This project is part of the @thi.ng/umbrella monorepo.
GLSL code generator for @thi.ng/shader-ast. Currently supports GLSL ES 1.00 (WebGL) & GLSL ES 3.00 (WebGL 2).
This package is also used for shader assembly by @thi.ng/webgl.
yarn add @thi.ng/shader-ast-glslThere're are several shader-ast & webgl examples in the
/examples
folder of this repo, for example...
(Possibly non-exhaustive list, live demo links in readme's)
- 2D SDF
- Raymarching
- Simplex noise
- Textured tunnel
- Cubemap
- GPGPU basics
- MSDF font rendering
- SSAO deferred rendering
Basic GLSL code generation:
import { assign, defMain, output, program, uniform, vec4 } from "@thi.ng/shader-ast";
import { GLSLVersion, targetGLSL } from "@thi.ng/shader-ast-glsl";
const glsl = targetGLSL({
// target WebGL2
version: GLSLVersion.GLSL_300,
// emit #version pragma
versionPragma: true,
// fragment shader
type: "fs",
// custom prelude
prelude: `// custom GLSL source string injection, e.g.
#define PI 3.1415926`
});
let color: Vec3Symbol;
let fragColor: Vec4Symbol;
glsl(
program([
color = uniform("vec3", "color"),
fragColor = output("vec4", "fragColor", { loc: 0 }),
defMain(()=> [
assign(fragColor, vec4(color, 1))
])
])
)#version 300 es
// custom GLSL source string injection, e.g.
#define PI 3.1415926
uniform vec3 color;
layout(location=0) out vec4 fragColor;
void main() {
fragColor = vec4(color, 1.0);
}- Karsten Schmidt
© 2018 Karsten Schmidt // Apache Software License 2.0