ARTSccelerated ray-tracing system
IEEE Computer Graphics and Applications
Fast image generation of construcitve solid geometry using a cellular array processor
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
An improved illumination model for shaded display
Communications of the ACM
Exploiting Coherence for Multiprocessor Ray Tracing
IEEE Computer Graphics and Applications
Links-1 - a parallel pipelined multimicrocomputer system for image creation
ISCA '83 Proceedings of the 10th annual international symposium on Computer architecture
An adaptive subdivision algorithm and parallel architecture for realistic image synthesis
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
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This paper describes a parallel ray tracing system MAGG which has 86 transputers and HDTV frame buffers. Our system is based on a screen subdivision algorithm. In this algorithm, each processor essentially requires entire scene database. Therefore huge local storage should be required if the scene is complicated. In order to avoid this, shape descriptions in a scene database should be transferred to the processor when they are required. However, it would lead to lower parallel processing performance. We have devised fast communication between the large shared memory and the local memory on each processor by means of DMA transfer instead of serial link transfer. Some experimental results indicate it is effective to improve the efficiency of parallel processing.