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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>WebGL monkey</title>
<style type="text/css">
<!--
body {background-color:black; color:white}
canvas {float:left;}
-->
</style>
<script id="vertex-shader" type="x-shader/x-vertex">
attribute vec3 a_position;
attribute vec3 a_normal;
uniform mat4 u_proj;
varying mediump vec3 v_position;
varying mediump vec3 v_normal;
void main() {
vec4 pos = u_proj * vec4(a_position,1);
vec4 norm = u_proj * vec4(a_normal,1);
v_position = pos.xyz;
v_normal = norm.xyz;
gl_Position = pos;
}
</script>
<script id="fragment-shader" type="x-shader/x-fragment">
precision mediump float;
varying vec3 v_position;
varying vec3 v_normal;
uniform vec3 u_lightPos;
uniform vec3 u_ambientLight;
void main() {
vec3 lightDirection = normalize(u_lightPos - v_position);
float lighting = max(dot(normalize(v_normal), lightDirection), 0.);
vec3 col = vec3(1,1,1);
gl_FragColor = vec4( col * lighting + u_ambientLight, 1);
}
</script>
<script type="text/javascript" src="webgldemo.js"></script>
</head>
<body>
<canvas id="canvas" height="400" width="400"></canvas>
<div><span id="fps"></span> frames per second</div>
</body>
</html>
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