microsoft / microsoft/DirectXShaderCompiler

NonUniformResourceIndex not propagated on call arguments

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bug correctness
Dominant language
C++
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Merged PRs (30d)
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Description

Description
When passing an array of resources which is itself a non-uniform resource array access the NURI bit is not propagated correctly.

Steps to Reproduce
https://godbolt.org/z/qf9jK413W

Actual Behavior
NURI is not set on the resources for the Inputs.

Environment

  • DXC version: main
  • Host Operating System: all

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked Godbolt reproduction using DXC main and confirm that the NURI bit is missing from resources passed through call arguments. Trace how a non-uniform resource array is handled for call inputs, then verify that NURI is propagated correctly on those resources across the reproduction.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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