Commit graph

1158 commits

Author SHA1 Message Date
Jose Maria Casanova Crespo
97b2fb4d3e glsl: non-last member unsized array on SSBO must fail compilation on GLSL ES 3.1
From GLSL ES 3.10 spec, section 4.1.9 "Arrays":

"If an array is declared as the last member of a shader storage block
 and the size is not specified at compile-time, it is sized at run-time.
 In all other cases, arrays are sized only at compile-time."

In desktop GLSL it is allowed to have unsized-arrays that are
not last, as long as we can determine that they are implicitly
sized, which is detected at link-time.

With this patch Mesa reports a compilation error as glslang does with
the following shader:

buffer SSBO { vec4 data[]; vec4 moreData;};
void main (void)
{
}

Fixes:
dEQP-GLES31.functional.debug.negative_coverage.log.shader.compile_compute_shader
dEQP-GLES31.functional.debug.negative_coverage.callbacks.shader.compile_compute_shader
dEQP-GLES31.functional.debug.negative_coverage.get_error.shader.compile_compute_shader

Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit 5bc222ebaf)
2017-03-14 00:13:15 +00:00
Marc Di Luzio
60da51f8cf glsl: correct compute shader checks for memoryBarrier functions
As per the spec -
"The functions memoryBarrierShared() and groupMemoryBarrier() are
available only in compute shaders; the other functions are available
in all shader types."

Conform to this by adding another delegate to check for compute
shader support instead of only whether the current stage is compute

This allows some fragment shaders in Dirt Rally to compile

Cc: "17.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit 21efe2528c)
2017-03-14 00:13:15 +00:00
Bartosz Tomczyk
eca9916254 glsl: fix heap-buffer-overflow
The `end+1` skips the ']', whereas the `strlen+1` includes the final
'\0' in the move to terminate the string.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
(cherry picked from commit fc27181f9e)
2017-03-14 00:13:14 +00:00
Nicolai Hähnle
77b794d85b glsl: split DIV_TO_MUL_RCP into single- and double-precision flags
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Tested-by: Glenn Kennard <glenn.kennard@gmail.com>
Tested-by: James Harvey <lothmordor@gmail.com>
Cc: 17.0 <mesa-stable@lists.freedesktop.org>
(cherry picked from commit b71c415c3d)
2017-03-14 00:13:12 +00:00
Lionel Landwerlin
83cf2d72f7 spirv: don't assert with location decorations on non i/o variables
Some applications might add location decoration to samplers. Rather
than raising an error it seems it would make more sense to just
discard these decorations.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: 17.0 <mesa-stable@lists.freedesktop.org>
(cherry picked from commit 8a28e764d0)
2017-03-13 18:43:09 +00:00
Lionel Landwerlin
f4e2c60858 spirv: handle undefined components for OpVectorShuffle
Fixes:
   dEQP-VK.spirv_assembly.instruction.compute.opspecconstantop.vector_related
   dEQP-VK.spirv_assembly.instruction.graphics.opspecconstantop.vector_related*

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: "17.0 13.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit bbe8705c57)
[Emil Velikov: resolve trivial conflicts]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

Conflicts:
	src/compiler/spirv/spirv_to_nir.c
2017-02-16 17:59:41 +00:00
Ian Romanick
b18c791a64 linker: Accurately mark a uniform block instance array element as used in a stage
Now that information about which array-of-arrays elements are accessed
is tracked, use that information to only mark an instance array element
as used-by-stage if, in fact, it is.

Fixes GL45-CTS.program_interface_query.uniform-block-types.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit ceea514d91)
2017-02-16 17:46:15 +00:00
Ian Romanick
010886b120 glsl: Walk a list of ir_dereference_array to mark array elements as accessed
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit d32956935e)
2017-02-16 17:46:14 +00:00
Ian Romanick
473319075b glsl: Mark a set of array elements as accessed using a list of array_deref_range
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit e92935089b)
2017-02-16 17:46:14 +00:00
Ian Romanick
0288655ce7 glsl: Add structures to track accessed elements of a single array
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit 8d499f60c8)
2017-02-16 17:46:14 +00:00
Ian Romanick
64f24795b9 glsl: Add tracking for elements of an array-of-arrays that have been accessed
If there's a better way to provide access to ir_array_refcount_entry
private members to the test functions, I am very interested to know
about it.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: Francisco Jerez <currojerez@riseup.net>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit b7053b80f2)
2017-02-16 17:46:14 +00:00
Ian Romanick
784b362767 glsl: Use simpler visitor to determine which UBO and SSBO blocks are used
Very soon this visitor will get more complicated.  The users of the
existing ir_variable_refcount visitor won't need the coming
functionality, and this use doesn't need much of the functionality of
ir_variable_refcount.

