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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================
#include "mdllib_common.h"
#include "mdllib_stripinfo.h"
#include "mdllib_utils.h"
#include "studio.h"
#include "optimize.h"
#include "smartptr.h"
bool CMdlLib::CreateNewStripInfo( IMdlStripInfo **ppStripInfo )
{
if ( !ppStripInfo )
return false;
if ( *ppStripInfo )
{
CMdlStripInfo *pMdlStripInfo = ( CMdlStripInfo * ) ( *ppStripInfo );
pMdlStripInfo->Reset();
return true;
}
*ppStripInfo = new CMdlStripInfo;
return ( NULL != *ppStripInfo );
}
//
// StripModelBuffers
// The main function that strips the model buffers
// mdlBuffer - mdl buffer, updated, no size change
// vvdBuffer - vvd buffer, updated, size reduced
// vtxBuffer - vtx buffer, updated, size reduced
// ppStripInfo - if nonzero on return will be filled with the stripping info
//
bool CMdlLib::StripModelBuffers( CUtlBuffer &mdlBuffer, CUtlBuffer &vvdBuffer, CUtlBuffer &vtxBuffer, IMdlStripInfo **ppStripInfo )
{
DECLARE_PTR( byte, mdl, BYTE_OFF_PTR( mdlBuffer.Base(), mdlBuffer.TellGet() ) );
DECLARE_PTR( byte, vvd, BYTE_OFF_PTR( vvdBuffer.Base(), vvdBuffer.TellGet() ) );
DECLARE_PTR( byte, vtx, BYTE_OFF_PTR( vtxBuffer.Base(), vtxBuffer.TellGet() ) );
int vvdLength = vvdBuffer.TellPut() - vvdBuffer.TellGet();
int vtxLength = vtxBuffer.TellPut() - vtxBuffer.TellGet();
//
// ===================
// =================== Modify the checksum and check if further processing is needed
// ===================
//
DECLARE_PTR( studiohdr_t, mdlHdr, mdl );
DECLARE_PTR( vertexFileHeader_t, vvdHdr, vvd );
DECLARE_PTR( OptimizedModel::FileHeader_t, vtxHdr, vtx );
long checksumOld = mdlHdr->checksum;
// Don't do anything if the checksums don't match
if ( ( mdlHdr->checksum != vvdHdr->checksum ) ||
( mdlHdr->checksum != vtxHdr->checkSum ) )
{
DLog( "mdllib", 1, "ERROR: [StripModelBuffers] checksum mismatch!\n" );
return false;
}
// Modify the checksums
mdlHdr->checksum ^= ( mdlHdr->checksum * 123457 );
vvdHdr->checksum ^= ( vvdHdr->checksum * 123457 );
vtxHdr->checkSum ^= ( vtxHdr->checkSum * 123457 );
long checksumNew = mdlHdr->checksum;
// Allocate the model stripping info
CMdlStripInfo msi;
CMdlStripInfo *pMsi;
if ( ppStripInfo )
{
if ( *ppStripInfo )
{
pMsi = ( CMdlStripInfo * ) ( *ppStripInfo );
pMsi->Reset();
}
else
{
*ppStripInfo = pMsi = new CMdlStripInfo;
}
}
else
{
pMsi = &msi;
}
// Set the basic stripping info settings
pMsi->m_lChecksumOld = checksumOld;
pMsi->m_lChecksumNew = checksumNew;
//
// Early outs
//
if ( !( mdlHdr->flags & STUDIOHDR_FLAGS_STATIC_PROP ) )
{
DLog( "mdllib", 2, "No special stripping - the model is not a static prop.\n" );
