the buffer id for this memory
the parent object
the OpenGL target of this texture for binding purposes
the OpenGL usage hints this buffer was created with
Initializes the GL Buffer allocator. It is safe to call this function multiple times. This must be called before any other #GstGLBuffer operation.
GstGLBuffer is a #GstMemory subclass providing support for the mapping of GL buffers.
Data is uploaded or downloaded from the GPU as is necessary.