Add design doc describing how to translate from SPIR-V Vulkan
style inputs/outputs to WGSL-style inputs as shader entry points,
and outputs as shader return value.
Change-Id: If0dc5f07542ccf2db95ed648a34f73a06e20a5a4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/38961
Reviewed-by: Alan Baker <alanbaker@google.com>
Commit-Queue: David Neto <dneto@google.com>
Nothing currently generates these.
Resolver currently doesn't know how to handle these.
Backends currently stubbed enough to build without warnings.
Bug: tint:727
Change-Id: I4b9863ae098b903b51a63c36c10bc6e390efbbb3
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50746
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
Reviewed-by: James Price <jrprice@google.com>
There's now one remainin use of the semantic info in the WGSL writer - the transformation of [[offset]] into padded fields.
This does not belong in the WGSL writer, but instead part of the transform::Wgsl sanitizer.
Bug: tint:798
Change-Id: I95ba11f022c41150cc12de84a4085cd7d42019fe
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50822
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
Reviewed-by: James Price <jrprice@google.com>
To declare a local variable, we write `var name : type`, not `var<function> name : type`.
This change fixes all the places where we were feeding StorageClass::kFunction into variable declarations.
Note that the resolved, semantic variable correctly infers the `kFunction` StorageClass.
Change-Id: I6221fabae1de0435044f29b9a91808421d5cace6
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50821
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Commit-Queue: David Neto <dneto@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
And update tools/lint to use cpplint.py from path.
DEPS was fetchling cpplint from `{chromium_git}/third_party/cpplint/google/styleguide`.
This repo no longer contains cpplint, and now instead is maintained in depot_tools.
The version in depot_tools contains a fix for python3.
Fixed: tint:794
Change-Id: I06c3f8a628ffa3e70887464b1da063b465c05c65
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50743
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: David Neto <dneto@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
Add a new parameter to BindingRemapper::Remappings that allows resulting binding points to collide.
When enabled, the output of the transform contains two or more module-scoped variables with the same binding point, used by the same entry point, then these variables will be decorated with an internal decoration to disable validation for the collision.
This is to work around collisions generated for the HLSL backend where the variables actually exist in different register classes, which is permitted by D3D12.
The transform will only generate these decorations if it needs to.
Fixed: tint:797
Change-Id: Id8a87523801bd0cd0dd54227ebabd4299bc20c27
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50742
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: James Price <jrprice@google.com>
An [[internal]] decoration that specifically disables certain validation checks.
Begin with a single kFunctionHasNoBody mode.
Migrate the Resolver to using this instead of allowing any InternalDecoration to disable the checks for no-body.
Bug: tint:797
Change-Id: I213b9a6844a456775ede06d60e456d9f77a449d0
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50741
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Variable() is called for globals, locals and parameters. Much of the logic is the same.
Move all the common logic down into Variable(). This:
* Removes some yucky default parameters
* Adds type validation that was missing for globals (broken tests fixed)
* Gives me a single place to implement the Reference type wrapping
Bug: tint:727
Change-Id: I70f4a3603d7fa781da938508aa2a1bc80ec15d77
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50580
Auto-Submit: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Removes the texture_external overload for textureSample and replaces it
with a texture_external overload of textureSampleLevel to match merged
spec. Adds a transform that adds the implicit level parameter to
textureSampleLevel. Modifies unit tests to reflect change.
Bug: dawn:728
Change-Id: I2dbc9232b4343db1075be79fda0054231860f3b1
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50701
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Adds a transform that adds an additional 'level' parameter to textureLoad calls
when used with a texture_external. Adds a test for the textureLoad
transform. Additionally adds a test for calls to textureDimensions with
a texture_external.
Bug: dawn:728
Change-Id: I613ce8185e9a4c49529fd8e48323e586c95dde04
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50420
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Validate that:
* That resource variables have resource bindings
* Only resource variables have resource bindings
* That a [[binding]] decoration is paired with a [[group]]
* That binding points are not reused in the same entry point
Fixed: tint:235
Fixed: tint:645
Bug: tint:645
Change-Id: I2542934b4c6a2b4bbde48242932c04c796033a90
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50500
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
These originate from a time before Castable, and there were hand-written Is<T>() methods on each of the base types.
Castable has its own tests that ensure the Is<T>() and As<T>() work as expected.
We don't need to check that this logic works for every type that derives from castable.
Change-Id: Iaa376dc4b4b5ee413a83fc5f9113cd3ef91dfe4a
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50540
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: James Price <jrprice@google.com>
We don't want the WGSL parser to have to maintain type lookups.
If the WGSL language is updated to allow module-scope variables to be declared in any order, then the single-pass approach is going to fail horribly.
Instead do the check in the Resovler.
With this change, the AST nodes actually contain the correctly declared storage class.
Fix up the SPIR-V reader to generate StorageClass::kNone for handle types.
Fix all tests.
Bug: tint:724
Change-Id: I102e30c9bbef32de40e123c2676ea9a281dee74d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50306
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: James Price <jrprice@google.com>
