[HLSL] Add LinAlg ThreadGroup matrix arithmetic coverage#8674
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JoeCitizen wants to merge 14 commits into
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[HLSL] Add LinAlg ThreadGroup matrix arithmetic coverage#8674JoeCitizen wants to merge 14 commits into
JoeCitizen wants to merge 14 commits into
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Use the shared MatrixUse parameter for the OuterProduct result and set it to Accumulator, matching proposal 0035 and the public dx::linalg API. Add a host-side invariant to prevent the legacy A-use declaration from returning. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Create SRV buffers without UAV flags and transition them for both pixel and non-pixel shader access. Use a direct resource-initialization list so the graphics-only pixel state is legal. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Add typed F16, F32, I32, and U32 matrix data with safe byte encoding, rectangular row/column-major storage mapping, and explicit exact, permitted-result, or excluded comparison policy. Cover offsets and padded strides with independent host goldens, and migrate the existing CopyConvert tests onto the oracle. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
This was referenced Jul 24, 2026
Handle packed row or column byte-count overflow before using the result, and include raw F32 bits in exact mismatch diagnostics. Cover adjacent float bit patterns in the host oracle test. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Add ABI-checked wrappers for the six D3D12 Linear Algebra capability query categories and explicit applicability classification. Gate the rectangular F32 CopyConvert case using concrete supported wave sizes. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Compile capability-gated CopyConvert coverage at the exact wave size whose MatrixConstruction support was queried. Keep mandatory baseline cases on the existing ranged WaveSize attribute. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
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Validate multiplication support flags per operation, exhaustively check the preview D3D12 ABI mirrors, and preserve query-backed optional skips in HLK mode. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Add rectangular Length/GetCoordinate/GetElement coverage and the specified Get/Set out-of-bounds behaviour. Capture thread-local matrix records without UAV races and gate optional F32 cases at the exact queried wave size. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Add bounded raw descriptor-table bindings and independent whole-buffer oracles for LinAlg descriptor operations. Cover non-zero offsets, padded strides, row/column-major transfer, descriptor bounds, and capability-gated atomic accumulation. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Add race-free Wave and ThreadGroup group-shared transfer coverage for row/column-major layouts, non-zero offsets, padded strides, and exact whole-buffer guards. Add capability-gated Wave atomic accumulation with coordinate-derived values, while keeping cross-component conversion out of scope pending runtime conformance. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Add mixed F16/F32 CopyConvert cases and verify that conversion leaves the source matrix unchanged. Cover exact integer widening, RTNE plus saturating float narrowing, and capability-gated FP8 encoding and round-trip semantics with independent host oracles. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Refactor MatVec execution tests around independent matrix, vector, bias, and output resources with host-derived exact expectations. Add required interpreted input tuples, non-uniform layout coverage, unsigned output, and independent bias validation behind the runtime ThreadVectorMatrixMultiply capability query. The mandatory native F32-to-SInt8 case remains active and exposes the current preview WARP conversion defect. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Add capability-gated Wave matrix multiply, multiply-accumulate, and B-use accumulate cases with independent exact host oracles. Make the accumulator-layout query select an observable A-use or B-use execution path. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
Add capability-gated ThreadGroup matrix multiply and multiply-accumulate cases with typed group-shared staging and exact host-derived results. Select and compile at the concrete wave and thread-group sizes advertised for each type and shape. Assisted-by: GitHub Copilot Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 83725f5d-8e98-4c1d-91ee-ad47629e007b
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Summary
All three cases are capability-gated because the corresponding format and shape tuples are exposed through the ThreadGroup matrix-multiply query.
Validation
ExecHLSLTeststarget1.65535.20-preview, Agility SDK1.721.2-preview, andExperimentalShaders=*: 3 passed at wave size 4 and thread-group size 4S2, A/B/Accumulator usesU0/U1/U2, exact F16/F32/I32 shapes, group-sharedaddrspace(3)loads/stores, and the expected multiply or multiply-accumulate operationLinAlgTests.cppdirectly against the preview D3D12 headersgit diff --check, and an independent graphics correctness review passNo physical GPU, native multi-wave ThreadGroup configuration, or packaged-HLK execution is claimed.
Stack
This draft is stacked on PR #8673, which is stacked on PR #8672, PR #8671, PR #8670, PR #8669, PR #8668, PR #8667, PR #8666, PR #8665, and PR #8662. Until those ancestors land, this diff contains their commits as well. The ThreadGroup arithmetic change itself is commit
3984e07b0.This remains a draft for named human review. The reviewer should verify the ThreadGroup capability query inputs, selected wave/group sizes, full-group participation, group-shared barriers and strides, component/use/scope encodings, and exact host oracle before requesting maintainer review.
Refs #7841
Refs #8556
Refs #8558
Refs #8652
Assisted-by: GitHub Copilot