效果
image.png
代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
</style>
</head>
<body>
<canvas id="canvas" width="600" height="600" style="border: 1px solid #ff0000;"></canvas>
<script>
let canvas = document.getElementById('canvas');
let gl = canvas.getContext('webgl');
gl.clearColor(1.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
</script>
</body>
</html>
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