Created attachment 53275 [details] attribute0-fixed-function-vertex.c I test some OpenGL API on its shader language, find it failed when it want to use the attribute 0 when there is no vertex shader. This fails both with mesa core driver. Attach a test case to reproduce it. You can run it using piglit.
-- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/969.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.