Cycles Requests

[lsscpp]

May I point your attention to this thread (How useful could be a Material Input node?) to discuss the idea?

[MetinSeven]

To improve Cycles realism I’d also love to see proper micro-roughness added.

Have a look at this interesting Blender Artists thread for more info:

Micro/angle dependent Roughness & Iridescence

[JuanGea]

Are you sure Cycles does not have that already?

[MetinSeven]

As far as I know Cycles doesn’t have this yet, but I’d be happy if I’m incorrect.

[xan2622]

@TakahiroKomatsu

Pausing and Resuming rendering would be fantastic to have.

You might be interested in trying this addon:

Blender Suspender add-on maintenance donation

[ankitm]

I guess this discussion about licensing must have come up before on https://opensource.stackexchange.com.
Please keep the thread on-topic. Create a new one to discuss this, and link that here.

[LazyDodo]

@Alaska

Here’s a screenshot of our full conversation:

couple of points there

1. That was my personal opinion, this is in no way / shape / form the stance of the blender project as a whole
2. Always lovely when people post a private conversation without asking, while you are naturally free to do so, it is very likely I will be much less engaging in future conversations with you.

[MetinSeven]

I’ve split the GPL license discussion to a separate thread.

Feel free to continue the discussion there, as long as you keep it respectful. Thanks.

[YAFU]

Well, in forums more and more users are wondering how it would be possible to speed up OptiX denoiser’s work in transparent areas.
Adaptive Sampling solved the problem for render in transparent areas. Could it be possible that somehow OptiX denoiser could do something similar to what Adaptive Sampling does in transparent tiles to speed up the work?

[Jason_C]

Is performance overhead of the OptiX denoiser a significant issue? It has not seemed to be for me. Is it slower on cards that do not have tensor cores?

Also, I believe the OptiX denoiser is essentially a black box in the graphics driver the Cycles hands image sections to and gets back denoised versions, so not sure there’s much the Blender/Cycles devs could do. (except maybe identify empty tiles and skip denoising them entirely?)

[verysame]

So, as for my Cycles Clip Geo node suggestion it seems even Octane is adding it in the next release 2021:

OTOY • OctaneRender 2021™ Preview is here!

I still think this is a neat feature and it will be hopefully added at some point

[kram1032]

Raytracing-based Bools would be cool indeed.
In the meantime I was partially successful accomplishing something like this with a shader. Plenty of breaking instances so it’s far from perfect, but for the simplest cases it might work for you:

Fake Bool operation with OSL shader

[lsscpp]

Probably I’m too lazy to figure out for myself: what are the conveniences over the regular boolean modifier? Or I should say, a node-modifiers enpowered boolean operation?

[MetinSeven]

The advantages of Booleans at rendertime that I can think of are:

1. Your scene is not bogged down by Boolean modifier operations being (re)calculated.

2. Very complex high-polygon Booleans might be enabled by this.

[BD3D]

That’s an interresting idea - I just tried it, but I don’t see any straightforward way to correctly bend geometry without a node setup that is too complex to be user friendly. Maybe there could be a dedicated Node for this kind of deformation. Also - if you want deformation for the individual branches, that would become horribly complex probably.

Edit: Just noticed you meant modifiers and not nodes - but I think the same usability problems occur there.

Nice work, the only problem is that cycles don’t allow variable displacement per instance, so this kind of animation wouldn’t work on forests from particles for example, where a procedural noise with texture coordinate + from instance option influencing the deformation intensity could give some truly amazing wind effects variations.

Sad that it’s not possible to do that, in the example below i clearly vary my x/y direction but the same direction applies to all instances

Please correct me if i’m wrong?

[lsscpp]

for 1. I hope that some “cache node” will eventually land in modifiers, as many are asking here and there.
for 2. also I hope that modifier nodes will get the job done, considering also the recently implemented “exact” booleans algorithm

[MetinSeven]

I’d love to see micro-roughness added to Cycles:

[AndreasResch]

The VShade material addon has Micro-Roughness implemented in its nodes.

https://www.cgtrader.com/3d-models/scripts-plugins/rendering/vshade-professional-shader-system-for-blender

[PaoloFurani]

But you already posted that, here?

Micro/angle dependent Roughness & Iridescence