platform/upstream/mesa.git
10 years agollvmpipe: fix rast debugging output
Dave Airlie [Mon, 15 Sep 2014 04:41:04 +0000 (14:41 +1000)]
llvmpipe: fix rast debugging output

The triangle_32_ rast functions never made it into the debug output,
confused me for a few seconds.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agoutil: Add big-endian layout for a number of formats.
Richard Sandiford [Mon, 21 Jul 2014 15:32:38 +0000 (16:32 +0100)]
util: Add big-endian layout for a number of formats.

This patch builds on 6c8f547f66e68b495c708f8ffcb67370caa5ffe8 and
previous patches by allowing u_format.csv to specify separate big-endian
and little-endian layouts.  It then uses this to specify the correct layouts
for various depth/stencil formats.  Later patches handle other formats.

To recap, the idea is that u_format.csv lists the channels for an N-byte
value as though it were an N-byte integer.  For little-endian targets
the channels are listed starting at the least-significant bit of the
integer while for big-endian targets the channels are listed starting
at the most-significant bit.  This means that for something like
PIPE_FORMAT_B8G8R8A8_UNORM (blue in first byte of memory, alpha in last
byte of memory) the orders are the same for both endiannesses.  But for
something like PIPE_FORMAT_S8_UINT_Z24_UNORM, where the stencil is in
the least significant byte of a 32-bit integer, there need to be separate
channel definitions for each endianness.

The effect of this patch is to make the affected PIPE_FORMAT_*s have
the same layout as the associated MESA_FORMAT_*s for big-endian.
The MESA_FORMAT_*s are already handled correctly.

Fixes various piglit tests on z.  No regressions on x86_64.

[airlied: squash subsequent patches]
util: Add big-endian layout for 5551 and 565 formats
util: Add big-endian layout for 10/10/10/2 formats
util: Add big-endian layout for 4444 formats
util: Add big-endian layout for 233 format
util: Add big-endian layout for 44 formats

Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agollvmpipe: Fix PIPE_FORMAT_Z32_FLOAT_S8X24_UINT handling for big-endian.
Richard Sandiford [Mon, 21 Jul 2014 15:53:36 +0000 (16:53 +0100)]
llvmpipe: Fix PIPE_FORMAT_Z32_FLOAT_S8X24_UINT handling for big-endian.

llvmpipe treats PIPE_FORMAT_Z32_FLOAT_S8X24_UINT as a bit of a special case,
handling it as two 32-bit pieces rather than a single 64-bit block:

   /* 64bit d/s format is special already extracted 32 bits */
   total_bits = format_desc->block.bits > 32 ? 32 : format_desc->block.bits;

The format_desc describes the whole 64-bit block, so the z shift
will be 32 for big-endian.  But since we're accessing the z channel
as a 32-bit value rather than a 64-bit value, we need to mask the shift
with 31.

Signed-off-by: Richard Sandiford <rsandifo@linux.vnet.ibm.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agogallivm: Fix uses of 2^24
Richard Sandiford [Mon, 21 Jul 2014 15:53:35 +0000 (16:53 +0100)]
gallivm: Fix uses of 2^24

Fallback cases in lp_bld_arit.c used 2^24 to mean "2 to the power 24",
but in C it's "2 xor 24", i.e. 26.  Fixed by using 1<< instead.

Signed-off-by: Richard Sandiford <rsandifo@linux.vnet.ibm.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Cc: "10.2 10.3" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agogallivm: Add SNORM clamping to lp_build_{add, sub}
Richard Sandiford [Mon, 21 Jul 2014 15:53:34 +0000 (16:53 +0100)]
gallivm: Add SNORM clamping to lp_build_{add, sub}

...fixing the associated TODO.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Richard Sandiford <rsandifo@linux.vnet.ibm.com>
10 years agogallivm: attach DataLayout to module too, not just pass manager.
Rafael Ávila de Espíndola [Tue, 16 Sep 2014 01:46:02 +0000 (03:46 +0200)]
gallivm: attach DataLayout to module too, not just pass manager.

It looks like it was possible to attach it to both for a long time, however
since llvm r217548 attaching it to just the pass manager is no longer
sufficient and causes bugs (see http://llvm.org/bugs/show_bug.cgi?id=20903).

Tested-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
10 years agogallivm: handle SAMPLE opcode in aos sampling
Roland Scheidegger [Mon, 15 Sep 2014 17:10:10 +0000 (19:10 +0200)]
gallivm: handle SAMPLE opcode in aos sampling

This is just a very limited version, in particular sampler and sampler view
index must be the same. It cannot handle any modifiers neither.
Works much the same as soa version otherwise, to figure out the target we
need to store the sampler view dcls.
While here, also handle (no-op) RET and get rid of a couple bogus deprecated
comments.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
10 years agotgsi: accept offsets for sample opcodes too in the text parser
Roland Scheidegger [Mon, 15 Sep 2014 16:44:57 +0000 (18:44 +0200)]
tgsi: accept offsets for sample opcodes too in the text parser

sample opcodes are a little oddly represented in the opcode_info, since
they don't count as texture instructions - they don't have valid target
information, but they may have offsets (unlike "ordinary" texture
instructions, the texture token may be optional for them).
So just make sure with these opcodes the optional offsets are accepted.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
10 years agotgsi: don't print texture target for sample opcodes
Roland Scheidegger [Fri, 12 Sep 2014 22:29:56 +0000 (00:29 +0200)]
tgsi: don't print texture target for sample opcodes

sample opcodes don't encode a texture target, it would thus always
print UNKNOWN, which is not helpful (and wouldn't parse when giving
back the shader text to tgsi).

