A couple weeks ago I told Dave Airlie that I was working on a giant pile UBO tests. This is not that work, but it is most of the changes to get ready for that work. The first three patches were written quite some time ago while fixing bugs in Mesa's UBO code. The remainder were developed while working on my UBO test generator script.
The test generator script effort has been slowed by many bugs in various UBO implementations. I have recently submitted several Mesa bugs (listed below) that were discovered by this work. https://bugs.freedesktop.org/show_bug.cgi?id=83468 https://bugs.freedesktop.org/show_bug.cgi?id=83506 https://bugs.freedesktop.org/show_bug.cgi?id=83508 https://bugs.freedesktop.org/show_bug.cgi?id=83533 I have also found numerous issues in NVIDIA's closed source driver: - Global layout qualifiers are ignored. layout(row_major) uniform; uniform U { mat4 m; }; // m will be column-major - Layout qualifiers on structures are ignored. struct S { mat4 m; }; uniform U { layout(row_major) S s; }; // s.m will be column-major - Small structures are not padded to vec4-size. See patch #8. It seems like there was a 4th bug, but I can't remember what it was. As a result, I don't have access to a correct implementation to verify my script... which generates random tests. I have to scrutinize each failing test that is generated to determine whether the script or driver is at fault. Anyway... should get something out RSN. _______________________________________________ Piglit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/piglit
