OctaneRender® 1.024 beta 2.44 SHADING TEST (win64)

[abstrax]

Hi all,

I have made a small change to solve these shading issues:

shading issues.png (239.79 KiB) Viewed 3188 times

As changes in that area often cause headaches in other unexpected places, I would like you to test a special build that is based on beta 2.44 and adds only the change to solve the shading issues. This is what you get from the same scene with the test build:

shading issues fixed.png (171.24 KiB) Viewed 3188 times

If you don't find any problems caused by the fix, we will add it to the upcoming release 2.45 which (hopefully) fixes this issue and some more.

To keep things simple, I just made a CUDA 3.2 build for Windows x64. You can download it from here:
http://www.refractivesoftware.com/rcdow ... g_test.zip (33.6 MB)

It would be great, if some of you could test the changes with some of your scenes and check that it doesn't break other things. Keep an eye on specular and glossy objects and objects with alpha/opacity maps.

Thanks a lot for your help,
Marcus

[andrian]

No problems so far.. I checked it on several scene, render quality is the same, no visual changes.

[GeoPappas]

I tried it on a few renders, but everything looked the same. That is, it didn't seem to smooth any better than the previous version.

[abstrax]

Thanks for testing and giving some feedback.

The self shadowing at the terminator is not affected by it. You still have to manually set/increase the ray epsilon to reduce self shadowing artifacts, but now you don't get the shading problems behind the terminator, when you have a large ray epsilon, which you had before.

I'm currently thinking of several approaches to hide the self shadowing in most of the cases, but didn't get around to try them out yet.

Cheers,
Marcus

[Zay]

I see the difference just like in your images in my scenes. But I normaly don't run Octane where ray epsilon is set to default. I always has is set to zero anyway to fix other shading problems.

[Isotemod]

There seems to be an improvement in the smoothness of shadows as seen(if you view full size) on her top.

Is this expected?

[PeterCGS]

I've had a problem with backdrops being weird when rendering on the Cuda3.2 version on a 460 GTX card. When I turn off the smoothing, it renders as on my CUDA3.0 version. But when turn smoothing on I get very odd stuff happening on planes etc..

This is what happens for example on a grid (within the Red box, I have smoothing turned on, and the material goes bezerk).. This screenshot whas taken with the shading test version, that I hoped would fix the problem :/

[abstrax]

I've had a problem with backdrops being weird when rendering on the Cuda3.2 version on a 460 GTX card. When I turn off the smoothing, it renders as on my CUDA3.0 version. But when turn smoothing on I get very odd stuff happening on planes etc..

This is what happens for example on a grid (within the Red box, I have smoothing turned on, and the material goes bezerk).. This screenshot whas taken with the shading test version, that I hoped would fix the problem :/

I guess, this problem was not solved by the shading test version. Maybe you can send us the scene without the ball, to let us check where the actual problem is.

Cheers,
Marcus

[jiadiho]

Hello! abstrax.Can you tell me when the release 2.45 coming out? And when the official version released?

[abstrax]

Hello! abstrax.Can you tell me when the release 2.45 coming out? And when the official version released?

The plan is Monday or Tuesday, but this just a guess, because we still have a few bits and pieces to finish, which might take longer in the end. For the time being the latest official release is beta 2.44.

Cheers,
Marcus