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
10 years agovc4: Bump maximum ARB program temporaries to match Intel/AMD.
Eric Anholt [Mon, 15 Sep 2014 20:32:18 +0000 (13:32 -0700)]
vc4: Bump maximum ARB program temporaries to match Intel/AMD.

This query has always been useless, but we could potentially reject
well-formed, runnable programs if we expose a value that's too low.

10 years agovc4: Bump maximum uniforms count to match other drivers.
Eric Anholt [Mon, 15 Sep 2014 20:26:24 +0000 (13:26 -0700)]
vc4: Bump maximum uniforms count to match other drivers.

We don't have any specific limits in the hardware, just like the other
GPUs, so match their behavior.  Fixes minmax_gles2 and several other
piglit tests relying on the specced uniform minmax values.

10 years agovc4: Dynamically allocate the TGSI-to-qreg arrays.
Eric Anholt [Mon, 15 Sep 2014 19:02:43 +0000 (12:02 -0700)]
vc4: Dynamically allocate the TGSI-to-qreg arrays.

Fixes buffer overflows in some piglit tests (which are still failing to
register allocate anyway).

10 years agovc4: Fix memory leaks of struct qinst.
Eric Anholt [Mon, 15 Sep 2014 19:19:28 +0000 (12:19 -0700)]
vc4: Fix memory leaks of struct qinst.

10 years agovc4: Fix memory leaks of some vc4_compile contents.
Eric Anholt [Mon, 15 Sep 2014 19:15:02 +0000 (12:15 -0700)]
vc4: Fix memory leaks of some vc4_compile contents.

10 years agovc4: Reuse the util header instead of defining our own ARRAY_SIZE.
Eric Anholt [Mon, 15 Sep 2014 19:04:32 +0000 (12:04 -0700)]
vc4: Reuse the util header instead of defining our own ARRAY_SIZE.

Fixes redefinition warnings if you end up including this header before
util stuff.

10 years agomesa: move i, j var decls into SWIZZLE_CONVERT_LOOP() macro
Brian Paul [Fri, 12 Sep 2014 16:00:09 +0000 (10:00 -0600)]
mesa: move i, j var decls into SWIZZLE_CONVERT_LOOP() macro

Put macro code in do {} while loop and put semicolons on macro calls
so auto indentation works properly.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
10 years agomesa: break up _mesa_swizzle_and_convert() to reduce compile time
Brian Paul [Fri, 12 Sep 2014 14:31:15 +0000 (08:31 -0600)]
mesa: break up _mesa_swizzle_and_convert() to reduce compile time

This reduces gcc -O3 compile time to 1/4 of what it was on my system.
Reduces MSVC release build time too.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
10 years agoGenerate a warning when not writing gl_Position with GLES.
Kalyan Kondapally [Thu, 11 Sep 2014 03:20:23 +0000 (20:20 -0700)]
Generate a warning when not writing gl_Position with GLES.

With GLES we don't give any kind of warning in case we don't
write to gl_position. This patch makes changes so that we
generate a warning in case of GLES (VER < 300) and an error
in case of GL.

Signed-off-by: Kalyan Kondapally <kalyan.kondapally@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
10 years agomesa: check that uniform exists in glUniform* functions
Tapani Pälli [Fri, 12 Sep 2014 07:36:08 +0000 (10:36 +0300)]
mesa: check that uniform exists in glUniform* functions

Remap table for uniforms may contain empty entries when using explicit
uniform locations. If no active/inactive variable exists with given
location, remap table contains NULL.

v2: move remap table bounds check before existence check (Ian Romanick)

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Tested-by: Erik Faye-Lund <kusmabite@gmail.com> (v1)
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83574

10 years agoilo: clean up 3D/media functions
Chia-I Wu [Mon, 15 Sep 2014 01:09:54 +0000 (09:09 +0800)]
ilo: clean up 3D/media functions

Mostly style changes to set dw[0] directly.

10 years agoilo: fix gen6_3DSTATE_MULTISAMPLE()
Chia-I Wu [Mon, 15 Sep 2014 01:00:26 +0000 (09:00 +0800)]
ilo: fix gen6_3DSTATE_MULTISAMPLE()

There was a typo introduced by 90f4b131fccae3a950864ed9ba15eea8edce915f.

10 years agofreedreno/a3xx: 3d/array textures
Rob Clark [Sat, 13 Sep 2014 12:25:51 +0000 (08:25 -0400)]
freedreno/a3xx: 3d/array textures

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno: update generated headers
Rob Clark [Sat, 13 Sep 2014 02:20:07 +0000 (22:20 -0400)]
freedreno: update generated headers

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agoilo: trust vertex element count more
Chia-I Wu [Sat, 13 Sep 2014 16:15:20 +0000 (00:15 +0800)]
ilo: trust vertex element count more

We might run into ve->count == 0 and last_velement_edgeflag == true in
gen6_3DSTATE_VERTEX_ELEMENTS() when the state tracker sets an invalid
combination of VS and VE (does not seem to happen with st/mesa).  Do not
assume ve->count is positive when last_velement_edgeflag is true.

