Real-Time Stochastic Rasterization on Conventional GPU Architectures
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"Real-Time Stochastic Rasterization on Conventional GPU Architectures" Morgan McGuire (NVIDIA), Eric Enderton (NVIDIA), Peter Shirley (NVIDIA), David Luebke (NVIDIA), in High Performance Graphics 2010, June 2010 |
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| Research Area: | 3D Graphics | |||
| Author(s): | Morgan McGuire (NVIDIA), Eric Enderton (NVIDIA), Peter Shirley (NVIDIA), David Luebke (NVIDIA) | |||
| Date: | June 2010 | |||
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| Abstract: | This paper presents a hybrid algorithm for rendering approximate motion and defocus blur with precise stochastic visibility evaluation. It demonstrates---for the first time, with a full stochastic technique---real-time performance on conventional GPU architectures for complex scenes at 1920x1080 HD resolution. The algorithm operates on dynamic triangle meshes for which per-vertex velocity or corresponding vertices from the previous frame are available. It leverages multisample antialiasing (MSAA) and a tight space-time-aperture convex hull to efficiently evaluate visibility independently of shading. For triangles that cross z=0, it fall backs to a 2D bounding box that we hypothesize but do not prove is conservative. The algorithm further reduces sample variance within primitives by integrating textures according to ray differentials in time and aperture. | |||
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