id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
52	Detailed surface	gongminmin	gongminmin	"Add a sample about detailed surface, including:
1. Bump mapping
2. Parallax mapping
3. Parallax occlusion mapping
4. Tessellation"	task	closed	major	4.0.0	Samples		fixed