protected virtual void Start()
{
int bufSize;
system = Build(vertexCount, out bufSize);
system.transform.parent = transform;
system.transform.localPosition = Vector3.zero;
system.transform.localScale = Vector3.one;
system.transform.localRotation = Quaternion.identity;
mrts = new MRT[2];
for (int i = 0, n = mrts.Length; i < n; i++)
{
mrts[i] = new MRT(bufSize, bufSize);
}
particleUpdateMat.SetFloat("_SimulationTexSize", bufSize);
particleUpdateMat.SetFloat("_SimulationTexDeltaSize", 1f / bufSize);
particleUpdateMat.SetFloat("_SimulationParticleCount", bufSize * bufSize);
SetProps();
ReadMRT.Render(particleUpdateMat, 0); // init
// set display mat
particleDisplayMat.SetTexture(_PositionBufferKey, ReadMRT.RenderTextures[0]);
particleDisplayMat.SetTexture(_VelocityBufferKey, ReadMRT.RenderTextures[1]);
particleDisplayMat.SetTexture(_RotationBufferKey, ReadMRT.RenderTextures[2]);
}
public virtual void Simulate(MRT read, MRT write)
{
var buffers = read.RenderTextures;
material.SetTexture(_PositionBufferKey, buffers[0]);
material.SetTexture(_VelocityBufferKey, buffers[1]);
material.SetTexture(_RotationBufferKey, buffers[2]);
write.Render(material);
}
void Start()
{
cam = Camera.main;
material = GetComponent <Renderer>().material;
timeOffset = Random.Range(0f, 100f);
var mesh = OctahedronSphereCreator.Create(subdivisions, radius);
mesh = Utils.MeshDisperser.Disperse(mesh);
// set vertices center
var tangents = new Vector4[mesh.vertexCount];
for (int i = 0, n = tangents.Length; i < n; i += 3)
{
var v0 = mesh.vertices[i];
var v1 = mesh.vertices[i + 1];
var v2 = mesh.vertices[i + 2];
tangents[i] = tangents[i + 1] = tangents[i + 2] = (v0 + v1 + v2) / 3f;
}
mesh.tangents = tangents;
int count = mesh.triangles.Length / 3;
mrts = new MRT[2];
for (int i = 0, n = mrts.Length; i < n; i++)
{
mrts[i] = new MRT(count, 1);
}
ReadMRT.Render(updateMaterial, 0); // init
material.SetTexture(_PositionBufferKey, ReadMRT.RenderTextures[0]);
material.SetTexture(_VelocityBufferKey, ReadMRT.RenderTextures[1]);
material.SetTexture(_RotationBufferKey, ReadMRT.RenderTextures[2]);
GetComponent <MeshFilter>().mesh = mesh;
}