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Documentation                       Search   ps_dot.cpp Go to the documentation of this file. /* Copyright, 2001 Nevrax Ltd. * * This file is part of NEVRAX NEL. * NEVRAX NEL is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * NEVRAX NEL is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * You should have received a copy of the GNU General Public License * along with NEVRAX NEL; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. */ #include "std3d.h" #include "3d/ps_dot.h" #include "3d/ps_macro.h" #include "3d/ps_iterator.h" #include "3d/driver.h" #include "3d/particle_system.h" namespace NL3D { static const uint dotBufSize = 1024; // size used for point particles batching // CPSDot implementation // CVertexBuffer CPSDot::_DotVb; CVertexBuffer CPSDot::_DotVbColor; template <class T> inline void DrawDot(T it, CVertexBuffer &vb, const CPSAttribMaker<NLMISC::CRGBA> *colorScheme, uint leftToDo, CPSLocated *owner, CMaterial &mat, IDriver *driver, uint32 srcStep ) { nlassert(leftToDo != 0); const uint total = leftToDo; T itEnd; do { uint toProcess = leftToDo < dotBufSize ? leftToDo : dotBufSize; if (colorScheme) { // compute the colors colorScheme->make(owner, total - leftToDo, vb.getColorPointer(), vb.getVertexSize(), toProcess, false, srcStep ); itEnd = it + toProcess; uint8 *currPos = (uint8 *) vb.getVertexCoordPointer(); uint32 stride = vb.getVertexSize(); do { CHECK_VERTEX_BUFFER(vb, currPos); *((CVector *) currPos) = *it; ++it ; currPos += stride; } while (it != itEnd); } else if (srcStep == (1 << 16)) // make sure we haven't got auto-lod and that the step is 1.0 { // there's no color information in the buffer, so we can copy it directly ::memcpy(vb.getVertexCoordPointer(), &(*it), sizeof(NLMISC::CVector) * toProcess); it += toProcess; } else { itEnd = it + toProcess; uint8 *currPos = (uint8 *) vb.getVertexCoordPointer(); do { CHECK_VERTEX_BUFFER(vb, currPos); *((CVector *) currPos) = *it; ++it ; currPos += sizeof(float[3]); } while (it != itEnd); } driver->renderPoints(mat, toProcess); leftToDo -= toProcess; } while (leftToDo); } void CPSDot::draw(bool opaque) { PARTICLES_CHECK_MEM; if (!_Owner->getSize()) return; uint32 step; uint numToProcess; computeSrcStep(step, numToProcess); if (!numToProcess) return; _Owner->incrementNbDrawnParticles(numToProcess); // for benchmark purpose setupDriverModelMatrix(); IDriver *driver = getDriver(); CVertexBuffer &vb = _ColorScheme ? _DotVbColor : _DotVb; driver->activeVertexBuffer(vb); CParticleSystem &ps = *(_Owner->getOwner()); if (!_ColorScheme) { if (ps.getColorAttenuationScheme() == NULL) { _Mat.setColor(_Color); } else { NLMISC::CRGBA col; col.modulateFromColor(ps.getGlobalColor(), _Color); _Mat.setColor(col); } forceTexturedMaterialStages(0); } else { forceTexturedMaterialStages(1); _Mat.texConstantColor(0, ps.getGlobalColor()); SetupModulatedStage(_Mat, 0, CMaterial::Diffuse, CMaterial::Constant); } // Use the right drawing routine (auto-lod and non auto-lod) if (step == (1 << 16)) { DrawDot(_Owner->getPos().begin(), vb, _ColorScheme, numToProcess, _Owner, _Mat, driver, step ); } else { DrawDot(TIteratorVectStep1616(_Owner->getPos().begin(), 0, step), vb, _ColorScheme, numToProcess, _Owner, _Mat, driver, step ); } PARTICLES_CHECK_MEM; } void CPSDot::initVertexBuffers() { _DotVb.setVertexFormat(CVertexBuffer::PositionFlag); _DotVbColor.setVertexFormat(CVertexBuffer::PositionFlag | CVertexBuffer::PrimaryColorFlag); _DotVb.setNumVertices(dotBufSize); _DotVbColor.setNumVertices(dotBufSize); } void CPSDot::init(void) { _Mat.setLighting(false); _Mat.setZFunc(CMaterial::less); updateMatAndVbForColor(); } uint32 CPSDot::getMaxNumFaces(void) const { nlassert(_Owner); return _Owner->getMaxSize(); } void CPSDot::newElement(CPSLocated *emitterLocated, uint32 emitterIndex) { newColorElement(emitterLocated, emitterIndex); } void CPSDot::deleteElement(uint32 index) { deleteColorElement(index); } void CPSDot::updateMatAndVbForColor(void) { } bool CPSDot::hasTransparentFaces(void) { return getBlendingMode() != CPSMaterial::alphaTest ; } bool CPSDot::hasOpaqueFaces(void) { return !hasTransparentFaces(); } void CPSDot::resize(uint32 size) { nlassert(size < (1 << 16)); resizeColor(size); } void CPSDot::serial(NLMISC::IStream &f) throw(NLMISC::EStream) { f.serialVersion(1); CPSParticle::serial(f); CPSColoredParticle::serialColorScheme(f); serialMaterial(f); if (f.isReading()) { init(); } } } // NL3D