public void Build( bool stencilShadows, int logLevel )
{
// Create a node
this.node = this.sceneMgr.RootSceneNode.CreateChildSceneNode( name, this.center );
this.node.AttachObject( this );
// We need to create enough LOD buckets to deal with the highest LOD
// we encountered in all the meshes queued
for ( ushort lod = 0; lod < this.lodValues.Count; ++lod )
{
var lodBucket = new LODBucket( this, lod, (float)this.lodValues[ lod ] );
this.lodBucketList.Add( lodBucket );
// Now iterate over the meshes and assign to LODs
// LOD bucket will pick the right LOD to use
IEnumerator iter = this.queuedSubMeshes.GetEnumerator();
while ( iter.MoveNext() )
{
var qsm = (QueuedSubMesh)iter.Current;
lodBucket.Assign( qsm, lod );
}
// now build
lodBucket.Build( stencilShadows, logLevel );
}
// Do we need to build an edge list?
if ( stencilShadows )
{
var eb = new EdgeListBuilder();
//int vertexSet = 0;
foreach ( var lod in this.lodBucketList )
{
foreach ( var mat in lod.MaterialBucketMap.Values )
{
// Check if we have vertex programs here
var t = mat.Material.GetBestTechnique();
if ( null != t )
{
var p = t.GetPass( 0 );
if ( null != p )
{
if ( p.HasVertexProgram )
{
this.vertexProgramInUse = true;
}
}
}
foreach ( var geom in mat.GeometryBucketList )
{
// Check we're dealing with 16-bit indexes here
// Since stencil shadows can only deal with 16-bit
// More than that and stencil is probably too CPU-heavy
// in any case
if ( geom.IndexData.indexBuffer.Type != IndexType.Size16 )
{
throw new AxiomException( "Only 16-bit indexes allowed when using stencil shadows" );
}
eb.AddVertexData( geom.VertexData );
eb.AddIndexData( geom.IndexData );
}
}
}
this.edgeList = eb.Build();
}
}
/// <summary>
/// Builds an edge list for this mesh, which can be used for generating a shadow volume
/// among other things.
/// </summary>
public void BuildEdgeList()
{
if ( this._edgeListsBuilt )
{
return;
}
// loop over LODs
for ( var lodIndex = 0; lodIndex < this.meshLodUsageList.Count; lodIndex++ )
{
// use getLodLevel to enforce loading of manual mesh lods
var usage = GetLodLevel( lodIndex );
if ( this._isLodManual && lodIndex != 0 )
{
// Delegate edge building to manual mesh
// It should have already built its own edge list while loading
usage.EdgeData = usage.ManualMesh.GetEdgeList( 0 );
}
else
{
var builder = new EdgeListBuilder();
// Add this mesh's vertex and index data structures
AddVertexAndIndexSets( builder, lodIndex );
// build the edge data from all accumulate vertex/index buffers
usage.EdgeData = builder.Build();
}
}
this._edgeListsBuilt = true;
}
// Returns the number of geometry buckets
public int Build(bool stencilShadows, bool logDetails)
{
int bucketCount = 0;
// Create a node
node = sceneMgr.RootSceneNode.CreateChildSceneNode(name, center);
node.AttachObject(this);
// We need to create enough LOD buckets to deal with the highest LOD
// we encountered in all the meshes queued
for(ushort lod = 0; lod < lodSquaredDistances.Count; ++lod)
{
LODBucket lodBucket = new LODBucket(this, lod, (float)lodSquaredDistances[lod]);
lodBucketList.Add(lodBucket);
// Now iterate over the meshes and assign to LODs
// LOD bucket will pick the right LOD to use
foreach (QueuedSubMesh qsm in queuedSubMeshes)
lodBucket.Assign(qsm, lod);
// now build
bucketCount += lodBucket.Build(stencilShadows, logDetails);
}
// Do we need to build an edge list?
if(stencilShadows)
{
EdgeListBuilder eb = new EdgeListBuilder();
foreach (LODBucket lod in lodBucketList) {
foreach(MaterialBucket mat in lod.MaterialBucketMap.Values) {
// Check if we have vertex programs here
Technique t = mat.Material.GetBestTechnique();
if(null != t)
{
Pass p = t.GetPass(0);
if(null != p)
{
if(p.HasVertexProgram)
{
vertexProgramInUse = true;
}
}
}
foreach (GeometryBucket geom in mat.GeometryBucketList) {
bucketCount++;
// Check we're dealing with 16-bit indexes here
// Since stencil shadows can only deal with 16-bit
// More than that and stencil is probably too CPU-heavy
// in any case
if(geom.IndexData.indexBuffer.Type != IndexType.Size16) throw new AxiomException("Only 16-bit indexes allowed when using stencil shadows");
eb.AddVertexData(geom.VertexData);
eb.AddIndexData(geom.IndexData);
}
}
}
edgeList = eb.Build();
}
return bucketCount;
}
