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Introduction to Post Process

Introduction to Post Process. Sai-Keung Wong Chiao Tung University, Taiwan, R.O.C. Reference: Mastering Unreal Technology (MUT). Contents. Post Process?

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Introduction to Post Process

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  1. Introduction to Post Process Sai-Keung Wong Chiao Tung University, Taiwan, R.O.C. Reference: Mastering Unreal Technology (MUT)

  2. Contents • Post Process? • The term post-processing (or postproc for short) is used in the video/film business for quality-improvement image processing (specifically digital image processing) methods… • Source: http://en.wikipedia.org/wiki/Video_post-processing

  3. Depth of Field Reference Image Motion Blur Bloom

  4. Simple PostProcess • View->World Properties

  5. World Settings and Post Process全圖設置與後期特效對象 • WorldInfo->Post Process

  6. Default Post Process • Change Bloom Scale -> 20

  7. World Post Process • Save and test. Before After

  8. Post Process Effect • In content browser • Right click at empty space • Select “Post Process Chain” • Package（包）: GameLevel00 • Group（组）: PostProcesses • Name（名称）: ppc_00

  9. Post Process Effect 場景渲染目標

  10. DOFEffect -> • FalloffExponent（衰减指数）: • BlurKernelSize（模糊核心大小）: • MaxNearBlurAmount（最大近端模糊量）: • MaxFarBlurAmount（最大远端模糊量）: • FocusInnerRadius（焦点内半径）: • FocusDistance（焦距）:

  11. Create a UIScene • And then set Post Process for background

  12. Post Process Effects Modules（后期特效模块） • SceneRenderTarget（场景渲染目标） • BloomEffect（强光溢出特效） • DOFEffect（景深特效） • DOFAndBloomEffect（景深与强光溢出特效） • MaterialEffect（材质特效） • MotionBlurEffect（运动模糊特效）

  13. Post Process Effects Modules（后期特效模块） • UberPostProcessEffect（Uber后期特效） • Should use • 场景色调、Bloom，以及景深效果。 • Bloom及景深效果 should be applied first. • Then apply 场景色调效果。

  14. 通用属性 • bShowInEditor（编辑器中显示） • bShowInGame（游戏中显示） • bUseWorldSettings（使用全图设置） • EffectName（特效名称） • SceneDPG (Scene Depth Priority Group) （场景深度优先组）

  15. Playing while UIScene activated • Save and test. Play the game. • After using the trigger, the game is paused!

  16. Playing while UIScene activated • In UIScene Editor, • Change properties • Flags • Interaction

  17. 1. Playing while UIScene activated • Uncheck “Pause game while activated”

  18. 2. Playing while UIScene activated • Scene Input Mode -> INPUTMODE_None

  19. Playing while UIScene activated • Save and test. You can walk around and fire!

  20. Playing while UIScene activated • Now, add a delay action before the effect is taken place. Save and test.

  21. Material Effect

  22. Uber後期特效屬性 • SceneShadows（場景陰影） • X: 0.0 • Y: 0.25 • Z: 0.50 • Green component < 0.25 • Blue component < 0.5 • => 像素色 = 0.0.

  23. Uber後期特效屬性 • SceneHighlights（场景高亮)： • X: 0.5 • Y: 0.675 • Z: 1.0 • Green > 0.675 • Blue > 0.5 • => 像素变为1.0，

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