Panda3D
Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
TransparencyAttrib Class Reference

This controls the enabling of transparency. More...

#include "transparencyAttrib.h"

Inheritance diagram for TransparencyAttrib:
RenderAttrib TypedWritableReferenceCount TypedWritable ReferenceCount TypedObject MemoryBase MemoryBase

Public Types

enum  Mode {
  M_none = 0, M_alpha = 1, M_premultiplied_alpha, M_multisample,
  M_multisample_mask, M_binary, M_dual
}
 
- Public Types inherited from RenderAttrib
enum  PandaCompareFunc {
  M_none =0, M_never, M_less, M_equal,
  M_less_equal, M_greater, M_not_equal, M_greater_equal,
  M_always
}
 
enum  TexGenMode {
  M_off, M_eye_sphere_map, M_world_cube_map, M_eye_cube_map,
  M_world_normal, M_eye_normal, M_world_position, M_unused,
  M_eye_position, M_point_sprite, M_unused2, M_constant
}
 

Public Member Functions

virtual TypeHandle force_init_type ()
 
Mode get_mode () const
 
virtual int get_slot () const
 
virtual TypeHandle get_type () const
 
virtual void output (std::ostream &out) const
 
virtual void write_datagram (BamWriter *manager, Datagram &dg)
 Writes the contents of this object to the datagram for shipping out to a Bam file. More...
 
- Public Member Functions inherited from RenderAttrib
 RenderAttrib (const RenderAttrib &copy)=delete
 
virtual ~RenderAttrib ()
 The destructor is responsible for removing the RenderAttrib from the global set if it is there. More...
 
int compare_to (const RenderAttrib &other) const
 
 CPT (RenderAttrib) compose(const RenderAttrib *other) const
 
 CPT (RenderAttrib) invert_compose(const RenderAttrib *other) const
 
 CPT (RenderAttrib) get_unique() const
 
virtual bool cull_callback (CullTraverser *trav, const CullTraverserData &data) const
 If has_cull_callback() returns true, this function will be called during the cull traversal to perform any additional operations that should be performed at cull time. More...
 
virtual void finalize (BamReader *manager)
 Called by the BamReader to perform any final actions needed for setting up the object after all objects have been read and all pointers have been completed. More...
 
size_t get_hash () const
 
virtual bool has_cull_callback () const
 Should be overridden by derived classes to return true if cull_callback() has been defined. More...
 
virtual bool lower_attrib_can_override () const
 Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact. More...
 
RenderAttriboperator= (const RenderAttrib &copy)=delete
 
virtual bool unref () const final
 This method overrides ReferenceCount::unref() to clear the pointer from the global object pool when its reference count goes to zero. More...
 
virtual void write (std::ostream &out, int indent_level) const
 
- Public Member Functions inherited from TypedWritableReferenceCount
 TypedWritableReferenceCount (const TypedWritableReferenceCount &copy)
 
virtual ReferenceCountas_reference_count ()
 Returns the pointer cast to a ReferenceCount pointer, if it is in fact of that type. More...
 
void operator= (const TypedWritableReferenceCount &copy)
 
- Public Member Functions inherited from TypedWritable
 TypedWritable (const TypedWritable &copy)
 
virtual int complete_pointers (TypedWritable **p_list, BamReader *manager)
 Receives an array of pointers, one for each time manager->read_pointer() was called in fillin(). More...
 
vector_uchar encode_to_bam_stream () const
 Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a bytes object. More...
 
bool encode_to_bam_stream (vector_uchar &data, BamWriter *writer=nullptr) const
 Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. More...
 
UpdateSeq get_bam_modified () const
 Returns the current bam_modified counter. More...
 
void mark_bam_modified ()
 Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. More...
 
void operator= (const TypedWritable &copy)
 
virtual bool require_fully_complete () const
 Some objects require all of their nested pointers to have been completed before the objects themselves can be completed. More...
 
virtual void update_bam_nested (BamWriter *manager)
 Called by the BamWriter when this object has not itself been modified recently, but it should check its nested objects for updates. More...
 
- Public Member Functions inherited from TypedObject
 TypedObject (const TypedObject &copy)=default
 
TypedObjectas_typed_object ()
 Returns the object, upcast (if necessary) to a TypedObject pointer. More...
 
const TypedObjectas_typed_object () const
 Returns the object, upcast (if necessary) to a TypedObject pointer. More...
 
int get_best_parent_from_Set (const std::set< int > &) const
 
int get_type_index () const
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. More...
 
bool is_exact_type (TypeHandle handle) const
 Returns true if the current object is the indicated type exactly. More...
 
bool is_of_type (TypeHandle handle) const
 Returns true if the current object is or derives from the indicated type. More...
 
