crysis2 dx9一幀渲染流程：

1. TestCooperativeLevel()
2. 設置n-patch細分等級D3DRS_ADAPTIVETESS_Y
3. GPU同步設置，Query9::GetData(), Query9::Issue()
4. ShadowMap
5. ZPass, 生成GBuffer信息。
6. Depth_DownScale
7. SSAO
8. Scattering List

9. Deferred Lighting
9.1 Irradiance Volume Evaluate
9.2.1 Visares
9.2.2 Outdoor
9.3   Deferred CubeMaps
9.4   Deferred Lights
9.5   SSAO_BLUR
9.6   Deferred Lights
9.6.1 ShadowMap Pool

10. 不透明物體繪制。
10.1 General(BW)
10.2 地形(BW)
10.3 General(AW)
10.4 地形(AW)
10.5 細節(BW)
10.6 細節(AW)
10.7 皮膚生成
10.8 皮膚應用

11. 半透明物體繪制。
11.1 霧

12. Glow Gen(光暈生成)

13. HDR Post Proesss
13.1 Motion Blur, 運動模糊
13.1.1 Motion Vector Gen
13.1.2 Motion Vector Dilate
13.1.3 Motion Vector Apply
13.1.4 Motion Vector Apply Pass 2

13.2 HalfRes downsample
13.3 QuarterRes downsample
13.4 BrightPass
13.5 Bloom and Flares
13.5.1 TexBlur 16Taps
13.5.2 TexBlur Gaussian
13.5.3 TexBlur Gaussian
13.5.4 HDR flares

13.6 Sunshafts生成
13.7 MergeColorCharts
13.8 CombineColorGradingWithColorChart
13.9 ToneMapping

14. Post Effects
14.1 MSAA
14.2 3D HUD

15. 刷新繪制
16. 繪制界面
17. 繪制調試信息