v2: ir_array_refcount_visitor::get_variable_entry cannot return NULL, so
don't check it.  Suggested by Timothy.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit 5085b64031)
2017-02-16 17:46:14 +00:00
Ian Romanick
3abc968236 glsl: Track the linearized array index for each UBO instance array element
v2: Set linearizer_array_index in process_block_array_leaf.  Suggested
by Timothy.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit d56bd07bb3)
[Emil Velikov: resolve trivial conflicts]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

Conflicts:
	src/compiler/glsl/link_uniform_blocks.cpp
2017-02-16 17:46:14 +00:00
Ian Romanick
efe15de566 glsl: Fix wonkey indentation left from previous commit
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit 300de78ab1)
[Emil Velikov: resolve trivial conflicts]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

Conflicts:
	src/compiler/glsl/link_uniform_blocks.cpp
2017-02-16 17:46:14 +00:00
Ian Romanick
91df6e8aed glsl: Split process_block_array into two functions
One for the array parts and one for the leaf members.  This will
simplify later changes.

The indentation is wonkey after this patch.  This was done to make it
more obvious that the function is just getting split.  The next patch
will fix the indentation.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit 8862fefba0)
2017-02-16 17:46:14 +00:00
Ian Romanick
00d2299007 linker: Accurately track gl_uniform_block::stageref
As the linked per-stage shaders are processed, mark any block that has a
field that is accessed as referenced.  When combining all the linked
shaders, combine the per-stage stageref masks.

This fixes a number of GLES CTS tests:

    ES31-CTS.core.geometry_shader.program_resource.program_resource
    ES32-CTS.core.geometry_shader.program_resource.program_resource
    ESEXT-CTS.geometry_shader.program_resource.program_resource
    piglit.gl45-cts.geometry_shader.program_resource.program_resource

However, it makes quite a few more fail:

    ES31-CTS.functional.program_interface_query.buffer_variable.random.6
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.compute.unnamed_block.float
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.separable_fragment.unnamed_block.float
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_fragment_only_fragment.unnamed_block.float
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_fragment.unnamed_block.float
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_geo_fragment_only_fragment.unnamed_block.float
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_geo_fragment.unnamed_block.float
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_tess_fragment_only_fragment.unnamed_block.float
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_tess_fragment.unnamed_block.float
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_tess_geo_fragment_only_fragment.unnamed_block.float
    ES31-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_tess_geo_fragment.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.random.6
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.compute.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.separable_fragment.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_fragment_only_fragment.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_fragment.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_geo_fragment_only_fragment.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_geo_fragment.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_tess_fragment_only_fragment.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_tess_fragment.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_tess_geo_fragment_only_fragment.unnamed_block.float
    ES32-CTS.functional.program_interface_query.buffer_variable.referenced_by.vertex_tess_geo_fragment.unnamed_block.float

I have diagnosed the failures, but I'm not sure whether we or the
tests are wrong.  After optimizations are applied, all of the tests
are of the form:

    buffer X {
        float f;
    } x;

    void main()
    {
        x.f = x.f;
    }

The test then queries that x is referenced by that shader stage.  We
eliminate the assignment of x.f to itself, and that removes the last
reference to x.  We report that x is not referenced, and the test fails.
I do not know whether or not we are allowed to eliminate that assignment
of x.f to itself.

After discussions with the OpenGL ES group in Khronos, we believe that
Mesa's behavior is correct.  I will provide patches to the CTS tests
to Khronos.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit 084105c213)
[Emil Velikov: nominate considering the above fixes and it's a
requirement for the following nine patches]
Nominated-by: Emil Velikov <emil.velikov@collabora.com>
2017-02-16 17:46:14 +00:00
Ian Romanick
ed48242e05 linker: Slight code rearrange to prevent duplication in the next commit
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
(cherry picked from commit 392fabcfee)
2017-02-16 17:46:09 +00:00
Lionel Landwerlin
58c7c9d438 spirv: handle OpUndef as part of the variable parsing pass
Looking at the following bit of SPIRV shader :

...
%zero        = OpConstant %i32 0
%ivec3_0     = OpConstantComposite %ivec3 %zero %zero %zero
%vec3_undef  = OpUndef %ivec3
%sc_0        = OpSpecConstant %i32 0
%sc_1        = OpSpecConstant %i32 0
%sc_2        = OpSpecConstant %i32 0
...

