#include <depthOffsetAttrib.h>
Inheritance diagram for DepthOffsetAttrib:
Public Types | |
enum | PandaCompareFunc { M_none = 0, M_never, M_less, M_equal, M_less_equal, M_greater, M_not_equal, M_greater_equal, M_always } |
Public Member Functions | |
int | get_offset () const |
Returns the depth offset represented by this attrib. | |
virtual void | issue (GraphicsStateGuardianBase *gsg) const |
Calls the appropriate method on the indicated GSG to issue the graphics commands appropriate to the given attribute. | |
virtual void | output (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. | |
virtual TypeHandle | get_type () const |
virtual TypeHandle | force_init_type () |
ConstPointerTo< RenderAttrib > | compose (const RenderAttrib *other) const |
ConstPointerTo< RenderAttrib > | invert_compose (const RenderAttrib *other) const |
ConstPointerTo< RenderAttrib > | make_default () const |
int | compare_to (const RenderAttrib &other) const |
Provides an arbitrary ordering among all unique RenderAttribs, so we can store the essentially different ones in a big set and throw away the rest. | |
virtual void | write (ostream &out, int indent_level) const |
virtual void | finalize () |
Method to ensure that any necessary clean up tasks that have to be performed by this object are performed. | |
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(). | |
int | get_type_index () const |
Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. | |
bool | is_of_type (TypeHandle handle) const |
Returns true if the current object is or derives from the indicated type. | |
bool | is_exact_type (TypeHandle handle) const |
Returns true if the current object is the indicated type exactly. | |
int | get_ref_count () const |
Returns the current reference count. | |
int | ref () const |
Explicitly increments the reference count. | |
int | unref () const |
Explicitly decrements the reference count. | |
void | test_ref_count_integrity () const |
Does some easy checks to make sure that the reference count isn't completely bogus. | |
Static Public Member Functions | |
ConstPointerTo< RenderAttrib > | make (int offset=1) |
Constructs a new DepthOffsetAttrib object that indicates the relative amount of bias to write to the depth buffer for subsequent geometry. | |
void | register_with_read_factory () |
Tells the BamReader how to create objects of type DepthOffsetAttrib. | |
TypeHandle | get_class_type () |
void | init_type () |
TypedWritable * | change_this (TypedWritable *old_ptr, BamReader *manager) |
Called immediately after complete_pointers(), this gives the object a chance to adjust its own pointer if desired. | |
Static Public Attributes | |
TypedWritable *const | Null = (TypedWritable*)0L |
Protected Member Functions | |
virtual int | compare_to_impl (const RenderAttrib *other) const |
Intended to be overridden by derived DepthOffsetAttrib types to return a unique number indicating whether this DepthOffsetAttrib is equivalent to the other one. | |
virtual ConstPointerTo< RenderAttrib > | compose_impl (const RenderAttrib *other) const |
Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact. | |
virtual ConstPointerTo< RenderAttrib > | invert_compose_impl (const RenderAttrib *other) const |
Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact. | |
virtual RenderAttrib * | make_default_impl () const |
Intended to be overridden by derived DepthOffsetAttrib types to specify what the default property for a DepthOffsetAttrib of this type should be. | |
void | fillin (DatagramIterator &scan, BamReader *manager) |
This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new DepthOffsetAttrib. | |
void | output_comparefunc (ostream &out, PandaCompareFunc fn) const |
Static Protected Member Functions | |
TypedWritable * | make_from_bam (const FactoryParams ¶ms) |
This function is called by the BamReader's factory when a new object of type DepthOffsetAttrib is encountered in the Bam file. | |
ConstPointerTo< RenderAttrib > | return_new (RenderAttrib *attrib) |
This function is used by derived RenderAttrib types to share a common RenderAttrib pointer for all equivalent RenderAttrib objects. | |
TypedWritable * | new_from_bam (RenderAttrib *attrib, BamReader *manager) |
Private Member Functions | |
DepthOffsetAttrib (int offset) | |
Use DepthOffsetAttrib::make() to construct a new DepthOffsetAttrib object. | |
Private Attributes | |
int | _offset |
Static Private Attributes | |
TypeHandle | _type_handle |
This can be used to shift polygons forward slightly, to resolve depth conflicts. The cull traverser may optionally use this, for instance, to implement decals. However, driver support for this feature seems to be spotty, so use with caution.
The bias is always an integer number, and each integer increment represents the smallest possible increment in Z that is sufficient to completely resolve two coplanar polygons. Positive numbers are closer towards the camera.
Nested DepthOffsetAttrib values accumulate; that is, a DepthOffsetAttrib with a value of 1 beneath another DepthOffsetAttrib with a value of 2 presents a net offset of 3. (A DepthOffsetAttrib will not, however, combine with any other DepthOffsetAttribs with a lower override parameter.) The net value should probably not exceed 16 or drop below 0 for maximum portability.
