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A.: Shallow bounding volume hierarchies for fast SIMD ray tracing of incoherent rays
| Content Provider | CiteSeerX |
|---|---|
| Author | Dammertz, H. Hanika, J. Keller, A. |
| Description | Photorealistic image synthesis is a computationally demanding task that relies on ray tracing for the evaluation of integrals. Rendering time is dominated by tracing long paths that are very incoherent by construction. We therefore investigate the use of SIMD instructions to accelerate incoherent rays. SIMD is used in the hierarchy construction, the tree traversal and the leaf intersection. This is achieved by increasing the arity of ac-celeration structures, which also reduces memory requirements. We show that the resulting hierarchies can be built quickly and are smaller than acceleration structures known so far while at the same time outperforming them for incoherent rays. Our new acceleration structure speeds up ray tracing by a factor of 1.6 to 2.0 compared to a highly optimized bounding inter-val hierarchy implementation, and 1.3 to 1.6 compared to an |
| File Format | |
| Language | English |
| Publisher Institution | In Computer Graphics Forum (Proc. 19th Eurographics Symposium on Rendering) (2008 |
| Access Restriction | Open |
| Subject Keyword | Ray Tracing Acceleration Structure Long Path Simd Instruction Tree Traversal Shallow Bounding Volume Hierarchy Leaf Intersection Photorealistic Image Synthesis Hierarchy Construction Fast Simd Ray Tracing Incoherent Ray Ac-celeration Structure New Acceleration Structure Memory Requirement Inter-val Hierarchy Implementation |
| Content Type | Text |
| Resource Type | Article |
