Forums » CentiLeo for Cinema 4D
Pages: 1
Rendering speed needs to be improved
 
The current test rendering time has exceeded expectations, I hope to speed up the rendering time, a great renderer
 
Administrator  Posts: 643
Oct 27, 2021 11:34
Hi, there are 10s of factors that influence on rendering speed for this or that scene. There are scenes where CentiLeo is faster than other renderers, and there are also scenes where it can be slower. At the moment we are working on render time optimizations to make it a lot faster in more cases.

Please show your example screenshot of a scene where the render speed should be improved.
 
Actually, I found that lowering the max iterations decreases my render time by as much as the Decrease itself.
from 32 to 8 iterations I render from 20 minutes per frame to 5 minutes.
How come the max iterations is so high by default?
I cannot tell any difference between the 8 vs 32 iteration renders I tested.
 
Administrator  Posts: 643
Dec 16, 2021 17:43
ssjenforcer, it works progressively. The user first opens the IPR and see how the noise goes, then adjust the max iteration count to the number that gives better speed for desired noise based on few experiments on a given scene with a given lighting.
Default 32 iterations is an example, of course very often a smaller number of iterations is enough.
When I will recover the feature of adaptive rendering based on per pixel noise then these 32 iterations will finish very quickly if for example 8 iterations are already enough. It will look much faster for the scenes where the most part of image has much less noise that the other part.
 
Quote
Kirgman wrote:
ssjenforcer , it works progressively. The user first opens the IPR and see how the noise goes, then adjust the max iteration count to the number that gives better speed for desired noise based on few experiments on a given scene with a given lighting.
Default 32 iterations is an example, of course very often a smaller number of iterations is enough.
When I will recover the feature of adaptive rendering based on per pixel noise then these 32 iterations will finish very quickly if for example 8 iterations are already enough. It will look much faster for the scenes where the most part of image has much less noise that the other part.
is there a way to reduce the max iteration in the IPR to try to help speed up animation previews? I didn't see many options for the ipr settings.
 
Administrator  Posts: 643
Dec 16, 2021 20:11
Quote
ssjenforcer wrote:
is there a way to reduce the max iteration in the IPR to try to help speed up animation previews?
In the main renderer settings of CentiLeo, single user control
 
Quote
Kirgman wrote:
Quote
ssjenforcer wrote:
is there a way to reduce the max iteration in the IPR to try to help speed up animation previews?
In the main renderer settings of CentiLeo, single user control

Oh I see, changing the max iterations for the render also affects the IPR iterations. Thank you.
Edited: ssjenforcer - Dec 17, 2021 00:22
 
Administrator  Posts: 643
Dec 17, 2021 03:37
Simply when you increase the max iterations the IPR will continue computation. But when the IPR has reached some number of iterations and you eventually decrease it from render settings the render will not restart because it has reached more iterations than in render settings.
Pages: 1
Users browsing this topic