angle/extensions/EGL_ANGLE_device_metal.txt

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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