第1章　HDRP入門......................................................................................................1
1.1　摘要 .................................................................................................................................1
1.2　離線渲染和實(shí)時(shí)渲染 .....................................................................................................8
1.2.1　建模功能（ProBuilder、ProGrid和PolyBrush套件）.....................................8
1.2.2　Timeline（非線編工具）................................................................................9
1.2.3　Cinemachine（智能攝像機(jī)系統(tǒng)）..................................................................9
1.2.4　HD.Post.Processing.Effect（HDRP專用后期特效模塊）...............................9
1.2.5　可視化著色器編程工具Shader.Graph. .............................................................9
1.2.6　高級(jí)特效開發(fā)工具Visual.Effect.Graph............................................................9
1.2.7　視頻和動(dòng)畫輸出工具Unity.Recorder..............................................................9
1.2.8　HDRP針對(duì)不同材質(zhì)的模擬......................................................................... 10
1.3　在DCC軟件中準(zhǔn)備模型資產(chǎn) .......................................................................................10
1.3.1　在DCC軟件中使用的尺寸單位要與Unity統(tǒng)一. ........................................... 10
1.3.2　只在需要的地方使用三角面......................................................................... 11
1.3.3　紋理制作........................................................................................................ 11
1.3.4　支持FBX、USD和Alembic格式的資產(chǎn)導(dǎo)入. ................................................ 11
1.3.5　Unity.Reflect支持導(dǎo)入Autodesk.Revit資產(chǎn).................................................. 11
1.4　Unity HDRP項(xiàng)目設(shè)置 ..................................................................................................12
1.4.1　創(chuàng)建一個(gè)基于高清渲染管線（HDRP）的Unity項(xiàng)目................................. 12
1.4.2　通過示例項(xiàng)目了解HDRP相關(guān)的概念和模塊.............................................. 16
1.5　學(xué)習(xí)渠道 .......................................................................................................................52
1.6　本章總結(jié) .......................................................................................................................53
XVI　|　　創(chuàng)造高清3D虛擬世界：Unity引擎HDRP高清渲染管線實(shí)戰(zhàn)
第2章　實(shí)現(xiàn)市政廳辦公室場(chǎng)景....................................................................................54
2.1　摘要 ...............................................................................................................................54
2.2　實(shí)戰(zhàn)項(xiàng)目詳解 ...............................................................................................................55
2.2.1　使用Volume框架設(shè)置環(huán)境............................................................................ 58
2.2.2　添加屏幕后處理效果.................................................................................... 62
2.2.3　添加光源、Light.Probe（光照探針）和Reflection.Probe（反射探針）..........64
2.2.4　烘焙光照貼圖................................................................................................ 69
2.3　本章總結(jié) .......................................................................................................................74
第3章　HDRP配置文件和Volume框架詳解. .................................................................75
3.1　摘要 ...............................................................................................................................75
3.2　HDRP配置文件（HDRP Asset）介紹 ........................................................................75
3.2.1　Frame.Settings（幀設(shè)置）............................................................................. 75
3.2.2　Volume框架................................................................................................... 77
3.2.3　針對(duì)不同平臺(tái)使用不同的HDRP配置文件.................................................. 94
3.3　Volume框架詳解 ..........................................................................................................96
3.3.1　Exposure（曝光控制）.................................................................................. 99
3.3.2　Fog（霧效制作）.........................................................................................110
3.3.3　Lighting（光照）..........................................................................................121
