Rys Sommefeldt
GFXIP Project Lead Architect at AMD
Worthing, England, United Kingdom
Summary
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RockstarRys Sommefeldt is a veteran GPU architect with nearly 30 years of experience and a decade-plus in senior product and engineering leadership roles across AMD and Imagination Technologies. Currently a GFXIP Project/Lead Architect at AMD, he blends low-level competitive and performance analysis with product roadmap strategy and advanced software feature architecture—particularly in ray tracing and FidelityFX delivery. He has led GPU variant architectures, driven game performance and correctness for Radeon, and resurrected PowerVR ray-tracing efforts, showing a rare mix of system-wide vision and hands-on shader and pipeline work. Outside of product teams he contributes to open-source projects spanning Vulkan/Direct3D prototyping and keyboard firmware, revealing a practical maker mindset and attention to embedded detail. Based in Worthing, England, he pairs deep domain expertise with a knack for shipping pragmatic, performance-centric GPU features.
11 years of coding experience
13 years of employment as a software developer
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (26)
vulkan10
keyboard-input10
c-language10
atmel10
shader10
qmk-firmware10
firmware10
qmk10
c1110
keymaps10
keyboard10
c1710
avr10
keyboard-layout10
sys10
Programming languages (15)
Github contributions (5)
GPUOpen-LibrariesAndSDKs/Cauldron
Aug 2020 - Aug 2022
A simple framework for rapid prototyping on Vulkan or Direct3D 12
Role in this project:
Backend Developer
Backend DeveloperContributions:9 releases, 13 commits, 5 PRs in 2 years
Contributions summary:Rys contributed to the Cauldron framework by implementing and updating various features. Their commits show modifications to shader code, including updates to the DirectX 12 shader types. Further contributions include adding support for dynamic uniform buffer descriptors and adjustments to the rendering pipeline. The user also made changes to GLTF-related files, including PBR materials and lighting, implying the integration or improvement of 3D model support.
cppsimple-frameworkvulkanprototypingdirect3d-12
qmk/qmk_firmware
Feb 2019 - Jul 2021
Open-source keyboard firmware for Atmel AVR and Arm USB families
Role in this project:Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:3 reviews, 17 commits, 28 PRs in 2 years 5 months
Contributions summary:Rys primarily contributes to the QMK firmware, focusing on keyboard layout customization and feature enhancements. Their work includes creating UK-specific layouts and sendstring lookup tables, as well as personal keyboard layouts for various keyboard models, indicating a strong focus on hardware and firmware configuration. The user also demonstrates an understanding of embedded systems by modifying keyboard firmware configurations, including bootloader settings, LED control, and VIA support.
rp2040firmwareavratmelkeyboard-support
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