Corona Renderer Forum

Corona Renderer for 3ds Max => [Max] General Discussion => Topic started by: Dalton Watts on 2020-07-03, 01:14:07

Title: Slow Corona Material Library
Post by: Dalton Watts on 2020-07-03, 01:14:07
Hello,

What is the technical reason why the corona material library is generally slow and somewhat laggy especially when scrolling but also when dragging a material to the 3ds max slate material editor? It has been that way since it was introduced.
Title: Re: Slow Corona Material Library
Post by: maru on 2020-07-03, 15:58:06
First of all, we are aware that the performance could be better. We are planning to improve it in the future, but currently there is no timeframe for this.

There are multiple technical reasons, but the most important one is that the framework we are currently using is not optimized for this kind of task. So it is a technical limitation of the technology we are currently using to draw the material library.

One possible improvement would be switching from displaying the material library on the GPU instead of CPU, and we could do the same with other parts of the Corona's UI. 
Title: Re: Slow Corona Material Library
Post by: davemahi on 2020-07-03, 16:04:33
good to know you are thinning about it. Sometimes I refrain from using it because of this. In the heat of production you dont need endless pauses. We have enough of that in Max as is.
Title: Re: Slow Corona Material Library
Post by: Dalton Watts on 2020-07-03, 16:44:02
Thank you MarcĂ­n! At first, trying out the daily build from 3JUN the material editor seemed faster but it was only placebo :-)

Would the GPU switch be a relatively "simple and fast" approach to develop? Anything you guys already tested?

Thanks for the clarification!
Title: Re: Slow Corona Material Library
Post by: maru on 2020-07-06, 17:39:21
Would the GPU switch be a relatively "simple and fast" approach to develop? Anything you guys already tested?
Thanks for the clarification!

Sorry, but I don't think it would be relatively simple and fast, and it hasn't been tested yet. It would be a part of a larger effort to improve the overall Corona UI (VFB, CIE, Material Library, etc).
Title: Re: Slow Corona Material Library
Post by: dviz on 2020-07-06, 18:25:21
Having the same issue at the office.
Does this improve with more cores on the CPU, or is this a single threaded task?
Title: Re: Slow Corona Material Library
Post by: Dalton Watts on 2020-07-06, 20:38:46
Having the same issue at the office.
Does this improve with more cores on the CPU, or is this a single threaded task?

99,999999% sure it is single-threaded.
Title: Re: Slow Corona Material Library
Post by: sprayer on 2020-07-06, 21:01:35
Slate material editor is slow by itself and autodesk also know that =)

https://forums.autodesk.com/t5/3ds-max-forum/slow-slate-material-editor-on-4k/td-p/9126160
https://forums.autodesk.com/t5/3ds-max-forum/slate-material-editor-slow-loading-of-materials/td-p/8677132