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3 Mathf.Sqrt(100f); (float)system.math.sqrt((double)100f);

4 Mathf.Sqrt(100f); (float)system.math.sqrt((double)100f);

5 Unity Editor(Mac) for Mono(AOT) IL2CPP // var sw = new System.Diagnostics.Stopwatch(); sw.start(); { long begin_time = sw.elapsedticks; for (var i = 0; i < ; ++i) { float f = Mathf.Sqrt(100f); } Debug.Log("elapsed:"+ (sw.elapsedticks - begin_time)); } { long begin_time = sw.elapsedticks; for (var i = 0; i < ; ++i) { float f = (float)system.math.sqrt((double)100f); } Debug.Log("elapsed:"+ (sw.elapsedticks - begin_time)); }

7 (Vector3) v += v1; v.x += v1.x; v.y += v1.y; v.z += v1.z;

8 (Vector3) v += v1; v.x += v1.x; v.y += v1.y; v.z += v1.z;

9 (Vector3) v += v1; v.x += v1.x; v.y += v1.y; v.z += v1.z; C# operator+= v = v + v1 bad-knowhow

10 mono

12 void func(vector3 a) { } void func(ref Vector a) { }.

13 void func(vector3 a) { } void func(ref Vector a) { }.

14 void set(ref Vector3 a) { m_position = a; } void set(ref Vector a) { m_position.x = a.x; m_position.y = a.y; m_position.z = a.z; }

15 void set(ref Vector3 a) { m_position = a; } void set(ref Vector a) { m_position.x = a.x; m_position.y = a.y; m_position.z = a.z; }

16 transform.position = Vector3.zero; transform.position = new Vector3(0f, 0f, 0f);

17 transform.position = Vector3.zero; transform.position = new Vector3(0f, 0f, 0f);

18 Class CV { public static Vector3 zero = Vector3.zero; } transform.position = CV.zero;

19 ref readonly Class CV { public static Vector3 zero = Vector3.zero; } transform.position = CV.zero; bad-knowhow

20 60fps

21 16.666ms

23 PlayStation Vita (PS Vita) 2011

24 PlayStation Vita (PS Vita)

25 PlayStation Vita (PS Vita) Unity 5.3.3p1

26 PlayStation Vita (PS Vita) Unity

27 Survival Shooter PS Vita Quality Settings Fastest Survival Shooter

28 Survival Shooter PS Vita Quality Settings Fastest Survival Shooter 12~13FPS!

32 1.

33 1. 2.GPU

34 1. 2.GPU 3.

35 1. PS Vita Main Thread

36 16.666ms ms ms Main Thread Render Thread GPU

37 16.666ms ms ms Main Thread Render Thread GPU

38 16.666ms ms ms Main Thread Render Thread GPU Main Thread

39 InputProcess( us) PlayerLoop InputManager::ProcessInput PhysicsManager::InitializeClass PhysicsManager::FixedUpdate( us) Physics2DState::Initialize Main Thread GUIManager::InitGUIManager InitializeNavMeshManager SpeedTreeWindManager::SpeedTreeWindManager(3.048us) BehaviourManager::Update(7.387ms) AudioModule::Update( us) PhysicsManager::InitializeClass()::PhysicsSkinnedClothUpdate(3.201us) ParticleSystem::InitializeClass()(1.673us) [local to EnlightenRuntimeManager_cpp]::UpdateEnlightenRuntimeManager(1.763us) SkinnedMeshRenderer::UpdateAllSkinnedMeshes(7.628us) DirectorManager::InitializeClass()::DirectorRenderImage(2.066us) UI::InitializeCanvasManager()::CanvasManagerEmitWorldGeometry(7.787us) UI::InitializeCanvasManager()::EmitScreenSpaceCameraGeometry(3.297us) PlayerRender(3.696ms) Camera::Cull( us) Camera::Render(26us) Camera::Render RenderManager::RenderOffscreenCamera RenderManager::RenderCameras Camera::Cull Camera::Render GfxDeviceContext::BeginFrame(wait for vsync) Camera::DoRender DoRenderLoop Unity::Component::SendMessageAny(here means OnPostRender:29.862us)

