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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <body> |
| 4 <script src="../resources/runner.js"></script> |
| 5 <script src="resources/canvas_runner.js"></script> |
| 6 <script> |
| 7 var sourceCanvas2D = document.createElement("canvas"); |
| 8 var sourceCtx2D = sourceCanvas2D.getContext("2d"); |
| 9 var destCanvas2D = document.createElement("canvas"); |
| 10 var destCtx2D = destCanvas2D.getContext("2d"); |
| 11 var dummyCanvas2D = document.createElement("canvas"); |
| 12 var dummyCtx2D = dummyCanvas2D.getContext("2d"); |
| 13 |
| 14 function setSize(sourceWidth, sourceHeight, destWidth, destHeight) { |
| 15 sourceCanvas2D.width = sourceWidth; |
| 16 sourceCanvas2D.height = sourceHeight; |
| 17 destCanvas2D.width = destWidth; |
| 18 destCanvas2D.height = destHeight; |
| 19 dummyCanvas2D.width = destWidth; |
| 20 dummyCanvas2D.height = destHeight; |
| 21 } |
| 22 |
| 23 function rand(range) { |
| 24 return Math.floor(Math.random() * range); |
| 25 } |
| 26 |
| 27 function fillCanvas(ctx2d, canvas2d) { |
| 28 ctx2d.fillStyle = "rgba(" + rand(255) + "," + rand(255) + "," + rand(255) +
"," + rand(255) + ")"; |
| 29 ctx2d.fillRect(0, 0, canvas2d.width, canvas2d.height); |
| 30 } |
| 31 |
| 32 function doRun() { |
| 33 // draw static Canvas |
| 34 destCtx2D.drawImage(sourceCanvas2D, 0, 0); |
| 35 } |
| 36 |
| 37 function ensureComplete() { |
| 38 // Using destCanvas2D as a source image is just to flush out the content whe
n |
| 39 // accelerated 2D canvas is in use. |
| 40 dummyCtx2D.drawImage(destCanvas2D, 0, 0, 1, 1, 0, 0, 1, 1); |
| 41 } |
| 42 |
| 43 window.onload = function () { |
| 44 // It should use setMinimumAccelerated2dCanvasSize() to enable accelerated C
anvas for a specified size |
| 45 // but this API is not available in JS or WebPage. Assume the threshold size
is 256x257 |
| 46 // and the dest canvas is not HW accelerated Canvas when setting its size to
200x200. |
| 47 setSize(1024, 1024, 200, 200); |
| 48 fillCanvas(sourceCtx2D, sourceCanvas2D); |
| 49 CanvasRunner.start({ |
| 50 description: "This bench test checks the speed on drawing static 2d Canv
as(1024x1024) to a canvas that is initially not accelerated (200x200).", |
| 51 doRun: doRun, |
| 52 ensureComplete: ensureComplete}); |
| 53 } |
| 54 |
| 55 </script> |
| 56 </body> |
| 57 </html> |
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Chromium Code Reviews
Issue 2625093003:
Adding 2d canvas benchmark for GPU to non-GPU drawImage calls. (Closed)
