55259 2011-02-25 14:02:06 -0800 [chromium] Abstract "pixels with a graphics context" into its own class 2011-03-01 18:35:56 -0800 1 1 1 Unclassified WebKit WebCore Misc. 528+ (Nightly build) All All RESOLVED FIXED P2 Normal --- 55388 1 enne enne antonm aroben enne jamesr kbr nduca vangelis oldest_to_newest 358171 0 enne 2011-02-25 14:02:06 -0800 [chromium] Abstract "pixels with a graphics context" into its own class 358272 1 83900 enne 2011-02-25 16:34:30 -0800 Created attachment 83900 Patch 358275 2 enne 2011-02-25 16:39:35 -0800 This refactoring patch is working towards tiling layers. Along with the obvious abstraction of the Skia/Cg logic, it splits out the update/draw logic from the LayerTilerChromium.cpp into separate functions. Having PlatformCanvas and PlatformImage be its own class will make it much easier to merge the common logic of LayerTilerChromium, ContentLayerChromium, and ImageLayerChromium. 358300 3 83900 jamesr 2011-02-25 17:24:24 -0800 Comment on attachment 83900 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=83900&action=review Looks awesome! Usual sort of collection of nitpicks > Source/WebCore/platform/graphics/chromium/PlatformCanvas.cpp:2 > + * Copyright (C) 2010 Google Inc. All rights reserved. times they are a'changing. 2011 :) > Source/WebCore/platform/graphics/chromium/PlatformCanvas.h:32 > +#if USE(SKIA) > +namespace skia { class PlatformCanvas; } > +class SkBitmap; > +#endif nit: move this after the #includes > Source/WebCore/platform/graphics/chromium/PlatformCanvas.h:64 > + AutoLocker(PlatformCanvas*); nit: explicit > Source/WebCore/platform/graphics/chromium/PlatformCanvas.h:80 > + Painter(PlatformCanvas*); nit: explicit 359134 4 enne 2011-02-28 10:03:39 -0800 Committed r79877: <http://trac.webkit.org/changeset/79877> 359135 5 aroben 2011-02-28 10:04:48 -0800 (In reply to comment #0) > [chromium] Abstract "pixels with a graphics context" into its own class Isn't that what ImageBuffer is? 359157 6 antonm 2011-02-28 10:34:25 -0800 Sample broken build log: http://chromesshgw.corp.google.com/i/chromium.webkit/builders/Webkit%20Win%20Builder/builds/4114/steps/compile/logs/stdio Grep for PlatformCanvas.h 359178 7 jamesr 2011-02-28 11:05:17 -0800 Windows has no idea what uint8_t is, apparently. 359317 8 enne 2011-02-28 13:53:51 -0800 (In reply to comment #6) > Sample broken build log: http://chromesshgw.corp.google.com/i/chromium.webkit/builders/Webkit%20Win%20Builder/builds/4114/steps/compile/logs/stdio > > Grep for PlatformCanvas.h Thanks for rolling that out for me. It's unfortunate that the win build check above didn't catch that. (In reply to comment #5) > (In reply to comment #0) > > [chromium] Abstract "pixels with a graphics context" into its own class > > Isn't that what ImageBuffer is? Thanks for pointing this out. I need to look into it more closely at it to see if it solves the same needs. At the very least, using ImageBuffer as-is would involve an extra pixel-by-pixel copy operation for every texture upload, so it will need some additional APIs first. 359487 9 jamesr 2011-02-28 16:46:27 -0800 (In reply to comment #8) > (In reply to comment #6) > > Sample broken build log: http://chromesshgw.corp.google.com/i/chromium.webkit/builders/Webkit%20Win%20Builder/builds/4114/steps/compile/logs/stdio > > > > Grep for PlatformCanvas.h > > Thanks for rolling that out for me. It's unfortunate that the win build check above didn't catch that. We have a win EWS bot but no chromium-win EWS :'( > > (In reply to comment #5) > > (In reply to comment #0) > > > [chromium] Abstract "pixels with a graphics context" into its own class > > > > Isn't that what ImageBuffer is? > > Thanks for pointing this out. I need to look into it more closely at it to see if it solves the same needs. At the very least, using ImageBuffer as-is would involve an extra pixel-by-pixel copy operation for every texture upload, so it will need some additional APIs first. Not necessarily, we can probably grab the bits out of the GraphicsContext in a platform-specific way in platform-specific code as needed. 360113 10 enne 2011-03-01 12:31:59 -0800 (In reply to comment #9) > (In reply to comment #8) > > (In reply to comment #6) > > > Sample broken build log: http://chromesshgw.corp.google.com/i/chromium.webkit/builders/Webkit%20Win%20Builder/builds/4114/steps/compile/logs/stdio > > > > > > Grep for PlatformCanvas.h > > > > Thanks for rolling that out for me. It's unfortunate that the win build check above didn't catch that. > > We have a win EWS bot but no chromium-win EWS :'( I still am not sure how stdint.h is magically included in one but not the other. > > > > (In reply to comment #5) > > > (In reply to comment #0) > > > > [chromium] Abstract "pixels with a graphics context" into its own class > > > > > > Isn't that what ImageBuffer is? > > > > Thanks for pointing this out. I need to look into it more closely at it to see if it solves the same needs. At the very least, using ImageBuffer as-is would involve an extra pixel-by-pixel copy operation for every texture upload, so it will need some additional APIs first. > > Not necessarily, we can probably grab the bits out of the GraphicsContext in a platform-specific way in platform-specific code as needed. Looking at ImageBuffer, the code I would add to to it is pretty much the contents of this patch, except I would also (likely) need to add an implementation of these APIs to all the other ImageBufferData implementations (other than Skia and Cg). I'm feeling inclined to commit this as-is because it significantly cleans up the compositor code and is just a refactoring of what already exists. It's possible that there's no real performance win from the existing code and thus no benefit to having an extra path or extra classes. However, at this point we don't really have good performance measurements of the compositor speed (and its performance characteristics will change drastically in the coming months as it becomes multithreaded). In my mind, further cleanup or potential merging with ImageBuffer should really be left for a future patch when we can evaluate it with better data. 360488 11 enne 2011-03-01 18:35:56 -0800 Committed r80081: <http://trac.webkit.org/changeset/80081> 83900 2011-02-25 16:34:30 -0800 2011-02-25 17:24:24 -0800 Patch bug-55259-20110225163429.patch text/plain 39224 enne U3VidmVyc2lvbiBSZXZpc2lvbjogNzk3MjMKZGlmZiAtLWdpdCBhL1NvdXJjZS9XZWJDb3JlL0No YW5nZUxvZyBiL1NvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwppbmRleCA3ZDkzMTVjMGVmNzY0NGE4 YmYyNGM1ZjU2MzliYmQ5ZTg2ZmViZTQzLi43NGZkYzVkYWYxOWZhZjQ4OGIxZjYxMzczZGMyNzA3 ZjVhYzMzNDU2IDEwMDY0NAotLS0gYS9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKKysrIGIvU291 cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsNTMgQEAKKzIwMTEtMDItMjUgIEFkcmll bm5lIFdhbGtlciAgPGVubmVAZ29vZ2xlLmNvbT4KKworICAgICAgICBSZXZpZXdlZCBieSBOT0JP RFkgKE9PUFMhKS4KKworICAgICAgICBbY2hyb21pdW1dIEFic3RyYWN0ICJwaXhlbHMgd2l0aCBh IGdyYXBoaWNzIGNvbnRleHQiIGludG8gaXRzIG93biBjbGFzcworICAgICAgICBodHRwczovL2J1 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