1HEADmaster

1 files changed, 2694 insertions, 0 deletions

diff --git a/utils/vrad/vradstaticprops.cpp b/utils/vrad/vradstaticprops.cpp
new file mode 100644
index 0000000..e4d92ed
--- /dev/null
+++ b/utils/vrad/vradstaticprops.cpp
@@ -0,0 +1,2694 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Revision: $
+// $NoKeywords: $
+//
+// This file contains code to allow us to associate client data with bsp leaves.
+//
+//=============================================================================//
+
+#include "vrad.h"
+#include "mathlib/vector.h"
+#include "UtlBuffer.h"
+#include "utlvector.h"
+#include "GameBSPFile.h"
+#include "BSPTreeData.h"
+#include "VPhysics_Interface.h"
+#include "Studio.h"
+#include "Optimize.h"
+#include "Bsplib.h"
+#include "CModel.h"
+#include "PhysDll.h"
+#include "phyfile.h"
+#include "collisionutils.h"
+#include "tier1/KeyValues.h"
+#include "pacifier.h"
+#include "materialsystem/imaterial.h"
+#include "materialsystem/hardwareverts.h"
+#include "materialsystem/hardwaretexels.h"
+#include "byteswap.h"
+#include "mpivrad.h"
+#include "vtf/vtf.h"
+#include "tier1/utldict.h"
+#include "tier1/utlsymbol.h"
+#include "bitmap/tgawriter.h"
+
+#include "messbuf.h"
+#include "vmpi.h"
+#include "vmpi_distribute_work.h"
+
+
+#define ALIGN_TO_POW2(x,y) (((x)+(y-1))&~(y-1))
+
+// identifies a vertex embedded in solid
+// lighting will be copied from nearest valid neighbor
+struct badVertex_t
+{
+	int		m_ColorVertex;
+	Vector	m_Position;
+	Vector	m_Normal;
+};
+
+// a final colored vertex
+struct colorVertex_t
+{
+	Vector	m_Color;
+	Vector	m_Position;
+	bool	m_bValid;
+};
+
+// a texel suitable for a model
+struct colorTexel_t
+{
+	Vector		m_Color;
+	Vector		m_WorldPosition;
+	Vector		m_WorldNormal;
+	float		m_fDistanceToTri; // If we are outside of the triangle, how far away is it?
+	bool		m_bValid;
+	bool		m_bPossiblyInteresting;
+
+};
+
+class CComputeStaticPropLightingResults
+{
+public:
+	~CComputeStaticPropLightingResults()
+	{
+		m_ColorVertsArrays.PurgeAndDeleteElements();
+		m_ColorTexelsArrays.PurgeAndDeleteElements();
+	}
+	
+	CUtlVector< CUtlVector<colorVertex_t>* > m_ColorVertsArrays;
+	CUtlVector< CUtlVector<colorTexel_t>* > m_ColorTexelsArrays;
+};
+
+//-----------------------------------------------------------------------------
+struct Rasterizer
+{
+	struct Location
+	{
+		Vector barycentric;
+		Vector2D uv;
+		bool   insideTriangle;
+	};
+
+	Rasterizer(Vector2D t0, Vector2D t1, Vector2D t2, size_t resX, size_t resY)
+	: mT0(t0)
+	, mT1(t1)
+	, mT2(t2)
+	, mResX(resX)
+	, mResY(resY)
+	, mUvStepX(1.0f / resX)
+	, mUvStepY(1.0f / resY)
+	{ 
+		Build();
+	}
+
+	CUtlVector< Location >::iterator begin() { return mRasterizedLocations.begin(); }
+	CUtlVector< Location >::iterator end() { return mRasterizedLocations.end(); }
+
+	void Build();
+
+	inline size_t GetRow(float y) const { return size_t(y * mResY); }
+	inline size_t GetCol(float x) const { return size_t(x * mResX); }
+
+	inline size_t GetLinearPos( const CUtlVector< Location >::iterator& it ) const
+	{
+		// Given an iterator, return what the linear position in the buffer would be for the data.
+		return (size_t)(GetRow(it->uv.y) * mResX)
+			 + (size_t)(GetCol(it->uv.x));
+	}
+	
+private:
+	const Vector2D mT0, mT1, mT2;
+	const size_t mResX, mResY;
+	const float mUvStepX, mUvStepY;
+
+	// Right now, we just fill this out and directly iterate over it. 
+	// It could be large. This is a memory/speed tradeoff. We could instead generate them
+	// on demand. 
+	CUtlVector< Location > mRasterizedLocations;
+};
+
+//-----------------------------------------------------------------------------
+inline Vector ComputeBarycentric( Vector2D _edgeC, Vector2D _edgeA, Vector2D _edgeB, float _dAA, float _dAB, float _dBB, float _invDenom )
+{
+	float dCA = _edgeC.Dot(_edgeA);
+	float dCB = _edgeC.Dot(_edgeB);
+	
+	Vector retVal;
+	retVal.y = (_dBB * dCA - _dAB * dCB) * _invDenom;
+	retVal.z = (_dAA * dCB - _dAB * dCA) * _invDenom;
+	retVal.x = 1.0f - retVal.y - retVal.z;
+
+	return retVal;
+}
+
+//-----------------------------------------------------------------------------
+void Rasterizer::Build()
+{
+	// For now, use the barycentric method. It's easy, I'm lazy. 
+	// We can optimize later if it's a performance issue.
+	const float baseX = mUvStepX / 2.0f;
+	const float baseY = mUvStepY / 2.0f;
+
+
+	float fMinX = min(min(mT0.x, mT1.x), mT2.x);
+	float fMinY = min(min(mT0.y, mT1.y), mT2.y);
+	float fMaxX = max(max(mT0.x, mT1.x), mT2.x);
+	float fMaxY = max(max(mT0.y, mT1.y), mT2.y);
+
+	// Degenerate. Consider warning about these, but otherwise no problem.
+	if (fMinX == fMaxX || fMinY == fMaxY)
+		return;
+
+	// Clamp to 0..1
+	fMinX = max(0, fMinX);
+	fMinY = max(0, fMinY);
+	fMaxX = min(1.0f, fMaxX);
+	fMaxY = min(1.0f, fMaxY);
+
+	// We puff the interesting area up by 1 so we can hit an inflated region for the necessary bilerp data.
+	// If we wanted to support better texturing (almost definitely unnecessary), we'd change this to a larger size.
+	const int kFilterSampleRadius = 1;
+
+	int iMinX = GetCol(fMinX) - kFilterSampleRadius;
+	int iMinY = GetRow(fMinY) - kFilterSampleRadius;
+	int iMaxX = GetCol(fMaxX) + 1 + kFilterSampleRadius;
+	int iMaxY = GetRow(fMaxY) + 1 + kFilterSampleRadius;
+
+	// Clamp to valid texture (integer) locations
+	iMinX = max(0, iMinX);
+	iMinY = max(0, iMinY);
+	iMaxX = min(iMaxX, mResX - 1);
+	iMaxY = min(iMaxY, mResY - 1);
+
+	// Set the size to be as expected. 
+	// TODO: Pass this in from outside to minimize allocations
+	int count = (iMaxY - iMinY + 1) 
+		      * (iMaxX - iMinX + 1);
+	mRasterizedLocations.EnsureCount(count);
+	memset( mRasterizedLocations.Base(), 0, mRasterizedLocations.Count() * sizeof( Location ) );
+	
+	// Computing Barycentrics adapted from here http://gamedev.stackexchange.com/questions/23743/whats-the-most-efficient-way-to-find-barycentric-coordinates
+	Vector2D edgeA = mT1 - mT0;
+	Vector2D edgeB = mT2 - mT0;
+
+	float dAA = edgeA.Dot(edgeA);
+	float dAB = edgeA.Dot(edgeB);
+	float dBB = edgeB.Dot(edgeB);
+	float invDenom = 1.0f / (dAA * dBB - dAB * dAB);
+
+	int linearPos = 0; 
+	for (int j = iMinY; j <= iMaxY; ++j) {
+		for (int i = iMinX; i <= iMaxX; ++i) {
+			Vector2D testPt( i * mUvStepX + baseX, j * mUvStepY + baseY );
+			Vector barycentric = ComputeBarycentric( testPt - mT0, edgeA, edgeB, dAA, dAB, dBB, invDenom );
+
+			// Test whether the point is inside the triangle. 
+			// MCJOHNTODO: Edge rules and whatnot--right now we re-rasterize points on the edge.
+			Location& newLoc = mRasterizedLocations[linearPos++];
+			newLoc.barycentric = barycentric;
+			newLoc.uv = testPt;
+
+			newLoc.insideTriangle = (barycentric.x >= 0.0f && barycentric.x <= 1.0f && barycentric.y >= 0.0f && barycentric.y <= 1.0f && barycentric.z >= 0.0f && barycentric.z <= 1.0f);
+		}
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Globals
+//-----------------------------------------------------------------------------
+CUtlSymbolTable g_ForcedTextureShadowsModels;
+
+// DON'T USE THIS FROM WITHIN A THREAD.  THERE IS A THREAD CONTEXT CREATED 
+// INSIDE PropTested_t.  USE THAT INSTEAD.
