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Commit 5927706b by Kenneth Russell Committed by Commit Bot
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Revise documentation on adding EGL extensions.

Provided more links and steps per earlier advice from geofflang@. Bug: angleproject:4842 No-Try: true Change-Id: I9c9361b4b71a63fd36f79a87d45e0f4b04c4140c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2297528 Commit-Queue: Kenneth Russell <kbr@chromium.org> Reviewed-by: 's avatarGeoff Lang <geofflang@chromium.org>
parent dd4723e3
Showing with 22 additions and 13 deletions
doc/AddingExtensions.md
......@@ -10,28 +10,37 @@ of these steps.
For extensions requiring new entry points:
* Add the extension xml to this file:
https://source.chromium.org/chromium/chromium/src/+/master:third_party/angle/scripts/egl_angle_ext.xml
* Add the extension xml to
[scripts/egl_angle_ext.xml](../scripts/egl_angle_ext.xml) .
* Note the prototypes for the new entry points must be added to the
top of the file, and the functions themselves grouped under the
extension name to the bottom of the file.
* Modify `scripts/registry_xml.py` to add the new extension as needed.
* Modify [scripts/registry_xml.py](../scripts/registry_xml.py) to add
the new extension as needed.
* run
[scripts/run_code_generation.py](https://source.chromium.org/chromium/chromium/src/+/master:third_party/angle/scripts/run_code_generation.py)
* Run
[scripts/run_code_generation.py](../scripts/run_code_generation.py)
.
* The entry point itself goes in the
[entry_points_egl_ext.h](https://source.chromium.org/chromium/chromium/src/+/master:third_party/angle/src/libGLESv2/entry_points_egl_ext.h)
and cpp files.
* The entry point itself goes in
[entry_points_egl_ext.h](../src/libGLESv2/entry_points_egl_ext.h)
and
[entry_points_egl_ext.cpp](../src/libGLESv2/entry_points_egl_ext.cpp)
.
* Update
[eglext_angle.h](https://source.chromium.org/chromium/chromium/src/+/master:third_party/angle/include/EGL/eglext_angle.h)
with the new entry points and/or enums.
* Add the new function to [libEGL.cpp](../src/libEGL/libEGL.cpp) and
[libEGL.def](../src/libEGL/libEGL.def) .
* Update [eglext_angle.h](../include/EGL/eglext_angle.h) with the new
entry points and/or enums.
* Add members to the appropriate Extensions struct in
[Caps.h](https://source.chromium.org/chromium/chromium/src/+/master:third_party/angle/src/libANGLE/Caps.h)
[Caps.h](../src/libANGLE/Caps.h) and
[Caps.cpp](../src/libANGLE/Caps.cpp) .
* Initialize extension availability in the `Display` subclass's
`generateExtensions` method for displays that can support the extension.
`generateExtensions` method for displays that can support the
extension; for example,
[DisplayCGL](../src/libANGLE/renderer/gl/cgl/DisplayCGL.mm).
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