Irrlicht Engine

excuse any typos im using my pocket pc pda... anyway

how can i incorporate GL extentions in irrlicht and check if one is supported

so if user has ATI_EXT_EMBM or whatever use this over a shader EMBM?

Such checks are made in COpenGLExtensionHandler. Only a few checks are made public through the IVideoDriver interface, though. A proper function for all such driver specific checks is still to be defined. You can add a value to the driver feature enum to add a specific check you'd need.

but can i still use GL Extentions in Irrlicht?

The driver makes extensive use of several extensions of course. You can use extensions in your OpenGL calls as well, but you need to cope with non-existance on your own then. Irrlicht's policy is to provide higher-level functions which try to make best use of the available extensions internally. This is also the reason why no access is given to the driver-internal extension list. But if you add such a value to the video driver feature enum as described, you can easily check for this extension and use gl code which requires the extension.