Varjo

Varjo is a Lisp to GLSL compiler.

Varjo has no OpenGL dependency as is designed to be integrated into other projects, see CEPL for an example.

Features

Subset of common lisp. Including:

• Macros
• defmacro, define-compiler-macro, macrolet, symbol-macrolet all supported
• &environment supported (currently custom API for introspection but cltl2 API planned)
• Multiple-value return via values & multiple-value-bind
• local functions via labels
• defstruct which can be used across multiple shaders (Less repeated code)
• limited first-class function support (Functions have to be statically resolved to avoid runtime conditionals)
• inline GLSL expressions
• WIP for declare and extensible declaration identifiers
• Type checking in and across shader stages
• Rolling translate, where out vars from one stage can be automatically fed into the next
• Easy to extend (API still in progress)