egl: Fix inclusion of egl.h+mesa_glinterop.h

Previously clang would warn about redefinition of typedef EGLDisplay. Avoid
this by adding preprocessor guards to mesa_glinterop.h and including it
after EGL.h is indirectly included.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

radeonsi: don't prefetch VBO descriptors if vertex elements == NULL

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

r600g: don't set up and don't call the fetch shader if there are no VS inputs

i965: Optimize reading the destination type

brw_hw_type_to_reg_type() needs to know only whether the file is
BRW_IMMEDIATE_VALUE or not, which is not a valid file for the
destination. gcc and clang will evaluate __builtin_strcmp() at compile
time, so we can use it to pass a constant file for the destination.

   text    data     bss     dec     hex filename
7816214  346248  420496 8582958  82f72e i965_dri.so before
7816070  346248  420496 8582814  82f69e i965_dri.so after

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Mark brw_hw_type_to_reg_type() as a pure function

   text    data     bss     dec     hex filename
7816886  346248  420496 8583630  82f9ce i965_dri.so before
7816214  346248  420496 8582958  82f72e i965_dri.so after

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Hide the register type hardware encodings

So we stop mixing them with the logical enum.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Stop using hardware register types directly

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Add brw_hw_reg_type_to_letters() and use it in brw_disasm.c

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Move brw_reg_type_letters() as well

And add "to_" to the name for consistency with the other functions in
this file.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Switch to using the logical register types

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Add functions to abstract access to register types

Previously the brw_inst{,_set}_{dst,src0,src1}_reg_type() functions
provided access to the hardware encodings for the register types. We
often mixed these with the logical BRW_REGISTER_TYPE_* enums (which
themselves used to be the hardware format!) with bad results.

With that functionality now available with the hw_ versions (see
previous commit), we now add functions that take the logical
BRW_REGISTER_TYPE_* enums and convert into the hardware format and vice
versa. To do the conversion we also have to provide the file.

Note the asymmetry between the two functions: the new getter reads the
file from the instruction word, and to ensure that is always set the
setter writes both the file and the type.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Rename brw_inst's functions that access the register type

Put hw_ in the name so that it's clear these are the hardware encodings.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Index brw_hw_reg_type_to_size()'s table by logical type

I'll be transitioning everything to use the logical types.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Add a brw_hw_type_to_reg_type() function

Will be used in later commits.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Use a common table to translate logical to hardware types

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Extract functions dealing with register types to separate file

I'm going to encapsulate all of the logic dealing with register types in
this file.

Rename the parameters for the hardware encodings from type -> hw_type at
the same time.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Reverse file/type arguments to register type functions

I think of the initial arguments as "state" and the last as the actual
subject.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Add support for disassembling 64-bit integer immediates

After the last patch converted things into enums, I helpfully got a
compiler warning about these missing from the switch statement.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Use separate enums for register vs immediate types

The hardware encodings often mean different things depending on whether
the source is an immediate.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Reorder brw_reg_type enum values

These vaguely corresponded to the hardware encodings, but that is purely
historical at this point. Reorder them so we stop making things "almost
work" when mixing enums.

The ordering has been closen so that no enum value is the same as a
compatible hardware encoding.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Validate destination restrictions with vector immediates

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Don't let raw-move check be tricked by immediate vector types

UB and B type encodings are the same as UV and VF. Noticed when writing
the following patch.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Only change type of 0.0f to VF if destination stride == 1

The destination stride must be equivalent to a dword if VF is used.

Also, since the only compaction table entires with "i:vf" have the
destination as "r:f" specifically check that the destination is of type
float.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Remove CONT/BREAK from instruction compaction test

These cannot be compacted. A similar mistake was fixed in commit
90eaf01616a8

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Test instruction compaction on all supported Gens

Note that there's no point in testing on G45, since its compaction is
the same as Gen5. Same logic applies to Gen7 variants and low-power
parts.

