package oglsl

Oglsl

Oglsl is a set of module signatures providing overloadable functions and operators and abstract types for writing GLSL ^wiki-glsl in OCaml. In other words, it is a tagless-final ^jfp eDSL - abstract algebra of GLSL embedded in OCaml.

Oglsl isn't useful on its own. (TBA)

Example

An introduction to Oglsl is available at the wiki. For a use case of Oglsl in one short snippet, here it is:

module SHADER
(C: Oglsl.Glsl)
(C_stdlib: Oglsl.Glsl__opengl(C).S) = struct
  open C
  open C_stdlib

  let vertex_shader =
    prog begin
    (#!) version v3_3_0 core >>=+ fun _ ->
    let+ pos = In.ref__vec3 ~layout__location:0 () in
    func0 void main @@ fun () ->
      Gl.position := Vec4.of_vec3 !pos (float 1.0)
    end
end

which translates to (assuming we provide an interpreter implementation):

#version 330 core
layout(location = 0) in vec3 pos;
void main() {
  gl_Position = vec4(pos, 1.0);
}

Let's dissect what's going on:

• TBA
• TBA