3.3.4　Material（材質(zhì)）..........................................................................................121
3.3.5　Shadowing（陰影處理）..............................................................................122
3.3.6　Sky（天空）.................................................................................................122
3.3.7　Post-processing（后處理）..........................................................................126
3.3.8　Ray.Tracing（實(shí)時(shí)光線追蹤）....................................................................126
3.3.9　Local.Volume（本地Volume）使用示例.....................................................126
3.4　本章總結(jié) .....................................................................................................................130
第4章　HDRP光照系統(tǒng)詳解.....................................................................................131
4.1　摘要 .............................................................................................................................131
4.2　Sponza_Day_Lighting場(chǎng)景打光步驟解析 .................................................................131
4.2.1　步驟1：?jiǎn)⒂肧cene.Settings.Volume..............................................................134
4.2.2　步驟2：?jiǎn)⒂肈irectional.Light（平行光）...................................................136
　目　　錄　　|　XVII
4.2.3　步驟3：?jiǎn)⒂肰olume中的自動(dòng)曝光控制......................................................138
4.2.4　步驟4：?jiǎn)⒂盟�有燈籠模型和點(diǎn)光源..........................................................139
4.2.5　步驟5：?jiǎn)⒂脠?chǎng)景中所有反射探針（Reflection.Probe）............................140
4.2.6　步驟6：?jiǎn)⒂脠?chǎng)景中的光照探針組（Light.Probe.Group）.........................143
4.2.7　步驟7：完成整個(gè)場(chǎng)景的光照烘焙..............................................................145
4.2.8　步驟8：增強(qiáng)間接光強(qiáng)度..............................................................................150
4.2.9　步驟9：處理陰影和環(huán)境光遮蔽..................................................................154
4.2.10　步驟10：添加霧效. .....................................................................................166
4.2.11　步驟11：畫面抗鋸齒處理..........................................................................168
4.2.12　步驟12：添加后處理Volume組件. .............................................................171
4.3　Sponza_Night_Lighting場(chǎng)景打光步驟解析 ..............................................................173
4.3.1　修改Directional.Light設(shè)置. ............................................................................173
4.3.2　修改Scene.Settings.Volume→HDRI.Sky設(shè)置...............................................174
4.3.3　修改Scene.Settings.Volume→Exposure（曝光）設(shè)置..................................174
4.3.4　修改Scene.Settings.Volume→Fog（霧效）設(shè)置..........................................175
4.3.5　修改Scene.Settings.Volume→Contact.Shadow（接觸陰影）設(shè)置...............175
4.3.6　修改Post.Processing.Volume→Color.Adjustment（顏色調(diào)整）設(shè)置...........175
4.3.7　修改Post.Processing.Volume→White.Balance（白平衡）設(shè)置....................176
4.4　光源類型和模式 .........................................................................................................177
4.4.1　Unity中的光源類型有哪幾種. ......................................................................177
4.4.2　Unity中的光照單位......................................................................................200
4.4.3　如何制作和使用Light.Cookie為燈光添加更多細(xì)節(jié)....................................201
4.4.4　光照相關(guān)的常見問題匯總............................................................................204
4.5　光源分層 .....................................................................................................................212
4.5.1　光源分層的作用...........................................................................................212
4.5.2　光源分層實(shí)例講解.......................................................................................212
4.6　使用光照探針 .............................................................................................................217
4.6.1　為什么要使用光照探針. ...............................................................................217
4.6.2　使用光照探針的基本步驟............................................................................218
4.6.3　Mesh.Renderer組件中的Probes選項(xiàng)詳解.....................................................223
4.6.4　如何使用Mesh.Renderer組件的Probes→Anchor.Override參數(shù). ..................227
4.6.5　如果打開了Lighting窗口中Debug.Settings中的All.Probes.No.Cells選項(xiàng)，.
