Vertex debugger picks wrong vertex when using point topology

[thatcosmonaut]

Description

I am trying to debug a vertex shader running on point topology, but when I select a vertex in the mesh viewer to debug, the vertex input in the vertex debugger is different from the one I selected.

Steps to reproduce

1. Render some point topology.
2. Select a vertex to debug in the mesh viewer.
3. The vertex in the debugger will be different from the selected vertex.

Strangely, the vertex selected for the debugger seems to be different every single time.

My application is proprietary and fairly complex - I'll try to work on a simpler test case to reproduce. That said, the rest of the rendering uses triangle list topology and does not have this problem.

Environment

• RenderDoc version: 1.21
• Operating System: Fedora 36
• Graphics API: Vulkan

[baldurk]

Without a reproducible test case I cannot investigate this. It is not feasible for me to guess what the problem is without being able to see it myself. If you can't share a capture of your program here publicly you can also email me privately.

[baldurk]

Closing this due to lack of activity and no further information to investigate.