DXC will bail if these get too deeply nested (~256).
This is also a risk for stack-overflows, so apply a limit agreed by the
WGSL working group.
Fixed: tint:1518
Change-Id: Idacdba85b36b27a0a89a3a7958fd4c6cce7dc84d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/105964
Auto-Submit: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
This CL adds support for `break-if` to Tint.
Bug: tint:1633, tint:1451
Change-Id: I30dfd62a3e09255624ff76ebe0cdd3a3c7cf9c5f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/106420
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: dan sinclair <dsinclair@google.com>
Rules for shift left of concrete values are now split between signed and
unsigned. Shifting unsigned values no longer fails with "sign change"
errors. Furthermore, shifting unsigned values must only shift out 0s.
See https://github.com/gpuweb/gpuweb/pull/3539.
Bug: tint:1701
Bug: tint:1717
Change-Id: Iba2799f4b02cdc77cc58a6c7c104aaa408f0f0f9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/106381
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
In WGSL, we can shift left abstracts by >= 64, as long as the result is
representable in the data type we choose for it. When shifting 0, we can
shift by any positive u32 value (result is always 0), but in C++, it's
UB to shift by more than the bit width of the data type, so we need to
handle this. This bug was caught by ClusterFuzz.
Bug: chromium:1372963
Change-Id: I638ca190b93538908ca6472f3735627ea8531c5a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/106266
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
This CL rearranges testcases for E2E test/tint/bug/chromium/1367602,
now it has testcases for both function, private, and storage address
space array variable, with and without explicit initializer, and array
count less than 65536.
Bug: chromium:1367602
Change-Id: Ica0ec9c36586bc7eae0d46473575284e9b734092
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/105282
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Similar to the handling of packed values in the arithmetic operators
the shift operators need to cast to the unpacked type before doing the
as_type casts.
Bug: tint:1542
Change-Id: I4289c45ab0a067ce122f61675fe5e251a83b6f8b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/105720
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Demonstrates that this is not an issue.
Fixed: tint:1563
Change-Id: I5a33e6805cf0a5c52a6306f6d7e5949cee5636a5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/105641
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
In 104681 the vectors were cast to themselves to fixup an issue
with `packed_int`. That CL used an `as_type` which does a bit cast.
A `packed_int` can not be bitcast to an `int`. This CL changes to
a type cast, so instead of `as_type<int3>()` it does `int3()`.
Bug: tint:1677
Change-Id: I72218c06853e4e5ae1a0d34e2fc3e1ca597de993
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/104682
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
This CL adds element count limits to arrays. In FXC there is a maximum
of 65536 elements in an array. This limit is not yet in WGSL, but adding
this here allows us to fix the issue with large arrays and GLSL.
Bug: chromium:1367602
Change-Id: I7df9d3e4f6c3e5107420d5f8e576d1f33e453161
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/104240
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Currently in the MSL backend we cast int values to uint in order to get
the correct WGSL behaviour for over/under flow. This fails in the case
of host shareable buffers as they use `packed` types which need to get
cast to the non-packed version first.
Bug: tint:1677
Change-Id: I57b70abaa8ca614472a26d63f19c1aef2bd64668
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/103986
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
I added the forcing of the "loop" attribute to all loops to address FXC
failing on uniformity errors related to gradients in loops. Since then,
Tint now implements UA and it recently became an error, so we no longer
need this hack. As a result, FXC is now better able to cope with loops
that it determines executes 0 times.
