In order to make the game run on Mac OS X with COG 8.1.4 a registry edit is needed (otherwise the game screen is just black). Save the following to a text file
[HKEY_CURRENT_USER\Software\Wine\Direct3D]
"DirectDrawRenderer"="opengl"
"VideoMemorySize"="256"
"UseGLSL"="enabled"
"OffscreenRenderingMode"="backbuffer"
"RenderTargetLockMode"="readtex"
e.g. "edit.reg" and go to the menu Programs->Run Command...
Choose the bottle you where Spellforce was installed to and enter "regedit" as command. Click "Run". In regedit choose the menu "Registry->Import Registry File..." find edit.reg and import it. Check in HKEY_CURRENT_USER\Software\Wine\Direct3D if the necessary keys are added. Start Spellforce.
In addition in the game menu you should choose Options->Video and disable shadows since this leads to graphical glitches.
There is still a texture bug regarding ground and hills, but the game runs otherwise well.
