| // Copyright (c) 2020 Simon Ser |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| |
| include::{generated}/meta/{refprefix}VK_EXT_physical_device_drm.txt[] |
| |
| === Other Extension Metadata |
| |
| *Last Modified Date*:: |
| 2021-06-09 |
| *IP Status*:: |
| No known IP claims. |
| *Contributors*:: |
| - Simon Ser |
| |
| === Description |
| |
| This extension provides new facilities to query DRM properties for physical |
| devices, enabling users to match Vulkan physical devices with DRM nodes on |
| Linux. |
| |
| Its functionality closely overlaps with |
| `EGL_EXT_device_drm`^<<VK_EXT_physical_device_drm-fn1,1>>^. |
| Unlike the EGL extension, this extension does not expose a string containing |
| the name of the device file and instead exposes device minor numbers. |
| |
| DRM defines multiple device node types. |
| Each physical device may have one primary node and one render node |
| associated. |
| Physical devices may have no primary node (e.g. if the device does not have |
| a display subsystem), may have no render node (e.g. if it is a software |
| rendering engine), or may have neither (e.g. if it is a software rendering |
| engine without a display subsystem). |
| |
| To query DRM properties for a physical device, chain |
| slink:VkPhysicalDeviceDrmPropertiesEXT to slink:VkPhysicalDeviceProperties2. |
| |
| include::{generated}/interfaces/VK_EXT_physical_device_drm.txt[] |
| |
| === References |
| |
| . [[VK_EXT_physical_device_drm-fn1]] |
| https://www.khronos.org/registry/EGL/extensions/EXT/EGL_EXT_device_drm.txt[`EGL_EXT_device_drm`] |
| |
| === Version History |
| |
| * Revision 1, 2021-06-09 |
| - First stable revision |
