Merge pull request gpujs#44 from gpujs/eugene-#25-demo

PicoCreator · PicoCreator · commit ce6bbca633aa · 2016-05-08T02:13:14.000+08:00
Eugene gpujs#25 demo
diff --git a/README.md b/README.md
@@ -30,6 +30,8 @@ var C = mat_mult(A, B);
 
 You can run a benchmark of this [here](http://gpu.rocks). Typically, it will run at 1-15x speedup depending on your hardware.
 
+Or alternatively you can experiment around with the [kernel playground here](http://gpu.rocks/playground/playground.html)
+
 # Getting Started
 
 ## Installation
diff --git a/demo/playground.html b/demo/playground.html
@@ -2,7 +2,17 @@
 <html>
 	<head>
 		<meta charset="utf-8">
-		<title>GPU.JS - playground : GPU Accelerated JavaScript</title>
+		<meta http-equiv="X-UA-Compatible" content="IE=edge">
+		<meta name="viewport" content="width=device-width, initial-scale=1">
+		<meta name="description" content="gpu.js - playground. Run and benchmark demos for gpu.js - is a single-file JavaScript library for GPGPU in the browser. gpu.js will automatically compile specially written JavaScript functions into shader language and run them on the GPU using the WebGL API. In the case where WebGL is not available, the functions will still run in regular JavaScript." />
+
+		<meta property="og:title" content="gpu.js - playground : GPU Accelerated JavaScript" />
+		<meta property="og:type" content="website" />
+		<meta property="og:url" content="http://gpu.rocks/" />
+		<meta property="og:image" content="http://gpu.rocks/img/ogimage.png" />
+		
+		<title>gpu.js - playground : GPU Accelerated JavaScript</title>
+		<link rel="icon" href="img/jelly.png">
 		
 		<!-- jquery + bootstrap -->
 		<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.3/jquery.js"></script>
diff --git a/demo/playground.js b/demo/playground.js
@@ -366,7 +366,7 @@ $(function() {
 		"function kernel(A,B) {\n"+
 		"	var sum = 0;\n"+
 		"	for (var i=0; i<512; i++) {\n"+
-		"		sum = (sum*A[this.thread.x] + i)/B[this.thread.x];\n"+
+		"		sum = Math.pow((A[this.thread.x]-sum)/B[this.thread.x],2);\n"+
 		"	}\n"+
 		"	return sum;\n"+
 		"}";
@@ -563,9 +563,9 @@ $(function() {
 			if( cpu_time == gpu_time ) {
 				gain_per = 0;
 			} else if( gpu_time < cpu_time ) {
-				gain_per = cpu_time / gpu_time * 100.0;
+				gain_per = cpu_time / gpu_time * 100.0 - 100.0;
 			} else {
-				gain_per = -(gpu_time / cpu_time * 100.0);
+				gain_per = -(gpu_time / cpu_time * 100.0) + 100.0;
 			}
 			
 			bench_labels.push( sampleSize );
