Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//
//=============================================================================//
//
// mpivrad.cpp
//
#include <windows.h>
#include <conio.h>
#include "vrad.h"
#include "physdll.h"
#include "lightmap.h"
#include "tier1/strtools.h"
#include "radial.h"
#include "utlbuffer.h"
#include "pacifier.h"
#include "messbuf.h"
#include "bsplib.h"
#include "consolewnd.h"
#include "vismat.h"
#include "vmpi_filesystem.h"
#include "vmpi_dispatch.h"
#include "utllinkedlist.h"
#include "vmpi.h"
#include "mpi_stats.h"
#include "vmpi_distribute_work.h"
#include "vmpi_tools_shared.h"
CUtlVector<char> g_LightResultsFilename;
extern int total_transfer;
extern int max_transfer;
extern void BuildVisLeafs(int);
extern void BuildPatchLights( int facenum );
// Handle VRAD packets.
bool VRAD_DispatchFn( MessageBuffer *pBuf, int iSource, int iPacketID )
{
switch( pBuf->data[1] )
{
case VMPI_SUBPACKETID_PLIGHTDATA_RESULTS:
{
const char *pFilename = &pBuf->data[2];
g_LightResultsFilename.CopyArray( pFilename, strlen( pFilename ) + 1 );
return true;
}
default:
return false;
}
}
CDispatchReg g_VRADDispatchReg( VMPI_VRAD_PACKET_ID, VRAD_DispatchFn ); // register to handle the messages we want
CDispatchReg g_DistributeWorkReg( VMPI_DISTRIBUTEWORK_PACKETID, DistributeWorkDispatch );
void VRAD_SetupMPI( int &argc, char **&argv )
{
CmdLib_AtCleanup( VMPI_Stats_Term );
//
// Preliminary check -mpi flag
//
if ( !VMPI_FindArg( argc, argv, "-mpi", "" ) && !VMPI_FindArg( argc, argv, VMPI_GetParamString( mpi_Worker ), "" ) )
return;
// Force local mode?
VMPIRunMode mode;
if ( VMPI_FindArg( argc, argv, VMPI_GetParamString( mpi_Local ), "" ) )
mode = VMPI_RUN_LOCAL;
else
mode = VMPI_RUN_NETWORKED;
VMPI_Stats_InstallSpewHook();
//
// Extract mpi specific arguments
//
Msg( "Initializing VMPI...\n" );
if ( !VMPI_Init(
argc,
argv,
"dependency_info_vrad.txt",
HandleMPIDisconnect,
mode
) )
{
Error( "MPI_Init failed." );
}
StatsDB_InitStatsDatabase( argc, argv, "dbinfo_vrad.txt" );
}
//-----------------------------------------
//
// Run BuildFaceLights across all available processing nodes
// and collect the results.
//
CCycleCount g_CPUTime;
template<class T> void WriteValues( MessageBuffer *pmb, T const *pSrc, int nNumValues)
{
pmb->write(pSrc, sizeof( pSrc[0]) * nNumValues );
}
template<class T> int ReadValues( MessageBuffer *pmb, T *pDest, int nNumValues)
{
return pmb->read( pDest, sizeof( pDest[0]) * nNumValues );
}
//--------------------------------------------------
// Serialize face data
void SerializeFace( MessageBuffer * pmb, int facenum )
{
int i, n;
dface_t * f = &g_pFaces[facenum];
facelight_t * fl = &facelight[facenum];
pmb->write(f, sizeof(dface_t));
pmb->write(fl, sizeof(facelight_t));
WriteValues( pmb, fl->sample, fl->numsamples);
//
// Write the light information
//
for (i=0; i<MAXLIGHTMAPS; ++i) {
for (n=0; n<NUM_BUMP_VECTS+1; ++n) {
if (fl->light[i][n])
{
WriteValues( pmb, fl->light[i][n], fl->numsamples);
}
}
}
if (fl->luxel)
WriteValues( pmb, fl->luxel, fl->numluxels);
if (fl->luxelNormals)
