protected override bool OnAttach(IRenderTechnique technique)
{
mtWeightsB = new StructuredBufferProxy(sizeof(float), false);
mtDeltasB = new ImmutableBufferProxy(sizeof(float) * 3, BindFlags.ShaderResource, ResourceOptionFlags.BufferStructured);
mtOffsetsB = new ImmutableBufferProxy(sizeof(int), BindFlags.ShaderResource, ResourceOptionFlags.BufferStructured);
return(true);
}
protected override void OnDetach()
{
MTWeightsB = null;
MTDeltasB = null;
MTOffsetsB = null;
cbMorphTarget.Detach();
base.OnDetach();
}
public bool InitializeMorphTargets(MorphTargetVertex[] targets, int pitch)
{
//The buffer is immutable, if it was already created, dont allow for recreation
if (MTDeltasB != null)
{
return(false);
}
//Setup buffer and keep track of data to update
MTDeltasB = new ImmutableBufferProxy(sizeof(float) * 3, BindFlags.ShaderResource, ResourceOptionFlags.BufferStructured);
MTOffsetsB = new ImmutableBufferProxy(sizeof(int), BindFlags.ShaderResource, ResourceOptionFlags.BufferStructured);
setDeltas = true;
//Setup arrays for morph target data
FastList <Vector3> mtdList = new FastList <Vector3>(targets.Length * 3);
morphTargetOffsets = new int[targets.Length];
//First element is always 0 delta
mtdList.Add(Vector3.Zero);
mtdList.Add(Vector3.Zero);
mtdList.Add(Vector3.Zero);
//Subsequent elements should never need 0 delta vertex
Vector3 zv = Vector3.Zero;
int current = 1;
for (int i = 0; i < targets.Length; i++)
{
//Skip if 0 delta
if (targets[i].deltaNormal == zv && targets[i].deltaPosition == zv && targets[i].deltaTangent == zv)
{
morphTargetOffsets[i] = 0;
}
else
{
morphTargetOffsets[i] = current * 3;
mtdList.Add(targets[i].deltaPosition);
mtdList.Add(targets[i].deltaNormal);
mtdList.Add(targets[i].deltaTangent);
current++;
}
}
morphTargetsDeltas = mtdList.ToArray();
//Set cbuffer data {int count, int pitch}
setCBuffer = true;
mtCount = targets.Length / pitch;
mtPitch = pitch;
return(true);
}