private void HandleHeightBuffer(Vector3 viewPoint)
{
if (viewPoint.x >= _minVisiblePos.x && viewPoint.x <= _maxVisiblePos.x &&
viewPoint.z >= _minVisiblePos.y && viewPoint.z <= _maxVisiblePos.y)
{
if (_heightMapBuffer == null)
{
if (_heightMapData != null)
{
_heightMapBuffer = new ComputeBuffer((_heightMapData.Length + 1) / 2, Constants.StrideSizeUint);
_heightMapBuffer.SetData(_heightMapData);
}
else
{
_heightMapBuffer = new ComputeBuffer((_compactHeightMapDataLength + 3) / 4, Constants.StrideSizeUint);
IntPtr p = new IntPtr(_compactHeightMapData.GetBytesIntPtr().ToInt64() + _compactHeightMapDataStart);
_heightMapBuffer.SetDataWithIntPtr(p, _compactHeightMapDataLength);
}
}
}
else if (viewPoint.x < _minVisiblePos.x - Constants.DetailDisableBufferLength ||
viewPoint.x > _maxVisiblePos.x + Constants.DetailDisableBufferLength ||
viewPoint.z < _minVisiblePos.y - Constants.DetailDisableBufferLength ||
viewPoint.z > _maxVisiblePos.y + Constants.DetailDisableBufferLength)
{
if (_heightMapBuffer != null)
{
_heightMapBuffer.Release();
_heightMapBuffer = null;
}
}
}
public override void BuildBuffer(ComputeBuffer heightBuffer)
{
var kernelId = _instantiationShader.FindKernel(Constants.CsKernel.Common);
ComputeBuffer countInUnit = new ComputeBuffer((_resolution * _resolution + 1) / 2, Constants.StrideSizeUint);
int[] initialCounter = { 0 };
_instantiationShader.SetBuffer(kernelId, Constants.TerrainVariable.HeightMapData, heightBuffer);
_instantiationShader.SetBuffer(kernelId, Constants.DetailVariable.DividedDetailData, countInUnit);
_terrainProperty.SetDetailInstantiationProperty(_instantiationShader);
var count = _totalCountInLayer.Length;
for (int i = 0; i < count; ++i)
{
if (_totalCountInLayer[i] == 0)
{
continue;
}
if (_transform[i] == null)
{
_transform[i] = new ComputeBuffer(_totalCountInLayer[i], Constants.StrideSizeMatrix4x4);
_normal[i] = new ComputeBuffer(_totalCountInLayer[i], Constants.StrideSizeFloat3);
_color[i] = new ComputeBuffer(_totalCountInLayer[i], Constants.StrideSizeFloat3);
_count[i] = new ComputeBuffer(1, Constants.StrideSizeInt);
}
_countInCpu[i] = -1;
_count[i].SetData(initialCounter);
_instantiationShader.SetBuffer(kernelId, Constants.DetailVariable.TransformData, _transform[i]);
_instantiationShader.SetBuffer(kernelId, Constants.DetailVariable.NormalData, _normal[i]);
_instantiationShader.SetBuffer(kernelId, Constants.DetailVariable.ColorData, _color[i]);
_instantiationShader.SetBuffer(kernelId, Constants.ShaderVariable.CounterData, _count[i]);
if (_countInNode != null)
{
countInUnit.SetData(_countInNode[i]);
}
else
{
IntPtr p = new IntPtr(_compactCountInNode.WholeData.GetBytesIntPtr().ToInt64() + _compactCountInNode.StartIndices[i]);
countInUnit.SetDataWithIntPtr(p, _compactCountInNode.Lengths[i]);
}
_detailProperties[i].SetDetailInstantiationProperty(_instantiationShader, _index);
_instantiationShader.Dispatch(kernelId,
_resolution / Constants.DetailInstantiationThreadCount,
_resolution / Constants.DetailInstantiationThreadCount,
1);
}
countInUnit.Release();
}
