kc3-lang/angle/extensions/EGL_ANGLE_device_webgpu.txt

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• Hash : 3cf7a604
  Author :
  Date : 2025-05-17T19:39:08
  

  WebGPU: Add extensions for importing external textures
  
  Add EGL_ANGLE_device_webgpu which exposes the adapter and device used
  by ANGLE internally.
  
  Add EGL_ANGLE_webgpu_texture_client_buffer which allows importing
  external WGPUTexture handles if they share the same device as ANGLE
  (queried from EGL_ANGLE_device_webgpu).
  
  Bug: angleproject:418022112
  Change-Id: I0683d36b84a0f8e0e9b68a5ec0d3aa8b7a95152c
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6553063
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  

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• extensions/EGL_ANGLE_device_webgpu.txt

• Name
  
      ANGLE_device_webgpu
  
  Name Strings
  
      EGL_ANGLE_device_webgpu
  
  Contributors
  
      Geoff Lang
  
  Contact
  
      Geoff Lang, Google (geofflang 'at' google 'dot' com)
  
  Status
  
      Draft
  
  Version
  
      Version 1, May 15, 2025
  
  Number
  
      EGL Extension #XXX
  
  Extension Type
  
      EGL device extension
  
  Dependencies
  
      This extension is written against the language of EGL 1.5 as
      modified by EGL_EXT_device_query.
  
      EGL_EXT_device_query is required.
  
  Overview
  
      ANGLE has the ability to run GPU commands on a WebGPU device.
      This extension defines a mapping from an EGL device to a WebGPU
      device, after it's queried from an EGL display.
  
  IP Status
  
      No known claims.
  
  New Types
  
      None.
  
  New Procedures and Functions
  
      None.
  
  New Tokens
  
      Accepted as a queried <attribute> in eglQueryDeviceAttribEXT:
  
          EGL_WEBGPU_DEVICE_ANGLE              0x34F3
          EGL_WEBGPU_ADAPTER_ANGLE             0x34F4
  
  Changes to section 3.2 (Devices)
  
      Replace the paragraph immediately following the prototype for
      eglQueryDeviceAttribEXT:
  
      <attribute> may be EGL_WEBGPU_DEVICE_ANGLE or EGL_WEBGPU_ADAPTER_ANGLE.
      On success, EGL_TRUE is returned, and a valid WGPUDevice or WGPUAdapter
      handle corresponding to the EGL device is returned in <value>. wgpuAddRef is
      called on the handle before returning and the client is responsible for
      releasing this reference. This handle is compatible with WebGPU API functions.
      If the EGL device is not currently associated with a WebGPU device and <attribute>
      is EGL_WEBGPU_DEVICE_ANGLE or EGL_WEBGPU_ADAPTER_ANGLE, EGL_BAD_ATTRIBUTE is
      returned, and <value> is left unchanged.
  
  Issues
  
      None
  
  Revision History
  
      Version 1, May 15, 2025 (Geoff Lang)
          - Initial Draft
  
  

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