The refactored CanonicalizeEntryPointIO transform makes it much easier
to handle SPIR-V style IO as well, and doing this removes a lot of
duplicated code. Remove all of the SPIR-V transform code for shader IO
and vertex point size.
Bug: tint:920
Change-Id: Id1b97517619b4d2fd09b45d5aee848259f3dfa77
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60840
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This option is passed through to the CanonicalizeEntryPointIO
transform, which adds it to the set of builtin shader outputs for all
vertex shaders in the module.
Bug: tint:1000
Change-Id: Ibba4adde2c468b11ebfd7012fcb42ee48aad04e4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60522
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This is a major reworking of this transform. The old transform code
was getting unwieldy, with part of the complication coming from the
handling of multiple return statements. By generating a wrapper
function instead, we can avoid a lot of this complexity.
The original entry point function is stripped of all shader IO
attributes (as well as `stage` and `workgroup_size`), but the body is
left unmodified. A new entry point wrapper function is introduced
which calls the original function, packing/unpacking the shader inputs
as necessary, and propagates the result to the corresponding shader
outputs.
The new code has been refactored to use a state object with the
different parts of the transform split into separate functions, which
makes it much more manageable.
Fixed: tint:1076
Bug: tint:920
Change-Id: I3490a0ea7a3509a4e198ce730e476516649d8d96
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60521
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Allows transforms to assert their dependencies have been run before they
are.
Also allows the backends to validate that their sanitizers have been run
before they're used.
Change-Id: I1e97afe06f9e7371283bade54bbb2e2c41f87a00
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/55442
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Reviewed-by: James Price <jrprice@google.com>
The CanonicalizeEntryPointIO transform now takes an optional config
option for a fixed sample mask. If there was no sample mask in the
authored shader, add one and return the fixed mask, otherwise AND the
fixed mask with the authored value.
Add a config option to the MSL sanitizer to receive a fixed sample
mask and pass it through to CanonicalizeEntryPointIO.
Bug: tint:387
Change-Id: I1678d915b19a718005d5832c5d624809ee432587
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/55520
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Add a config parameter for the CanonicalizeEntryPoint transform that
selects between emitting builtins as parameters (for MSL) or struct
members (for HLSL).
This fixes all of the shader IO issues in Tint's E2E tests for MSL.
Fixed: tint:817
Change-Id: Ieb31cdbd2e4d96ac41f8d8515fd07ead8241d770
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/53282
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Use the variable storage class to determine the correct builtin to use
in the SPIR-V generator.
Added a deprecation warning for frag_coord.
Bug: tint:714
Change-Id: I5ad4956f9345e2f39f4af16e84668dec345ac82e
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/47742
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Commit-Queue: Ben Clayton <bclayton@google.com>
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Reviewed-by: Ben Clayton <bclayton@google.com>
After the transform, an entry point's parameters will be aggregated
into a single struct, and its return type will either be a struct or
void. All structs in the module that have entry point IO decorations
will have exactly one pipeline stage usage.
This will be used to sanitize entry points for the MSL and HLSL
generators.
Change-Id: I7d2fcfba961d2e20326086964207747d573b6e05
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/46500
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Commit-Queue: Ben Clayton <bclayton@google.com>
James Price
Ben Clayton