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Silence signed/unsigned comparison warning

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Move compaction "prepass" into brw_eu_compact.c

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

i965: Mark src inst pointer const in compaction code

Reviewed-by: Scott D Phillips <scott.d.phillips@intel.com>

vulkan: import 1.0.59 headers and xml.

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

Android: Fix LLVM duplicated symbols linking for N and M

Both statically linking libLLVMCore and dynamically linking libLLVM causes
duplicated symbols in gallium_dri.so and it fails to dlopen. We don't
really need to link libLLVMCore, but just need generated headers to be
built first. Dynamically linking to libLLVM instead is enough to do
that. Thanks to Qiang Yu for finding the root cause.

With this change, we can align all versions and just have libLLVM as a
shared lib dependency.

This also requires changes in the M and N versions of LLVM to export the
include paths for libLLVM. AOSP master is okay.

Fixes: 26aee6f4d5a ("Android: rework LLVM build support")
Reported-by: Mauro Rossi <issor.oruam@gmail.com>
Cc: 17.2 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Qiang Yu <Qiang.Yu@amd.com>
Signed-off-by: Rob Herring <robh@kernel.org>

docs: update calendar, add news item and link release notes for 17.1.7

Signed-off-by: Andres Gomez <agomez@igalia.com>

docs: add sha256 checksums for 17.1.7

Signed-off-by: Andres Gomez <agomez@igalia.com>

docs: add release notes for 17.1.7

Signed-off-by: Andres Gomez <agomez@igalia.com>

st/va: add MJPEG for config

To enable MJPEG HW decode

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

st/va: reallocate surface with YUYV stream

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

st/va: detect MJPEG format from bitstream

To find if the format is supported YUYV by sampling factor which
is embedded from bitstream. So we could use this info for buffer
reallocation on the correct format.

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

radeon/uvd: add YUYV format support for target buffer

Make chroma plane optional for YUYV support

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

st/va: reallocate surface when interlaced

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

radeon/video: MJPEG not support stacked video buffers

So we have to detect it for reallocation of de-interlaced buffers

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

st/va: make surface allocate functions more usefully

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

radeon/uvd: reconstruct MJPEG bitstream

The current tier 1 mjpeg firmware only supports at the bitstream
level, the later tier 2 support will be at the buffers level with
newer hardware.

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

st/va: add slice parameter handling for MJPEG

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

st/va: add huffman table handling for MJPEG

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

st/va: add iq matrix handling for MJPEG

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

st/va: add picture parameter handling for MJPEG

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

st/va: add handles for MJPEG Buffers

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

st/va: create decoder for MJPEG format

Mjpeg doesn't need reference

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

st/va: add MJPEG picture to context

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

radeon/video: add MJPEG support

v2: add ASIC and Kernel version check

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

radeon/uvd: add MJPEG support

There is no need of dpb buffer for mjpeg codec

v2: check dpb_size instead of format

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

radeon/uvd: add MJPEG stream type

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

vl: add MJPEG picture description

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

vl: add MJPEG profile and format

v2: move util video change to here

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

radeon/uvd: get the target buffer pitch correct for different format

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

radeonsi: update non-resident bindless descriptors if needed

Only resident bindless descriptors are currently updated and
re-uploaded, this makes sure that the non-resident ones are
also updated.

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>

dri3: Move up fourcc utility function

It will be needed in next patches.

Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

egl: Add dma_buf_import_modifiers for glvnd

Make sure we advertise the new entrypoints to libglvnd's EGL dispatch.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reported-by: Emmanuel Gil Peyrot <emmanuel.peyrot@collabora.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101982
Fixes: 4c412293d0e ("egl: advertise EGL_EXT_image_dma_buf_import_modifiers")

intel/blorp: Adjust intra-tile x when faking rgb with red-only

v2 (Jason): Adjust directly in surf_fake_rgb_with_red()

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101910

CC: mesa-stable@lists.freedesktop.org
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

ac/nir: fixup layer/viewport export for GFX9.