WriteValues( pmb, fl->luxelNormals, fl->numluxels);
}
//--------------------------------------------------
// UnSerialize face data
//
void UnSerializeFace( MessageBuffer * pmb, int facenum, int iSource )
{
int i, n;
dface_t * f = &g_pFaces[facenum];
facelight_t * fl = &facelight[facenum];
if (pmb->read(f, sizeof(dface_t)) < 0)
Error("UnSerializeFace - invalid dface_t from %s (mb len: %d, offset: %d)", VMPI_GetMachineName( iSource ), pmb->getLen(), pmb->getOffset() );
if (pmb->read(fl, sizeof(facelight_t)) < 0)
Error("UnSerializeFace - invalid facelight_t from %s (mb len: %d, offset: %d)", VMPI_GetMachineName( iSource ), pmb->getLen(), pmb->getOffset() );
fl->sample = (sample_t *) calloc(fl->numsamples, sizeof(sample_t));
if (pmb->read(fl->sample, sizeof(sample_t) * fl->numsamples) < 0)
Error("UnSerializeFace - invalid sample_t from %s (mb len: %d, offset: %d, fl->numsamples: %d)", VMPI_GetMachineName( iSource ), pmb->getLen(), pmb->getOffset(), fl->numsamples );
//
// Read the light information
//
for (i=0; i<MAXLIGHTMAPS; ++i) {
for (n=0; n<NUM_BUMP_VECTS+1; ++n) {
if (fl->light[i][n])
{
fl->light[i][n] = (LightingValue_t *) calloc( fl->numsamples, sizeof(LightingValue_t ) );
if ( ReadValues( pmb, fl->light[i][n], fl->numsamples) < 0)
Error("UnSerializeFace - invalid fl->light from %s (mb len: %d, offset: %d)", VMPI_GetMachineName( iSource ), pmb->getLen(), pmb->getOffset() );
}
}
}
if (fl->luxel) {
fl->luxel = (Vector *) calloc(fl->numluxels, sizeof(Vector));
if (ReadValues( pmb, fl->luxel, fl->numluxels) < 0)
Error("UnSerializeFace - invalid fl->luxel from %s (mb len: %d, offset: %d)", VMPI_GetMachineName( iSource ), pmb->getLen(), pmb->getOffset() );
}
if (fl->luxelNormals) {
fl->luxelNormals = (Vector *) calloc(fl->numluxels, sizeof( Vector ));
if ( ReadValues( pmb, fl->luxelNormals, fl->numluxels) < 0)
Error("UnSerializeFace - invalid fl->luxelNormals from %s (mb len: %d, offset: %d)", VMPI_GetMachineName( iSource ), pmb->getLen(), pmb->getOffset() );
}
}
void MPI_ReceiveFaceResults( uint64 iWorkUnit, MessageBuffer *pBuf, int iWorker )
{
UnSerializeFace( pBuf, iWorkUnit, iWorker );
}
void MPI_ProcessFaces( int iThread, uint64 iWorkUnit, MessageBuffer *pBuf )
{
// Do BuildFacelights on the face.
CTimeAdder adder( &g_CPUTime );
BuildFacelights( iThread, iWorkUnit );
// Send the results.
if ( pBuf )
{
SerializeFace( pBuf, iWorkUnit );
}
}
void RunMPIBuildFacelights()
{
g_CPUTime.Init();
Msg( "%-20s ", "BuildFaceLights:" );
if ( g_bMPIMaster )
{
StartPacifier("");
}
VMPI_SetCurrentStage( "RunMPIBuildFaceLights" );
double elapsed = DistributeWork(
numfaces,
VMPI_DISTRIBUTEWORK_PACKETID,
MPI_ProcessFaces,
MPI_ReceiveFaceResults );
if ( g_bMPIMaster )
{
EndPacifier(false);
Msg( " (%d)\n", (int)elapsed );
}
if ( g_bMPIMaster )
{
//
// BuildPatchLights is normally called from BuildFacelights(),
// but in MPI mode we have the master do the calculation
// We might be able to speed this up by doing while the master
// is idling in the above loop. Wouldn't want to slow down the
// handing out of work - maybe another thread?
