201862 2019-09-16 22:57:56 -0700 [FTW] Correct ImageBufferData and clear operations 2019-09-18 21:54:29 -0700 1 1 1 Unclassified WebKit WebCore Misc. WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 bfulgham bfulgham achristensen bfulgham commit-queue don.olmstead fujii webkit-bug-importer oldest_to_newest 1571437 0 bfulgham 2019-09-16 22:57:56 -0700 The implementation of ImageBufferDataDirect2D did not properly handle the case of a 'getData' request for less than the size of the full bitmap. The implementation of 'Clear' was not correct when the size of the region to be cleared is less than the size of the render target. This patch corrects both problems. 1571438 1 378941 bfulgham 2019-09-16 23:04:44 -0700 Created attachment 378941 Patch 1571476 2 378941 fujii 2019-09-17 01:25:58 -0700 Comment on attachment 378941 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=378941&action=review > Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:122 > + HRESULT hr = d2dDeviceContext->CreateBitmap(rect.size(), nullptr, bytesPerRowInData, bitmapProperties2, &cpuBitmap); If you copy only the desired rect instead of whole rect, you need to keep the previous rect and check it with current rect. https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp?rev=249839#L113 - if (bitmapBufferSync == BitmapBufferSync::BufferOutOfSync || data.size() != numBytes.unsafeGet()) { + if (bitmapBufferSync == BitmapBufferSync::BufferOutOfSync || rect != m_savedRect) { Checking only data size is not sufficient because 2x3 == 3x2. I don't think it is no so bad idea copying the whole buffer every time. 1571507 3 378941 fujii 2019-09-17 05:31:13 -0700 Comment on attachment 378941 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=378941&action=review >> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:122 >> + HRESULT hr = d2dDeviceContext->CreateBitmap(rect.size(), nullptr, bytesPerRowInData, bitmapProperties2, &cpuBitmap); > > If you copy only the desired rect instead of whole rect, you need to keep the previous rect and check it with current rect. > https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp?rev=249839#L113 > - if (bitmapBufferSync == BitmapBufferSync::BufferOutOfSync || data.size() != numBytes.unsafeGet()) { > + if (bitmapBufferSync == BitmapBufferSync::BufferOutOfSync || rect != m_savedRect) { > > Checking only data size is not sufficient because 2x3 == 3x2. > I don't think it is no so bad idea copying the whole buffer every time. Remove the variable size if it becomes unused. 1571513 4 378941 fujii 2019-09-17 06:22:19 -0700 Comment on attachment 378941 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=378941&action=review >>> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:122 >>> + HRESULT hr = d2dDeviceContext->CreateBitmap(rect.size(), nullptr, bytesPerRowInData, bitmapProperties2, &cpuBitmap); >> >> If you copy only the desired rect instead of whole rect, you need to keep the previous rect and check it with current rect. >> https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp?rev=249839#L113 >> - if (bitmapBufferSync == BitmapBufferSync::BufferOutOfSync || data.size() != numBytes.unsafeGet()) { >> + if (bitmapBufferSync == BitmapBufferSync::BufferOutOfSync || rect != m_savedRect) { >> >> Checking only data size is not sufficient because 2x3 == 3x2. >> I don't think it is no so bad idea copying the whole buffer every time. > > Remove the variable size if it becomes unused. By removing BitmapBufferSync::BufferOutOfSync, the condition can be simplified: if (rect != m_savedRect) { Then, markBufferOutOfSync should be changed: https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp?rev=249839#L149 - void markBufferOutOfSync() { bitmapBufferSync = BitmapBufferSync::BufferOutOfSync; } + void markBufferOutOfSync() { m_savedRect.setSize({ }); } 1571555 5 378941 bfulgham 2019-09-17 09:08:05 -0700 Comment on attachment 378941 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=378941&action=review >>>> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:122 >>>> + HRESULT hr = d2dDeviceContext->CreateBitmap(rect.size(), nullptr, bytesPerRowInData, bitmapProperties2, &cpuBitmap); >>> >>> If you copy only the desired rect instead of whole rect, you need to keep the previous rect and check it with current rect. >>> https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp?rev=249839#L113 >>> - if (bitmapBufferSync == BitmapBufferSync::BufferOutOfSync || data.size() != numBytes.unsafeGet()) { >>> + if (bitmapBufferSync == BitmapBufferSync::BufferOutOfSync || rect != m_savedRect) { >>> >>> Checking only data size is not sufficient because 2x3 == 3x2. >>> I don't think it is no so bad idea copying the whole buffer every time. >> >> Remove the variable size if it becomes unused. > > By removing BitmapBufferSync::BufferOutOfSync, the condition can be simplified: > if (rect != m_savedRect) { > > Then, markBufferOutOfSync should be changed: > https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp?rev=249839#L149 > - void markBufferOutOfSync() { bitmapBufferSync = BitmapBufferSync::BufferOutOfSync; } > + void markBufferOutOfSync() { m_savedRect.setSize({ }); } I think your idea about the backing buffer is correct. We should maintain an in-memory version of the GPU bitmap, and always copy the entire buffer to memory, not just the bit being queried. Then, the read/write operations need to be adjusted to make sure we only read the relevant portion of the in-memory data to the ImageBuffer.getData caller, and only updated the relevant portions of the backing buffer during calls to ImageBuffer.putData. I don't think I agree with the idea to remove the sync state flags, because I am trying to avoid GPU read-backs in cases where we have not uploaded to the GPU (or modified the GPU version of the image). This is common when a chain of filter operations are performed on the memory representation of an image. 1571823 6 379021 bfulgham 2019-09-17 22:35:15 -0700 Created attachment 379021 Patch 1571829 7 379021 fujii 2019-09-17 23:43:07 -0700 Comment on attachment 379021 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=379021&action=review > Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:89 > + unsigned srcStride = sourceSize.width() * 4; width of sourceRect is not srcStride. copyRectFromSourceToDest should take sourceBufferSize. > Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:125 > + return copyRectFromSourceToDest(rect, data.data(), rect.size(), IntPoint(), result->data()); The first argument 'rect' is a desired rect, not a data canvans size. You need to pass data canvas size. > Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:272 > { ImageBufferData::putData needs to take BitmapBufferSync::BufferOutOfSync into account. In case of BitmapBufferSync::BufferOutOfSync and partial putData, putData need to call readDataFromBitmapIfNeeded before copying data. > Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:326 > + } else if (!copyRectFromSourceToData(sourceRect, source)) ImageBufferData::putData needs to convert if byteFormat doens't match with sourceFormat. 1571831 8 379021 fujii 2019-09-18 00:23:29 -0700 Comment on attachment 379021 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=379021&action=review > Source/WebCore/ChangeLog:16 > + This patch corrects all three problems. DRT and WKTR patches aren't landed yet. Please lant them if you have. > Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:106 > + } Use memcpy. Call memcpy sourceSize.height() times. 1571832 9 379021 fujii 2019-09-18 00:32:00 -0700 Comment on attachment 379021 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=379021&action=review > Source/WebCore/platform/graphics/win/Direct2DOperations.cpp:1172 > + save(platformContext); I think this is very bad. This ends up to stack mismatch. If you need at least one render state should be pushed, You should push a render state in PlatformContextDirect2D ctor. 1572036 10 379021 bfulgham 2019-09-18 12:52:38 -0700 Comment on attachment 379021 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=379021&action=review >> Source/WebCore/ChangeLog:16 >> + This patch corrects all three problems. > > DRT and WKTR patches aren't landed yet. > Please lant them if you have. These don't exist yet. I've been running tests manually (in MiniBrowser). >> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:89 >> + unsigned srcStride = sourceSize.width() * 4; > > width of sourceRect is not srcStride. copyRectFromSourceToDest should take sourceBufferSize. Fixed. >> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:106 >> + } > > Use memcpy. Call memcpy sourceSize.height() times. Will do. >> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:125 >> + return copyRectFromSourceToDest(rect, data.data(), rect.size(), IntPoint(), result->data()); > > The first argument 'rect' is a desired rect, not a data canvans size. You need to pass data canvas size. Fixed. >> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:272 >> { > > ImageBufferData::putData needs to take BitmapBufferSync::BufferOutOfSync into account. > In case of BitmapBufferSync::BufferOutOfSync and partial putData, putData need to call readDataFromBitmapIfNeeded before copying data. Oh! Good point. >> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:326 >> + } else if (!copyRectFromSourceToData(sourceRect, source)) > > ImageBufferData::putData needs to convert if byteFormat doens't match with sourceFormat. Will fix. 1572040 11 379062 bfulgham 2019-09-18 13:03:13 -0700 Created attachment 379062 Patch 1572159 12 379087 bfulgham 2019-09-18 17:01:59 -0700 Created attachment 379087 Patch 1572160 13 bfulgham 2019-09-18 17:02:40 -0700 (In reply to Fujii Hironori from