https://bugs.freedesktop.org/show_bug.cgi?id=31810 Summary: r600g: Sampling from an alpha texture in a fragment shader Product: Mesa Version: git Platform: Other OS/Version: All Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@xxxxxxxxxxxxxxxxxxxxx ReportedBy: otaylor@xxxxxxxxxx Created an attachment (id=40447) --> (https://bugs.freedesktop.org/attachment.cgi?id=40447) piglit patch described The attach piglit addition works on g600c and softpipe fails on r600g. (The test is close to minimal, but not having diagnosed the bug I don't know if "sampling from an alpha texture" is the fundamental thing that needs to be tested or not... or there could even be failing piglit tests elsewhere that are showing the same problem.) The TGSI looks right: DCL IN[0], COLOR, LINEAR DCL IN[1], GENERIC[0], PERSPECTIVE DCL OUT[0], COLOR DCL SAMP[0] DCL TEMP[0] 0: TEX TEMP[0], IN[1], SAMP[0], 2D 1: MUL OUT[0], IN[0], TEMP[0].wwww 2: END VERT Despite spending a lot of time fooling around this yesterday and checking what I thought were the obvious things I really have no idea what is going on; hopefully it will be obvious for someone more familiar with the R700 shader code. -- 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
