http://bugs.winehq.org/show_bug.cgi?id=8371
------- Additional Comments From stefandoesinger@gmx.at 2007-21-05 04:42 ------- I guess that Yukon uses auxilliary buffers for its work. Since my patch wined3d uses them on its own, overwriting Yukons buffer. You can try to play with the offscreen rendering registry key to make wined3d use pbuffers or fbos. Maybe there is some configuration option to change which buffers yukon is using. Wined3d uses GL_AUX0 and GL_AUX1.