93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file alphaTestAttrib.h
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* @author drose
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* @date 2002-03-04
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*/
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#ifndef ALPHATESTATTRIB_H
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#define ALPHATESTATTRIB_H
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#include "pandabase.h"
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#include "renderAttrib.h"
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class FactoryParams;
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/**
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* Enables or disables writing of pixel to framebuffer based on its alpha
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* value relative to a reference alpha value
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*/
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class EXPCL_PANDA_PGRAPH AlphaTestAttrib : public RenderAttrib {
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private:
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INLINE AlphaTestAttrib(PandaCompareFunc mode = M_always,
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PN_stdfloat reference_alpha = 1.0f);
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PUBLISHED:
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static CPT(RenderAttrib) make(PandaCompareFunc mode,
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PN_stdfloat reference_alpha);
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static CPT(RenderAttrib) make_default();
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INLINE PN_stdfloat get_reference_alpha() const;
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INLINE PandaCompareFunc get_mode() const;
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PUBLISHED:
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MAKE_PROPERTY(reference_alpha, get_reference_alpha);
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MAKE_PROPERTY(mode, get_mode);
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public:
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virtual void output(std::ostream &out) const;
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protected:
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virtual int compare_to_impl(const RenderAttrib *other) const;
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virtual size_t get_hash_impl() const;
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private:
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PandaCompareFunc _mode;
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PN_stdfloat _reference_alpha; // should be in range [0.0-1.0]
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PUBLISHED:
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static int get_class_slot() {
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return _attrib_slot;
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}
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virtual int get_slot() const {
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return get_class_slot();
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}
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MAKE_PROPERTY(class_slot, get_class_slot);
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public:
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static void register_with_read_factory();
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virtual void write_datagram(BamWriter *manager, Datagram &dg);
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protected:
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static TypedWritable *make_from_bam(const FactoryParams ¶ms);
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void fillin(DatagramIterator &scan, BamReader *manager);
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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RenderAttrib::init_type();
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register_type(_type_handle, "AlphaTestAttrib",
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RenderAttrib::get_class_type());
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_attrib_slot = register_slot(_type_handle, 100, new AlphaTestAttrib);
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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static int _attrib_slot;
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};
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#include "alphaTestAttrib.I"
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#endif
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