2 files changed, 64 insertions, 1 deletions
diff --git a/indra/llprimitive/llgltfmaterial.cpp b/indra/llprimitive/llgltfmaterial.cpp
index 9945c230a2..237636bd0b 100644
--- a/indra/llprimitive/llgltfmaterial.cpp
+++ b/indra/llprimitive/llgltfmaterial.cpp
@@ -89,6 +89,10 @@ LLGLTFMaterial& LLGLTFMaterial::operator=(const LLGLTFMaterial& rhs)
     mOverrideDoubleSided = rhs.mOverrideDoubleSided;
     mOverrideAlphaMode = rhs.mOverrideAlphaMode;
 
+    mTrackingIdToLocalTexture = rhs.mTrackingIdToLocalTexture;
+
+    updateTextureTracking();
+
     return *this;
 }
 
@@ -601,6 +605,10 @@ void LLGLTFMaterial::applyOverride(const LLGLTFMaterial& override_mat)
             mTextureTransform[i].mRotation = override_mat.mTextureTransform[i].mRotation;
         }
     }
+
+    mTrackingIdToLocalTexture.insert(override_mat.mTrackingIdToLocalTexture.begin(), override_mat.mTrackingIdToLocalTexture.begin());
+
+    updateTextureTracking();
 }
 
 void LLGLTFMaterial::getOverrideLLSD(const LLGLTFMaterial& override_mat, LLSD& data)
@@ -791,3 +799,47 @@ LLUUID LLGLTFMaterial::getHash() const
     return hash;
 }
 
+void LLGLTFMaterial::addLocalTextureTracking(const LLUUID& tracking_id, const LLUUID& tex_id)
+{
+    mTrackingIdToLocalTexture[tracking_id] = tex_id;
+}
+
+void LLGLTFMaterial::removeLocalTextureTracking(const LLUUID& tracking_id)
+{
+    mTrackingIdToLocalTexture.erase(tracking_id);
+}
+
+bool LLGLTFMaterial::replaceLocalTexture(const LLUUID& tracking_id, const LLUUID& old_id, const LLUUID& new_id)
+{
+    bool res = false;
+
+    for (int i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
+    {
+        if (mTextureId[i] == old_id)
+        {
+            mTextureId[i] = new_id;
+            res = true;
+        }
+        else if (mTextureId[i] == new_id)
+        {
+            res = true;
+        }
+    }
+
+    if (res)
+    {
+        mTrackingIdToLocalTexture[tracking_id] = new_id;
+    }
+    else
+    {
+        mTrackingIdToLocalTexture.erase(tracking_id);
+    }
+
+    return res;
+}
+
+void LLGLTFMaterial::updateTextureTracking()
+{
+    // setTEGLTFMaterialOverride is responsible for tracking
+    // for material overrides editor will set it
+}
diff --git a/indra/llprimitive/llgltfmaterial.h b/indra/llprimitive/llgltfmaterial.h
index 822a0aab22..02f62fb08c 100644
--- a/indra/llprimitive/llgltfmaterial.h
+++ b/indra/llprimitive/llgltfmaterial.h
@@ -196,7 +196,7 @@ public:
     // write to given tinygltf::Model
     void writeToModel(tinygltf::Model& model, S32 mat_index) const;
 
-    void applyOverride(const LLGLTFMaterial& override_mat);
+    virtual void applyOverride(const LLGLTFMaterial& override_mat);
     
     // apply the given LLSD override data
     void applyOverrideLLSD(const LLSD& data);
@@ -222,6 +222,17 @@ public:
     virtual void addTextureEntry(LLTextureEntry* te) {};
     virtual void removeTextureEntry(LLTextureEntry* te) {};
 
+    // For local textures so that editor will know to track changes
+    void addLocalTextureTracking(const LLUUID& tracking_id, const LLUUID &tex_id);
+    void removeLocalTextureTracking(const LLUUID& tracking_id);
+    bool hasLocalTextures() { return !mTrackingIdToLocalTexture.empty(); }
+    virtual bool replaceLocalTexture(const LLUUID& tracking_id, const LLUUID &old_id, const LLUUID& new_id);
+    virtual void updateTextureTracking();
+
+    // These fields are local to viewer and are a part of local bitmap support
+    typedef std::map<LLUUID, LLUUID> local_tex_map_t;
+    local_tex_map_t mTrackingIdToLocalTexture;
+
 protected:
     static LLVector2 vec2FromJson(const std::map<std::string, tinygltf::Value>& object, const char* key, const LLVector2& default_value);
     static F32 floatFromJson(const std::map<std::string, tinygltf::Value>& object, const char* key, const F32 default_value);