Created attachment 112609 [details] screenshot for wrong color In macOS High Sierra 10.13.4, create new document selecting RGB/Alpha Model, 16-bit float or 32-bit float depth, with default profile, and draw something using brush. When I select some pale bluish color, for example, R=0.05 G=0.74 B=1.00, yellowish line is drawn: whereas if I choose yellowish one, R=0.86 G=1.00 B=0.05, bluish lines are drawn. When I save that canvas to tiff and show in Preview, color is correct. But when I open that tiff with Krita, color becomes wrong again.
It looks this does not happened on Windows 7 (x64). To reproduce this on Mac, create new document from menu and select Model RGB/Alpha and Depth to 16/32-bit float. If you create other RGB model in creating document and change it later to float in specific color selector tab by checking 'Show Colorspace Selector' checkbox and select Depth to float values, painted color is the same as selected one.
I suspect your mac has an AMD gpu?
Yes, my macBook Pro (Retina, 15-inch, Mid 2015) have 2 video cards: Video Card Type Bus AMD Radeon R9 M370X GPU PCIe Intel Iris Pro GPU Built-In But I show the krita window to Built-In Display: Intel Iris Pro 1536 MB
I knew nothing about this issue but with the help of gfxCardStatus tool I can observe graphic automatically switches to AMD when I invoke krita. https://gfx.io/switching.html
Iv'e seen this now as well.
Fixed in https://phabricator.kde.org/R37:893e22d135ea