pMsi->m_eMode = CMdlStripInfo::MODE_NO_CHANGE;
return true;
}
if ( vvdHdr->numLODs <= 1 )
{
DLog( "mdllib", 2, "No special stripping - the model has only %d lod(s).\n", vvdHdr->numLODs );
pMsi->m_eMode = CMdlStripInfo::MODE_NO_CHANGE;
return true;
}
if ( mdlHdr->numbones != 1 )
{
DLog( "mdllib", 2, "No special stripping - the model has %d bone(s).\n", mdlHdr->numbones );
pMsi->m_eMode = CMdlStripInfo::MODE_NO_CHANGE;
return true;
}
// Otherwise do stripping
pMsi->m_eMode = CMdlStripInfo::MODE_STRIP_LOD_1N;
//
// ===================
// =================== Build out table of LOD0 vertexes
// ===================
//
CGrowableBitVec &mapVtxIndex = pMsi->m_vtxVerts;
ITERATE_CHILDREN2( OptimizedModel::BodyPartHeader_t, mstudiobodyparts_t, vtxBodyPart, mdlBodyPart, vtxHdr, mdlHdr, pBodyPart, pBodypart, numBodyParts )
ITERATE_CHILDREN2( OptimizedModel::ModelHeader_t, mstudiomodel_t, vtxModel, mdlModel, vtxBodyPart, mdlBodyPart, pModel, pModel, numModels )
OptimizedModel::ModelLODHeader_t *vtxLod = CHILD_AT( vtxModel, pLOD, 0 );
ITERATE_CHILDREN2( OptimizedModel::MeshHeader_t, mstudiomesh_t, vtxMesh, mdlMesh, vtxLod, mdlModel, pMesh, pMesh, numMeshes )
ITERATE_CHILDREN( OptimizedModel::StripGroupHeader_t, vtxStripGroup, vtxMesh, pStripGroup, numStripGroups )
ITERATE_CHILDREN( OptimizedModel::StripHeader_t, vtxStrip, vtxStripGroup, pStrip, numStrips )
if ( !( vtxStrip->flags & OptimizedModel::STRIP_IS_TRILIST ) )
continue;
for ( int i = 0; i < vtxStrip->numIndices; ++ i )
{
unsigned short *vtxIdx = CHILD_AT( vtxStripGroup, pIndex, vtxStrip->indexOffset + i );
OptimizedModel::Vertex_t *vtxVertex = CHILD_AT( vtxStripGroup, pVertex, *vtxIdx );
unsigned short usIdx = vtxVertex->origMeshVertID + mdlMesh->vertexoffset;
mapVtxIndex.GrowSetBit( usIdx );
}
ITERATE_END
ITERATE_END
ITERATE_END
ITERATE_END
ITERATE_END
//
// Now having the table of which vertexes to keep we will construct a remapping table
//
CUtlSortVector< unsigned short, CLessSimple< unsigned short > > &srcIndices = pMsi->m_vtxIndices;
srcIndices.EnsureCapacity( mapVtxIndex.GetNumBits() );
for ( int iBit = -1; ( iBit = mapVtxIndex.FindNextSetBit( iBit + 1 ) ) >= 0; )
srcIndices.InsertNoSort( ( unsigned short ) ( unsigned int ) iBit );
srcIndices.RedoSort(); // - doesn't do anything, just validates the vector
// Now we have the following questions answered:
// - for every index we know if it belongs to lod0 "mapVtxIndex.IsBitSet( oldVertIdx )"
// - for every new vertex we know its old index "srcIndices[ newVertIdx ]"
// - for every old vertex if it's in lod0 we know its new index "srcIndices.Find( oldVertIdx )"
//
// ===================
// =================== Process MDL file
// ===================
//
