add QuickRenderTraverser

panda/src/cull/cullTraverser.cxx

@@ -47,7 +47,7 @@ TypeHandle CullTraverser::_type_handle;
 
 #ifndef CPPPARSER
 PStatCollector CullTraverser::_cull_pcollector("Cull");
-PStatCollector CullTraverser::_draw_pcollector("Draw");
+PStatCollector CullTraverser::_draw_pcollector("Draw:Cull");
 PStatCollector CullTraverser::_cull_traverse_pcollector("Cull:Traverse");
 PStatCollector CullTraverser::_cull_geom_node_pcollector("Cull:Geom node");
 PStatCollector CullTraverser::_cull_direct_node_pcollector("Cull:Direct node");

panda/src/pgui/config_pgui.cxx

@@ -32,6 +32,28 @@ Configure(config_pgui);
 NotifyCategoryDef(pgui, "");
 
 ConfigureFn(config_pgui) {
+  init_libpgui();
+}
+
+const bool pgui_quick = config_pgui.GetBool("pgui-quick", false);
+
+
+////////////////////////////////////////////////////////////////////
+//     Function: init_libpgui
+//  Description: Initializes the library.  This must be called at
+//               least once before any of the functions or classes in
+//               this library can be used.  Normally it will be
+//               called by the static initializers and need not be
+//               called explicitly, but special cases exist.
+////////////////////////////////////////////////////////////////////
+void
+init_libpgui() {
+  static bool initialized = false;
+  if (initialized) {
+    return;
+  }
+  initialized = true;
+
   PGButton::init_type();
   PGEntry::init_type();
   PGMouseWatcherParameter::init_type();

panda/src/pgui/config_pgui.h

@@ -24,4 +24,9 @@
 
 NotifyCategoryDecl(pgui, EXPCL_PANDA, EXPTP_PANDA);
 
+// Configure variables for pgui package.
+extern const bool pgui_quick;
+
+extern EXPCL_PANDA void init_libpgui();
+
 #endif

panda/src/pgui/pgItem.cxx

@@ -19,6 +19,7 @@
 #include "pgTop.h"
 #include "pgItem.h"
 #include "pgMouseWatcherParameter.h"
+#include "config_pgui.h"
 
 #include "namedNode.h"
 #include "throw_event.h"
@@ -27,7 +28,9 @@
 #include "transformTransition.h"
 #include "sceneGraphReducer.h"
 #include "directRenderTraverser.h"
+#include "quickRenderTraverser.h"
 #include "allTransitionsWrapper.h"
+#include "graphicsStateGuardian.h"
 
 #ifdef HAVE_AUDIO
 #include "audioSound.h"
@@ -202,12 +205,18 @@ draw_item(PGTop *top, GraphicsStateGuardian *gsg,
     // This item has a current state definition that we should use
     // to render the item.
     Node *def = get_state_def(get_state());
-    
-    // We'll use a normal DirectRenderTraverser to do the rendering
-    // of the subgraph.
-    DirectRenderTraverser drt(gsg, RenderRelation::get_class_type());
-    drt.set_view_frustum_cull(false);
-    drt.traverse(def, attrib, AllTransitionsWrapper());
+
+    if (!pgui_quick) {
+      // We'll use a normal DirectRenderTraverser to do the rendering
+      // of the subgraph.
+      DirectRenderTraverser drt(gsg, RenderRelation::get_class_type());
+      drt.set_view_frustum_cull(false);
+      drt.traverse(def, attrib, AllTransitionsWrapper());
+
+    } else {
+      QuickRenderTraverser qrt(gsg, RenderRelation::get_class_type());
+      qrt.traverse(def, attrib, AllTransitionsWrapper());
+    }
   }
 }
 

panda/src/pstatclient/pStatProperties.cxx

@@ -121,6 +121,9 @@ static TimeCollectorProperties time_properties[] = {
   { 0, "Cull:Bins:Unsorted",               { 0.5, 0.5, 1.0 } },
   { 0, "Cull:Bins:Fixed",                  { 0.5, 1.0, 0.5 } },
   { 1, "Draw",                             { 1.0, 0.0, 0.0 },  1.0 / 30.0 },
+  { 1, "Draw:Quick",                       { 1.0, 0.0, 0.8 } },
+  { 1, "Draw:Direct",                      { 0.0, 0.4, 1.0 } },
+  { 1, "Draw:Cull",                        { 0.4, 1.0, 0.0 } },
   { 1, "Draw:Swap buffers",                { 0.5, 1.0, 0.8 } },
   { 1, "Draw:Clear",                       { 0.5, 0.7, 0.7 } },
   { 1, "Draw:Show fps",                    { 0.5, 0.8, 1.0 } },

