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webgl

README.md

webgl

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This project is part of the @thi.ng/umbrella monorepo.

About

WebGL & GLSL abstraction layer.

Largely declarative WebGL 1.0 / 2.0 abstraction layer, partially ported & updated from Clojure/ClojureScript versions of thi.ng/geom.

Features

  • Extensive set of WebGL related types & interfaces
  • Declarative shader definition
    • option to fully define shaders in TypeScript and transpile to GLSL (via @thi.ng/shader-ast)
    • attribute, varying, uniform & output type declarations via a simple config object
    • GLSL code generation of data type declarations
    • automatic support for GLSL ES 1.0 & 3.0
    • optional layout attrib layout support for GLES 3 (WebGL2)
    • automatic & typed uniform setters
    • pre-declared desired GL draw state flags / settings
    • customizable shader presets
  • Declarative geometry, attribute & index buffer specs
  • Declarative instancing (always available in WebGL2, or via ANGLE ext in WebGL1)
  • Texture wrapper, declarative config
  • Comprehensive texture format info (channels, strides, renderable, filterable etc.)
  • FBO support with multiple attachments & render buffers
  • Multi-pass shader pipeline (e.g. for GPGPU tasks)
  • Pixel reading from main color buffer and textures
  • Geometry & texture generators
  • WebGL extension helpers & semi-automatic extension enabling
  • WebGL canvas creation / setup

Status

BETA - possibly breaking changes forthcoming

Support packages

Related packages

  • @thi.ng/ecs - Entity Component System based around typed arrays & sparse sets
  • @thi.ng/geom - Functional, polymorphic API for 2D geometry types & SVG generation
  • @thi.ng/imgui - Immediate mode GUI with flexible state handling & data only shape output
  • @thi.ng/matrices - Matrix & quaternion operations for 2D/3D geometry processing
  • @thi.ng/shader-ast - DSL to define shader code in TypeScript and cross-compile to GLSL, JS and other targets
  • @thi.ng/soa - SOA & AOS memory mapped structured views with optional & extensible serialization
  • @thi.ng/vectors - Optimized 2d/3d/4d and arbitrary length vector operations
  • @thi.ng/vector-pools - Data structures for managing & working with strided, memory mapped vectors

Installation

yarn add @thi.ng/webgl
// ES module
<script type="module" src="https://unpkg.com/@thi.ng/webgl?module" crossorigin></script>

// UMD
<script src="https://unpkg.com/@thi.ng/webgl/lib/index.umd.js" crossorigin></script>

Package sizes (gzipped, pre-treeshake): ESM: 11.29 KB / CJS: 11.45 KB / UMD: 11.28 KB

Dependencies

Usage examples

Several demos in this repo's /examples directory are using this package.

A selection:

Screenshot Description Live demo Source
Evolutionary shader generation using genetic programming 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
WebGL multi-colored cube mesh Demo Source
WebGL cube maps with async texture loading Demo Source
WebGL instancing, animated grid Demo Source
WebGL MSDF text rendering & particle system Demo Source
Minimal multi-pass / GPGPU example Demo Source
Shadertoy-like WebGL setup Demo Source
WebGL screenspace ambient occlusion Demo Source

API

Generated API docs

TODO

Authors

Maintainer

Contributors

License

© 2014 - 2020 Karsten Schmidt // Apache Software License 2.0