+IPhysicsCollision *s_pPhysCollision = NULL;
+
+static void ConvertTexelDataToTexture(unsigned int _resX, unsigned int _resY, ImageFormat _destFmt, const CUtlVector<colorTexel_t>& _srcTexels, CUtlMemory<byte>* _outTexture);
+
+// Such a monstrosity. :(
+static void GenerateLightmapSamplesForMesh( const matrix3x4_t& _matPos, const matrix3x4_t& _matNormal, int _iThread, int _skipProp, int _nFlags, int _lightmapResX, int _lightmapResY, 
+											studiohdr_t* _pStudioHdr, mstudiomodel_t* _pStudioModel, OptimizedModel::ModelHeader_t* _pVtxModel, int _meshID, 
+											CComputeStaticPropLightingResults *_pResults );
+
+// Debug function, converts lightmaps to linear space then dumps them out. 
+// TODO: Write out the file in a .dds instead of a .tga, in whatever format we're supposed to use.
+static void DumpLightmapLinear( const char* _dstFilename, const CUtlVector<colorTexel_t>& _srcTexels, int _width, int _height );
+
+
+//-----------------------------------------------------------------------------
+// Vrad's static prop manager
+//-----------------------------------------------------------------------------
+
+class CVradStaticPropMgr : public IVradStaticPropMgr
+{
+public:
+	// constructor, destructor
+	CVradStaticPropMgr();
+	virtual ~CVradStaticPropMgr();
+
+	// methods of IStaticPropMgr
+	void Init();
+	void Shutdown();
+
+	// iterate all the instanced static props and compute their vertex lighting
+	void ComputeLighting( int iThread );
+
+private:
+	// VMPI stuff.
+	static void VMPI_ProcessStaticProp_Static( int iThread, uint64 iStaticProp, MessageBuffer *pBuf );
+	static void VMPI_ReceiveStaticPropResults_Static( uint64 iStaticProp, MessageBuffer *pBuf, int iWorker );
+	void VMPI_ProcessStaticProp( int iThread, int iStaticProp, MessageBuffer *pBuf );
+	void VMPI_ReceiveStaticPropResults( int iStaticProp, MessageBuffer *pBuf, int iWorker );
+	
+	// local thread version
+	static void ThreadComputeStaticPropLighting( int iThread, void *pUserData );
+	void ComputeLightingForProp( int iThread, int iStaticProp );
+
+	// Methods associated with unserializing static props
+	void UnserializeModelDict( CUtlBuffer& buf );
+	void UnserializeModels( CUtlBuffer& buf );
+	void UnserializeStaticProps();
+
+	// Creates a collision model
+	void CreateCollisionModel( char const* pModelName );
+
+private:
+	// Unique static prop models
+	struct StaticPropDict_t
+	{
+		vcollide_t		m_loadedModel;
+		CPhysCollide*	m_pModel;
+		Vector			m_Mins;			// Bounding box is in local coordinates
+		Vector			m_Maxs;
+		studiohdr_t*	m_pStudioHdr;
+		CUtlBuffer		m_VtxBuf;
+		CUtlVector<int>	m_textureShadowIndex;	// each texture has an index if this model casts texture shadows
+		CUtlVector<int>	m_triangleMaterialIndex;// each triangle has an index if this model casts texture shadows
+	};
+
+	struct MeshData_t
+	{
+		CUtlVector<Vector>	m_VertexColors;
+		CUtlMemory<byte>	m_TexelsEncoded;
+		int					m_nLod;
+	};
+
+	// A static prop instance
+	struct CStaticProp
+	{
+		Vector					m_Origin;
+		QAngle					m_Angles;
+		Vector					m_mins;
+		Vector					m_maxs;
+		Vector					m_LightingOrigin;
+		int						m_ModelIdx;
+		BSPTreeDataHandle_t		m_Handle;
+		CUtlVector<MeshData_t>	m_MeshData;
+		int                     m_Flags;
+		bool					m_bLightingOriginValid;
+
+		// Note that all lightmaps for a given prop share the same resolution (and format)--and there can be multiple lightmaps
+		// per prop (if there are multiple pieces--the watercooler is an example).
+		// This is effectively because there's not a good way in hammer for a prop to say "this should be the resolution
+		// of each of my sub-pieces."
+		ImageFormat				m_LightmapImageFormat;
+		unsigned int			m_LightmapImageWidth;
+		unsigned int			m_LightmapImageHeight;
+
+	};
+
+	// Enumeration context
+	struct EnumContext_t
+	{
+		PropTested_t* m_pPropTested;
+		Ray_t const* m_pRay;
+	};
+
+	// The list of all static props
+	CUtlVector <StaticPropDict_t>	m_StaticPropDict;
+	CUtlVector <CStaticProp>		m_StaticProps;
+
+	bool m_bIgnoreStaticPropTrace;
+
+	void ComputeLighting( CStaticProp &prop, int iThread, int prop_index, CComputeStaticPropLightingResults *pResults );
+	void ApplyLightingToStaticProp( int iStaticProp, CStaticProp &prop, const CComputeStaticPropLightingResults *pResults );
+
+	void SerializeLighting();
+	void AddPolysForRayTrace();
+	void BuildTriList( CStaticProp &prop );
+};
+
+
+//-----------------------------------------------------------------------------
+// Expose IVradStaticPropMgr to vrad
+//-----------------------------------------------------------------------------
+
+static CVradStaticPropMgr	g_StaticPropMgr;
+IVradStaticPropMgr* StaticPropMgr()
+{
+	return &g_StaticPropMgr;
+}
+
+
+//-----------------------------------------------------------------------------
+// constructor, destructor
+//-----------------------------------------------------------------------------
+
+CVradStaticPropMgr::CVradStaticPropMgr()
+{
+	// set to ignore static prop traces
+	m_bIgnoreStaticPropTrace = false;
+}
+
+CVradStaticPropMgr::~CVradStaticPropMgr()
+{
+}
+
+//-----------------------------------------------------------------------------
+// Makes sure the studio model is a static prop
+//-----------------------------------------------------------------------------
+
+bool IsStaticProp( studiohdr_t* pHdr )
+{
+	if (!(pHdr->flags & STUDIOHDR_FLAGS_STATIC_PROP))
+		return false;
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Load a file into a Utlbuf
+//-----------------------------------------------------------------------------
+static bool LoadFile( char const* pFileName, CUtlBuffer& buf )
+{
+	if ( !g_pFullFileSystem )
+		return false;
+
+	return g_pFullFileSystem->ReadFile( pFileName, NULL, buf );
+}
+
+
+//-----------------------------------------------------------------------------
+// Constructs the file name from the model name
+//-----------------------------------------------------------------------------
+static char const* ConstructFileName( char const* pModelName )
+{
+	static char buf[1024];
+	sprintf( buf, "%s%s", gamedir, pModelName );
+	return buf;
+}
+
+
+//-----------------------------------------------------------------------------
+// Computes a convex hull from a studio mesh
+//-----------------------------------------------------------------------------
+static CPhysConvex* ComputeConvexHull( mstudiomesh_t* pMesh, studiohdr_t *pStudioHdr  )
+{
+	const mstudio_meshvertexdata_t *vertData = pMesh->GetVertexData( (void *)pStudioHdr );
+	Assert( vertData ); // This can only return NULL on X360 for now
+
+	// Generate a list of all verts in the mesh
+	Vector** ppVerts = (Vector**)_alloca(pMesh->numvertices * sizeof(Vector*) );
+	for (int i = 0; i < pMesh->numvertices; ++i)
+	{
+		ppVerts[i] = vertData->Position(i);
+	}
+
+	// Generate a convex hull from the verts
+	return s_pPhysCollision->ConvexFromVerts( ppVerts, pMesh->numvertices );
+}
+
+
+//-----------------------------------------------------------------------------
+// Computes a convex hull from the studio model
+//-----------------------------------------------------------------------------
+CPhysCollide* ComputeConvexHull( studiohdr_t* pStudioHdr )
+{
+	CUtlVector<CPhysConvex*>	convexHulls;
+
+	for (int body = 0; body < pStudioHdr->numbodyparts; ++body )
+	{
+		mstudiobodyparts_t *pBodyPart = pStudioHdr->pBodypart( body );
+		for( int model = 0; model < pBodyPart->nummodels; ++model )
+		{
+			mstudiomodel_t *pStudioModel = pBodyPart->pModel( model );
+			for( int mesh = 0; mesh < pStudioModel->nummeshes; ++mesh )
+			{
+				// Make a convex hull for each mesh
+				// NOTE: This won't work unless the model has been compiled
+				// with $staticprop
+				mstudiomesh_t *pStudioMesh = pStudioModel->pMesh( mesh );
+				convexHulls.AddToTail( ComputeConvexHull( pStudioMesh, pStudioHdr ) );
+			}
+		}
+	}
+
+	// Convert an array of convex elements to a compiled collision model
+	// (this deletes the convex elements)
+	return s_pPhysCollision->ConvertConvexToCollide( convexHulls.Base(), convexHulls.Size() );
+}
+
+
+//-----------------------------------------------------------------------------
+// Load studio model vertex data from a file...
