Equalizer 1.0

nbody.h

00001 
00002 /*
00003  * Copyright (c) 2009, Philippe Robert <probert@eyescale.ch> 
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions are met:
00007  *
00008  * - Redistributions of source code must retain the above copyright notice, this
00009  *   list of conditions and the following disclaimer.
00010  * - Redistributions in binary form must reproduce the above copyright notice,
00011  *   this list of conditions and the following disclaimer in the documentation
00012  *   and/or other materials provided with the distribution.
00013  * - Neither the name of Eyescale Software GmbH nor the names of its
00014  *   contributors may be used to endorse or promote products derived from this
00015  *   software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
00021  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00022  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00025  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00027  * POSSIBILITY OF SUCH DAMAGE.
00028  */
00029 
00030 #ifndef EQNBODY_NBODY_H
00031 #define EQNBODY_NBODY_H
00032 
00033 #include <cuda.h>
00034 
00035 extern "C"
00036 {
00037     void cudaInit( int argc, char **argv );
00038     void setDeviceSoftening( float softening );
00039     void allocateHostArrays( float** pos, float** vel, float** col, int nBytes );
00040     void deleteHostArrays( float* pos, float *vel, float *col );
00041     void allocateNBodyArrays( float* vel[2], int numBytes );
00042     void deleteNBodyArrays( float* vel[2] );
00043     void integrateNbodySystem( float* newPos, float* newVel, 
00044                                float* oldPos, float* oldVel,
00045                                unsigned int pboOldPos, unsigned int pboNewPos,
00046                                float deltaTime, float damping, 
00047                                unsigned int numBodies, int offset, int length,
00048                               int p, int q, int bUsePBO );
00049     void copyArrayFromDevice( float* host, const float* device, unsigned int pbo, 
00050                               int numBytes );
00051     void copyArrayToDevice( float* device, const float* host, int numBytes );
00052     void registerGLBufferObject( unsigned int pbo );
00053     void unregisterGLBufferObject( unsigned int pbo );
00054     void threadSync();
00055 }
00056 
00057 #endif// EQNBODY_NBODY_H
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