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]);
}
void Start()
{
int bufSize;
Vector3[] meshVertices;
system = Build(vertexCount, out bufSize, out meshVertices);
system.transform.parent = transform;
mrts = new MRT[3];
for (int i = 0, n = mrts.Length; i < n; i++)
{
mrts[i] = new MRT(bufSize, bufSize);
}
// create a render texture and transfer the initial particle postions to the update shader
initialPos = new RenderTexture(bufSize, bufSize, 24);
initialPos.format = RenderTextureFormat.ARGBFloat;
RenderTexture.active = initialPos;
Texture2D tempTexture = new Texture2D(initialPos.width, initialPos.height, TextureFormat.RGBAFloat, false);
tempTexture.ReadPixels(new Rect(0, 0, initialPos.width, initialPos.height), 0, 0, false);
for (int c = 0, i = 0; c < initialPos.width; c++)
{
for (int r = 0; r < initialPos.height; r++, i++)
{
tempTexture.SetPixel(r, c, new Color(meshVertices[i].x, meshVertices[i].y, meshVertices[i].z, 1));
//Debug.Log(meshVertices[i].x.ToString()+" "+meshVertices[i].y.ToString()+" "+meshVertices[i].z.ToString() );
}
}
tempTexture.Apply();
RenderTexture.active = null;
Graphics.Blit(tempTexture, initialPos);
SPH_UpdateMat.SetTexture("_PosTex", initialPos);
SPH_UpdateDensityMat.SetTexture("_PosTex", initialPos);
mrts[2].Render(SPH_UpdateDensityMat);
var pressureBuffers = mrts[2].RenderTextures;
SPH_UpdateMat.SetTexture("_DensityTex", pressureBuffers[0]);
SPH_UpdateMat.SetTexture("_PressureTex", pressureBuffers[1]);
ReadMRT.Render(SPH_UpdateMat);
var buffers = ReadMRT.RenderTextures;
RenderTexture.active = pressureBuffers[0];
tempTexture = new Texture2D(buffers[1].width, buffers[1].height, TextureFormat.RGBAFloat, false);
tempTexture.ReadPixels(new Rect(0, 0, buffers[1].width, buffers[1].height), 0, 0, false);
for (int i = 0; i < tempTexture.width; i++)
{
for (int j = 0; j < tempTexture.height; j++)
{
//Debug.Log(tempTexture.GetPixel(j, i).r.ToString() + " " + tempTexture.GetPixel(j, i).g.ToString() + " " + tempTexture.GetPixel(j, i).b.ToString());
}
}
RenderTexture.active = null;
}
// Use this for initialization
void Start()
{
plane = GetComponent <MeshFilter>().mesh;
int bufSize = Mathf.CeilToInt(Mathf.Sqrt(plane.vertexCount * 1.0f));
mrts = new MRT[2];
for (int i = 0, n = mrts.Length; i < n; i++)
{
mrts[i] = new MRT(bufSize, bufSize);
}
ReadMRT.Render(particleUpdateMat, 0); // init
}
void Start()
{
int bufSize;
system = Build(vertexCount, out bufSize);
system.transform.parent = transform;
mrts = new MRT[2];
for (int i = 0, n = mrts.Length; i < n; i++)
{
mrts[i] = new MRT(bufSize, bufSize);
}
ReadMRT.Render(particleUpdateMat, 0); // init
}
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;
}