+//-----------------------------------------------------------------------------
+
+bool LoadStudioModel( char const* pModelName, CUtlBuffer& buf )
+{
+	// No luck, gotta build it	
+	// Construct the file name...
+	if (!LoadFile( pModelName, buf ))
+	{
+		Warning("Error! Unable to load model \"%s\"\n", pModelName );
+		return false;
+	}
+
+	// Check that it's valid
+	if (strncmp ((const char *) buf.PeekGet(), "IDST", 4) &&
+		strncmp ((const char *) buf.PeekGet(), "IDAG", 4))
+	{
+		Warning("Error! Invalid model file \"%s\"\n", pModelName );
+		return false;
+	}
+
+	studiohdr_t* pHdr = (studiohdr_t*)buf.PeekGet();
+
+	Studio_ConvertStudioHdrToNewVersion( pHdr );
+
+	if (pHdr->version != STUDIO_VERSION)
+	{
+		Warning("Error! Invalid model version \"%s\"\n", pModelName );
+		return false;
+	}
+
+	if (!IsStaticProp(pHdr))
+	{
+		Warning("Error! To use model \"%s\"\n"
+			"      as a static prop, it must be compiled with $staticprop!\n", pModelName );
+		return false;
+	}
+
+	// ensure reset
+	pHdr->pVertexBase = NULL;
+	pHdr->pIndexBase  = NULL;
+
+	return true;
+}
+
+bool LoadStudioCollisionModel( char const* pModelName, CUtlBuffer& buf )
+{
+	char tmp[1024];
+	Q_strncpy( tmp, pModelName, sizeof( tmp ) );
+	Q_SetExtension( tmp, ".phy", sizeof( tmp ) );
+	// No luck, gotta build it	
+	if (!LoadFile( tmp, buf ))
+	{
+		// this is not an error, the model simply has no PHY file
+		return false;
+	}
+
+	phyheader_t *header = (phyheader_t *)buf.PeekGet();
+
+	if ( header->size != sizeof(*header) || header->solidCount <= 0 )
+		return false;
+
+	return true;
+}
+
+bool LoadVTXFile( char const* pModelName, const studiohdr_t *pStudioHdr, CUtlBuffer& buf )
+{
+	char	filename[MAX_PATH];
+
+	// construct filename
+	Q_StripExtension( pModelName, filename, sizeof( filename ) );
+	strcat( filename, ".dx80.vtx" );
+
+	if ( !LoadFile( filename, buf ) )
+	{
+		Warning( "Error! Unable to load file \"%s\"\n", filename );
+		return false;
+	}
+
+	OptimizedModel::FileHeader_t* pVtxHdr = (OptimizedModel::FileHeader_t *)buf.Base();
+
+	// Check that it's valid
+	if ( pVtxHdr->version != OPTIMIZED_MODEL_FILE_VERSION )
+	{
+		Warning( "Error! Invalid VTX file version: %d, expected %d \"%s\"\n", pVtxHdr->version, OPTIMIZED_MODEL_FILE_VERSION, filename );
+		return false;
+	}
+	if ( pVtxHdr->checkSum != pStudioHdr->checksum )
+	{
+		Warning( "Error! Invalid VTX file checksum: %d, expected %d \"%s\"\n", pVtxHdr->checkSum, pStudioHdr->checksum, filename );
+		return false;
+	}
+
+	return true;
+}
+
+//-----------------------------------------------------------------------------
+// Gets a vertex position from a strip index
+//-----------------------------------------------------------------------------
+inline static Vector* PositionFromIndex( const mstudio_meshvertexdata_t *vertData, mstudiomesh_t* pMesh, OptimizedModel::StripGroupHeader_t* pStripGroup, int i )
+{
+	OptimizedModel::Vertex_t* pVert = pStripGroup->pVertex( i );
+	return vertData->Position( pVert->origMeshVertID );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Writes a glview text file containing the collision surface in question
+// Input  : *pCollide - 
+//			*pFilename - 
+//-----------------------------------------------------------------------------
+void DumpCollideToGlView( vcollide_t *pCollide, const char *pFilename )
+{
+	if ( !pCollide )
+		return;
+
+	Msg("Writing %s...\n", pFilename );
+
+	FILE *fp = fopen( pFilename, "w" );
+	for (int i = 0; i < pCollide->solidCount; ++i)
+	{
+		Vector *outVerts;
+		int vertCount = s_pPhysCollision->CreateDebugMesh( pCollide->solids[i], &outVerts );
+		int triCount = vertCount / 3;
+		int vert = 0;
+
+		unsigned char r = (i & 1) * 64 + 64;
+		unsigned char g = (i & 2) * 64 + 64;
+		unsigned char b = (i & 4) * 64 + 64;
+
+		float fr = r / 255.0f;
+		float fg = g / 255.0f;
+		float fb = b / 255.0f;
+
+		for ( int i = 0; i < triCount; i++ )
+		{
+			fprintf( fp, "3\n" );
+			fprintf( fp, "%6.3f %6.3f %6.3f %.2f %.3f %.3f\n", 
+				outVerts[vert].x, outVerts[vert].y, outVerts[vert].z, fr, fg, fb );
+			vert++;
+			fprintf( fp, "%6.3f %6.3f %6.3f %.2f %.3f %.3f\n", 
+				outVerts[vert].x, outVerts[vert].y, outVerts[vert].z, fr, fg, fb );
+			vert++;
+			fprintf( fp, "%6.3f %6.3f %6.3f %.2f %.3f %.3f\n", 
+				outVerts[vert].x, outVerts[vert].y, outVerts[vert].z, fr, fg, fb );
+			vert++;
+		}
+		s_pPhysCollision->DestroyDebugMesh( vertCount, outVerts );
+	}
+	fclose( fp );
+}
+
+
+static bool PointInTriangle( const Vector2D &p, const Vector2D &v0, const Vector2D &v1, const Vector2D &v2 )
+{
+	float coords[3];
+	GetBarycentricCoords2D( v0, v1, v2, p, coords );
+	for ( int i = 0; i < 3; i++ )
+	{
+		if ( coords[i] < 0.0f || coords[i] > 1.0f )
+			return false;
+	}
+	float sum = coords[0] + coords[1] + coords[2];
+	if ( sum > 1.0f )
+		return false;
+	return true;
+}
+
+bool LoadFileIntoBuffer( CUtlBuffer &buf, const char *pFilename )
+{
+	FileHandle_t fileHandle = g_pFileSystem->Open( pFilename, "rb" );
+	if ( !fileHandle )
+		return false;
+
+	// Get the file size
+	int texSize = g_pFileSystem->Size( fileHandle );
+	buf.EnsureCapacity( texSize );
+	int nBytesRead = g_pFileSystem->Read( buf.Base(), texSize, fileHandle );
+	g_pFileSystem->Close( fileHandle );
+	buf.SeekPut( CUtlBuffer::SEEK_HEAD, nBytesRead );
+	buf.SeekGet( CUtlBuffer::SEEK_HEAD, 0 );
+	return true;
+}
+
+// keeps a list of all textures that cast shadows via alpha channel
+class CShadowTextureList
+{
+public:
+	// This loads a vtf and converts it to RGB8888 format
+	unsigned char *LoadVTFRGB8888( const char *pName, int *pWidth, int *pHeight, bool *pClampU, bool *pClampV )
+	{
+		char szPath[MAX_PATH];
+		Q_strncpy( szPath, "materials/", sizeof( szPath ) );
+		Q_strncat( szPath, pName, sizeof( szPath ), COPY_ALL_CHARACTERS );
+		Q_strncat( szPath, ".vtf", sizeof( szPath ), COPY_ALL_CHARACTERS );
+		Q_FixSlashes( szPath, CORRECT_PATH_SEPARATOR );
+
+		CUtlBuffer buf;
+		if ( !LoadFileIntoBuffer( buf, szPath ) )
+			return NULL;
+		IVTFTexture *pTex = CreateVTFTexture();
+		if (!pTex->Unserialize( buf ))
+			return NULL;
+		Msg("Loaded alpha texture %s\n", szPath );
+		unsigned char *pSrcImage = pTex->ImageData( 0, 0, 0, 0, 0, 0 );
+		int iWidth = pTex->Width();
+		int iHeight = pTex->Height();
+		ImageFormat dstFormat = IMAGE_FORMAT_RGBA8888;
+		ImageFormat srcFormat = pTex->Format();
+		*pClampU = (pTex->Flags() & TEXTUREFLAGS_CLAMPS) ? true : false;
+		*pClampV = (pTex->Flags() & TEXTUREFLAGS_CLAMPT) ? true : false;
+		unsigned char *pDstImage = new unsigned char[ImageLoader::GetMemRequired( iWidth, iHeight, 1, dstFormat, false )];
+
+		if( !ImageLoader::ConvertImageFormat( pSrcImage, srcFormat, 
+			pDstImage, dstFormat, iWidth, iHeight, 0, 0 ) )
+		{
+			delete[] pDstImage;
+			return NULL;
+		}
+
+		*pWidth = iWidth;
+		*pHeight = iHeight;
+		return pDstImage;
+	}
+
+	// Checks the database for the material and loads if necessary
+	// returns true if found and pIndex will be the index, -1 if no alpha shadows
+	bool FindOrLoadIfValid( const char *pMaterialName, int *pIndex )
+	{
+		*pIndex = -1;
+		int index = m_Textures.Find(pMaterialName);
+		bool bFound = false;
+		if ( index != m_Textures.InvalidIndex() )
+		{
+			bFound = true;
+			*pIndex = index;
+		}
+		else
+		{
+			KeyValues *pVMT = new KeyValues("vmt");
+			CUtlBuffer buf(0,0,CUtlBuffer::TEXT_BUFFER);
+			LoadFileIntoBuffer( buf, pMaterialName );
+			if ( pVMT->LoadFromBuffer( pMaterialName, buf ) )
+			{
+				bFound = true;
+				if ( pVMT->FindKey("$translucent") || pVMT->FindKey("$alphatest") )
+				{
+					KeyValues *pBaseTexture = pVMT->FindKey("$basetexture");
+					if ( pBaseTexture )
+					{
+						const char *pBaseTextureName = pBaseTexture->GetString();
+						if ( pBaseTextureName )
+						{
+							int w, h;
+							bool bClampU = false;
+							bool bClampV = false;
+							unsigned char *pImageBits = LoadVTFRGB8888( pBaseTextureName, &w, &h, &bClampU, &bClampV );
+							if ( pImageBits )
+							{
+								int index = m_Textures.Insert( pMaterialName );
+								m_Textures[index].InitFromRGB8888( w, h, pImageBits );
+								*pIndex = index;
+								if ( pVMT->FindKey("$nocull") )
+								{
+									// UNDONE: Support this? Do we need to emit two triangles?
