Merge pull request #448 from EvgeniiG/Unity-2017.3

Remove the code made redundant by exposing the texture hash

ScriptableRenderPipeline/Core/TextureCache.cs

     {
         protected int m_NumMipLevels;
 
-#if UNITY_EDITOR
-        static int s_TextureCacheIdGenerator = 0;
-        int m_TextureCacheId = 0;
-
-        static bool s_ForceReinjectGlobalFirst = false;
-        static bool s_ForceReinjectGlobalSecond = false;
-        static int s_GlobalSecondSetByTexCacheID = -1;
-        
-
-        // here we receive the in-editor updated textures. These must be reinjected into 
-        // any texture cache which has a stale copy of it. However, we don't have a this-pointer to the texture cache
-        // so instead we defer this to NewFrame() where we force reinject.
-        // Ideally we'd build up a list here of textures which are to be reinjected but unfortunately the texture we receive
-        // is an intermediate one and not the final compressed one. So instead we will have to reinject all in NewFrame().
-        internal class AssetReloader : UnityEditor.AssetPostprocessor
-        {
-            void OnPostprocessTexture(Texture texture)
-            {
-                s_ForceReinjectGlobalFirst = true;
-                s_ForceReinjectGlobalSecond = false;
-                s_GlobalSecondSetByTexCacheID = -1;
-            }
-        }
-#endif
-
         public static bool isMobileBuildTarget
         {
             get
 
             //for(int q=1; q<m_numTextures; q++)
             //    assert(m_SliceArray[m_SortedIdxArray[q-1]].CountLRU>=m_SliceArray[m_SortedIdxArray[q]].CountLRU);
-
-
-#if UNITY_EDITOR
-            // one or more textures got updated in editor. Unfortunately we do not know exactly which since
-            // OnPostprocessTexture() receives intermediate uncompressed textures. So we will have to reinject all slices to force an update.
-            if(s_ForceReinjectGlobalSecond && s_GlobalSecondSetByTexCacheID==m_TextureCacheId)
-            {
-                s_ForceReinjectGlobalSecond = false;
-                s_GlobalSecondSetByTexCacheID = -1;
-            }
-
-            if(s_ForceReinjectGlobalFirst)
-            {
-                s_ForceReinjectGlobalSecond = true;
-                s_GlobalSecondSetByTexCacheID = m_TextureCacheId;
-                s_ForceReinjectGlobalFirst = false;
-            }
-            
-            if(s_ForceReinjectGlobalSecond)
-            {
-                // all texture caches must loop through and force a reinject on all entries when this is true.
-                for(int i = 0; i < m_NumTextures; i++)
-                {
-                    var texID = m_SliceArray[i].texId;
-                    if(texID!=g_InvalidTexID)
-                    {
-                        Texture texture = (Texture) EditorUtility.InstanceIDToObject((int) texID);
-                        if(texture!=null) TransferToSlice(i, texture);
-                    }
-                }
-            }
-#endif
         }
 
         protected TextureCache()
-
-#if UNITY_EDITOR
-            m_TextureCacheId = s_TextureCacheIdGenerator;       // assign an ID so we can tell the caches apart
-            ++s_TextureCacheIdGenerator;        // static/global
-#endif
         }
 
         public virtual void TransferToSlice(int sliceIndex, Texture texture)