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Coverage Sampling Anti-Aliasing (CSAA) using NVIDIA’s GL_NV_framebuffer_multisample_coverage extention

Coverage Sampling Anti-Aliasing (CSAA) produces antialiased images that rival the quality of 8x or 16x MSAA, while introducing only a minimal performance hit over standard (typically 4x) MSAA. It works by introducing the concept of a new sample type: a sample that represents coverage. This differs from previous AA techniques where coverage was always inherently tied to another sample type. CSAA reduces bandwidth and storage costs. Implementing CSAA on the new GeForce 8 series is done through a new NVIDIA OpenGL API extension: GL_NV_framebuffer_multisample_coverage.

Jan 04, 2007 | Read article... | Permalink

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