slavepart.cpp

光滑质点无网格法SPH并行计算程序

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//     \/__/                     \/__/         \/__/         \/__/     \/__/    
// 
// =============================================================================
//                       Minimalist OpenGL Environment
//                       Parallel Rendering Extension
// =============================================================================
//
// Copyright 2007 Balazs Domonkos
// 
// This program 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
// of the License, or (at your option) any later version.
// 
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

/// @file SlavePart.cpp
/// ParaComp slave part window proxy

#include <paracomp/include/SlavePart.h>
#include <paracomp/include/Support.h>

#if MINGLE_PARACOMP_SUPPORT == 1

namespace MinGLE {

#define PCCHECKERROR(method, err) 	if(err!=PC_NO_ERROR) Except(method, pcGetErrorString(err))

ParaCompSlavePart::ParaCompSlavePart(Window *window, const std::string& thisHost, ParaCompSupport *support,
	ParallelRenderingSupport::CompositingOperator compositingOperator) :
	ParaCompPart(window, support, compositingOperator), mThisHost(thisHost)
{
	// Create event injector
	mEventInjector = new EventInjector(this, thisHost);

	// Create context
	createContext();
	
	// Refresh context info
	_refreshContextInfo();

	// Create proper frame processor
	_createFrameProcessor();
	
	// Connect event injector to the event collector of the master
	mEventInjector->connectToCollector(mMasterHost);
}

ParaCompSlavePart::~ParaCompSlavePart() {
	delete mEventInjector;
}

void ParaCompSlavePart::createContext() {
	// Create slave context
	//printf("slave %s creating context\n", mThisHost.c_str());
	{ PCerr err = pcContextCreate(mSupport->getNetId(), (char *) mThisHost.c_str(), &mContext);
	PCCHECKERROR("ParaCompPart::destroyContext", err); }
	//printf("slave %s ok\n", mThisHost.c_str());
}

void ParaCompSlavePart::_refreshContextInfo() {
	// Base implementation
	ParaCompPart::_refreshContextInfo();

	// Get name of the master host
	PCstring master;
	pcContextGetString(mContext, PC_HOSTNAME, PC_MASTER_INDEX, &master);
	mMasterHost = master;

	// Get compositing operator
	PCint compositingOperator;
	pcContextGetInteger(mContext, PC_COMPOSITE_TYPE, PC_INDEX_DEFAULT, &compositingOperator);
	mCompositingOperator = (compositingOperator == PC_COMP_ALPHA_SORT) ? ParallelRenderingSupport::ALPHA_BLEND_OPERATOR : ParallelRenderingSupport::DEPTH_OPERATOR;
}

#undef PCCHECKERROR

} // namespace MinGLE

#endif // MINGLE_PARACOMP_SUPPORT == 1