Definition at line 85 of file depthOffsetAttrib.h.
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Definition at line 107 of file renderAttrib.h. Referenced by AlphaTestAttrib::AlphaTestAttrib(), DepthTestAttrib::DepthTestAttrib(), DXGraphicsStateGuardian8::enable_texturing(), GLGraphicsStateGuardian::issue_tex_matrix(), and GLGraphicsStateGuardian::issue_transform(). |
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Use DepthOffsetAttrib::make() to construct a new DepthOffsetAttrib object.
Definition at line 34 of file depthOffsetAttrib.I. References _offset, and INLINE. Referenced by invert_compose_impl(). |
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Called immediately after complete_pointers(), this gives the object a chance to adjust its own pointer if desired. Most objects don't change pointers after completion, but some need to. Once this function has been called, the old pointer will no longer be accessed. Definition at line 362 of file renderAttrib.cxx. |
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Provides an arbitrary ordering among all unique RenderAttribs, so we can store the essentially different ones in a big set and throw away the rest. This method is not needed outside of the RenderAttrib class because all equivalent RenderAttrib objects are guaranteed to share the same pointer; thus, a pointer comparison is always sufficient. Definition at line 125 of file renderAttrib.I. |
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Intended to be overridden by derived DepthOffsetAttrib types to return a unique number indicating whether this DepthOffsetAttrib is equivalent to the other one. This should return 0 if the two DepthOffsetAttrib objects are equivalent, a number less than zero if this one should be sorted before the other one, and a number greater than zero otherwise. This will only be called with two DepthOffsetAttrib objects whose get_type() functions return the same. Reimplemented from RenderAttrib. Definition at line 113 of file depthOffsetAttrib.cxx. |
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Receives an array of pointers, one for each time manager->read_pointer() was called in fillin(). Returns the number of pointers processed. This is the callback function that is made by the BamReader at some later point, after all of the required pointers have been filled in. It is necessary because there might be forward references in a bam file; when we call read_pointer() in fillin(), the object may not have been read from the file yet, so we do not have a pointer available at that time. Thus, instead of returning a pointer, read_pointer() simply reserves a later callback. This function provides that callback. The calling object is responsible for keeping track of the number of times it called read_pointer() and extracting the same number of pointers out of the supplied vector, and storing them appropriately within the object. Reimplemented in AnimBundleNode, AnimGroup, PartBundleNode, PartGroup, Character, CharacterJoint, CollisionNode, GeomSprite, PiecewiseCurve, ClipPlaneAttrib, FogAttrib, LensNode, LightAttrib, MaterialAttrib, RenderEffects, RenderState, TextureAttrib, Person, and Child. Definition at line 94 of file typedWritable.cxx. Referenced by RenderState::do_invert_compose(). |
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Referenced by LightAttrib::get_light(), LightAttrib::get_num_lights(), ClipPlaneAttrib::get_num_planes(), and ClipPlaneAttrib::get_plane(). |
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Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact. This should return the result of applying the other RenderAttrib to a node in the scene graph below this RenderAttrib, which was already applied. In most cases, the result is the same as the other RenderAttrib (that is, a subsequent RenderAttrib completely replaces the preceding one). On the other hand, some kinds of RenderAttrib (for instance, ColorTransformAttrib) might combine in meaningful ways. Reimplemented from RenderAttrib. Definition at line 152 of file depthOffsetAttrib.cxx. References get_class_type(), BamReader::get_factory(), make_from_bam(), and Factory< TypedWritable >::register_factory(). |
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This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new DepthOffsetAttrib.
Reimplemented from RenderAttrib. Definition at line 283 of file depthOffsetAttrib.cxx. Referenced by invert_compose_impl(). |
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Method to ensure that any necessary clean up tasks that have to be performed by this object are performed.
Reimplemented from TypedWritable. Definition at line 393 of file renderAttrib.cxx. |
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Reimplemented from RenderAttrib. Definition at line 127 of file depthOffsetAttrib.h. |
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Reimplemented from RenderAttrib. Definition at line 116 of file depthOffsetAttrib.h. Referenced by compose_impl(). |
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Returns the depth offset represented by this attrib.
Definition at line 48 of file depthOffsetAttrib.I. Referenced by DXGraphicsStateGuardian8::issue_material(), and GLGraphicsStateGuardian::issue_texture_apply(). |
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Returns the current reference count.
