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by mattdesl
452 days ago
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What are the practical implications of this kind of assembly language? Surely there’s more efficient means of describing 2D SDFs? Fun exercise! I’ve been enjoying trying to find some new ways to approach the challenge. I managed to build a single string expression for the entire program, so it could be evaluated per-pixel in a shader, but it turns out the expression is too complex for WebGL & WebGPU and the shader fails to compile. My next thought would be to evaluate the program at a low resolution to create a low res SDF texture for the shader to draw at a higher resolution. Some information will probably be lost, though. |
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By analogy, you wouldn't program in LLVM IR, but it's a useful intermediate representation for a bunch of higher-level languages. Higher-level tools can target this representation, and then they all get to use a standard set of optimizations and algorithms (fast evaluation, rendering, etc).
(I gave a recent talk that's a broad overview of this research: https://www.youtube.com/watch?v=UxGxsGnbyJ4)
> My next thought would be to evaluate the program at a low resolution to create a low res SDF texture for the shader to draw at a higher resolution.
Glad you're enjoying the challenge! You may also be interested in
https://www.redblobgames.com/x/2403-distance-field-fonts/