Add HoloLens 2 Getting-started Sample App (#184)

* Adding HoloLens2 Getting Started Sample App

* Adding Readme

* Updating Readme with basic instructions

* Updating WebView2 Package Version

* Update Unity Version to 2021.3.24f1

Author: michaelfarnsworth

GettingStartedGuides/HoloLens2_GettingStarted/HoloLens2GetStartedApp/.gitignore

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+# This .gitignore file should be placed at the root of your Unity project directory
+#
+# Get latest from https://github.com/github/gitignore/blob/main/Unity.gitignore
+#
+/[Ll]ibrary/
+/[Tt]emp/
+/[Oo]bj/
+/[Bb]uild/
+/[Bb]uilds/
+/[Ll]ogs/
+/[Uu]ser[Ss]ettings/
+
+
+# Ensure Packages folder included
+!/[Pp]ackages/
+
+# MemoryCaptures can get excessive in size.
+# They also could contain extremely sensitive data
+/[Mm]emoryCaptures/
+
+# Asset meta data should only be ignored when the corresponding asset is also ignored
+#!*/[Aa]ssets/**/*.meta
+
+# Recordings can get excessive in size
+/[Rr]ecordings/
+
+# Uncomment this line if you wish to ignore the asset store tools plugin
+/[Aa]ssets/AssetStoreTools*
+
+# Autogenerated Jetbrains Rider plugin
+/[Aa]ssets/Plugins/Editor/JetBrains*
+
+# Visual Studio cache directory
+.vs/
+
+# Gradle cache directory
+.gradle/
+
+# Autogenerated VS/MD/Consulo solution and project files
+ExportedObj/
+.consulo/
+*.csproj
+*.unityproj
+*.sln
+*.suo
+*.tmp
+*.user
+*.userprefs
+*.pidb
+*.booproj
+*.svd
+*.pfx
+*.pfx.meta
+*.pdb
+*.mdb
+*.opendb
+*.VC.db
+.vsconfig
+
+# Unity3D generated meta files
+*.pidb.meta
+*.pdb.meta
+*.mdb.meta
+
+# Unity3D generated file on crash reports
+sysinfo.txt
+
+# Builds
+*.apk
+*.aab
+*.unitypackage
+*.app
+
+# MRTK Packages
+/[Pp]ackages/[Mm]ixed[Rr]eality/
+
+# Crashlytics generated file
+crashlytics-build.properties
+
+# Packed Addressables
+/[Aa]ssets/[Aa]ddressable[Aa]ssets[Dd]ata/*/*.bin*
+
+# Temporary auto-generated Android Assets
+/[Aa]ssets/[Ss]treamingAssets/aa.meta
+/[Aa]ssets/[Ss]treamingAssets/aa/*
+
+/[Aa]ssets/MixedRealityToolkit.Generated*
+/[Aa]ssets/TextMesh Pro*

GettingStartedGuides/HoloLens2_GettingStarted/HoloLens2GetStartedApp/Assets/MRTK.meta

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+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+// NOTE: MRTK Shaders are versioned via the MRTK.Shaders.sentinel file.
+// When making changes to any shader's source file, the value in the sentinel _must_ be incremented.
+
+Shader "Hidden/ChannelPacker"
+{
+    Properties
+    {
+        _MetallicMap("Metallic Map", 2D) = "black" {}
+        _MetallicMapChannel("Metallic Map Channel", Int) = 0 // Red.
+        _MetallicUniform("Metallic Uniform", Float) = -0.01
+        _OcclusionMap("Occlusion Map", 2D) = "white" {}
+        _OcclusionMapChannel("Occlusion Map Channel", Int) = 1 // Green.
+        _OcclusionUniform("Occlusion Uniform", Float) = -0.01
+        _EmissionMap("Emission Map", 2D) = "black" {}
+        _EmissionMapChannel("Emission Map Channel", Int) = 4 // RGBAverage.
+        _EmissionUniform("Emission Uniform", Float) = -0.01
+        _SmoothnessMap("Smoothness Map", 2D) = "gray" {}
+        _SmoothnessMapChannel("Smoothness Map Channel", Int) = 3 // Alpha.
+        _SmoothnessUniform("Smoothness Uniform", Float) = -0.01
+    }
+    SubShader
+    {
+        Pass
+        {
+            CGPROGRAM
+
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #include "UnityCG.cginc"
+
+            struct appdata
+            {
+                float4 vertex : POSITION;
+                float2 uv : TEXCOORD0;
+            };
+
+            struct v2f
+            {
+                float4 vertex : SV_POSITION;
+                float2 uv : TEXCOORD0;
+            };
+
+            sampler2D _MetallicMap;
+            int _MetallicMapChannel;
+            float _MetallicUniform;
+            sampler2D _OcclusionMap;
+            int _OcclusionMapChannel;
+            float _OcclusionUniform;
+            sampler2D _EmissionMap;
+            int _EmissionMapChannel;
+            float _EmissionUniform;
+            sampler2D _SmoothnessMap;
+            int _SmoothnessMapChannel;
+            float _SmoothnessUniform;
+
+            v2f vert(appdata v)
+            {
+                v2f o;
+                o.vertex = UnityObjectToClipPos(v.vertex);
+                o.uv = v.uv;
+
+                return o;
+            }
+
+            fixed4 ToGrayScale(fixed4 color)
+            {
+                return color.r * 0.21 + color.g * 0.71 + color.b * 0.08;
+            }
+
+            fixed Sample(fixed4 color, int channel, float uniformValue)
+            {
+                if (uniformValue >= 0.0)
+                {
+                    return uniformValue;
+                }
+
+                if (channel == 4)
+                {
+                    return ToGrayScale(color);
+                }
+
+                return color[channel];
+            }
+
+            fixed4 frag(v2f i) : SV_Target
+            {
+                fixed4 output;
+
+                output.r = Sample(tex2D(_MetallicMap, i.uv), _MetallicMapChannel, _MetallicUniform);
+                output.g = Sample(tex2D(_OcclusionMap, i.uv), _OcclusionMapChannel, _OcclusionUniform);
+                output.b = Sample(tex2D(_EmissionMap, i.uv), _EmissionMapChannel, _EmissionUniform);
+                output.a = Sample(tex2D(_SmoothnessMap, i.uv), _SmoothnessMapChannel, _SmoothnessUniform);
+
+                return output;
+            }
+
+            ENDCG
+        }
+    }
+}

