kc3-lang/angle/include/EGL

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  • Hash : 51386f4a
    Author : Kenneth Russell
    Date : 2019-04-11T21:55:20 

    Reland "Define and expose EGL_ANGLE_power_preference extension."

This is a reland of ac58e63295f093b7518535bdd060ff832025b0c5

The original CL was reverted in a rush because I thought there was an
uninitialized variable bug, but upon later re-review this turned out to
not be the case.

Original change's description:
> Define and expose EGL_ANGLE_power_preference extension.
>
> Allows application to select the integrated or discrete GPU on
> dual-GPU macOS systems.
>
> Tested by modifying the example program at:
> https://github.com/grorg/ANGLEIOSurfaceTest
>
> and verifying that both integrated and discrete GPUs can be selected.
> (The changes to that program will be upstreamed once some build issues
> are resolved.)
>
> Bug: 2813
> Change-Id: Ibeb17778512896456d220e9bc4cf8f222aa57057
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1570081
> Commit-Queue: Kenneth Russell <kbr@chromium.org>
> Reviewed-by: Geoff Lang <geofflang@chromium.org>

Bug: 2813
Tbr: geofflang@chromium.org
Tbr: cwallez@chromium.org
Change-Id: Iea000dd718f4f4b4f57237adb1dc44381b10106b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1575419
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>

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    Description

    A conformant OpenGL ES implementation for Windows, Mac, Linux, iOS and Android.

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  • README.md

  • ANGLE EGL Headers

    The EGL headers ANGLE uses are generated using the Khronos tools but modified to include function pointer types and function prototype guards.

    Regenerating EGL.h

    1. Install Python 3 (not 2) with the lxml addon. You can do this using pip install lxml from your Python’s Scripts folder.

    2. Clone https://github.com/KhronosGroup/EGL-Registry.git.

    3. Edit EGL-Registry/api/genheaders.py:

      1. Look for the section titled # EGL API - EGL/egl.h (no function pointers, yet @@@)
      2. Change genFuncPointers = False, to genFuncPointers = True,
      3. Change protectProto = False, to protectProto = 'nonzero',
      4. Change protectProtoStr = 'EGL_EGLEXT_PROTOTYPES', to protectProtoStr = 'EGL_EGL_PROTOTYPES',

    4. Set your working directory to EGL-Registry/api/.

    5. Run python genheaders.py -registry egl.xml EGL/egl.h

    6. The generated header will now be in EGL-Registry/api/EGL/egl.h. You can copy the header over to this folder.

    7. Also update scripts/egl.xml with the latest version from EGL-Registry/api/.

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