This replaces the @override keyword that was previously used for
pipeline-overridable constants.
Support for pipeline-overridable constants in Dawn is hidden behind
the "disallow-unsafe-APIs" toggle, so we can make this change directly
instead of deprecating and continuing to support the old syntax.
Fixed: tint:1403
Change-Id: I9b2957a1e33b12772bfe449c0f3a31d929f8aa8b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/80480
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>
That is, bring back both VarForDynamicIndex and
PromoteInitializersToConstVar. This is not a complete revert, though:
* VarForDynamicIndex no longer depends on ForLoopToLoop
* Both can cope with hoisting from "else if"
* More unit tests were added in the interim
Delete PromoteSideEffectsToDecl for now. This may be brought back to
handle ensuring order of evaluation.
Bug: tint:1300
Change-Id: I8bbae46377ec4603cc02c1eb3f0661a8461a19fa
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/79940
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Holds `DependencyOrderedDeclarations()`, which will hold the
sorted dependency-graph ordered list of global declarations.
Bug: tint:1266
Change-Id: I9840fae8689abd214973ea4785f71c3ae2587bbc
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/79766
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Will be used to implement order of execution.
Bug: tint:1300
Change-Id: I027295e482da7a3f9d7ca930b5303e8f89d7fe09
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/79824
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Introduce a glsl::Version, to allow the client to specify ES or
Desktop, as well as the desired GLSL major and minor version.
Bug: tint:1422
Change-Id: I4116bc2da40ae6a553dc2522d042dda1464a0c05
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/79700
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
Currently contains a subset of ast nodes to make it easier to debug.
Bug: tint:1331
Change-Id: I27afe3c57aa752bdf823120e31585100c8adbe36
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/79460
Auto-Submit: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Transform any SPIR-V that has an array with a custom stride:
@stride(S) array<T, N>
into:
struct strided_arr {
@size(S) er : T;
};
array<strided_arr, N>
Also remove any @stride decorations that match the default array stride.
Bug: tint:1394
Bug: tint:1381
Change-Id: I8be8f3a76c5335fdb2bc5183388366091dbc7642
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/78781
Reviewed-by: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
A type dispatch helper with replaces chains of:
if (auto* a = obj->As<A>()) {
...
} else if (auto* b = obj->As<B>()) {
...
} else {
...
}
with:
Switch(obj,
[&](A* a) { ... },
[&](B* b) { ... },
[&](Default) { ... });
This new helper provides greater opportunities for optimizations, avoids
scoping issues with if-else blocks, and is slightly cleaner (IMO).
Bug: tint:1383
Change-Id: Ice469a03342ef57cbcf65f69753e4b528ac50137
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/78543
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
This matches the term used in the WGSL spec.
Change-Id: I4603332b828450c126ef806f1064ed54f372013f
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/78787
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
This matches (mostly) the term used in the WGSL spec.
Change-Id: Ie148a1ca8498698e91fdbb60e1aeb0d509b80630
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/78786
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
The current directory and namespace collides quite spectacularly with
the google benchmark include directory and namespace.
This becomes very hard to work around when there's a .cc file in src/
that wants to include "benchmark/benchmark.h", as MSVC appears to
resolve this to the relative path, while GCC and Clang resolve to the
compiler specified include directory.
Bug: tint:1383
Change-Id: Icc8891718d1d8a1b55c2ac4b2bb1487e8d09e629
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/78740
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
The `std::string file_path` carried around by every Source was very expensive for heap allocations.
Push this into the Source::File.
Bug: tint:1383
Change-Id: Id9e3bdef1cf24aea5f3c83f348c05f5cf8ef4bbb
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/78321
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Ben Clayton <bclayton@google.com>
There may very well be more places it can be used, but this updates
the easiest to identify cases that could be switched over with minimal
restructuring.
Change-Id: I5100f398731cc4e031c82548ac826d713d0a4cda
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/76640
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Brandon Jones <bajones@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
This transform converts all separate texture/sampler references
in a program into combined texture/samplers. This is required for GLSL,
which does not support separate texture/samplers.
