193039 2018-12-26 12:08:59 -0800 Standardize rounding of percentage rgb() alpha values 2022-10-03 12:08:12 -0700 1 1 1 Unclassified WebKit CSS WebKit Nightly Build Unspecified Unspecified RESOLVED CONFIGURATION CHANGED https://bugs.webkit.org/show_bug.cgi?id=192321 https://bugs.webkit.org/show_bug.cgi?id=193038 P2 Normal --- 1 simon.fraser webkit-unassigned ahmad.saleem792 ap simon.fraser zalan oldest_to_newest 1490826 0 simon.fraser 2018-12-26 12:08:59 -0800 We have: alphaComponent = static_cast<int>(clampTo<double>(alpha, 0.0, 1.0) * nextafter(256.0, 0.0)); Blink has: // W3 standard stipulates a 2.55 alpha value multiplication factor. int alpha_component = static_cast<int>(lround(clampTo<double>(alpha, 0.0, 1.0) * 255.0)); 1902495 1 ahmad.saleem792 2022-09-30 15:31:03 -0700 @Simon - I am only able to find four references to "alphaComponent" in Webkit GitHub, while noticed that these clean-up patches landed in Webkit in 2020: https://github.com/WebKit/WebKit/commit/1a972b5062db8b61e5217bd35986f8dbdd36b75e https://github.com/WebKit/WebKit/commit/65cd1e76a0bd628e1cd2109a0dd8bb7d9000b86c https://github.com/WebKit/WebKit/commit/76dea7243010f7a3aada8d7f42ad336d6ca153ba https://github.com/WebKit/WebKit/commit/1cf4a24fb0220174c7db4d6e5e3b245cc86e8f07 Do we need to do something more here? If it has been resolved, can we mark this and "See Also" related bug as "RESOLVED CONFIGURATION CHANGED"? Thanks! 1902902 2 simon.fraser 2022-10-03 12:08:12 -0700 I believe this has been resolved.