void UpdateBones()
{
var s1 = Vector3.one;
var data = new GPUBone[bones.Count];
var offset = transform.localToWorldMatrix;
for (int i = 0, n = bones.Count; i < n; i++)
{
var local = locals[i]; // initial local transform
var global = globals[i]; // initial global transform
var current = bones[i]; // current transform
var bone = new GPUBone(global.T, global.R, global.S);
// var curLocalM = Matrix4x4.TRS(current.transform.localPosition, current.transform.localRotation, current.transform.localScale);
// var diff = (curLocalM * local.IM);
var curGlobalM = Matrix4x4.TRS(current.transform.position, current.transform.rotation, current.transform.lossyScale);
var diff = ((offset.inverse * curGlobalM) * local.IM);
offset = offset * (diff * local.M);
bone.combined = offset * global.IM;
data[i] = bone;
}
boneBuffer.SetData(data);
}
void DebugBones()
{
var bones = new GPUBone[boneBuffer.count];
boneBuffer.GetData(bones);
for (int i = 0, n = bones.Length; i < n; i++)
{
var bone = bones[i];
var r = bone.rotation;
if (
float.IsNaN(r.m00) ||
float.IsNaN(r.m01) ||
float.IsNaN(r.m02) ||
float.IsNaN(r.m03) ||
float.IsNaN(r.m10) ||
float.IsNaN(r.m11) ||
float.IsNaN(r.m12) ||
float.IsNaN(r.m13) ||
float.IsNaN(r.m20) ||
float.IsNaN(r.m21) ||
float.IsNaN(r.m22) ||
float.IsNaN(r.m23) ||
float.IsNaN(r.m30) ||
float.IsNaN(r.m31) ||
float.IsNaN(r.m32) ||
float.IsNaN(r.m33)
)
{
Debug.Log(r);
}
}
}
protected override GPUBone[] BuildBones()
{
CheckInit();
var vertices = mesh.vertices;
var bones = new GPUBone[instancesCount * boneCount];
var rot = transform.rotation;
var scale = transform.lossyScale;
for (int y = 0; y < instancesCount; y++)
{
var ioffset = y * boneCount;
for (int x = 0; x < boneCount; x++)
{
var p = new Vector3(center.x, max.y - unitLength * x, center.z);
bones[ioffset + x] = new GPUBone(transform.TransformPoint(p), rot, scale);
}
}
return(bones);
}
protected override GPUBone[] BuildBones()
{
var bounds = mesh.bounds;
Vector3 min = bounds.min, max = bounds.max;
var unit = (max.y - min.y) / (boneCount - 1);
var vertices = mesh.vertices;
var bones = new GPUBone[instancesCount * boneCount];
var rot = transform.rotation;
var scale = transform.lossyScale;
for (int y = 0; y < instancesCount; y++)
{
var ioffset = y * boneCount;
for (int x = 0; x < boneCount; x++)
{
var p = new Vector3(bounds.center.x, max.y - unit * x, bounds.center.z);
// keep world offset transform
bones[ioffset + x] = new GPUBone(transform.TransformPoint(p), rot, scale);
}
}
return(bones);
}
