NVIDIA GeForce driver 546.29 Game Ready.A touch of AO (ambient occlusion) or/and a bit of shadowing can improve the rendering… In the following screeny, the contact between Leo’s feet and the ground is not realistic. But there are still parts that lack of something to be really cool. This demo is much better than the previous tech-demo for HD 6900 series.

Hi-resolution pictures of the demo can be found here: AMD HD7900 Direct3D 11 Leo tech demo – (17 pictures total). I tested this 740MB demo on two Radeon HD 6970 in CrossFire with an average framerate of 40 FPS. You can download the demo from this page (an account is required).

Finally, the lighting in this demo is physically based in that it is fully HDR and the material and reflection models take advantage of the ALU power of the AMD Radeon HD 7900 GPU to calculate physically accurate light and surface interactions (multiple BRDF equations, realistic use of index of refraction, absorption based on wavelength for metals, etc). This technique also allows for adding one bounce global illumination effects by spawning virtual point light sources where light strikes a surface. The end result is a per-pixel or per-tile list of lights that forward-render based shaders use for lighting each pixel. Specifically, this demo uses DirectCompute to cull and manage lights in a scene. The Leo demo showcases a real-time, DirectX® 11 based lighting pipeline that is designed to allow for rendering scenes made of arbitrarily complex materials (including transparencies), multiple lighting models, and minimal restrictions on the number of lights that can be used - all while supporting hardware MSAA and efficient memory usage. This D3D11 demo uses Bullet for physics and Fmod for the sound. Seems AMD ditched the Trinigy engine used in the previous HK2207 tech-demo. This tech-demo is based on a (home-made?) engine in version 3.3 (build 1). AMD has released a Direct3D 11 tech-demo to showcase the performance of Radeon HD 7900 series.

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