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godot-angle-static/doc/BuildingAngleForChromiumDevelopment.md
Bruce Dawson 79b0d80b25 Remove d3dcompiler_old.dll references 
d3dcompiler_old.dll was retained for compatibility with Windows 7 but
can now be removed. It will be missing from future toolchain packages
and we no longer need code to handle it.

This also updates a doc page to change python to python3.

Bug: chromium:1416385, chromium:1385856
Change-Id: I80c9b6dec887bc403f6fe3dac4007acb1f164ea6
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4251620
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
2023-02-15 19:35:45 +00:00

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How to build ANGLE in Chromium for dev

Introduction

On Windows, Linux, and Mac ANGLE now builds most core components cross platform, including the shader validator and translator as well as the graphics API translator. These parts can be built and tested inside a Chromium checkout.

ANGLE also includes some sample applications and a few other targets that don't build on Chromium. These steps describe how to build such targets within a Chromium checkout.

Prerequisite Steps:

  • Checkout and build Chromium.
  • To setup run these commands (note similarity to DevSetup):

Standalone ANGLE inside Chromium

  • To sync all standalone dependencies run:
cd src/third_party/angle
python3 scripts/bootstrap.py
gclient sync
  • To generate ANGLE standalone build files run:
cd src/third_party/angle
gn gen out/Debug
  • To build:
cd src/third_party/angle
ninja -j 10 -k1 -C out/Debug
  • For example, ninja -j 10 -k1 -C out/Debug angle_gles2_deqp_tests
  • To run a sample application: ./out/Debug/hello_triangle
  • To go back to the Chromium-managed version, remove third_party/angle/.gclient.

Working with ANGLE in Chromium

You will also want to work with a local version of ANGLE instead of the version that is pulled in by Chromium's DEPS file. To do this do the following:

  • cd to chromium/. One directory above chromium/src. Add this to chromium/.gclient:
solutions = [
  {
    # ...
    u'custom_deps':
    {
      "src/third_party/angle": None,
    },
  },
]

You will have full control over your ANGLE workspace and are responsible for running all git commands (pull, rebase, etc.) for managing your branches.

If you decide you need to go back to the DEPS version of ANGLE:

  • Comment out or remove the src/third_party/angle line in your custom_deps in chomium/.gclient.
  • Se the ANGLE workspace to the version specified in Chromium's DEPS. Ensure there are no modified or new files.
  • gclient sync your Chromium workspace.