public static CustomRenderTexture GetPreViewNoise2DRT(Noise2DType type, int noiseID, bool isChange)
{
if (crtList[noiseID] == null)
{
CustomRenderTexture rt = GenerateNoise2DRT(type, 5, 256, 256);
crtList[noiseID] = rt;
crtMatList[noiseID] = rt.material;
switch (type)
{
case Noise2DType.PerilinNoise2D:
crtList[noiseID].material.SetFloatArray("_PERM", permutation);
crtList[noiseID].material.SetFloatArray("_G", garray);
break;
case Noise2DType.PerilinNoise2D_Tileable:
crtList[noiseID].material.SetFloatArray("_PERM", permutation);
crtList[noiseID].material.SetFloatArray("_G4D", g4Darray);
break;
}
}
else if (isChange)
{
crtList[noiseID].material.shader = Shader.Find(noise2DDict[type]);
switch (type)
{
case Noise2DType.PerilinNoise2D:
crtList[noiseID].material.SetFloatArray("_PERM", permutation);
crtList[noiseID].material.SetFloatArray("_G", garray);
break;
case Noise2DType.PerilinNoise2D_Tileable:
crtList[noiseID].material.SetFloatArray("_PERM", permutation);
crtList[noiseID].material.SetFloatArray("_G4D", g4Darray);
break;
}
}
return(crtList[noiseID]);
}
public static CustomRenderTexture GenerateNoise2DRT(Noise2DType type, float scale, int width, int height, int depth = 128)
{
CustomRenderTexture noiseRT = new CustomRenderTexture(width, height);
noiseRT.format = RenderTextureFormat.RFloat;
noiseRT.wrapMode = TextureWrapMode.Repeat;
noiseRT.filterMode = FilterMode.Bilinear;
noiseRT.updateMode = CustomRenderTextureUpdateMode.Realtime;
noiseRT.initializationMode = CustomRenderTextureUpdateMode.Realtime;
noiseRT.initializationSource = CustomRenderTextureInitializationSource.Material;
noiseRT.enableRandomWrite = true;
noiseRT.dimension = UnityEngine.Rendering.TextureDimension.Tex2D;
noiseRT.material = new Material(Shader.Find(noise2DDict[type]));
noiseRT.initializationMaterial = noiseRT.material;
noiseRT.shaderPass = 0;
noiseRT.material.SetFloat("_Scale", scale);
noiseRT.Initialize();
noiseRT.Update();
noiseRT.Create();
return(noiseRT);
}