public void UpdateNoise()
{
ValidateParamaters();
CreateTexture(ref shapeTexture, shapeResolution, shapeNoiseName);
CreateTexture(ref detailTexture, detailResolution, detailNoiseName);
if (updateNoise && noiseCompute)
{
var timer = System.Diagnostics.Stopwatch.StartNew();
updateNoise = false;
WorleyNoiseSettings activeSettings = ActiveSettings;
if (activeSettings == null)
{
return;
}
buffersToRelease = new List <ComputeBuffer> ();
int activeTextureResolution = ActiveTexture.width;
// Set values:
noiseCompute.SetFloat("persistence", activeSettings.persistence);
noiseCompute.SetInt("resolution", activeTextureResolution);
noiseCompute.SetVector("channelMask", ChannelMask);
// Set noise gen kernel data:
noiseCompute.SetTexture(0, "Result", ActiveTexture);
var minMaxBuffer = CreateBuffer(new int[] { int.MaxValue, 0 }, sizeof(int), "minMax", 0);
UpdateWorley(ActiveSettings);
noiseCompute.SetTexture(0, "Result", ActiveTexture);
//var noiseValuesBuffer = CreateBuffer (activeNoiseValues, sizeof (float) * 4, "values");
// Dispatch noise gen kernel
int numThreadGroups = Mathf.CeilToInt(activeTextureResolution / (float)computeThreadGroupSize);
noiseCompute.Dispatch(0, numThreadGroups, numThreadGroups, numThreadGroups);
// Set normalization kernel data:
noiseCompute.SetBuffer(1, "minMax", minMaxBuffer);
noiseCompute.SetTexture(1, "Result", ActiveTexture);
// Dispatch normalization kernel
noiseCompute.Dispatch(1, numThreadGroups, numThreadGroups, numThreadGroups);
if (logComputeTime)
{
// Get minmax data just to force main thread to wait until compute shaders are finished.
// This allows us to measure the execution time.
var minMax = new int[2];
minMaxBuffer.GetData(minMax);
Debug.Log($"Noise Generation: {timer.ElapsedMilliseconds}ms");
}
// Release buffers
foreach (var buffer in buffersToRelease)
{
buffer.Release();
}
}
}
void UpdateWorley(WorleyNoiseSettings settings)
{
var prng = new System.Random(settings.seed);
CreateWorleyPointsBuffer(prng, settings.numDivisionsA, "pointsA");
CreateWorleyPointsBuffer(prng, settings.numDivisionsB, "pointsB");
CreateWorleyPointsBuffer(prng, settings.numDivisionsC, "pointsC");
noiseCompute.SetInt("numCellsA", settings.numDivisionsA);
noiseCompute.SetInt("numCellsB", settings.numDivisionsB);
noiseCompute.SetInt("numCellsC", settings.numDivisionsC);
noiseCompute.SetBool("invertNoise", settings.invert);
noiseCompute.SetInt("tile", settings.tile);
}