GFX9 moved where the viewport index export goes.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Cc: "17.2" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

i965/bufmgr: s/BO_ALLOC_FOR_RENDER/BO_ALLOC_BUSY/

"Alloc for render" is a terrible name for a flag because it means
basically nothing.  What the flag really does is allocate a busy BO
which someone theorized at one point in time would be more efficient if
you're planning to immediately render to it.  If the flag really means
"alloc a busy BO" we should just call it that.

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

i965/tex: Change the flags type on create_for_teximage

This matches the actual function declaration.

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

mesa: only copy requested compressed teximage cubemap faces

This is analogous to commit 2259b11 which only fixed the regular case

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102308
Signed-off-by: Christoph Haag <haagch+mesadev@frickel.club>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: mesa-stable@lists.freedesktop.org

i965/tex: Don't pass samples to miptree_create_for_teximage

In 76e2f390f9863a35, when Topi switched num_samples from 0 to 1 for
single-sampled, he accidentally switched the last parameter in the call
to miptree_create_for_teximage from 0 to 1 thinking it was num_samples
when it was actually layout_flags.  Switching from 0 to 1 added the
MIPTREE_LAYOUT_ACCELERATED_UPLOAD flag which causes us to allocate a
busy BO instead of an idle one.  This caused the subsequent CPU upload
to consistently stall.  The end result was a 15% performance drop in the
SynMark v7 DrvRes microbenchmark.  This restores the old behavior and
fixes the performance regression.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
Fixes: 76e2f390f9863a356d1419982dec705260d67eff
Bugzilla: https://bugs.freedesktop.org/102260
Cc: mesa-stable@lists.freedesktop.org

anv: Use ISL for emitting null surface states.

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

i965: Use ISL for emitting null surface states.

We handle the Sandybridge multisampled 2D surface hack here, rather
than in ISL, because it requires allocating a BO, and is kind of messy.

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

isl: Add a null surface fill function.

ISL already offers functions to fill out most kinds of SURFACE_STATE,
so why not handle null surfaces too?

Null surfaces are simple, so we can just take the dimensions, rather
than an entirte fill structure.

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

i965: Remove tabs in intel_batchbuffer.c.

Our coding style is to use spaces.  Some of this was also messed up
during my bufmgr import series.

(Trivial, just whitespace changes.)

i965/miptree: Return NONE from texture_aux_usage when fully resolved

This little optimization improves the performance of SynMark v7
TexFilterTri by almost 10% on Sky Lake GT4 among other improvements.
We've been doing it for some time but somehow it got dropped during
the miptree refactoring.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Bugzilla: https://bugs.freedesktop.org/102258
Cc: "17.2" <mesa-stable@lists.freedesktop.org>

i965: Stop looking at NewDriverState when emitting 3DSTATE_URB

Looking at NewDriverState is not safe in general.  The state atom system
is set up to ensure that new bits that get added to NewDriverState get
accumulated into the set of bits used when emitting atoms but it doesn't
go the other way.  If we read NewDriverState, we may not get the full
picture because the per-pipeline state (3D or compute) does not get
added to NewDriverState before state emit is done.  It's especially
dangerous to do this from BLORP (either explicitly or implicitly when
BLORP calls gen7_upload_urb) because that does not happen during one of
the normal state upload paths.

This commit solves the problem by whacking all of the per-shader-stage
URB sizes to zero whenever we change the total URB size.  We still have
to flag BRW_NEW_URB_SIZE to ensure that the gen7_urb atom triggers but
the actual decision in gen7_upload_urb can now be based entirely on URB
sizes rather than on state atoms.  This also makes BLORP correct because
it just asks for a new URB config whenever the vsize is too small and so
any change to the total URB size will trigger blorp to re-emit as well
because 0 < vs_entry_size.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Bugzilla: https://bugs.freedesktop.org/102289
Cc: mesa-stable@lists.freedesktop.org

i965: Mark all EGLimages as non-coherent.

EGLimages are shared with external users, and we don't know what they're
going to do with them.  They might scan them out.  They might access
them in a way that doesn't work with our explicit clflushing.

It's safest to simply mark them non-coherent.

