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113 lines
3.6 KiB
113 lines
3.6 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield |
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* |
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* This library is open source and may be redistributed and/or modified under |
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or |
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* (at your option) any later version. The full license is in LICENSE file |
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* included with this distribution, and on the openscenegraph.org website. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* OpenSceneGraph Public License for more details. |
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*/ |
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#ifndef OSG_LOGICOP |
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#define OSG_LOGICOP 1 |
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#include <osg/StateAttribute> |
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#ifndef OSG_GL_FIXED_FUNCTION_AVAILABLE |
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#define GL_CLEAR 0x1500 |
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#define GL_SET 0x150F |
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#define GL_COPY 0x1503 |
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#define GL_COPY_INVERTED 0x150C |
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#define GL_NOOP 0x1505 |
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#define GL_AND 0x1501 |
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#define GL_NAND 0x150E |
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#define GL_OR 0x1507 |
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#define GL_NOR 0x1508 |
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#define GL_XOR 0x1506 |
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#define GL_EQUIV 0x1509 |
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#define GL_AND_REVERSE 0x1502 |
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#define GL_AND_INVERTED 0x1504 |
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#define GL_OR_REVERSE 0x150B |
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#define GL_OR_INVERTED 0x150D |
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#define GL_COLOR_LOGIC_OP 0x0BF2 |
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#endif |
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namespace osg { |
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/** Encapsulates OpenGL LogicOp state. */ |
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class OSG_EXPORT LogicOp : public StateAttribute |
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{ |
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public : |
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enum Opcode { |
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CLEAR = GL_CLEAR, |
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SET = GL_SET, |
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COPY = GL_COPY, |
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COPY_INVERTED = GL_COPY_INVERTED, |
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NOOP = GL_NOOP, |
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INVERT = GL_INVERT, |
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AND = GL_AND, |
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NAND = GL_NAND, |
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OR = GL_OR, |
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NOR = GL_NOR, |
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XOR = GL_XOR, |
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EQUIV = GL_EQUIV, |
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AND_REVERSE = GL_AND_REVERSE, |
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AND_INVERTED = GL_AND_INVERTED, |
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OR_REVERSE = GL_OR_REVERSE, |
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OR_INVERTED = GL_OR_INVERTED |
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}; |
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LogicOp(); |
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LogicOp(Opcode opcode); |
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/** Copy constructor using CopyOp to manage deep vs shallow copy. */ |
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LogicOp(const LogicOp& trans,const CopyOp& copyop=CopyOp::SHALLOW_COPY): |
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StateAttribute(trans,copyop), |
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_opcode(trans._opcode){} |
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META_StateAttribute(osg, LogicOp,LOGICOP); |
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/** Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */ |
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virtual int compare(const StateAttribute& sa) const |
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{ |
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// Check for equal types, then create the rhs variable |
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// used by the COMPARE_StateAttribute_Parameter macros below. |
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COMPARE_StateAttribute_Types(LogicOp,sa) |
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// Compare each parameter in turn against the rhs. |
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COMPARE_StateAttribute_Parameter(_opcode) |
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return 0; // Passed all the above comparison macros, so must be equal. |
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} |
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virtual bool getModeUsage(StateAttribute::ModeUsage& usage) const |
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{ |
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usage.usesMode(GL_COLOR_LOGIC_OP); |
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return true; |
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} |
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inline void setOpcode(Opcode opcode) |
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{ |
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_opcode = opcode; |
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} |
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inline Opcode getOpcode() const { return _opcode; } |
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virtual void apply(State& state) const; |
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protected : |
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virtual ~LogicOp(); |
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Opcode _opcode; |
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}; |
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} |
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#endif
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