Flag indicating that we should map the GL object instead of to system memory.
Combining #GST_MAP_GL with #GST_MAP_WRITE has the same semantics as though
you are writing to OpenGL. Conversely, combining #GST_MAP_GL with
#GST_MAP_READ has the same semantics as though you are reading from OpenGL.
Flag indicating that we should map the GL object instead of to system memory.
Combining #GST_MAP_GL with #GST_MAP_WRITE has the same semantics as though you are writing to OpenGL. Conversely, combining #GST_MAP_GL with #GST_MAP_READ has the same semantics as though you are reading from OpenGL.