328 lines
9.1 KiB
C++
328 lines
9.1 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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#include <osg/PrimitiveSet>
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#include <osg/BufferObject>
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#include <osg/State>
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#include <osg/Notify>
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using namespace osg;
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unsigned int PrimitiveSet::getNumPrimitives() const
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{
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switch(_mode)
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{
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case(POINTS): return getNumIndices();
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case(LINES): return getNumIndices()/2;
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case(TRIANGLES): return getNumIndices()/3;
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case(QUADS): return getNumIndices()/4;
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case(LINE_STRIP):
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case(LINE_LOOP):
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case(TRIANGLE_STRIP):
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case(TRIANGLE_FAN):
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case(QUAD_STRIP):
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case(PATCHES):
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case(POLYGON): return 1;
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}
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return 0;
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}
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void DrawArrays::draw(State& state, bool) const
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{
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#if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE)
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GLenum mode = _mode;
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if (_mode==GL_QUADS)
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{
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state.drawQuads(_first, _count, _numInstances);
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return;
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}
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else if (mode==GL_POLYGON)
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{
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mode = GL_TRIANGLE_FAN;
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}
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else if (mode==GL_QUAD_STRIP)
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{
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mode = GL_TRIANGLE_STRIP;
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}
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if (_numInstances>=1) state.glDrawArraysInstanced(mode,_first,_count, _numInstances);
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else glDrawArrays(mode,_first,_count);
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#else
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if (_numInstances>=1) state.glDrawArraysInstanced(_mode,_first,_count, _numInstances);
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else glDrawArrays(_mode,_first,_count);
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#endif
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}
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void DrawArrays::accept(PrimitiveFunctor& functor) const
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{
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functor.drawArrays(_mode,_first,_count);
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}
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void DrawArrays::accept(PrimitiveIndexFunctor& functor) const
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{
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functor.drawArrays(_mode,_first,_count);
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}
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unsigned int DrawArrayLengths::getNumPrimitives() const
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{
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switch(_mode)
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{
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case(POINTS): return getNumIndices();
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case(LINES): return getNumIndices()/2;
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case(TRIANGLES): return getNumIndices()/3;
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case(QUADS): return getNumIndices()/4;
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case(LINE_STRIP):
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case(LINE_LOOP):
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case(TRIANGLE_STRIP):
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case(TRIANGLE_FAN):
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case(QUAD_STRIP):
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case(PATCHES):
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case(POLYGON): return size();
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}
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return 0;
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}
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void DrawArrayLengths::draw(State& state, bool) const
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{
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GLenum mode = _mode;
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#if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE)
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if (_mode==GL_QUADS)
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{
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GLint first = _first;
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for(vector_type::const_iterator itr=begin();
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itr!=end();
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++itr)
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{
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state.drawQuads(first, *itr, _numInstances);
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first += *itr;
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}
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return;
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}
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if (mode==GL_POLYGON) mode = GL_TRIANGLE_FAN;
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if (mode==GL_QUAD_STRIP) mode = GL_TRIANGLE_STRIP;
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#endif
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GLint first = _first;
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for(vector_type::const_iterator itr=begin();
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itr!=end();
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++itr)
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{
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glDrawArrays(mode,first,*itr);
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first += *itr;
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}
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}
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void DrawArrayLengths::accept(PrimitiveFunctor& functor) const
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{
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GLint first = _first;
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for(vector_type::const_iterator itr=begin();
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itr!=end();
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++itr)
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{
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functor.drawArrays(_mode,first,*itr);
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first += *itr;
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}
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}
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void DrawArrayLengths::accept(PrimitiveIndexFunctor& functor) const
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{
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GLint first = _first;
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for(vector_type::const_iterator itr=begin();
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itr!=end();
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++itr)
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{
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functor.drawArrays(_mode,first,*itr);
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first += *itr;
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}
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}
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unsigned int DrawArrayLengths::getNumIndices() const
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{
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unsigned int count = 0;
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for(vector_type::const_iterator itr=begin();
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itr!=end();
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++itr)
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{
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count += *itr;
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}
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return count;
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}
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DrawElementsUByte::~DrawElementsUByte()
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{
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releaseGLObjects();
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}
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void DrawElementsUByte::draw(State& state, bool useVertexBufferObjects) const
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{
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GLenum mode = _mode;
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#if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE)
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if (mode==GL_POLYGON) mode = GL_TRIANGLE_FAN;
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if (mode==GL_QUAD_STRIP) mode = GL_TRIANGLE_STRIP;
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#endif
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if (useVertexBufferObjects)
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{
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GLBufferObject* ebo = getOrCreateGLBufferObject(state.getContextID());
