https://bugs.winehq.org/show_bug.cgi?id=52116
--- Comment #1 from Jan Sikorski jsikorski@codeweavers.com --- Created attachment 71170 --> https://bugs.winehq.org/attachment.cgi?id=71170 Proposed fix
Looks like we don't always unbind buffers after using them, so we need to make sure nothing is bound to GL_PIXEL_UNPACK_BUFFER before copying data from system memory. Attached patch should fix the issue.