//
// Update vertex counts
//
int mdlNumVerticesOld = 0;
CUtlSortVector< CMdlStripInfo::MdlRangeItem, CLessSimple< CMdlStripInfo::MdlRangeItem > > &arrMdlOffsets = pMsi->m_vtxMdlOffsets;
ITERATE_CHILDREN( mstudiobodyparts_t, mdlBodyPart, mdlHdr, pBodypart, numbodyparts )
ITERATE_CHILDREN( mstudiomodel_t, mdlModel, mdlBodyPart, pModel, nummodels )
DLog( "mdllib", 3, " Stripped %d lod(s).\n", vvdHdr->numLODs - 1 ),
DLog( "mdllib", 3, " Stripped %d vertexes (was: %d, now: %d).\n", mdlModel->numvertices - srcIndices.Count(), mdlModel->numvertices, srcIndices.Count() );
mdlNumVerticesOld = mdlModel->numvertices;
mdlModel->numvertices = srcIndices.Count();
mdlModel->vertexdata.pVertexData = BYTE_OFF_PTR( vvdHdr, vvdHdr->vertexDataStart );
mdlModel->vertexdata.pTangentData = BYTE_OFF_PTR( vvdHdr, vvdHdr->tangentDataStart );
ITERATE_CHILDREN( mstudiomesh_t, mdlMesh, mdlModel, pMesh, nummeshes )
CMdlStripInfo::MdlRangeItem mdlRangeItem( mdlMesh->vertexoffset, mdlMesh->numvertices );
mdlMesh->vertexdata.modelvertexdata = &mdlModel->vertexdata;
mdlMesh->numvertices = srcIndices.FindLess( mdlMesh->vertexoffset + mdlMesh->numvertices );
mdlMesh->vertexoffset = srcIndices.FindLess( mdlMesh->vertexoffset ) + 1;
mdlMesh->numvertices -= mdlMesh->vertexoffset - 1;
mdlRangeItem.m_offNew = mdlMesh->vertexoffset;
mdlRangeItem.m_numNew = mdlMesh->numvertices;
arrMdlOffsets.Insert( mdlRangeItem );
// Truncate the number of vertexes
for ( int k = 0; k < ARRAYSIZE( mdlMesh->vertexdata.numLODVertexes ); ++ k )
mdlMesh->vertexdata.numLODVertexes[ k ] = mdlMesh->numvertices;
ITERATE_END
ITERATE_END
ITERATE_END
//
// Update bones not to mention anything below LOD0
//
ITERATE_CHILDREN( mstudiobone_t, mdlBone, mdlHdr, pBone, numbones )
mdlBone->flags &= ( BONE_USED_BY_VERTEX_LOD0 | ~BONE_USED_BY_VERTEX_MASK );
ITERATE_END
DLog( "mdllib", 3, " Updated %d bone(s).\n", mdlHdr->numbones );
//
// ===================
// =================== Process VVD file
// ===================
//
vvdHdr->numLODs = 1;
for ( int k = 0; k < ARRAYSIZE( vvdHdr->numLODVertexes ); ++ k )
vvdHdr->numLODVertexes[ k ] = srcIndices.Count();
DECLARE_PTR( mstudiovertex_t, vvdVertexSrc, BYTE_OFF_PTR( vvdHdr, vvdHdr->vertexDataStart ) );
DECLARE_PTR( Vector4D, vvdTangentSrc, vvdHdr->tangentDataStart ? BYTE_OFF_PTR( vvdHdr, vvdHdr->tangentDataStart ) : NULL );
// Apply the fixups first of all
if ( vvdHdr->numFixups )
{
CArrayAutoPtr< byte > memTempVVD( new byte[ vvdLength ] );
DECLARE_PTR( mstudiovertex_t, vvdVertexNew, BYTE_OFF_PTR( memTempVVD.Get(), vvdHdr->vertexDataStart ) );
DECLARE_PTR( Vector4D, vvdTangentNew, BYTE_OFF_PTR( memTempVVD.Get(), vvdHdr->tangentDataStart ) );
