From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030225 Description of problem: When drawing solid-color circles made using GL_TRIANGLE_FAN, one of the triangle segments is occasionally not drawn. It may occur in cases other than a solid-color triangle fan; I have not tested it. Version-Release number of selected component (if applicable): XFree86-4.3.0-2 How reproducible: Always Steps to Reproduce: 1. Compile and run the attached test app on a Radeon display. Actual Results: The GLUT test program repeatedly draws a solid green filled circle with a trangle fan. Intermittently, one of the triangle segments is not drawn. Expected Results: A filled, solid green circle, with no dropouts. Additional info: The problem disappears if run without DRI. The position of the dropped triangle migrates in a defined way, suggesting it may be a problem that results from the positon of the vertex or triangle in some internal buffer.
Created attachment 90874 [details] Draws a filled green circle using GLUT.
Created attachment 90875 [details] XFree86 log file
Please report this problem also upstream in XFree86's bugzilla so that the DRI project is aware of the problem: http://bugs.xfree86.org
Since this bugzilla report was filed, there have been several major updates to the X Window System, which may resolve this issue. We encourage you to upgrade to the latest version of Fedora Core (http://fedora.redhat.com). If this issue turns out to still be reproduceable in the latest version of Fedora Core, please file a bug report in the X.Org bugzilla located at http://bugs.freedesktop.org in the "dri" component. Once you've filed your bug report to X.Org, if you paste the new bug URL here, Red Hat will continue to track the issue in the centralized X.Org bug tracker, and will review any bug fixes that become available for consideration in future updates.