/// <summary>
/// Calculates how much ground should go in sediment flow aka force-based erosion
/// Transfers m_terrainField to m_sedimentField basing on
/// m_waterVelocity, m_sedimentCapacity, m_dissolvingConstant,
/// m_depositionConstant, m_tiltAngle, m_minTiltAngle
/// Also calculates m_tiltAngle
/// </summary>
private void DissolveAndDeposition(DoubleDataTexture terrainField, Vector4 dissolvingConstant, float minTiltAngle, int TERRAIN_LAYERS)
{
link.m_tiltAngleMat.SetFloat("_TexSize", size);
link.m_tiltAngleMat.SetFloat("_Layers", TERRAIN_LAYERS);
link.m_tiltAngleMat.SetTexture("_TerrainField", terrainField.READ);
Graphics.Blit(null, tiltAngle, link.m_tiltAngleMat);
link.dissolutionAndDepositionMat.SetTexture("_TerrainField", terrainField.READ);
link.dissolutionAndDepositionMat.SetTexture("_SedimentField", sedimentField.READ);
link.dissolutionAndDepositionMat.SetTexture("_VelocityField", velocity.READ);
link.dissolutionAndDepositionMat.SetTexture("_WaterField", main.READ);
link.dissolutionAndDepositionMat.SetTexture("_TiltAngle", tiltAngle);
link.dissolutionAndDepositionMat.SetFloat("_MinTiltAngle", minTiltAngle);
link.dissolutionAndDepositionMat.SetFloat("_SedimentCapacity", sedimentCapacity);
link.dissolutionAndDepositionMat.SetVector("_DissolvingConstant", dissolvingConstant);
link.dissolutionAndDepositionMat.SetFloat("_DepositionConstant", depositionConstant);
link.dissolutionAndDepositionMat.SetFloat("_Layers", (float)TERRAIN_LAYERS);
link.dissolutionAndDepositionMat.SetFloat("_DissolveLimit", dissolveLimit); //nash added it
RenderTexture[] terrainAndSediment = new RenderTexture[3] {
terrainField.WRITE, sedimentField.WRITE, sedimentDeposition.WRITE
};
RTUtility.MultiTargetBlit(terrainAndSediment, link.dissolutionAndDepositionMat);
terrainField.Swap();
sedimentField.Swap();
sedimentDeposition.Swap();
}
public Layer(string name, int size, float damping, ErosionSim link, float overwriteFluidity, float fluidity)
{
main = new DoubleDataTexture(name, size, RenderTextureFormat.ARGBFloat, FilterMode.Point); // was RFloat
main.ClearColor();
outFlow = new DoubleDataTexture(name, size, RenderTextureFormat.ARGBFloat, FilterMode.Point); //was ARGBHalf
outFlow.ClearColor();
this.damping = damping;
this.link = link;
this.size = size;
this.overwriteFluidity = overwriteFluidity;
this.fluidity = fluidity;
}
private void InitLayers()
{
terrainField = new DoubleDataTexture("Terrain Height Field", TEX_SIZE, RenderTextureFormat.ARGBFloat, FilterMode.Point);
regolithField = new DoubleDataTexture("Regolith Field", TEX_SIZE, RenderTextureFormat.RFloat, FilterMode.Point);
regolithOutFlow = new DoubleDataTexture("Regolith outflow", TEX_SIZE, RenderTextureFormat.ARGBHalf, FilterMode.Point);
slippageHeight = DoubleDataTexture.Create("Slippage Height", TEX_SIZE, RenderTextureFormat.RHalf, FilterMode.Point); // was RHalf
slippageOutflow = DoubleDataTexture.Create("Slippage Outflow", TEX_SIZE, RenderTextureFormat.ARGBHalf, FilterMode.Point); // was ARGBHalf
magmaVelocity = new DoubleDataTexture("Magma Velocity", TEX_SIZE, RenderTextureFormat.ARGBHalf, FilterMode.Bilinear); // was RGHalf
}
static DoubleDataTexture()
{
tempRTARGB = DoubleDataTexture.Create("tempRTARGB", 1, RenderTextureFormat.ARGBFloat, FilterMode.Point);
tempT2DRGBA = new Texture2D(1, 1, TextureFormat.RGBAFloat, false);
tempT2DRGBA.wrapMode = TextureWrapMode.Clamp;
tempT2DRGBA.filterMode = FilterMode.Point;
tempRTRFloat = DoubleDataTexture.Create("tempRTRFloat", 1, RenderTextureFormat.RFloat, FilterMode.Point);
tempT2DRFloat = new Texture2D(1, 1, TextureFormat.RFloat, false);
tempT2DRFloat.wrapMode = TextureWrapMode.Clamp;
tempT2DRFloat.filterMode = FilterMode.Point;
LoadMaterials();
}
public LayerWithErosion(string name, int size, float viscosity, ErosionSim link) : base(name, size, viscosity, link)
{
//waterField = new DoubleDataTexture("Water Field", TEX_SIZE, RenderTextureFormat.RFloat, FilterMode.Point);
//waterOutFlow = new DoubleDataTexture("Water outflow", TEX_SIZE, RenderTextureFormat.ARGBHalf, FilterMode.Point);
sedimentField = new DoubleDataTexture("Sediment Field", size, RenderTextureFormat.ARGBFloat, FilterMode.Bilinear); // was RHalf
