Proxy Object with Vertex Map - file size

[wolfgang_himmelfarb]

Hello Chaos help team, I recently worked through something I've been wanting for a while; adding variation to tree leaves using falloff in the vertex map. Its work as expected and I really like the results, however even though the proxy is generated the file size remains as it would if it was the original polygon object. Is this something that could be worked out or did I find an exception to the proxy setup that won't ultimately work. Any feedback would be appreciated.

[deyan.hadzhiev]

Hi wolfgang_himmelfarb, can you share exactly which version of V-Ray and Cinema 4D are you using. There was a problem with Proxy objects leaking memory into the scene (mentioned here), but it was fixed with the latest V-Ray version (6.20.02), so please try using it for scenes with V-Ray Proxy.

Additionally, after performing similar local test - it seems the vertex map tags you have left on the object, may still reserve substantial memory. I suppose each tag stores a color value per vertex from the original mesh. Deleting the tags should reduce the scene size.

If you have left the tags so you may use them in the material (by using a Vertex Map shader), it would be best to remove them - they are ignored for Proxy objects anyways. The data you need is already part of the vrmesh as a dedicated map channel, and you can sample this channel by using VRayUserColor or VRayUserScalar shader, by typing the channel name as the "User Attribute". The name should be the same as the name of the Vertex Tag.

[wolfgang_himmelfarb]

Hi wolfgang_himmelfarb, can you share exactly which version of V-Ray and Cinema 4D are you using. There was a problem with Proxy objects leaking memory into the scene (mentioned here), but it was fixed with the latest V-Ray version (6.20.02), so please try using it for scenes with V-Ray Proxy.

Additionally, after performing similar local test - it seems the vertex map tags you have left on the object, may still reserve substantial memory. I suppose each tag stores a color value per vertex from the original mesh. Deleting the tags should reduce the scene size.

If you have left the tags so you may use them in the material (by using a Vertex Map shader), it would be best to remove them - they are ignored for Proxy objects anyways. The data you need is already part of the vrmesh as a dedicated map channel, and you can sample this channel by using VRayUserColor or VRayUserScalar shader, by typing the channel name as the "User Attribute". The name should be the same as the name of the Vertex Tag.

Apologies Deyan, I never got back to you on this. I finally had the time to work through the workflow you've suttested and replaced the vertex map with VRayUserColor and it worked as expected - proxy object contributed 7mb rather than 75 mb, which helps greatly. I'm assuming it's still bigger than just without vertex data but I'll take any savings. Thank you for this. I may circle back to add some documentation just for reference since im sure I will return to vertex map proxy objects.