c7ffe7f621
Previously, the shading and material was set once per PBVHNode when drawing. This is still the case, but PBVHNodes are now built to contain only one material and shading mode. This is done with an extra partitioning step; once the number of primitives in the node falls below the PBVH leaf limit, it's primitives are checked for matching materials. If more than one material or shading mode is present in the node, it is split and partitioned (partitioned by material rather than 3D location.) Given a sufficiently 'annoying' input, like a dense mesh with thousands of materials randomly scattered across it, this could greatly increase PBVH build time (since nodes might end up containing a single primitive), but in general this shouldn't come up. In order to support materials for grids, the CCGDM is building another grid array (of DMFaceMat structs). This could be used to replace CCGDM.faceFlag for some small memory savings (TODO). |
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