comment #9) > Comment on attachment 379021 [details] > Patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=379021&action=review > > > Source/WebCore/platform/graphics/win/Direct2DOperations.cpp:1172 > > + save(platformContext); > > I think this is very bad. This ends up to stack mismatch. > If you need at least one render state should be pushed, You should push a > render state in PlatformContextDirect2D ctor. Sorry -- I forgot to address this. I've removed this from the patch, and uploaded it. I added some assertions to save/restore to help identify where these might get out of sync. 1572213 14 379087 fujii 2019-09-18 19:47:28 -0700 Comment on attachment 379087 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=379087&action=review > Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:84 > + if (sourceRect.width() > destBufferSize.width() || sourceRect.height() > destBufferSize.height()) This is not a right condition. It should be: sourceRect.maxX() + destBufferPosition.x() > destBufferSize.width() However, I think it's easy to understand to use IntRect::contains. if (!IntRect({ }, destBufferSize).contains(IntRect(destBufferPosition, sourceRect.size()))) return false; if (!IntRect({ }, sourceBufferSize).contains(sourceRect)) return false; > Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:113 > + if (sourceRect.width() > destBufferSize.width() || sourceRect.height() > destBufferSize.height()) Ditto > Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:431 > + copyRectFromSourceToDestAndSetPremultiplication<AlphaPremultiplication::Premultiplied>(sourceRect, sourceRect.size(), source.data(), backingStoreSize, data.data(), destBufferPosition); You specify sourceFormat instead of desiredFormat for the template argument. 1572227 15 379087 bfulgham 2019-09-18 20:38:59 -0700 Comment on attachment 379087 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=379087&action=review >> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:84 >> + if (sourceRect.width() > destBufferSize.width() || sourceRect.height() > destBufferSize.height()) > > This is not a right condition. It should be: > sourceRect.maxX() + destBufferPosition.x() > destBufferSize.width() > > However, I think it's easy to understand to use IntRect::contains. > > if (!IntRect({ }, destBufferSize).contains(IntRect(destBufferPosition, sourceRect.size()))) > return false; > if (!IntRect({ }, sourceBufferSize).contains(sourceRect)) > return false; Yes, this looks better. Done! >> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:113 >> + if (sourceRect.width() > destBufferSize.width() || sourceRect.height() > destBufferSize.height()) > > Ditto Okay. Also: I wish there was an easy way to consolidate these two templates. >> Source/WebCore/platform/graphics/win/ImageBufferDataDirect2D.cpp:431 >> + copyRectFromSourceToDestAndSetPremultiplication<AlphaPremultiplication::Premultiplied>(sourceRect, sourceRect.size(), source.data(), backingStoreSize, data.data(), destBufferPosition); > > You specify sourceFormat instead of desiredFormat for the template argument. Oh, no! I mixed these two up. I'll fix. 1572233 16 379100 bfulgham 2019-09-18 20:58:36 -0700 Created attachment 379100 Patch 1572249 17 379100 fujii 2019-09-18 21:20:05 -0700 Comment on attachment 379100 Patch Looks good to me. There is a question in my mind. Converting strait alpha to premultiplied alpha is no problem, but lossy. However, Converting premultiplied alpha to strait alpha make me feel bad because it is lossy. But, it seems that Cairo port is also doing premultiplied alpha → strait alpha conversion. 1572257 18 379100 commit-queue 2019-09-18 21:53:56 -0700 Comment on attachment 379100 Patch Clearing flags on attachment: 379100 Committed r250085: <https://trac.webkit.org/changeset/250085> 1572258 19 commit-queue 2019-09-18 21:53:57 -0700 All reviewed patches have been landed. Closing bug. 1572259 20 webkit-bug-importer 2019-09-18 21:54:29 -0700 <rdar://problem/55506453> 378941 2019-09-16 23:04:44 -0700 2019-09-17 22:35:14 -0700 Patch bug-201862-20190916230439.patch text/plain 4754 bfulgham SW5kZXg6IFNvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2UvV2Vi Q29yZS9DaGFuZ2VMb2cJKHJldmlzaW9uIDI0OTk0MSkKKysrIFNvdXJjZS9XZWJDb3JlL0NoYW5n ZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDMwIEBACisyMDE5LTA5LTE2ICBCcmVudCBG dWxnaGFtICA8YmZ1bGdoYW1AYXBwbGUuY29tPgorCisgICAgICAgIFtGVFddIENvcnJlY3QgSW1h Z2VCdWZmZXJEYXRhIGFuZCBjbGVhciBvcGVyYXRpb25zCisgICAgICAgIGh0dHBzOi8vYnVncy53 ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0yMDE4NjIKKworICAgICAgICBSZXZpZXdlZCBieSBO T0JPRFkgKE9PUFMhKS4KKworICAgICAgICBUaGlzIHBhdGNoIGNvcnJlY3RzIHNldmVyYWwgcHJv YmxlbXMgaW4gdGhlIGNhbnZhcyBpbXBsZW1lbnRhdGlvbjoKKyAgICAgICAgMS4gVGhlIGltcGxl bWVudGF0aW9uIG9mIEltYWdlQnVmZmVyRGF0YURpcmVjdDJEIGRpZCBub3QgcHJvcGVybHkgaGFu 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