WebGL tutorial

WebGL 은 WebGL을 지원하는 브라우져에서 plugin을 사용하지 않고도, 웹 콘텐츠가 OpenGL ES 2.0 기반의 API를 이용하여 HTML <canvas>에서 3D 랜더링을 할 수 있도록 해 줍니다. WebGL 프로그램은 JavaScripts로 작성 된 제어 코드와 컴퓨터의 Graphics Processing Unit (GPU)에서 실행되는 특수한 효과를 내는 코드(Shader code)로 구성 됩니다. WebGL 요소들은 다른 HTML요소들과 섞어서 함께 사용 할 수 있으며 페이지의 다른 부분이나 페이지 배경과 함께 사용 할 수 있습니다.

This tutorial describes how to use the <canvas> element to draw WebGL graphics, starting with the basics. The examples provided should give you some clear ideas what you can do with WebGL and will provide code snippets that may get you started in building your own content.

Before you start

Using the <canvas> element is not very difficult, but you do need a basic understanding of HTML and JavaScript. The <canvas> element and WebGL are not supported in some older browsers, but are supported in recent versions of all major browsers. In order to draw graphics on the canvas we use a JavaScript context object, which creates graphics on the fly.

In this tutorial

Getting started with WebGL
How to set up a WebGL context.
Adding 2D content to a WebGL context
How to render simple flat shapes using WebGL.
Using shaders to apply color in WebGL
Demonstrates how to add color to shapes using shaders.
Animating objects with WebGL
Shows how to rotate and translate objects to create simple animations.
Creating 3D objects using WebGL
Shows how to create and animate a 3D object (in this case, a cube).
Using textures in WebGL
Demonstrates how to map textures onto the faces of an object.
Lighting in WebGL
How to simulate lighting effects in your WebGL context.
Animating textures in WebGL
Shows how to animate textures; in this case, by mapping an Ogg video onto the faces of a rotating cube.