On Fri, May 12, 2017 at 03:56:26PM +0200, Samuel Pitoiset wrote: > > > On 05/12/2017 03:39 PM, John Brooks wrote: > >Since release, Dying Light and Dead Island Definitive Edition have been > >broken > >on Mesa, producing at best only a black screen after loading. I found that > >the > >root of the problem is that their vertex shaders redeclare the GLSL builtin > >gl_VertexID, which Mesa's compiler considers to be an error: > > > > error: `gl_VertexID' redeclared > > > >These patches make the compiler more lenient so that the shaders compile. > >Because such redeclarations are not explicitly valid in the spec, this > >behaviour is selectively activated by the new > >allow_glsl_builtin_redeclaration > >driconf option, which has been enabled for both games in the default drirc. > > > >With this change, both games work on Mesa and render correctly. Note that the > >games require OpenGL 4.4+, and so it is necessary to launch them with > >MESA_GL_VERSION_OVERRIDE and MESA_GLSL_VERSION_OVERRIDE set to OpenGL 4.4 > >(GLSL > >440) or higher. > > > >Contrary to popular belief, this problem actually had nothing whatsoever to > >do > >with compatibility profiles. Forcing Mesa to create a higher version > >compatibility profile with MESA_GL_VERSION_OVERRIDE=4.5COMPAT or > >allow_higher_compat_version results in graphical glitches, so don't use that. > > I wonder if there is multiple versions of Dying Light, but using > MESA_GL_VERSION_OVERRIDE=4.4 and MESA_GLSL_VERSION_OVERRIDE=440 doesn't work > for me (game crash at launching). Also it requests some unsupported GL > functions (compat?). > > IIRC, Dying Light wants a GL 4.4 compat profile, I guess Timothy can > confirm? > > What's your steam app ID? > > Btw, you probably don't need to override the GL/GLSL versions, it should be > backward compatible. >
Steam App ID 239140. The use of legacy functions (such as glBegin) in frame 0 is SDL's doing: <https://github.com/spurious/SDL-mirror/blob/master/src/render/opengl/SDL_render_gl.c#L1334> I don't know why your game would crash on launch. My first thought would be steam runtime issues though. Make sure Steam runtime is enabled and remove ~/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libstdc++.so.6 The version override is necessary since the game will not render at all with a 3.0 compat profile, which is what it gets without an override. -- John Brooks Frogging101 on IRC and elsewhere _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
