Performance: sharedbuffergeometry update ranges #249
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The brush geometries seem to be 1 MB, re-uploaded on every tick. That's pretty taxing for 90FPS.
This sets the
updateRangefor brush geometries, so in most cases only a little bit of the geometry is uploaded by THREE.js (exactly as much as we have drawn).Without this I was unable to hit 90FPS when drawing, even with straight OpenGL. But with, it it seems very smooth.