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Add type tests for WGSL immediate pointers#4675

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gpuweb:mainfrom
shaoboyan091:pr/immediate-type-tests
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Add type tests for WGSL immediate pointers#4675
shaoboyan091 wants to merge 1 commit into
gpuweb:mainfrom
shaoboyan091:pr/immediate-type-tests

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@shaoboyan091 shaoboyan091 commented Jun 25, 2026

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Extends the WGSL immediate address space validation coverage to the pointer, ref, and enumerant type tests:

  • types/pointer.spec.ts: add immediate to missing_type, address_space, and access_mode; add ptr<immediate, …> store-type cases to ptr_not_instantiable (bool, atomic, fixed/runtime array, struct-with-array).
  • types/ref.spec.ts: ref<immediate, T> cannot be written as an explicit type.
  • types/enumerant.spec.ts: add the immediate enumerant.

This patch extends type validation for the `immediate` address space.

The pointer tests cover `ptr<immediate>` parsing, missing store types,
invalid access modes, read-only pointer use, and immediate store types
that must be rejected, including arrays and atomics.

The type suites also recognize `immediate` as an address-space
enumerant and check that `ref<immediate, T>` is not a nameable type.
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Results for build job (at b01536d):

-webgpu:shader,validation,types,enumerant:decl_value:* - 26 cases, 104 subcases (~4/case)
+webgpu:shader,validation,types,enumerant:decl_value:* - 27 cases, 108 subcases (~4/case)
-webgpu:shader,validation,types,pointer:missing_type:* - 10 cases, 10 subcases (~1/case)
-webgpu:shader,validation,types,pointer:address_space:* - 14 cases, 14 subcases (~1/case)
-webgpu:shader,validation,types,pointer:access_mode:* - 30 cases, 30 subcases (~1/case)
+webgpu:shader,validation,types,pointer:missing_type:* - 12 cases, 12 subcases (~1/case)
+webgpu:shader,validation,types,pointer:address_space:* - 16 cases, 16 subcases (~1/case)
+webgpu:shader,validation,types,pointer:access_mode:* - 36 cases, 36 subcases (~1/case)
-webgpu:shader,validation,types,pointer:ptr_not_instantiable:* - 10 cases, 10 subcases (~1/case)
+webgpu:shader,validation,types,pointer:ptr_not_instantiable:* - 15 cases, 15 subcases (~1/case)
+webgpu:shader,validation,types,ref:not_typeable_ref_immediate:* - 7 cases, 7 subcases (~1/case)
-TOTAL: 283163 cases, 2326068 subcases
+TOTAL: 283186 cases, 2326094 subcases

@shaoboyan091 shaoboyan091 requested a review from jrprice June 26, 2026 08:55
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