On Tuesday 30 August 2016, Morten Sorvig wrote: > One remaining issue (after the platform plumbing has been done) may be > that QPainter and the raster paint engine assumes a linear color space > when blending. As I understand it OpenGL solves this by converting > sRGB framebuffer values to linear color for the blending step. > I have looked into that previously. It is mainly blocked by uncertain scope, what color-spaces should be supported, and should they be tied to QImage, QScreen, QGuiApplicaiton, QColor or all of the above? I also postponed adding support for RGB64 QImage formats until I figured out how gamma-correction should be handled.
If we have a specific scope I can adjust my proto-type and suggest an implementation. Also I ran into the problem that gamma-corrected 2D anti-aliasing subjectively looks bad/wrong, probably because naive blending is closer to human perception, though it is less physically accurate (most screens gamma-curves are designed to fit human perception of brightness). Which raises the question if gamma-corrected blending is even worth the effort outside of photo realistic looking 3D rendering. `Allan _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
