Panda3D
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Enables or disables writing of pixel to framebuffer based on its alpha value relative to a reference alpha value. More...
#include "alphaTestAttrib.h"
Public Member Functions | |
virtual TypeHandle | force_init_type () |
PandaCompareFunc | get_mode () const |
Returns the alpha write mode. | |
PN_stdfloat | get_reference_alpha () const |
Returns the alpha reference value. | |
virtual int | get_slot () const |
virtual TypeHandle | get_type () const |
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. | |
Static Public Member Functions | |
static | CPT (RenderAttrib) make(PandaCompareFunc 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 AlphaTestAttrib. | |
Public Attributes | |
static PN_stdfloat | reference_alpha |
Protected Member Functions | |
virtual int | compare_to_impl (const RenderAttrib *other) const |
Intended to be overridden by derived AlphaTestAttrib types to return a unique number indicating whether this AlphaTestAttrib is equivalent to the other one. | |
virtual | CPT (RenderAttrib) get_auto_shader_attrib_impl(const RenderState *state) const |
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 AlphaTestAttrib. | |
virtual size_t | get_hash_impl () const |
Intended to be overridden by derived RenderAttrib types to return a unique hash for these particular properties. | |
Static Protected Member Functions | |
static TypedWritable * | make_from_bam (const FactoryParams ¶ms) |
This function is called by the BamReader's factory when a new object of type AlphaTestAttrib is encountered in the Bam file. |
Enables or disables writing of pixel to framebuffer based on its alpha value relative to a reference alpha value.
Definition at line 28 of file alphaTestAttrib.h.
int AlphaTestAttrib::compare_to_impl | ( | const RenderAttrib * | other | ) | const [protected, virtual] |
Intended to be overridden by derived AlphaTestAttrib types to return a unique number indicating whether this AlphaTestAttrib is equivalent to the other one.
This should return 0 if the two AlphaTestAttrib 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 AlphaTestAttrib objects whose get_type() functions return the same.
Reimplemented from RenderAttrib.
Definition at line 78 of file alphaTestAttrib.cxx.
void AlphaTestAttrib::fillin | ( | DatagramIterator & | scan, |
BamReader * | manager | ||
) | [protected, virtual] |
This internal function is called by make_from_bam to read in all of the relevant data from the BamFile for the new AlphaTestAttrib.
Reimplemented from RenderAttrib.
Definition at line 174 of file alphaTestAttrib.cxx.
References DatagramIterator::get_int8(), and DatagramIterator::get_stdfloat().
Referenced by make_from_bam().
size_t AlphaTestAttrib::get_hash_impl | ( | ) | const [protected, virtual] |
Intended to be overridden by derived RenderAttrib types to return a unique hash for these particular properties.
RenderAttribs that compare the same with compare_to_impl(), above, should return the same hash; RenderAttribs that compare differently should return a different hash.
Reimplemented from RenderAttrib.
Definition at line 104 of file alphaTestAttrib.cxx.
References floating_point_hash< Key >::add_hash(), and integer_hash< Key, Compare >::add_hash().
AlphaTestAttrib::PandaCompareFunc AlphaTestAttrib::get_mode | ( | ) | const [inline] |
Returns the alpha write mode.
Definition at line 35 of file alphaTestAttrib.I.
Referenced by ShaderGenerator::analyze_renderstate(), and TinyGraphicsStateGuardian::begin_draw_primitives().
PN_stdfloat AlphaTestAttrib::get_reference_alpha | ( | ) | const [inline] |
Returns the alpha reference value.
Definition at line 45 of file alphaTestAttrib.I.
Referenced by TinyGraphicsStateGuardian::begin_draw_primitives().
TypedWritable * AlphaTestAttrib::make_from_bam | ( | const FactoryParams & | params | ) | [static, protected] |
This function is called by the BamReader's factory when a new object of type AlphaTestAttrib is encountered in the Bam file.
It should create the AlphaTestAttrib and extract its information from the file.
Definition at line 155 of file alphaTestAttrib.cxx.
References fillin().
Referenced by register_with_read_factory().
void AlphaTestAttrib::register_with_read_factory | ( | ) | [static] |
Tells the BamReader how to create objects of type AlphaTestAttrib.
Definition at line 128 of file alphaTestAttrib.cxx.
References BamReader::get_factory(), make_from_bam(), and Factory< Type >::register_factory().
Writes the contents of this object to the datagram for shipping out to a Bam file.
Reimplemented from RenderAttrib.
Definition at line 139 of file alphaTestAttrib.cxx.
References Datagram::add_int8(), and Datagram::add_stdfloat().