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00015 #ifndef PIPEOCCLUSIONCULLTRAVERSER_H
00016 #define PIPEOCCLUSIONCULLTRAVERSER_H
00017
00018 #include "pandabase.h"
00019 #include "cullTraverser.h"
00020 #include "graphicsOutput.h"
00021 #include "displayRegion.h"
00022 #include "cullHandler.h"
00023 #include "texture.h"
00024
00025 class GraphicsEngine;
00026 class GraphicsPipe;
00027 class GraphicsStateGuardian;
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00046
00047 class EXPCL_PANDA_GRUTIL PipeOcclusionCullTraverser : public CullTraverser,
00048 public CullHandler {
00049 PUBLISHED:
00050 PipeOcclusionCullTraverser(GraphicsOutput *host);
00051 PipeOcclusionCullTraverser(const PipeOcclusionCullTraverser ©);
00052
00053 virtual void set_scene(SceneSetup *scene_setup,
00054 GraphicsStateGuardianBase *gsg,
00055 bool dr_incomplete_render);
00056 virtual void end_traverse();
00057
00058 INLINE GraphicsOutput *get_buffer() const;
00059 Texture *get_texture();
00060
00061 INLINE void set_occlusion_mask(const DrawMask &occlusion_mask);
00062 INLINE const DrawMask &get_occlusion_mask() const;
00063
00064 protected:
00065 virtual bool is_in_view(CullTraverserData &data);
00066 virtual void traverse_below(CullTraverserData &data);
00067
00068 virtual void record_object(CullableObject *object,
00069 const CullTraverser *traverser);
00070
00071 private:
00072 void make_sphere();
00073 static LVertex compute_sphere_point(PN_stdfloat latitude, PN_stdfloat longitude);
00074 void make_box();
00075
00076 void make_solid_test_state();
00077
00078 bool get_volume_viz(const BoundingVolume *vol,
00079 CPT(Geom) &geom,
00080 CPT(TransformState) &net_transform,
00081 CPT(TransformState) &modelview_transform
00082 );
00083 PT(OcclusionQueryContext)
00084 perform_occlusion_test(const Geom *geom,
00085 const TransformState *net_transform,
00086 const TransformState *modelview_transform);
00087
00088 void show_results(int num_fragments, const Geom *geom,
00089 const TransformState *net_transform,
00090 const TransformState *modelview_transform);
00091 private:
00092 bool _live;
00093
00094 PT(GraphicsOutput) _buffer;
00095 PT(Texture) _texture;
00096 PT(DisplayRegion) _display_region;
00097 DrawMask _occlusion_mask;
00098
00099 PT(SceneSetup) _scene;
00100 PT(CullTraverser) _internal_trav;
00101
00102 CullHandler *_internal_cull_handler;
00103 CullHandler *_true_cull_handler;
00104
00105
00106
00107 PT(OcclusionQueryContext) _current_query;
00108
00109
00110 PT(OcclusionQueryContext) _next_query;
00111
00112 PT(Geom) _sphere_geom;
00113 PT(Geom) _box_geom;
00114 CPT(RenderState) _solid_test_state;
00115
00116 class PendingObject {
00117 public:
00118 INLINE PendingObject(CullableObject *object);
00119 INLINE ~PendingObject();
00120
00121 CullableObject *_object;
00122 PT(OcclusionQueryContext) _query;
00123 };
00124 typedef pvector<PendingObject> PendingObjects;
00125 PendingObjects _pending_objects;
00126
00127 static PStatCollector _setup_occlusion_pcollector;
00128 static PStatCollector _draw_occlusion_pcollector;
00129 static PStatCollector _test_occlusion_pcollector;
00130 static PStatCollector _finish_occlusion_pcollector;
00131
00132 static PStatCollector _occlusion_untested_pcollector;
00133 static PStatCollector _occlusion_passed_pcollector;
00134 static PStatCollector _occlusion_failed_pcollector;
00135 static PStatCollector _occlusion_tests_pcollector;
00136
00137 public:
00138 static TypeHandle get_class_type() {
00139 return _type_handle;
00140 }
00141 static void init_type() {
00142 CullTraverser::init_type();
00143 register_type(_type_handle, "PipeOcclusionCullTraverser",
00144 CullTraverser::get_class_type());
00145 }
00146 virtual TypeHandle get_type() const {
00147 return get_class_type();
00148 }
00149 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00150
00151 private:
00152 static TypeHandle _type_handle;
00153 };
00154
00155 #include "pipeOcclusionCullTraverser.I"
00156
00157 #endif
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