InstancedMesh vs. InstancedBufferGeometry

Questions
#1

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 overcome the large number of object rendering and slowness in the browser.

Here a little confuse which one i should go for in between instance mesh and instance buffer geometry.

Because in future i have to do some transformation means move the individual obj so i think this is not possible with instance buffer geometry.

Please any views on each of my statement above.

Thanks

#2

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.

1 Like
#3

I just read simple discussion here.

But i am not able to found how ?

Means how rendering 1000s of buffer obj is slower than rendering 1000s of instances.

#4

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 critical performance metric.