masterpart.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 MasterPart.cpp
/// ParaComp master part window proxy

#include <paracomp/include/MasterPart.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))

ParaCompMasterPart::ParaCompMasterPart(Window *window, std::vector<std::string> hostlist, ParaCompSupport *support,
	ParallelRenderingSupport::CompositingOperator compositingOperator) :
	ParaCompPart(window, support, compositingOperator), mHostList(hostlist)
{
	// Turn on displaying output by default explicitly
	mDisplayOutput = true;
	
	// Create event collector
	mEventCollector =  new EventCollector(hostlist);

	mEventQueueWindowProxy = new EventQueueWindowProxy(this);
	insertWindowProxy(mEventQueueWindowProxy);

	// Create context
	createContext();
	
	// Refresh context info
	_refreshContextInfo();
	
	// Create proper frame processor
	_createFrameProcessor();
	
	// Wait for event injectors to connect
	mEventCollector->waitForInjectors();
}

ParaCompMasterPart::~ParaCompMasterPart() {
	//removeWindowProxy();
	delete mEventQueueWindowProxy;

	delete mEventCollector;
}

void ParaCompMasterPart::createContext() {
	PCint compositingOperator = (mCompositingOperator == ParallelRenderingSupport::ALPHA_BLEND_OPERATOR ? PC_COMP_ALPHA_SORT : PC_COMP_DEPTH);
	PCint pixelFormat = (mCompositingOperator == ParallelRenderingSupport::ALPHA_BLEND_OPERATOR ? PC_PF_BGRA8 : PC_PF_BGR8|PC_PF_Z32I);

	// Create a list of properties for the context that we are going to create.
	// Properties are specified as (name, value) terminated by
	// PC_PROPERTY_END 
	PCint properties[] = {
		PC_COMPOSITE_TYPE, compositingOperator,
		PC_PIXEL_FORMAT, pixelFormat,
		PC_NETWORK_ID, mSupport->getNetId(),
		PC_OUTPUT_DEPTH, 0,
		PC_PROPERTY_END
	};

	// Now create a master context.
	// This is the only difference between a master & the slaves : the
	// slaves cannot create a context without the help of the master.
	// After context creation, there is no difference (capability wise)
	// between master and slaves.
	{ 
		char **hostList = _getHostListC();
		//printf("master %s creating context\n", hostList[0]);
		PCerr err = pcContextCreateMaster(properties, hostList, hostList[0], &mContext);
		PCCHECKERROR("ParaCompMasterPart::createContext", err); 
		//printf("master %s ok\n", hostList[0]);
		delete []hostList;
	}
}

char **ParaCompMasterPart::_getHostListC() {
	size_t hostCount = mHostList.size();
	char **hostList = new char*[hostCount+1];
	for(size_t i=0;i<hostCount; i++) {
		hostList[i] = (char *) mHostList[i].c_str();
		//printf("%d %s\n", i, hostList[i]);
	}
	hostList[hostCount] = 0;
	
	return hostList;
}

#undef PCCHECKERROR

} // namespace MinGLE

#endif // MINGLE_PARACOMP_SUPPORT == 1