There's a much greater degree of difference between the PC and Xbox 360 versions, which we also have covered off in a separate comparison video. Regardless, this should be a very good test for comparison against MLAA - see what you think. It's not always true though, so it can actually be worse in practice than regular 8x Quality AA. Basically, it should result in eight extra pixel shadings on the edge, but the extra coverage samples supposedly result in better colour results. 16x Q CSAA should be eight multi-samples with eight extra coverage samples. It's interesting in that you can compare MLAA up against the 16x Q CSAA setting we used when capturing the PC version. Here's how Portal 2 shapes up on PC compared to the PS3 version of the game. Valve has always concentrated on making its games really playable on a vast range of PC hardware, and even max settings shouldn't stress any one running a PC with a decent dual core CPU and an entry-level enthusiast graphics card. Those PS3 owners who do redeem their Portal 2 code for PC or Mac will find that even with relatively meagre system specs, the Source engine really performs beautifully. Another factor to weigh into the discussion is that while Portal 2's co-op play works rather well cross-platform, in a great many other applications, the ability for computer owners to use faster and more intuitive control systems such as the classic keyboard and mouse combo may well upset game balance.
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