WebGL-tutorial/simple-triangles1.html at master · hguo/WebGL-tutorial · GitHub

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<!DOCTYPE html>

<html>

<head>
<title>hwshen WebGL &mdash; 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, 0.0, 1.0); // set all fragments to red
    }
</script>
<!--  ************** Vertex Shader ************* -->
<script id="shader-vs" type="x-shader/x-vertex">
    attribute vec3 aVertexPosition;
    uniform float offX;
    uniform float offY;

    void main(void) {
        gl_Position = vec4(
            aVertexPosition.x + offX,
            aVertexPosition.y + offY,
            aVertexPosition.z,
            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-triangles1.js"></script>


</head>


<body onload="webGLStart();">

    <canvas id="code00-canvas" style="border: none;" width="700" height="500"></canvas>

    <br/>

</body>


</html>