Reported by Coverity.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
10 years agoilo: simplify src operand gathering in disassembler
Chia-I Wu [Sat, 13 Sep 2014 14:15:46 +0000 (22:15 +0800)]
ilo: simplify src operand gathering in disassembler

Always initialize the operand array to point to src0, src1, and src2.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
10 years agoilo: derive 3-src instructions from the opcode table
Chia-I Wu [Sat, 13 Sep 2014 15:10:42 +0000 (23:10 +0800)]
ilo: derive 3-src instructions from the opcode table

One less switch statement to maintain.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
10 years agonouveau: check for mesa context init failure
Ilia Mirkin [Sat, 13 Sep 2014 15:28:28 +0000 (11:28 -0400)]
nouveau: check for mesa context init failure

Reported by Coverity

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
10 years agonouveau: avoid leaking screen on initialization fail
Ilia Mirkin [Sat, 13 Sep 2014 15:06:17 +0000 (11:06 -0400)]
nouveau: avoid leaking screen on initialization fail

Reported by Coverity

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
10 years agonouveau: change internal variables to avoid conflicts with macro args
Ilia Mirkin [Sat, 13 Sep 2014 14:45:08 +0000 (10:45 -0400)]
nouveau: change internal variables to avoid conflicts with macro args

Reported by Coverity

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2 10.3" <mesa-stable@lists.freedesktop.org>
10 years agoilo: clean up 3DPRIMITIVE functions
Chia-I Wu [Sat, 13 Sep 2014 00:54:41 +0000 (08:54 +0800)]
ilo: clean up 3DPRIMITIVE functions

Add ILO_PRIM_RECTANGLES to replace the rectlist bool.

10 years agoilo: clean up 3D/media common functions
Chia-I Wu [Fri, 12 Sep 2014 17:31:45 +0000 (01:31 +0800)]
ilo: clean up 3D/media common functions

Rename ilo_builder_batch_state_base_address() to gen6_state_base_address() for
consistency and remove unused gen6_STATE_BASE_ADDRESS().  Reorder the code in
gen6_PIPE_CONTROL() a bit.  Finally, some mostly cosmetic changes.

10 years agoilo: move 3D functions to ilo_builder_3d*.h
Chia-I Wu [Fri, 12 Sep 2014 15:44:19 +0000 (23:44 +0800)]
ilo: move 3D functions to ilo_builder_3d*.h

Move functions for the 3D pipeline to the new headers.  We artificially split
the functions into top (vertex processing) and bottom (pixel processing), to
keep the headers at reasonable sizes.

10 years agoilo: move media functions to ilo_builder_media.h
Chia-I Wu [Fri, 12 Sep 2014 15:28:39 +0000 (23:28 +0800)]
ilo: move media functions to ilo_builder_media.h

Move functions for the media pipeline to the new header.

10 years agoilo: move GPE common functions to ilo_builder_render.h
Chia-I Wu [Fri, 12 Sep 2014 15:09:27 +0000 (23:09 +0800)]
ilo: move GPE common functions to ilo_builder_render.h

Move 3D/media common functions to the new header.

10 years agoglsl: Speed up constant folding for swizzles.
Kenneth Graunke [Fri, 12 Sep 2014 22:16:57 +0000 (15:16 -0700)]
glsl: Speed up constant folding for swizzles.

ir_rvalue::constant_expression_value() recursively walks down an IR
tree, attempting to reduce it to a single constant value.  This is
useful when you want to know whether a variable has a constant
expression value at all, and if so, what it is.

The constant folding optimization pass attempts to replace rvalues with
their constant expression value from the bottom up.  That way, we can
optimize subexpressions, and ideally stop as soon as we find a
non-constant subexpression.

In order to obtain the actual value of an expression, the optimization
pass calls constant_expression_value().  But it should only do so if it
knows the value can be combined into a constant.  Otherwise, at each
step of walking back up the tree, it will walk down the tree again, only
to discover what it already knew: it isn't constant.

We properly avoided this call for ir_expression nodes, but not for
ir_swizzle nodes.  This patch fixes that, drastically reducing compile
times on certain shaders where tree grafting has given us huge
expression trees.  It also fixes SuperTuxKart.

Thanks to Iago and Mike for help in tracking this down.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78468
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
10 years agoi965/vec4: Make type_size() return 0 for samplers.
Kenneth Graunke [Fri, 12 Sep 2014 05:07:41 +0000 (22:07 -0700)]
i965/vec4: Make type_size() return 0 for samplers.

The FS backend has always used 0, and the VS backend has always used 1.
I think 1 is just working around other problems, and is incorrect.
Samplers are baked in; nothing uses the UNIFORM register we would
create, and we shouldn't upload any constant values for them.

Fixes ES3-CTS.shaders.struct.uniform.sampler_array_vertex.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Ian Romanick <ian.d.romanick@intel.com>
10 years agoi965: Skip allocating UNIFORM file storage for uniforms of size 0.
Kenneth Graunke [Fri, 12 Sep 2014 05:07:40 +0000 (22:07 -0700)]
i965: Skip allocating UNIFORM file storage for uniforms of size 0.

Samplers take up zero slots and therefore don't exist in the params
array, nor are they included in stage_prog_data->nr_params.  There's no
need to store their size in param_size, as it's only used for dealing
with arrays of "real" uniforms (ones uploaded as shader constants).

