12226e4371
and passed as paramters into straight forward non const built in types, i.e. const bool foogbar(const int) becomes bool foobar(int).
146 lines
4.6 KiB
Plaintext
146 lines
4.6 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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#ifndef OSG_STENCIL
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#define OSG_STENCIL 1
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#include <osg/StateAttribute>
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#include <osg/Types>
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namespace osg {
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/** Encapsulate OpenGL glStencilFunc/Op/Mask functions.
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*/
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class SG_EXPORT Stencil : public StateAttribute
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{
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public :
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Stencil();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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Stencil(const Stencil& stencil,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
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StateAttribute(stencil,copyop),
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_func(stencil._func),
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_funcRef(stencil._funcRef),
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_funcMask(stencil._funcMask),
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_sfail(stencil._sfail),
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_zfail(stencil._zfail),
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_zpass(stencil._zpass),
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_writeMask(stencil._writeMask) {}
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META_StateAttribute(osg, Stencil, STENCIL);
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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 the types are equal and then create the rhs variable
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// used by the COMPARE_StateAttribute_Paramter macro's below.
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COMPARE_StateAttribute_Types(Stencil,sa)
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// compare each paramter in turn against the rhs.
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COMPARE_StateAttribute_Parameter(_func)
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COMPARE_StateAttribute_Parameter(_funcRef)
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COMPARE_StateAttribute_Parameter(_funcMask)
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COMPARE_StateAttribute_Parameter(_sfail)
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COMPARE_StateAttribute_Parameter(_zfail)
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COMPARE_StateAttribute_Parameter(_zpass)
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COMPARE_StateAttribute_Parameter(_writeMask)
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return 0; // passed all the above comparison macro's, must be equal.
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}
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virtual void getAssociatedModes(std::vector<GLMode>& modes) const
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{
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modes.push_back(GL_STENCIL_TEST);
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}
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enum Function
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{
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NEVER = GL_NEVER,
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LESS = GL_LESS,
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EQUAL = GL_EQUAL,
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LEQUAL = GL_LEQUAL,
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GREATER = GL_GREATER,
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NOTEQUAL = GL_NOTEQUAL,
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GEQUAL = GL_GEQUAL,
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ALWAYS = GL_ALWAYS
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};
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inline void setFunction(const Function func,int ref,uint mask)
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{
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_func = func;
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_funcRef = ref;
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_funcMask = mask;
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}
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inline const Function getFunction() const { return _func; }
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inline int getFunctionRef() const { return _funcRef; }
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inline const uint getFunctionMask() const { return _funcMask; }
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enum Operation
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{
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KEEP = GL_KEEP,
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ZERO = GL_ZERO,
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REPLACE = GL_REPLACE,
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INCR = GL_INCR,
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DECR = GL_DECR,
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INVERT = GL_INVERT
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};
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/** set the operations to apply when the various stencil and depth
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* tests fail or pass. First parameter is to control the operation
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* when the stencil test fails. The second parameter is to control the
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* operation when the stencil test passes, but depth test fails. The
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* third parameter controls the operation when both the stencil test
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* and depth pass. Ordering of parameter is the same as if using
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* glStencilOp(,,).*/
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inline void setOperation(const Operation sfail, const Operation zfail, const Operation zpass)
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{
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_sfail = sfail;
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_zfail = zfail;
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_zpass = zpass;
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}
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/** get the operation when the stencil test fails.*/
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inline const Operation getStencilFailOperation() const { return _sfail; }
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/** get the operation when the stencil test passes but the depth test fails*/
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inline const Operation getStencilPassAndDepthFailOperation() const { return _zfail; }
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/** get the operation when both the stencil test and the depth test pass*/
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inline const Operation getStencilPassAndDepthPassOperation() const { return _zpass; }
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inline void setWriteMask(uint mask) { _writeMask = mask; }
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inline const uint getWriteMask() const { return _writeMask; }
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virtual void apply(State& state) const;
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protected:
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virtual ~Stencil();
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Function _func;
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int _funcRef;
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uint _funcMask;
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Operation _sfail;
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Operation _zfail;
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Operation _zpass;
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uint _writeMask;
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};
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}
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#endif
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