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Rasterization on Larrabee: A First Look at the Larrabee New Instructions (LRBni) in Action
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Larrabee is Intel's revolutionary approach to take the current evolving programmability of the GPGPU to its logical end. The Larrabee architecture features many cores and threads, as well as a new vector instruction-set extension, the Larrabee new instructions (LRBni). This talk will provide an overview of LRBni and discusses the major instruction features - 16-wide SIMD, multiply-add, ternary instructions, predication, built-in data-format conversion, and gather/scatter. The talk will then take a close look at a specific - and not obviously vectorizable - application of LRBni - rasterization. This is a crucial stage in the Larrabee rendering pipeline, and it demonstrates how developers can use the flexibility of the new instruction set to solve problems that are not obviously shader-like.

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