Cleanup: Remove unused variables from the bNode struct

In some cases the variables were set but never used anywhere.

Differential Revision: https://developer.blender.org/D9889

source/blender/blenkernel/intern/node.c

@@ -674,7 +674,6 @@ void ntreeBlendReadData(BlendDataReader *reader, bNodeTree *ntree)
   /* and we connect the rest */
   LISTBASE_FOREACH (bNode *, node, &ntree->nodes) {
     BLO_read_data_address(reader, &node->parent);
-    node->lasty = 0;
 
     LISTBASE_FOREACH (bNodeSocket *, sock, &node->inputs) {
       direct_link_node_socket(reader, sock);

source/blender/editors/space_node/drawnode.c

@@ -203,42 +203,6 @@ static void node_buts_normal(uiLayout *layout, bContext *UNUSED(C), PointerRNA *
   uiItemR(layout, &sockptr, "default_value", DEFAULT_FLAGS, "", ICON_NONE);
 }
 
-#if 0 /* not used in 2.5x yet */
-static void node_browse_tex_cb(bContext *C, void *ntree_v, void *node_v)
-{
-  Main *bmain = CTX_data_main(C);
-  bNodeTree *ntree = ntree_v;
-  bNode *node = node_v;
-  Tex *tex;
-
-  if (node->menunr < 1) {
-    return;
-  }
-
-  if (node->id) {
-    id_us_min(node->id);
-    node->id = NULL;
-  }
-  tex = BLI_findlink(&bmain->tex, node->menunr - 1);
-
-  node->id = &tex->id;
-  id_us_plus(node->id);
-  BLI_strncpy(node->name, node->id->name + 2, sizeof(node->name));
-
-  nodeSetActive(ntree, node);
-
-  if (ntree->type == NTREE_TEXTURE) {
-    ntreeTexCheckCyclics(ntree);
-  }
-
-  // allqueue(REDRAWBUTSSHADING, 0);
-  // allqueue(REDRAWNODE, 0);
-  NodeTagChanged(ntree, node);
-
-  node->menunr = 0;
-}
-#endif
-
 static void node_buts_texture(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
 {
   bNode *node = ptr->data;

source/blender/editors/space_node/node_draw.c

@@ -1620,7 +1620,6 @@ void node_draw_nodetree(const bContext *C,
     }
 
     bNodeInstanceKey key = BKE_node_instance_key(parent_key, ntree, node);
-    node->nr = a; /* index of node in list, used for exec event code */
     node_draw(C, region, snode, ntree, node, key);
   }
 
@@ -1643,7 +1642,6 @@ void node_draw_nodetree(const bContext *C,
     }
 
     bNodeInstanceKey key = BKE_node_instance_key(parent_key, ntree, node);
-    node->nr = a; /* index of node in list, used for exec event code */
     node_draw(C, region, snode, ntree, node, key);
   }
 }

source/blender/makesdna/DNA_node_types.h

@@ -218,15 +218,14 @@ typedef struct bNode {
   char name[64];
   int flag;
   short type;
-  char _pad[2];
   /** Both for dependency and sorting. */
   short done, level;
-  /** Lasty: check preview render status, menunr: browse ID blocks. */
-  short lasty, menunr;
-  /** For groupnode, offset in global caller stack. */
-  short stack_index;
-  /** Number of this node in list, used for UI exec events. */
-  short nr;
+
+  /** Used as a boolean for execution. */
+  uint8_t need_exec;
+
+  char _pad[1];
+
   /** Custom user-defined color. */
   float color[3];
 
@@ -264,10 +263,6 @@ typedef struct bNode {
   short custom1, custom2;
   float custom3, custom4;
 
-  /** Need_exec is set as UI execution event, exec is flag during exec. */
-  short need_exec, exec;
-  /** Optional extra storage for use in thread (read only then!). */
-  void *threaddata;
   /** Entire boundbox (worldspace). */
   rctf totr;
   /** Optional buttons area. */

source/blender/nodes/intern/node_exec.c

@@ -186,8 +186,6 @@ bNodeTreeExec *ntree_exec_begin(bNodeExecContext *context,
   for (n = 0; n < totnodes; n++) {
     node = nodelist[n];
 
-    node->stack_index = index;
-
     /* init node socket stack indexes */
     for (sock = node->inputs.first; sock; sock = sock->next) {
       node_init_input_index(sock, &index);