但是在Scene窗口看不到光照探針如何處理. ...............................................230
XVIII　|　　創(chuàng)造高清3D虛擬世界：Unity引擎HDRP高清渲染管線實(shí)戰(zhàn)
4.7　使用Reflection Probe為場(chǎng)景提供反射信息 ..............................................................231
4.7.1　Screen.Space.Reflection（屏幕空間反射）..................................................231
4.7.2　Reflection.Probe（反射探針）.....................................................................233
4.7.3　Sky.reflection（天空反射）..........................................................................242
4.8　陰影 .............................................................................................................................242
4.8.1　陰影的種類和三種光照模式........................................................................242
4.8.2　兩種Shadowmask模式下的陰影表現(xiàn). ...........................................................244
4.8.3　陰影的最大投射距離設(shè)置............................................................................248
4.8.4　Distance.Shadowmask和Shadowmask兩種模式對(duì)性能的影響. .....................248
4.9　本章總結(jié) .....................................................................................................................249
第5章　Lightmapping（光照烘焙）詳解. ...................................................................250
5.1　摘要 .............................................................................................................................250
5.2　漸進(jìn)式光照貼圖烘焙對(duì)場(chǎng)景中的模型有什么要求 .................................................252
5.3　漸進(jìn)式光照貼圖烘焙對(duì)硬件的要求是什么？支持Unity的哪些渲染管線 ............257
5.4　進(jìn)行漸進(jìn)式光照貼圖烘焙時(shí)烘焙出來的是什么 .....................................................257
5.5　漸進(jìn)式光照貼圖烘焙的CPU版本和GPU版本有什么區(qū)別 .....................................261
5.6　光照貼圖烘焙界面參數(shù)詳解 .....................................................................................261
5.7　不同顯卡對(duì)GPU版本的烘焙效率有什么影響 .........................................................275
5.8　相同場(chǎng)景使用CPU烘焙需要多長(zhǎng)時(shí)間 .....................................................................279
5.9　為什么GPU版本在烘焙的過程中，有時(shí)會(huì)自動(dòng)切換成CPU版本 .........................279
5.10　如何避免GPU烘焙自動(dòng)切換成CPU烘焙 ...............................................................280
5.11　如何解決光照貼圖接縫問題 ...................................................................................282
5.12　如何整體地查看光照貼圖的不同組成部分 ...........................................................283
5.13　如何查看場(chǎng)景中的模型在光照貼圖中的位置？
如何調(diào)整模型在光照貼圖中的占比大小 ...............................................................284
5.14　本章總結(jié) ...................................................................................................................288
第6章　HDRP材質(zhì)詳解...........................................................................................289
6.1　摘要 .............................................................................................................................289
6.2　使用Lit著色器制作典型材質(zhì) ....................................................................................290
6.2.1　木頭材質(zhì).......................................................................................................290
　目　　錄　　|　XIX
6.2.2　冰箱材質(zhì).......................................................................................................298
6.2.3　陶瓷材質(zhì).......................................................................................................300
6.2.4　（普通）玻璃材質(zhì).......................................................................................306
6.2.5�。◣д凵涞模┎ＡР馁|(zhì). ...............................................................................312
6.2.6　半透明材質(zhì)和次表面散射材質(zhì)....................................................................317
6.2.7　自發(fā)光材質(zhì)...................................................................................................327
6.2.8　Decal（貼花）的具體使用方法...................................................................330
6.3　渲染器和材質(zhì)優(yōu)先級(jí) .................................................................................................339
6.4　使用HDRP自帶的示例材質(zhì)庫 ..................................................................................340
6.4.1　金屬箔材質(zhì)...................................................................................................342
6.4.2　肥皂泡材質(zhì)...................................................................................................345
6.5　本章總結(jié) .....................................................................................................................348
第7章　Post.Processing后處理詳解. ........................................................................350
7.1　摘要 .............................................................................................................................350
7.2　為場(chǎng)景添加后處理效果的步驟 .................................................................................351
7.3　后處理效果應(yīng)用順序和效果組合 .............................................................................351
7.4　HDRP中的后處理效果 ..............................................................................................352
7.4.1　Tonemapping（色調(diào)映射）.........................................................................353
7.4.2　White.Balance（白平衡）............................................................................354
7.4.3　Bloom（泛光）............................................................................................354
7.4.4　Film.Grain（膠片顆粒）..............................................................................356
7.4.5　Depth.of.Field（景深）................................................................................357
7.4.6　Panini.Projection（帕尼尼投影）................................................................359
7.4.7　Lens.Distortion（鏡頭畸變）.......................................................................360
7.4.8　Motion.Blur（運(yùn)動(dòng)模糊）. ...........................................................................360
7.4.9　Chromatic.Aberration（色差）.....................................................................362
7.4.10　Vignette（暈映）........................................................................................363
7.4.11　Lift、Gamma和Gain（顏色分級(jí)）.............................................................364
7.4.12　Channel.Mixer（通道混合）......................................................................365
7.4.13　Color.Curve（顏色曲線）.........................................................................366