Our compiler currently stops parsing variables & types on the OpUndef
and switches to instructions, leaving the following sc_[0-2] variables
untreated.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: "17.0 13.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit df7063cba3)
2017-02-08 16:01:34 +00:00
Jason Ekstrand
a545a33b1a nir/search: Use the correct bit size for integer comparisons
The previous code always compared integers as 64-bit.  Due to variations
in sign-extension in the code generated by nir_opt_algebraic.py, this
meant that nir_search doesn't always do what you want.  Instead, 32-bit
values should be matched as 32-bit and 64-bit values should be matched
as 64-bit.  While we're here we unify the unsigned and signed paths.
Now that we're using the right bit size, they should be the same since
the only difference we had before was sign extension.

This gets the UE4 bitfield_extract optimization working again.  It had
stopped working due to the constant 0xff00ff00 getting sign-extended
when it shouldn't have.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: "17.0 13.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit bb96b03461)
2017-02-08 15:53:20 +00:00
Kenneth Graunke
704072afed glsl: Use ir_var_temporary when generating inline functions.
We were using ir_var_auto for the inlined function parameter variables,
which is wrong, as it suggests that those are real variables declared
by the program.

Normally this doesn't matter.  However, if you called built-ins at
global scope, it would pollute the global variable namespace with
these new parameter temporaries.  If the shader already had variables
with those names, the linker might see contradictory global variable
declarations and raise an error.

Making them temporaries indicates that these are just things generated
by the compiler internally.  This avoids confusing the linker.

Fixes a new Piglit test: glsl-fs-multiple-builtins.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99154
Reported-by: Niels Ole Salscheider <niels_ole@salscheider-online.de>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
(cherry picked from commit 62b8bcda1c)
2017-01-24 01:13:32 +00:00
Jason Ekstrand
fb51df52d0 nir/search: Only allow matching SSA values
This is more correct and should also be a tiny bit faster since we're
just comparing pointers instead of calling nir_src_equal.

Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit c472568b4e)
2017-01-24 01:13:28 +00:00
Kenneth Graunke
f41850eaad spirv: Move cursor before calling vtn_ssa_value() in phi 2nd pass.
vtn_ssa_value() can produce variable loads, and the cursor might
be after a return statement, causing nir_builder assert failures
about not inserting instructions after a jump.

This fixes:
dEQP-VK.spirv_assembly.instruction.graphics.barrier.in_if
dEQP-VK.spirv_assembly.instruction.graphics.barrier.in_switch

Cc: "13.0 12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
(cherry picked from commit 203c128781)
2017-01-24 01:13:28 +00:00
Timothy Arceri
37dcca9a78 glsl: fix opt_minmax redundancy checks against baserange
Marking operations as redundant if they are equal to the base
range is fine when the tree structure is something like this:

        max
      /     \
     max     b
    /   \
   3    max
       /   \
      3     a

But the opt falls apart with a tree like this:

        max
     /       \
    max     max
   /   \   /   \
  3    a   b    3

The problem is that both branches are treated the same: descending in
the left branch will prune the constant, and then descending the right
branch will prune the constant there as well, because limits[0] wasn't
updated to take the change on the left branch into account, and so we
still get [3,\infty) as baserange.

In order to fix the bug we just disable the marking of redundant expressions
when they match the baserange.

NIR algebraic opt will clean up the first tree for anyway, hopefully
other backends are smart enough to do this also.

Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
(cherry picked from commit 1edc53a66b)
2017-01-24 01:13:28 +00:00
Timothy Arceri
1185212d79 nir: Turn imov/fmov of undef into undef
Reverting the previous attempt at this a5502a721f resulted in
the following Vulkan test failing.

dEQP-VK.glsl.return.return_in_dynamic_loop_dynamic_vertex

This time we use the num_components from the alu dest rather than
num_inputs to the op to determine the size of the undef.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99100
(cherry picked from commit 3421b3f5a3)
2017-01-24 01:13:21 +00:00
Rhys Kidd
241dc4634f glsl: Add pthread libs to cache_test
Fixes the following compile error, present when the SHA1 library is libgcrypt:

  CCLD     glsl/tests/cache-test
glsl/.libs/libglsl.a(libmesautil_la-mesa-sha1.o): In function `call_once':
/mesa/src/util/../../include/c11/threads_posix.h:96: undefined reference to `pthread_once'

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
(cherry picked from commit 5c73ecaac4)
2016-12-24 13:03:53 +00:00
Timothy Arceri
c682fdb77c Revert "nir: Turn imov/fmov of undef into undef."
This reverts commit 6aa730000f.

This was changing the size of the undef to always be 1 (the number of inputs
to imov and fmov) which is wrong, we could be moving a vec4 for example.

Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit a5502a721f)
2016-12-16 13:01:00 +00:00
Jason Ekstrand
fb9f0a1197 spirv: Use a simpler and more correct implementaiton of tanh()
The new implementation is more correct because it clamps the incoming value
to 10 to avoid floating-point overflow.  It also uses a much reduced
version of the formula which only requires 1 exp() rather than 2.  This
fixes all of the dEQP-VK.glsl.builtin.precision.tanh.* tests.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0" <mesa-dev@lists.freedesktop.org>
(cherry picked from commit da1c49171d)
2016-12-15 16:46:28 +00:00
Haixia Shi
41c688a6c3 compiler/glsl: fix precision problem of tanh
Clamp input scalar value to range [-10, +10] to avoid precision problems
when the absolute value of input is too large.

Fixes dEQP-GLES3.functional.shaders.builtin_functions.precision.tanh.* test
failures.

v2: added more explanation in the comment.
v3: fixed a typo in the comment.

Signed-off-by: Haixia Shi <hshi@chromium.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "13.0" <mesa-dev@lists.freedesktop.org>
(cherry picked from commit d4983390a8)
2016-12-15 16:46:11 +00:00
Timothy Arceri
7f2ee55aac mesa: fix active subroutine uniforms properly
07fe2d565b introduced a big hack in order to return
NumSubroutineUniforms when querying ACTIVE_RESOURCES for
<shader>_SUBROUTINE_UNIFORM interfaces. However this is the
wrong fix we are meant to be returning the number of active
resources i.e. the count of subroutine uniforms in the
resource list which is what the code was previously doing,
anything else will cause trouble when trying to retrieve
the resource properties based on the ACTIVE_RESOURCES count.

The real problem is that NumSubroutineUniforms was counting
array elements as separate uniforms but the innermost array
is always considered a single uniform so we fix that count
instead which was counted incorrectly in 7fa0250f9.

Idealy we could probably completely remove
NumSubroutineUniforms and just compute its value when needed
from the resource list but this works for now.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Cc: 13.0 <mesa-stable@lists.freedesktop.org>
(cherry picked from commit 0303201dfb)
[Emil Velikov: LinkStatus is in gl_shader_program]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

Conflicts:
	src/mesa/main/program_resource.c
2016-12-14 19:03:10 +00:00
Gwan-gyeong Mun
c19a331139 util/disk_cache: close a previously opened handle in disk_cache_put (v2)
We're missing the close() to the matching open().

CID 1373407

v2: Fixes from Emil Velikov's review
    Update the teardown in reverse order of the setup/init.

Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Mun Gwan-gyeong <elongbug@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com> (v1)
(cherry picked from commit 69cc7d90f9)
2016-11-24 16:34:41 +00:00
Nicolai Hähnle
63e2bb2f36 glsl/lower_output_reads: fix geometry shader output handling with conditional emit
Consider a geometry shader that contains code like this:

   some_out = expr;

   if (cond) {
      ...
      EmitVertex();
   } else {
      ...
      EmitVertex();
   }

Both branches should see the correct value of some_out.

Since this is a rather subtle and rare case, I'm submitting a piglit test
for this as well.

GLSL says that the values of output variables are undefined after
EmitVertex(). With this change, the values will now be defined and
unmodified. This may reduce optimization opportunities in the probably
quite rare case where subsequent compiler passes cannot prove that the
value of the output variable is overwritten.

