microsoft / microsoft/DirectXShaderCompiler
Can't get cbuffer's variables from a linked shader
Open
Nobody has claimed this yet.
bug
reflection
shader-linking
- Dominant language
- C++
- Stars
- 3.7k
- Forks
- 900
- Avg merge
- 2d 11h
- Merged PRs (30d)
- 44
Description
Reflect a linked shader, the D3D12_SHADER_BUFFER_DESC::Variables of its cbuffers are 0.
Traced a little bit. The DxilStructAnnotation of that struct is NULL, causing the variables of that cbuffer can't be reflected.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing reflection for a linked shader and trace the cbuffer path around DxilStructAnnotation, which the issue identifies as NULL. Determine why the annotation is absent and verify that D3D12_SHADER_BUFFER_DESC::Variables reports the linked cbuffer variables when the issue is fixed.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- compilers, computer-graphics
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100