private unsafe bool FrustumCull(ref Cluster.GpuCluster cluster, ref CBMeshBatch cbMesh)
{
Vector3 position = cluster.BoundCenter;
Vector3 extent = cluster.BoundExtent;
Vector3 minPos = position - extent;
Vector3 maxPos = position + extent;
if (cbMesh.GpuDrivenFrustumMinPoint.X > maxPos.X ||
cbMesh.GpuDrivenFrustumMinPoint.Y > maxPos.Y ||
cbMesh.GpuDrivenFrustumMinPoint.Z > maxPos.Z)
{
return(true);
}
if (cbMesh.GpuDrivenFrustumMaxPoint.X < minPos.X ||
cbMesh.GpuDrivenFrustumMaxPoint.Y < minPos.Y ||
cbMesh.GpuDrivenFrustumMaxPoint.Z < minPos.Z)
{
return(true);
}
fixed(CBMeshBatch *pCBuffer = &cbMesh)
{
Vector4 *planes = (Vector4 *)pCBuffer;
Vector3 absNormal = new Vector3();
for (uint i = 0; i < 6; ++i)
{
absNormal.X = (planes->X > 0) ? (planes->X) : (-planes->X);
absNormal.Y = (planes->Y > 0) ? (planes->Y) : (-planes->Y);
absNormal.Z = (planes->Z > 0) ? (planes->Z) : (-planes->Z);
Vector3 *planeNormal = (Vector3 *)planes;
float dist = Vector3.Dot(position, *planeNormal) + planes->W;
float df = Vector3.Dot(absNormal, extent);
if (dist - df > 0)
{
return(true);
}
planes++;
}
}
return(false);
}
public void AddMeshInstance(CRenderContext rc, Graphics.Mesh.CGfxMesh mesh, RName clusterName, GamePlay.Component.GPlacementComponent placement)
{
var worldMatrix = placement.WorldMatrix;
uint instStart = (uint)mGpuInstanceDatas.Count;
for (int i = 0; i < mesh.MtlMeshArray.Length; i++)
{
var data = new GpuMeshInstanceData();
data.VTMaterialId.x = 1;//(uint)GetOrAddMaterialId(mesh.MtlMeshArray[i].MtlInst);
data.Matrix = worldMatrix;
Matrix.Invert(ref data.Matrix, out data.InvMatrix);
data.Matrix.Transpose();
data.InvMatrix.Transpose();
mGpuInstanceDatas.Add(data);
//var module = CEngine.Instance.GetCurrentModule();
//module.World.AddActor();
}
uint indexOffset;
Cluster.ClusteredMesh cluster = GetClusteredMesh(rc, clusterName, out indexOffset);
for (int i = 0; i < cluster.ClusterDatas.Count; i++)
{
Cluster.GpuCluster gpuCluster = cluster.ClusterDatas[i];
gpuCluster.InstanceId += instStart;
gpuCluster.StartFaceIndex += indexOffset / 3;
BoundingBox tmpBox = new BoundingBox(gpuCluster.BoundCenter - gpuCluster.BoundExtent, gpuCluster.BoundCenter + gpuCluster.BoundExtent);
tmpBox = BoundingBox.Transform(ref tmpBox, ref worldMatrix);
gpuCluster.BoundCenter = tmpBox.GetCenter();
gpuCluster.BoundExtent = tmpBox.GetSize() * 0.5f;
mGpuClusters.Add(gpuCluster);
}
}