Cc: 13.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
(cherry picked from commit 0d383a79a8)
2016-11-24 16:34:41 +00:00
Jason Ekstrand
90bf0cb313 nir/spirv: Fix handling of gl_PrimitiveId
Before, we were always treating it as an output which bogus.  The only
stage in which this it can be an output is the geometry stage.  In all
other stages, it's an input which, in the back-end, we actually want to be
a system value.

Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit 9557147592)
2016-11-24 16:34:40 +00:00
Ian Romanick
953030bbb3 glsl: Parse 0 as a preprocessor INTCONSTANT
This allows a more reasonable error message for '#version 0' of

    0:1(10): error: GLSL 0.00 is not supported. Supported versions are: 1.10, 1.20, 1.30, 1.00 ES, 3.00 ES, 3.10 ES, and 3.20 ES

instead of

    0:1(10): error: syntax error, unexpected $undefined, expecting INTCONSTANT

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97420
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Cc: mesa-stable@lists.freedesktop.org
Cc: Juan A. Suarez Romero <jasuarez@igalia.com>
Cc: Karol Herbst <karolherbst@gmail.com>
(cherry picked from commit c8c46641af)
2016-11-23 14:00:44 +00:00
Ian Romanick
dfd6b765ba glcpp: Handle '#version 0' and other invalid values
The #version directive can only handle decimal constants.  Enforce that
the value is a decimal constant.

Section 3.3 (Preprocessor) of the GLSL 4.50 spec says:

    The language version a shader is written to is specified by

        #version number profile opt

    where number must be a version of the language, following the same
    convention as __VERSION__ above.

The same section also says:

    __VERSION__ will substitute a decimal integer reflecting the version
    number of the OpenGL shading language.

Use a separate flag to track whether or not the #version line has been
encountered.  Any possible sentinel (0 is currently used) could be
specified in a #version directive.  This would lead to trying to
(internally) redefine __VERSION__.  Since there is no parser location
for this addition, NULL is passed.  This eventually results in a NULL
dereference and a segfault.

Attempts to use -1 as the sentinel would also fail if '#version
4294967295' or '#version 18446744073709551615' were used.  We should
have piglit tests for both of these.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97420
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Cc: mesa-stable@lists.freedesktop.org
Cc: Juan A. Suarez Romero <jasuarez@igalia.com>
Cc: Karol Herbst <karolherbst@gmail.com>
(cherry picked from commit e85a747e29)
2016-11-23 13:59:41 +00:00
Dave Airlie
fa6c02787e nir: add conditional discard optimisation (v4)
This is ported from GLSL and converts

if (cond)
	discard;

into
discard_if(cond);

This removes a block, but also is needed by radv
to workaround a bug in the LLVM backend.

v2: handle if (a) discard_if(b) (nha)
cleanup and drop pointless loop (Matt)
make sure there are no dependent phis (Eric)
v3: make sure only one instruction in the then block.
v4: remove sneaky tabs, add cursor init (Eric)

Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit b16dff2d88)
2016-11-09 23:41:48 +00:00
Francisco Jerez
2789bfdbb5 nir: Flip gl_SamplePosition in nir_lower_wpos_ytransform().
Assuming the hardware is set up to use a screen coordinate system
flipped vertically with respect to the GL's window coordinate system,
the SYSTEM_VALUE_SAMPLE_POS vector will also be flipped vertically
with respect to the value expected by the GL, so we need to give it
the same treatment as gl_FragCoord.  Fixes the following CTS tests on
i965:

 ES31-CTS.functional.shaders.multisample_interpolation.interpolate_at_offset.at_sample_position.default_framebuffer
 ES31-CTS.functional.shaders.sample_variables.sample_pos.correctness.default_framebuffer

when run with any multisample configuration, e.g. rgba8888d24s8ms4.

Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
(cherry picked from commit f3d387867f)
2016-11-09 14:00:31 +00:00
Nicolai Hähnle
996c20208f glsl: fix lowering of UBO references of named blocks
When a UBO reference has the form block_name.foo where block_name refers
to a block where the first member has a non-zero offset, the base offset
was incorrectly added to the reference.

Fixes an assertion triggered in debug builds by
GL45-CTS.enhanced_layouts.uniform_block_layout_qualifier_conflict. That test
doesn't properly check for correct execution in this case, so I am also
going to send out a piglit test.

