Remove the deprecated hlsl_coopvec_poc capability that was for POC CoopVec#9213
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jkwak-work merged 2 commits intoshader-slang:masterfrom Dec 6, 2025
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This commit removes all POC (Proof of Concept) cooperative vector support that was deprecated since May 2025. The POC support was added as a backward compatibility layer for NVIDIA's DXC branch, but the official Microsoft DXC now has native cooperative vector support. Changes: - Remove hlsl_coopvec_poc and hlsl_coopvec_poc_sm_6_9 capability definitions - Remove all POC-specific intrinsic implementations from hlsl.meta.slang - Remove POC code generation logic from emit layer (slang-emit-c-like.cpp/h) - Remove POC type emission from HLSL backend - Update test files to remove POC capability requirements - Update documentation to remove POC references The standard cooperative vector implementation remains and is now the only supported approach for HLSL targets. Resolves shader-slang#9209
jkwak-work
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what's the alternative? DXC doesn't standardize it yet, right? So we just drop the support now? |
kaizhangNV
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Dec 5, 2025
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DXC did standardized it. And we implemented as the regular sm_6_9. The Slang user was able to use sm_6_9 successfully: |
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When generating the release note, the script was missing the new line characters for the breaking changes. The following is an example of the problem: > === Breaking changes === 72761cc Add error diagnostic for integer literals that don't fit into uint64_t (#9208 Remove the deprecated hlsl_coopvec_poc capability that was for POC CoopVec (#9213 Add type-flow analysis pass for specialized dynamic dispatch (#7968) With this PR, it will be fixed as below: >=== Breaking changes === 72761cc Add error diagnostic for integer literals that don't fit into uint64_t (#9208) cc73e8d Remove the deprecated hlsl_coopvec_poc capability that was for POC CoopVec (#9213) 4280f24 Add type-flow analysis pass for specialized dynamic dispatch (#7968)
gtong-nv
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Dec 15, 2025
When generating the release note, the script was missing the new line characters for the breaking changes. The following is an example of the problem: > === Breaking changes === 72761cc Add error diagnostic for integer literals that don't fit into uint64_t (#9208 Remove the deprecated hlsl_coopvec_poc capability that was for POC CoopVec (#9213 Add type-flow analysis pass for specialized dynamic dispatch (#7968) With this PR, it will be fixed as below: >=== Breaking changes === 72761cc Add error diagnostic for integer literals that don't fit into uint64_t (#9208) cc73e8d Remove the deprecated hlsl_coopvec_poc capability that was for POC CoopVec (#9213) 4280f24 Add type-flow analysis pass for specialized dynamic dispatch (#7968)
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This commit removes all POC (Proof of Concept) cooperative vector support that was deprecated since May 2025. The POC support was added as a backward compatibility layer for NVIDIA's DXC branch, but the official Microsoft DXC now has native cooperative vector support.
Changes:
The standard cooperative vector implementation remains and is now the only supported approach for HLSL targets.
Resolves #9209
Related to #7108