SL-18523: When editing an object's material override, use the object's material override as a base, rather than its render material

1 files changed, 11 insertions, 4 deletions

diff --git a/indra/newview/llmaterialeditor.cpp b/indra/newview/llmaterialeditor.cpp
index a0cb4e1c8f..70b165460a 100644
--- a/indra/newview/llmaterialeditor.cpp
+++ b/indra/newview/llmaterialeditor.cpp
@@ -2385,19 +2385,26 @@ public:
             // Selection can cover multiple objects, and live editor is
             // supposed to overwrite changed values only
             LLTextureEntry* tep = objectp->getTE(te);
-            LLPointer<LLGLTFMaterial> material = tep->getGLTFRenderMaterial();
 
-            if (material.isNull())
+            if (tep->getGLTFMaterial().isNull())
             {
                 // overrides are not supposed to work or apply if
                 // there is no base material to work from
                 return false;
             }
 
-
+            LLPointer<LLGLTFMaterial> material = tep->getGLTFMaterialOverride();
             // make a copy to not invalidate existing
             // material for multiple objects
-            material = new LLGLTFMaterial(*material);
+            if (material.isNull())
+            {
+                // Start with a material override which does not make any changes
+                material = new LLGLTFMaterial(LLGLTFMaterial::sOverrideDefault);
+            }
+            else
+            {
+                material = new LLGLTFMaterial(*material);
+            }
 
             U32 changed_flags = mEditor->getUnsavedChangesFlags();
             U32 reverted_flags = mEditor->getRevertedChangesFlags();