Transcription of How GPUs Work - NVIDIA
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How GPUs Work - NVIDIA
96 ComputerHOW THINGS WORKIn the early 1990s, ubiquitousinteractive 3D graphics was stillthe stuff of science fiction. By theend of the decade, nearly everynew computer contained a graph-ics processing unit (GPU) dedicated toproviding a high-performance, visu-ally rich, interactive 3D dramatic shift was the in-evitable consequence of consumerdemand for videogames, advances inmanufacturing technology, and theexploitation of the inherent paral-lelism in the feed-forward graphicspipeline. Today, the raw computa-tional power of a GPU dwarfs that ofthe most powerful CPU, and the gap issteadily , GPUs have movedaway from the traditional fixed-func-tion 3D graphics pipeline toward a flexible general-purpose compu-tational engine.
expensive operation that isn’t even always possible for all scenes. All modern GPUs provide a depth buffer, a region of memory that stores the distance from each pixel to the viewer. Before writing to the display, the GPU compares a pixel’s distance to the distance of the pixel that’s already present, and it updates the display
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