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1、在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Building a High Performance 3D Games for Windows PhoneAdam SchaefferMicrosoft CorporationSESSION CODE:WPH308http:/在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Consistent sets of hardware capabilities defined by MicrosoftWindows Phone 7 H
2、ardwareResolutionTouch InputCPU/GPURAMHardware keyboard is optional在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确The CPU在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确The Evolution Of ProgrammingLow level controlStraight to the metalRaw performance tuningHigh level abstractionRely on
3、compiler and runtimeDeveloper productivity在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Why C#r0 x0rzPowerful and expressiveType safety reduces hard-to-track-down bugsReflectionInitializer syntaxGreat tooling(IntelliSense)Similar enough to C that learning and porting are easyBlazingly fast c
4、ompilesC#在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确.NET on WindowsUsually within a few percent of native performanceAwesome generational garbage collectionPerformance shootout:Raymond Chen vs.Rico Marianihttp:/ on Xbox 360360Significant delta between managed and native.NET Compact Framew
5、orkSimplistic mark-and-sweep garbage collectionXbox is not a general purpose computerUnforgiving in-order CPU architectureRequires custom VMX instructions for optimal math perfSecurity architecture poses challenges for jitted code在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确.NET on Windows
6、Phone 7In between Windows and Xbox 360.NET Compact FrameworkKeep an eye on garbage collection!ARMv7 CPUMore forgiving toward jitted codeARM jitter is more mature than PPC在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Ways To Call CodeInstance methodInterfaceDelegate/eventReflectionVirtual met
7、hod在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Choose Your Own AddressC+allows independent choice of.NET types dictate their allocation and usage semanticsData typeThe memory in which a type lives(placement new)How a type instance is referenced(T,T*,T&,const T&)Value typesint,bool,struct,V
8、ector3Reference typesclass,array,string,delegate,boxed value types在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确A Popular MythOft-repeated wisdomValue types live on the stackReference types live on the heapValue types live wherever they are declaredReference types have two piecesMemory alloc
9、ated from the heapA pointer to this heap memoryThat is subtly incorrect在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确By default,prefer class over structureUse struct for things that areclass vs.structSmall(=16 bytes)Short livedPass large structures by referenceMatrix a,b,c;c=Matrix.Multiply(
10、a,b);/copies 192 bytes!Matrix.Multiply(ref a,ref b,out c);在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Memory ManagementGarbage collection is not optionalCant have type safety without automatic memory management在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Mark and SweepTriggered pe
11、r megabyte of allocation1Starts with root references(stack variables,statics)2Recursively follows all references to see what other objects can be reached3Anything we didnt reach must be garbage4Compacts the heap,sliding live objects down to fill holes5在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的
12、问题也很明确Frameworks designed for performanceFrameworks designed for performanceTwo Ways To Keep GC HappyMake it run Less OftenIf you never allocate,GC will never runMake it Finish QuicklyCollection time is proportional to how many object references must be traversedUse object poolsSimple heap=fast coll
13、ectionUse value types and integer handles在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确GC.CollectExplicitly forces a garbage collectionUse wisely to give yourself more headroomAfter loadingDuring pauses in gameplayDont call every frame!在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Av
14、oiding AllocationBeware of boxingstring vs.StringBuilderUse WeakReference to track GC frequencyhttp:/ CLR Profiler on WindowsSee MIX10 talk:“Development and Debugging Tools for Windows Phone 7 Series”Use.NET Reflector to peek behind the curtainhttp:/www.red- GPU在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度
15、，由浅入深，所提出的问题也很明确Plus hardware accelerated 2D sprite drawingFive Configurable EffectsBasicEffectSkinnedEffectEnvironmentMapEffectAlphaTestEffectDualTextureEffect在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确BasicEffect0-3 directional lightsBlinn-Phong shadingOptional textureOptional fogOption
16、al vertex colorBasicEffect在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确DualTextureEffectDualTextureEffectFor lightmaps,detail textures,decalsBlends two texturesSeparate texture coordinatesModulate 2X combine mode(A*B*2)Good visuals at low pixel cost在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入
17、深，所提出的问题也很明确AlphaTestEffectFor billboards and impostersAdds alpha test operations(pixel kill)Standard blending is free with all effectsOnly need alpha test if you want to disable depth/stencil writesAlphaTestEffect在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确SkinnedEffectSkinnedEffectFor an
18、imated models and instancingGame code animates bones on CPUVertex skinning performed by GPUUp to 72 bonesOne,two,or four weights per vertex在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确EnvironmentMapEffectEnvironmentMapEffectOooh,shiny!Diffuse texture+cube environment mapCheap way to fake ma
19、ny complex lightsFresnel term simulates behavior when light reaches a surface and some reflects,some penetrates在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确A Balancing ActFramerateNumberof PixelsPixel Cost在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Balancing FramerateFramerate30 h
20、z refresh rateNo point updating faster than the display!Game.TargetElapsedTime=TimeSpan.FromSeconds(1f/30);在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确A Balancing ActPixel CostPrefer cheaper effectsMinimize overdrawMany known algorithms:Distance,frustum,BSP,sort front to backImplement“over
21、draw x-ray mode”Draw untextured with additive blendingBrighter areas indicate overdraw在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确A Balancing ActNumberof Pixels800 x480 is 25%more pixels than Xbox 1Great for textToo many pixels for intensive games800 x480=384,000 pixels600 x360=216,000 pix
22、els(56%)Dedicated hardware scalerDoes not consume any GPUHigher quality than bilinear upsampling在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Scaler Demo在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确XNA Framework API Cheat Sheet在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Su
23、mmaryGreat performance comes from great knowledgeUnderstandActionsValue types vs.reference typesGarbage collectionC#compiler magic(foreach,iterator methods,closures)Cost of the different graphical effect optionsUse CLR Profiler and.NET ReflectorRender smaller than display resolution,rely on scaler在整
24、堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确 2010 Microsoft Corporation.All rights reserved.Microsoft,Windows,Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S.and/or other countries.The information herein is for informational purposes onl
25、y and represents the current view of Microsoft Corporation as of the date of this presentation.Because Microsoft must respond to changing market conditions,it should not be interpreted to be a commitment on the part of Microsoft,and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation.MICROSOFT MAKES NO WARRANTIES,EXPRESS,IMPLIED OR STATUTORY,AS TO THE INFORMATION IN THIS PRESENTATION.在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确JUNE 7-10,2010|NEW ORLEANS,LARequired Slide