modified maps

modified maps

Assets/NatureStarterKit2/Standard Assets/Effects/ImageEffects/Scripts/Blur.cs

@@ -0,0 +1,108 @@
+using System;
+using UnityEngine;
+
+namespace UnityStandardAssets.ImageEffects
+{
+    [ExecuteInEditMode]
+    [AddComponentMenu("Image Effects/Blur/Blur")]
+    public class Blur : MonoBehaviour
+    {
+        /// Blur iterations - larger number means more blur.
+        [Range(0,10)]
+        public int iterations = 3;
+
+        /// Blur spread for each iteration. Lower values
+        /// give better looking blur, but require more iterations to
+        /// get large blurs. Value is usually between 0.5 and 1.0.
+        [Range(0.0f,1.0f)]
+        public float blurSpread = 0.6f;
+
+
+        // --------------------------------------------------------
+        // The blur iteration shader.
+        // Basically it just takes 4 texture samples and averages them.
+        // By applying it repeatedly and spreading out sample locations
+        // we get a Gaussian blur approximation.
+
+        public Shader blurShader = null;
+
+        static Material m_Material = null;
+        protected Material material {
+            get {
+                if (m_Material == null) {
+                    m_Material = new Material(blurShader);
+                    m_Material.hideFlags = HideFlags.DontSave;
+                }
+                return m_Material;
+            }
+        }
+
+        protected void OnDisable() {
+            if ( m_Material ) {
+                DestroyImmediate( m_Material );
+            }
+        }
+
+        // --------------------------------------------------------
+
+        protected void Start()
+        {
+            // Disable if we don't support image effects
+            if (!SystemInfo.supportsImageEffects) {
+                enabled = false;
+                return;
+            }
+            // Disable if the shader can't run on the users graphics card
+            if (!blurShader || !material.shader.isSupported) {
+                enabled = false;
+                return;
+            }
+        }
+
+        // Performs one blur iteration.
+        public void FourTapCone (RenderTexture source, RenderTexture dest, int iteration)
+        {
+            float off = 0.5f + iteration*blurSpread;
+            Graphics.BlitMultiTap (source, dest, material,
+                                   new Vector2(-off, -off),
+                                   new Vector2(-off,  off),
+                                   new Vector2( off,  off),
+                                   new Vector2( off, -off)
+                );
+        }
+
+        // Downsamples the texture to a quarter resolution.
+        private void DownSample4x (RenderTexture source, RenderTexture dest)
+        {
+            float off = 1.0f;
+            Graphics.BlitMultiTap (source, dest, material,
+                                   new Vector2(-off, -off),
+                                   new Vector2(-off,  off),
+                                   new Vector2( off,  off),
+                                   new Vector2( off, -off)
+                );
+        }
+
+        // Called by the camera to apply the image effect
+        void OnRenderImage (RenderTexture source, RenderTexture destination) {
+            int rtW = source.width/4;
+            int rtH = source.height/4;
+            RenderTexture buffer = RenderTexture.GetTemporary(rtW, rtH, 0);
+
+            // Copy source to the 4x4 smaller texture.
+            DownSample4x (source, buffer);
+
+            // Blur the small texture
+            for(int i = 0; i < iterations; i++)
+            {
+                RenderTexture buffer2 = RenderTexture.GetTemporary(rtW, rtH, 0);
+                FourTapCone (buffer, buffer2, i);
+                RenderTexture.ReleaseTemporary(buffer);
+                buffer = buffer2;
+            }
+            Graphics.Blit(buffer, destination);
+
+            RenderTexture.ReleaseTemporary(buffer);
+        }
+    }
+}