Which, when, why and where? Other than rendering multiple viewports, which is better / best practice? To place objects and lights on different scenes or on different layers? Also which would give the best performance? scene1.add(cube) scene1.add(directionalLight) scene2.add(sphere) scene2.add(po…

But what do you do when you have more methods such as this? Say the bool changes along with 3 others, you’d traverse the same scene in the same frame. While, if you have to traverse it at least once to figure out the layer stuff, or whats visible and what not, you could pull from this state and do i…

[image] pailhead: But what do you do when you have more methods such as this? Can you give some concrete examples of the kind of methods you mean? [image] pailhead: Say the bool changes along with 3 others, you’d traverse the same scene in the same frame. You mean you’d have to traver…

I’m having a hard time remembering what i was trying to do. It’s possible that i was trying to render completely different meshes, at the same spot. I think i had a high-resolution mesh with no mapping for example, and then a portion of that mesh, with mapping. Imagine you delete a bunch of triangle…

[image] looeee: Can you give some concrete examples of the kind of methods you mean? I just meant function setColorWrite( val ) { root.traverse(...) } function setVisible(val) { root.traverse(...) } function setFOO( foo ) {...} function setBAR( bar ) {...} Will all have to do their own trav…

[image] looeee: You mean you’d have to traverse the scene three times to check for three different things? I’d say that’s just a sign you need to refactor your app. I agree with this, but i think the boundary of “your app” and three in this case is a bit ambiguous. I usually have a layer that…

Can EffectComposer with multiple RenderPasses be used to achieve layering?

[image] trusktr: to achieve layering I’m not sure what you understand by “layering”, the layer object is a bitmask to determine if a camera has the same flag as the object has in the layer mask and will render it then. As others mentioned already this concept isn’t really good as it requires…

How would layer lists (sets) work? While traversing the tree only once (in WebGLRenderer), at each node, the system would check which layer set the node is in, and render it to that render target (or whatever it renders to)? What I was thinking to do, on the outside of Three.js in user code, was to…

[image] trusktr: How would layer lists (sets) work? While traversing the tree only once (in WebGLRenderer), at each node, the system would check which layer set the node is in, and render it to that render target (or whatever it renders to)? When THREE is about to render the scene it generate…

[image] Fyrestar: list can be used in another pass in which those objects should be visible, without further scene traversal or culling, straight to the render calls. That sounds great! Hopefully someday it’ll exist. [image] Fyrestar: Anyway without adding such an internal callback layer…

Multiple Scenes vs Layers

Questions

trusktr October 8, 2020, 8:38pm 34

Alright, first version of a layer system. The demo has some UI to toggle layering on/off and to change layer order:

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Multiple Scenes vs Layers

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