Most e2e tests are affected because so many use loops, but 27 tests that
were previously failing are now passing with this change:
tint/bug/tint/1538.wgsl.expected.fxc.hlsl
tint/bug/tint/1604.wgsl.expected.fxc.hlsl
tint/bug/tint/1605.wgsl.expected.fxc.hlsl
tint/unittest/reader/spirv/SpvParserCFGTest_ClassifyCFGEdges_LoopBreak_FromLoopHeader_SingleBlockLoop_TrueBranch.spvasm.expected.fxc.hlsl
tint/unittest/reader/spirv/SpvParserCFGTest_ComputeBlockOrder_Loop_HeaderHasBreakUnless.spvasm.expected.fxc.hlsl
tint/unittest/reader/spirv/SpvParserCFGTest_EmitBody_IfSelection_TrueBranch_LoopBreak.spvasm.expected.fxc.hlsl
tint/unittest/reader/spirv/SpvParserCFGTest_FindIfSelectionInternalHeaders_TrueBranch_LoopBreak_Ok.spvasm.expected.fxc.hlsl
tint/unittest/reader/spirv/SpvParserFunctionVarTest_EmitStatement_Phi_MultiBlockLoopIndex.spvasm.expected.fxc.hlsl
tint/unittest/reader/spirv/SpvParserFunctionVarTest_EmitStatement_Phi_SingleBlockLoopIndex.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/cov-dead-code-unreachable-merge/0-opt.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/cov-dead-code-unreachable-merge/0-opt.wgsl.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/similar-nested-ifs/0-opt.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/similar-nested-ifs/0-opt.wgsl.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/spv-load-from-frag-color/1.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/spv-load-from-frag-color/1.wgsl.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-false-if-discard-loop/0.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-false-if-discard-loop/0.wgsl.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-fragcoord-less-than-zero/0.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-fragcoord-less-than-zero/0.wgsl.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-fragcoord-less-than-zero/1.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-fragcoord-less-than-zero/1.wgsl.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-with-loop-read-write-global/0-opt.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-with-loop-read-write-global/0-opt.wgsl.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-with-loop-read-write-global/1.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/stable-binarysearch-tree-with-loop-read-write-global/1.wgsl.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/write-red-after-search/0-opt.spvasm.expected.fxc.hlsl
tint/vk-gl-cts/graphicsfuzz/write-red-after-search/0-opt.wgsl.expected.fxc.hlsl
Bug: tint:1522
Bug: tint:1538
Bug: tint:1604
Bug: tint:1605
Change-Id: I530b846b6b8df122ab351ff7b85d3e1c9ac11526
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/104121
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
These have been warnings for multiple months.
Time to properly turn this on.
Bug: tint:880
Change-Id: I3b38f672309b5acd48c12a38dc5a1675f3c62470
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/103480
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
This CL fixes the usage of overrides in array sizes. Currently
the usage will generate a validation error as we check that the
array size is const.
Bug: tint:1660
Change-Id: Ibf440905c30a73b581d55b0c071b8621b61605e6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/101900
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: dan sinclair <dsinclair@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
This change does not attempt to fix this issue.
Bug: tint:1665
Bug: tint:1666
Change-Id: I9b40a25279b939977c826f38592518b6b086c06b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/101161
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Shuffle the transform orders to ensure that these are embedded in a structure before running the Std140 transform.
Add more end-to-end tests for these.
As pointed out in tint:1673, arrays of matrices are not correctly decomposed by the Std140 transform.
This will be addressed by a later change.
Bug: tint:1673
Change-Id: I47c93e458ff48578922d576819792e8ed3a5723c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/102541
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Zhaoming Jiang <zhaoming.jiang@intel.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
We already compute the "first" and "last" basic block that
uses a value, so we could know when to hoist a value into
a var declaration. You have to do this sometimes to make
sure all uses are in scope of the declaration.
Until now we tracked Phis with an entirely different mechanism.
But there are cases which broke down. That's what happens
in crbug.com/tint/1649.
Additionally, GraphicsFuzz cases generarte similar weirdness.
Also, be more careful about ensuring that the assignments
generated to feed phis behave as if they occur in parallel.
Within a single batch of such assignments, generate and
use intermediate let-declarations for phis that that batch
will overwrite.
Also, unwrap-references when rectifying the signedness of
binary operators.
Skip tests that fail due to crbug.comt/tint/98:
test/tint/bug/tint/749.spvasm.*
Fixed: tint:1649
Change-Id: I7314c351b74a10bfa9a18011f3d80a520568011c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/101220
Auto-Submit: David Neto <dneto@google.com>
Commit-Queue: David Neto <dneto@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Since GLSL ES does not support the offset= attribute, struct members
with explicit @align or @size attributes require adding explicit
padding members. This in turn requires rewriting any constructor
calls to initialize the new padding to zero, handled in the same
transform.
Note that this is currently overly-verbose, and will add padding where
GLSL doesn't technically need it (e.g., padding a vec3 out to 16 bytes).
Bug: tint:1415
Change-Id: Ia9ba513066a0e84f4c43247fcbbe02f5fadd6630
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/101720
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
These can be used in all sorts of places which are not tracked by sem::Function::TransitivelyReferencedGlobals().
