Discussion forum on the open source ray tracing kernels for fast photo-realistic rendering on Intel® CPU(s)
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I am following tutorial02 to write my own simple renderer on top of embree. I have two questions regarding motion blur: 1. How do you specify motion for user-defined primitives? 2. How do you enable motion blur for two-level BVH? It appears that bvh4mb accelerator for VirtualObject does not work. Thanks.
1) As you control the intersection code of the user defined primitive, you have to implement motion blur by yourself using the time specified in the ray. 2) We never tested motion blur for two level scenes, however, it should work if you use a normal BVH over your moving objects (that use the bvh4mb). You only have to be carefull that the bounding boxes you use in your toplevel BVH are conservatively bounding the motion of each object.
