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NVIDIA Image Scaling Limited to DX11 GPUs, Not for Vulkan/OpenGL as is, Unlike AMD FSR

Some interesting facts about NVIDIA’s newly open-sourced Image Scaling technology have come to light. According to users on the Phoronix forums, unlike AMD’s FSR spatial upscaler, NVIDIA’s NIS is a D3D compute shader (FSR is a generic HLSL/GLSL shader compatible with any API and hardware) limited to DX11+ compatible games and systems. Furthermore, NIS is much more abstract and high-level compared to FSR which makes it hard to customize and tweak depending upon the game.

Via: JirayD

NVIDIA’s Image Upscaler also appears to be a simple single-pass shader wherein upscaling and sharpening are both done within the same pass. AMD’s FSR, on the other hand, uses separate passes for each, making it a more intricate shader. The fact that NIS isn’t portable to Vulkan or OpenGL means that it can’t be used on titles using any other API other than DX11+, rendering it useless for Linux and non-Windows platforms. In the end, NIS appears to be a PR stunt more than anything else, trying to undermine AMD’s promise that FSR will run on “just about any PC”.

Areej

Computer hardware enthusiast, PC gamer, and almost an engineer. Former co-founder of Techquila (2017-2019), a fairly successful tech outlet. Been working on Hardware Times since 2019, an outlet dedicated to computer hardware and its applications.
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