https://bugs.winehq.org/show_bug.cgi?id=53671
--- Comment #10 from Stefan Dösinger stefan@codeweavers.com --- Created attachment 73763 --> https://bugs.winehq.org/attachment.cgi?id=73763 More checkGLcalls for testing
Here is a patch to further pin down where the driver complains.
GL errors persist until they are retrieved with glGetError, so the error you are seeing might be from an older call. This patch adds a few more checkGLcall invocations that will tell us if this is the case.