https://bugs.freedesktop.org/show_bug.cgi?id=25871 --- Comment #11 from Andreas Boll <andreas.boll.dev@xxxxxxxxx> 2012-09-12 13:56:46 UTC --- (In reply to comment #10) > > It's so long ago I don't remember the exact details. You can easily figure it > out though. The test program creates a 4x4 checker board texture and then uses > a single point on it to draw the triangles. The range [0.25,0.5[ should all be > the same color. The bug was that as you approached 0.5, it started sampling the > next pixel prematurely. > > So change the fragment program to use coordinate 0.4 or something like that. > That colour should be the same as 0.4999... . Looking at the code, white seems > to be the correct colour. Ok I've got it. With coordinate 0.4 I get a white color and with 0.4999 I get black. Additionally I checked the other end of the range: Between the range [0.2480468676,0.498046860099] the color is white. If I change the fragment program to use coordinate 0.2480468675 then the color is black. With 0.4980468601 I get also black. So the issue persists in git mesa master 9.1-devel (git-e81ee67) -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
