* Add an Engine debug setting to force GLES 2.0
This setting is only meaningful on GLES backends, it's otherwise
ignored. When set to true, the backend will try to force a ES2 context
if supported. If not supported by the platform,
the backend will pretend it's a ES2 context.
This setting is currently only taken into account by the EGL platform.
* Update filament/backend/include/backend/Platform.h
Co-authored-by: Powei Feng <powei@google.com>
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Co-authored-by: Powei Feng <powei@google.com>