All models must work fine with backface culling 所有模型必須應用隱面剔除。
Fixing backface culling generally needs you to select all faces that are incorrectly culled , and to flip their normal 要修復此問題,通常需要反轉所有沒有正確應用剔除的面的法線方向。
Backface culling will ensure that only one of the two surfaces will be displayed in the z - buffer anyway , meaning that there won ' t be any z - fighting problem 因為隱面剔除使得兩個面只有一個會顯示出來,這樣z緩沖就不會出現沖突了。
If some of your triangles are clockwise and others are anti - clockwise , backface culling will be messed up , and holes will randomly appear in the mesh when viewer in real - time 如果有些用順時針,有些逆時針,隱面剔除就會發生錯誤,實時檢測模型時就會看見網格上有隨機出現的漏洞。
24 frisken s f , perry r n . simple and efficient traversal methods for quadtrees and octrees . j . graphics tools , 2002 , 7 : 1 - 11 . 25 zhang h , hoff k . fast backface culling using normal masks 實驗表明,新方法能將順序點模型樹的繪制效率提高20 % 64 . 6 % ,并且越近觀察模型或模型中的遮擋關系越復雜時,新方法的加速比更高。