We run into all kinds of problems trying to refer to the uniform storage
for variables that don't have uniform storage.  For one, we may use some
other variable's index, or access out of bounds in arrays.  In the FS
backend, our extra 2 * MaxSamplerImageUnits params for texture rectangle
rescaling paper over a lot of problems.  In the VS backend, we claim
samplers take up a slot, which also papers over problems.

Instead, just skip allocating storage for variables that don't have any.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Ian Romanick <ian.d.romanick@intel.com>
10 years agoi965: Separate gl_InstanceID and gl_VertexID uploading.
Kenneth Graunke [Wed, 10 Sep 2014 22:41:40 +0000 (15:41 -0700)]
i965: Separate gl_InstanceID and gl_VertexID uploading.

We always uploaded them together, mostly out of laziness - both required
an additional vertex element.  However, gl_VertexID now also requires an
additional vertex buffer for storing gl_BaseVertex; for non-indirect
draws this also means uploading (a small amount of) data.  This is extra
overhead we don't need if the shader only uses gl_InstanceID.

In particular, our clear shaders currently use gl_InstanceID for doing
layered clears, but don't need gl_VertexID.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "10.3" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Ian Romanick <ian.d.romanick@intel.com>
10 years agoi965: Fix reference counting in new basevertex upload code.
Kenneth Graunke [Wed, 10 Sep 2014 22:41:39 +0000 (15:41 -0700)]
i965: Fix reference counting in new basevertex upload code.

In the non-indirect draw case, we call intel_upload_data to upload
gl_BaseVertex.  It makes brw->draw.draw_params_bo point to the upload
buffer, and increments the upload BO reference count.

So, we need to unreference it when making brw->draw.draw_params_bo point
at something else, or else we'll retain a reference to stale upload
buffers and hold on to them forever.

This also means that the indirect case should increment the reference
count on the indirect draw buffer when making brw->draw.draw_params_bo
point at it.  That way, both paths increment the reference count, so
we can safely unreference it every time.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "10.3" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Ian Romanick <ian.d.romanick@intel.com>
10 years agofreedreno: "fix" problems with excessive flushes
Rob Clark [Fri, 12 Sep 2014 20:52:38 +0000 (16:52 -0400)]
freedreno: "fix" problems with excessive flushes

4f338c9b introduced logic to trigger a flush rather than overflowing
cmdstream buffer.  But the threshold was too low, triggering flushes
where they were not needed.  This caused problems with games like
xonotic.

Part of the problem is that we need to mark all state dirty between
cmdstream submit ioctls, because we cannot rely on state being
preserved across ioctls.  But even with that, there are still some
problems that are still being debugged.  For now:

1) correctly mark all state dirty
2) introduce FD_MESA_DEBUG flush flag to force rendering to be flushed
between each draw, to trigger problems (so that I can debug)
3) use a more reasonable threshold so for normal usecases we don't
trigger the problems

This at least corrects the regression, but there is still more debugging
to do.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agor600g,radeonsi: add debug option which forces DMA for copy_region and blit
Marek Olšák [Sat, 6 Sep 2014 15:07:50 +0000 (17:07 +0200)]
r600g,radeonsi: add debug option which forces DMA for copy_region and blit

10 years agofreedreno/ir3: implement UMUL correctly
Ilia Mirkin [Thu, 11 Sep 2014 17:14:14 +0000 (13:14 -0400)]
freedreno/ir3: implement UMUL correctly

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/ir3: fix UCMP handling
Ilia Mirkin [Thu, 11 Sep 2014 14:32:55 +0000 (10:32 -0400)]
freedreno/ir3: fix UCMP handling

UCMP does not require a compare, only a select.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/ir3: add TXL support
Ilia Mirkin [Wed, 10 Sep 2014 04:59:30 +0000 (00:59 -0400)]
freedreno/ir3: add TXL support

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/ir3: add missing put_dst
Rob Clark [Thu, 11 Sep 2014 15:42:00 +0000 (11:42 -0400)]
freedreno/ir3: add missing put_dst

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/ir3: catch incorrect usage of tmp-dst
Rob Clark [Thu, 11 Sep 2014 15:41:12 +0000 (11:41 -0400)]
freedreno/ir3: catch incorrect usage of tmp-dst

Each get_dst() should have a matching put_dst().  Add a bit of checking
to catch mistakes.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/ir3: use unsigned comparison for UIF
Ilia Mirkin [Wed, 10 Sep 2014 02:52:56 +0000 (22:52 -0400)]
freedreno/ir3: use unsigned comparison for UIF

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/ir3: negate result of USLT/etc
Ilia Mirkin [Wed, 10 Sep 2014 02:52:55 +0000 (22:52 -0400)]
freedreno/ir3: negate result of USLT/etc

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/ir3: add UARL support
Ilia Mirkin [Wed, 10 Sep 2014 02:52:54 +0000 (22:52 -0400)]
freedreno/ir3: add UARL support

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/ir3: INEG operates on src0, not src1
Ilia Mirkin [Wed, 10 Sep 2014 02:52:53 +0000 (22:52 -0400)]
freedreno/ir3: INEG operates on src0, not src1

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/ir3: fix FSLT/etc handling to return 0/-1 instead of 0/1.0
Ilia Mirkin [Wed, 10 Sep 2014 02:52:52 +0000 (22:52 -0400)]
freedreno/ir3: fix FSLT/etc handling to return 0/-1 instead of 0/1.0