DECLARE_PTR( vertexFileFixup_t, vvdFixup, BYTE_OFF_PTR( vvdHdr, vvdHdr->fixupTableStart ) );
for ( int k = 0; k < vvdHdr->numFixups; ++ k )
{
memcpy( vvdVertexNew, vvdVertexSrc + vvdFixup[ k ].sourceVertexID, vvdFixup[ k ].numVertexes * sizeof( *vvdVertexNew ) );
vvdVertexNew += vvdFixup[ k ].numVertexes;
if ( vvdTangentSrc )
{
memcpy( vvdTangentNew, vvdTangentSrc + vvdFixup[ k ].sourceVertexID, vvdFixup[ k ].numVertexes * sizeof( *vvdTangentNew ) );
vvdTangentNew += vvdFixup[ k ].numVertexes;
}
}
// Move back the memory after fixups were applied
vvdVertexSrc ? memcpy( vvdVertexSrc, BYTE_OFF_PTR( memTempVVD.Get(), vvdHdr->vertexDataStart ), mdlNumVerticesOld * sizeof( *vvdVertexSrc ) ) : 0;
vvdTangentSrc ? memcpy( vvdTangentSrc, BYTE_OFF_PTR( memTempVVD.Get(), vvdHdr->tangentDataStart ), mdlNumVerticesOld * sizeof( *vvdTangentSrc ) ) : 0;
}
vvdHdr->vertexDataStart -= ALIGN_VALUE( sizeof( vertexFileFixup_t ) * vvdHdr->numFixups, 16 );
vvdHdr->numFixups = 0;
DECLARE_PTR( mstudiovertex_t, vvdVertexNew, BYTE_OFF_PTR( vvdHdr, vvdHdr->vertexDataStart ) );
for ( int k = 0; k < srcIndices.Count(); ++ k )
vvdVertexNew[ k ] = vvdVertexSrc[ srcIndices[ k ] ];
size_t newVertexDataSize = srcIndices.Count() * sizeof( mstudiovertex_t );
int vvdLengthOld = vvdLength;
vvdLength = vvdHdr->vertexDataStart + newVertexDataSize;
if ( vvdTangentSrc )
{
// Move the tangents
vvdHdr->tangentDataStart = vvdLength;
DECLARE_PTR( Vector4D, vvdTangentNew, BYTE_OFF_PTR( vvdHdr, vvdHdr->tangentDataStart ) );
for ( int k = 0; k < srcIndices.Count(); ++ k )
vvdTangentNew[ k ] = vvdTangentSrc[ srcIndices[ k ] ];
vvdLength += srcIndices.Count() * sizeof( Vector4D );
}
DLog( "mdllib", 3, " Stripped %d vvd bytes.\n", vvdLengthOld - vvdLength );
//
// ===================
// =================== Process VTX file
// ===================
//
size_t vtxOffIndexBuffer = ~size_t(0), vtxOffIndexBufferEnd = 0;
size_t vtxOffVertexBuffer = ~size_t(0), vtxOffVertexBufferEnd = 0;
CRemoveTracker vtxRemove;
CUtlVector< size_t > vtxOffIndex;
CUtlVector< size_t > vtxOffVertex;
vtxRemove.RemoveElements( CHILD_AT( vtxHdr, pMaterialReplacementList, 1 ), vtxHdr->numLODs - 1 );
ITERATE_CHILDREN( OptimizedModel::MaterialReplacementListHeader_t, vtxMatList, vtxHdr, pMaterialReplacementList, numLODs )
if ( !vtxMatList_idx ) continue;
vtxRemove.RemoveElements( CHILD_AT( vtxMatList, pMaterialReplacement, 0 ), vtxMatList->numReplacements );
ITERATE_CHILDREN( OptimizedModel::MaterialReplacementHeader_t, vtxMat, vtxMatList, pMaterialReplacement, numReplacements )
char const *szName = vtxMat->pMaterialReplacementName();
vtxRemove.RemoveElements( szName, szName ? strlen( szName ) + 1 : 0 );
ITERATE_END
ITERATE_END
