I should have fixed the problem.
weird volumetric lighting glitch
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Please upload a testscene that allows developers to reproduce the problem, and attach some images.
Please upload a testscene that allows developers to reproduce the problem, and attach some images.
- FarbigeWelt
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Scattering volume: BCD succeeds where OIDN fails
Looks like there is still a good reason to keep BCD on board of LuxCorerRender.
Scenes with scattered light, homogeneous volume or heterogeneous volume, lead on openCL to a strange distributed noise pattern even. These patterns do not disappear with 2500 samples. OIDN is currently not able to denoise these scattered patterns as shown in last post. OIDN creates organic very disturbing looking patterns.
But there are two solutions. One is to switch to BiDir, Metropolis,. Even with a noisy image OIDN makes a good result with the BiDir render.
Another one is to render openCL, what is much faster to achieve the same sample count, and use 'good old' BCD. Just switch denoiser type to BCD with default values and you get following results. Okay, BCD is slower. BCD plus openCL is still much faster than BiDir plus OIDN.
Scenes with scattered light, homogeneous volume or heterogeneous volume, lead on openCL to a strange distributed noise pattern even. These patterns do not disappear with 2500 samples. OIDN is currently not able to denoise these scattered patterns as shown in last post. OIDN creates organic very disturbing looking patterns.
But there are two solutions. One is to switch to BiDir, Metropolis,. Even with a noisy image OIDN makes a good result with the BiDir render.
Another one is to render openCL, what is much faster to achieve the same sample count, and use 'good old' BCD. Just switch denoiser type to BCD with default values and you get following results. Okay, BCD is slower. BCD plus openCL is still much faster than BiDir plus OIDN.
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
MacBook Air with M1
MacBook Air with M1
Re: weird volumetric lighting glitch
But isn't this result still wrong?
Look at the corners of the room - they are completely blurred.
Judging from the noisy images it looks to me like they should be sharp.
Try to use a texture on the back wall and see what the denoisers do to that.
Look at the corners of the room - they are completely blurred.
Judging from the noisy images it looks to me like they should be sharp.
Try to use a texture on the back wall and see what the denoisers do to that.
- FarbigeWelt
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Re: weird volumetric lighting glitch
EDIT
Instead of a texture I placed a spot light for the projection of the test picture. The comparison of BCD and OIDN. BCD keeps details and flatness. OIDN creates wrinkled paper like faces and looses details.
Last edited by FarbigeWelt on Mon Jun 10, 2019 11:50 am, edited 1 time in total.
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
MacBook Air with M1
MacBook Air with M1
Re: weird volumetric lighting glitch
lord Dade has blessed us once again!
- FarbigeWelt
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Scattering volume: BCD vs. OIDN (2:0)
![Smile :)](./images/smilies/icon_e_smile.gif)
![Wink ;-)](./images/smilies/icon_e_wink.gif)
EDIT
And this is the last image of the little investigation. I cannot see any wrong behavior of LuxCoreRender. There is obviously everything okay from material volume to camera volume including indirect cache.
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
MacBook Air with M1
MacBook Air with M1
Re: weird volumetric lighting glitch
I LOVE YOUR TESTS
- FarbigeWelt
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Re: weird volumetric lighting glitch
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
MacBook Air with M1
MacBook Air with M1
Re: weird volumetric lighting glitch
Still appears to be something present...
RAW render CONVERGENCE mix with SAMPLECOUNT Scene
![Confused :?](./images/smilies/icon_e_confused.gif)
RAW render CONVERGENCE mix with SAMPLECOUNT Scene
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