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- Akenine-Möller, Tomas, 1970
(författare)
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An Extremely Inexpensive Multisampling Scheme
- 2003
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- We present a new sampling scheme for low-cost multisampling rasterization. The scheme builds upon sample sharing and the N-rooks sample scheme, and it achieves at most two shades in between fully outside and fully inside. Also, the slightly irregular pattern helps disguising aliasing effects. A simple visual evaluation shows that our new scheme gives similar quality to that of the Quincunx scheme. More importantly, our scheme uses only 1.25 samples on average per pixel, while Quincunx and FLIPQUAD uses 2 samples. As a consequence, our new scheme uses 62:5 percent of the memory and memory bandwidth as compared to Quincunx and FLIPQUAD.
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| 2. |
- Assarsson, Ulf, 1972, et al.
(författare)
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An Optimized Soft Shadow Volume Algorithm with Real-Time Performance
- 2003
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Ingår i: Proceedings of the SIGGRAPH/ Eurographics Workshop on Graphics Hardware, San Diego, 26-27 July 2003. - 9781581137392 ; , s. 33-40
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Konferensbidrag (refereegranskat)abstract
- In this paper, we present several optimizations to our previously presented soft shadow volume algorithm. Our optimizations include tighter wedges, heavily optimized pixel shader code for both rectangular and spherical light sources, a frame buffer blending technique to overcome the limitation of 8-bit frame buffers, and a simple culling algorithm. These together give real-time performance, and for simple models we get frame rates of over 150 fps. For morecomplex models 50 fps is normal. In addition to optimizations, two simple techniques for improving the visual quality are also presented.
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