As they're not emitted as variables by any backend, just preserve them.
Fixed: tint:1598
Change-Id: I2696486cb2ffe8408bd5dd3090d7d600ca1d170f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/101481
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Auto-Submit: Ben Clayton <bclayton@google.com>
Modify the AddSpirvBlockAttribute transform to fix top-level structure
access of uniform, storage and push-constant buffers for use in the
GLSL backend. The small change to the transform makes the transform
wrap host-sharable buffers, if they're also used as a
non-host-sharable structure. Also rename the transform to
AddBlockAttrbibute in order to reflect its wider applicability.
Change-Id: Ib2bf4ebf6bce72790791dbae9387032be765e4b9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/101061
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
If the let initializer was an abstract numeric that was implicitly materialized to a concrete type, then we could inlining the initializer into the use without the implicit materialization cast.
This could lead to validation errors, and subtly different results in the program.
In this situation, add an explicit cast to keep the types the same before and after inlining.
Fixed: tint:1664
Change-Id: Icca980cf8af74673906ad6c681a6b07d0c1932fd
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/101160
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
This transform breaks up matNx2<f32> matrices used in uniform buffers
into column vectors, which fixes std140 layout rules.
Used by the SPIR-V and GLSL backends.
Re-enable tests that were disabled for these cases.
Bug: tint:1632
Change-Id: I596d016582b4189a0b413d762b3e7eabd3504b22
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/100907
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
This patch fix a bug in DecomposeMemoryAccess, allowing access index 0
of a member in uniform and storage buffer being recognized as constant
index.
Bug: tint:1652
Change-Id: Ia428de17c860bdafe87c3af9e46426c74fe8fd68
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99480
Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Auto-Submit: Zhaoming Jiang <zhaoming.jiang@intel.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
PromoteInitializersToLet was not handling sem::Materialize nodes.
This can happen for const arrays when they are dynamically indexed.
Fixed: tint:1653
Change-Id: I3d67d8139e481c89b31a3a30c7ef44384b7545ba
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99500
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
This CL changes the MSL emission for struct initializers to emit the
struct name first.
`const a = {.f=float3(1)}` becomes `const a = Normals{.f=float3(1)}`.
This fixes an issues where the initialization happens inside an array
which the downstream compiler rejected without the explicit struct
naming.
Bug: tint:1641
Change-Id: I948b9ca94f4b89eac6d5bbbaa615b3d71d50c737
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/98760
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
If a call to atan2 with args of type AFloat and AInt is made, Resolver
would correctly select the atan2(AFloat, AFloat) overload, but if the
input args were of type (AFloat, AInt), it would attempt to constant
evaluate without first converting the AInt arg to AFloat. The same would
occur for a binary operation, say AFloat + AInt. Before constant
evaluating, the Resolver now converts AInt to AFloat if necessary.
Bug: chromium:1350147
Change-Id: I85390c5d7af7e706115278ece34b2b18b8574f9f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/98543
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
This will be needed by an upcoming CL that fixes call statements to
builtins that return a constant value. Without this transform, the
constant value reaches the backend, where we don't currently deal with
abstract numbers. Note that the other backends (HLSL, MSL, GLSL) already
use this transform.
Bug: chromium:1350147
Change-Id: Icc1f1416a07db228f8e3f39851a9ac079c48319f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/98740
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
This patch implement modf and frexp built-ins for f16 types, and also
simplify their implementation for f32 in MSL and HLSL, and clean up
deprecated code in GLSL writer. Corresponding unittests are also
implemented, but end-to-end tests for f16 are not implemented yet.
Bug: tint:1473, tint:1502
Change-Id: I12887ae5303c6dc032a51f619e1afeb19b4603b6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/98102
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
This CL updates the list of reserved words to match the WGSL spec. The
use of a reserved word is changed from an error to a deprecation at the
moment be cause the majority of the list would be new errors.
Bug: tint:1633 tint:1624
Change-Id: I498db41689cdd666dfb291b1a6761a1182c87ec8
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/98042
Reviewed-by: David Neto <dneto@google.com>
Reviewed-by: Ben Clayton <bclayton@chromium.org>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Ben Clayton
Antonio Maiorano
dan sinclair
Zhaoming Jiang
David Neto
Stephen White
Loko Kung