Bugfix #5147

Compositor: added a fixed (frame # based) seed in random, to ensure the
Texture node will give different results per frame.

source/blender/blenkernel/intern/node.c

@@ -47,6 +47,7 @@
 
 #include "BLI_arithb.h"
 #include "BLI_blenlib.h"
+#include "BLI_rand.h"
 #include "BLI_threads.h"
 
 #include "PIL_time.h"
@@ -2059,6 +2060,9 @@ void ntreeCompositExecTree(bNodeTree *ntree, RenderData *rd, int do_preview)
 	thdata.rd= rd;
 	thdata.stack= ntree->stack;
 	
+	/* fixed seed, for example noise texture */
+	BLI_srand(rd->cfra);
+	
 	/* sets need_exec tags in nodes */
 	totnode= setExecutableNodes(ntree, &thdata);