40 Main Thread ms V Blank

41 16.666ms

43 16.666ms ms V Blank

44 16.666ms ms ms Update Thread New! Main Thread Render Thread GPU

45 private void thread_entry() { for (;;) { // } } void Start() { update_thread_ = new Thread(thread_entry); update_thread_.start(); }

47 MainThread

48 MainThread

49 (MonoBehaviour) (Update )

50 (MonoBehaviour) (Update )

51 Unity API Main Thread Assert

52 Unity API Main Thread Assert

59 16.666ms ms V Blank

60 Update Thread ms update renderupdate

61 16.666ms update renderupdate Transform GPU

62 Update Thread & Main Thread ms ms update update renderupdate update renderupdate renderupdate render VSync

63 Update Thread & Main Thread ms ms update renderupdate update renderupdate render UnityAPI Transform setup Mesh update AudioSource.Play render VSync

66 DrawBuffer:16K+ Beam:54K+ Spark:60K+ Explosion:5K+ Hahen:48K+ Trail:96K+ Sprite:20K+ Sight:3K+ 1M

67 2.GPU

69 GPU Mesh.vertices MeshRenderer (DrawMesh )

70 vertices uv uv2

71 vertices uv uv2

72 Main Thread setup vertices uv uv2 Material up

73 vertices uv uv2

74 vertices uv uv2

75 Mesh.vertices (normals uv DrawMesh Mesh.vertices Main Thread Update

76 ParticleSystem Stretch Billboard

78 undocumented 5.4

79 3. struct

80 GC.Collect

81 mono heap class new

82 mono heap foreach mono heap IEnumerator class foreach LinkedList.Add LinkedListNode

83 mono heap Coroutine IEnumerator mono heap

84 mono heap MonoBehaviour public IEnumerator zako_act() { // } yield return null; for (var i =new Utility.WaitForSeconds(10f, time_);!i.end(time_);) { // yield return null; } destroy(); // public void init() { enumerator_ = zako_act(); } public void update() { enumerator_.movenext(); }

85 GC GC GC

86 4. tips

88 Update Thread Main Thread Render Thread GPU

89 update loop renderupdate loop MonoBehaviour.Update Update Thread Main Thread frame count GC count number of Objects

