@thi.ng/shader-ast-glsl
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0.4.116 • Public • Published

@thi.ng/shader-ast-glsl

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[!NOTE] This is one of 190 standalone projects, maintained as part of the @thi.ng/umbrella monorepo and anti-framework.

🚀 Please help me to work full-time on these projects by sponsoring me on GitHub. Thank you! ❤️

About

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.

Status

STABLE - used in production

Search or submit any issues for this package

Related packages

Installation

yarn add @thi.ng/shader-ast-glsl

ES module import:

<script type="module" src="https://cdn.skypack.dev/@thi.ng/shader-ast-glsl"></script>

Skypack documentation

For Node.js REPL:

const shaderAstGlsl = await import("@thi.ng/shader-ast-glsl");

Package sizes (brotli'd, pre-treeshake): ESM: 1.30 KB

Dependencies

Usage examples

Several projects in this repo's /examples directory are using this package:

Screenshot Description Live demo Source
2D canvas shader emulation Demo Source
HOF shader procedural noise function composition Demo Source
WebGL & JS canvas2D raymarch shader cross-compilation Demo Source
WebGL & JS canvas 2D SDF Demo Source
WebGL & Canvas2D textured tunnel shader Demo Source
Entity Component System w/ 100k 3D particles Demo Source

API

Generated API docs

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);
}

Authors

If this project contributes to an academic publication, please cite it as:

@misc{thing-shader-ast-glsl,
  title = "@thi.ng/shader-ast-glsl",
  author = "Karsten Schmidt",
  note = "https://thi.ng/shader-ast-glsl",
  year = 2019
}

License

© 2019 - 2024 Karsten Schmidt // Apache License 2.0

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Install

npm i @thi.ng/shader-ast-glsl

Weekly Downloads

126

Version

0.4.116

License

Apache-2.0

Unpacked Size

34.4 kB

Total Files

10

Last publish

Collaborators

  • thi.ng