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state.bindElementBufferObject(ebo);
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if (ebo)
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{
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if (_numInstances>=1) state.glDrawElementsInstanced(mode, size(), GL_UNSIGNED_BYTE, (const GLvoid *)(ebo->getOffset(getBufferIndex())), _numInstances);
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else glDrawElements(mode, size(), GL_UNSIGNED_BYTE, (const GLvoid *)(ebo->getOffset(getBufferIndex())));
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}
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else
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{
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if (_numInstances>=1) state.glDrawElementsInstanced(mode, size(), GL_UNSIGNED_BYTE, &front(), _numInstances);
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else glDrawElements(mode, size(), GL_UNSIGNED_BYTE, &front());
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}
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}
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else
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{
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if (_numInstances>=1) state.glDrawElementsInstanced(mode, size(), GL_UNSIGNED_BYTE, &front(), _numInstances);
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else glDrawElements(mode, size(), GL_UNSIGNED_BYTE, &front());
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}
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}
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void DrawElementsUByte::accept(PrimitiveFunctor& functor) const
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{
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if (!empty()) functor.drawElements(_mode,size(),&front());
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}
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void DrawElementsUByte::accept(PrimitiveIndexFunctor& functor) const
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{
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if (!empty()) functor.drawElements(_mode,size(),&front());
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}
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void DrawElementsUByte::offsetIndices(int offset)
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{
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for(iterator itr=begin();
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itr!=end();
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++itr)
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{
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*itr += offset;
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}
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}
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DrawElementsUShort::~DrawElementsUShort()
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{
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releaseGLObjects();
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}
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void DrawElementsUShort::draw(State& state, bool useVertexBufferObjects) const
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{
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GLenum mode = _mode;
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#if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE)
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if (mode==GL_POLYGON) mode = GL_TRIANGLE_FAN;
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if (mode==GL_QUAD_STRIP) mode = GL_TRIANGLE_STRIP;
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#endif
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if (useVertexBufferObjects)
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{
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GLBufferObject* ebo = getOrCreateGLBufferObject(state.getContextID());
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state.bindElementBufferObject(ebo);
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if (ebo)
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{
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if (_numInstances>=1) state.glDrawElementsInstanced(mode, size(), GL_UNSIGNED_SHORT, (const GLvoid *)(ebo->getOffset(getBufferIndex())), _numInstances);
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else glDrawElements(mode, size(), GL_UNSIGNED_SHORT, (const GLvoid *)(ebo->getOffset(getBufferIndex())));
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}
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else
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{
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if (_numInstances>=1) state.glDrawElementsInstanced(mode, size(), GL_UNSIGNED_SHORT, &front(), _numInstances);
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else glDrawElements(mode, size(), GL_UNSIGNED_SHORT, &front());
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}
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}
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else
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{
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if (_numInstances>=1) state.glDrawElementsInstanced(mode, size(), GL_UNSIGNED_SHORT, &front(), _numInstances);
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else glDrawElements(mode, size(), GL_UNSIGNED_SHORT, &front());
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}
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}
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void DrawElementsUShort::accept(PrimitiveFunctor& functor) const
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{
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if (!empty()) functor.drawElements(_mode,size(),&front());
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}
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void DrawElementsUShort::accept(PrimitiveIndexFunctor& functor) const
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{
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if (!empty()) functor.drawElements(_mode,size(),&front());
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}
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void DrawElementsUShort::offsetIndices(int offset)
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{
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for(iterator itr=begin();
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itr!=end();
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++itr)
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{
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*itr += offset;
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}
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}
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DrawElementsUInt::~DrawElementsUInt()
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{
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releaseGLObjects();
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}
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void DrawElementsUInt::draw(State& state, bool useVertexBufferObjects) const
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{
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GLenum mode = _mode;
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#if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE)
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if (mode==GL_POLYGON) mode = GL_TRIANGLE_FAN;
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if (mode==GL_QUAD_STRIP) mode = GL_TRIANGLE_STRIP;
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#endif
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if (useVertexBufferObjects)
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{
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GLBufferObject* ebo = getOrCreateGLBufferObject(state.getContextID());
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state.bindElementBufferObject(ebo);
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if (ebo)
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{
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if (_numInstances>=1) state.glDrawElementsInstanced(mode, size(), GL_UNSIGNED_INT, (const GLvoid *)(ebo->getOffset(getBufferIndex())), _numInstances);
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else glDrawElements(mode, size(), GL_UNSIGNED_INT, (const GLvoid *)(ebo->getOffset(getBufferIndex())));
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}
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else
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{
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if (_numInstances>=1) state.glDrawElementsInstanced(mode, size(), GL_UNSIGNED_INT, &front(), _numInstances);
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else glDrawElements(mode, size(), GL_UNSIGNED_INT, &front());
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}
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}
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else
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{
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if (_numInstances>=1) state.glDrawElementsInstanced(mode, size(), GL_UNSIGNED_INT, &front(), _numInstances);
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else glDrawElements(mode, size(), GL_UNSIGNED_INT, &front());
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}
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}
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void DrawElementsUInt::accept(PrimitiveFunctor& functor) const
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{
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if (!empty()) functor.drawElements(_mode,size(),&front());
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}
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void DrawElementsUInt::accept(PrimitiveIndexFunctor& functor) const
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{
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if (!empty()) functor.drawElements(_mode,size(),&front());
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}
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void DrawElementsUInt::offsetIndices(int offset)
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{
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for(iterator itr=begin();
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itr!=end();
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++itr)
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{
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*itr += offset;
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}
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}
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