At the Game Developers Conference (GDC) 2021, NVIDIA showcased its core RTX technologies, from RTXGI to RTXDI and DLSS, which run on ARM architecture.
One demo focused on MachineGames’ Wolfenstein: Youngblood, while the other demo, titled The Bistro, depicted a detailed urban scene in France. Both demos ran on an NVIDIA GeForce RTX 3060 GPU in combination with a MediaTek Kompanio 1200 Arm processor. As a reminder, NVIDIA is trying to buy ARM, although the deal is still under investigation by regulators, including the UK’s Competition and Markets Authority (CMA).
This is the list of the RTX technologies included in these new demos:
- Deep Learning Super Sampling (DLSS), which uses AI to increase frame rates and generate beautiful, sharp graphics for games.
- RTX Direct Illumination (RTXDI), which allows developers to add dynamic lighting to their gaming environments.
- NVIDIA Optix AI-Acceleration Denoiser (NRD), which uses AI to render high-fidelity images faster.
- RTX Memory Utility (RTXMU), which optimizes the way applications use graphics memory.
- RTX Global Illumination (RTXGI), which mimics the way light is reflected in real environments.
The RTXDI, NRD and RTXMU SDKS for Arm with Linux and Chromium are already available, while those for DLSS and RTXGI will be released soon.
The keenest readers will have noticed a brand new technology, the RTX Memory Utility or RTXMU. This is an open source SDK released today by NVIDIA. The goal is to reduce the memory consumption of acceleration structures used by applications under both DirectX Raytracing and Vulkan Ray Tracing APIs.
RTXMU reduces the time it takes a developer to integrate compaction and sub-allocation into an RTX title.
Eliminate wasted memory
For applications using RTXMU, NVIDIA RTX cards get a ~50% reduction in memory footprint.
Scenes with thousands of small unique BLAS benefit greatly from sub-allocation.
To ensure that we can support as many developers as possible, RTXMU is made available as open source on GitHub.
The following comparisons show a significant reduction in memory usage on GeForce RTX graphics cards when RTXMU is enabled.
NVIDIA also released a new Game Ready driver today, version 471.41. This driver would provide the best experience with Red Dead Redemption 2 and Chernobylite when using NVIDIA DLSS.
The latest game, which comes out of Steam Early Access on July 28, gets one of the biggest performance gains yet (up to 80%) when DLSS is enabled at 4K resolution.
As usual with all NVIDIA Game Ready drivers, there are additional fixes that are only mentioned in the changelog document. Check them out in the list below.
- [Capture One]: Hardware acceleration has stopped working. 
- NOHud/RemoveHud filter from Valorant game disabled. 
- [Doom Eternal]: The game may freeze during gameplay. 
- [League of Legends]: The game may not start. 
- [HDR]: Mouse cursor color may shift when connected to some DSC monitors in HDR mode
- Ansel DOF filter blurs the whole screen in some games. 
- Some screens screen resolution limited to 640×480 after driver update. 
- [HDMI 2.1][8K] HDMI audio playback may be distorted after changing the display modes
- [RDP] Remote desktop connection to PC with color set to 10-bit results in damaged corrupt
- GPU HDMI audio dropout may occur when connected to LG C9 OLED TV 
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