160 lines
6.1 KiB
C++
160 lines
6.1 KiB
C++
// Filename: depthTestAttrib.cxx
|
|
// Created by: drose (04Mar02)
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// PANDA 3D SOFTWARE
|
|
// Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved
|
|
//
|
|
// All use of this software is subject to the terms of the Panda 3d
|
|
// Software license. You should have received a copy of this license
|
|
// along with this source code; you will also find a current copy of
|
|
// the license at http://www.panda3d.org/license.txt .
|
|
//
|
|
// To contact the maintainers of this program write to
|
|
// panda3d@yahoogroups.com .
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#include "depthTestAttrib.h"
|
|
#include "graphicsStateGuardianBase.h"
|
|
#include "dcast.h"
|
|
#include "bamReader.h"
|
|
#include "bamWriter.h"
|
|
#include "datagram.h"
|
|
#include "datagramIterator.h"
|
|
|
|
TypeHandle DepthTestAttrib::_type_handle;
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DepthTestAttrib::make
|
|
// Access: Published, Static
|
|
// Description: Constructs a new DepthTestAttrib object.
|
|
////////////////////////////////////////////////////////////////////
|
|
CPT(RenderAttrib) DepthTestAttrib::
|
|
make(DepthTestAttrib::PandaCompareFunc mode) {
|
|
DepthTestAttrib *attrib = new DepthTestAttrib(mode);
|
|
return return_new(attrib);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DepthTestAttrib::issue
|
|
// Access: Public, Virtual
|
|
// Description: 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().
|
|
////////////////////////////////////////////////////////////////////
|
|
void DepthTestAttrib::
|
|
issue(GraphicsStateGuardianBase *gsg) const {
|
|
gsg->issue_depth_test(this);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DepthTestAttrib::output
|
|
// Access: Public, Virtual
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
void DepthTestAttrib::
|
|
output(ostream &out) const {
|
|
out << get_type() << ":";
|
|
output_comparefunc(out,_mode);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DepthTestAttrib::compare_to_impl
|
|
// Access: Protected, Virtual
|
|
// Description: Intended to be overridden by derived DepthTestAttrib
|
|
// types to return a unique number indicating whether
|
|
// this DepthTestAttrib is equivalent to the other one.
|
|
//
|
|
// This should return 0 if the two DepthTestAttrib 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 DepthTestAttrib
|
|
// objects whose get_type() functions return the same.
|
|
////////////////////////////////////////////////////////////////////
|
|
int DepthTestAttrib::
|
|
compare_to_impl(const RenderAttrib *other) const {
|
|
const DepthTestAttrib *ta;
|
|
DCAST_INTO_R(ta, other, 0);
|
|
return (int)_mode - (int)ta->_mode;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DepthTestAttrib::make_default_impl
|
|
// Access: Protected, Virtual
|
|
// Description: Intended to be overridden by derived DepthTestAttrib
|
|
// types to specify what the default property for a
|
|
// DepthTestAttrib of this type should be.
|
|
//
|
|
// This should return a newly-allocated DepthTestAttrib of
|
|
// the same type that corresponds to whatever the
|
|
// standard default for this kind of DepthTestAttrib is.
|
|
////////////////////////////////////////////////////////////////////
|
|
RenderAttrib *DepthTestAttrib::
|
|
make_default_impl() const {
|
|
return new DepthTestAttrib;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DepthTestAttrib::register_with_read_factory
|
|
// Access: Public, Static
|
|
// Description: Tells the BamReader how to create objects of type
|
|
// DepthTestAttrib.
|
|
////////////////////////////////////////////////////////////////////
|
|
void DepthTestAttrib::
|
|
register_with_read_factory() {
|
|
BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DepthTestAttrib::write_datagram
|
|
// Access: Public, Virtual
|
|
// Description: Writes the contents of this object to the datagram
|
|
// for shipping out to a Bam file.
|
|
////////////////////////////////////////////////////////////////////
|
|
void DepthTestAttrib::
|
|
write_datagram(BamWriter *manager, Datagram &dg) {
|
|
RenderAttrib::write_datagram(manager, dg);
|
|
|
|
dg.add_int8(_mode);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DepthTestAttrib::make_from_bam
|
|
// Access: Protected, Static
|
|
// Description: This function is called by the BamReader's factory
|
|
// when a new object of type DepthTestAttrib is encountered
|
|
// in the Bam file. It should create the DepthTestAttrib
|
|
// and extract its information from the file.
|
|
////////////////////////////////////////////////////////////////////
|
|
TypedWritable *DepthTestAttrib::
|
|
make_from_bam(const FactoryParams ¶ms) {
|
|
DepthTestAttrib *attrib = new DepthTestAttrib;
|
|
DatagramIterator scan;
|
|
BamReader *manager;
|
|
|
|
parse_params(params, scan, manager);
|
|
attrib->fillin(scan, manager);
|
|
|
|
return attrib;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: DepthTestAttrib::fillin
|
|
// Access: Protected
|
|
// Description: This internal function is called by make_from_bam to
|
|
// read in all of the relevant data from the BamFile for
|
|
// the new DepthTestAttrib.
|
|
////////////////////////////////////////////////////////////////////
|
|
void DepthTestAttrib::
|
|
fillin(DatagramIterator &scan, BamReader *manager) {
|
|
RenderAttrib::fillin(scan, manager);
|
|
|
|
_mode = (PandaCompareFunc)scan.get_int8();
|
|
}
|