ITERATE_CHILDREN( OptimizedModel::BodyPartHeader_t, vtxBodyPart, vtxHdr, pBodyPart, numBodyParts )
ITERATE_CHILDREN( OptimizedModel::ModelHeader_t, vtxModel, vtxBodyPart, pModel, numModels )
vtxRemove.RemoveElements( CHILD_AT( vtxModel, pLOD, 1 ), vtxModel->numLODs - 1 );
ITERATE_CHILDREN( OptimizedModel::ModelLODHeader_t, vtxLod, vtxModel, pLOD, numLODs )
if ( !vtxLod_idx ) // Process only lod1-N
continue;
vtxRemove.RemoveElements( CHILD_AT( vtxLod, pMesh, 0 ), vtxLod->numMeshes );
ITERATE_CHILDREN( OptimizedModel::MeshHeader_t, vtxMesh, vtxLod, pMesh, numMeshes )
vtxRemove.RemoveElements( CHILD_AT( vtxMesh, pStripGroup, 0 ), vtxMesh->numStripGroups );
ITERATE_CHILDREN( OptimizedModel::StripGroupHeader_t, vtxStripGroup, vtxMesh, pStripGroup, numStripGroups )
vtxRemove.RemoveElements( CHILD_AT( vtxStripGroup, pStrip, 0 ), vtxStripGroup->numStrips );
ITERATE_CHILDREN( OptimizedModel::StripHeader_t, vtxStrip, vtxStripGroup, pStrip, numStrips )
vtxRemove.RemoveElements( CHILD_AT( vtxStrip, pBoneStateChange, 0 ), vtxStrip->numBoneStateChanges );
ITERATE_END
ITERATE_END
ITERATE_END
ITERATE_END
// Use all lods to determine the ranges of vertex and index buffers.
// We rely on the fact that vertex and index buffers are laid out as one solid memory block for all lods.
ITERATE_CHILDREN( OptimizedModel::ModelLODHeader_t, vtxLod, vtxModel, pLOD, numLODs )
ITERATE_CHILDREN( OptimizedModel::MeshHeader_t, vtxMesh, vtxLod, pMesh, numMeshes )
ITERATE_CHILDREN( OptimizedModel::StripGroupHeader_t, vtxStripGroup, vtxMesh, pStripGroup, numStripGroups )
size_t offIndex = BYTE_DIFF_PTR( vtxHdr, CHILD_AT( vtxStripGroup, pIndex, 0 ) );
size_t offIndexEnd = BYTE_DIFF_PTR( vtxHdr, CHILD_AT( vtxStripGroup, pIndex, vtxStripGroup->numIndices ) );
size_t offVertex = BYTE_DIFF_PTR( vtxHdr, CHILD_AT( vtxStripGroup, pVertex, 0 ) );
size_t offVertexEnd = BYTE_DIFF_PTR( vtxHdr, CHILD_AT( vtxStripGroup, pVertex, vtxStripGroup->numVerts ) );
if ( offIndex < vtxOffIndexBuffer )
vtxOffIndexBuffer = offIndex;
if ( offIndexEnd > vtxOffIndexBufferEnd )
vtxOffIndexBufferEnd = offIndexEnd;
if ( offVertex < vtxOffVertexBuffer )
vtxOffVertexBuffer = offVertex;
if ( offVertexEnd > vtxOffVertexBufferEnd )
vtxOffVertexBufferEnd = offVertexEnd;
if ( !vtxLod_idx )
{
vtxOffIndex.AddToTail( offIndex );
vtxOffIndex.AddToTail( offIndexEnd );
vtxOffVertex.AddToTail( offVertex );
vtxOffVertex.AddToTail( offVertexEnd );
}
ITERATE_END
ITERATE_END
ITERATE_END
ITERATE_END
ITERATE_END
// Fixup the vertex buffer
DECLARE_PTR( OptimizedModel::Vertex_t, vtxVertexBuffer, BYTE_OFF_PTR( vtxHdr, vtxOffVertexBuffer ) );
DECLARE_PTR( OptimizedModel::Vertex_t, vtxVertexBufferEnd, BYTE_OFF_PTR( vtxHdr, vtxOffVertexBufferEnd ) );
