Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Shadow algorithms for computer graphics
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Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Soft planar shadows using plateaus
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IEEE Computer Graphics and Applications
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Proceedings of the Eurographics Workshop on Rendering Techniques 2000
Casting curved shadows on curved surfaces
SIGGRAPH '78 Proceedings of the 5th annual conference on Computer graphics and interactive techniques
A geometry-based soft shadow volume algorithm using graphics hardware
ACM SIGGRAPH 2003 Papers
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Proceedings of the ACM SIGGRAPH/EUROGRAPHICS conference on Graphics hardware
Soft shadow volumes for ray tracing
ACM SIGGRAPH 2005 Papers
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APGV '05 Proceedings of the 2nd symposium on Applied perception in graphics and visualization
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Realistic soft shadows by penumbra-wedges blending
GH '06 Proceedings of the 21st ACM SIGGRAPH/EUROGRAPHICS symposium on Graphics hardware
Minimizing CPU usage in soft shadow volumes algorithm
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Soft irregular shadow mapping: fast, high-quality, and robust soft shadows
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Granular visibility queries on the GPU
Proceedings of the 2009 symposium on Interactive 3D graphics and games
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Proceedings of the Conference on High Performance Graphics 2009
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ACM Transactions on Graphics (TOG)
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EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
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EGSR'06 Proceedings of the 17th Eurographics conference on Rendering Techniques
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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 more complex models 50 fps is normal. In addition to optimizations, two simple techniques for improving the visual quality are also presented.