39635 2010-05-24 18:09:40 -0700 Improve canvas perf test accuracy. 2010-05-25 00:49:01 -0700 1 1 1 Unclassified WebKit New Bugs 528+ (Nightly build) Other OS X 10.5 RESOLVED FIXED P2 Normal --- 1 levin webkit-unassigned mjs oldest_to_newest 230017 0 levin 2010-05-24 18:09:40 -0700 Improve canvas perf test fairness. 230018 1 56953 levin 2010-05-24 18:13:45 -0700 Created attachment 56953 Patch 230020 2 levin 2010-05-24 18:17:19 -0700 With these changes the results in chromium are nearly unchanged, but now the results from the gpu enabled firefox show how long the underlying operations really take. From my run with Firefox 3.7a4 with the DirectX enabled: Direct image copy: 93.5ms Indirect copy with (via ImageData): 121.25ms Copy with 2x scale: 492ms Copy with 0.5x scale 171ms Copy with rotate: 10.5 ms 230125 3 56981 levin 2010-05-24 23:58:14 -0700 Created attachment 56981 Patch 230130 4 levin 2010-05-25 00:17:00 -0700 From last time, I remove the scale calls that I was sure were needed but apparently were not. (I must have made a mistake in the Javascript code with the context I was using when I hit this issue.) I fixed a few issues in my last patch: > output.innerHTML += "Indirect copy with (via ImageData): " + (time/2) + "ms<br>"; ^^^^ the /2 shouldn't be here. > time = (new Date()) - startDate; Old time calculation was present before the result for 0.5 scale. > time = timeCanvasOperation(scaledDownContext, ^^^^ flushing the wrong context. > function () { > rotatedContext.drawImage(original, 0, -original.height); > }); As such the results changed to more accurately reflect perf, for Firefox 3.7a4 Direct image copy: 96ms Indirect copy with (via ImageData): 346ms (No longer dividing by 2 when we shouldn't) Copy with 2x scale: 277ms (likely lower due to allowing garbage collection) Copy with 0.5x scale: 44ms (now calc'ing time correctly with subtracting out the overhead) Copy with rotate: 120 ms (now flushing the correct context) 230134 5 56981 mjs 2010-05-25 00:36:55 -0700 Comment on attachment 56981 Patch r=me 230139 6 levin 2010-05-25 00:49:01 -0700 Committed as http://trac.webkit.org/changeset/60140 56953 2010-05-24 18:13:45 -0700 2010-05-24 23:58:09 -0700 Patch bug-39635-20100524181514.patch text/plain 5994 levin ZGlmZiAtLWdpdCBhL1dlYktpdFNpdGUvQ2hhbmdlTG9nIGIvV2ViS2l0U2l0ZS9DaGFuZ2VMb2cK aW5kZXggZDRlM2FlY2ZhNDAwY2I4MmU4OGVhYzEzZjQyNDlmZTQ4YmQyNGU5Ny4uZjYyMGU5NzFl NWJhNzc2MTE5NWZmOTgzNzNmNWFkMmRiMDBiNjg5ZSAxMDA2NDQKLS0tIGEvV2ViS2l0U2l0ZS9D aGFuZ2VMb2cKKysrIGIvV2ViS2l0U2l0ZS9DaGFuZ2VMb2cKQEAgLTEsMyArMSwxOSBAQAorMjAx MC0wNS0yNCAgRGF2aWQgTGV2aW4gIDxsZXZpbkBjaHJvbWl1bS5vcmc+CisKKyAgICAgICAgUmV2 aWV3ZWQgYnkgTk9CT0RZIChPT1BTISkuCisKKyAgICAgICAgSW1wcm92ZSBjYW52YXMgcGVyZiB0 ZXN0IGZhaXJuZXNzLgorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5j Z2k/aWQ9Mzk2MzUKKworICAgICAgICAqIGRlbW9zL2NhbnZhcy1wZXJmL2NhbnZhcy5odG1sOgor ICAgICAgICAgIDEuIENoYW5nZSB0aGUgdmFyaW91cyB0ZXN0cyB0byBnZXQgdGhlIGltYWdlIGRh dGEgZm9yIHRoZSByZXN1bHQKKyAgICAgICAgICAgICB0byBoZWxwIGVuc3VyZSB0aGF0IHRoZSBv 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