frameprocessor.h

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 FrameProcessor.h
/// Generic ParaComp frame processor

#ifndef __MINGLE_PARALLEL_PARACOMP_FRAMEPROCESSOR_H__
#define __MINGLE_PARALLEL_PARACOMP_FRAMEPROCESSOR_H__

// Include class definitions
#include <parallel-classes.h>

#include <pcapi.h>

#if MINGLE_PARACOMP_SUPPORT == 1

namespace MinGLE {

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

	class FrameProcessor {
		protected:
			static const bool DEFAULT_SORT_REQUEST = false;

		protected:
			PCcontext mContext;
			PCid mFrameId;
			//unsigned mWidth, mHeight;			

			bool mNeedSorting;
			PCuint mSortOrder;

		public:
			FrameProcessor(PCcontext context, bool needSorting = DEFAULT_SORT_REQUEST);
			virtual ~FrameProcessor();

			inline virtual void beginFrame(PCuint left, PCuint top, PCuint width, PCuint height) {
				PCerr err = pcFrameBegin(
               		mContext, 								// our context
               		&mFrameId, 								// PC will fill this in
               		1,	 									// this host contributes 1 framelet
               		&left, &top, &width, &height, 			// framelet attributes
               		mNeedSorting ? &mSortOrder : 0);		// order parameter 
				PCCHECKERROR("FrameProcessor::beginFrame", err);
			}

			/// Skip contribution pixels to this frame
			/// Note that you cannot call addFrame() when
			/// skipFrame is called!
			inline virtual void skipFrame() {
				PCerr err = pcFrameBegin(
               		mContext, 								// our context
               		&mFrameId, 								// PC will fill this in
               		0,	 									// no framelets are contributed
               		0, 0, 0, 0, 							// dummy framelet attributes
               		0);										// dummy order parameter 
				PCCHECKERROR("FrameProcessor::skipFrame", err);
			}
			
			inline virtual void endFrame() {
				PCerr err = pcFrameEnd(mContext, mFrameId);
				PCCHECKERROR("FrameProcessor::endFrame", err);
			}
			
			inline virtual void addFrame() {
				Except("TODO implement", "FrameProcessor::addFrame");
			}
			
			inline virtual void setSortOrder(PCuint sortOrder) {
				mSortOrder = sortOrder;
			}
			
			virtual void displayOutput(const unsigned left, const unsigned top, const unsigned width, const unsigned height);
		
		protected:
			int convertPixelFormat(int pcPixelFormat);
	};

	// =============================================================================

	// Optimized version for HP systems
	class FrameProcessorHP : public FrameProcessor {
	
		public:
			FrameProcessorHP(PCcontext context, bool needSorting = DEFAULT_SORT_REQUEST);
		
			inline virtual void addFrame() {
				PCerr err = pcFrameAddGLFrameletEXT(mContext, mFrameId, 0, 0);
				PCCHECKERROR("FrameProcessorHP::addFrame", err);
			}
			
			virtual void displayOutput(const unsigned left, const unsigned top, const unsigned width, const unsigned height);
	};
	
#undef PCCHECKERROR

}

#endif // MINGLE_PARACOMP_SUPPORT == 1

#endif // __MINGLE_PARALLEL_PARACOMP_FRAMEPROCESSOR_H__