Originally Posted by
rusty
Something tells me that you're a hardcore PC man :)
Yeah, texture pop-in after the game is loaded makes sense - mega-texture is like a big persistent cache, where you only load new texture into it as needed in order to minimize memory use.
But at startup, all of the visible textures need to be loaded - so you'll get MIP pop-in if the card doesn't have enough mem bandwidth (the engine could be throttling this as well). The sensible way to do this sort of thing is to load in the lower MIP-levels first, to take into account for slower cards. In the case of Nvidia, I still suspect that the drivers are doing something nasty such as not using the highest MIP level for textures when rendering (even if it's in the mega texture).