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/a3xx: alpha render-target shenanigans
Rob Clark [Fri, 12 Sep 2014 13:01:25 +0000 (09:01 -0400)]
freedreno/a3xx: alpha render-target shenanigans

We need the .w component to end up in .x, since the hw appears to fetch
gl_FragColor starting with the .x coordinate regardless of MRT format.
As long as we are doing this, we might as well throw out the remaining
unneeded components.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agoutil/u_format: add _is_alpha()
Rob Clark [Fri, 12 Sep 2014 12:42:03 +0000 (08:42 -0400)]
util/u_format: add _is_alpha()

Because of render-to-alpha (000x) shenanigans, freedreno needs to do
some special handling when rendering to alpha-only formats.  And I
noticed that while we had _is_luminance(), _is_intensity(), etc, an
_is_alpha() helper was missing.  So fix that.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/a3xx: format fixes
Rob Clark [Wed, 10 Sep 2014 22:51:35 +0000 (18:51 -0400)]
freedreno/a3xx: format fixes

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno: update generated headers
Rob Clark [Wed, 10 Sep 2014 22:50:50 +0000 (18:50 -0400)]
freedreno: update generated headers

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agofreedreno/a3xx: handle rendering to layer != 0
Rob Clark [Wed, 10 Sep 2014 17:44:14 +0000 (13:44 -0400)]
freedreno/a3xx: handle rendering to layer != 0

Signed-off-by: Rob Clark <robclark@freedesktop.org>
10 years agomesa: fix _mesa_free_pipeline_data() use-after-free bug
Brian Paul [Fri, 12 Sep 2014 12:29:04 +0000 (06:29 -0600)]
mesa: fix _mesa_free_pipeline_data() use-after-free bug

Unreference the ctx->_Shader object before we delete all the pipeline
objects in the hash table.  Before, ctx->_Shader could point to freed
memory when _mesa_reference_pipeline_object(ctx, &ctx->_Shader, NULL)
was called.

Fixes crash when exiting the piglit rendezvous_by_location test on
Windows.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
10 years agora: assert against unsigned underflow in q_total
Connor Abbott [Sat, 6 Sep 2014 00:59:32 +0000 (20:59 -0400)]
ra: assert against unsigned underflow in q_total

q_total should never go below 0 (which is why it's defined as unsigned),
and if it does, then something is seriously wrong.

Signed-off-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
10 years agora: note a restriction in the interfence graph API
Connor Abbott [Sat, 6 Sep 2014 00:59:31 +0000 (20:59 -0400)]
ra: note a restriction in the interfence graph API

As noted in the previous commit, this was introduced in
567e2769b81863b6dffdac3826a6b729ce6ea37c ("ra: make the p, q test more
efficient"), but I forgot to mention it.

Signed-off-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
10 years agor300g: set register classes before interferences
Connor Abbott [Sat, 6 Sep 2014 00:59:30 +0000 (20:59 -0400)]
r300g: set register classes before interferences

In commit 567e2769b81863b6dffdac3826a6b729ce6ea37c ("ra: make the p, q
test more efficient") I unknowingly introduced a new requirement to the
register allocator API: the user must set the register class of all
nodes before setting up their interferences, because
ra_add_conflict_list() now uses the classes of the two interfering
nodes. i965 already did this, but r300g was setting up register classes
interleaved with setting up the interference graph. This led to us
calculating the wrong q total, and in certain cases
e78a01d5e6f77e075fe667a0f0ccb10d89c0dd58 (" ra: optimistically color
only one node at a time") made it so that this bug caused a segfault. In
particular, the error occurred if the q total was decremented to 1 below
0 for the last node to be pushed onto the stack.  Since q_total is an
unsigned integer, it overflowed to 0xffffffff, which is what
lowest_q_total happens to be initialzed to. This means that we would
fail the "new_q_total < lowest_q_total" check on line 476 of
register_allocate.c, and so the node would never be pushed onto the
stack, which led to segfaults in ra_select() when we failed to ever give
it a register.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82828
Cc: "10.3" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Connor Abbott <cwabbott0@gmail.com>
Tested-by: Pavel Ondračka <pavel.ondracka@email.cz>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
10 years agogallium/util: add missing u_debug include
Andreas Boll [Fri, 12 Sep 2014 08:11:24 +0000 (10:11 +0200)]
gallium/util: add missing u_debug include

Needed for assert.
Fixes build on BE archs with -Werror=implicit-function-declaration.

In file included from
../../../../../src/gallium/auxiliary/draw/draw_fs.c:30:0:
../../../../../src/gallium/auxiliary/util/u_math.h: In function
'util_memcpy_cpu_to_le32':
../../../../../src/gallium/auxiliary/util/u_math.h:810:4: error:
implicit declaration of function 'assert'
[-Werror=implicit-function-declaration]
    assert(n % 4 == 0);
        ^

Cc: "10.3" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Andreas Boll <andreas.boll.dev@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
10 years agoilo: fix builder size checks for BLT buffer clear/copy
Chia-I Wu [Fri, 12 Sep 2014 06:37:40 +0000 (14:37 +0800)]
ilo: fix builder size checks for BLT buffer clear/copy

In buf_clear_region() and buf_copy_region(), max_cmd_size was set to 0.  If
either of the functions is called and there is not enough space in the
builder, the next ilo_cp_flush() will fail silently in a release build.

Replace magic numbers by size defines in tex_clear_region()/tex_copy_region()
for consistency and readability.

