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gl: document GST_GL_* environment variables

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https://bugzilla.gnome.org/show_bug.cgi?id=733245
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Matthew Waters 2014-08-01 16:41:13 +10:00 committed by Tim-Philipp Müller
parent 5e2f15403c
commit d3804ee7aa
2 changed files with 12 additions and 0 deletions
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3
ext/gl/gstglimagesink.c
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@ -30,6 +30,9 @@
* If no Window ID was provided by the application, the element will
* create its own internal window and render into it.
*
* See the #GstGLDisplay documentation for a list of environment variables that
* can override window/platform detection.
*
* <refsect2>
* <title>Scaling</title>
* <para>

9
gst-libs/gst/gl/gstgldisplay.c
View file

@ -31,6 +31,15 @@
* Elements are required to make use of #GstContext to share and propogate
* a #GstGLDisplay.
*
* There are a number of environment variables that influence the choice of
* platform and window system specific functionality.
* - GST_GL_WINDOW influences the window system to use. Common values are
* 'x11', 'wayland', 'win32' or 'cocoa'.
* - GST_GL_PLATFORM influences the OpenGL platform to use. Common values are
* 'egl', 'glx', 'wgl' or 'cgl'.
* - GST_GL_API influences the the OpenGL API requested by the OpenGL platform.
* Common values are 'opengl' and 'gles2'.
*
* <note>Certain window systems require a special function to be called to
* initialize threading support. As this GStreamer GL library does not preclude
* concurrent access to the windowing system, it is strongly advised that