They could be more like AMD in that regard, to answer your question:

Direct contributions to Linux kernel: AMD contributes directly to the Linux kernel, providing open-source drivers like amdgpu, which supports a wide range of AMD graphics cards.

Mesa 3D Graphics Library: AMD supports the Mesa project, which implements open-source graphics drivers, including those for AMD GPUs, enhancing performance and compatibility with OpenGL and Vulkan APIs.

AMDVLK and RADV Vulkan drivers: AMD has released AMDVLK, their official open-source Vulkan driver. In addition to this, there's also RADV, an independent Mesa-based Vulkan driver for AMD GPUs.

Open Source Firmware: AMD has released open-source firmware for some of their GPUs, enabling better integration and functionality with the Linux kernel.

ROCm (Radeon Open Compute): An open-source platform providing GPU support for compute-oriented tasks, including machine learning and high-performance computing, compatible with AMD GPUs.

AMDGPU-PRO Driver: While primarily a proprietary driver, AMDGPU-PRO includes an open-source component that can be used independently, offering compatibility and performance for professional and gaming use.

X.Org Driver (xf86-video-amdgpu): An open-source X.Org driver for AMD graphics cards, providing support for 2D graphics, video acceleration, and display features.

GPUOpen: A collection of tools, libraries, and SDKs for game developers and other professionals to optimize the performance of AMD GPUs in various applications, many of which are open source.