Multiple material types bug

Morrog · Post by **Morrog** » Tue Dec 28, 2004 3:50 am

If a scene node has multiple material types, and at least one of those is transparent, then things don't get rendered correctly.

The SceneManager divides transparent nodes from non-transparent ones so the transparent nodes are drawn last. Note that this is done on the node level. Therefore it does not support having transparent materials and non-transparent materials together in one Mesh/Node.

The solution is a bit complicated because of the way Irrlicht is designed. The SceneManager isn't supposed to know about the MeshBuffers of a node, because a node may not contain a meshbuffer. The best solution I can think of right now is to have a way for scenenodes to register a MeshBuffer with the scenemanager as "transparent" in the function that is called before rendering. The scene nodes can then pick out the transparent meshbuffers themselves and tell the scenemanager about them.

puh · Post by **puh** » Wed Dec 29, 2004 9:13 am

Hey, did you read some posts below prior to post here a new message?

http://irrlicht.sourceforge.net/phpBB2/ ... php?t=4804

Murphy · Post by **Murphy** » Thu Dec 30, 2004 10:18 am

I'm going to assume Morrog read that thread.

niko · Post by **niko** » Mon Jan 03, 2005 2:21 pm

Yep, a simple solution would be that scene nodes register themselfes twice for a transparent and a solid pass. I'll put that on my list.