15 #include "alphaTestAttrib.h"
16 #include "graphicsStateGuardianBase.h"
18 #include "bamReader.h"
19 #include "bamWriter.h"
21 #include "datagramIterator.h"
24 int AlphaTestAttrib::_attrib_slot;
32 make(PandaCompareFunc mode, PN_stdfloat reference_value) {
33 assert((reference_value >=0.0f) && (reference_value <=1.0f));
35 return return_new(attrib);
55 void AlphaTestAttrib::
56 output(ostream &out)
const {
57 out << get_type() <<
":";
58 output_comparefunc(out,_mode);
59 out <<
"," << _reference_alpha;
80 DCAST_INTO_R(ta, other, 0);
81 int compare_result = ((int)_mode - (
int)ta->_mode) ;
82 if (compare_result != 0) {
83 return compare_result;
86 if (_reference_alpha != ta->_reference_alpha) {
87 return _reference_alpha < ta->_reference_alpha ? -1 : 1;
103 size_t AlphaTestAttrib::
104 get_hash_impl()
const {
117 get_auto_shader_attrib_impl(const
RenderState *state)
const {
127 void AlphaTestAttrib::
128 register_with_read_factory() {
160 parse_params(params, scan, manager);
161 attrib->fillin(scan, manager);
173 void AlphaTestAttrib::
175 RenderAttrib::fillin(scan, manager);
177 _mode = (PandaCompareFunc)scan.
get_int8();
PN_int8 get_int8()
Extracts a signed 8-bit integer.
PN_stdfloat get_stdfloat()
Extracts either a 32-bit or a 64-bit floating-point number, according to Datagram::set_stdfloat_doubl...
This is the base class for a number of render attributes (other than transform) that may be set on sc...
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
void add_int8(PN_int8 value)
Adds a signed 8-bit integer to the datagram.
Base class for objects that can be written to and read from Bam files.
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
void add_stdfloat(PN_stdfloat value)
Adds either a 32-bit or a 64-bit floating-point number, according to set_stdfloat_double().
static size_t add_hash(size_t start, const Key &key)
Adds the indicated key into a running hash.
This hash_compare class hashes a float or a double.
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
An instance of this class is passed to the Factory when requesting it to do its business and construc...
Enables or disables writing of pixel to framebuffer based on its alpha value relative to a reference ...
This represents a unique collection of RenderAttrib objects that correspond to a particular renderabl...
void register_factory(TypeHandle handle, CreateFunc *func)
Registers a new kind of thing the Factory will be able to create.
size_t add_hash(size_t start, const Key &key) const
Adds the indicated key into a running hash.
static WritableFactory * get_factory()
Returns the global WritableFactory for generating TypedWritable objects.
A class to retrieve the individual data elements previously stored in a Datagram. ...
TypeHandle is the identifier used to differentiate C++ class types.
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...