//
for ( int i=0; i < numfaces; ++i )
{
BuildPatchLights(i);
}
}
else
{
if ( g_iVMPIVerboseLevel >= 1 )
Msg( "\n\n%.1f%% CPU utilization during BuildFaceLights\n\n", ( g_CPUTime.GetSeconds() * 100 / elapsed ) );
}
}
//-----------------------------------------
//
// Run BuildVisLeafs across all available processing nodes
// and collect the results.
//
// This function is called when the master receives results back from a worker.
void MPI_ReceiveVisLeafsResults( uint64 iWorkUnit, MessageBuffer *pBuf, int iWorker )
{
int patchesInCluster = 0;
pBuf->read(&patchesInCluster, sizeof(patchesInCluster));
for ( int k=0; k < patchesInCluster; ++k )
{
int patchnum = 0;
pBuf->read(&patchnum, sizeof(patchnum));
CPatch * patch = &g_Patches[patchnum];
int numtransfers;
pBuf->read( &numtransfers, sizeof(numtransfers) );
patch->numtransfers = numtransfers;
if (numtransfers)
{
patch->transfers = new transfer_t[numtransfers];
pBuf->read(patch->transfers, numtransfers * sizeof(transfer_t));
}
total_transfer += numtransfers;
if (max_transfer < numtransfers)
max_transfer = numtransfers;
}
}
// Temporary variables used during callbacks. If we're going to be threadsafe, these
// should go in a structure and get passed around.
class CVMPIVisLeafsData
{
public:
MessageBuffer *m_pVisLeafsMB;
int m_nPatchesInCluster;
transfer_t *m_pBuildVisLeafsTransfers;
};
CVMPIVisLeafsData g_VMPIVisLeafsData[MAX_TOOL_THREADS+1];
// This is called by BuildVisLeafs_Cluster every time it finishes a patch.
// The results are appended to g_VisLeafsMB and sent back to the master when all clusters are done.
void MPI_AddPatchData( int iThread, int patchnum, CPatch *patch )
{
CVMPIVisLeafsData *pData = &g_VMPIVisLeafsData[iThread];
if ( pData->m_pVisLeafsMB )
{
// Add in results for this patch
++pData->m_nPatchesInCluster;
pData->m_pVisLeafsMB->write(&patchnum, sizeof(patchnum));
pData->m_pVisLeafsMB->write(&patch->numtransfers, sizeof(patch->numtransfers));
pData->m_pVisLeafsMB->write( patch->transfers, patch->numtransfers * sizeof(transfer_t) );
}
}
// This handles a work unit sent by the master. Each work unit here is a
// list of clusters.
void MPI_ProcessVisLeafs( int iThread, uint64 iWorkUnit, MessageBuffer *pBuf )
{
CTimeAdder adder( &g_CPUTime );
CVMPIVisLeafsData *pData = &g_VMPIVisLeafsData[iThread];
int iCluster = iWorkUnit;
// Start this cluster.
pData->m_nPatchesInCluster = 0;
pData->m_pVisLeafsMB = pBuf;
// Write a temp value in there. We overwrite it later.
int iSavePos = 0;
if ( pBuf )
{
iSavePos = pBuf->getLen();
pBuf->write( &pData->m_nPatchesInCluster, sizeof(pData->m_nPatchesInCluster) );
}
// Collect the results in MPI_AddPatchData.
BuildVisLeafs_Cluster( iThread, pData->m_pBuildVisLeafsTransfers, iCluster, MPI_AddPatchData );
// Now send the results back..
if ( pBuf )
{
pBuf->update( iSavePos, &pData->m_nPatchesInCluster, sizeof(pData->m_nPatchesInCluster) );
pData->m_pVisLeafsMB = NULL;
}
}
void RunMPIBuildVisLeafs()
{
g_CPUTime.Init();
Msg( "%-20s ", "BuildVisLeafs :" );
if ( g_bMPIMaster )
{
StartPacifier("");
}
memset( g_VMPIVisLeafsData, 0, sizeof( g_VMPIVisLeafsData ) );
if ( !g_bMPIMaster || VMPI_GetActiveWorkUnitDistributor() == k_eWorkUnitDistributor_SDK )
{
// Allocate space for the transfers for each thread.