90 Main Thread ms V Blank

91 Main Thread ms ms ms ms ms V V V V

92 Main Thread ms ms ms ms ms V V V V V Blank

93 PS4, PS Vita ms ms ms ms ms PlayerRender V V V V PlayerRender V Blank

94 PS4, PS Vita ms ms ms ms ms PlayerRender V V V V OnPreCull OnPreRender

95 PS4, PS Vita ms ms ms ms ms V V V V OnPreRender OnPreCull OnPreRender OnPreCull

96 PC, ios, Android (PS Vita ms ms ms ms ms V V V V MonoBehaviour.Update OnPostRender MonoBehaviour.Update OnPostRender

97 Render Thread, GPU Unity Main Thread

98 GC.Collect

99 GC.Collect System.GC.Collection.Count(0 /* generation */)

100 Unity Unity

101

102 GC.Collect

103 Unity

104 : PS Vita Main Thread 12msec ms

105

106 : PS Vita

107 : PS4 Main Thread 2msec ms

108 Physx Physx

109 InputProcess( us) PlayerLoop InputManager::ProcessInput PhysicsManager::InitializeClass PhysicsManager::FixedUpdate( us) Physics2DState::Initialize GUIManager::InitGUIManager InitializeNavMeshManager SpeedTreeWindManager::SpeedTreeWindManager(3.048us) BehaviourManager::Update(7.387ms) AudioModule::Update( us) PhysicsManager::InitializeClass()::PhysicsSkinnedClothUpdate(3.201us) ParticleSystem::InitializeClass()(1.673us) [local to EnlightenRuntimeManager_cpp]::UpdateEnlightenRuntimeManager(1.763us) SkinnedMeshRenderer::UpdateAllSkinnedMeshes(7.628us) DirectorManager::InitializeClass()::DirectorRenderImage(2.066us) UI::InitializeCanvasManager()::CanvasManagerEmitWorldGeometry(7.787us) UI::InitializeCanvasManager()::EmitScreenSpaceCameraGeometry(3.297us) PlayerRender(3.696ms) Camera::Cull( us) Camera::Render(26us) Camera::Render RenderManager::RenderOffscreenCamera RenderManager::RenderCameras Camera::Cull Camera::Render GfxDeviceContext::BeginFrame(wait for vsync) Camera::DoRender DoRenderLoop Unity::Component::SendMessageAny(here means OnPostRender:29.862us)

110 InputProcess( us) PlayerLoop InputManager::ProcessInput PhysicsManager::InitializeClass PhysicsManager::FixedUpdate( us) Time Settings Fixed Tilmestep Physics2DState::Initialize GUIManager::InitGUIManager InitializeNavMeshManager SpeedTreeWindManager::SpeedTreeWindManager(3.048us) BehaviourManager::Update(7.387ms) AudioModule::Update( us) PhysicsManager::InitializeClass()::PhysicsSkinnedClothUpdate(3.201us) ParticleSystem::InitializeClass()(1.673us) [local to EnlightenRuntimeManager_cpp]::UpdateEnlightenRuntimeManager(1.763us) SkinnedMeshRenderer::UpdateAllSkinnedMeshes(7.628us) DirectorManager::InitializeClass()::DirectorRenderImage(2.066us) UI::InitializeCanvasManager()::CanvasManagerEmitWorldGeometry(7.787us) UI::InitializeCanvasManager()::EmitScreenSpaceCameraGeometry(3.297us) PlayerRender(3.696ms) Camera::Cull( us) Camera::Render(26us) Camera::Render RenderManager::RenderOffscreenCamera RenderManager::RenderCameras Camera::Cull Camera::Render GfxDeviceContext::BeginFrame(wait for vsync) Camera::DoRender DoRenderLoop Unity::Component::SendMessageAny(here means OnPostRender:29.862us)

111 Physx Time Settings Fixed TimeStep fps 30fps

112 InputProcess( us) PlayerLoop InputManager::ProcessInput PhysicsManager::InitializeClass PhysicsManager::FixedUpdate( us -> ns) Physics2DState::Initialize GUIManager::InitGUIManager InitializeNavMeshManager SpeedTreeWindManager::SpeedTreeWindManager(3.048us) BehaviourManager::Update(7.387ms) AudioModule::Update( us) PhysicsManager::InitializeClass()::PhysicsSkinnedClothUpdate(3.201us) ParticleSystem::InitializeClass()(1.673us) [local to EnlightenRuntimeManager_cpp]::UpdateEnlightenRuntimeManager(1.763us) SkinnedMeshRenderer::UpdateAllSkinnedMeshes(7.628us) DirectorManager::InitializeClass()::DirectorRenderImage(2.066us) UI::InitializeCanvasManager()::CanvasManagerEmitWorldGeometry(7.787us) UI::InitializeCanvasManager()::EmitScreenSpaceCameraGeometry(3.297us) PlayerRender(3.696ms) Camera::Cull( us) Camera::Render(26us) Camera::Render RenderManager::RenderOffscreenCamera RenderManager::RenderCameras Camera::Cull Camera::Render GfxDeviceContext::BeginFrame(wait for vsync) Camera::DoRender DoRenderLoop Unity::Component::SendMessageAny(here means OnPostRender:29.862us)