Definition at line 183 of file referenceCount.I. Referenced by RenderState::determine_bin_index(), RenderEffects::determine_show_bounds(), FontPool::ns_garbage_collect(), TexturePool::ns_garbage_collect(), MaterialPool::ns_get_material(), and TexturePool::ns_release_texture(). |
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Reimplemented from RenderAttrib. Definition at line 124 of file depthOffsetAttrib.h. |
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Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. This is equivalent to get_type().get_index(). Definition at line 71 of file typedObject.I. References TypeHandle::get_name(), TypedObject::get_type(), and INLINE. |
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Reimplemented from RenderAttrib. Definition at line 119 of file depthOffsetAttrib.h. |
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Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact. See invert_compose() and compose_impl(). Reimplemented from RenderAttrib. Definition at line 178 of file depthOffsetAttrib.cxx. References DepthOffsetAttrib(), fillin(), and parse_params(). |
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Returns true if the current object is the indicated type exactly.
Definition at line 101 of file typedObject.I. Referenced by PT(), and CollisionNode::xform(). |
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Calls the appropriate method on the indicated GSG to issue the graphics commands appropriate to the given attribute. This is normally called (indirectly) only from GraphicsStateGuardian::set_state() or modify_state(). Reimplemented from RenderAttrib. Definition at line 67 of file depthOffsetAttrib.cxx. |
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Constructs a new DepthOffsetAttrib object that indicates the relative amount of bias to write to the depth buffer for subsequent geometry.
Definition at line 45 of file depthOffsetAttrib.cxx. References GraphicsStateGuardianBase::issue_depth_offset(). Referenced by CullTraverser::get_bounds_outer_viz_state(). |
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Intended to be overridden by derived DepthOffsetAttrib types to specify what the default property for a DepthOffsetAttrib of this type should be. This should return a newly-allocated DepthOffsetAttrib of the same type that corresponds to whatever the standard default for this kind of DepthOffsetAttrib is. Implements RenderAttrib. Definition at line 208 of file depthOffsetAttrib.cxx. |
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This function is called by the BamReader's factory when a new object of type DepthOffsetAttrib is encountered in the Bam file. It should create the DepthOffsetAttrib and extract its information from the file. Definition at line 259 of file depthOffsetAttrib.cxx. Referenced by compose_impl(). |
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Reimplemented from RenderAttrib. Definition at line 80 of file depthOffsetAttrib.cxx. References _offset, and DCAST_INTO_R. |
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Definition at line 141 of file renderAttrib.cxx. References RenderAttrib::_attribs, RenderAttrib::_saved_entry, nassertr, and NULL. |
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Explicitly increments the reference count. User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically. This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it. The return value is the new reference count. Definition at line 225 of file referenceCount.I. Referenced by ClientDevice::ClientDevice(), EggGroupNode::find_textures(), EggGroupNode::r_apply_texmats(), EggGroupNode::r_flatten_transforms(), and EggGroupNode::reverse_vertex_ordering(). |
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Tells the BamReader how to create objects of type DepthOffsetAttrib.
Definition at line 223 of file depthOffsetAttrib.cxx. |
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This function is used by derived RenderAttrib types to share a common RenderAttrib pointer for all equivalent RenderAttrib objects. The make() function of the derived type should create a new RenderAttrib and pass it through return_new(), which will either save the pointer and return it unchanged (if this is the first similar such object) or delete it and return an equivalent pointer (if there was already a similar object saved). Definition at line 186 of file renderAttrib.cxx. Referenced by CullFaceAttrib::compare_to_impl(), TextureAttrib::make(), MaterialAttrib::make(), LightAttrib::make(), FogAttrib::make(), CullFaceAttrib::make(), ClipPlaneAttrib::make(), LightAttrib::make_all_off(), ClipPlaneAttrib::make_all_off(), ColorAttrib::make_flat(), and ColorAttrib::make_vertex(). |
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Does some easy checks to make sure that the reference count isn't completely bogus.
Definition at line 328 of file referenceCount.I. References INLINE. Referenced by EggNode::determine_bin(), and ReferenceCount::~ReferenceCount(). |
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Explicitly decrements the reference count. Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic; plus, we don't have a virtual destructor anyway.) However, see the helper function unref_delete(). User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically. This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it. The return value is the new reference count. Definition at line 293 of file referenceCount.I. References INLINE. Referenced by RenderState::determine_bin_index(), and RenderEffects::determine_show_bounds(). |
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Definition at line 155 of file renderAttrib.cxx. References RenderAttrib::_attribs. |
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Writes the contents of this object to the datagram for shipping out to a Bam file.
Reimplemented from RenderAttrib. Definition at line 238 of file depthOffsetAttrib.cxx. |
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Definition at line 105 of file depthOffsetAttrib.h. Referenced by DepthOffsetAttrib(), and output(). |
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Reimplemented from RenderAttrib. Definition at line 30 of file depthOffsetAttrib.cxx. |
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Definition at line 25 of file typedWritable.cxx. Referenced by Child::complete_pointers(), Parent::complete_pointers(), Person::complete_pointers(), LoaderFileTypeBam::get_extension(), PartGroup::pick_channel_index(), BamReader::read_pointer(), and AnimGroup::write_datagram(). |