Chaos Corona for 3ds Max > [Max] Resolved Feature Requests

Faster CProxy in ForestPack with GetRenderMesh

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Forest pack + Corona proxy are painfully slow to open a saved scene. In Vray it is jusy blazing fast.
From Itoo forum:

"unfortunately at the moment, there is a known limitation whereby Forest Pack needs to load the whole mesh from a proxy in Corona.

This is done using a specific Max function (GetRenderMesh), which is very slow with Corona proxies. Although the mesh is not needed for the render itself (because proxies are rendered directly by the engine), it's necessary for other processes (i.e. to build the Forest point-cloud). For example, with V-Ray proxies 'GetRenderMesh' is very fast, because it returns the simplified mesh used for viewport. Instead, Corona computes and returns the full mesh stored in the proxy, and this process takes a lot of time."

Can you fix it?


I got a reply from Itoo

"Is there a possibility to run GetRenderMesh only when poiny cloud representation is selected in the FP display panel? It may give us possibility to use only proxy representation..."
"I'm afraid it's not possible. GetRenderMesh is required not only for Point-cloud, but also for other processes.
Some time ago we tried a similar workaround, but we had to revert it in a patch, because several side effects."

Can you fix this issue? Vray proxies with Forest pack open 20-30 times faster.


Hi there,
Could you please let us know what Corona Renderer version you're using?
Also, please let us know a bit more about your PC specs. (CPU model, installed RAM, Graphics card installed and its driver's version, OS version)

For now I can only confirm this is known and reported. We will see what exactly we can do about it. Right now I would consider it a known limitation.

(Internal ID=228813297)


Aorus elite v1 b550
ryzen 5950x
Kingston Fury RGB, DDR4, 64 GB, 3200MHz, CL16
NVME Crucial P2 1 TB M.2 2280 PCI-E x4 Gen3
gtx 970 - driver 471.96
Windows 10 Pro 21H1 19043.1237

@ maru:
Thank you for clarification. I will just wait.
I am a corona user since alpha and i know that sooner or later you make everything amazing.



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