+									m_Textures[index].allowBackface = true;
+								}
+								m_Textures[index].clampU = bClampU;
+								m_Textures[index].clampV = bClampV;
+								delete[] pImageBits;
+							}
+						}
+					}
+				}
+
+			}
+			pVMT->deleteThis();
+		}
+
+		return bFound;
+	}
+
+
+	// iterate the textures for the model and load each one into the database
+	// this is used on models marked to cast texture shadows
+	void LoadAllTexturesForModel( studiohdr_t *pHdr, int *pTextureList )
+	{
+		for ( int i = 0; i < pHdr->numtextures; i++ )
+		{
+			int textureIndex = -1;
+			// try to add each texture to the transparent shadow manager
+			char szPath[MAX_PATH];
+
+			// iterate quietly through all specified directories until a valid material is found
+			for ( int j = 0; j < pHdr->numcdtextures; j++ )
+			{
+				Q_strncpy( szPath, "materials/", sizeof( szPath ) );
+				Q_strncat( szPath, pHdr->pCdtexture( j ), sizeof( szPath ) );
+				const char *textureName = pHdr->pTexture( i )->pszName();
+				Q_strncat( szPath, textureName, sizeof( szPath ), COPY_ALL_CHARACTERS );
+				Q_strncat( szPath, ".vmt", sizeof( szPath ), COPY_ALL_CHARACTERS );
+				Q_FixSlashes( szPath, CORRECT_PATH_SEPARATOR );
+				if ( FindOrLoadIfValid( szPath, &textureIndex ) )
+					break;
+			}
+
+			pTextureList[i] = textureIndex;
+		}
+	}
+	
+	int AddMaterialEntry( int shadowTextureIndex, const Vector2D &t0, const Vector2D &t1, const Vector2D &t2 )
+	{
+		int index = m_MaterialEntries.AddToTail();
+		m_MaterialEntries[index].textureIndex = shadowTextureIndex;
+		m_MaterialEntries[index].uv[0] = t0;
+		m_MaterialEntries[index].uv[1] = t1;
+		m_MaterialEntries[index].uv[2] = t2;
+		return index;
+	}
+
+	// HACKHACK: Compute the average coverage for this triangle by sampling the AABB of its texture space
+	float ComputeCoverageForTriangle( int shadowTextureIndex, const Vector2D &t0, const Vector2D &t1, const Vector2D &t2 )
+	{
+		float umin = min(t0.x, t1.x);
+		umin = min(umin, t2.x);
+		float umax = max(t0.x, t1.x);
+		umax = max(umax, t2.x);
+
+		float vmin = min(t0.y, t1.y);
+		vmin = min(vmin, t2.y);
+		float vmax = max(t0.y, t1.y);
+		vmax = max(vmax, t2.y);
+
+		// UNDONE: Do something about tiling
+		umin = clamp(umin, 0, 1);
+		umax = clamp(umax, 0, 1);
+		vmin = clamp(vmin, 0, 1);
+		vmax = clamp(vmax, 0, 1);
+		Assert(umin>=0.0f && umax <= 1.0f);
+		Assert(vmin>=0.0f && vmax <= 1.0f);
+		const alphatexture_t &tex = m_Textures.Element(shadowTextureIndex);
+		int u0 = umin * (tex.width-1);
+		int u1 = umax * (tex.width-1);
+		int v0 = vmin * (tex.height-1);
+		int v1 = vmax * (tex.height-1);
+
+		int total = 0;
+		int count = 0;
+		for ( int v = v0; v <= v1; v++ )
+		{
+			int row = (v * tex.width);
+			for ( int u = u0; u <= u1; u++ )
+			{
+				total += tex.pAlphaTexels[row + u];
+				count++;
+			}
+		}
+		if ( count )
+		{
+			float coverage = float(total) / (count * 255.0f);
+			return coverage;
+		}
+		return 1.0f;
+	}
+	
+	int SampleMaterial( int materialIndex, const Vector &coords, bool bBackface )
+	{
+		const materialentry_t &mat = m_MaterialEntries[materialIndex];
+		const alphatexture_t &tex = m_Textures.Element(m_MaterialEntries[materialIndex].textureIndex);
+		if ( bBackface && !tex.allowBackface )
+			return 0;
+		Vector2D uv = coords.x * mat.uv[0] + coords.y * mat.uv[1] + coords.z * mat.uv[2];
+		int u = RoundFloatToInt( uv[0] * tex.width );
+		int v = RoundFloatToInt( uv[1] * tex.height );
+		
+		// asume power of 2, clamp or wrap
+		// UNDONE: Support clamp?  This code should work
+#if 0
+		u = tex.clampU ? clamp(u,0,(tex.width-1)) : (u & (tex.width-1));
+		v = tex.clampV ? clamp(v,0,(tex.height-1)) : (v & (tex.height-1));
+#else
+		// for now always wrap
+		u &= (tex.width-1);
+		v &= (tex.height-1);
+#endif
+
+		return tex.pAlphaTexels[v * tex.width + u];
+	}
+
+	struct alphatexture_t 
+	{
+		short width;
+		short height;
+		bool allowBackface;
+		bool clampU;
+		bool clampV;
+		unsigned char *pAlphaTexels;
+
+		void InitFromRGB8888( int w, int h, unsigned char *pTexels )
+		{
+			width = w;
+			height = h;
+			pAlphaTexels = new unsigned char[w*h];
+			for ( int i = 0; i < h; i++ )
+			{
+				for ( int j = 0; j < w; j++ )
+				{
+					int index = (i*w) + j;
+					pAlphaTexels[index] = pTexels[index*4 + 3];
+				}
+			}
+		}
+	};
+	struct materialentry_t
+	{
+		int textureIndex;
+		Vector2D uv[3];
+	};
+	// this is the list of textures we've loaded
+	// only load each one once
+	CUtlDict< alphatexture_t, unsigned short > m_Textures;
+	CUtlVector<materialentry_t> m_MaterialEntries;
+};
+
+// global to keep the shadow-casting texture list and their alpha bits
+CShadowTextureList g_ShadowTextureList;
+
+float ComputeCoverageFromTexture( float b0, float b1, float b2, int32 hitID )
+{
+	const float alphaScale = 1.0f / 255.0f;
+	// UNDONE: Pass ray down to determine backfacing?
