Quake 4 integrated with DoomRTX

neo/engine/renderer/Image.h

@@ -253,6 +253,7 @@ public:
 
 	idImage *			hashNext;				// for hash chains to speed lookup
 
+	int					useCount;
 	int					refCount;				// overall ref count
 };
 
@@ -262,6 +263,7 @@ ID_INLINE idImage::idImage() {
 	type = TT_DISABLED;
 	isPartialImage = false;
 	frameUsed = 0;
+	useCount = 0;
 	classification = 0;
 	backgroundLoadInProgress = false;
 	bgl.opcode = DLTYPE_FILE;