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Proof of concept RVSDG based compiler for a simple SignedDistanceField language.

tree-sitter-minisdf: The tree-sitter grammar and parser, if you get strange tree-sitter errors, change into that directory and call ´tree-sitter generate´

minisdf-ast: AST implementation for MiniSDF. Can either be parsed from a file (using tree-sitter), or generated by a program.

minisdf-optimizer: The RVSDG based optimizer /middle-end. Takes an AST and builds a RVSDG representation using basic lowlevel-ish operations.

minisdf-backend-spirv: simple SPIR-V backend based onrspirv.

msdfc:MiniSdfCompiler: Simple library that accepts a miniSDF compiler source file, or AST, and generates, if possible, a SPIR-V Binary.

The following example defines a field that subtracts smoothed-box from a unit box that repeats in the domain 4³.

The offset of the subtracted box is set by an externaloffset parameter. Which can be animated through the callingshader.

field myfield(offset: vec3){    sub(){        repeat(4.0, 4.0, 4.0){            box(vec3(1.0, 1.0, 1.0))        }    }{        translate(offset){            smooth(0.25){                box(vec3(1.0, 1.0, 2.0))            }        }    }}

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE orhttp://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT orhttp://opensource.org/licenses/MIT)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.