http://bugs.freedesktop.org/show_bug.cgi?id=16520
--- Comment #40 from Guillaume Melquiond <[EMAIL PROTECTED]> 2008-12-10 04:58:07 PST --- Thanks for applying the fixes. I no longer use an Intel chipset; That's why I have been silent on this issue lately. But I will make a last post to summarize what I found at that time. "When does it happen?" I have experienced the bug with WoW, both in native OpenGL mode and in emulated-by-Wine Direct3D mode. Looking at Tobias' screenshots, I'm sure that the bug he is experiencing with Max Paine is the same. I don't know about UT2004. "What is the bug?" Some triangles are overlaid with a colored gradient. The behavior is completely deterministic: It's always the same triangles in the same situations that will fail. The vertex colors depend (at least in part) on the values of the padding bytes in the vertex. I experimented that setting the padding bytes to various values forces a deterministic behavior instead of having random vertex colors. Note that my patches make part of these buggy overlays disappear since they set some of the padding bytes to zero. However, they don't erase all the padding bytes, and they only erase padding bytes inside the vertex buffer, not the ones just before or after the buffer. That may be why it didn't completely fix Max Paine. Note also that the bug only applies to a few triangles on a given scene. So there may be an additional factor for the issue to be noticeable; Perhaps it only happens when there are too many triangles to display, or only on the triangles of a given OpenGL primitive, or... "How to fix it?" Find which parts of the driver assume that uninitialized bytes in the vertex buffer are set to zero. -- Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
