Hello All, I am working on performance optimization. Currently i am rendering 1000s of objects into my scene using buffer geometry. I found that buffer geometry is faster but due to lot of objects my browser slow down. So i found a solution to use instance buffer geometry or instance mesh To ov…

Please use InstancedMesh. It will make it easier to transform individual instances like demonstrated in the official demos, e.g. three.js webgl - instancing - dynamic .

[image] Alex: I found that buffer geometry is faster but due to lot of objects my browser slow down. So i found a solution to use instance buffer geometry or instance mesh To overcome the large number of object rendering and slowness in the browser. I just read simple discussion here. But …

[image] Alex: Means how rendering 1000s of buffer obj is slower than rendering 1000s of instances. Rendering 1000 meshes produces 1000 drawcalls. Rendering 1000 instances of a single instanced mesh produces 1 draw call. There are many topics in this forum which explain why draw calls are a …

For transforming instancedBufferGeometry (like trees or sprites) need custom shader. [image]

Is it possible to have different shaders per instance with instancedBufferGeometry or InstancedMesh and still have only one draw call?

Its posible to use several materials like phong, standard, lambert in one shader and one draw calls, but bad solution, because will be very big code and warst fps Its posible to set different colors, textures to different objects in instancedBufferGeometry and InstancedMesh For me instancedBufferG…

I will have to try out instancedBufferGeometry. Could one write a custom shader that makes Instances meshes appear completely different? From what I understand one can modify the vertices with a custom shader too. That way one could only have instanced meshes in the scene. But change the shape wit…

InstancedMesh vs. InstancedBufferGeometry

Questions

caBattista July 10, 2022, 7:14pm 10

I’ve researched a little more and found out it can’t be done because for that (for example adding a vertex within a shader) you would need a geometry shader which WebGL does not support.

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InstancedMesh vs. InstancedBufferGeometry

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