+	//Vector normal( tri.m_flNx, tri.m_flNy, tri.m_flNz );
+	//bool bBackface = DotProduct(delta, tri.N) > 0 ? true : false;
+	Vector coords(b0,b1,b2);
+	return alphaScale * g_ShadowTextureList.SampleMaterial( g_RtEnv.GetTriangleMaterial(hitID), coords, false );
+}
+
+// this is here to strip models/ or .mdl or whatnot
+void CleanModelName( const char *pModelName, char *pOutput, int outLen )
+{
+	// strip off leading models/ if it exists
+	const char *pModelDir = "models/";
+	int modelLen = Q_strlen(pModelDir);
+
+	if ( !Q_strnicmp(pModelName, pModelDir, modelLen ) )
+	{
+		pModelName += modelLen;
+	}
+	Q_strncpy( pOutput, pModelName, outLen );
+
+	// truncate any .mdl extension
+	char *dot = strchr(pOutput,'.');
+	if ( dot )
+	{
+		*dot = 0;
+	}
+
+}
+
+
+void ForceTextureShadowsOnModel( const char *pModelName )
+{
+	char buf[1024];
+	CleanModelName( pModelName, buf, sizeof(buf) );
+	if ( !g_ForcedTextureShadowsModels.Find(buf).IsValid())
+	{
+		g_ForcedTextureShadowsModels.AddString(buf);
+	}
+}
+
+bool IsModelTextureShadowsForced( const char *pModelName )
+{
+	char buf[1024];
+	CleanModelName( pModelName, buf, sizeof(buf) );
+	return g_ForcedTextureShadowsModels.Find(buf).IsValid();
+}
+
+
+//-----------------------------------------------------------------------------
+// Creates a collision model (based on the render geometry!)
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::CreateCollisionModel( char const* pModelName )
+{
+	CUtlBuffer buf;
+	CUtlBuffer bufvtx;
+	CUtlBuffer bufphy;
+
+	int i = m_StaticPropDict.AddToTail();
+	m_StaticPropDict[i].m_pModel = NULL;
+	m_StaticPropDict[i].m_pStudioHdr = NULL;
+
+	if ( !LoadStudioModel( pModelName, buf ) )
+	{
+		VectorCopy( vec3_origin, m_StaticPropDict[i].m_Mins );
+		VectorCopy( vec3_origin, m_StaticPropDict[i].m_Maxs );
+		return;
+	}
+
+	studiohdr_t* pHdr = (studiohdr_t*)buf.Base();
+
+	VectorCopy( pHdr->hull_min, m_StaticPropDict[i].m_Mins );
+	VectorCopy( pHdr->hull_max, m_StaticPropDict[i].m_Maxs );
+
+	if ( LoadStudioCollisionModel( pModelName, bufphy ) )
+	{
+		phyheader_t header;
+		bufphy.Get( &header, sizeof(header) );
+
+		vcollide_t *pCollide = &m_StaticPropDict[i].m_loadedModel;
+		s_pPhysCollision->VCollideLoad( pCollide, header.solidCount, (const char *)bufphy.PeekGet(), bufphy.TellPut() - bufphy.TellGet() );
+		m_StaticPropDict[i].m_pModel = m_StaticPropDict[i].m_loadedModel.solids[0];
+
+		/*
+		static int propNum = 0;
+		char tmp[128];
+		sprintf( tmp, "staticprop%03d.txt", propNum );
+		DumpCollideToGlView( pCollide, tmp );
+		++propNum;
+		*/
+	}
+	else
+	{
+		// mark this as unused
+		m_StaticPropDict[i].m_loadedModel.solidCount = 0;
+
+		// CPhysCollide* pPhys = CreatePhysCollide( pHdr, pVtxHdr );
+		m_StaticPropDict[i].m_pModel = ComputeConvexHull( pHdr );
+	}
+
+	// clone it
+	m_StaticPropDict[i].m_pStudioHdr = (studiohdr_t *)malloc( buf.Size() );
+	memcpy( m_StaticPropDict[i].m_pStudioHdr, (studiohdr_t*)buf.Base(), buf.Size() );
+
+	if ( !LoadVTXFile( pModelName, m_StaticPropDict[i].m_pStudioHdr, m_StaticPropDict[i].m_VtxBuf ) )
+	{
+		// failed, leave state identified as disabled
+		m_StaticPropDict[i].m_VtxBuf.Purge();
+	}
+
+	if ( g_bTextureShadows )
+	{
+		if ( (pHdr->flags & STUDIOHDR_FLAGS_CAST_TEXTURE_SHADOWS) || IsModelTextureShadowsForced(pModelName) )
+		{
+			m_StaticPropDict[i].m_textureShadowIndex.RemoveAll();
+			m_StaticPropDict[i].m_triangleMaterialIndex.RemoveAll();
+			m_StaticPropDict[i].m_textureShadowIndex.AddMultipleToTail( pHdr->numtextures );
+			g_ShadowTextureList.LoadAllTexturesForModel( pHdr, m_StaticPropDict[i].m_textureShadowIndex.Base() );
+		}
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Unserialize static prop model dictionary
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::UnserializeModelDict( CUtlBuffer& buf )
+{
+	int count = buf.GetInt();
+	while ( --count >= 0 )
+	{
+		StaticPropDictLump_t lump;
+		buf.Get( &lump, sizeof(StaticPropDictLump_t) );
+		
+		CreateCollisionModel( lump.m_Name );
+	}
+}
+
+void CVradStaticPropMgr::UnserializeModels( CUtlBuffer& buf )
+{
+	int count = buf.GetInt();
+
+
+	m_StaticProps.AddMultipleToTail(count);
+	for ( int i = 0; i < count; ++i )				  
+	{
+		StaticPropLump_t lump;
+		buf.Get( &lump, sizeof(StaticPropLump_t) );
+		
+		VectorCopy( lump.m_Origin, m_StaticProps[i].m_Origin );
+		VectorCopy( lump.m_Angles, m_StaticProps[i].m_Angles );
+		VectorCopy( lump.m_LightingOrigin, m_StaticProps[i].m_LightingOrigin );
+		m_StaticProps[i].m_bLightingOriginValid = ( lump.m_Flags & STATIC_PROP_USE_LIGHTING_ORIGIN ) > 0;
+		m_StaticProps[i].m_ModelIdx = lump.m_PropType;
+		m_StaticProps[i].m_Handle = TREEDATA_INVALID_HANDLE;
+		m_StaticProps[i].m_Flags = lump.m_Flags;
+
+		// Changed this from using DXT1 to RGB888 because the compression artifacts were pretty nasty. 
+		// TODO: Consider changing back or basing this on user selection in hammer.
+		m_StaticProps[i].m_LightmapImageFormat = IMAGE_FORMAT_RGB888;
+		m_StaticProps[i].m_LightmapImageWidth = lump.m_nLightmapResolutionX;
+		m_StaticProps[i].m_LightmapImageHeight = lump.m_nLightmapResolutionY;
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Unserialize static props
+//-----------------------------------------------------------------------------
+
+void CVradStaticPropMgr::UnserializeStaticProps()
+{
+	// Unserialize static props, insert them into the appropriate leaves
+	GameLumpHandle_t handle = g_GameLumps.GetGameLumpHandle( GAMELUMP_STATIC_PROPS );
+	int size = g_GameLumps.GameLumpSize( handle );
+	if (!size)
+		return;
+
+	if ( g_GameLumps.GetGameLumpVersion( handle ) != GAMELUMP_STATIC_PROPS_VERSION )
+	{
+		Error( "Cannot load the static props... encountered a stale map version. Re-vbsp the map." );
+	}
+
+	if ( g_GameLumps.GetGameLump( handle ) )
+	{
+		CUtlBuffer buf( g_GameLumps.GetGameLump(handle), size, CUtlBuffer::READ_ONLY );
+		UnserializeModelDict( buf );
+
+		// Skip the leaf list data
+		int count = buf.GetInt();
+		buf.SeekGet( CUtlBuffer::SEEK_CURRENT, count * sizeof(StaticPropLeafLump_t) );
+
+		UnserializeModels( buf );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Level init, shutdown
+//-----------------------------------------------------------------------------
+
+void CVradStaticPropMgr::Init()
+{
+	CreateInterfaceFn physicsFactory = GetPhysicsFactory();
+	if ( !physicsFactory )
+		Error( "Unable to load vphysics DLL." );
+		
+	s_pPhysCollision = (IPhysicsCollision *)physicsFactory( VPHYSICS_COLLISION_INTERFACE_VERSION, NULL );
+	if( !s_pPhysCollision )
+	{
+		Error( "Unable to get '%s' for physics interface.", VPHYSICS_COLLISION_INTERFACE_VERSION );
+		return;
+	}
+
+	// Read in static props that have been compiled into the bsp file
+	UnserializeStaticProps();
+}
+
+void CVradStaticPropMgr::Shutdown()
+{
+
+	// Remove all static prop model data
+	for (int i = m_StaticPropDict.Size(); --i >= 0; )
+	{
+		studiohdr_t *pStudioHdr = m_StaticPropDict[i].m_pStudioHdr;
+		if ( pStudioHdr )
+		{
+			if ( pStudioHdr->pVertexBase )
+			{
+				free( pStudioHdr->pVertexBase );
+			}
+			free( pStudioHdr );
+		}
+	}
+
+	m_StaticProps.Purge();
+	m_StaticPropDict.Purge();
+}
+
+void ComputeLightmapColor( dface_t* pFace, Vector &color )
+{
+	texinfo_t* pTex = &texinfo[pFace->texinfo];
+	if ( pTex->flags & SURF_SKY )
+	{
+		// sky ambient already accounted for in direct component
+		return;
+	}
+}
+
+bool PositionInSolid( Vector &position )
+{
+	int ndxLeaf = PointLeafnum( position );
+	if ( dleafs[ndxLeaf].contents & CONTENTS_SOLID )
+	{
+		// position embedded in solid
+		return true;
+	}
+
+	return false;
+}
+
+//-----------------------------------------------------------------------------
+// Trace from a vertex to each direct light source, accumulating its contribution.