10 years agoilo: reduce BLT function parameters
Chia-I Wu [Fri, 12 Sep 2014 04:20:31 +0000 (12:20 +0800)]
ilo: reduce BLT function parameters

Intruduce gen6_blt_bo and gen6_blt_xy_bo to describe BOs.  In the extreme case
of gen6_XY_SRC_COPY_BLT(), the number of parameters goes down from 18 to 8.

10 years agoilo: clean up BLT functions
Chia-I Wu [Fri, 12 Sep 2014 03:54:36 +0000 (11:54 +0800)]
ilo: clean up BLT functions

Follow the changes for MI functions, but for BLT this time.

10 years agoilo: clean up MI functions
Chia-I Wu [Fri, 12 Sep 2014 03:20:55 +0000 (11:20 +0800)]
ilo: clean up MI functions

With ilo_builder in place, some conventions we had to build commands are no
longer needed.

10 years agoilo: move BLT functions to ilo_builder_blt.h
Chia-I Wu [Fri, 12 Sep 2014 03:47:04 +0000 (11:47 +0800)]
ilo: move BLT functions to ilo_builder_blt.h

Follow the changes for MI functions, but for BLT this time.

10 years agoilo: move MI functions to ilo_builder_mi.h
Chia-I Wu [Fri, 12 Sep 2014 03:11:47 +0000 (11:11 +0800)]
ilo: move MI functions to ilo_builder_mi.h

Have a centralized place for MI functions, and remove the duplicated
gen6_MI_LOAD_REGISTER_IMM().

10 years agoilo: add ILO_DEV_ASSERT()
Chia-I Wu [Fri, 12 Sep 2014 03:06:39 +0000 (11:06 +0800)]
ilo: add ILO_DEV_ASSERT()

It replaces ILO_GPE_VALID_GEN().

10 years agoilo: use an accessor for dev->gen
Chia-I Wu [Fri, 12 Sep 2014 02:55:58 +0000 (10:55 +0800)]
ilo: use an accessor for dev->gen

It should enable us to do specialized builds by making the accessor return a
constant.

10 years agoilo: add GEN_EXTRACT() and GEN_SHIFT32()
Chia-I Wu [Fri, 12 Sep 2014 02:08:31 +0000 (10:08 +0800)]
ilo: add GEN_EXTRACT() and GEN_SHIFT32()

They replace READ() and SET_FIELD() that we have been using.

10 years agoilo: remove ILO_GEN_GET_MAJOR()
Chia-I Wu [Fri, 12 Sep 2014 02:43:42 +0000 (10:43 +0800)]
ilo: remove ILO_GEN_GET_MAJOR()

The last user has gone away.

10 years agoilo: careful with empty fb state in ilo_gpe_set_fb()
Chia-I Wu [Fri, 12 Sep 2014 08:53:48 +0000 (16:53 +0800)]
ilo: careful with empty fb state in ilo_gpe_set_fb()

We cannot pass 0 as the width or height to ilo_gpe_init_view_surface_null().

10 years agonv50,nvc0: enable ARB_texture_view
Ilia Mirkin [Thu, 21 Aug 2014 00:19:38 +0000 (20:19 -0400)]
nv50,nvc0: enable ARB_texture_view

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
10 years agomesa/st: add ARB_texture_view support
Ilia Mirkin [Wed, 20 Aug 2014 06:12:10 +0000 (02:12 -0400)]
mesa/st: add ARB_texture_view support

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
10 years agogallium: add a texture target to sampler view and a CAP to use it
Ilia Mirkin [Wed, 20 Aug 2014 23:45:10 +0000 (19:45 -0400)]
gallium: add a texture target to sampler view and a CAP to use it

This allows a sampler view to have a different texture target than the
underlying resource. This will be used to implement the type casting
between 2d arrays and cube maps as specified in ARB_texture_view.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
10 years agonouveau: only enable stencil func if the visual has stencil bits
Ilia Mirkin [Sat, 16 Aug 2014 16:48:09 +0000 (12:48 -0400)]
nouveau: only enable stencil func if the visual has stencil bits

The _Enabled property already has the relevant information.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2 10.3" <mesa-stable@lists.freedesktop.org>
10 years agonouveau: only enable the depth test if there actually is a depth buffer
Ilia Mirkin [Fri, 15 Aug 2014 05:25:06 +0000 (01:25 -0400)]
nouveau: only enable the depth test if there actually is a depth buffer

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2 10.3" <mesa-stable@lists.freedesktop.org>
10 years agonouveau: remove unneeded assert
Maarten Lankhorst [Wed, 10 Sep 2014 15:06:34 +0000 (17:06 +0200)]
nouveau: remove unneeded assert

No idea why it was added, but the code runs fine even on videos
where it triggers.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: "10.2 10.3" <mesa-stable@lists.freedesktop.org>
10 years agonouveau: rework reference frame handling
Maarten Lankhorst [Wed, 10 Sep 2014 11:20:53 +0000 (13:20 +0200)]
nouveau: rework reference frame handling

Fixes a regression from "nouveau/vdec: small fixes to h264 handling"

New picking order for frames:
 1. Vidbuf pointer matches.
 2. Take the first kicked ref.
 3. If that fails, take a ref that has a different last_used.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: "10.2 10.3" <mesa-stable@lists.freedesktop.org>
10 years agonouveau: fix MPEG4 hw decoding
Maarten Lankhorst [Wed, 10 Sep 2014 11:18:54 +0000 (13:18 +0200)]
nouveau: fix MPEG4 hw decoding

