.c.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>

ac/surface: fix hybrid graphics where APU=GFX9, dGPU=older

v2: don't do it for compressed textures (bpp = 0)

Cc: 17.2 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com> (v1)

radeonsi: decrease the number of compiler threads

Cc: 17.2 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

gallium/radeon: make S_FIXED function signed and move it to shared code

This fixes a bug uncovered by:
    2412c4c81ea0488df865817a0de91ec46e359b72
    util: Make CLAMP turn NaN into MIN.

Cc: 17.2 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

st/mesa: also clamp and quantize per-unit lod bias

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>