+//-----------------------------------------------------------------------------
+void ComputeDirectLightingAtPoint( Vector &position, Vector &normal, Vector &outColor, int iThread,
+								   int static_prop_id_to_skip=-1, int nLFlags = 0)
+{
+	SSE_sampleLightOutput_t	sampleOutput;
+
+	outColor.Init();
+
+	// Iterate over all direct lights and accumulate their contribution
+	int cluster = ClusterFromPoint( position );
+	for ( directlight_t *dl = activelights; dl != NULL; dl = dl->next )
+	{
+		if ( dl->light.style )
+		{
+			// skip lights with style
+			continue;
+		}
+
+		// is this lights cluster visible?
+		if ( !PVSCheck( dl->pvs, cluster ) )
+			continue;
+
+		// push the vertex towards the light to avoid surface acne
+		Vector adjusted_pos = position;
+		float flEpsilon = 0.0;
+
+		if  (dl->light.type != emit_skyambient)
+		{
+			// push towards the light
+			Vector fudge;
+			if ( dl->light.type == emit_skylight )
+				fudge = -( dl->light.normal);
+			else
+			{
+				fudge = dl->light.origin-position;
+				VectorNormalize( fudge );
+			}
+			fudge *= 4.0;
+			adjusted_pos += fudge;
+		}
+		else 
+		{
+			// push out along normal
+			adjusted_pos += 4.0 * normal;
+//			flEpsilon = 1.0;
+		}
+
+		FourVectors adjusted_pos4;
+		FourVectors normal4;
+		adjusted_pos4.DuplicateVector( adjusted_pos );
+		normal4.DuplicateVector( normal );
+
+		GatherSampleLightSSE( sampleOutput, dl, -1, adjusted_pos4, &normal4, 1, iThread, nLFlags | GATHERLFLAGS_FORCE_FAST,
+		                      static_prop_id_to_skip, flEpsilon );
+		
+		VectorMA( outColor, sampleOutput.m_flFalloff.m128_f32[0] * sampleOutput.m_flDot[0].m128_f32[0], dl->light.intensity, outColor );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Takes the results from a ComputeLighting call and applies it to the static prop in question.
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::ApplyLightingToStaticProp( int iStaticProp, CStaticProp &prop, const CComputeStaticPropLightingResults *pResults )
+{
+	if ( pResults->m_ColorVertsArrays.Count() == 0 && pResults->m_ColorTexelsArrays.Count() == 0 )
+		return;
+
+	StaticPropDict_t &dict = m_StaticPropDict[prop.m_ModelIdx];
+	studiohdr_t	*pStudioHdr = dict.m_pStudioHdr;
+	OptimizedModel::FileHeader_t *pVtxHdr = (OptimizedModel::FileHeader_t *)dict.m_VtxBuf.Base();
+	Assert( pStudioHdr && pVtxHdr );
+
+	int iCurColorVertsArray = 0;
+	int iCurColorTexelsArray = 0;
+
+	for ( int bodyID = 0; bodyID < pStudioHdr->numbodyparts; ++bodyID )
+	{
+		OptimizedModel::BodyPartHeader_t* pVtxBodyPart = pVtxHdr->pBodyPart( bodyID );
+		mstudiobodyparts_t *pBodyPart = pStudioHdr->pBodypart( bodyID );
+
+		for ( int modelID = 0; modelID < pBodyPart->nummodels; ++modelID )
+		{
+			OptimizedModel::ModelHeader_t* pVtxModel = pVtxBodyPart->pModel( modelID );
+			mstudiomodel_t *pStudioModel = pBodyPart->pModel( modelID );
+						
+			const CUtlVector<colorVertex_t> *colorVerts = pResults->m_ColorVertsArrays.Count() ? pResults->m_ColorVertsArrays[iCurColorVertsArray++] : nullptr;
+			const CUtlVector<colorTexel_t> *colorTexels = pResults->m_ColorTexelsArrays.Count() ? pResults->m_ColorTexelsArrays[iCurColorTexelsArray++] : nullptr;
+			
+			for ( int nLod = 0; nLod < pVtxHdr->numLODs; nLod++ )
+			{
+				OptimizedModel::ModelLODHeader_t *pVtxLOD = pVtxModel->pLOD( nLod );
+
+				for ( int nMesh = 0; nMesh < pStudioModel->nummeshes; ++nMesh )
+				{
+					mstudiomesh_t* pMesh = pStudioModel->pMesh( nMesh );
+					OptimizedModel::MeshHeader_t* pVtxMesh = pVtxLOD->pMesh( nMesh );
+
+					for ( int nGroup = 0; nGroup < pVtxMesh->numStripGroups; ++nGroup )
+					{
+						OptimizedModel::StripGroupHeader_t* pStripGroup = pVtxMesh->pStripGroup( nGroup );
+						int nMeshIdx = prop.m_MeshData.AddToTail();
+
+						if (colorVerts)
+						{
+							prop.m_MeshData[nMeshIdx].m_VertexColors.AddMultipleToTail( pStripGroup->numVerts );
+							prop.m_MeshData[nMeshIdx].m_nLod = nLod;
+
+							for ( int nVertex = 0; nVertex < pStripGroup->numVerts; ++nVertex )
+							{
+								int nIndex = pMesh->vertexoffset + pStripGroup->pVertex( nVertex )->origMeshVertID;
+
+								Assert( nIndex < pStudioModel->numvertices );
+								prop.m_MeshData[nMeshIdx].m_VertexColors[nVertex] = (*colorVerts)[nIndex].m_Color;
+							}
+						}
+
+						if (colorTexels)
+						{
+							// TODO: Consider doing this work in the worker threads, because then we distribute it.
+							ConvertTexelDataToTexture(prop.m_LightmapImageWidth, prop.m_LightmapImageHeight, prop.m_LightmapImageFormat, (*colorTexels), &prop.m_MeshData[nMeshIdx].m_TexelsEncoded);
+
+							if (g_bDumpPropLightmaps)
+							{
+								char buffer[_MAX_PATH];
+								V_snprintf( 
+									buffer, 
+									_MAX_PATH - 1, 
+									"staticprop_lightmap_%d_%.0f_%.0f_%.0f_%s_%d_%d_%d_%d_%d.tga", 
+									iStaticProp, 
+									prop.m_Origin.x, 
+									prop.m_Origin.y,
+									prop.m_Origin.z,
+									dict.m_pStudioHdr->pszName(), 
+									bodyID, 
+									modelID, 
+									nLod, 
+									nMesh, 
+									nGroup 
+								);
+
+								for ( int i = 0; buffer[i]; ++i ) 
+								{
+									if (buffer[i] == '/' || buffer[i] == '\\')
+										buffer[i] = '-';
+								}
+								DumpLightmapLinear( buffer, (*colorTexels), prop.m_LightmapImageWidth, prop.m_LightmapImageHeight );
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Trace rays from each unique vertex, accumulating direct and indirect
+// sources at each ray termination. Use the winding data to distribute the unique vertexes
+// into the rendering layout.