As input, the transform requires a map from the unique sampler/texture
pairs previously gathered by the Resolver to strings, which will be
used as the names of the newly-generated combined samplers. Note that
binding points are unused by GLSL, and so are set to (0, 0) with
collision detection disabled.
All function signatures containing textures or samplers are rewritten,
as well as function calls and texture intrinsic calls. For texture
intrinsic calls, a placeholder sampler is used to satisfy the subsequent
Resolver pass (GLSL texture intrinsics do not require a separate sampler,
but WGSL intrinsics do). The placeholder is also used if the shader
contains only texture references (e.g., textureLoad).
Bug: tint:1366
Change-Id: Iff8407d28fdc2a8adac5cb655707a08c8553c389
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/77080
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
Fold both PromoteInitializersToConstVar and VarForDynamicIndex into this
new transform, with a config to enable either type of transformation.
This is almost a no-op change, except that VarForDynamicIndex required
ForLoopToLoop, while this tranformation in PromoteInitializersToConstVar
converts for-loops only as needed, so it doesn't do so when the
expression is in the for-loop initializer.
This transform will be extended to handle ensuring order of execution of
expressions.
Bug: tint:1300
Change-Id: I4d00984346a2c92b2d8563b459898f8f737589fd
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/77140
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Splits these sources out into a separate library target to make sure
that it is only built once.
Many of these symbols are used by tint_utils_io, and building with
shared libraries enabled fails if they are not present.
Change-Id: I501d302b2502b22357f5691f012cd56ebcfde478
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/75600
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Add google benchmark to the DEPs.
Implement a basic set of benchmarks for each of the writers and the WGSL parser.
Add build rules for CMake. GN build rules TODO.
Add a simple go tool (ported from Marl) to diff two benchmarks. Less
noisy than the one provided by google benchmark.
Bug: tint:1378
Change-Id: I73cf92c5d9fd2d3bfac8f264864fd774afbd5d01
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/76840
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
The plan is to reuse this datatype for the combine-samplers transform.
Bug: tint:1366
Change-Id: Icd2f4bd45b662f32fe9803e3485f1a54a2c42265
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/76320
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
This is what its called in the spec.
Issue: tint:1361
Change-Id: I512c4224191fd2bbf04522da2093872f79ee02a6
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/75581
Reviewed-by: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
FXC fails to compile code that assigns to dynamically-indexed fixed-size
arrays in structs on internal shader variables with:
error X3500: array reference cannot be used as an l-value; not natively
addressable
This CL detects this case, and transforms such assignments into copying
out the array to a local variable, assigning to that local, and then
copying the array back.
Also manually regenerate SKIPs for HLSL/FXC after this change, which
fixes 30 tests. Also exposes some "compilation aborted unexpectedly" now
that "array reference cannot be used as an l-value" has been fixed. For
tests that fail for both DXC and FXC, updating SKIPs to the DXC one to
help distinguish actual FXC bugs from valid errors.
Bug: tint:998
Bug: tint:1206
Change-Id: I09204d8d81ab27d1c257538ad702414ccc386543
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/71620
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Any struct which is used as the store type of a buffer variable needs
to have a block decoration. If that struct is nested inside an array
or another struct, we wrap it inside another struct first.
This removes the SPIR-V backend's reliance on the [[block]] attribute,
which will soon be deprecated and removed.
Bug: tint:1324
Change-Id: Ib6ad54f24a3e4a090da9faeed699f266abcb66ba
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/72082
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
If TINT_SYMBOL_STORE_DEBUG_NAME is 1, Symbol instances store a
`debug_name_` member initialized with the name of the identifier they
represent. This member is not exposed, but is useful for debugging
purposes.
Bug: tint:1331
Change-Id: Ia98e266aefc1ca26bbf30c6ece73d9eac8afdbd7
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/71780
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Fix dependency graph traversal for bitcasts. These were not being traversed, leading to an ICE if the bitcast type was an alias, as the symbol was not resolved for later use by the resolver.
Add missing validation for bitcasts. We were permitting any bitcast that wasn't a being cast to a pointer type, when the spec only allows:
* numeric_scalar to numeric_scalar
* vecN<numeric_scalar> to vecN<numeric_scalar>
Add lots of tests.
