Thanks. I definitely remember that from the help file. Unfortunately Im still having issues.
I tried a render with your settings:
Adaptive QMC 1,4
Material glossy subdivs:50
QMC noise amount:.001
Here are render settings with Adaptive Subdivision:
Adaptive Subdivision 0,3 threshold .05
Material glossy subdivs:8
QMC noise amount:.005
If you again, take those into the ram player and scrub between the two, its very apparent on the chair and wall to the left. The floor looks pretty similiar now, but the fine detail on the wall is causing major noise using the adaptive qmc. So it appears to be related to fine detail with textures not just glossies?
Once again, the speed differences are apparent, but dont know what I can do to up the quality of the adaptive qmc version. I dont mind if it takes as long as the adaptive subdivision at this point. I mostly wanted to use it for its smaller ram requirements. This scene is at 1.79gb when rendering with adaptive subdivision and its just the bare start of the scene! Rendering with adaptive qmc nearly halves the needed memory.
Ill email ftp link to you morbid angel. Beware though its 25mb and has some large textures.
Yeah the AA affects textures as well. Regarding your wall, in fact the adapt QMC version shows more detail, that’s why it’s noisy. The adapt sub blurs it out a bit. It’s like when switching from catmull/rom filter to mitchell/netra for example. The catmull will make everything look sharper.
Maybe these AA filters can help you smoothing out the noise on the wall? Which one are you using now?
Mmmm this makes me think you have a texture on the sofa too? Or a bump texture? Probably with only color and glossy you don’t have the problem, can you try that?
yeah I can try later today. There is a texture on the couch. My issue with the wall is of animation. I would need to do a animation test to see how the noise looks across several frames.
wow is it that different? hmmm ive tried both latest version at home and version .14 at work and while im not sure if they came out exactly the same, the issue didn’t change that I could see.
It’s a chamfer box with a material that has a fine leather bump on it.
The reflection glossy is set to 120
QMC AA
ADAPTIVE SUB AA
QMC AA, no bump texture
I used catmull rom to better see the effect.
Weird thing is that I don’t get a smooth result with adapt sub either. It shouldn’t be too smooth though because there is a bump so it should look bumpy
egads 120 subdivisions? Man i remember when anything above 8 just crawled… okay so maybe the adaptive subdivision is blurring too much? I was using catmull rom as well, it just looks so much better compared to the others. Could just be in my head though. Maybe the noisier result is showing better detail.
That’s what I was trying to say Especially for your wall I’m sure it’s just showing more detail instead of blurring it like the adapt subdivision does. Don’t think it will give you problems in the animation?
percy…why your scene renders for so long?..
i cant get the correct result (like your render) but even then there is nothing there and the rendering is huge…
looks like the issue was that my concrete material was ALOT more bumpy then I thought it was, so from far away it just looked like noise, but close up you could see the detail. A conrete surface that bumpy wouldn’t be that shiny so it looked strange. Thanks for the help guys.
Sorry to come in at the end of this - but I think the issue here is the AA filter - not the Sampler.
These fiters modify the pixel edges in the end - no matter how it is rendered.
Catmull-Rom is way to sharp for on-screen viewing. I think it is unrealistic even for print. If you have any sample grain left from low samples - this AA filter will only mangify the problem - as illustrated above by flipside.
Doesn’t really have much tech info - but shows some differences. I think maybe I am thinking of “Digital Lighting and Rendering” or “CG Techniques”? It has been a while since I cracked a book…
