buildTraceScene / SceneTrees / CpuSceneBvh inputs, with the Babylon objects behind them.
buildTraceScene
SceneTrees
CpuSceneBvh
Readonly
instanceIndex is the instance's position here and in sources.
instanceIndex
One per geometry. Positions are the vertex buffer's own array when it is tightly packed floats (not copied).
buildTraceScene/SceneTrees/CpuSceneBvhinputs, with the Babylon objects behind them.