particles_kernel.cuh

/*
 * GPU Smoldyn: Smoldyn algorithm ported to the GPU using CUDA 2.2
 * Writtern By Lorenzo Dematté, 2010-2011
 *
 * This file is part of GPU Smoldyn
 * 
 *     GPU Smoldyn 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 3 of the License, or
 *     (at your option) any later version.
 * 
 *     GPU Smoldyn 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 Foobar.  If not, see <http://www.gnu.org/licenses/>. 
 * 
 * Based on algorithm and source code of Smoldyn, written by Steve Andrews, 2003.
 * 
 * Portions taken by code examples in NVIDIA Whitepapers, GPU Gems 2 and 3, 
 * Copyright 1993-2009 NVIDIA Corporation, Addison-Wesley and the original authors. 
 * 
 */
 
#ifndef PARTICLES_KERNEL_H
#define PARTICLES_KERNEL_H

#ifndef __DEVICE_EMULATION__
#define USE_TEX 1
#endif

#if USE_TEX
#define FETCH(t, i) tex1Dfetch(t##Tex, i)
#else
#define FETCH(t, i) t[i]
#endif

#include "vector_types.h"
typedef unsigned int uint;

const int gaussianTableDim = 4096;

// simulation parameters
struct SimParams {
    float3 colliderPos;
    float  colliderRadius;    

    float3 gravity;
    float globalDamping;
    float particleRadius;

    uint3 gridSize;
    uint numCells;
    float3 worldOrigin;
    float3 cellSize;

    uint numBodies;
    uint maxParticlesPerCell;

    float spring;
    float damping;
    float shear;
    float attraction;
    float boundaryDamping;
};

#endif