SDF Texture Generator

Signed Distance Field (SDF) texture generator for Unity using the Jump Flooding Algorithm (JFA) implemented in a ComputeShader.

Updated with Unity 6000.3.0f1.

There are two main procedures in this repo:

• MaskToSdfTextureProcedure (pixels).
• Mask3DToSdfTexture3DProcedure (voxels).

Implementation notes

• Using a single texture to store both inside and outside seeds, reducing the number of dispatch calls and texture R/W.
• Using GPU group shared memory to reduce reads per thread.
• Optional sub pixel interpolation for smoother edges, especially at low resolutions.
• Optional downsampling.
• Optional double buffering to remove jitter (GPU race conditions).
• Optional SDF and internal flood texture precision settings.

References

• Shadertoy implementation and Explanation of JFA by Demofox