color: global LUT library, LUT error reporting, clamp + display fixes

- Add a global LUT library: user-configurable directories (new
  Preferences > LUT tab) scanned recursively for .cube/.3dl files; LUT
  node file pickers offer the library dirs as sidebar shortcuts via a
  'lut_library' input property handled by the param view bridge
- OCIOLutNode no longer fails silently: missing files, unsupported
  extensions and OCIO load errors are recorded in last_error() and
  surfaced in the status bar (input still passes through for rendering
  safety)
- ColorDialog: re-enable the display -> reference conversion using
  ColorProcessor::kInverse with a validity guard, and re-enable the
  Display tab in ColorValuesWidget; covered by a round-trip regression
  test proving the old OCIO inverse crash no longer occurs
- OCIOGradingTransformLinearNode: enforce the OCIO clampWhite >
  clampBlack invariant per frame in Value() so keyframed/connected
  values cannot produce invalid grading transforms, and constrain the
  white clamp UI minimum whenever the black clamp is static
- Regression tests for LUT extension checks, direction switching, node
  error reporting, LUT library scanning, display inverse round-trip and
  clamp enforcement

This commit is contained in:

Mike-Solar

2026-07-16 22:53:33 +08:00

parent ddca6a5e01

commit 547c2480e0

18 changed files with 829 additions and 33 deletions

									
										app/config/config.cpp
									
		+3
		
												View File
												
				@@ -240,6 +240,9 @@ void Config::SetDefaults()

					SetEntryInternal(QStringLiteral("FFmpegPath"), NodeValue::kText,

									 QString());

					SetEntryInternal(QStringLiteral("LUTLibraryPaths"), NodeValue::kText,

									 QString());

					SetEntryInternal(QStringLiteral("DefaultSequenceWidth"), NodeValue::kInt,

									 1920);

					SetEntryInternal(QStringLiteral("DefaultSequenceHeight"), NodeValue::kInt,