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  1. Proceedings of the 7th Conference on High-Performance Graphics (HPG '15)
  2. Decoupled coverage anti-aliasing
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Efficient ray tracing of subdivision surfaces using tessellation caching
Decoupled coverage anti-aliasing
Perception of highlight disparity at a distance in consumer head-mounted displays
Compiling high performance recursive filters
Bounding volume hierarchy optimization through agglomerative treelet restructuring
Deferred attribute interpolation for memory-efficient deferred shading
An adaptive acceleration structure for screen-space ray tracing
Grid-free out-of-core voxelization to sparse voxel octrees on GPU
Reorder buffer: an energy-efficient multithreading architecture for hardware MIMD ray traversal
An incremental rendering VM
Adaptively layered statistical volumetric obscurance
Morton integrals for high speed geometry simplification

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Decoupled coverage anti-aliasing

Content Provider ACM Digital Library
Author Wang, Yuxiang Sen, Pradeep He, Yong Wyman, Chris
Abstract State-of-the-art methods for geometric anti-aliasing in real-time rendering are based on Multi-Sample Anti-Aliasing (MSAA), which samples visibility more than shading to reduce the number of expensive shading calculations. However, for high-quality results the number of visibility samples needs to be large (e.g., 64 samples/pixel), which requires significant memory because visibility samples are usually 24-bit depth values. In this paper, we present Decoupled Coverage Anti-Aliasing (DCAA), which improves upon MSAA by further decoupling coverage from visibility for high-quality geometric anti-aliasing. Our work is based on the previously-explored idea that all fragments at a pixel can be consolidated into a small set of visible surfaces. Although in the past this was only used to reduce the memory footprint of the G-Buffer for deferred shading with MSAA, we leverage this idea to represent each consolidated surface with a 64-bit binary mask for coverage and a single decoupled depth value, thus significantly reducing the overhead for high-quality anti-aliasing. To do this, we introduce new surface merging heuristics and resolve mechanisms to manage the decoupled depth and coverage samples. Our prototype implementation runs in real-time on current graphics hardware, and results in a significant reduction in geometric aliasing with less memory overhead than 8×MSAA for several complex scenes.
Starting Page 33
Ending Page 42
Page Count 10
File Format PDF ZIP
ISBN 9781450337076
DOI 10.1145/2790060.2790068
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2015-08-07
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Real-time rendering Anti-aliasing Graphics hardware
Content Type Text
Resource Type Article
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