HDR/Windows: SDR displays must have 80 nits

For tone mapping, I changed Windows to treat SDR displays as being 203
nits.

What I didn't think through in doing this is that SDR displays will use
HDR pixel formats, and when they do, setting the SDR white level to
203 nits will result in everything being 2.5x brighter than it should
be.

Change the logic to not override the SDR white level for non-HDR
displays. This will go back to the default value of 80. Also do not
compute the HDR max luminance for non-HDR displays.

Add a TODO to not use HDR formats on non-HDR-capable displays.

(cherry picked from commit e5fc4beff212345834786c0864e4dd1e5a59a6f2)

Bug: 1339352
Change-Id: I27107e5abd0741141caef600c75f2750009fbfae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3727149
Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Commit-Queue: ccameron chromium <ccameron@chromium.org>
Cr-Original-Commit-Position: refs/heads/main@{#1018292}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3733217
Cr-Commit-Position: refs/branch-heads/5060@{#1108}
Cr-Branched-From: b83393d0f4038aeaf67f970a024d8101df7348d1-refs/heads/main@{#1002911}
1 file changed
tree: fae88cf23d54e2d8cfe0f21aa38f60fbce6c0940
  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/
  22. fuchsia_webengine/
  23. gin/
  24. google_apis/
  25. google_update/
  26. gpu/
  27. headless/
  28. infra/
  29. ios/
  30. ipc/
  31. media/
  32. mojo/
  33. native_client_sdk/
  34. net/
  35. pdf/
  36. ppapi/
  37. printing/
  38. remoting/
  39. rlz/
  40. sandbox/
  41. services/
  42. skia/
  43. sql/
  44. storage/
  45. styleguide/
  46. testing/
  47. third_party/
  48. tools/
  49. ui/
  50. url/
  51. weblayer/
  52. .clang-format
  53. .clang-tidy
  54. .eslintrc.js
  55. .git-blame-ignore-revs
  56. .gitattributes
  57. .gitignore
  58. .gn
  59. .mailmap
  60. .rustfmt.toml
  61. .vpython
  62. .vpython3
  63. .yapfignore
  64. AUTHORS
  65. BUILD.gn
  66. CODE_OF_CONDUCT.md
  67. codereview.settings
  68. DEPS
  69. DIR_METADATA
  70. ENG_REVIEW_OWNERS
  71. LICENSE
  72. LICENSE.chromium_os
  73. OWNERS
  74. PRESUBMIT.py
  75. PRESUBMIT_test.py
  76. PRESUBMIT_test_mocks.py
  77. README.md
  78. WATCHLISTS
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