Index: content/test/data/gpu/mem_css3d.html |
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+<!DOCTYPE HTML> |
+<html> |
+<head> |
+<title>GPU Memory Test: Use N MB of GPU Memory with 3D CSS</title> |
+<style> |
+.block { |
+ background: #FF0000; |
+ font-size: 150px; |
+ height: 512px; |
+ position: absolute; |
+ width: 512px; |
+ |
+} |
+.perspective |
+{ |
+ border: 1px solid black; |
+ height: 512px; |
+ text-align: center; |
+ width: 512px; |
+ -webkit-perspective: 600px; |
+ -webkit-perspective-origin: center center; |
+ -webkit-transform-style: preserve-3d; |
+} |
+</style> |
+<script type="text/javascript"> |
+// Generate n 3D CSS elements that are each about 1 MB in size |
+function useGpuMemory(mb_to_use) { |
+ n = mb_to_use; |
+ var blocks = document.getElementById("blocks"); |
+ var blockArray = document.getElementsByClassName("block"); |
+ for (var i = 0; i < n; i++) { |
+ var block = document.createElement("div"); |
+ block.className = "block"; |
+ block.style.WebkitTransform = "translate3d(0px, 0px, " + (i-n+1) + "px)"; |
+ block.style.opacity = 0.1; |
+ block.style.background = "#00FF00"; |
+ block.textContent = i; |
+ blocks.appendChild(block); |
+ } |
+ |
+ // Touch offsetTop to trigger a layout. |
+ document.body.offsetTop; |
+ |
+ // Signal back to the test runner that we're done allocating memory. |
+ domAutomationController.send("DONE_USE_GPU_MEMORY"); |
+} |
+</script> |
+</head> |
+<body> |
+<div id="blocks" class="perspective"/> |
+</body> |
+</html> |