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::ComputeLighting( CStaticProp &prop, int iThread, int prop_index, CComputeStaticPropLightingResults *pResults )
+{
+	CUtlVector<badVertex_t>		badVerts;
+
+	StaticPropDict_t &dict = m_StaticPropDict[prop.m_ModelIdx];
+	studiohdr_t	*pStudioHdr = dict.m_pStudioHdr;
+	OptimizedModel::FileHeader_t *pVtxHdr = (OptimizedModel::FileHeader_t *)dict.m_VtxBuf.Base();
+	if ( !pStudioHdr || !pVtxHdr )
+	{
+		// must have model and its verts for lighting computation
+		// game will fallback to fullbright
+		return;
+	}
+
+	const bool withVertexLighting = (prop.m_Flags & STATIC_PROP_NO_PER_VERTEX_LIGHTING) == 0;
+	const bool withTexelLighting = (prop.m_Flags & STATIC_PROP_NO_PER_TEXEL_LIGHTING) == 0;
+
+	if (!withVertexLighting && !withTexelLighting)
+		return;
+
+	const int skip_prop = (g_bDisablePropSelfShadowing || (prop.m_Flags & STATIC_PROP_NO_SELF_SHADOWING)) ? prop_index : -1;
+	const int nFlags = ( prop.m_Flags & STATIC_PROP_IGNORE_NORMALS ) ? GATHERLFLAGS_IGNORE_NORMALS : 0;
+
+	VMPI_SetCurrentStage( "ComputeLighting" );
+
+	matrix3x4_t	matPos, matNormal;
+	AngleMatrix(prop.m_Angles, prop.m_Origin, matPos);
+	AngleMatrix(prop.m_Angles, matNormal);
+	
+	for ( int bodyID = 0; bodyID < pStudioHdr->numbodyparts; ++bodyID )
+	{
+		OptimizedModel::BodyPartHeader_t* pVtxBodyPart = pVtxHdr->pBodyPart( bodyID );
+		mstudiobodyparts_t *pBodyPart = pStudioHdr->pBodypart( bodyID );
+
+		for ( int modelID = 0; modelID < pBodyPart->nummodels; ++modelID )
+		{
+			OptimizedModel::ModelHeader_t* pVtxModel = pVtxBodyPart->pModel(modelID);
+			mstudiomodel_t *pStudioModel = pBodyPart->pModel( modelID );
+
+			if (withTexelLighting)
+			{
+				CUtlVector<colorTexel_t> *pColorTexelArray = new CUtlVector<colorTexel_t>;
+				pResults->m_ColorTexelsArrays.AddToTail(pColorTexelArray);
+			}
+			
+			// light all unique vertexes
+			CUtlVector<colorVertex_t> *pColorVertsArray = new CUtlVector<colorVertex_t>;
+			pResults->m_ColorVertsArrays.AddToTail( pColorVertsArray );
+						
+			CUtlVector<colorVertex_t> &colorVerts = *pColorVertsArray; 
+			colorVerts.EnsureCount( pStudioModel->numvertices );
+			memset( colorVerts.Base(), 0, colorVerts.Count() * sizeof(colorVertex_t) );
+
+			int numVertexes = 0;
+			for ( int meshID = 0; meshID < pStudioModel->nummeshes; ++meshID )
+			{
+				mstudiomesh_t *pStudioMesh = pStudioModel->pMesh( meshID );
+				const mstudio_meshvertexdata_t *vertData = pStudioMesh->GetVertexData((void *)pStudioHdr);
+
+				Assert(vertData); // This can only return NULL on X360 for now
+				
+				// TODO: Move this into its own function. In fact, refactor this whole function.
+				if (withTexelLighting)
+				{
+					GenerateLightmapSamplesForMesh( matPos, matNormal, iThread, skip_prop, nFlags, prop.m_LightmapImageWidth, prop.m_LightmapImageHeight, pStudioHdr, pStudioModel, pVtxModel, meshID, pResults );
+				}
+
+				// If we do lightmapping, we also do vertex lighting as a potential fallback. This may change.
+				for ( int vertexID = 0; vertexID < pStudioMesh->numvertices; ++vertexID )
+				{
+					Vector sampleNormal;
+					Vector samplePosition;
+					// transform position and normal into world coordinate system
+					VectorTransform(*vertData->Position(vertexID), matPos, samplePosition);
+					VectorTransform(*vertData->Normal(vertexID), matNormal, sampleNormal);
+
+					if ( PositionInSolid( samplePosition ) )
+					{
+						// vertex is in solid, add to the bad list, and recover later
+						badVertex_t badVertex;
+						badVertex.m_ColorVertex = numVertexes;
+						badVertex.m_Position = samplePosition;
+						badVertex.m_Normal = sampleNormal;
+						badVerts.AddToTail( badVertex );			
+					}
+					else
+					{
+						Vector direct_pos=samplePosition;
+							
+						
+
+						Vector directColor(0,0,0);
+						ComputeDirectLightingAtPoint( direct_pos,
+														sampleNormal, directColor, iThread,
+														skip_prop, nFlags );
+						Vector indirectColor(0,0,0);
+
+						if (g_bShowStaticPropNormals)
+						{
+							directColor= sampleNormal;
+							directColor += Vector(1.0,1.0,1.0);
+							directColor *= 50.0;
+						}
+						else
+						{
+							if (numbounce >= 1)
+								ComputeIndirectLightingAtPoint( 
+									samplePosition, sampleNormal, 
+									indirectColor, iThread, true,
+									( prop.m_Flags & STATIC_PROP_IGNORE_NORMALS) != 0 );
+						}
+						
+						colorVerts[numVertexes].m_bValid = true;
+						colorVerts[numVertexes].m_Position = samplePosition;
+						VectorAdd( directColor, indirectColor, colorVerts[numVertexes].m_Color );
+					}
+					
+					numVertexes++;
+				}
+			}
+			
+			// color in the bad vertexes
+			// when entire model has no lighting origin and no valid neighbors
+			// must punt, leave black coloring
+			if ( badVerts.Count() && ( prop.m_bLightingOriginValid || badVerts.Count() != numVertexes ) )
+			{
+				for ( int nBadVertex = 0; nBadVertex < badVerts.Count(); nBadVertex++ )
+				{		
+					Vector bestPosition;
+					if ( prop.m_bLightingOriginValid )
+					{
+						// use the specified lighting origin
+						VectorCopy( prop.m_LightingOrigin, bestPosition );
+					}
+					else
+					{
+						// find the closest valid neighbor
+						int best = 0;
+						float closest = FLT_MAX;
+						for ( int nColorVertex = 0; nColorVertex < numVertexes; nColorVertex++ )
+						{
+							if ( !colorVerts[nColorVertex].m_bValid )
+							{
+								// skip invalid neighbors
+								continue;
+							}
+							Vector delta;
+							VectorSubtract( colorVerts[nColorVertex].m_Position, badVerts[nBadVertex].m_Position, delta );
+							float distance = VectorLength( delta );
+							if ( distance < closest )
+							{
+								closest = distance;
+								best    = nColorVertex;
+							}
+						}
+
+						// use the best neighbor as the direction to crawl
+						VectorCopy( colorVerts[best].m_Position, bestPosition );
+					}
+
+					// crawl toward best position
+					// sudivide to determine a closer valid point to the bad vertex, and re-light
+					Vector midPosition;
+					int numIterations = 20;
+					while ( --numIterations > 0 )
+					{
+						VectorAdd( bestPosition, badVerts[nBadVertex].m_Position, midPosition );
+						VectorScale( midPosition, 0.5f, midPosition );
+						if ( PositionInSolid( midPosition ) )
+							break;
+						bestPosition = midPosition;
+					}
+
+					// re-light from better position
+					Vector directColor;
+					ComputeDirectLightingAtPoint( bestPosition, badVerts[nBadVertex].m_Normal, directColor, iThread );
+
+					Vector indirectColor;
+					ComputeIndirectLightingAtPoint( bestPosition, badVerts[nBadVertex].m_Normal,
+													indirectColor, iThread, true );
+
+					// save results, not changing valid status
+					// to ensure this offset position is not considered as a viable candidate
+					colorVerts[badVerts[nBadVertex].m_ColorVertex].m_Position = bestPosition;
+					VectorAdd( directColor, indirectColor, colorVerts[badVerts[nBadVertex].m_ColorVertex].m_Color );
+				}
+			}
+			
+			// discard bad verts
+			badVerts.Purge();
+		}
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Write the lighitng to bsp pak lump
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::SerializeLighting()
+{
+	char		filename[MAX_PATH];
+	CUtlBuffer	utlBuf;
+
+	// illuminate them all
+	int count = m_StaticProps.Count();
+	if ( !count )
+	{
+		// nothing to do
+		return;
+	}
+
+	char mapName[MAX_PATH];
+	Q_FileBase( source, mapName, sizeof( mapName ) );
+
+	int size;
+	for (int i = 0; i < count; ++i)
+	{
+		// no need to write this file if we didn't compute the data
+		// props marked this way will not load the info anyway 
