// uses GPU to accumulate layers of noise
public static void Execute(CNoiseLayer layer, RenderTexture noiseRT, CBoundingVolume volume, bool flip, float planetRadius)
{
CGlobal global = CGlobal.GetInstance();
int matidx = 0;
float amp = 1.0f;
float frequency = layer.m_Frequency;
switch (layer.m_LayerType)
{
case NoiseLayerType.Cell:
{
Debug.Log("[ETHEREA1] NoiseLayerType.Cell is not implemented yet! Please select Ridged or Turbulence instead.");
break;
}
case NoiseLayerType.Ridged:
{
matidx = 0;
break;
}
case NoiseLayerType.Turbulence:
{
matidx = 1;
break;
}
}
for (int i = 0; i < layer.m_Octaves; i++)
{
RenderTexture.active = noiseRT;
global.GenNoiseMaterial[matidx].SetFloat("_planetRadius", planetRadius);
global.GenNoiseMaterial[matidx].SetVector("_noiseOffset", layer.m_NoiseOffset);
global.GenNoiseMaterial[matidx].SetFloat("_offset", layer.m_Offset);
global.GenNoiseMaterial[matidx].SetFloat("_hpower", layer.m_HPower);
global.GenNoiseMaterial[matidx].SetTexture("_permTexture", global.PermTex);
global.GenNoiseMaterial[matidx].SetTexture("_simplexTexture", global.SimplexTex);
global.GenNoiseMaterial[matidx].SetFloat("_contribution", layer.m_Contribution);
global.GenNoiseMaterial[matidx].SetTexture("_previousPass", noiseRT);
global.GenNoiseMaterial[matidx].SetFloat("_amp", amp);
global.GenNoiseMaterial[matidx].SetFloat("_frequency", frequency);
// ### render with extended volume coordinates but with normal uv volume coordinates
//global.RenderQuadVolumeExCoord(noiseRT.width, noiseRT.height, global.GenNoiseMaterial[matidx], volume, flip);
global.RenderQuadVolume(noiseRT.width, noiseRT.height, global.GenNoiseMaterial[matidx], volume, flip);
frequency *= layer.m_Lacunarity;
amp *= layer.m_Persistence;
RenderTexture.active = null;
}
}
public static void ShapeNoise(RenderTexture noiseRT, Texture2D shapeTex, CBoundingVolume volume)
{
CGlobal global = CGlobal.GetInstance();
RenderTexture.active = noiseRT;
global.ShapeNoiseMaterial.SetTexture("_hmap", noiseRT);
global.ShapeNoiseMaterial.SetTexture("_shape", shapeTex);
global.RenderQuadVolume(noiseRT.width, noiseRT.height, global.ShapeNoiseMaterial, volume, false);
RenderTexture.active = null;
}