140667 2015-01-20 00:40:31 -0800 [WinCairo] Accelerated compositing should be disabled when graphics card does not support it. 2020-01-27 02:35:36 -0800 1 1 1 Unclassified WebKit WebKit Misc. 528+ (Nightly build) PC Unspecified REOPENED https://bugs.webkit.org/show_bug.cgi?id=200493 P2 Normal --- 1 peavo webkit-unassigned achristensen alex.christensen bfulgham commit-queue fujii oldest_to_newest 1062667 0 peavo 2015-01-20 00:40:31 -0800 When the graphics card is not able to do accelerated compositing, we should set the relevant preference, so WebCore knows that acceleration is not possible. 1062671 1 244974 peavo 2015-01-20 01:08:24 -0800 Created attachment 244974 Patch 1068370 2 achristensen 2015-02-11 08:57:36 -0800 What happens when we try to use accelerated compositing when it's not available? Does it not draw at all, or crash, or draw slowly? 1068379 3 peavo 2015-02-11 09:53:36 -0800 (In reply to comment #2) > What happens when we try to use accelerated compositing when it's not > available? Does it not draw at all, or crash, or draw slowly? It does not draw at all. When disabling accelerated compositing it will draw, but slowly. 1068384 4 244974 achristensen 2015-02-11 09:59:38 -0800 Comment on attachment 244974 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=244974&action=review I could see this making things a little harder to debug. If we run into a problem in the future, we would also have to ask ourselves if it is a problem with the accelerated path or not. Doesn't DirectX have a non-graphics-card implementation that ideally behaves the same, but slower? Couldn't we use this through ANGLE instead of OpenGL? If that's infeasible, then this is definitely the way to go. > Source/WebKit/win/WebCoreSupport/AcceleratedCompositingContext.cpp:248 > +bool AcceleratedCompositingContext::acceleratedCompositingAvailable() This and the declaration should probably also be inside #if USE(TEXTURE_MAPPER_GL) > Source/WebKit/win/WebCoreSupport/AcceleratedCompositingContext.cpp:263 > + DestroyWindow(testWindow); ::DestroyWindow here and elsewhere 1068416 5 246402 peavo 2015-02-11 11:42:46 -0800 Created attachment 246402 Patch 1068421 6 peavo 2015-02-11 11:47:45 -0800 (In reply to comment #4) > Comment on attachment 244974 [details] > Patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=244974&action=review > Thanks for reviewing :) > I could see this making things a little harder to debug. If we run into a > problem in the future, we would also have to ask ourselves if it is a > problem with the accelerated path or not. Doesn't DirectX have a > non-graphics-card implementation that ideally behaves the same, but slower? > Couldn't we use this through ANGLE instead of OpenGL? If that's infeasible, > then this is definitely the way to go. > That might be possible, but I'm not sure :) I think ANGLE examines the presence of some capabilities, and will not create a renderer if the requirements are not met. > > Source/WebKit/win/WebCoreSupport/AcceleratedCompositingContext.cpp:248 > > +bool AcceleratedCompositingContext::acceleratedCompositingAvailable() > > This and the declaration should probably also be inside #if > USE(TEXTURE_MAPPER_GL) > I think the whole file is inside #if USE(TEXTURE_MAPPER_GL) 1068447 7 246402 achristensen 2015-02-11 12:48:23 -0800 Comment on attachment 246402 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=246402&action=review > Source/WebKit/win/WebCoreSupport/AcceleratedCompositingContext.cpp:254 > + HWND testWindow = ::CreateWindowEx(WS_EX_NOACTIVATE, defWndProcWindowClassName(), L"AcceleratedCompositingTesterWindow", WS_POPUP | WS_VISIBLE | WS_DISABLED, -width, -height, width, height, 0, 0, 0, 0); Is this visible? Does it make a flash on the screen? Does an invisible test work? > Source/WebKit/win/WebCoreSupport/AcceleratedCompositingContext.cpp:307 > + COLORREF pixelColor = ::GetPixel(hdc, 0, 0); We should probably call ::SetPixel to red, swapBuffers with colorComponent as green, and then check to see if pixelColor is green. It is unclear what the pixel would be if the test fails. 1068475 8 246413 peavo 2015-02-11 13:58:47 -0800 Created attachment 246413 Patch 1068479 9 peavo 2015-02-11 14:01:17 -0800 (In reply to comment #7) > Comment on attachment 246402 [details] > Patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=246402&action=review > Thanks for the review :) > > Source/WebKit/win/WebCoreSupport/AcceleratedCompositingContext.cpp:254 > > + HWND testWindow = ::CreateWindowEx(WS_EX_NOACTIVATE, defWndProcWindowClassName(), L"AcceleratedCompositingTesterWindow", WS_POPUP | WS_VISIBLE | WS_DISABLED, -width, -height, width, height, 0, 0, 0, 0); > > Is this visible? Does it make a flash on the screen? Does an invisible > test work? > It's not visible. I'm not sure how it would be with multiple monitors, though. I tested with an invisible window, but that didn't work. 1068494 10 246413 commit-queue 2015-02-11 14:48:33 -0800 Comment on attachment 246413 Patch Clearing flags on attachment: 246413 Committed r179962: <http://trac.webkit.org/changeset/179962> 1068495 11 commit-queue 2015-02-11 14:48:37 -0800 All reviewed patches have been landed. Closing bug. 1562890 12 fujii 2019-08-19 19:00:39 -0700 Reverted r179962 in r248885 for Bug 200493 and Bug 200563. Reopened. 1611344 13 fujii 2020-01-27 02:35:36 -0800 Chrome has Software rendering list and Driver bug list. https://chromium.googlesource.com/chromium/src/+/refs/heads/master/gpu/config/gpu_driver_bug_list.json https://chromium.googlesource.com/chromium/src/+/refs/heads/master/gpu/config/software_rendering_list.json 244974 2015-01-20 01:08:24 -0800 2015-02-11 11:42:36 -0800 Patch bug-140667-20150120100823.patch text/plain 5228 peavo SW5kZXg6IFNvdXJjZS9XZWJLaXQvd2luL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2Uv V2ViS2l0L3dpbi9DaGFuZ2VMb2cJKHJldmlzaW9uIDE3ODcwMCkKKysrIFNvdXJjZS9XZWJLaXQv d2luL0NoYW5nZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDE3IEBACisyMDE1LTAxLTIw ICBwZWF2b0BvdXRsb29rLmNvbSAgPHBlYXZvQG91dGxvb2suY29tPgorCisgICAgICAgIFtXaW5D YWlyb10gQWNjZWxlcmF0ZWQgY29tcG9zaXRpbmcgc2hvdWxkIGJlIGRpc2FibGVkIHdoZW4gZ3Jh cGhpY3MgY2FyZCBkb2VzIG5vdCBzdXBwb3J0IGl0LgorICAgICAgICBodHRwczovL2J1Z3Mud2Vi 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