459 lines
15 KiB
C++
459 lines
15 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file geom.h
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* @author drose
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* @date 2005-03-06
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*/
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#ifndef GEOM_H
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#define GEOM_H
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#include "pandabase.h"
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#include "copyOnWriteObject.h"
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#include "copyOnWritePointer.h"
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#include "cycleData.h"
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#include "cycleDataLockedReader.h"
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#include "cycleDataReader.h"
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#include "cycleDataWriter.h"
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#include "cycleDataStageReader.h"
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#include "cycleDataStageWriter.h"
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#include "pipelineCycler.h"
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#include "geomVertexData.h"
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#include "geomPrimitive.h"
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#include "geomMunger.h"
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#include "geomEnums.h"
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#include "geomCacheEntry.h"
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#include "textureStage.h"
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#include "updateSeq.h"
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#include "pointerTo.h"
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#include "indirectLess.h"
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#include "pset.h"
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#include "pmap.h"
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#include "boundingVolume.h"
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#include "pStatCollector.h"
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#include "deletedChain.h"
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#include "lightMutex.h"
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class GeomContext;
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class PreparedGraphicsObjects;
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/**
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* A container for geometry primitives. This class associates one or more
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* GeomPrimitive objects with a table of vertices defined by a GeomVertexData
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* object. All of the primitives stored in a particular Geom are drawn from
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* the same set of vertices (each primitive uses a subset of all of the
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* vertices in the table), and all of them must be rendered at the same time,
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* in the same graphics state.
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*/
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class EXPCL_PANDA_GOBJ Geom : public CopyOnWriteObject, public GeomEnums {
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protected:
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virtual PT(CopyOnWriteObject) make_cow_copy();
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PUBLISHED:
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explicit Geom(const GeomVertexData *data);
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protected:
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Geom(const Geom ©);
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PUBLISHED:
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void operator = (const Geom ©);
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virtual ~Geom();
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ALLOC_DELETED_CHAIN(Geom);
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virtual Geom *make_copy() const;
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INLINE PrimitiveType get_primitive_type() const;
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INLINE ShadeModel get_shade_model() const;
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INLINE int get_geom_rendering() const;
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MAKE_PROPERTY(primitive_type, get_primitive_type);
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MAKE_PROPERTY(shade_model, get_shade_model);
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MAKE_PROPERTY(geom_rendering, get_geom_rendering);
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UsageHint get_usage_hint() const;
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void set_usage_hint(UsageHint usage_hint);
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//MAKE_PROPERTY(usage_hint, get_usage_hint, set_usage_hint);
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INLINE CPT(GeomVertexData) get_vertex_data(Thread *current_thread = Thread::get_current_thread()) const;
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PT(GeomVertexData) modify_vertex_data();
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void set_vertex_data(const GeomVertexData *data);
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void offset_vertices(const GeomVertexData *data, int offset);
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int make_nonindexed(bool composite_only);
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CPT(GeomVertexData) get_animated_vertex_data(bool force, Thread *current_thread) const;
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INLINE bool is_empty() const;
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INLINE size_t get_num_primitives() const;
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INLINE CPT(GeomPrimitive) get_primitive(size_t i) const;
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MAKE_SEQ(get_primitives, get_num_primitives, get_primitive);
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INLINE PT(GeomPrimitive) modify_primitive(size_t i);
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void set_primitive(size_t i, const GeomPrimitive *primitive);
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void insert_primitive(size_t i, const GeomPrimitive *primitive);
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INLINE void add_primitive(const GeomPrimitive *primitive);
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void remove_primitive(size_t i);
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void clear_primitives();
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MAKE_SEQ_PROPERTY(primitives, get_num_primitives, get_primitive, set_primitive, remove_primitive, insert_primitive);
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INLINE PT(Geom) decompose() const;
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INLINE PT(Geom) doubleside() const;
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INLINE PT(Geom) reverse() const;
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INLINE PT(Geom) rotate() const;
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INLINE PT(Geom) unify(int max_indices, bool preserve_order) const;
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INLINE PT(Geom) make_points() const;
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INLINE PT(Geom) make_lines() const;
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INLINE PT(Geom) make_patches() const;
