Hmmm... I have an old 7800 GTX at work and the triangles get clipped for sure, with the addition of extra verts, etc... In fact I had a bug related to that when we were still doing vertex based fog. You could see the fog being interpolated incorrectly across clipped triangles. But thats with XP and DX9. Dunno about Vista and DX10....
Hmmm... I have an old 7800
Hmmm... I have an old 7800 GTX at work and the triangles get clipped for sure, with the addition of extra verts, etc... In fact I had a bug related to that when we were still doing vertex based fog. You could see the fog being interpolated incorrectly across clipped triangles. But thats with XP and DX9. Dunno about Vista and DX10....