We plan to do an update round for acceleration structures. As this part of the renderer is fairly old, it is now a good time to review the code and see what we can improve. Here is a list of things to do:
[x] Flag for whether the primitive is planar or not.
Add an interface for avoiding self-intersection for planar primitives using the previously intersected primitive's pointer.
[x] See this scene can render without self-intersection or not (currently we need to adjust epsilon).
[x] Add the self-intersection avoidance method from ray tracing gems.
[x] Add option for using epsilon or ray tracing gems method for avoiding self-intersection.
[x] Add N-ary BVH (and incorporate the old BVH implementation into the same interface).
[x] Expose new acceleration structures to TLAS SDL interface & Blender.
User interface:
[ ] SDL interface for common/additional parameters of acceleration structures
[ ] Blender interface for the above parameters
Some optimizations that should be attempted:
[x] BVH4 with basic SIMD support
[ ] Implement mailboxing for kd-tree (with compile time switch)
Additional issues found during the process, should also be fixed:
[ ] TBasicTriangle::getAABB() should not include epsilon already. This should be done by the primitive or acceleration structure.
TzuChieh
commented
9 months ago
We plan to do an update round for acceleration structures. As this part of the renderer is fairly old, it is now a good time to review the code and see what we can improve. Here is a list of things to do:
Add an interface for avoiding self-intersection for planar primitives using the previously intersected primitive's pointer.User interface:
Some optimizations that should be attempted:
Additional issues found during the process, should also be fixed:
TBasicTriangle::getAABB()should not include epsilon already. This should be done by the primitive or acceleration structure.