Put this way it is very hard to ignore this argument. The worry is of course is can ATI's card push through all of the things that the various single-application shaders do on their own. This is yet to be seen but we will come to this point a bit later.
ATI say that this will mean that they can fully load up all shader pipelines with all of the data without waiting for each separate unit to do their own thing. This means both Vertex shading and Pixel shading going through these multi-purpose units.Pixels and Geometry
According to ATI, upcoming games are going to be both Geometry and Pixel compute intensive. This means that things like HDR, depth of field and motion blur will increase dramatically. We are already seeing this with the Tech demo's from Valve for Day of Defeat: Source and the gorgeous looking Crisis with its realistic depth of field will be able to be computed on the GPU. This frees up the CPU and also gives the GPU extra tasks that it can theoretically do.
This is things like processing Physics (I'll get to that later), Morphing, Sorting Image post-processing and lots of other things. Potentially DX10 and Unified
Shader will mean that developers can use the general purpose CPU to compute AI and other things that have sometimes been lacking in modern games.
Will this mean that post-processing will get even better?
Read on for more...