panda/src/sgraphutil/Sources.pp

@@ -13,19 +13,25 @@
      appTraverser.I appTraverser.h config_sgraphutil.h  \
      directRenderTraverser.I directRenderTraverser.h  \
      frustumCullTraverser.I frustumCullTraverser.h get_rel_pos.I  \
-     get_rel_pos.h sceneGraphAnalyzer.h sceneGraphReducer.I  \
-     sceneGraphReducer.h
+     get_rel_pos.h \
+     quickRenderLevelState.h \
+     quickRenderTraverser.I quickRenderTraverser.h \
+     sceneGraphAnalyzer.h \
+     sceneGraphReducer.I sceneGraphReducer.h
 
   #define INCLUDED_SOURCES  \
      appTraverser.cxx config_sgraphutil.cxx directRenderTraverser.cxx  \
-     frustumCullTraverser.cxx get_rel_pos.cxx sceneGraphAnalyzer.cxx \
-     sceneGraphReducer.cxx
+     frustumCullTraverser.cxx get_rel_pos.cxx \
+     quickRenderTraverser.cxx \
+     sceneGraphAnalyzer.cxx sceneGraphReducer.cxx
 
   #define INSTALL_HEADERS \
     appTraverser.I appTraverser.h config_sgraphutil.h \
     directRenderLevelState.h directRenderTraverser.I \
     directRenderTraverser.h frustumCullTraverser.I \
     frustumCullTraverser.h get_rel_pos.I get_rel_pos.h \
+    quickRenderLevelState.h \
+    quickRenderTraverser.I quickRenderTraverser.h \
     sceneGraphAnalyzer.h sceneGraphReducer.I sceneGraphReducer.h
 
   #define IGATESCAN all

panda/src/sgraphutil/directRenderTraverser.cxx

@@ -45,7 +45,7 @@
 TypeHandle DirectRenderTraverser::_type_handle;
 
 #ifndef CPPPARSER
-PStatCollector DirectRenderTraverser::_draw_pcollector("Draw");
+PStatCollector DirectRenderTraverser::_draw_pcollector("Draw:Direct");
 #endif
 
 ////////////////////////////////////////////////////////////////////

panda/src/sgraphutil/quickRenderLevelState.h

@@ -0,0 +1,38 @@
+// Filename: quickRenderLevelState.h
+// Created by:  drose (24Jul01)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://www.panda3d.org/license.txt .
+//
+// To contact the maintainers of this program write to
+// panda3d@yahoogroups.com .
+//
+////////////////////////////////////////////////////////////////////
+
+#ifndef QUICKRENDERLEVELSTATE_H
+#define QUICKRENDERLEVELSTATE_H
+
+#include "pandabase.h"
+
+#include "updateSeq.h"
+
+////////////////////////////////////////////////////////////////////
+//       Class : QuickRenderLevelState
+// Description : This is the state information the
+//               QuickRenderTraverser retains for each level during
+//               traversal.
+////////////////////////////////////////////////////////////////////
+class EXPCL_PANDA QuickRenderLevelState {
+public:
+  UpdateSeq _as_of;
+};
+
+#endif
+

panda/src/sgraphutil/quickRenderTraverser.I

@@ -0,0 +1,30 @@
+// Filename: quickRenderTraverser.I
+// Created by:  drose (24Jul01)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://www.panda3d.org/license.txt .
+//
+// To contact the maintainers of this program write to
+// panda3d@yahoogroups.com .
+//
+////////////////////////////////////////////////////////////////////
+
+
+////////////////////////////////////////////////////////////////////
+//     Function: QuickRenderTraverser::backward_arc
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+INLINE void QuickRenderTraverser::
+backward_arc(NodeRelation *arc, NullTransitionWrapper &,
+             NullAttributeWrapper &, NullAttributeWrapper &,
+             const QuickRenderLevelState &) {
+  mark_backward_arc(arc);
+}