113 Camera::Cull system call Input VSync

114 InputProcess( us) PlayerLoop InputManager::ProcessInput PhysicsManager::InitializeClass PhysicsManager::FixedUpdate( us) Physics2DState::Initialize GUIManager::InitGUIManager InitializeNavMeshManager SpeedTreeWindManager::SpeedTreeWindManager(3.048us) BehaviourManager::Update(7.387ms) AudioModule::Update( us) PhysicsManager::InitializeClass()::PhysicsSkinnedClothUpdate(3.201us) ParticleSystem::InitializeClass()(1.673us) [local to EnlightenRuntimeManager_cpp]::UpdateEnlightenRuntimeManager(1.763us) SkinnedMeshRenderer::UpdateAllSkinnedMeshes(7.628us) DirectorManager::InitializeClass()::DirectorRenderImage(2.066us) UI::InitializeCanvasManager()::CanvasManagerEmitWorldGeometry(7.787us) UI::InitializeCanvasManager()::EmitScreenSpaceCameraGeometry(3.297us) PlayerRender(3.696ms) Camera::Cull( us) Camera::Render(26us) Camera::Render RenderManager::RenderOffscreenCamera RenderManager::RenderCameras Camera::Cull Camera::Render GfxDeviceContext::BeginFrame(wait for vsync) Camera::DoRender DoRenderLoop Unity::Component::SendMessageAny(here means OnPostRender:29.862us) ( SystemCall )

115 Camera::Cull Occlusion Culling Camera Occlusion Culling

116 AudioSource.PlayOneShot clip AudioClip AudioSource Play AudioSource FMOD MainThread AudioClip AudioSource FMOD

117

InputProcess(206.937us) PlayerLoop InputManager::ProcessInput PhysicsManager::InitializeClass PhysicsManager::FixedUpdate(785.

118 InputProcess( us) PlayerLoop InputManager::ProcessInput PhysicsManager::InitializeClass PhysicsManager::FixedUpdate( us) Physics2DState::Initialize GUIManager::InitGUIManager InitializeNavMeshManager SpeedTreeWindManager::SpeedTreeWindManager(3.048us) BehaviourManager::Update(7.387ms) AudioModule::Update(2.262ms-> us) PhysicsManager::InitializeClass()::PhysicsSkinnedClothUpdate(3.201us) ParticleSystem::InitializeClass()(1.673us) [local to EnlightenRuntimeManager_cpp]::UpdateEnlightenRuntimeManager(1.763us) SkinnedMeshRenderer::UpdateAllSkinnedMeshes(7.628us) DirectorManager::InitializeClass()::DirectorRenderImage(2.066us) UI::InitializeCanvasManager()::CanvasManagerEmitWorldGeometry(7.787us) UI::InitializeCanvasManager()::EmitScreenSpaceCameraGeometry(3.297us) PlayerRender(3.696ms) Camera::Cull( us) Camera::Render(26us) Camera::Render RenderManager::RenderOffscreenCamera RenderManager::RenderCameras Camera::Cull Camera::Render GfxDeviceContext::BeginFrame(wait for vsync) Camera::DoRender DoRenderLoop Unity::Component::SendMessageAny(here means OnPostRender:29.862us) ( SystemCall )

119 IL2CPP

120 Main Thread

121 IL2CPP update Δt

122

123 AnotherThread

Java (7) Lesson = (1) 1 m 3 /s m 2 5 m 2 4 m 2 1 m 3 m 1 m 0.5 m 3 /ms 0.3 m 3 /ms 0.6 m 3 /ms 1 1 3

Java (7) Lesson = (1) 1 m 3 /s m 2 5 m 2 4 m 2 1 m 3 m 1 m 0.5 m 3 /ms 0.3 m 3 /ms 0.6 m 3 /ms 1 1 3 Java (7) 2008-05-20 1 Lesson 5 1.1 5 3 = (1) 1 m 3 /s 1 2 3 10 m 2 5 m 2 4 m 2 1 m 3 m 1 m 0.5 m 3 /ms 0.3 m 3 /ms 0.6 m 3 /ms 1 1 3 1.2 java 2 1. 2. 3. 4. 3 2 1.3 i =1, 2, 3 V i (t) 1 t h i (t) i F, k