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| author | mazda@chromium.org <mazda@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-03-15 09:29:36 +0000 |
|---|---|---|
| committer | mazda@chromium.org <mazda@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-03-15 09:29:36 +0000 |
| commit | ca2fd075cf4eaeb2ee650affff606bbb3120772c (patch) | |
| tree | 4cb40434aa433d9e30bba39e103b4ec8b59c4f59 /chrome/browser/tab_contents | |
| parent | 0c652b8e854aad1f44751449e7029f432f4502fe (diff) | |
| download | chromium_src-ca2fd075cf4eaeb2ee650affff606bbb3120772c.zip chromium_src-ca2fd075cf4eaeb2ee650affff606bbb3120772c.tar.gz chromium_src-ca2fd075cf4eaeb2ee650affff606bbb3120772c.tar.bz2 | |
Support browser side thumbnailing for GPU-composited pages on Windows.
Benchmark results of copying a 1280 x 800 pixels using CopyFromCompositingSurface or CopyFromBackingSurface are as follows.
FromCompositingSurface: 40.00 ms
FromBackingStore: 2.12 ms
I'm prepareing the following CLs and these will come soon,
- Support Mac and Chrome OS (Aura)
- Reduce the number of pixels to copy from the compositing surface for performance improvement
BUG=96351
TEST=Manual
Review URL: http://codereview.chromium.org/9582003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@126870 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'chrome/browser/tab_contents')
| -rw-r--r-- | chrome/browser/tab_contents/thumbnail_generator.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/chrome/browser/tab_contents/thumbnail_generator.cc b/chrome/browser/tab_contents/thumbnail_generator.cc index 79d8f10..398c2af 100644 --- a/chrome/browser/tab_contents/thumbnail_generator.cc +++ b/chrome/browser/tab_contents/thumbnail_generator.cc @@ -77,8 +77,9 @@ SkBitmap GetBitmapForRenderWidgetHost( // Get the bitmap as a Skia object so we can resample it. This is a large // allocation and we can tolerate failure here, so give up if the allocation // fails. + // TODO(mazda): Copy a shrinked size of image instead of the whole view size. skia::PlatformCanvas temp_canvas; - if (!render_widget_host->CopyFromBackingStore(&temp_canvas)) + if (!render_widget_host->CopyFromBackingStore(gfx::Size(), &temp_canvas)) return result; const SkBitmap& bmp_with_scrollbars = skia::GetTopDevice(temp_canvas)->accessBitmap(false); |