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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>浅入深出，带你了解抗锯齿</title>
<style>
body, html {
margin: 0;
padding: 0;
overflow: hidden;
height: 100%;
}
</style>
</head>
<body>
<canvas id="myCanvas"></canvas>
<script src="utility.js"></script>
<script src="textDrawer.js"></script>
<script src="triangle_SSAA.js"></script>
<script src="triangle_MSAA.js"></script>
<script src="triangle_TAA.js"></script>
<script src="triangle_FXAA.js"></script>
<script src="pixel.js"></script>
<script src="pixel_TAA.js"></script>
<script src="title.js"></script>
<script>
const canvas = document.getElementById('myCanvas');
var ctx = canvas.getContext('2d');
canvas.width = window.innerWidth;
canvas.height = canvas.width * 0.625;
var stage = 1;
var maxStage = 6;
var stageInstance = 'stage' + stage + 'Instance';
var originX = 0;
var originY = 0;
var scale = 1;
for (var i = 1; i <= maxStage; i++) { // Adjust the range as needed for your stages
var script = document.createElement('script');
script.src = 'stage' + i + '.js';
document.head.appendChild(script);
}
let frames = 0;
let lastTimestamp = performance.now();
function draw() {
// Clear the canvas
canvas.width = canvas.width; // This clears the canvas
window[stageInstance].doSomething();
// Calculate elapsed time and FPS
const currentTimestamp = performance.now();
const elapsed = currentTimestamp - lastTimestamp;
lastTimestamp = currentTimestamp;
}
// Call the draw function every 20 milliseconds
setInterval(draw, 20);
// Add key listener
window.addEventListener('keydown', (event) => {
const keyCode = event.keyCode;
if (keyCode === 38) { // Up arrow key
if(stage > 1){
stage--;
stageInstance = 'stage' + stage + 'Instance';
window[stageInstance].reset();
}
} else if (keyCode === 40) { // Down arrow key
if(stage < maxStage){
stage++;
stageInstance = 'stage' + stage + 'Instance';
window[stageInstance].reset();
}else{
window[stageInstance].progress();
}
} else if (keyCode === 13) { // Enter key
window[stageInstance].progress();
}
});
</script>
</body>
</html>