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INLINE PT(Geom) make_adjacency() const;
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void decompose_in_place();
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void doubleside_in_place();
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void reverse_in_place();
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void rotate_in_place();
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void unify_in_place(int max_indices, bool preserve_order);
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void make_points_in_place();
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void make_lines_in_place();
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void make_patches_in_place();
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void make_adjacency_in_place();
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virtual bool copy_primitives_from(const Geom *other);
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int get_num_bytes() const;
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INLINE UpdateSeq get_modified(Thread *current_thread = Thread::get_current_thread()) const;
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MAKE_PROPERTY(num_bytes, get_num_bytes);
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MAKE_PROPERTY(modified, get_modified);
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bool request_resident() const;
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void transform_vertices(const LMatrix4 &mat);
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bool check_valid() const;
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bool check_valid(const GeomVertexData *vertex_data) const;
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CPT(BoundingVolume) get_bounds(Thread *current_thread = Thread::get_current_thread()) const;
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int get_nested_vertices(Thread *current_thread = Thread::get_current_thread()) const;
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INLINE void mark_bounds_stale() const;
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INLINE void set_bounds_type(BoundingVolume::BoundsType bounds_type);
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INLINE BoundingVolume::BoundsType get_bounds_type() const;
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INLINE void set_bounds(const BoundingVolume *volume);
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INLINE void clear_bounds();
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MAKE_PROPERTY(bounds_type, get_bounds_type, set_bounds_type);
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virtual void output(std::ostream &out) const;
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virtual void write(std::ostream &out, int indent_level = 0) const;
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void clear_cache();
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void clear_cache_stage(Thread *current_thread);
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void prepare(PreparedGraphicsObjects *prepared_objects);
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bool is_prepared(PreparedGraphicsObjects *prepared_objects) const;
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bool release(PreparedGraphicsObjects *prepared_objects);
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int release_all();
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GeomContext *prepare_now(PreparedGraphicsObjects *prepared_objects,
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GraphicsStateGuardianBase *gsg);
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public:
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bool draw(GraphicsStateGuardianBase *gsg,
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const GeomVertexData *vertex_data,
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bool force, Thread *current_thread) const;
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INLINE void calc_tight_bounds(LPoint3 &min_point, LPoint3 &max_point,
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bool &found_any,
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const GeomVertexData *vertex_data,
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bool got_mat, const LMatrix4 &mat,
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Thread *current_thread) const;
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INLINE void calc_tight_bounds(LPoint3 &min_point, LPoint3 &max_point,
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bool &found_any, Thread *current_thread) const;
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INLINE void calc_tight_bounds(LPoint3 &min_point, LPoint3 &max_point,
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bool &found_any,
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const GeomVertexData *vertex_data,
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bool got_mat, const LMatrix4 &mat,
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const InternalName *column_name,
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Thread *current_thread) const;
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static UpdateSeq get_next_modified();
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private:
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class CData;
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INLINE void mark_internal_bounds_stale(CData *cdata);
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void compute_internal_bounds(CData *cdata, Thread *current_thread) const;
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void do_calc_tight_bounds(LPoint3 &min_point, LPoint3 &max_point,
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PN_stdfloat &sq_center_dist, bool &found_any,
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const GeomVertexData *vertex_data,
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bool got_mat, const LMatrix4 &mat,
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const InternalName *column_name,
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const CData *cdata, Thread *current_thread) const;
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void do_calc_sphere_radius(const LPoint3 ¢er,
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PN_stdfloat &sq_radius, bool &found_any,
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const GeomVertexData *vertex_data,
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const CData *cdata, Thread *current_thread) const;
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void clear_prepared(PreparedGraphicsObjects *prepared_objects);
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bool check_will_be_valid(const GeomVertexData *vertex_data) const;
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void reset_geom_rendering(CData *cdata);
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void combine_primitives(GeomPrimitive *a_prim, CPT(GeomPrimitive) b_prim,
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Thread *current_thread);
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private:
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typedef pvector<COWPT(GeomPrimitive) > Primitives;
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// We have to use reference-counting pointers here instead of having
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// explicit cleanup in the GeomVertexFormat destructor, because the cache
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// needs to be stored in the CycleData, which makes accurate cleanup more
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// difficult. We use the GeomCacheManager class to avoid cache bloat.
