code: func ClearBufferSubData(target uint32, internalformat uint32, offset int, size int, format uint32, xtype uint32, data unsafe.Pointer) {
  	C.glowClearBufferSubData(gpClearBufferSubData, (C.GLenum)(target), (C.GLenum)(internalformat), (C.GLintptr)(offset), (C.GLsizeiptr)(size), (C.GLenum)(format), (C.GLenum)(xtype), data)
  }
docs: // fill all or part of buffer object's data store with a fixed value