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Sprite occlusion for performance


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Hello everyone, 

Is is possible to implement some occlusion or LOD-like mechanism for sprites in Babylon?  I have a scene with a very large terrain and some forest areas represented by thousands of tree sprites. There are so many sprites that they actually affect performance. 

Could someone point me in the right direction? Is there a way to adapt LOD for sprites? Or could I put the camera into some kind of transparent mesh and in some way occlude the sprites behind the mesh walls?

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Thank you for your response!

I tried to do that, but unfortunately the performance is waaay worse with meshes, even using instances and LOD with small distance to the camera:


With 10000 sprites it renders with 60 FPS on my computer, but using 10000 planes with instances and LOD results in 20 FPS :(

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