| commit | bdfa9a0b9a8f7e5704d479d957fe25d675aea4be | [log] [tgz] |
|---|---|---|
| author | yiyix <[email protected]> | Mon Oct 23 22:21:47 2017 |
| committer | Commit Bot <[email protected]> | Mon Oct 23 22:21:47 2017 |
| tree | 090a822b55855c3bbe40caeb62e568d4bd47a105 | |
| parent | 811a22daf54436486f198c806f1eab4ae0b3a2fc [diff] [blame] |
Optimize overdraw on partially overlapped windows Overdraw means that one single pixel is drawn more than once, this can slow down our chrome browser performance; and this causes our browser to use more power to run. In this patch, a new draw occlusion tracker to remove DrawQuads that are not shown on the screen from the CompositorFrame is added. For detailed description: https://docs.google.com/document/d/1skSwTc7fDr_O_pYz1mH4hV7QtMkzAOhhKf5Qr4FQx2I/edit TEST=display_unittest.cc Bug: 672929 Change-Id: I910597230c432450eabbef8166cab2cb9d3925ac Reviewed-on: https://chromium-review.googlesource.com/711391 Commit-Queue: Yi Xu <[email protected]> Reviewed-by: Scott Violet <[email protected]> Reviewed-by: Ilya Sherman <[email protected]> Reviewed-by: danakj <[email protected]> Cr-Commit-Position: refs/heads/master@{#510942}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc index 29b9b49..65bb733 100644 --- a/chrome/browser/flag_descriptions.cc +++ b/chrome/browser/flag_descriptions.cc
@@ -1203,6 +1203,11 @@ "Visualize overdraw by color-coding elements based on if they have other " "elements drawn underneath."; +const char kEnableDrawOcclusionName[] = "Enable draw occlusion"; +const char kEnableDrawOcclusionDescription[] = + "Enable the system to use draw occlusion to skip draw quads when they are " + "not shown on the screen."; + const char kShowSavedCopyName[] = "Show Saved Copy Button"; const char kShowSavedCopyDescription[] = "When a page fails to load, if a stale copy of the page exists in the "