Perfect game graphics still decades away - Wikimedia

We have games that can emulate anything, and although they look pretty, according to software whizzes, graphics to completely support them and bring them to life are still far away. 

That's according to Epic Games' Tim Sweeney who gave some insight into why. Speaking at the games developers tradeshow, Dice 2012, computer graphics expert told his audience that we'll never reach graphics and realism we're completely happy with. 

According to Sweeny, the problem lies in the eyes. He was quoted by PC Perspective as saying the human eye has around 120 million monochrome receptors and 5M colour. Our peepers are also said to have a resolution of about 30 megapixels as well as being able to gather around 72 frames per second. 

This, according to Sweeny is why avid gamers often question the need for frame rates higher than 70 in games.

Sweeny said the maximum required resolution for the human eye to reach its full PC visual gaming potential "in visual fidelity" is 2560x1600 with a 30 degree field of view. This rises to 8000x4000 with a 90 degree FOV.  

You could compare the 2560x1600 resolution to what is shown on a 30 inch LCD panel. The 8000x4000 resolutions, on the other hand, are said to be around 16x of that currently found in HDTVs. 

The Nyquist theorem says that we'll need around 40 billion triangles per second to reach something we're completely happy with in games graphics at the 8000x4000 resolution. However, the fastest GPU for triangle processing can only handle 2.8 billion per second and the industry will need at least two more generations of work to reach this.