slang.git/tests/autodiff, branch master

parser: Avoid dropping modifiers when splitting list (#8546)

2025-10-08T23:11:10+00:00

Fix for a linked list usage bug; avoids dropping any modifiers when moving type modifiers from a linked list of modifiers into their own linked list. Since this change results in no_diff modifiers to traditional functions ending up on the return type instead of the function (due to the order they're parsed in), we duplicate the no_diff modifier onto the function declaration after the fact. Includes a test for the original issue. The no_diff redistribution case is covered by a slangpy device test case. Fixes #8332 --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

Fix the missing derivative member check (#8569)

2025-10-02T22:23:53+00:00

Close #8568. The root cause of this issue is that when the struct is indirectly inherited from IDifferentiable type, we will not check the reference of the DerivativeMember attribute. This PR fixes this issue by checking the DerivativeMember attribute right before synthesize the requirement methods of IDifferentiable interface.

Lookup refactor (#8467)

2025-09-23T16:06:44+00:00

Close #8201. This PR unify the lowering logic for LookupDeclRef of an interface requirement. We will always lower this AST node to a LookupWitness IR. The key of this IR is the special witnessTableType `ThisTypeWitness`, this witness Table is simply a wrapper for an interface type. Our current specialization pass doesn't handle this kind of LookupWitness IR at all, so we will also add the specialization of this_type IR as well.

fix a crash when using type equality constaint (#8515)

2025-09-23T15:12:09+00:00

Close #8193. When constructing `TransitiveTypeWitness` node, we should check if there is operand that represents two equal times. Currently, we only check whether the operand is `TypeEqualityWitness`, which is not good enough, because a `DeclaredSubtypeWitness` could also be representing two same types, in that case, we should also const fold this kind of witness. Fails to do so, we could finally ends up with a generating a lookup witness IR on a generic parameter that is not supposed to be looked up.

render-test: Change D3D12 default to sm_6_5 (#8320)

2025-09-02T23:43:48+00:00

Changes default for render-test to sm_6_5. Since sm_6_5 is the new default, remove the -use-dxil option, add -use-dxcb option Remove -use-dxil option from all test cases. Add -use-dxcb to two tests that needed it. Fixes #7611

[CBP] Pointer frontend changes + groupshared pointer support (#7848)

2025-08-29T22:52:34+00:00

Resolves #7628 Resolves: #8197 Primary Goals: 1. Add `Access` to pointer 2. AddressSpace::GroupShared support for pointers (SPIR-V) 3. Add `__getAddress()` to replace `&` * `&` is not updated to `require(cpu)` since slangpy uses `&`. This means we must: (1) merge PR; (2) replace `&` with `__getAddress()`; (3) add `require(cpu)` to `&` Changes: * Added to `Ptr` the `Access` generic argument & logic (for `Access::Read`). * Moved the generic argument `AddressSpace` from `Ptr` to the end of the type. * Added pointer casting support between any `Ptr` as long as the `AddressSpace` is the same * Disallow globallycoherent T* and coherent T* * Disallow const T*, T const*, and const T* * Fixed .natvis display of `ConstantValue` `ValOperandNode` * Support generic resolution of type-casted integers * Added `VariablePointer` emitting for spirv + other minor logic needed for groupshared pointers Breaking Changes: * Anyone using the `AddressSpace` of `Ptr` will now have to account for the `Access` argument * we disallow various syntax paired with `Ptr` and `T*` --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

Fix issue of double lowering issue a differentiable function (#8182)

2025-08-18T16:30:10+00:00

Close #8054. For detailed root cause is at: https://github.com/shader-slang/slang/issues/8054#issuecomment-3189579508

Enable CUDA Test Enablement - Batch 1: Autodiff Tests (1-16) (#8139)

2025-08-18T05:16:47+00:00

Enable CUDA testing for batch 2 (#8147)

2025-08-12T18:19:15+00:00

Enable CUDA for the tests listed in issue #8078 This requires a minor CUDA prelude change, adding some math functions.

Fix 7723 - Add autodiff tests (#7919)

2025-08-06T17:23:19+00:00

* Fix 7723 - Add autodiff tests * Update bug-1.slang Adding Vulkan