114 lines
3.3 KiB
C++
114 lines
3.3 KiB
C++
// Filename: lightRampAttrib.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 LIGHTRAMPATTRIB_H
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#define LIGHTRAMPATTRIB_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 : LightRampAttrib
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// Description : A Light Ramp is any unary operator that takes a
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// rendered pixel as input, and adjusts the brightness
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// of that pixel. For example, gamma correction is a
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// kind of light ramp. So is HDR tone mapping. So is
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// cartoon shading. See the constructors for an
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// explanation of each kind of ramp.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA_PGRAPH LightRampAttrib : public RenderAttrib {
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private:
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INLINE LightRampAttrib();
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PUBLISHED:
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enum LightRampMode {
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LRT_default,
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LRT_identity,
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LRT_single_threshold,
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LRT_double_threshold,
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LRT_hdr0,
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LRT_hdr1,
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LRT_hdr2,
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};
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static CPT(RenderAttrib) make_default();
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static CPT(RenderAttrib) make_identity();
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static CPT(RenderAttrib) make_single_threshold(PN_stdfloat thresh0, PN_stdfloat lev0);
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static CPT(RenderAttrib) make_double_threshold(PN_stdfloat thresh0, PN_stdfloat lev0, PN_stdfloat thresh1, PN_stdfloat lev1);
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static CPT(RenderAttrib) make_hdr0();
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static CPT(RenderAttrib) make_hdr1();
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static CPT(RenderAttrib) make_hdr2();
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INLINE LightRampMode get_mode() const;
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INLINE PN_stdfloat get_level(int n) const;
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INLINE PN_stdfloat get_threshold(int n) 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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virtual size_t get_hash_impl() const;
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virtual CPT(RenderAttrib) get_auto_shader_attrib_impl(const RenderState *state) const;
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private:
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LightRampMode _mode;
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PN_stdfloat _level[2];
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PN_stdfloat _threshold[2];
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static CPT(RenderAttrib) _default;
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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, "LightRampAttrib",
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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 "lightRampAttrib.I"
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#endif
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