4/2/2023 0 Comments 720p godfall backgroundsWhat this means is that at a target resolution of 4K, the Quality mode runs at 1440p, and the Performance mode at 1080p, with the other modes somewhere in-between.įSR supports any resolution, it's not limited to 4K and 1440p, and the scale factors will apply in the same way. It's only fair to directly compare them, and we'll do that later in this article.įSR offers 4 quality modes: Ultra Quality, Quality, Balanced and Performance.Įach has a distinct scale factor: 1.3x for Ultra Quality, 1.5x for Quality, 1.7x for Balanced and 2.0x for Performance. In practical terms, both technologies have been designed and created to achieve the same goal: improve gaming performance by rendering at a lower resolution, but at minimal loss of visual quality through upscaling. Some people will compare the way FSR works to the way DLSS works and might conclude that FSR is not an actual competitor to DLSS because they work in fundamentally different ways. That means popular mainstream GPUs like the GTX 1060 and GTX 1660 can take advantage of FSR. The second is that by not using AI, AMD is hoping to achieve broader support and from the get go it can support AMD GPUs from the Radeon RX 480 era (2016) and newer, as well as Nvidia GPUs from the GeForce 10 series and newer. FSR is a single compute shader with simple data inputs, and is open source technology. By optimizing each game, you can make sure only the intended portion of the game is run at a reduced render resolution.ĪMD has taken the approach of spatial upscaling for two reasons. If FSR was applied to the final frame output from a game, many elements (like the HUD) would be upscaled, likely with artifacts and other visual problems. This is because FSR needs to be run before the final effects stage in the pipeline, so before the HUD is rendered, and before things like film grain are implemented. There is only one input to the algorithm, which is the lower resolution frame.ĭespite being a simpler technique, FSR still requires per-game integration. AMD calls their technique an "advanced edge reconstruction algorithm," which is combined with a sharpening pass to create the final image. However, with less data to work with, spatial upscaling algorithms need to be really good at figuring out how to reconstruct the image, and traditionally this is where they've fallen short.ĪMD hasn't gone into great detail on how their algorithm works, but they tell us this is not a simple rehash of bilinear upscaling, which is the 'standard' method for spatial upscaling. This greatly simplifies the algorithm - spatial upscaling does not rely on data from multiple frames, or motion vectors, which makes it easier to integrate into games as there are less data inputs. AMD tells us that AI is not used at any stage of the FSR process (so FSR is not the technology described in that patent that's been floating around). Instead of using temporal upscaling, FSR relies exclusively on spatial upscaling. DLSS has gone through more than one iteration, and right now at version 2.0, it's a major improvement over the initial release and it's also gathered decent game support after much work from Nvidia.įSR takes a different approach. Temporal upscaling means data is accumulated from multiple frames and combined into the final image, with the AI component running on Nvidia's Tensor cores to assist with this reconstruction. The most prominent form of this today is Nvidia's DLSS, the company's proprietary AI-based temporal upscaling solution that runs on GeForce RTX GPUs. Reducing the rendering resolution improves performance substantially, and if the upscaling technique is good enough, this can be achieved while preserving most of the image detail. Like DLSS and checkerboard rendering, the concept is that you can reduce the game's rendering resolution, and use an algorithm to upscale the image to your target resolution, typically the native resolution of your monitor. What is FSR?įSR is an upscaling technology that's designed to improve the performance of games at minimal loss to visual quality. We've got a stack of quality comparisons at different resolutions, performance benchmarks across several GPUs, and comparisons to other upscaling technologies. This article is going to be a comprehensive overview of FSR. It's taken AMD a long time to prepare their own upscaling feature, but starting today AMD is ready to compete and now it needs to bring support for FSR in more games. Make no mistake, FidelityFX Super Resolution (or FSR, for short) is AMD's direct competitor to Nvidia's DLSS, a feature that's increasingly become a key selling point for GeForce graphics cards in the last 18 months.
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