Merge pull request #49 from unity/CameraGrain

Camera Grain Sample Scene
4 年前 · 97c3af1a
--- a/README.md
+++ b/README.md

 ## AllPointCloudPoints

-This sample shows all feature points over time, not just the current frame's feature points as the "AR Default Point Cloud" prefab does. It does this by using a slightly modified version of the `ARPointCloudParticleVisualzier` component that stores all the feature points in a Dictionary. Since each feature point has a unique identifier, it can look up the stored point and update its position in the dictionary if it already exists. This can be a useful starting point for custom solutions that require the entire map of point cloud points, e.g., for custom mesh reconstruction techniques.
+This sample shows all feature points over time, not just the current frame's feature points as the "AR Default Point Cloud" prefab does. It does this by using a slightly modified version of the `ARPointCloudParticleVisualizer` component that stores all the feature points in a Dictionary. Since each feature point has a unique identifier, it can look up the stored point and update its position in the dictionary if it already exists. This can be a useful starting point for custom solutions that require the entire map of point cloud points, e.g., for custom mesh reconstruction techniques.
+
+## CameraGrain
+
+This sample demonstrates the camera grain effect. Once a plane is deteced, you can place a cube on it with a material that simulates the camera grain noise in the camera feed. See the `CameraGrain.cs` script. Also see  `CameraGrain.shader` which animates and applies the camera grain texture (through linear interpolation) in screenspace.
+
+This sample requires a device running iOS 13 and Unity 2020.2 or later.

 ## Meshing

 ### OcclusionMeshes

 At first, this scene may appear to be doing nothing. However, it is rendering a depth texture on top of the scene based on the real world geometry. This allows for the real world to occlude virtual content. The scene has a script on it that fires a red ball into the scene when you tap. You will see the occlusion working by firing the red balls into a space which you can then move the iPad camera behind some other real world object to see that the virtual red balls are occluded by the real world object.
+
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--- a/Assets/Scenes/CameraGrain/CameraGrain.shader
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+Shader "Custom/CameraGrain"
+{
+    Properties
+    {
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+
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+
+            float _NoiseIntensity;
+            float4 _NoiseSpeed;
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+
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+                float4 finalColor = lerp(mainColor, noiseColor, 0.25);
+                return finalColor;
+            }
+            ENDCG
+        }
+    }
+    FallBack "Diffuse"
+}
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--- a/Assets/Scenes/CameraGrain/CameraGrain.cs
+++ b/Assets/Scenes/CameraGrain/CameraGrain.cs
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.XR.ARFoundation;
+
+public class CameraGrain: MonoBehaviour
+{
+    [SerializeField]
+    ARCameraManager m_CameraManager;
+    public ARCameraManager cameraManager
+    {
+        get { return m_CameraManager; }
+        set { m_CameraManager = value; }
+    }
+
+    Renderer m_Renderer;
+
+    void Start()
+    {
+        if(m_CameraManager == null)
+        {
+            m_CameraManager = FindObjectOfType (typeof(ARCameraManager)) as ARCameraManager;
+        }
+
+        m_Renderer = GetComponent<Renderer>();
+        m_CameraManager.frameReceived += OnReceivedFrame;
+    }
+
+    void OnDisable()
+    {
+        m_CameraManager.frameReceived -= OnReceivedFrame;
+    }
+
+    void OnReceivedFrame(ARCameraFrameEventArgs eventArgs){
+        if(m_Renderer != null && eventArgs.cameraGrainTexture != null)
+        {
+            m_Renderer.material.SetTexture("_NoiseTex", eventArgs.cameraGrainTexture);
+            m_Renderer.material.SetFloat("_NoiseIntensity", eventArgs.noiseIntensity);
+        }
+    }
+}