<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>一个纯纯的WegGL小例子</title>
</head>
<body>
<canvas id="myCanvas" width="600" height="450"></canvas>
<script>
var canvas = document.getElementById('myCanvas');
var gl = canvas.getContext('webgl');
var vertCode = ''
+ 'void main() {\n'
+ ' gl_Position = vec4(0.0, 0.0, 0.0, 1.0);\n'
+ ' gl_PointSize = 10.0;\n'
+ '}\n';
var vertShader = gl.createShader(gl.VERTEX_SHADER);
gl.shaderSource(vertShader, vertCode);
gl.compileShader(vertShader);
var fragCode = ''
+ 'void main() {\n'
+ ' gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n'
+ '}\n';
var fragShader = gl.createShader(gl.FRAGMENT_SHADER);
gl.shaderSource(fragShader, fragCode);
gl.compileShader(fragShader);
var shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertShader);
gl.attachShader(shaderProgram, fragShader);
gl.linkProgram(shaderProgram);
gl.useProgram(shaderProgram);
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.drawArrays(gl.POINTS, 0, 1);
</script>
</body>
</html>
一个纯纯的WegGL小例子
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转载自wanlic2008.iteye.com/blog/2356265
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