Chris Wilson caught this problem and wrote a similar (though less
aggressive) patch to solve it; the miptree code has since undergone
a lot of refactoring so I had to rewrite it.

Cc: "17.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

broadcom/genxml: Add V3D 3.3 packet definitions.

This will be used by the new vc5 gallium driver, and a future Vulkan
driver.

broadcom/genxml: Check the sub-id field when decoding instructions.

VC5 introduces packet variants where the same opcode has behavior that is
decided by a sub-id field in the early bits of the packet.  Keep iterating
over packets until we find the one with the matching sub-id.

broadcom/genxml: Emit code for default headers for structs as well.

In the vc5 NIR backend, I want to use the XML code-generation to set up
pack/unpack of structs for the texture uniforms, and setting up the
unpacked copy needs a default header.

anv: Move a comment that got left behind in the u_vector refactor.

gallium/radeon: remove old_fence parameter from r600_gfx_write_event_eop

just use the new scratch buffer.

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

radeonsi/gfx9: prevent a GPU hang after a timestamp event

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

radeonsi: don't use CLEAR_STATE on SI

This fixes random hangs with Unigine Valley.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102201

Fixes: 064550238ef0 ("radeonsi: use CLEAR_STATE to initialize some registers")
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

Fix build when HAVE_LIBDRM isn't defined

make[4]: Entering directory '/wip/mesa/build/src/gallium/targets/dri'
  CXXLD    gallium_dri.la
../../../../src/gallium/auxiliary/pipe-loader/.libs/libpipe_loader_static.a(libpipe_loader_static_la-pipe_loader.o): In function `pipe_loader_get_driinfo_xml':
/mesa/build/src/gallium/auxiliary/pipe-loader/../../../../../src/gallium/auxiliary/pipe-loader/pipe_loader.c:117: undefined reference to `pipe_loader_drm_get_driinfo_xml'

b4ff5e90 uses pipe_loader_get_driinfo_xml() unconditionally in
pipe_loader.c, but it's definition in pipe_loader_get_driinfo_xml() is only
built if HAVE_LIBDRM.

Arrange to always use the default XML if HAVE_LIBDRM isn't defined.

Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

i965: Fix missing newlines in perf_debug messages.

perf_debug() doesn't append a newline for you.

glsl: add a few missing int64 constant propagation cases

Fixes KHR-GL45.shader_ballot_tests.ShaderBallotAvailability, which
causes some silly swizzles to appear, triggering this optimization to
get hit.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Cc: mesa-stable@lists.freedesktop.org

glsl: set old ldexp operand to NULL when lowering

This fixes an assert during IR validation in LLVMpipe.

Fixes: e2e2c5abd279 (glsl: calculate number of operands in an expression once)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102274
Reviewed-by: Brian Paul <brianp@vmware.com>
Tested-by: Brian Paul <brianp@vmware.com>

intel/isl: Replace switch statements of doom with a macro

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

intel/isl: Reduce header file duplication

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

radv: disable support for VEGA for now.

I'm working on this, but I'm not sure I'll make 17.2 at this stage,
maybe 17.2.1.

Cc: "17.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

glxcmds: Fix a typo in the __APPLE__ codepath

s/DummyContext/dummyContext/

Regressed-in: 5d9b50e596c9d81c37ce0844ae0f8c9da3f6bea6
Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>

llvmpipe: enable PIPE_CAP_QUERY_SO_OVERFLOW

The driver supported this since way before the GL spec for it existed.
Just need to support both the per-stream and for all streams variants
(which are identical due to only supporting 1 stream).
Passes piglit arb_transform_feedback_overflow_query-basic.

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

softpipe: enable PIPE_CAP_QUERY_SO_OVERFLOW

The driver was supposed to support this since way before the GL spec for it
existed, albeit it was apparently broken, so fix and enable it.

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

dri: fix typo in comment

Signed-off-by: Mun Gwan-gyeong <elongbug@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

configure.ac: Check for expat21 if expat is not found.

