107 lines
4.5 KiB
C++
107 lines
4.5 KiB
C++
/* -*-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_ArrayDispatchers
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#define OSG_ArrayDispatchers 1
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#include <osg/ref_ptr>
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#include <osg/Array>
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#include <osg/Matrixd>
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namespace osg {
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// forward declare
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class State;
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class GLBeginEndAdapter;
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class AttributeDispatchMap;
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struct AttributeDispatch : public osg::Referenced
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{
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virtual void assign(const GLvoid*, const IndexArray*) {}
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virtual void operator() (unsigned int) {};
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};
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/** Helper class for managing the dispatch to OpenGL of various attribute arrays such as stored in osg::Geometry.*/
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class OSG_EXPORT ArrayDispatchers : public osg::Referenced
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{
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public:
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ArrayDispatchers(osg::State& state);
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~ArrayDispatchers();
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void assignTexCoordDispatchers(unsigned int unit);
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void assignVertexAttribDispatchers(unsigned int unit);
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AttributeDispatch* vertexDispatcher(Array* array, IndexArray* indices);
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AttributeDispatch* normalDispatcher(Array* array, IndexArray* indices);
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AttributeDispatch* colorDispatcher(Array* array, IndexArray* indices);
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AttributeDispatch* secondaryColorDispatcher(Array* array, IndexArray* indices);
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AttributeDispatch* fogCoordDispatcher(Array* array, IndexArray* indices);
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AttributeDispatch* texCoordDispatcher(unsigned int unit, Array* array, IndexArray* indices);
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AttributeDispatch* vertexAttribDispatcher(unsigned int unit, Array* array, IndexArray* indices);
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void reset();
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void setUseGLBeginEndAdapter(bool flag) { _useGLBeginEndAdapter = flag; }
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bool getUseGLBeginEndAdapter() const { return _useGLBeginEndAdapter; }
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void activate(unsigned int binding, AttributeDispatch* at);
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void activateVertexArray(unsigned int binding, osg::Array* array, osg::IndexArray* indices) { activate(binding, vertexDispatcher(array, indices)); }
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void activateColorArray(unsigned int binding, osg::Array* array, osg::IndexArray* indices) { activate(binding, colorDispatcher(array, indices)); }
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void activateNormalArray(unsigned int binding, osg::Array* array, osg::IndexArray* indices) { activate(binding, normalDispatcher(array, indices)); }
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void activateSecondaryColorArray(unsigned int binding, osg::Array* array, osg::IndexArray* indices) { activate(binding, secondaryColorDispatcher(array, indices)); }
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void activateFogCoordArray(unsigned int binding, osg::Array* array, osg::IndexArray* indices) { activate(binding, fogCoordDispatcher(array, indices)); }
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void activateTexCoordArray(unsigned int binding, unsigned int unit, osg::Array* array, osg::IndexArray* indices) { activate(binding, texCoordDispatcher(unit, array, indices)); }
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void activateVertexAttribArray(unsigned int binding, unsigned int unit, osg::Array* array, osg::IndexArray* indices) { activate(binding, vertexAttribDispatcher(unit, array, indices)); }
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void dispatch(unsigned int binding);
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void dispatch(unsigned int binding, unsigned int index);
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void Begin(GLenum mode);
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void End();
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protected:
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State* _state;
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GLBeginEndAdapter* _glBeginEndAdapter;
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AttributeDispatchMap* _vertexDispatchers;
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AttributeDispatchMap* _normalDispatchers;
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AttributeDispatchMap* _colorDispatchers;
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AttributeDispatchMap* _secondaryColorDispatchers;
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AttributeDispatchMap* _fogCoordDispatchers;
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typedef std::vector<AttributeDispatchMap*> AttributeDispatchMapList;
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AttributeDispatchMapList _texCoordDispatchers;
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AttributeDispatchMapList _vertexAttribDispatchers;
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typedef std::vector<AttributeDispatch*> AttributeDispatchList;
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struct BindingGroup
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{
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unsigned int _index;
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AttributeDispatchList _attributeDispatchList;
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};
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typedef std::vector<BindingGroup> BindingGroupList;
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BindingGroupList _bindingGroupList;
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bool _useGLBeginEndAdapter;
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};
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}
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#endif
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