Reorder some fields to make I-frame decoding work correctly.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: "10.2 10.3" <mesa-stable@lists.freedesktop.org>
10 years agonouveau: re-allocate bo's on overflow
Maarten Lankhorst [Wed, 10 Sep 2014 11:17:13 +0000 (13:17 +0200)]
nouveau: re-allocate bo's on overflow

The BSP bo might be too small to contain all of the bsp data,
bump its size on overflow. Also bump inter_bo when this happens,
it might be too small otherwise.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: "10.2 10.3" <mesa-stable@lists.freedesktop.org>
10 years agoilo: fix a compile error with -Werror=format-security
Chia-I Wu [Fri, 12 Sep 2014 01:44:44 +0000 (09:44 +0800)]
ilo: fix a compile error with -Werror=format-security

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83777

10 years agoi965/vec4: Only examine virtual_grf_end for GRF sources
Ian Romanick [Thu, 11 Sep 2014 00:57:54 +0000 (17:57 -0700)]
i965/vec4: Only examine virtual_grf_end for GRF sources

If the source is not a GRF, it could have a register >= virtual_grf_count.
Accessing virtual_grf_end with such a register would lead to
out-of-bounds access.  Make sure the source is a GRF before accessing
virtual_grf_end.

Fixes Valgrind complaints while compiling some shaders.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: mesa-stable@lists.freedesktop.org
10 years agost/mesa: handle failed context creation for core profile
Brian Paul [Tue, 9 Sep 2014 15:56:47 +0000 (09:56 -0600)]
st/mesa: handle failed context creation for core profile

If the glx/wgl state tracker requested a core profile but the gallium
driver did not support some feature of GL 3.1 or later, we were setting
ctx->Version=0 and then failing the assertion in
_mesa_initialize_exec_table().

With this change we check for ctx->Version=0 and tear down the context
and return NULL from st_create_context().

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
10 years agoi965: Implement GL_PRIMITIVES_GENERATED with non-zero streams.
Iago Toral Quiroga [Wed, 10 Sep 2014 08:16:13 +0000 (10:16 +0200)]
i965: Implement GL_PRIMITIVES_GENERATED with non-zero streams.

So far we have been using CL_INVOCATION_COUNT to resolve this query but this
is no good with streams, as only stream 0 reaches the clipping stage.

From ARB_transform_feedback3:

"When a generated primitive query for a vertex stream is active, the
 primitives-generated count is incremented every time a primitive emitted to
 that stream reaches the Discarding Rasterization stage (see Section 3.x)
 right before rasterization. This counter is incremented whether or not
 transform feedback is active."

Unfortunately, we don't have any registers that provide the number of primitives
written to a specific stream other than the ones that track the number of
primitives written to transform feedback in the SOL stage, so we can't
implement this exactly as specified.

In the past we implemented this feature by activating the SOL unit even if
transform feeback was disabled, but making it so that all buffers were
disabled and it only recorded statistics, which gave us the right semantics
(see 3178d2474ae5bdd1102fb3d76a60d1d63c961ff5). Unfortunately, this came with
a significant performance impact and had to be reverted.

This new take does not intend to implement the exact semantics required by
the spec, but improves what we have now, since now we return the primitive
count for stream 0 in all cases. With this patch we use
GEN7_SO_PRIM_STORAGE_NEEDED to resolve GL_PRIMITIVES_GENERATED queries
for non-zero streams. This would return the number of primitives written
to transform feedback for each stream instead. Since non-zero streams are
only useful in combination with transform feedback this should not be too
bad, and the only case that I think we would not be supporting would be
the one in which we want to use both GL_PRIMITIVES_GENERATED and
GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN on the same non-zero stream to
detect buffer overflow.

This patch also fixes the following piglit test:
arb_gpu_shader5-xfb-streams-without-invocations

This test uses both GL_PRIMITIVES_GENERATED and
GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN queries on non-zero streams, but it
does never hit the overflow case, so both queries are always expected to return
the same value.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "10.3" <mesa-stable@lists.freedesktop.org>
10 years agoradeon/uvd: use PIPE_USAGE_STAGING for msg&fb buffers
Christian König [Thu, 11 Sep 2014 07:50:00 +0000 (09:50 +0200)]
radeon/uvd: use PIPE_USAGE_STAGING for msg&fb buffers

That better matches the actual userspace use case, the
kernel will force it to VRAM if the hardware requires it.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
10 years agoradeon/video: use the hw to initial clear the buffers
Christian König [Thu, 11 Sep 2014 07:38:50 +0000 (09:38 +0200)]
radeon/video: use the hw to initial clear the buffers

Less CPU overhead and avoids contention over CPU accessible memory on startup.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
10 years agoradeon/video: use more of the common buffer code v2
Christian König [Thu, 11 Sep 2014 07:29:28 +0000 (09:29 +0200)]
radeon/video: use more of the common buffer code v2

In preparation to using buffers clears with the hw engine(s).

v2: split out flipping to using hw buffer clears.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
10 years agoscons: add /dynamicbase and /nxcompat to MinGW linkflags
José Fonseca [Thu, 11 Sep 2014 10:43:04 +0000 (11:43 +0100)]
scons: add /dynamicbase and /nxcompat to MinGW linkflags

Just like b26503b196d51dc46c815e241343e42ab30e8d66 for MSVC.