TypedObjectoperator= (const TypedObject &copy)=default
 
- Public Member Functions inherited from ReferenceCount
int get_ref_count () const
 
WeakReferenceListget_weak_list () const
 Returns the WeakReferenceList associated with this ReferenceCount object. More...
 
bool has_weak_list () const
 Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise. More...
 
void local_object ()
 This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack. More...
 
void ref () const
 Explicitly increments the reference count. More...
 
bool ref_if_nonzero () const
 Atomically increases the reference count of this object if it is not zero. More...
 
bool test_ref_count_integrity () const
 Does some easy checks to make sure that the reference count isn't completely bogus. More...
 
bool test_ref_count_nonzero () const
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More...
 
WeakReferenceListweak_ref ()
 Adds the indicated PointerToVoid as a weak reference to this object. More...
 
void weak_unref ()
 Removes the indicated PointerToVoid as a weak reference to this object. More...
 

Static Public Member Functions

static CPT (RenderAttrib) make(Mode mode)
 
static CPT (RenderAttrib) make_default()
 
static int get_class_slot ()
 
static TypeHandle get_class_type ()
 
static void init_type ()
 
static void register_with_read_factory ()
 Tells the BamReader how to create objects of type TransparencyAttrib. More...
 
- Static Public Member Functions inherited from RenderAttrib
static TypedWritablechange_this (TypedWritable *old_ptr, BamReader *manager)
 Called immediately after complete_pointers(), this gives the object a chance to adjust its own pointer if desired. More...
 
static int garbage_collect ()
 Performs a garbage-collection cycle. More...
 
static TypeHandle get_class_type ()
 
static int get_num_attribs ()
 Returns the total number of unique RenderAttrib objects allocated in the world. More...
 
static void init_attribs ()
 Make sure the global _attribs map is allocated. More...
 
static void init_type ()
 
static void list_attribs (std::ostream &out)
 Lists all of the RenderAttribs in the cache to the output stream, one per line. More...
 
static int register_slot (TypeHandle type_handle, int sort, RenderAttrib *default_attrib)
 Adds the indicated TypeHandle to the registry, if it is not there already, and returns a unique slot number. More...
 
static bool validate_attribs ()
 Ensures that the cache is still stored in sorted order. More...
 
- Static Public Member Functions inherited from TypedWritableReferenceCount
static TypeHandle get_class_type ()
 
static void init_type ()
 
static PT (TypedWritableReferenceCount) decode_from_bam_stream(vector_uchar data
 
- Static Public Member Functions inherited from TypedWritable
static bool decode_raw_from_bam_stream (TypedWritable *&ptr, ReferenceCount *&ref_ptr, vector_uchar data, BamReader *reader=nullptr)
 Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts the single object on those bytes. More...
 
static TypeHandle get_class_type ()
 
static void init_type ()
 
- Static Public Member Functions inherited from TypedObject
static TypeHandle get_class_type ()
 
static void init_type ()
 This function is declared non-inline to work around a compiler bug in g++ 2.96. More...
 
- Static Public Member Functions inherited from ReferenceCount
static TypeHandle get_class_type ()
 
static void init_type ()
 

Public Attributes

 get_class_slot
 
 get_mode
 Returns the transparency mode. More...
 
- Public Attributes inherited from RenderAttrib
 get_slot
 
- Public Attributes inherited from TypedWritableReferenceCount
static BamReaderreader = nullptr)
 
- Public Attributes inherited from TypedObject
 get_type
 
- Public Attributes inherited from ReferenceCount
 get_ref_count
 Returns the current reference count. More...
 

Additional Inherited Members

- Static Public Attributes inherited from TypedWritable
static TypedWritable *const Null = nullptr
 

Detailed Description

This controls the enabling of transparency.

Simply setting an alpha component to non-1 does not in itself make an object transparent; you must also enable transparency mode with a suitable TransparencyAttrib. Similarly, it is wasteful to render an object with a TransparencyAttrib in effect unless you actually want it to be at least partially transparent (and it has alpha components less than 1).

Definition at line 31 of file transparencyAttrib.h.

Member Function Documentation

◆ register_with_read_factory()

void TransparencyAttrib::register_with_read_factory ( )
static

Tells the BamReader how to create objects of type TransparencyAttrib.

Definition at line 116 of file transparencyAttrib.cxx.

References BamReader::get_factory(), and Factory< Type >::register_factory().

Referenced by init_libpgraph().

◆ write_datagram()

void TransparencyAttrib::write_datagram ( BamWriter manager,
Datagram dg 
)
virtual

Writes the contents of this object to the datagram for shipping out to a Bam file.

Reimplemented from RenderAttrib.

Definition at line 125 of file transparencyAttrib.cxx.

References Datagram::add_int8(), and RenderAttrib::write_datagram().

Member Data Documentation

◆ get_mode

TransparencyAttrib::Mode TransparencyAttrib::get_mode
inline

Returns the transparency mode.

Definition at line 54 of file transparencyAttrib.h.


The documentation for this class was generated from the following files: