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We've been waiting for this for a long time. The Witcher 3: Wild Hunt was one of the key titles we were looking to see upgraded for Sony's super-charged PS4 and finally, ten months from the system's release, patch 1.51 with full Pro support finally dropped today. The question is, has full 4K been delivered? On top of that, has anything else changed or seen improvement?We've only just started to look at the upgraded version of the title, but it's pretty clear from the outset that CD Projekt RED is using checkerboard rendering to boost the presentation of the game from its native 1080p on base hardware. This technique effectively sees the developer render a 1920x2160 framebuffer in a checkerboard configuration, typically filling in the gaps using information from prior frames.
It's proven particularly effective in games like Horizon Zero Dawn and Destiny 2, with little in the way of artefacts visible to the naked eye - it's an excellent technique for a GPU better suited to 1440p gameplay to achieve a good presentation fit for a 4K screen. The Witcher 3's implementation varies in quality - thanks to the high pixel density and 'sample and hold' blur found in LCD technology, the game scales up well to ultra HD displays.
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