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index.html
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<!doctype html>
<html lang="en-us">
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>GLSL Optimizer Emscripten</title>
<style>
body {
font-family: sans-serif;
margin: 0;
padding: 10px;
}
textarea {
width: 600px;
height: 400px;
font-family: monospace;
font-size: 13px;
padding: 10px;
}
</style>
</head>
<body>
<h1>GLSL Optimizer</h1>
<p>
This is the emscripten/asm.js version of GLSL optimizer. Check out the <a href="https://github.com/zz85/glsl-optimizer/">repo on github</a>.
</p>
<p>
<div id="statusLabel"></div>
<div id="errorLabel"></div>
</p>
<p>
<select id="shaderType">
<option value="fs">Fragment shader</option>
<option value="vs">Vertex shader</option>
</select>
<select id="target">
<option value="1">OpenGL</option>
<option value="2" selected>OpenGL ES 2.0</option>
<option value="3">OpenGL ES 3.0</option>
</select>
<button onclick="optimize();">Optimize!</button>
</p>
<p>
<textarea id="source">
#define SPREAD 8.00
#define MAX_DIR_LIGHTS 0
#define MAX_POINT_LIGHTS 0
#define MAX_SPOT_LIGHTS 0
#define MAX_HEMI_LIGHTS 0
#define MAX_SHADOWS 0
#define GAMMA_FACTOR 2
uniform mat4 viewMatrix;
uniform vec3 cameraPosition;
uniform vec2 resolution;
uniform float time;
uniform sampler2D texture;
void main() {
vec2 uv = gl_FragCoord.xy / resolution.xy;
float v = texture2D( texture, uv ).x;
if (v == 1000.) discard;
v = sqrt(v);
gl_FragColor = vec4( vec3( 1. - v / SPREAD ), 1.0 );;
}
</textarea>
</p>
<script type='text/javascript'>
var statusLabel = document.getElementById('statusLabel');
var GLSLOptimizer = {
onError: function(reason) {
// console.error(e);
statusLabel.textContent = reason;
},
onSuccess: function(code) {
errorLabel.textContent = statusLabel.textContent = '';
source.value = code;
},
}
var optimize_glsl = function() {
alert('not loaded yet!');
}
function postRun() {
optimize_glsl = Module.cwrap('optimize_glsl', 'string', ['string', 'number', 'number']);
}
function optimize() {
var results = optimize_glsl( source.value, +target.value, shaderType.value === "vs");
console.log('results', results)
if (results.indexOf('Error:') > -1) {
GLSLOptimizer.onError(results);
} else {
GLSLOptimizer.onSuccess(results);
}
}
var Module = {
preRun: [],
postRun: [ postRun ],
print: function(text) {
console.log('::print::', text);
errorLabel.textContent = text;
},
printErr: function(text) {
text = Array.prototype.slice.call(arguments).join(' ');
if (0) { // XXX disabled for safety typeof dump == 'function') {
dump(text + '\n'); // fast, straight to the real console
} else {
console.error(text);
}
},
setStatus: function(text) {
// console.log('::status::', text)
statusLabel.textContent = text;
},
totalDependencies: 0,
monitorRunDependencies: function(left) {
// console.error('monitorRunDependencies', left);
this.totalDependencies = Math.max(this.totalDependencies, left);
Module.setStatus(left ? 'Preparing... (' + (this.totalDependencies-left) + '/' + this.totalDependencies + ')' : 'All downloads complete.');
},
locateFile: function(hoho) {
return 'glsl-optimizer.js.mem';
}
};
Module.setStatus('Downloading...');
window.onerror = function(event) {
Module.setStatus('Exception thrown, see JavaScript console');
Module.setStatus = function(text) {
if (text) Module.printErr('[post-exception status] ' + text);
};
};
</script>
<script async type="text/javascript" src="glsl-optimizer.js"></script>
<style>#forkongithub a{background:#000;color:#fff;text-decoration:none;font-family:arial,sans-serif;text-align:center;font-weight:bold;padding:5px 40px;font-size:1rem;line-height:2rem;position:relative;transition:0.5s;}#forkongithub a:hover{background:#c11;color:#fff;}#forkongithub a::before,#forkongithub a::after{content:"";width:100%;display:block;position:absolute;top:1px;left:0;height:1px;background:#fff;}#forkongithub a::after{bottom:1px;top:auto;}@media screen and (min-width:800px){#forkongithub{position:absolute;display:block;top:0;right:0;width:200px;overflow:hidden;height:200px;z-index:9999;}#forkongithub a{width:200px;position:absolute;top:60px;right:-60px;transform:rotate(45deg);-webkit-transform:rotate(45deg);-ms-transform:rotate(45deg);-moz-transform:rotate(45deg);-o-transform:rotate(45deg);box-shadow:4px 4px 10px rgba(0,0,0,0.8);}}</style><span id="forkongithub"><a href="https://github.com/zz85/glsl-optimizer/">Fork me on GitHub</a></span>
</body>
</html>