Cc: 13.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
(cherry picked from commit 37d646c1b3)
2016-11-09 13:57:21 +00:00
Kenneth Graunke
9397899aed glsl: Update deref types when resizing implicitly sized arrays.
At link time, we resolve the size of implicitly sized arrays.
When doing so, we update the type of the ir_variables.  However,
we neglected to update the type of ir_dereference nodes which
reference those variables.

It turns out array_resize_visitor (for GS/TCS/TES interface array
handling) already did 2/3 of the cases for this, so we can simply
refactor the code and reuse it.

This fixes:
GL45-CTS.shader_storage_buffer_object.basic-syntax
GL45-CTS.shader_storage_buffer_object.basic-syntaxSSO

which have an SSBO containing an implicitly sized array, followed
by some other members.  setup_buffer_access uses the dereference
types to compute offsets to fields, and it had a stale type where
the implicitly sized array's length was still 0 instead of the
actual length.

While we're here, we can also fix update_array_sizes to properly
update deref types as well, fixing a FINISHME from 2010.

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
(cherry picked from commit 8df4aebc94)
2016-11-09 13:55:41 +00:00
Timothy Arceri
bd3fde4068 mesa/glsl: delete previously linked shaders earlier when linking
This moves the delete linked shaders call to
_mesa_clear_shader_program_data() which makes sure we delete them
before returning due to any validation problems.

It also reduces some code duplication.

From the OpenGL 4.5 Core spec:

   "If LinkProgram failed, any information about a previous link of
   that program object is lost. Thus, a failed link does not restore
   the old state of program.

   ...

   If one of these commands is called with a program for which
   LinkProgram failed, no error is generated unless otherwise noted.
   Implementations may return information on variables and interface
   blocks that would have been active had the program been linked
   successfully. In cases where the link failed because the program
   required too many resources, these commands may help applications
   determine why limits were exceeded."

Therefore it's expected that we shouldn't be able to query the
program that failed to link and retrieve information about a
previously successful link.

Before this change the linker was doing validation before freeing
the previously linked shaders and therefore could exit on failure
before they were freed.

This change also fixes an issue in compat profile where a program
with no shaders attached is expect to fall back to fixed function
but was instead trying to relink IR from a previous link.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97715
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit d2861d682a)
2016-11-09 13:53:50 +00:00
Kenneth Graunke
0ff597c39b glsl: Improve accuracy of alpha scaling in advanced blend lowering.
When blending with GL_COLORBURN_KHR and these colors:

   dst = <0.372549027, 0.372549027, 0.372549027, 0.372549027>
   src = <0.09375, 0.046875, 0.0, 0.375>

the normalized dst value became 0.99999994 (due to precision problems
in the floating point divide of rgb by alpha).  This caused the color
burn equation to fail the dst >= 1.0 comparison.  The blue channel would
then fall through to the dst < 1.0 && src >= 0 comparison, which was
true, since src.b == 0.  This produced a factor of 0.0 instead of 1.0.

This is an inherent numerical instability in the color burn and dodge
equations - depending on the precision of alpha scaling, the value can
be either 0.0 or 1.0.  Technically, GLSL floating point division doesn't
even guarantee that 0.372549027 / 0.372549027 = 1.0.  So arguably, the
CTS should allow either value.  I've filed a bug at Khronos for further
discussion (linked below).

In the meantime, this patch improves the precision of alpha scaling by
replacing the division with (rgb == alpha ? 1.0 : rgb / alpha).  We may
not need this long term, but for now, it fixes the following CTS tests:

ES31-CTS.blend_equation_advanced.blend_specific.GL_COLORBURN_KHR
ES31-CTS.blend_equation_advanced.blend_all.GL_COLORBURN_KHR_all_qualifier

Cc: currojerez@riseup.net
Cc: mesa-stable@lists.freedesktop.org
Bugzilla: https://cvs.khronos.org/bugzilla/show_bug.cgi?id=16042
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
(cherry picked from commit e6aeeace69)
2016-11-01 12:47:32 +00:00
Samuel Iglesias Gonsálvez
7a977612fc glsl: update default precision qualifier when it is set in the shader
Default precision qualifier for a data type could be set several times
inside a shader. This patch allows to update the default precision
qualifier for the given type that is saved in the symbol table.

If it is not in the symbol table, just add it.

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97804
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
(cherry picked from commit 0e742926c6)
2016-10-27 19:47:20 +01:00
Timothy Arceri
ea37a06037 glsl/mesa: remove unused namespace support from the symbol table
Namespace support seems to have been unused for a very long time.