CUtlVector< int > vtxIndexDeltas;
vtxIndexDeltas.EnsureCapacity( vtxVertexBufferEnd - vtxVertexBuffer );
int vtxNumVertexRemoved = 0;
for ( OptimizedModel::Vertex_t *vtxVertexElement = vtxVertexBuffer; vtxVertexElement < vtxVertexBufferEnd; ++ vtxVertexElement )
{
size_t const off = BYTE_DIFF_PTR( vtxHdr, vtxVertexElement );
bool bUsed = false;
for ( int k = 0; k < vtxOffVertex.Count(); k += 2 )
{
if ( off >= vtxOffVertex[ k ] && off < vtxOffVertex[ k + 1 ] )
{
bUsed = true;
break;
}
}
if ( !bUsed )
{
// Index is not in use
vtxRemove.RemoveElements( vtxVertexElement );
vtxIndexDeltas.AddToTail( 0 );
vtxNumVertexRemoved ++;
}
else
{ // Index is in use and must be remapped
// Find the mesh where this index belongs
int iMesh = arrMdlOffsets.FindLessOrEqual( CMdlStripInfo::MdlRangeItem( 0, 0, vtxVertexElement - vtxVertexBuffer ) );
Assert( iMesh >= 0 && iMesh < arrMdlOffsets.Count() );
CMdlStripInfo::MdlRangeItem &mri = arrMdlOffsets[ iMesh ];
Assert( ( vtxVertexElement - vtxVertexBuffer >= mri.m_offNew ) && ( vtxVertexElement - vtxVertexBuffer < mri.m_offNew + mri.m_numNew ) );
Assert( mapVtxIndex.IsBitSet( vtxVertexElement->origMeshVertID + mri.m_offOld ) );
vtxVertexElement->origMeshVertID = srcIndices.Find( vtxVertexElement->origMeshVertID + mri.m_offOld ) - mri.m_offNew;
Assert( vtxVertexElement->origMeshVertID < mri.m_numNew );
vtxIndexDeltas.AddToTail( vtxNumVertexRemoved );
}
}
// Fixup the index buffer
DECLARE_PTR( unsigned short, vtxIndexBuffer, BYTE_OFF_PTR( vtxHdr, vtxOffIndexBuffer ) );
DECLARE_PTR( unsigned short, vtxIndexBufferEnd, BYTE_OFF_PTR( vtxHdr, vtxOffIndexBufferEnd ) );
for ( unsigned short *vtxIndexElement = vtxIndexBuffer; vtxIndexElement < vtxIndexBufferEnd; ++ vtxIndexElement )
{
size_t const off = BYTE_DIFF_PTR( vtxHdr, vtxIndexElement );
bool bUsed = false;
for ( int k = 0; k < vtxOffIndex.Count(); k += 2 )
{
if ( off >= vtxOffIndex[ k ] && off < vtxOffIndex[ k + 1 ] )
{
bUsed = true;
break;
}
}
if ( !bUsed )
{
// Index is not in use
vtxRemove.RemoveElements( vtxIndexElement );
}
else
{
// Index is in use and must be remapped
*vtxIndexElement -= vtxIndexDeltas[ *vtxIndexElement ];
}
}
// By now should have scheduled all removal information
vtxRemove.Finalize();
DLog( "mdllib", 3, " Stripped %d vtx bytes.\n", vtxRemove.GetNumBytesRemoved() );
//
// Fixup all the offsets
//
ITERATE_CHILDREN( OptimizedModel::MaterialReplacementListHeader_t, vtxMatList, vtxHdr, pMaterialReplacementList, numLODs )
ITERATE_CHILDREN( OptimizedModel::MaterialReplacementHeader_t, vtxMat, vtxMatList, pMaterialReplacement, numReplacements )
vtxMat->replacementMaterialNameOffset = vtxRemove.ComputeOffset( vtxMat, vtxMat->replacementMaterialNameOffset );
