<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=600">
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>WebMetal Hello World demo</title>
<link rel="stylesheet" href="shared.css">
<link rel="stylesheet" href="https://webkit.org/wp-content/themes/webkit/style.css">
<link rel="stylesheet" href="https://www.apple.com/wss/fonts?family=Myriad+Set+Pro&amp;v=1">
<script src="shared.js"></script>
<script src="hello.js"></script>
<script id="library" type="x-shader/x-metal">
#include <metal_stdlib>

using namespace metal;

struct Vertex
{
    float4 position [[position]];
};

vertex Vertex vertex_main(uint vid [[vertex_id]])
{
    Vertex v;
    switch (vid) {
    case 0:
        v.position = float4(-.75, -.75, 0, 1);
        break;
    case 1:
        v.position = float4(.75, -.75, 0, 1);
        break;
    case 2:
        v.position = float4(0, .75, 0, 1);
        break;
    default:
        v.position = float4(0, 0, 0, 1);
    }
    return v;
}

fragment float4 fragment_main(Vertex vertexIn [[stage_in]])
{
    return float4(1.0, 0.0, 0.0, 1.0);
}
</script>
</head>
<body>
<canvas></canvas>
<div id="error">
    <h2>WebMetal not available</h2>
    <p>
        Make sure you are on a system with WebMetal enabled. In
        Safari, first make sure the Developer Menu is visible (Preferences →
        Advanced), then Develop → Experimental Features → Enable WebMetal.
    </p>
</div>
</body>
</html>