Fixes build error on CentOS 6.9.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102052
Fixes: 5c007203b73d ("configure.ac: drop manual detection of expat header/library")
Signed-off-by: Vinson Lee <vlee@freedesktop.org>

configure: Check llvm-config --shared-mode

https://bugs.llvm.org/show_bug.cgi?id=6823 still affects current LLVM.
llvm-config --libs only reports the single shared library if LLVM was
built with -DLLVM_LINK_LLVM_DYLIB=ON. llvm-config --shared-mode reports
"shared" in that case, "static" otherwise (even if LLVM was built with
-DLLVM_BUILD_LLVM_DYLIB=ON).

v2: Keep the LLVM < 4.0 test. (llvm-config --shared-mode is actually
    available since LLVM 3.8, but that would make the test too
    complicated :)

Fixes: 3d8da1f678e1 ("configure: Trust LLVM >= 4.0 llvm-config --libs
                      for shared libraries")
Bugzilla: https://bugs.freedesktop.org/102247
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>

loader_dri3: Make sure we have an updated back v3

With GLX_SWAP_COPY_OML and GLX_SWAP_EXCHANGE_OML it may happen in situations
when glXSwapBuffers() is immediately followed by for example another
glXSwapBuffers() or glXCopyBuffers() or back buffer age querying, that we
haven't yet allocated and initialized a new back buffer because there was
no GL rendering in between.

Make sure that we have a back buffer in those situations.

v2: Eliminate the drawable have_back_format member.
v3: Make sure we re-initialize the back even if it exists.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

loader_dri3: Support GLX_SWAP_EXCHANGE_OML

Add support for the exchange swap method. Since we're now forcing a fake front
buffer and we exchange the back and fake front on swaps, we don't need to add
much code.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

loader_dri3: Eliminate the back-to-fake-front copy

Eliminate the back-to-fake-front copy by exchanging the previous back buffer
and the fake front buffer. This is a gain except when we need to preserve
the back buffer content but in that case we still typically gain by replacing
a server-side blit by a client side non-flushing blit.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

loader_dri3: Remove buffer_type from buffer metadata

It's not used anywhere and now that we're about to exchange back- and
fake fronts it doesn't serve a purpose.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

loader_dri3: Support GLX_SWAP_COPY_OML

Support the GLX_SWAP_COPY_OML method. When this method is requested, we use
the same swapbuffer code path as EGL_BUFFER_PRESERVED.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

loader_dri3: Honor the request to preserve back buffer content

EGL uses the force_copy parameter to loader_dri3_swap_buffers_msc() to indicate
that it wants to preserve back buffer contents across a buffer swap.

While the loader then turns off server-side page-flipping there's nothing to
guarantee that a new backbuffer isn't chosen when EGL starts to render again,
and that buffer's content is of course undefined.

So rework the functionality:
If the client supports local blits, allow server-side page flipping and when
a new back is grabbed, if needed, blit the old back's content to the new back.
If the client doesn't support local blits, disallow server-side page-flipping
to avoid a client deadlock and then, when grabbing a new back buffer, sleep
until the old back is idle, which may take a substantial time depending on
swap interval.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

loader_dri3: Increase the likelyhood of reusing the current swap buffer

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

loader_dri3/glx/egl: Optionally use a blit context for blitting operations

The code was relying on us always having a current context for client local
image blit operations. Otherwise the blit would be skipped. However,
glxSwapBuffers, for example, doesn't require a current context and that was a
common problem in the dri1 era. It seems the problem has resurfaced with dri3.

If we don't have a current context when we want to blit, try creating a private
dri context and maintain a context cache of a single context.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

loader_dri3/glx/egl: Remove the loader_dri3_vtable get_dri_screen callback

It's not very usable since in the rare, but definitely existing case that
we don't have a current context, it will return NULL.

Presumably it will always be safe to use the dri screen the drawable was
created with for operations on that drawable.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

nv50/ir: fix TXQ srcMask

src0.x is always read for the LOD, irrespective of which outputs are
read.

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