Previously the hash table entry was never removed and the symbol name
wasn't freed until the symbol table was destroyed.

In theory this could reduced the number of times we need to copy a string
as duplicate names are reused. However in practice there is likely only a
limited number of symbols that are the same and this is likely to cause
other less than optimal behaviour such as the hash_table continuously
growing.

Along with dropping namespace support this change removes entries from
the hash table as they become unused.

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
(cherry picked from commit 6dbe8a1b9f)
Nominated-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
2016-10-27 19:11:47 +01:00
Kenneth Graunke
02d5e60ee0 glsl: Size TCS->TES unsized arrays to gl_MaxPatchVertices for queries.
SSO validation and other program interface queries want to see that
unsized (non-patch) TCS output/TES input arrays are implicitly sized
to gl_MaxPatchVertices.

By the time we create the program resource lists, we've sized the arrays
to their actual size.  (We try to create TCS output arrays to match the
output patch size right away, and at this point, we should have shrunk
TES input arrays.)  One option would be to keep them sized to
gl_MaxPatchVertices, and defer shrinking them.  But that's a big change,
and I don't think it's a good idea.

Instead, this patch introduces a new ir_variable flag which indicates
the variable is implicitly to gl_MaxPatchVertices.  Then, the linker
munges the types when creating the resource list, ignoring the size
in the IR's types.  Basically, lie about it for resource queries.
It's ugly, but I think it ought to work.

We probably could use var->data.implicit_sized_array for this, but
I opted for a separate bit to try and avoid convoluting the existing
SSBO handling.  They're similar in concept, but share none of the
same code...

Fixes:
ES31-CTS.core.tessellation_shader.single.xfb_captures_data_from_correct_stage
and the ES32-CTS and ESEXT-CTS variants.

v2: Add a comment (requested by Timothy, written by me).

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
(cherry picked from commit 173558445d)
2016-10-27 11:33:14 +01:00
Kenneth Graunke
649a47a834 glsl: Pass ctx to program interface query helper functions.
The next commit will use this in add_shader_variable - this just
separates out some of the mechanical changes for easier review.

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
(cherry picked from commit 34fd2ffed8)
2016-10-27 11:31:59 +01:00
Ian Romanick
7c0c3740f0 glsl: Remove unused function import_prototypes
Once upon a time, this was used to extract prototypes from the shader
containing GLSL built-in functions.  This was removed by f5692f45 in
November 2010 for Mesa 7.10.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
2016-10-17 11:32:03 -07:00
Ian Romanick
5c025ea6fc glsl: Remove prototypes for nonexistent functions
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
2016-10-17 11:32:03 -07:00
Ian Romanick
fde48c1262 glsl: Replace assert with unreachable
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
2016-10-17 11:32:03 -07:00
Nicolai Hähnle
e0213f36bb glsl: print non-zero bindings of variables
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
2016-10-17 19:09:33 +02:00
Iago Toral Quiroga
8785a8ff89 glsl: fail compilation of compute shaders when unsupported
Generally, we only check for the presence of compute shaders during
parsing when we find any language (like layout qualifiers) that are
specific to compute shaders, however, it is possible to define an
empty compute shader does not use any language specific to compute
shaders at all and we should fail the compilation anyway. dEQP checks
this.

This patch adds a check for compute shader availability after we have
parsed the source code. At this point we know the effective GLSL version
and also extensions enabled in the shader.

Fixes a subcase of the following dEQP tests:
dEQP-GLES31.functional.debug.negative_coverage.callbacks.shader.compile_compute_shader
dEQP-GLES31.functional.debug.negative_coverage.get_error.shader.compile_compute_shader
dEQP-GLES31.functional.debug.negative_coverage.log.shader.compile_compute_shader

The tests still fail because there is one more subcase that fails that needs
another fix.

Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
2016-10-17 15:14:12 +02:00
Kenneth Graunke
f30f48476f glsl: Disable textureOffset(sampler2DArrayShadow, ...) in GLSL ES.
This has apparently never existed in GLSL ES.

Fixes dEQP-GLES3.functional.shaders.texture_functions.invalid
.textureoffset_sampler2darrayshadow_vec4_ivec2_vertex and
.textureoffset_sampler2darrayshadow_vec4_ivec2_fragment

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98244
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
2016-10-16 15:05:00 -07:00