D3D pure device

来源：互联网发布：网络教育学位证有用吗编辑：程序博客网时间：2024/04/29 21:12

A normal NOT pure D3D device:

+----------------------------+
|Your application            |       
+----------------------------+     
|D3D API (COM interface etc) |       
+----------------------------+
|D3D Parameter checking      |
+----------------------------+        
|D3D Redundant State checking|        ||
+----------------------------+        ||
|D3D State caching           |       _||_
+----------------------------+       /  /
|D3D Optimisations (batching)|        //
+----------------------------+
|D3D Software data processing|
+----------------------------+
|D3D DDI                     |
+----------------------------+
|Device Driver               |
+----------------------------+

A PURE D3D device:

+----------------------------+
|Your application            |       
+----------------------------+     ||
|D3D API (COM interface etc) |     ||
+----------------------------+    _||_
|D3D DDI                     |    /  /
+----------------------------+     //
|Device Driver               |
+----------------------------+

D3D pure device 不会保存渲染状态(没有state cache)

并且要求是 HardwareVertexProcessing的