NVIDIAGameWorks / NVIDIAGameWorks/rtx-remix
[Runtime Bug]: Viewport changes causes 3D stretching
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Description
Describe the bug
When the D3D9 viewport is not set to the full window the rendered image is stretched incorrectly.
How do you reproduce the bug?
Open a game with an altered viewport
Deus Ex when in conversations is one example where on a 1280x720 window the viewport is set as such:
| Name | Value | Type | |
|---|---|---|---|
| ◢ | d3dViewport | {X=0 Y=74 Width=1280 ...} | _D3DVIEWPORT9 |
| X | 0 | unsigned long | |
| Y | 74 | unsigned long | |
| Width | 1280 | unsigned long | |
| Height | 495 | unsigned long | |
| MinZ | 0.00000000 | float | |
| MaxZ | 1.00000000 | float |
What is the expected behavior?
Non stretch 3D graphics are rendered into the specified viewport.
Version
remix-main+bccdf94e bridge: remix-main+8248167a
Logs
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Crash dumps
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Media
Without remix:
With remix:
https://github.com/user-attachments/assets/8fe9f574-eeb7-45f3-9d77-903504c6b4ae
Contributor guide
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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
Reproduce the issue in Deus Ex during conversations with a 1280x720 window and the altered D3D9 viewport described here. Trace the runtime's viewport handling for that path; done means 3D graphics retain their proportions and render within the specified viewport rather than stretching.
Written by the indexing model from the issue text.
Assessment
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100