panda/src/sgraphutil/quickRenderTraverser.cxx

@@ -0,0 +1,167 @@
+// Filename: quickRenderTraverser.cxx
+// Created by:  drose (24Jul01)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://www.panda3d.org/license.txt .
+//
+// To contact the maintainers of this program write to
+// panda3d@yahoogroups.com .
+//
+////////////////////////////////////////////////////////////////////
+
+#include "quickRenderTraverser.h"
+#include "config_sgraphutil.h"
+
+#include "allAttributesWrapper.h"
+#include "allTransitionsWrapper.h"
+#include "graphicsStateGuardian.h"
+#include "dftraverser.h"
+#include "pruneTransition.h"
+#include "geomNode.h"
+#include "pStatTimer.h"
+
+TypeHandle QuickRenderTraverser::_type_handle;
+
+#ifndef CPPPARSER
+PStatCollector QuickRenderTraverser::_draw_pcollector("Draw:Quick");
+#endif
+
+////////////////////////////////////////////////////////////////////
+//     Function: QuickRenderTraverser::Constructor
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+QuickRenderTraverser::
+QuickRenderTraverser(GraphicsStateGuardian *gsg, TypeHandle graph_type,
+              const ArcChain &arc_chain) :
+  RenderTraverser(gsg, graph_type, arc_chain)
+{
+  _root = (Node *)NULL;
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: QuickRenderTraverser::Destructor
+//       Access: Public, Virtual
+//  Description:
+////////////////////////////////////////////////////////////////////
+QuickRenderTraverser::
+~QuickRenderTraverser() {
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: QuickRenderTraverser::traverse
+//       Access: Public, Virtual
+//  Description: This performs a normal, complete cull-and-render
+//               traversal using this QuickRenderTraverser object.  State is
+//               saved within the QuickRenderTraverser object so that the
+//               next frame will be processed much more quickly than
+//               the first frame.
+////////////////////////////////////////////////////////////////////
+void QuickRenderTraverser::
+traverse(Node *root,
+         const AllAttributesWrapper &initial_state,
+         const AllTransitionsWrapper &net_trans) {
+  // Statistics
+  PStatTimer timer(_draw_pcollector);
+
+  _root = root;
+  _initial_state.apply_from(initial_state, net_trans);
+
+  QuickRenderLevelState level_state;
+  level_state._as_of = UpdateSeq::initial();
+
+  df_traverse(root, *this,
+              NullAttributeWrapper(), level_state, _graph_type);
+
+  _root = (Node *)NULL;
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: QuickRenderTraverser::forward_arc
+//       Access: Public
+//  Description:
+////////////////////////////////////////////////////////////////////
+bool QuickRenderTraverser::
+forward_arc(NodeRelation *arc, NullTransitionWrapper &,
+            NullAttributeWrapper &, NullAttributeWrapper &,
+            QuickRenderLevelState &level_state) {
+  if (arc->has_transition(PruneTransition::get_class_type())) {
+    return false;
+  }
+
+  Node *node = arc->get_child();
+
+  if (node->get_num_parents(_graph_type) != 1) {
+    const UpRelationPointers &urp = node->find_connection(_graph_type).get_up();
+    int num_parents = urp.size();
+
+    sgraphutil_cat.warning()
+      << "Cannot support instancing via QuickRenderTraverser; "
+      << *node << " has " << num_parents << " parents.\n"
+      << "  parents are: ";
+    nassertr(num_parents > 1, false);
+
+    NodeRelation *parent_arc = urp[0];
+    sgraphutil_cat.warning(false) << *parent_arc->get_parent();
+    for (int i = 1; i < num_parents; i++) {
+      parent_arc = urp[i];
+      sgraphutil_cat.warning(false)
+        << ", " << *parent_arc->get_parent();
+    }
+    sgraphutil_cat.warning(false) << "\n";
+
+    return false;
+  }
+
+  if (implicit_app_traversal) {
+    node->app_traverse();
+  }
+  node->draw_traverse();
+
+  // We have to get a new _now timestamp, just in case either of the
+  // above traversals changed it.
+  UpdateSeq now = last_graph_update(_graph_type);
+
+  UpdateSeq last_update = arc->get_last_update();
+  if (level_state._as_of < last_update) {
+    level_state._as_of = last_update;
+  }
+
+  mark_forward_arc(arc);
+  _gsg->_nodes_pcollector.add_level(1);
+
+  if (node->is_of_type(GeomNode::get_class_type())) {
+    _gsg->_geom_nodes_pcollector.add_level(1);
+
+    // Determine the net transition to this GeomNode, and render it.
+    GeomNode *gnode = DCAST(GeomNode, node);
+    AllTransitionsWrapper trans;
+    Node *top_subtree = 
+      wrt_subtree(arc, NULL,
+                  level_state._as_of, now,
+                  trans, _graph_type);
+
+    /*
+    cerr << "top_subtree is " << (void *)top_subtree;
+    if (top_subtree != (Node *)NULL) {
+      cerr << " is " << *top_subtree;
+    }
+    cerr << "\n";
+    */
+
+    AllAttributesWrapper attrib;
+    attrib.apply_from(_initial_state, trans);
+
+    _gsg->set_state(attrib.get_attributes(), true);
+    gnode->draw(_gsg);
+  }
+
+  return true;
+}

