[HLSL] Add typed LinAlg CPU matrix oracle#8666
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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
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Summary
The oracle in this PR is intentionally matrix-valued. Future descriptor OOB store/accumulate coverage must extend it with whole-destination-buffer candidates rather than treating untouched bytes as part of a matrix result.
Validation
ExecHLSLTeststargetLinAlgCPUOracleTests::TypedMatrixBufferRoundTriphost test, including independent raw-byte goldens for all four types, both memory layouts, offsets, padding, transpose and whole-result candidate semantics1.65535.20-previewwith D3D12 Agility SDK1.721.2-previewandExperimentalShaders=*git diff --checkpassNo physical GPU or HLK lab execution is claimed. No new LinAlg operation or component-type runtime coverage is added; CopyConvert is the representative migration only.
Stack
This draft is stacked on PR #8665, which is stacked on PR #8662. Until those ancestors land, this diff contains their commits as well. The typed-oracle change itself is commit
58fec81cc.Refs #7841
Refs #8649
Refs #8546
Assisted-by: GitHub Copilot