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// Note: the above comment is no longer true. The cache is not stored in
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// the CycleData, which just causes problems; instead, we cycle each
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// individual CacheEntry as needed. Need to investigate if we could
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// simplify the cache system now.
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// The pipelined data with each CacheEntry.
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class EXPCL_PANDA_GOBJ CDataCache : public CycleData {
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public:
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INLINE CDataCache();
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INLINE CDataCache(const CDataCache ©);
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virtual ~CDataCache();
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ALLOC_DELETED_CHAIN(CDataCache);
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virtual CycleData *make_copy() const;
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virtual TypeHandle get_parent_type() const {
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return Geom::get_class_type();
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}
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INLINE void set_result(const Geom *geom_result, const GeomVertexData *data_result);
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Geom *_source; // A back pointer to the containing Geom
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const Geom *_geom_result; // ref-counted if not NULL and not same as _source
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CPT(GeomVertexData) _data_result;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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register_type(_type_handle, "Geom::CDataCache");
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}
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private:
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static TypeHandle _type_handle;
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};
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typedef CycleDataReader<CDataCache> CDCacheReader;
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typedef CycleDataWriter<CDataCache> CDCacheWriter;
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public:
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// The CacheKey class separates out just the part of CacheEntry that is used
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// to key the cache entry within the map. We have this as a separate class
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// so we can easily look up a new entry in the map, without having to
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// execute the relatively expensive CacheEntry constructor.
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class CacheKey {
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public:
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INLINE CacheKey(const GeomVertexData *source_data,
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const GeomMunger *modifier);
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INLINE CacheKey(const CacheKey ©);
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INLINE CacheKey(CacheKey &&from) noexcept;
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INLINE bool operator < (const CacheKey &other) const;
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CPT(GeomVertexData) _source_data;
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CPT(GeomMunger) _modifier;
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};
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// It is not clear why MSVC7 needs this class to be public.
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class CacheEntry : public GeomCacheEntry {
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public:
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INLINE CacheEntry(Geom *source,
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const GeomVertexData *source_data,
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const GeomMunger *modifier);
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INLINE CacheEntry(Geom *source, const CacheKey &key);
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INLINE CacheEntry(Geom *source, CacheKey &&key) noexcept;
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ALLOC_DELETED_CHAIN(CacheEntry);
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virtual void evict_callback();
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virtual void output(std::ostream &out) const;
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Geom *_source; // A back pointer to the containing Geom
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CacheKey _key;
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PipelineCycler<CDataCache> _cycler;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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GeomCacheEntry::init_type();
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register_type(_type_handle, "Geom::CacheEntry",
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GeomCacheEntry::get_class_type());
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}
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private:
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static TypeHandle _type_handle;
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};
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typedef pmap<const CacheKey *, PT(CacheEntry), IndirectLess<CacheKey> > Cache;
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private:
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// This is the data that must be cycled between pipeline stages.
