Forums Solaris and Karma Poor gaussian splatting render quality

Poor gaussian splatting render quality

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Nedsch
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I made my first experiments with gaussian splatting. But the render quality in Karma is very bad compared to the previews of Lichtfeld Studio and SuperSplat. I imported the .ply file and set a Bake GSplat node.
Have I missed something?

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Nedsch
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I made another test. It’s really disappointing. Even the preview in SOPs looks much better than the XPU rendering (with and without denoising).

Am I the only one who thinks so?

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anglereserve
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Yea, I'm having the same issue. I'm not sure how to fix it. The splats I'm testing look fine in Nuke but not Karma.
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Nedsch
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After doing a bit more research, I’ve come to the conclusion that there’s no solution for Karma. I hope that changes. For now, it’s probably better to use Octane. But I haven’t subscribed to it at the moment.
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tamte
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try switching Advanced/Sampling/Pixel Oracle to Uniform
Tomas Slancik
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Nedsch
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tamte
try switching Advanced/Sampling/Pixel Oracle to Uniform
Cool, thanks for the tip. It’s not quite up to the preview quality of Houdini VK, but it’s definitely an improvement.
Edited by Nedsch - April 22, 2026 11:23:30
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anglereserve
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tamte
try switching Advanced/Sampling/Pixel Oracle to Uniform

That seems to help, Thanks! This plus Optix or NeatVideo might be the sweet spot for now. Agree that it's looking better in Houdini VK (and Nuke).
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