Crate reflow_sdf 

SDF (Signed Distance Function) intermediate representation and WGSL code generation.

This crate provides the building blocks for procedural geometry rendering through Reflow’s actor graph. Each actor contributes an [SdfNode] to a tree, and the codegen module compiles the tree to a complete WGSL ray marching shader.

Architecture

Actor Graph (Reflow)          SDF IR Tree              WGSL Shader
┌──────────┐                  ┌─────────┐
│ Sphere   │──┐               │ Smooth  │              fn sdf(p: vec3f) -> f32 {
└──────────┘  ├─► Smooth ──►  │ Union   │  ──codegen──►  let d0 = sphere(p, 1.0);
┌──────────┐  │   Union       │ ┌─┴──┐  │                let d1 = box(p, vec3(1));
│ Box      │──┘               │ S    B  │                return smin(d0, d1, 0.3);
└──────────┘                  └─────────┘              }

Modules

• ir — SDF node types (primitives, operations, transforms, materials)
• codegen — Compile SDF IR tree to WGSL shader source
• primitives — CPU-side SDF evaluation (for bounding, picking, tests)

Modules

codegen

WGSL code generation from SDF IR trees.

ir

SDF Intermediate Representation.

marching_cubes

Marching Cubes lookup tables and WGSL shader generation.

noise

CPU-side noise functions for procedural generation.

primitives

CPU-side SDF evaluation for testing, bounding boxes, and picking.