Now, this is the same scene as in the finished works forum, I am using it to learn yafray. So, it is rendered in yafray, using hdri with 256 samples and aa_minsamples set to 6, aa passes also set to 6, took a few hours to render, and it’s still so grainy. Any ideas, how to make it more clean?
Also:
Is there a way to export uv-maps?
How do I create a bump map?
Isn’t there a way to produce more contrast with hdri? I mean the shadows seem so pale.
For the lamps: Right now they are not lit, because i don’t know how to ake them light the scene. I tried placing pointlights inside the glass, but their light stayed inside. How can I make it shine trough those bulbs and thus light the scene?
Thanx.
I don’t know if I should post this in the q&a forum, as it became a wip, it will have a final render if I can get it right, so I guess I’ll post it here.
I wasn’t sold on your initial render of this scene, but this is a nice update. The lighting is natural. Its exactly as it would appear on an overcast day, with the lights turned off in the trophy room.
I wish I could help you with Yafray. If you read through this portion of Landis’ Airman thread you should be all set on your UV questions.
Did you have the hemilight or pathlight on when you exported? I know that sometimes having either of those on will increase my rendertimes and give me somewhat grainy results. I could be wrong, tho. I am VERY new to Yafray, but I love it!
Also, maybe you can help me…what are your settings for your eyes in the image above? I am getting ready to start working on the shader for the Airman’s eyes inside YAFRAY and I would like to bump your numbers against your results for a reference during the developement. I am aiming for the obvious…fairly reflective…glossy…a little wet from the last blink…maybe even a little teared up. Any ideas? Thanks.
Yep, but I need hemilight to do a HDRI render, so I can’t exclude that. I know that gives the grainy results, I tried with other light sources and got a clear image. But as far as I know, you can’t use HDRI without a hemilight.
Landis,
thanx, I’ll read them.
About the eyes. Actually I was pretty lucky here, because the eyes consist only of two spheres. A larger sphere and a smaller one. My settings probably won’t fit yours, because my eyes don’t have textures (you know, uv-mapping problem ), so the smaller sphere is like a highly reflective glass, so what you see on it is the reflection of the background. Actually it is the same material on the light bulbs.
And for the numbers:
lights: hemilight with the grace_probe, and those two, which can be seen on the image.
as you can see, I got past the uv problem and the bump mapping problem:) However I can’t get past the graininess problem. This is with 160 samples 8 aaminsamples, 3 aapasses, and it’s still grainy. I tried with 256 samples, 25 indirect samples, 10 aaminsamples, 3 aapasses, but I stopped the render after 24 hours of rendering, and it was still at the begining of the first AA pass.
For the noise in YAFray, all I do is set my Hemi Light samples to about 10, (=100 I think), and set AA samples to 4 and Min AA Samples to 4. I get a nice render with minimal amount of noise.
I know some people like the grainy look that YAFRAY can produce, but that second pic is WAAAAY too grainy! …for me, anyway. the idea is interesting. I’d like to see some of the other trophies in this room.
To get rid of the grain or tone it down you can use the antinoise filter. Something like settings of 5 and 1.1 (don’t remember what they are called at the moment. This may be too much though and you can try reducing the setting until you get something you want Like 3 and 1.1. I’m not sure if this will do the trick but it is something else to try.
Paradox
This is a little “make shift” but if you want to get rid of the grain and dramatically INCREASE your render times, try rendering larger than what you desire out of the finished product and then shrink it down. This works very well, but you really shouldnt have to do this if you know what I mean. Hey why am I bitching…its free…I love this stuff!! What ever works!
Well re antinoise filter, I just suggest trying it. I’ve found sometimes it is just what I want sometimes it just makes it worse. It’s just a matter of experimenting and finding the look you want.
Paradox
Anything is definatley worth a try, however, every time I have used the anti-noise I was not satisfied with the results. Another thing you could try is to increase the lighting in the scene. The grain seems to come with shadows and low lighting…so…try rendering it a little brighter to eliminate the grain, and then bring it into Photoshop or the gimp to make it just right (in this case darker). Even if it looks far too bright or “washed out” after tweaking the lighting inside of YAFRAY do not be alarmed…you would be surpirsed the variations in lighting that Photoshop and the gimp can recognise. Just an idea. Hope this helps.
I have tried the antinoise filter, but it’s a post process filter, and I couldn’t get anything right with it.
I’ll try rendering it in higher resolution, but I don’t know if rendering with much more samples or higher resolution would be faster
O well, we’ll see
Well rendering with a higher resolution will not be faster by any means, but, it will solve your problem and if you only plan on rendering a still rather than animation then you’ve got nothing to worry about.
), so the smaller sphere is like a highly reflective glass, so what you see on it is the reflection of the background. Actually it is the same material on the light bulbs.
What ever works!