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chromium / chromium / src / def35bdec8693a69e96d2476f9ea9cb3513ccbb7
commitdef35bdec8693a69e96d2476f9ea9cb3513ccbb7[log] [tgz]
authorXianzhu Wang <wangxianzhu@chromium.org>Wed Jul 27 21:12:56 2022
committerChromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Jul 27 21:12:56 2022
tree53bbea1fb5f7ebd730b09bd5ebc61ea46104e86b
parent90a28321c5b7a79e6f9c9dc039beec6adcd4d189 [diff]
Paint non-overlay overflow controls before scrolling background

This is behind RuntimeEnabledFeatures::ScrollUpdateOptimizationsEnabled.

Original paint order:
  chunk non-scrolling-background
  chunk scrolling-background
  chunk non-overlay overflow controls
  chunk scrolling contents

Now:
  chunk non-scrolling-background
  chunk non-overlay overflow controls
  chunk scrolling-background and scrolling contents

Benefits:
1. fewer paint chunks
2. no unnecessary overlap testing with overflow controls for
   scrolling contents when being tried to merge into the scrolling
   background.

Bug: 1056884
Change-Id: If438e96ef4567b626baa9b72b6e27828664190da
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3785237
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Reviewed-by: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1028913}
6 files changed
tree: 53bbea1fb5f7ebd730b09bd5ebc61ea46104e86b
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. build/
  6. build_overrides/
  7. buildtools/
  8. cc/
  9. chrome/
  10. chromecast/
  11. chromeos/
  12. codelabs/
  13. components/
  14. content/
  15. courgette/
  16. crypto/
  17. dbus/
  18. device/
  19. docs/
  20. extensions/
  21. fuchsia_web/
  22. gin/
  23. google_apis/
  24. google_update/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. media/
  31. mojo/
  32. native_client_sdk/
  33. net/
  34. pdf/
  35. ppapi/
  36. printing/
  37. remoting/
  38. rlz/
  39. sandbox/
  40. services/
  41. skia/
  42. sql/
  43. storage/
  44. styleguide/
  45. testing/
  46. third_party/
  47. tools/
  48. ui/
  49. url/
  50. weblayer/
  51. .clang-format
  52. .clang-tidy
  53. .eslintrc.js
  54. .git-blame-ignore-revs
  55. .gitattributes
  56. .gitignore
  57. .gn
  58. .mailmap
  59. .rustfmt.toml
  60. .vpython
  61. .vpython3
  62. .yapfignore
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. ENG_REVIEW_OWNERS
  70. LICENSE
  71. LICENSE.chromium_os
  72. OWNERS
  73. PRESUBMIT.py
  74. PRESUBMIT_test.py
  75. PRESUBMIT_test_mocks.py
  76. README.md
  77. WATCHLISTS
README.md

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