One may not have an GstGLContext available or current in the thread where one would need to update the shader. Support this by signalling create-shader whenever the one-shot 'update-shader' is set to TRUE.
One may not have an GstGLContext available or current in the thread where one would need to update the shader. Support this by signalling create-shader whenever the one-shot 'update-shader' is set to TRUE.