Fix Model SDF texture streaming to properly mark highest loaded mip as resident

Source/Engine/Graphics/Async/Tasks/GPUUploadTextureMipTask.h

@@ -83,12 +83,16 @@ protected:
         auto texture = _texture.Get();
         if (texture)
         {
-            // Check if the new mips has been just uploaded
             if (_mipIndex == texture->HighestResidentMipIndex() - 1)
             {
-                // Mark as mip loaded
+                // Mark the new mip as loaded
                 texture->SetResidentMipLevels(texture->ResidentMipLevels() + 1);
             }
+            else
+            {
+                // Mark the new mip and all lower ones as loaded (eg. when loading Model SDF texture mips at once but out of order)
+                texture->SetResidentMipLevels(Math::Max(texture->ResidentMipLevels(), texture->MipLevels() - _mipIndex));
+            }
         }
 
         // Base