public VerletDebrisSystem(int maxNumParticles, float timestep, int maxIterations, Material material, Bounds bounds, TerrainSystem terrainSystem)
{
this.timestep = timestep;
this.maxIterations = maxIterations;
this.material = material;
this.bounds = bounds;
this.terrainSystem = terrainSystem;
positionsBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
velocitiesBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
lifetimesBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
predictedBuffers = new ComputeBuffer[2];
predictedBuffers[0] = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
predictedBuffers[1] = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
deadBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(uint)), ComputeBufferType.Append);
deadBuffer.SetCounterValue(0);
aliveBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(uint)), ComputeBufferType.Append);
aliveBuffer.SetCounterValue(0);
emitBuffer = new ComputeBuffer(THREADS, Marshal.SizeOf(typeof(Vector4)));
counter = new ComputeBuffer(4, Marshal.SizeOf(typeof(uint)), ComputeBufferType.IndirectArguments);
counter.SetData(new int[] { 0, 1, 0, 0 });
emitCounter = new ComputeBuffer(4, Marshal.SizeOf(typeof(uint)), ComputeBufferType.IndirectArguments);
emitCounter.SetData(new int[] { 0, 1, 0, 0 });
argsBuffer = new ComputeBuffer(5, Marshal.SizeOf(typeof(uint)), ComputeBufferType.IndirectArguments);
GameObject o = GameObject.CreatePrimitive(PrimitiveType.Quad);
mesh = o.GetComponent <MeshFilter>().sharedMesh;
GameObject.DestroyImmediate(o);
uint[] argsData = new uint[] { mesh.GetIndexCount(0), 0, 0, 0, 0 };
argsBuffer.SetData(argsData);
computeShader = (ComputeShader)Resources.Load("VerletDebrisSystem");
computeShader.SetFloat("DT", timestep);
computeShader.SetVector("Gravity", new Vector2(0, -98.1f));
computeShader.SetFloat("Damping", 0.5f);
computeShader.SetVector("_TerrainDistanceFieldScale", terrainSystem.terrainDistanceFieldScale);
computeShader.SetFloat("_TerrainDistanceFieldMultiplier", terrainSystem.terrainDistanceFieldMultiplier);
int initKernel = computeShader.FindKernel("Init");
computeShader.SetInt("Width", positionsBuffer.count);
computeShader.SetBuffer(initKernel, "PositionsWRITE", positionsBuffer);
computeShader.SetBuffer(initKernel, "VelocitiesWRITE", velocitiesBuffer);
computeShader.SetBuffer(initKernel, "Lifetimes", lifetimesBuffer);
computeShader.SetBuffer(initKernel, "Dead", deadBuffer);
computeShader.Dispatch(initKernel, Groups(maxNumParticles), 1, 1);
hash = new GridHash(bounds, maxNumParticles, 1);
computeShader.SetFloat("HashScale", hash.InvCellSize);
computeShader.SetVector("HashSize", hash.Bounds.size);
computeShader.SetVector("HashTranslate", hash.Bounds.min);
}
public LeapfrogDebrisSystem(int maxNumParticles, float timestep, int maxIterations, Material material, Bounds bounds, TerrainSystem terrainSystem)
{
this.timestep = timestep;
this.maxIterations = maxIterations;
this.material = material;
this.bounds = bounds;
this.terrainSystem = terrainSystem;
explosionsBuffer = new ComputeBuffer(16, Marshal.SizeOf(typeof(Vector4)), ComputeBufferType.Default);
positionsBuffers = new ComputeBuffer[2];
positionsBuffers[0] = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
positionsBuffers[1] = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
velocitiesBuffers = new ComputeBuffer[2];
velocitiesBuffers[0] = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
velocitiesBuffers[1] = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
lifetimesBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)));
motionsBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(float)));
colorsBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector4)));
deadBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(uint)), ComputeBufferType.Append);
deadBuffer.SetCounterValue(0);
aliveBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(uint)), ComputeBufferType.Append);
aliveBuffer.SetCounterValue(0);
addTerrainBuffer = new ComputeBuffer(maxNumParticles, Marshal.SizeOf(typeof(Vector2)), ComputeBufferType.Append);
addTerrainBuffer.SetCounterValue(0);
counter = new ComputeBuffer(4, Marshal.SizeOf(typeof(uint)), ComputeBufferType.IndirectArguments);
counter.SetData(new int[] { 0, 1, 0, 0 });
counterIndex = new ComputeBuffer(1, Marshal.SizeOf(typeof(uint)), ComputeBufferType.Raw);
emitCounter = new ComputeBuffer(4, Marshal.SizeOf(typeof(uint)), ComputeBufferType.IndirectArguments);
emitCounter.SetData(new uint[] { 0, 1, 0, 0 });
argsBuffer = new ComputeBuffer(5, Marshal.SizeOf(typeof(uint)), ComputeBufferType.IndirectArguments);
GameObject o = GameObject.CreatePrimitive(PrimitiveType.Quad);
mesh = o.GetComponent <MeshFilter>().sharedMesh;
GameObject.DestroyImmediate(o);
uint[] argsData = new uint[] { mesh.GetIndexCount(0), 0, 0, 0, 0 };
argsBuffer.SetData(argsData);
computeShader = (ComputeShader)Resources.Load("LeapfrogDebrisSystem");
computeShader.SetFloat("DT", timestep);
computeShader.SetVector("Gravity", new Vector2(0, -98.1f));
computeShader.SetFloat("Damping", 0.99f);
computeShader.SetVector("_TerrainDistanceFieldScale", terrainSystem.terrainDistanceFieldScale);
computeShader.SetFloat("_TerrainDistanceFieldMultiplier", terrainSystem.terrainDistanceFieldMultiplier);
computeShader.SetVector("_TerrainSize", new Vector2(terrainSystem.width, terrainSystem.height));
Vector2 boundsMin = bounds.min;
Vector2 boundsMax = bounds.max;
Vector4 boundsVector = new Vector4(boundsMin.x, boundsMin.y, boundsMax.x, boundsMax.y);
computeShader.SetVector("Bounds", boundsVector);
int initKernel = computeShader.FindKernel("Init");
computeShader.SetInt("Width", maxNumParticles);
computeShader.SetBuffer(initKernel, "Lifetimes", lifetimesBuffer);
computeShader.SetBuffer(initKernel, "Dead", deadBuffer);
computeShader.Dispatch(initKernel, Groups(maxNumParticles), 1, 1);
hash = new GridHash(bounds, maxNumParticles, 1.1283791671f);
computeShader.SetFloat("HashScale", hash.InvCellSize);
computeShader.SetVector("HashSize", hash.Bounds.size);
computeShader.SetVector("HashTranslate", hash.Bounds.min);
}
