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simple-triangles.html
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<!DOCTYPE html>
<html>
<head>
<title>hwshen WebGL — Simple Triangles </title>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
<!-- ************** Fragment Shader ************* -->
<script id="shader-fs" type="x-shader/x-fragment">
void main(void) {
gl_FragColor = vec4(1.0, 0, 0, 1.0); // set all fragments to red
}
</script>
<!-- ************** Vertex Shader ************* -->
<script id="shader-vs" type="x-shader/x-vertex">
attribute vec3 aVertexPosition;
void main(void) {
gl_Position = vec4(aVertexPosition, 1.0); // by pass the vertex coordinates; all need to be in [-1,-1] to be vislble
}
</script>
<script type="text/javascript" src="shaders_setup.js"></script>
<script type="text/javascript" src="simple-triangles.js"></script>
</head>
<body onload="webGLStart();">
<canvas id="code00-canvas" style="border: none;" width="700" height="500"></canvas>
<br/>
</body>
</html>