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A live gradient's dither adds a fraction of a level of noise, but gradient fill layers kept it in float. Color Dodge divides by 1 - cs, so under a bright dodge layer that sub-level noise came out as speckle several levels high, and channels at 0 were lifted off black (coloured fringes). Dithered gradient pixels are now rounded to the document depth's levels (8/16-bit; float documents unchanged), as a painted gradient stores them. Same rounding in the GPU shader. Regression tests in compose and a GPU parity case for stacked dithered gradients under Color Dodge. Claude-Session: https://claude.ai/code/session_01Qpa5z8GksXAFiDavFkmh4R Co-authored-by: Leel Wasanatha <260480244+kavishkashehan726-sudo@users.noreply.github.com> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> |
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