sedimentField.ClearColor();
advectSediment = new DoubleDataTexture("Sediment Advection", size, RenderTextureFormat.RHalf, FilterMode.Bilinear); // was RHalf
advectSediment.ClearColor();
sedimentDeposition = new DoubleDataTexture("Sediment Deposition", size, RenderTextureFormat.ARGBFloat, FilterMode.Point); // was RHalf
sedimentDeposition.ClearColor();
tiltAngle = DoubleDataTexture.Create("Tilt Angle", size, RenderTextureFormat.RHalf, FilterMode.Point);// was RHalf
//sedimentOutFlow = DoubleDataTexture.Create("sedimentOutFlow", size, RenderTextureFormat.ARGBHalf, FilterMode.Point);// was ARGBHalf
//sedimentOutFlow.ClearColor();
}
private void OnDestroy()
{
Destroy(slippageHeight);
Destroy(slippageOutflow);
water.OnDestroy();
lava.OnDestroy();
DoubleDataTexture.DestroyAll();
int numGrids = TOTAL_GRID_SIZE / GRID_SIZE + 1;
for (int x = 0; x < numGrids; x++)
{
for (int y = 0; y < numGrids; y++)
{
int idx = x + y * numGrids;
Destroy(gridLand[idx]);
Destroy(gridWater[idx]);
//Destroy(gridLava[idx]);
}
}
}
static public RenderTexture Load(string path)
{
Texture2D tex = Texture2DExtensions.LoadPNG(path);
if (tex == null)
{
Debug.Log("Can't load " + path + " texture");
return(null);
}
var changeFormatTexture = new Texture2D(tex.width, tex.width, TextureFormat.RGBAFloat, false);
changeFormatTexture.SetPixels(tex.GetPixels());
changeFormatTexture.Apply();
var res = DoubleDataTexture.Create("Loaded", tex.width, RenderTextureFormat.ARGBFloat, FilterMode.Point);// was RHalf
Graphics.CopyTexture(changeFormatTexture, 0, 0, res, 0, 0);
GameObject.Destroy(tex);
GameObject.Destroy(changeFormatTexture);
return(res);
}
private void InitMaps()
{
terrainField.ClearColor();
//waterOutFlow.ClearColor();
//waterVelocity.ClearColor();
//advectSediment.ClearColor();
//waterField.ClearColor();
//sedimentField.ClearColor();
regolithField.ClearColor();
regolithOutFlow.ClearColor();
//sedimentDeposition.ClearColor();
magmaVelocity.ClearColor();
DoubleDataTexture noiseTex;
noiseTex = new DoubleDataTexture("", TEX_SIZE, RenderTextureFormat.RFloat, FilterMode.Bilinear);
GPUPerlinNoise perlin = new GPUPerlinNoise(m_seed);
perlin.LoadResourcesFor2DNoise();
m_noiseMat.SetTexture("_PermTable1D", perlin.PermutationTable1D);
m_noiseMat.SetTexture("_Gradient2D", perlin.Gradient2D);
for (int j = 0; j < TERRAIN_LAYERS; j++)
{
m_noiseMat.SetFloat("_Offset", m_offset[j]);
float amp = 0.5f;
float freq = m_frequency[j];
//Must clear noise from last pass
noiseTex.ClearColor();
//write noise into texture with the settings for this layer
for (int i = 0; i < m_octaves[j]; i++)
{
m_noiseMat.SetFloat("_Frequency", freq);
m_noiseMat.SetFloat("_Amp", amp);
m_noiseMat.SetFloat("_Pass", (float)i);
Graphics.Blit(noiseTex.READ, noiseTex.WRITE, m_noiseMat, (int)m_layerStyle[j]);
noiseTex.Swap();
freq *= m_lacunarity[j];
amp *= m_gain[j];
}
float useAbs = 0.0f;
if (m_finalNosieIsAbs[j])
{
useAbs = 1.0f;
}
//Mask the layers that we dont want to write into
Vector4 mask = new Vector4(0.0f, 0.0f, 0.0f, 0.0f);
mask[j] = 1.0f;
m_initTerrainMat.SetFloat("_Amp", m_amp[j]);
m_initTerrainMat.SetFloat("_UseAbs", useAbs);
m_initTerrainMat.SetVector("_Mask", mask);
m_initTerrainMat.SetTexture("_NoiseTex", noiseTex.READ);
m_initTerrainMat.SetFloat("_Height", TERRAIN_HEIGHT);
//Apply the noise for this layer to the terrain field
Graphics.Blit(terrainField.READ, terrainField.WRITE, m_initTerrainMat);
terrainField.Swap();
}
//dont need this tex anymore
noiseTex.Destroy();
}
internal void SimulateErosion(DoubleDataTexture terrainField, Vector4 dissolvingConstant, float minTiltAngle, int TERRAIN_LAYERS, float TIME_STEP)
{
DissolveAndDeposition(terrainField, dissolvingConstant, minTiltAngle, TERRAIN_LAYERS);
AdvectSediment(TIME_STEP);
//AlternativeAdvectSediment();
}
public LayerWithVelocity(string name, int size, float viscosity, ErosionSim link) : base(name, size, viscosity, link, 0.96f, 4181f, 1f, 1f)
{
velocity = new DoubleDataTexture("Water Velocity", size, RenderTextureFormat.ARGBFloat, FilterMode.Bilinear);// was RGHalf
velocity.ClearColor();
}
