On Sun, 7 Dec 2008, Stefan Dösinger wrote: >> 1. How much of the ATI trouble can be attributed to Wine, how much to >> the fglrx driver? ... > Probably 50-50. ... Thanks for the detailed information! Will try to summarize that for the FAQ. ATI trying to fix fglrx for Wine sounds very good. Concerning the bugs I observed (with Radeon HD 3850 and fglrx 8.11): 1. Prince of Persia SoT run with WINEDEBUG=+warn and minimum graphics settings gives [---] fixme:d3d9:Direct3DShaderValidatorCreate9 stub fixme:d3d_shader:print_glsl_info_log Error received from GLSL shader #31: "Fragment shader was successfully compiled to run on hardware.\nWARNING: 0:2: extension 'GL_ARB_draw_buffers' is not supporte" fixme:d3d_shader:print_glsl_info_log Error received from GLSL shader #29: "Fragment shader(s) linked, vertex shader(s) linked. \nWARNING: 0:2: extension 'GL_ARB_draw_buffers' is not supported " [---] . The graphics error is difficult to describe; many misplaced offscreen vertices is the best description I can come up with (can take screenshots/video though if it helps). In the meantime I also found http://bugs.winehq.org/show_bug.cgi?id=7411 which looks like pretty much the same issue (see comment #8). 2. Supreme Commander supports shader model 2.0. Don't know if it uses 3.0 features if present. Everything's fine until ingame; then, the engine seems to switch between the loading screen and a black screen. Same fixme messages as in PoP. Can I help in some way? Trying patches, running other tests or games (e.g., Bioshock as a shader 3.0 game)? Is there some git branch worth trying out? Regards