Khronos royalty-free open standards for 3D graphics, Virtual and Augmented Reality, Parallel Computing, Machine Learning, and Vision Processing

The Khronos Group released Vulkan 1.4.327, featuring a vendor extension from Valve, VK_VALVE_video_encode_rgb_conversion extension for efficient RGB to YCbCr color conversions in video encoding. This boosts performance in gaming, streaming, and multimedia workflows, reducing CPU overhead on compatible GPUs. It highlights Valve's role in advancing open-source graphics, promising broader adoption despite potential fragmentation challenges. 

In this blog post, Eric Chadwick introduces the four newest showcase assets and talk about the unique challenges they present. These models were designed not just to look great in the updated glTF Sample Viewer, but to demonstrate what’s possible with glTF today. You can explore the models directly in the Sample Viewer, dig into their source files on GitHub, and follow detailed creation notes for each one. 

This Forbes article highlights the big ticket news item at SIGGRAPH 2025 highlighting the Khronos Group's announcement of expanding glTF into geospatial Gaussian splats. Khronos announced at Siggraph 2025 that it would be partnering with the Open Geospatial Consortium, Niantic Spatial, Cesium and Esri to integrate geospatial Gaussian splats into the glTF 3-D asset format standard. Gaussian splats have become a popular AI-accelerated technique for generating 3-D models of people, places and objects at minimal cost.

The OpenXR ecosystem is critical to ensuring robust and efficient cross-platform XR development. This RFP aims to secure resources to bring the OpenXR Validation Layers to a comparable level of maturity and usability to the high standard set by the Vulkan Validation Layers with its accurate, comprehensive, and developer-friendly diagnostics. The RFP deadline for responses is 6pm PT on September 30, 2025.

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The Khronos Group Birds of a Feather Sessions yesterday at the Fairmont was superb! It was great to see everyone again and to hear updates from WebGL, glTF, 3D Commerce, ANARI, OpenXR, Slang, ML Council and Vulkan. Afterward, the networking reception was packed and festive! 

Thank you to our Networking Reception sponsors: Cesium, LunarG, and NVIDIA!