third_party/WebKit/PerformanceTests/Canvas/draw-video-to-hw-accelerated-canvas-2d.html - Issue 2399013003: Tweaking the draw-video-to-hw-accelerated-canvas-2d to stay on GPU

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Issue 2399013003: Tweaking the draw-video-to-hw-accelerated-canvas-2d to stay on GPU (Closed)

Patch Set: Created 4 years, 2 months ago

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1 <!DOCTYPE html>	1 <!DOCTYPE html>

2 <html>	2 <html>

3 <body>	3 <body>

4 <video id="video" loop></video>	4 <video id="video" loop></video>

5 <script src="../resources/runner.js"></script>	5 <script src="../resources/runner.js"></script>

6 <script src="resources/canvas_runner.js"></script>	6 <script src="resources/canvas_runner.js"></script>

7 <script>	7 <script>

8 var videoElement = document.getElementById("video");	8 var videoElement = document.getElementById("video");

9 var destCanvas2D = document.createElement("canvas");	9 var destCanvas2D = document.createElement("canvas");

10 var destCtx2D = destCanvas2D.getContext("2d");	10 var destCtx2D = destCanvas2D.getContext("2d");

11 var dummyCanvas2D = document.createElement("canvas");	11 var dummyCanvas2D = document.createElement("canvas");

12 var dummyCtx2D = dummyCanvas2D.getContext("2d");	12 var dummyCtx2D = dummyCanvas2D.getContext("2d");

13	13

14 dummyCanvas2D.width = 1;

15 dummyCanvas2D.height = 1;

16

17 function setSize(width, height) {	14 function setSize(width, height) {

18 destCanvas2D.width = width;	15 destCanvas2D.width = width;

19 destCanvas2D.height = height;	16 destCanvas2D.height = height;

	17 dummyCanvas2D.width = width;

	18 dummyCanvas2D.height = height;

20 }	19 }

21	20

22 function startPerfTest() {	21 function startPerfTest() {

23 CanvasRunner.start({	22 CanvasRunner.start({

24 description: "This bench test checks the speed on drawing Video element to HW accelerated Canvas2D(1024x1024).",	23 description: "This bench test checks the speed on drawing Video element to HW accelerated Canvas2D(1024x1024).",

25 doRun: doRun,	24 doRun: doRun,

26 ensureComplete: ensureComplete});	25 ensureComplete: ensureComplete});

27 }	26 }

28	27

29 function doRun() {	28 function doRun() {

30 // draw Video	29 // draw Video

31 destCtx2D.drawImage(videoElement, 0, 0);	30 destCtx2D.drawImage(videoElement, 0, 0);

32 }	31 }

33	32

34 function ensureComplete() {	33 function ensureComplete() {

35 // Using destCanvas2D as a source image is just to flush out the content whe n	34 // Using destCanvas2D as a source image is just to flush out the content whe n

36 // accelerated 2D canvas is in use.	35 // accelerated 2D canvas is in use.

	36 // dummyCtx2D must also be accelerated to prevent destCanvas2D from becoming

	37 // non-accelerated due to the DisableAccelerationToAvoidReadbacks heuristic.

37 dummyCtx2D.drawImage(destCanvas2D, 0, 0, 1, 1, 0, 0, 1, 1);	38 dummyCtx2D.drawImage(destCanvas2D, 0, 0, 1, 1, 0, 0, 1, 1);

38 }	39 }

39	40

40 window.onload = function () {	41 window.onload = function () {

41 // It should use setMinimumAccelerated2dCanvasSize() to enable accelerated C anvas for a specified size	42 // It should use setMinimumAccelerated2dCanvasSize() to enable accelerated C anvas for a specified size

42 // but this API is not available in JS or WebPage. Assume the threshold size is 256x257	43 // but this API is not available in JS or WebPage. Assume the threshold size is 256x257

43 // and the dest canvas is HW accelerated Canvas when setting its size to 102 4x1024.	44 // and the dest canvas is HW accelerated Canvas when setting its size to 102 4x1024.

44 setSize(1024, 1024);	45 setSize(1024, 1024);

45	46

46 videoElement.src = "resources/bear-1280x720.mp4";	47 videoElement.src = "resources/bear-1280x720.mp4";

47 if(!videoElement.canPlayType('video/mp4').replace(/no/, '')) {	48 if(!videoElement.canPlayType('video/mp4').replace(/no/, '')) {

48 CanvasRunner.logFatalError("video/mp4 is unsupported");	49 CanvasRunner.logFatalError("video/mp4 is unsupported");

49 };	50 };

50 CanvasRunner.startPlayingAndWaitForVideo(videoElement, startPerfTest);	51 CanvasRunner.startPlayingAndWaitForVideo(videoElement, startPerfTest);

51 }	52 }

52	53

53 </script>	54 </script>

54 </body>	55 </body>

55 </html>	56 </html>

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