NVIDIA / NVIDIA/nvidia-settings
blendAfterWarp = True has no effect
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- Dominant language
- C
- Stars
- 345
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- 92
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Description
I've been successfully implementing the code of nv-control-warpblend.c in my three projector flight simulator display on a curved screen. However, the blending should be done in display and not texture coordinates.
For me the blendAfterWarp argument in XNVCTRLSetScanoutIntensity has no effect. Also in the sample code of this github repo. The blending always occurs in Texture coordinates before warping.
Any chance of verifying this?
Small hint: I am using a regular GTX (not Quadro) card, but warping works like a charm. So thanks so much for providing this interface, it is so much more efficient than all the commercial warping solutions!!!
OS: Ubuntu 22.04
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Research direction
Start with nv-control-warpblend.c and the XNVCTRLSetScanoutIntensity entry point, then reproduce the sample behavior on the reported Ubuntu 22.04 GTX setup. Compare the output with blendAfterWarp enabled and disabled; done means confirming whether the argument changes blending coordinates or documenting the driver/interface limitation.
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Assessment
- Tech stack
- c, ubuntu
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100