Fixed: chromium:1276320
Change-Id: I9e5487ec7649ac543f73fc878e7e282bf932d8cb
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/71681
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Migrate some of the validation logic over to use the results of behavior
analysis.
The most significant changes are:
* Unreachable-statements now consider merge-points of control flow. For
example, if all branches of a if-statement or switch-statement either
return or discard, the next statement will be considered unreachable.
* Unreachable statements are no longer an error, but a warning. See
https://github.com/gpuweb/gpuweb/issues/2378.
* Statements that follow a loops that does not break, or have a
conditional will now be considered unreachable.
* Unreachable statements produced by the SPIR-V reader are now removed
using the new RemoveUnreachableStatements transform.
Some other new changes include additional validation for the continuing
block for for-loops, to match the rules of a loop continuing block.
The new cases this validation is testing for are not expressible in
WGSL, but some transforms may produce complex continuing statements that
might violate these rules. All the writers are able to decay these
complex for-loop continuing statements to regular loops.
Bug: tint:1302
Change-Id: I0d8a48c73d5d5c30a1cddf92cc3383a692a58e61
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/71500
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
This change implements the behavior analysis for expressions and
statements as described in:
https://www.w3.org/TR/WGSL/#behaviors
This CL makes no changes to the validation rules. This will be done as a
followup change.
Bug: tint:1302
Change-Id: If0a251a7982ea15ff5d93b54a5cc5ed03ba60608
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/68408
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
Nothing currently does the analysis to calculate these.
Change-Id: Ia2103102fbf36109f357aebf32cdfda24d6d8155
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/68407
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
BUG=tint:1019
Change-Id: Ia462080877a97348c5589bfa71231a832a7ebfd3
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70081
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Add transform::Unshadow to renamed shadowed symbols. Required by a
number of other transforms.
Replace Resolver symbol resolution with dep-graph.
The dependency graph now performs full symbol resolution before the
regular resolver pass.
Make use of this instead of duplicating the effort.
Simplfies code, and actually performs variable shadowing consistently.
Fixed: tint:819
Bug: tint:1266
Change-Id: I595d1812aebe1d79d2d32e724ff90de36e74cf4b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70523
Reviewed-by: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
They are always used together, and can actually be simplified when
combined.
This transform cannot currently deal with shadowing, and will need
need to depend on a new 'unshadow' transform.
Fixes a long-standing bug where we'd get an ICE if we attempt to inline
a pointer let declaration with side-effects in a for-loop initializer.
Fixed: tint:1321
Bug: tint:819
Change-Id: I236fed688e33a4996e47310b5ece44c991b5249f
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70661
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
A find or return-default utility.
Rename `find_or_replace.h` to `map.h` which contains both these utilties that operate on maps.
Change-Id: Iaa76ea3f5c5a1210e413c131dd0556c126ee5d0a
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70521
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Performs a module-scope (global) declaration dependency analysis, so
that out-of-order global declarations can be re-ordered into dependency
order for consumption by the resolver.
The WGSL working group are currently debating whether out-of-order
declarations should be included in WebGPU V1, so this implementation
currently errors if module-scope declarations are declared out-of-order,
and the resolver does not currently use this sorted global list.
The analysis does however provide significantly better error diagnostics
when cyclic dependencies are formed, and when globals are declared
out-of-order.
The DependencyGraph also correctly now detects symbol collisions between
functions and types (tint:1308).
With this change, validation is duplicated between the DependencyGraph
and the Resolver. The now-unreachable validation will be removed from
the Resolver with a followup change.
Fixed: tint:1308
Bug: tint:1266
Change-Id: I809c23a069a86cf429f5ec8ef3ad9a98246766ab
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69381
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Reviewed-by: David Neto <dneto@google.com>
ArrayLengthFromUniform is needed for correct bounds checks on
dynamic storage buffers on D3D12. The intrinsic GetDimensions does
not return the actual size of the buffer binding.
ArrayLengthFromUniform is updated to output the indices of the
uniform buffer that are statically used. This allows Dawn to minimize
the amount of data needed to upload into the uniform buffer.
These output indices are returned on the HLSL/MSL generator result.
