[Mesa-dev] [Bug 93551] Divinity: Original Sin Enhanced Edition(Native) crash on start

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93551

--- Comment #34 from Mikhail Korolev <stilriv at gmail.com> ---
(In reply to Thomas J. Moore from comment #32)
> Created attachment 125302 [details]
> Simple LD_PRELOAD shim to apply necessary patches for divos
> 
> Game works great for me with the above patches (thanks to those who figured
> this out!).  However, since they are not likely to be incorporated into
> Mesa, and patching my system Mesa just for one poorly written game is a bad
> idea, I think one of two alternate solutions needs to be provided.  My
> preference would be to patch the game binaries.  I don't really want to mess
> with that right now, though (especially since I can't easily locate where it
> does the vendor check).  The other would be to provide the patches in the
> form of an LD_PRELOAD shim.  I have attached the source code for one that
> seems to work for me.

As for vendor check location:

 [ /media/Storage/Games/GOG/Linux/DivinityOriginalSinEnhancedEdition/game ] $
GAME_DIR="/media/Storage/Games/GOG/Linux/DivinityOriginalSinEnhancedEdition"
MESA_GL_VERSION_OVERRIDE=4.2  MESA_GLSL_VERSION_OVERRIDE=420 
LD_PRELOAD="${GAME_DIR}/workaround/divos-hack-f.so" 
LD_LIBRARY_PATH="${GAME_DIR}/game" gdb -q ${GAME_DIR}/game/EoCApp
Reading symbols from
/media/Storage/Games/GOG/Linux/DivinityOriginalSinEnhancedEdition/game/EoCApp...(no
debugging symbols found)...done.
(gdb) b divos-hack-f.c:38
No symbol table is loaded.  Use the "file" command.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (divos-hack-f.c:38) pending.
(gdb) ru
Starting program:
/media/Storage/Games/GOG/Linux/DivinityOriginalSinEnhancedEdition/game/EoCApp 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7fffe4827700 (LWP 1452)]

Thread 1 "EoCApp" hit Breakpoint 1, glGetString (name=7936) at
divos-hack-f.c:38
38              return (const GLubyte *)vendor;
(gdb) bt
#0  glGetString (name=7936) at divos-hack-f.c:38
#1  0x00007ffff4624dce in api::OpenGLRenderer::OpenGLRenderer(api::IAPI*,
void*) ()
   from
/media/Storage/Games/GOG/Linux/DivinityOriginalSinEnhancedEdition/game/libOGLBinding.so
#2  0x00007ffff4623f79 in api::OpenGLAPI::CreateRenderer() () from
/media/Storage/Games/GOG/Linux/DivinityOriginalSinEnhancedEdition/game/libOGLBinding.so
#3  0x00007ffff4623b23 in api::OpenGLAPI::Init() () from
/media/Storage/Games/GOG/Linux/DivinityOriginalSinEnhancedEdition/game/libOGLBinding.so
#4  0x00007ffff44309aa in BaseApp::InitAPI() () from
/media/Storage/Games/GOG/Linux/DivinityOriginalSinEnhancedEdition/game/libGameEngine.so
#5  0x00007ffff442f578 in BaseApp::Start(ls::InitStruct*) () from
/media/Storage/Games/GOG/Linux/DivinityOriginalSinEnhancedEdition/game/libGameEngine.so
#6  0x00000000006d5160 in main ()
(gdb)

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