On 10/04/2010 04:17 AM, David Gowers (kampu) wrote: > Try making a flat region of color #2a7e23, selecting Pencil tool, > choosing Color mode and a large brush, and painting #11e500 repeatedly > over the same area. > [...] > In general, you can manifest this bug by picking a dark color, > making a region of it, and painting over with a HSV value-increased > version of same color. > Ideally, this would possibly change Hue or Chromaticity, but shouldn't > change Lightness significantly. Looking at the LCH color selector, L > rises ~2 points for each paint application in my example. Unfortunately, that's not fixable but a result of the too small gamut of the sRGB working space. Combining the lightness of #2a7e23 with hue/saturation of #11e500 results in (linear) sRGB values which are negative for red and blue. Clipping those to 0-255 yields the result you observed (the color becomes lighter than it should be). Whenever you observe this misbehavior, at least one of the resulting RGB components should be at 0 or 255 -- otherwise it really would be a bug. The only fix is to use a larger working space, like scRGB. Regards Rupert _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
