Adding 2d canvas benchmark for GPU to non-GPU drawImage calls.

BUG=464835 Review-Url: https://codereview.chromium.org/2625093003 Cr-Commit-Position: refs/heads/master@{#443021}

Adding 2d canvas benchmark for GPU to non-GPU drawImage calls.
BUG=464835 Review-Url: https://codereview.chromium.org/2625093003 Cr-Commit-Position: refs/heads/master@{#443021}
31d1c20a · junov · Commit bot · b59d006f · 31d1c20a
Commit 31d1c20a authored Jan 11, 2017 by junov Committed by Commit bot Jan 11, 2017
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third_party/WebKit/PerformanceTests/Canvas/draw-hw-accelerated-canvas-2d-to-sw-canvas-2d.html ...Canvas/draw-hw-accelerated-canvas-2d-to-sw-canvas-2d.html +57 -0

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--- a/third_party/WebKit/PerformanceTests/Canvas/draw-hw-accelerated-canvas-2d-to-sw-canvas-2d.html
+++ b/third_party/WebKit/PerformanceTests/Canvas/draw-hw-accelerated-canvas-2d-to-sw-canvas-2d.html
+<!DOCTYPE html>
+<html>
+<body>
+<script src="../resources/runner.js"></script>
+<script src="resources/canvas_runner.js"></script>
+<script>
+var sourceCanvas2D = document.createElement("canvas");
+var sourceCtx2D = sourceCanvas2D.getContext("2d");
+var destCanvas2D = document.createElement("canvas");
+var destCtx2D = destCanvas2D.getContext("2d");
+var dummyCanvas2D = document.createElement("canvas");
+var dummyCtx2D = dummyCanvas2D.getContext("2d");
+ 
+function setSize(sourceWidth, sourceHeight, destWidth, destHeight) {
+    sourceCanvas2D.width = sourceWidth;
+    sourceCanvas2D.height = sourceHeight;
+    destCanvas2D.width = destWidth;
+    destCanvas2D.height = destHeight;
+    dummyCanvas2D.width = destWidth;
+    dummyCanvas2D.height = destHeight;
+}
+
+function rand(range) {
+    return Math.floor(Math.random() * range);
+}
+
+function fillCanvas(ctx2d, canvas2d) {
+    ctx2d.fillStyle = "rgba(" + rand(255) + "," + rand(255) + "," + rand(255)  + "," + rand(255) + ")";
+    ctx2d.fillRect(0, 0, canvas2d.width, canvas2d.height);
+}
+
+function doRun() {
+    // draw static Canvas
+    destCtx2D.drawImage(sourceCanvas2D, 0, 0);
+}
+
+function ensureComplete() {
+    // Using destCanvas2D as a source image is just to flush out the content when
+    // accelerated 2D canvas is in use. 
+    dummyCtx2D.drawImage(destCanvas2D, 0, 0, 1, 1, 0, 0, 1, 1);
+}
+
+window.onload = function () {
+    // It should use setMinimumAccelerated2dCanvasSize() to enable accelerated Canvas for a specified size
+    // but this API is not available in JS or WebPage. Assume the threshold size is 256x257
+    // and the dest canvas is not HW accelerated Canvas when setting its size to 200x200.
+    setSize(1024, 1024, 200, 200);
+    fillCanvas(sourceCtx2D, sourceCanvas2D);
+    CanvasRunner.start({
+        description: "This bench test checks the speed on drawing static 2d Canvas(1024x1024) to a canvas that is initially not accelerated (200x200).",
+        doRun: doRun,
+        ensureComplete: ensureComplete});
+}
+
+</script>
+</body>
+</html>