ITERATE_END
vtxMatList->replacementOffset = vtxRemove.ComputeOffset( vtxMatList, vtxMatList->replacementOffset );
ITERATE_END
ITERATE_CHILDREN( OptimizedModel::BodyPartHeader_t, vtxBodyPart, vtxHdr, pBodyPart, numBodyParts )
ITERATE_CHILDREN( OptimizedModel::ModelHeader_t, vtxModel, vtxBodyPart, pModel, numModels )
ITERATE_CHILDREN( OptimizedModel::ModelLODHeader_t, vtxLod, vtxModel, pLOD, numLODs )
ITERATE_CHILDREN( OptimizedModel::MeshHeader_t, vtxMesh, vtxLod, pMesh, numMeshes )
ITERATE_CHILDREN( OptimizedModel::StripGroupHeader_t, vtxStripGroup, vtxMesh, pStripGroup, numStripGroups )
ITERATE_CHILDREN( OptimizedModel::StripHeader_t, vtxStrip, vtxStripGroup, pStrip, numStrips )
vtxStrip->indexOffset =
vtxRemove.ComputeOffset( vtxStripGroup, vtxStripGroup->indexOffset + vtxStrip->indexOffset ) -
vtxRemove.ComputeOffset( vtxStripGroup, vtxStripGroup->indexOffset );
vtxStrip->vertOffset =
vtxRemove.ComputeOffset( vtxStripGroup, vtxStripGroup->vertOffset + vtxStrip->vertOffset ) -
vtxRemove.ComputeOffset( vtxStripGroup, vtxStripGroup->vertOffset );
vtxStrip->boneStateChangeOffset = vtxRemove.ComputeOffset( vtxStrip, vtxStrip->boneStateChangeOffset );
ITERATE_END
vtxStripGroup->vertOffset = vtxRemove.ComputeOffset( vtxStripGroup, vtxStripGroup->vertOffset );
vtxStripGroup->indexOffset = vtxRemove.ComputeOffset( vtxStripGroup, vtxStripGroup->indexOffset );
vtxStripGroup->stripOffset = vtxRemove.ComputeOffset( vtxStripGroup, vtxStripGroup->stripOffset );
ITERATE_END
vtxMesh->stripGroupHeaderOffset = vtxRemove.ComputeOffset( vtxMesh, vtxMesh->stripGroupHeaderOffset );
ITERATE_END
vtxLod->meshOffset = vtxRemove.ComputeOffset( vtxLod, vtxLod->meshOffset );
ITERATE_END
vtxModel->lodOffset = vtxRemove.ComputeOffset( vtxModel, vtxModel->lodOffset );
vtxModel->numLODs = 1;
ITERATE_END
vtxBodyPart->modelOffset = vtxRemove.ComputeOffset( vtxBodyPart, vtxBodyPart->modelOffset );
ITERATE_END
vtxHdr->materialReplacementListOffset = vtxRemove.ComputeOffset( vtxHdr, vtxHdr->materialReplacementListOffset );
vtxHdr->bodyPartOffset = vtxRemove.ComputeOffset( vtxHdr, vtxHdr->bodyPartOffset );
vtxHdr->numLODs = 1;
// Perform final memory move
vtxRemove.MemMove( vtxHdr, vtxLength );
//
// ===================
// =================== Truncate buffer sizes
// ===================
//
vvdBuffer.SeekPut( CUtlBuffer::SEEK_CURRENT, vvdBuffer.TellGet() + vvdLength - vvdBuffer.TellPut() );
vtxBuffer.SeekPut( CUtlBuffer::SEEK_CURRENT, vtxBuffer.TellGet() + vtxLength - vtxBuffer.TellPut() );
DLog( "mdllib", 2, " Reduced model buffers by %d bytes.\n", vtxRemove.GetNumBytesRemoved() + ( vvdLengthOld - vvdLength ) );
// Done
return true;
}