Radeon HD 4000 are fit for Raytracing
TG Daily says to have learned, that all AMD graphics cards based on the R600 chip are able to calculate Raytracing.
Who connected Raytracing to Intel's Larrabee only, has to rethink. Jules World, a company that produces special effects for movies, has been working with Raytracing for quite some time. Now an interview with the CEO Jules Urbach at the AMD Cinema 2.0, revealed that all Radeons from the HD 2900 XT and upwards, are Raytracing capable.
The combination of the DX 9 API and Tessellation enables all the R600 offspring to calculate in real-time. For example all the trailers of the Transformers movie were rendered on a GPU. A HD 2900 XT gets 20 to 30 pictures per second at a resolution of 1,280x720 pixels, a HD 4870 is said not to fall below 60 fps with activated Anti Aliasing. Quite important is the amount of video memory in use - it should be 1,024 MiByte at least. Nvidia's Geforce 8800 are also compatible to the technology but a bit slower.
Jules Urbach estimates that photorealism won't be possible in 3 to 5 years but in 2008 already. If it is possible to use this Raytracing technique for games at the same time is unknown. The pictures in the gallery give an impression of what a current middle-class graphics card is capable of.
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