7.4.14　Color.Adjustment（顏色調(diào)整）.................................................................367
7.4.15　Split.Toning（分離調(diào)色）..........................................................................368
XX　|　　創(chuàng)造高清3D虛擬世界：Unity引擎HDRP高清渲染管線實(shí)戰(zhàn)
7.4.16　Shadow、Midtones、Highlights（陰影、中間調(diào)、高光）.......................369
7.5　本章總結(jié) .....................................................................................................................370
第8章　HDRP.Debug窗口介紹................................................................................371
8.1　摘要 .............................................................................................................................371
8.2　Material（材質(zhì)）相關(guān)的Debug窗口 .........................................................................372
8.3　Lighting（光照）相關(guān)的Debug窗口 ........................................................................374
8.4　Camera（相機(jī)）相關(guān)的Debug窗口 ..........................................................................376
8.5　MatCap顯示模式的使用方法 ....................................................................................378
8.6　本章總結(jié) .....................................................................................................................380
第9章　HDRP在VR中的應(yīng)用...................................................................................381
9.1　摘要 .............................................................................................................................381
9.2　HDRP VR支持的平臺(tái) ................................................................................................381
9.2.1　系統(tǒng)要求.......................................................................................................381
9.2.2　支持的平臺(tái)...................................................................................................382
9.3　配置HDRP項(xiàng)目以支持VR .........................................................................................382
9.4　可以應(yīng)用到VR中的HDRP功能 .................................................................................387
9.5　將市政廳辦公室場(chǎng)景轉(zhuǎn)換成HDRP VR ....................................................................388
9.5.1　配置HDRP+VR...........................................................................................388
9.5.2　配置XR.Plug-in.Management......................................................................388
9.5.3　添加XR.Interaction.Toolkit..........................................................................388
9.5.4　創(chuàng)建XR.Rig、控制器和瞬移區(qū)域...............................................................389
9.5.5　創(chuàng)建轉(zhuǎn)向系統(tǒng)...............................................................................................395
9.5.6　創(chuàng)建可交互物體...........................................................................................396
9.5.7　構(gòu)建項(xiàng)目到設(shè)備...........................................................................................397
9.6　在VR設(shè)備中進(jìn)行Debug .............................................................................................398
9.7　本章總結(jié) .....................................................................................................................400
第10章　HDRP.Custom.Pass應(yīng)用..........................................................................401
10.1　摘要 ...........................................................................................................................401
10.2　Custom Pass實(shí)例解析 ..............................................................................................401
　目　　錄　　|　XXI
10.2.1　實(shí)例講解1...................................................................................................402
10.2.2　實(shí)例講解2...................................................................................................407
10.3　如何查看Custom Pass的渲染階段 ..........................................................................408
10.4　本章總結(jié) ...................................................................................................................409
第11章　HDRP實(shí)時(shí)光線追蹤項(xiàng)目應(yīng)用......................................................................410
11.1　摘要 ...........................................................................................................................410
11.1.1　運(yùn)行光追應(yīng)用所需的軟硬件......................................................................411
11.1.2　Unity光追功能在編輯器中的位置.............................................................411
11.2　配置HDRP光追項(xiàng)目 ................................................................................................414
11.2.1　將普通HDRP項(xiàng)目升級(jí)到支持光追的HDRP項(xiàng)目....................................414
11.2.2　進(jìn)一步設(shè)置HDRP配置文件（HDRP.Asset）啟用相關(guān)的光追功能. .......417
11.2.3　在HDRP.Default.Settings界面啟用相機(jī)的Frame.Settings中的光追功能.....421
11.2.4　在Scene窗口打開相機(jī)的抗鋸齒功能和啟用刷新設(shè)置..............................422
11.3　光追功能的使用方法 ...............................................................................................423
11.3.1　環(huán)境光遮蔽.................................................................................................424
11.3.2　屏幕空間反射.............................................................................................427
11.3.3　屏幕空間全局光.........................................................................................431
11.3.4　Light.Cluster的使用.....................................................................................433
11.3.5　屏幕空間陰影.............................................................................................439
11.3.6　次表面散射.................................................................................................443
11.3.7　遞歸式渲染.................................................................................................450
11.3.8　路徑追蹤.....................................................................................................453
11.4　本章總結(jié) ...................................................................................................................457
附錄A　基于物理的光照單位和參考數(shù)值（參考自Unity.HDRP官方文檔）.....................458
附錄B　色溫（Color.Temperature）.......................................................................463
附錄C　在Unity中制作高質(zhì)量的光照效果...................................................................464