Scenegraph branch

[joevenzon]

See graphics.cpp line 034. You can set it to false to disable shaders. Line 036 should be disabling them for you, though, because I used to have a geforce 4200 and i don't think it supports fragment shaders (although it does support vertex shaders, that's not enough). Can you post the "Card supports:" and "Card does not support:" lines from the console output? This is what it looks like on a geforce 7600 (everything supported):

Card supports: drawbuf4 auxbuf4 multitexturing4 antialiasing anisotropy16 cubemapping shaders texture_rectangle depth_texture shadow