Commit 5f70adf6 authored by Seungha Yang's avatar Seungha Yang Committed by Matthew Waters

gl/egl/display: Add support EGLDevice display type

Simple addition for supporting EXT_platform_device typed display.
It's a kind of special display type (part of EGL specification)
which has no window at all.
To use EGLDevice explicitly, set environment "GST_GL_WINDOW=egl-device"

See also
parent 7a378ba3
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