ArrayLengthFromUniform is also updated to allow only some of the
arrayLength calls to be replaced with uniform buffer loads. For HLSL
output, the remaining arrayLength computations will continue to use
GetDimensions(). For MSL, it is invalid to not specify an index into
the uniform buffer for all storage buffers.
After Dawn is updated to use the array_length_from_uniform option in the
Metal backend, the buffer_size_ubo_index member for MSL output may be
removed.
Bug: dawn:429
Change-Id: I9da4ec4a20882e9f1bfa5bb026725d72529eff26
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69301
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Austin Eng <enga@chromium.org>
resolver.cc has grown very large, and is difficult to navigate.
The logic is identical to before, but validation logic has been moved to its own .cc file.
Bug: tint:1313
Change-Id: I4b7f3208815efe8ff02f2ad006b7cd31b5e37006
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69380
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Implements MultiplanarExternalTextureTransform to allow transforming a
texture_external binding into two texture_2d<f32> bindings and a uniform
buffer binding. Transforms textureSampleLevel and textureLoad calls with
a texture_external parameter into custom functions that can handle both
single-plane RGBA or bi-planar YUV. Includes tests.
Bug: dawn:1082
Change-Id: Icb6d8b0f3773feca01c833171f07230c3531f3aa
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/68620
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Add a new 'Target' to the ast::CallExpression, which can be either an
Identifier or Type. The Identifier may resolve to a Type, if the Type is
a structure or alias.
The Resolver now resolves the CallExpression target to one of the
following sem::CallTargets:
* sem::Function
* sem::Intrinsic
* sem::TypeConstructor
* sem::TypeCast
This change will allow us to remove the type tracking logic from the WGSL
parser, which is required for out-of-order module scope declarations.
Bug: tint:888
Bug: tint:1266
Change-Id: I696f117115a50981fd5c102a0d7764641bb755dd
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/68525
Reviewed-by: David Neto <dneto@google.com>
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Nothing yet creates or uses these.
Also add Constant to sem::Call.
These will be needed for TypeConstructors / TypeCasts.
Bug: tint:888
Change-Id: I5b8c64062f3262bdffd210bb012db980c5610b26
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69107
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
An element-wise vector transformation utility function.
Similar to JS/TS's map() method on arrays.
Change-Id: I4baf52daa918f2e7bf5f9b4af13894fe66826f7c
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69103
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
This a more powerful version of the ParamType class.
It provide all the same information as before, plus function return type
and number of parameters.
Change-Id: If03feed0c1b94434fa95340b6b6277621b4f81b4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69100
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
ConstructorExpression is abstract, and now only has a single class deriving
from it - TypeConstructorExpression. Just use that instead.
Bug: tint:888
Change-Id: I7ee52ad645bcd8a8a68710c63a1fdf834b5b2a24
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/68842
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
The object is not always an array. The index can be applied to vectors
too.
Change-Id: Ifb63d1862090d28cb48d692870e9dd01ddbce5df
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/68841
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
Literals are now expressions, so in keeping with all the other
expression types, suffix the class name with Expression.
I'm not overly keen on requiring everything to have an Expression
suffix, but consistency is better than personal preference.
Bug: tint:888
Change-Id: Ida1f1b98c71d5d0fe6399bca938010cd5d3a00c3
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/68840
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
Just make Literal an expression. The ScalarConstructorExpression
provides no real value, aside from having a ConstructorExpression base
class that's common between ScalarConstructorExpression and
TypeConstructorExpression. TypeConstructorExpression will be folded into
CallExpression, so this hierarchy will serve no purpose.
First step in resolving the parser ambiguity of type-constructors vs
type-casts vs function calls.
Bug: tint:888
Change-Id: I2585d5ddbf6c0619a8f24c503e61ebf27c182ebe
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/68524
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
Use a transform to convert these to the vector form for the MSL and
SPIR-V backends.
MSL only has the scalar form from version 2.0 onwards.
Fixed: tint:1123
Change-Id: I384abd9872d9eae52a10a37cbd6aa96004692e9c
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/67360
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
James Price
Antonio Maiorano
Ben Clayton
Stephen White
Brandon Jones
Ryan Harrison
Austin Eng
Brandon Jones