10 years agoscons: add /dynamicbase and /nxcompat to MSVC linkflags
Brian Paul [Wed, 12 Feb 2014 16:05:13 +0000 (09:05 -0700)]
scons: add /dynamicbase and /nxcompat to MSVC linkflags

This builds the opengl DLLs with address layout space randomization
(ASLR) and data execution prevention (DEP) for better security.

Reviewed-by: Kurt Daverman <krd@vmware.com>
10 years agoilo: add a new disassembler
Chia-I Wu [Wed, 10 Sep 2014 02:34:04 +0000 (10:34 +0800)]
ilo: add a new disassembler

The old disassembler was modified from i965's.  It is as much work as doing a
new one to keep it up-to-date, which also requires copying more headers over.

The outputs of this new disassembler should match i965's as closely as
possible.

10 years agoilo: update genhw headers
Chia-I Wu [Wed, 10 Sep 2014 02:16:48 +0000 (10:16 +0800)]
ilo: update genhw headers

Add some new registers and some tweaks.  The changes that affect ilo are

 GEN6_REG_HS_INVOCATION_COUNT -> GEN7_REG_HS_INVOCATION_COUNT
 GEN6_REG_DS_INVOCATION_COUNT -> GEN7_REG_DS_INVOCATION_COUNT
 GEN6_COND_NORMAL             -> GEN6_COND_NONE

10 years agoglsl: allow precision qualifier on sampler arrays
Frank Henigman [Fri, 22 Aug 2014 21:23:04 +0000 (17:23 -0400)]
glsl: allow precision qualifier on sampler arrays

If a precision qualifer is allowed on type T, it should be allowed
on an array of T.  Refactor the check to ensure this is the case.

(Fixes failures in WebGL conformance test 'gl-min-textures')

Signed-off-by: Frank Henigman <fjhenigman@google.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
10 years agoglsl: mark variable as loop constant when it is set read only
Tapani Pälli [Tue, 9 Sep 2014 11:56:06 +0000 (14:56 +0300)]
glsl: mark variable as loop constant when it is set read only

Patch modifies is_loop_constant() to take advantage of 'read_only' bit
in ir_variable to detect a loop constant. Variables marked read-only
are loop constant like mentioned by a comment in the function.

v2: remove unnecessary comment (Francisco)

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82537
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
10 years agoradeonsi: Simplify si_dma_copy_tile function
Michel Dänzer [Tue, 9 Sep 2014 07:23:43 +0000 (16:23 +0900)]
radeonsi: Simplify si_dma_copy_tile function

No functional change intended.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
10 years agou_vbuf: simple whitespace fix
Brian Paul [Wed, 10 Sep 2014 22:37:24 +0000 (16:37 -0600)]
u_vbuf: simple whitespace fix

10 years agomesa: fix UNCLAMPED_FLOAT_TO_UBYTE() macro for MSVC
Brian Paul [Wed, 10 Sep 2014 14:16:24 +0000 (08:16 -0600)]
mesa: fix UNCLAMPED_FLOAT_TO_UBYTE() macro for MSVC

MSVC replaces the "F" in "255.0F" with the macro argument which leads
to an error.  s/F/FLT/ to avoid that.

It turns out we weren't using this macro at all on MSVC until the
recent "mesa: Drop USE_IEEE define." change.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
10 years agomesa: trim down some #includes
Brian Paul [Tue, 9 Sep 2014 14:40:28 +0000 (08:40 -0600)]
mesa: trim down some #includes

10 years agopipe-loader: Include unistd.h in pipe_loader_drm.c for close function.
Vinson Lee [Sat, 6 Sep 2014 22:53:55 +0000 (15:53 -0700)]
pipe-loader: Include unistd.h in pipe_loader_drm.c for close function.

This patch fixes a build error on DragonFly.

  CC       libpipe_loader_la-pipe_loader_drm.lo
pipe_loader_drm.c: In function 'pipe_loader_drm_probe':
pipe_loader_drm.c:207:10: error: implicit declaration of function 'close' [-Werror=implicit-function-declaration]

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
10 years agoi965: Disable guardband clipping in the smaller-than-viewport case.
Kenneth Graunke [Tue, 26 Aug 2014 23:39:55 +0000 (16:39 -0700)]
i965: Disable guardband clipping in the smaller-than-viewport case.

Apparently guardband clipping doesn't work like we thought: objects
entirely outside fthe guardband are trivially rejected, regardless of
their relation to the viewport.  Normally, the guardband is larger than
the viewport, so this is not a problem.  However, when the viewport is
larger than the guardband, this means that we would discard primitives
which were wholly outside of the guardband, but still visible.

We always program the guardband to 8K x 8K to enforce the restriction
that the screenspace bounding box of a single triangle must be no more
than 8K x 8K.  So, if the viewport is larger than that, we need to
disable guardband clipping.

Fixes ES3 conformance tests:
- framebuffer_blit_functionality_negative_height_blit
- framebuffer_blit_functionality_negative_width_blit
- framebuffer_blit_functionality_negative_dimensions_blit
- framebuffer_blit_functionality_magnifying_blit
- framebuffer_blit_functionality_multisampled_to_singlesampled_blit

v2: Mention the acronym expansion for TA/TR/MC in the comments.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>