set_update_region

Sets the region to be updated by this texture.

Together with [property@Gdk.GLTextureBuilder:update-texture] this describes an update of a previous texture.

When rendering animations of large textures, it is possible that consecutive textures are only updating contents in parts of the texture. It is then possible to describe this update via these two properties, so that GTK can avoid rerendering parts that did not change.

An example would be a screen recording where only the mouse pointer moves.

Parameters:

this	a `GdkGLTextureBuilder`
region	the region to update