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Modifications to GPU Hardware to Benefit Signed Distance Fields
GPU hardware for Signed Distance Fields. Contribute to bryanmcnett/sdf_hardware development by creating an account on GitHub.
The Signed Distance Field (SDF) is a fundamental primitive used in computer graphics, which has the nice property that it encodes a surface in 3D space, which regardless of topological complexity can be filtered efficiently for automatic level-of-detail by massively parallel hardware, much as a texture map can. An 8x8x8 block that holds a flat piece of surface will likely need to encode information for only 25% of the texels, and the rest can be predicted trivially. The Nintendo 64 game console did not tap the 4 nearest samples in a 2D grid to bilinearly filter a 2D texture, as contemporary hardware does.
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