pub unsafe extern "C" fn gst_gl_shader_string_fragment_get_default(
context: *mut GstGLContext,
version: GstGLSLVersion,
profile: GstGLSLProfile,
) -> *mut c_char
pub unsafe extern "C" fn gst_gl_shader_string_fragment_get_default(
context: *mut GstGLContext,
version: GstGLSLVersion,
profile: GstGLSLProfile,
) -> *mut c_char