91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
// Filename: alphaTestAttrib.h
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// Created by: drose (04Mar02)
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//
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////////////////////////////////////////////////////////////////////
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//
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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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////////////////////////////////////////////////////////////////////
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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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// Class : AlphaTestAttrib
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// Description : Enables or disables writing of pixel to framebuffer
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// based on its alpha 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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float reference_alpha = 1.0f);
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PUBLISHED:
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static CPT(RenderAttrib) make(PandaCompareFunc mode,
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float reference_alpha);
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static CPT(RenderAttrib) make_default();
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INLINE float get_reference_alpha() const;
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INLINE PandaCompareFunc get_mode() const;
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public:
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virtual void output(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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private:
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PandaCompareFunc _mode;
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float _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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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, make_default);
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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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