panda/src/sgraphutil/quickRenderTraverser.h

@@ -0,0 +1,99 @@
+// Filename: quickRenderTraverser.h
+// Created by:  drose (24Jul01)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://www.panda3d.org/license.txt .
+//
+// To contact the maintainers of this program write to
+// panda3d@yahoogroups.com .
+//
+////////////////////////////////////////////////////////////////////
+
+#ifndef QUICKRENDERTRAVERSER_H
+#define QUICKRENDERTRAVERSER_H
+
+#include "pandabase.h"
+
+#include "quickRenderLevelState.h"
+
+#include "renderTraverser.h"
+#include "traverserVisitor.h"
+#include "nullTransitionWrapper.h"
+#include "nullAttributeWrapper.h"
+#include "allAttributesWrapper.h"
+#include "pStatCollector.h"
+
+class GraphicsStateGuardian;
+class AllTransitionsWrapper;
+
+////////////////////////////////////////////////////////////////////
+//       Class : QuickRenderTraverser
+// Description : A small RenderTraverser that performs a left-to-right
+//               depth-first traversal of the scene graph, rendering
+//               nodes as it encounters them, like a
+//               DirectRenderTraverser.
+//
+//               However, it does not support instancing, nor
+//               view-frustum culling.
+////////////////////////////////////////////////////////////////////
+class EXPCL_PANDA QuickRenderTraverser :
+  public RenderTraverser,
+  public TraverserVisitor<NullTransitionWrapper, QuickRenderLevelState> {
+public:
+  QuickRenderTraverser(GraphicsStateGuardian *gsg, TypeHandle graph_type,
+                       const ArcChain &arc_chain = ArcChain());
+  virtual ~QuickRenderTraverser();
+
+  virtual void traverse(Node *root,
+                        const AllAttributesWrapper &initial_state,
+                        const AllTransitionsWrapper &net_trans);
+
+public:
+  // These methods, from parent class TraverserVisitor, define the
+  // behavior of the RenderTraverser as it traverses the graph.
+  // Normally you would never call these directly.
+  bool forward_arc(NodeRelation *arc, NullTransitionWrapper &trans,
+                   NullAttributeWrapper &pre, NullAttributeWrapper &post,
+                   QuickRenderLevelState &level_state);
+
+  INLINE void
+  backward_arc(NodeRelation *arc, NullTransitionWrapper &trans,
+               NullAttributeWrapper &pre, NullAttributeWrapper &post,
+               const QuickRenderLevelState &level_state);
+
+private:
+  Node *_root;
+  AllAttributesWrapper _initial_state;
+
+  // Statistics
+  static PStatCollector _draw_pcollector;
+
+public:
+  static TypeHandle get_class_type() {
+    return _type_handle;
+  }
+  static void init_type() {
+    RenderTraverser::init_type();
+    register_type(_type_handle, "QuickRenderTraverser",
+                  RenderTraverser::get_class_type());
+  }
+  virtual TypeHandle get_type() const {
+    return get_class_type();
+  }
+  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
+
+private:
+  static TypeHandle _type_handle;
+};
+
+#include "quickRenderTraverser.I"
+
+#endif
+

panda/src/sgraphutil/sgraphutil_composite2.cxx

@@ -1,4 +1,5 @@
 
 #include "get_rel_pos.cxx"
+#include "quickRenderTraverser.cxx"
 #include "sceneGraphAnalyzer.cxx"
 #include "sceneGraphReducer.cxx"