reflow_shader

Shader graph IR and WGSL material code generation for Reflow — Cook–Torrance PBR, procedural textures, color/math/effect nodes, and SDF shade compilation.

Most users should depend on reflow_rt which re-exports this crate as reflow_rt::shader. Direct use is appropriate when authoring custom material libraries or shader nodes outside the standard catalog.

What it provides

• ShaderNode IR covering inputs, constants, math, color, textures, effects, and BSDFs (PrincipledBsdf with transmission, IOR, clearcoat, SSS, sheen, anisotropic).
• codegen::compile — rasterized vertex/fragment WGSL for mesh materials.
• codegen::compile_sdf_shade_named — injectable shade functions for SDF ray marching.
• Shared PBR_FUNCTIONS / PBR_SDF_FUNCTIONS WGSL blocks deduplicated across slots.

Relationship to other crates

• Consumed by GPU shader nodes in reflow_components (compiler, principled, math, effects, textures, inputs).
• Pairs with reflow_sdf so a shader-graph material can shade a specific SDF material slot.

License

MIT OR Apache-2.0.