kc3-lang/angle/extensions/EGL_ANGLE_device_metal.txt

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• Hash : 4ac6ea2a
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  Date : 2020-07-18T21:05:37
  

  Metal: implement ANGLE_device_metal extension.
  
  Allow user to query internal MTLDevice used by Metal back-end.
  
  Bug: angleproject:2634
  Change-Id: I9b0a6eaad8c634069f43e47d5f4f88f61da35f74
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2757810
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  Reviewed-by: Kenneth Russell <kbr@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• extensions/EGL_ANGLE_device_metal.txt

• Name
  
      ANGLE_device_metal
  
  Name Strings
  
      EGL_ANGLE_device_metal
  
  Contributors
  
      Le Hoang Quyen
  
  Contact
  
      Jamie Madill, Google (jmadill 'at' google 'dot' com)
      Le Hoang Quyen (lehoangq 'at' gmail.com)
  
  Status
  
      Draft
  
  Version
  
      Version 1, Jul 19, 2020
  
  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 metal device.
      This extension defines a mapping from an EGL device to a metal
      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_METAL_DEVICE_ANGLE              0x34A6
  
  Add a new section 2.1.3 (Metal Devices) after 2.1.2 (Devices)
  
      Somewhat analogous to an EGL device, a Metal device establishes a
      namespace for Metal operations. In the Metal APIs, such devices are
      represented by pointers. For more details, see the Metal
      documentation.
  
  Changes to section 3.2 (Devices)
  
      Replace the paragraph immediately following the prototype for
      eglQueryDeviceAttribEXT:
  
      <attribute> may be EGL_METAL_DEVICE_ANGLE.
      On success, EGL_TRUE is returned, and a valid MTLDevice pointer
      corresponding to the EGL device is returned in <value>. This handle
      is compatible with Metal API functions. If the EGL device is not currently
      associated with a Metal device and <attribute> is EGL_METAL_DEVICE_ANGLE,
      EGL_BAD_ATTRIBUTE is returned, and <value> is left unchanged.
  
  Issues
  
      None
  
  Revision History
  
      Version 1, Jul 19, 2020 (Le Hoang Quyen)
          - Initial Draft
  

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