GettingStartedGuides/HoloLens2_GettingStarted/HoloLens2GetStartedApp/Assets/MRTK/Shaders.meta

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+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+// NOTE: MRTK Shaders are versioned via the MRTK.Shaders.sentinel file.
+// When making changes to any shader's source file, the value in the sentinel _must_ be incremented.
+
+Shader "Mixed Reality Toolkit/Depth Buffer Viewer"
+{
+    Properties
+    {
+        _DepthTex("Texture", 2D) = "black" {}
+        _MainTex("Base (RGB)", 2D) = "green" {}
+    }
+
+    SubShader
+    {
+        Pass
+        {
+        CGPROGRAM
+            #pragma vertex vert_img
+            #pragma fragment frag
+
+            #include "UnityCG.cginc"
+
+            uniform sampler2D _MainTex;
+            sampler2D _DepthTex;
+
+            float4 frag(v2f_img i) : COLOR
+            {
+                return Linear01Depth(SAMPLE_DEPTH_TEXTURE(_DepthTex, i.uv));
+            }
+        ENDCG
+        }
+    }
+}

GettingStartedGuides/HoloLens2_GettingStarted/HoloLens2GetStartedApp/Assets/MRTK/Shaders/ChannelPacker.shader

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+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+// NOTE: MRTK Shaders are versioned via the MRTK.Shaders.sentinel file.
+// When making changes to any shader's source file, the value in the sentinel _must_ be incremented.
+
+Shader "Hidden/Instanced-Colored"
+{
+    Properties
+    {
+        _Color("Color", Color) = (1.0, 1.0, 1.0, 1.0)
+        _ZWrite("ZWrite", Int) = 1.0 // On
+        [Enum(UnityEngine.Rendering.CompareFunction)] _ZTest("ZTest", Int) = 4.0 // LEqual
+        [Enum(UnityEngine.Rendering.CullMode)] _Cull("Cull", Int) = 0.0 // Off
+    }
+
+    SubShader
+    {
+        Pass
+        {
+            Name "Main"
+            Tags{ "RenderType" = "Opaque" }
+            ZWrite[_ZWrite]
+            ZTest[_ZTest]
+            Cull[_Cull]
+
+            CGPROGRAM
+
+            #pragma vertex vert
+            #pragma fragment frag
+
+            #pragma multi_compile_instancing
+
+            #include "UnityCG.cginc"
+
+            struct appdata_t
+            {
+                fixed4 vertex : POSITION;
+                UNITY_VERTEX_INPUT_INSTANCE_ID
+            };
+
+            struct v2f
+            {
+                fixed4 vertex : SV_POSITION;
+                fixed4 color : COLOR0;
+                UNITY_VERTEX_OUTPUT_STEREO
+            };
+
+            float4x4 _ParentLocalToWorldMatrix;
+
+            UNITY_INSTANCING_BUFFER_START(Props)
+            UNITY_DEFINE_INSTANCED_PROP(float4, _Color)
+            UNITY_INSTANCING_BUFFER_END(Props)
+
+            v2f vert(appdata_t v)
+            {
+                v2f o;
+                UNITY_SETUP_INSTANCE_ID(v);
+                UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
+                o.vertex = mul(UNITY_MATRIX_VP, mul(_ParentLocalToWorldMatrix, mul(unity_ObjectToWorld, float4(v.vertex.xyz, 1.0))));
+                o.color = UNITY_ACCESS_INSTANCED_PROP(Props, _Color);
+
+                return o;
+            }
+
+            fixed4 frag(v2f i) : SV_Target
+            {
+                return i.color;
+            }
+
+            ENDCG
+        }
+    }
+}