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class EXPCL_PANDA_GOBJ CData : public CycleData {
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public:
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INLINE CData();
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INLINE CData(GeomVertexData *data);
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ALLOC_DELETED_CHAIN(CData);
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virtual CycleData *make_copy() const;
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virtual void write_datagram(BamWriter *manager, Datagram &dg) const;
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virtual int complete_pointers(TypedWritable **plist, BamReader *manager);
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virtual void fillin(DatagramIterator &scan, BamReader *manager);
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virtual TypeHandle get_parent_type() const {
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return Geom::get_class_type();
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}
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COWPT(GeomVertexData) _data;
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Primitives _primitives;
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PrimitiveType _primitive_type;
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ShadeModel _shade_model;
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int _geom_rendering;
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UpdateSeq _modified;
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CPT(BoundingVolume) _internal_bounds;
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int _nested_vertices;
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bool _internal_bounds_stale;
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BoundingVolume::BoundsType _bounds_type;
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CPT(BoundingVolume) _user_bounds;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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register_type(_type_handle, "Geom::CData");
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}
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private:
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static TypeHandle _type_handle;
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};
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PipelineCycler<CData> _cycler;
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typedef CycleDataLockedReader<CData> CDLockedReader;
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typedef CycleDataReader<CData> CDReader;
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typedef CycleDataWriter<CData> CDWriter;
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typedef CycleDataStageReader<CData> CDStageReader;
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typedef CycleDataStageWriter<CData> CDStageWriter;
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Cache _cache;
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LightMutex _cache_lock;
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// This works just like the Texture contexts: each Geom keeps a record of
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// all the PGO objects that hold the Geom, and vice-versa.
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typedef pmap<PreparedGraphicsObjects *, GeomContext *> Contexts;
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Contexts _contexts;
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static UpdateSeq _next_modified;
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static PStatCollector _draw_primitive_setup_pcollector;
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public:
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static void register_with_read_factory();
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virtual void write_datagram(BamWriter *manager, Datagram &dg);
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virtual void finalize(BamReader *manager);
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protected:
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static TypedWritable *make_from_bam(const FactoryParams ¶ms);
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void fillin(DatagramIterator &scan, BamReader *manager);
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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CopyOnWriteObject::init_type();
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register_type(_type_handle, "Geom",
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CopyOnWriteObject::get_class_type());
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CDataCache::init_type();
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CacheEntry::init_type();
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CData::init_type();
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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friend class CacheEntry;
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friend class GeomMunger;
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friend class GeomContext;
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friend class GeomPipelineReader;
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friend class PreparedGraphicsObjects;
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};
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/**
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* Encapsulates the data from a Geom, pre-fetched for one stage of the
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* pipeline.
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*
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* Does not hold a reference to the Geom. The caller must ensure that the
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* Geom persists for at least the lifetime of the GeomPipelineReader.
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*/
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class EXPCL_PANDA_GOBJ GeomPipelineReader : public GeomEnums {
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public:
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INLINE GeomPipelineReader(Thread *current_thread);
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INLINE GeomPipelineReader(const Geom *object, Thread *current_thread);
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GeomPipelineReader(const GeomPipelineReader ©) = delete;
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INLINE ~GeomPipelineReader();
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ALLOC_DELETED_CHAIN(GeomPipelineReader);
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GeomPipelineReader &operator = (const GeomPipelineReader ©) = delete;
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INLINE void set_object(const Geom *object);
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INLINE const Geom *get_object() const;
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INLINE Thread *get_current_thread() const;
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INLINE PrimitiveType get_primitive_type() const;
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INLINE ShadeModel get_shade_model() const;
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INLINE int get_geom_rendering() const;
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INLINE CPT(GeomVertexData) get_vertex_data() const;
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INLINE int get_num_primitives() const;
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INLINE CPT(GeomPrimitive) get_primitive(int i) const;
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INLINE UpdateSeq get_modified() const;
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bool check_valid(const GeomVertexDataPipelineReader *data_reader) const;
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INLINE GeomContext *prepare_now(PreparedGraphicsObjects *prepared_objects,
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GraphicsStateGuardianBase *gsg) const;
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bool draw(GraphicsStateGuardianBase *gsg,
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const GeomVertexDataPipelineReader *data_reader,
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bool force) const;
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private:
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const Geom *_object;
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Thread *_current_thread;
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const Geom::CData *_cdata;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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register_type(_type_handle, "GeomPipelineReader");
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}
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private:
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static TypeHandle _type_handle;
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};
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INLINE std::ostream &operator << (std::ostream &out, const Geom &obj);
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#include "geom.I"
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#endif
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