for ( int i=0; i < numthreads; i++ )
{
g_VMPIVisLeafsData[i].m_pBuildVisLeafsTransfers = BuildVisLeafs_Start();
}
}
//
// Slaves ask for work via GetMPIBuildVisLeafWork()
// Results are returned in BuildVisRow()
//
VMPI_SetCurrentStage( "RunMPIBuildVisLeafs" );
double elapsed = DistributeWork(
dvis->numclusters,
VMPI_DISTRIBUTEWORK_PACKETID,
MPI_ProcessVisLeafs,
MPI_ReceiveVisLeafsResults );
// Free the transfers from each thread.
for ( int i=0; i < numthreads; i++ )
{
if ( g_VMPIVisLeafsData[i].m_pBuildVisLeafsTransfers )
BuildVisLeafs_End( g_VMPIVisLeafsData[i].m_pBuildVisLeafsTransfers );
}
if ( g_bMPIMaster )
{
EndPacifier(false);
Msg( " (%d)\n", (int)elapsed );
}
else
{
if ( g_iVMPIVerboseLevel >= 1 )
Msg( "%.1f%% CPU utilization during PortalFlow\n", (g_CPUTime.GetSeconds() * 100.0f / elapsed) / numthreads );
}
}
void VMPI_DistributeLightData()
{
if ( !g_bUseMPI )
return;
if ( g_bMPIMaster )
{
const char *pVirtualFilename = "--plightdata--";
CUtlBuffer lightFaceData;
// write out the light data
lightFaceData.EnsureCapacity( pdlightdata->Count() + (numfaces * (MAXLIGHTMAPS+sizeof(int))) );
Q_memcpy( lightFaceData.PeekPut(), pdlightdata->Base(), pdlightdata->Count() );
lightFaceData.SeekPut( CUtlBuffer::SEEK_HEAD, pdlightdata->Count() );
// write out the relevant face info into the stream
for ( int i = 0; i < numfaces; i++ )
{
for ( int j = 0; j < MAXLIGHTMAPS; j++ )
{
lightFaceData.PutChar(g_pFaces[i].styles[j]);
}
lightFaceData.PutInt(g_pFaces[i].lightofs);
}
VMPI_FileSystem_CreateVirtualFile( pVirtualFilename, lightFaceData.Base(), lightFaceData.TellMaxPut() );
char cPacketID[2] = { VMPI_VRAD_PACKET_ID, VMPI_SUBPACKETID_PLIGHTDATA_RESULTS };
VMPI_Send2Chunks( cPacketID, sizeof( cPacketID ), pVirtualFilename, strlen( pVirtualFilename ) + 1, VMPI_PERSISTENT );
}
else
{
VMPI_SetCurrentStage( "VMPI_DistributeLightData" );
// Wait until we've received the filename from the master.
while ( g_LightResultsFilename.Count() == 0 )
{
VMPI_DispatchNextMessage();
}
// Open
FileHandle_t fp = g_pFileSystem->Open( g_LightResultsFilename.Base(), "rb", VMPI_VIRTUAL_FILES_PATH_ID );
if ( !fp )
Error( "Can't open '%s' to read lighting info.", g_LightResultsFilename.Base() );
int size = g_pFileSystem->Size( fp );
int faceSize = (numfaces*(MAXLIGHTMAPS+sizeof(int)));
if ( size > faceSize )
{
int lightSize = size - faceSize;
CUtlBuffer faceData;
pdlightdata->EnsureCount( lightSize );
faceData.EnsureCapacity( faceSize );
g_pFileSystem->Read( pdlightdata->Base(), lightSize, fp );
g_pFileSystem->Read( faceData.Base(), faceSize, fp );
g_pFileSystem->Close( fp );
faceData.SeekPut( CUtlBuffer::SEEK_HEAD, faceSize );
// write out the face data
for ( int i = 0; i < numfaces; i++ )
{
for ( int j = 0; j < MAXLIGHTMAPS; j++ )
{
g_pFaces[i].styles[j] = faceData.GetChar();
}
g_pFaces[i].lightofs = faceData.GetInt();
}
}
}
}