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GPU Gems 3 by Hubert Nguyen

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Chapter 41. Using the Geometry Shader for Compact and Variable-Length GPU Feedback

Franck Diard NVIDIA Corporation

Introduction

Although modern graphics hardware is designed for high-performance computer graphics, the GPU is being increasingly used in other domains, such as image processing and technical computing, to take advantage of its massively parallel architecture.

Several generations of GPUs have incrementally delivered better instruction sets with branching and texture fetches for fragment programs, making the GPU a fantastic machine to execute data-parallel algorithms. On the other hand, algorithms with dynamic output such as compression or data searching are not well mapped to the GPU.

With a high-level shading language like Cg, programming ...

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