Sets the format of the texture.
The format is specified as a fourcc code.
The format must be set before calling gdk.gltexture_builder.GLTextureBuilder.build.
the texture's format or 0 to unset
Sets the format of the texture.
The format is specified as a fourcc code.
The format must be set before calling gdk.gltexture_builder.GLTextureBuilder.build.