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Reference.org
Foveated rendering
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<p>Foveated rendering is a <a href="/facts/Rendering_(computer_graphics)/YYxfnmAq">rendering</a> technique which uses an <a href="/facts/Eye_tracking/xHrkQeh6">eye tracker</a> integrated with a <a href="/facts/Virtual_reality_headset/wzMo56XW">virtual reality headset</a> to reduce the rendering workload by greatly reducing the image quality in the <a href="/facts/Peripheral_vision/r436lpjQ">peripheral vision</a> (outside of the zone gazed by the <a href="/facts/Fovea_centralis/cCqjWzTj">fovea</a>). </p><p>A less sophisticated variant called fixed foveated rendering doesn't utilise eye tracking and instead assumes a fixed focal point. </p>