+		if ( m_StaticProps[i].m_Flags & STATIC_PROP_NO_PER_VERTEX_LIGHTING )
+			continue;
+
+		if (g_bHDR)
+		{
+			sprintf( filename, "sp_hdr_%d.vhv", i );
+		}
+		else
+		{
+			sprintf( filename, "sp_%d.vhv", i );
+		}
+
+		int totalVertexes = 0;
+		for ( int j=0; j<m_StaticProps[i].m_MeshData.Count(); j++ )
+		{
+			totalVertexes += m_StaticProps[i].m_MeshData[j].m_VertexColors.Count();
+		}
+
+		// allocate a buffer with enough padding for alignment
+		size = sizeof( HardwareVerts::FileHeader_t ) + 
+				m_StaticProps[i].m_MeshData.Count()*sizeof(HardwareVerts::MeshHeader_t) +
+				totalVertexes*4 + 2*512;
+		utlBuf.EnsureCapacity( size );
+		Q_memset( utlBuf.Base(), 0, size );
+
+		HardwareVerts::FileHeader_t *pVhvHdr = (HardwareVerts::FileHeader_t *)utlBuf.Base();
+
+		// align to start of vertex data
+		unsigned char *pVertexData = (unsigned char *)(sizeof( HardwareVerts::FileHeader_t ) + m_StaticProps[i].m_MeshData.Count()*sizeof(HardwareVerts::MeshHeader_t));
+		pVertexData = (unsigned char*)pVhvHdr + ALIGN_TO_POW2( (unsigned int)pVertexData, 512 );
+		
+		// construct header
+		pVhvHdr->m_nVersion     = VHV_VERSION;
+		pVhvHdr->m_nChecksum    = m_StaticPropDict[m_StaticProps[i].m_ModelIdx].m_pStudioHdr->checksum;
+		pVhvHdr->m_nVertexFlags = VERTEX_COLOR;
+		pVhvHdr->m_nVertexSize  = 4;
+		pVhvHdr->m_nVertexes    = totalVertexes;
+		pVhvHdr->m_nMeshes      = m_StaticProps[i].m_MeshData.Count();
+
+		for (int n=0; n<pVhvHdr->m_nMeshes; n++)
+		{
+			// construct mesh dictionary
+			HardwareVerts::MeshHeader_t *pMesh = pVhvHdr->pMesh( n );
+			pMesh->m_nLod      = m_StaticProps[i].m_MeshData[n].m_nLod;
+			pMesh->m_nVertexes = m_StaticProps[i].m_MeshData[n].m_VertexColors.Count();
+			pMesh->m_nOffset   = (unsigned int)pVertexData - (unsigned int)pVhvHdr; 
+
+			// construct vertexes
+			for (int k=0; k<pMesh->m_nVertexes; k++)
+			{
+				Vector &vertexColor = m_StaticProps[i].m_MeshData[n].m_VertexColors[k];
+
+				ColorRGBExp32 rgbColor;
+				VectorToColorRGBExp32( vertexColor, rgbColor );
+				unsigned char dstColor[4];
+				ConvertRGBExp32ToRGBA8888( &rgbColor, dstColor );
+
+				// b,g,r,a order
+				pVertexData[0] = dstColor[2];
+				pVertexData[1] = dstColor[1];
+				pVertexData[2] = dstColor[0];
+				pVertexData[3] = dstColor[3];
+				pVertexData += 4;
+			}
+		}
+
+		// align to end of file
+		pVertexData = (unsigned char *)((unsigned int)pVertexData - (unsigned int)pVhvHdr);
+		pVertexData = (unsigned char*)pVhvHdr + ALIGN_TO_POW2( (unsigned int)pVertexData, 512 );
+
+		AddBufferToPak( GetPakFile(), filename, (void*)pVhvHdr, pVertexData - (unsigned char*)pVhvHdr, false );
+	}
+
+	for (int i = 0; i < count; ++i)
+	{
+		const int kAlignment = 512;
+		// no need to write this file if we didn't compute the data
+		// props marked this way will not load the info anyway 
+		if (m_StaticProps[i].m_Flags & STATIC_PROP_NO_PER_TEXEL_LIGHTING)
+			continue;
+
+		sprintf(filename, "texelslighting_%d.ppl", i);
+
+		ImageFormat fmt = m_StaticProps[i].m_LightmapImageFormat;
+
+		unsigned int totalTexelSizeBytes = 0;
+		for (int j = 0; j < m_StaticProps[i].m_MeshData.Count(); j++)
+		{
+			totalTexelSizeBytes += m_StaticProps[i].m_MeshData[j].m_TexelsEncoded.Count();
+		}
+
+		// allocate a buffer with enough padding for alignment
+		size = sizeof(HardwareTexels::FileHeader_t) 
+			 + m_StaticProps[i].m_MeshData.Count() * sizeof(HardwareTexels::MeshHeader_t) 
+			 + totalTexelSizeBytes
+			 + 2 * kAlignment;
+		
+		utlBuf.EnsureCapacity(size);
+		Q_memset(utlBuf.Base(), 0, size);
+
+		HardwareTexels::FileHeader_t *pVhtHdr = (HardwareTexels::FileHeader_t *)utlBuf.Base();
+
+		// align start of texel data
+		unsigned char *pTexelData = (unsigned char *)(sizeof(HardwareTexels::FileHeader_t) + m_StaticProps[i].m_MeshData.Count() * sizeof(HardwareTexels::MeshHeader_t));
+		pTexelData = (unsigned char*)pVhtHdr + ALIGN_TO_POW2((unsigned int)pTexelData, kAlignment);
+
+		pVhtHdr->m_nVersion	    = VHT_VERSION;
+		pVhtHdr->m_nChecksum    = m_StaticPropDict[m_StaticProps[i].m_ModelIdx].m_pStudioHdr->checksum;
+		pVhtHdr->m_nTexelFormat = fmt;
+		pVhtHdr->m_nMeshes      = m_StaticProps[i].m_MeshData.Count();
+
+		for (int n = 0; n < pVhtHdr->m_nMeshes; n++)
+		{
+			HardwareTexels::MeshHeader_t *pMesh = pVhtHdr->pMesh(n);
+			pMesh->m_nLod = m_StaticProps[i].m_MeshData[n].m_nLod;
+			pMesh->m_nOffset = (unsigned int)pTexelData - (unsigned int)pVhtHdr;
+			pMesh->m_nBytes = m_StaticProps[i].m_MeshData[n].m_TexelsEncoded.Count();
+			pMesh->m_nWidth = m_StaticProps[i].m_LightmapImageWidth;
+			pMesh->m_nHeight = m_StaticProps[i].m_LightmapImageHeight;
+
+			Q_memcpy(pTexelData, m_StaticProps[i].m_MeshData[n].m_TexelsEncoded.Base(), m_StaticProps[i].m_MeshData[n].m_TexelsEncoded.Count());
+			pTexelData += m_StaticProps[i].m_MeshData[n].m_TexelsEncoded.Count();
+		}
+
+		pTexelData = (unsigned char *)((unsigned int)pTexelData - (unsigned int)pVhtHdr);
+		pTexelData = (unsigned char*)pVhtHdr + ALIGN_TO_POW2((unsigned int)pTexelData, kAlignment);
+
+		AddBufferToPak(GetPakFile(), filename, (void*)pVhtHdr, pTexelData - (unsigned char*)pVhtHdr, false);
+	}
+}
+
+void CVradStaticPropMgr::VMPI_ProcessStaticProp_Static( int iThread, uint64 iStaticProp, MessageBuffer *pBuf )
+{
+	g_StaticPropMgr.VMPI_ProcessStaticProp( iThread, iStaticProp, pBuf );
+}
+
+void CVradStaticPropMgr::VMPI_ReceiveStaticPropResults_Static( uint64 iStaticProp, MessageBuffer *pBuf, int iWorker )
+{
+	g_StaticPropMgr.VMPI_ReceiveStaticPropResults( iStaticProp, pBuf, iWorker );
+}
+	
+//-----------------------------------------------------------------------------
+// Called on workers to do the computation for a static prop and send
+// it to the master.
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::VMPI_ProcessStaticProp( int iThread, int iStaticProp, MessageBuffer *pBuf )
+{
+	// Compute the lighting.
+	CComputeStaticPropLightingResults results;
+	ComputeLighting( m_StaticProps[iStaticProp], iThread, iStaticProp, &results );
+
+	VMPI_SetCurrentStage( "EncodeLightingResults" );
+	
+	// Encode the results.
+	int nLists = results.m_ColorVertsArrays.Count();
+	pBuf->write( &nLists, sizeof( nLists ) );
+	
+	for ( int i=0; i < nLists; i++ )
+	{
+		CUtlVector<colorVertex_t> &curList = *results.m_ColorVertsArrays[i];
+		int count = curList.Count();
+		pBuf->write( &count, sizeof( count ) );
+		pBuf->write( curList.Base(), curList.Count() * sizeof( colorVertex_t ) );
+	}
+
+	nLists = results.m_ColorTexelsArrays.Count();
+	pBuf->write(&nLists, sizeof(nLists));
+
+	for (int i = 0; i < nLists; i++)
+	{
+		CUtlVector<colorTexel_t> &curList = *results.m_ColorTexelsArrays[i];
+		int count = curList.Count();
+		pBuf->write(&count, sizeof(count));
+		pBuf->write(curList.Base(), curList.Count() * sizeof(colorTexel_t));
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Called on the master when a worker finishes processing a static prop.
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::VMPI_ReceiveStaticPropResults( int iStaticProp, MessageBuffer *pBuf, int iWorker )
+{
+	// Read in the results.
+	CComputeStaticPropLightingResults results;
+	
+	int nLists;
+	pBuf->read( &nLists, sizeof( nLists ) );
+	
+	for ( int i=0; i < nLists; i++ )
+	{
+		CUtlVector<colorVertex_t> *pList = new CUtlVector<colorVertex_t>;
+		results.m_ColorVertsArrays.AddToTail( pList );
+		
+		int count;
+		pBuf->read( &count, sizeof( count ) );
+		pList->SetSize( count );
+		pBuf->read( pList->Base(), count * sizeof( colorVertex_t ) );
+	}
+
+	pBuf->read(&nLists, sizeof(nLists));
+
+	for (int i = 0; i < nLists; i++)
+	{
+		CUtlVector<colorTexel_t> *pList = new CUtlVector<colorTexel_t>;
+		results.m_ColorTexelsArrays.AddToTail(pList);
+
+		int count;
+		pBuf->read(&count, sizeof(count));
+		pList->SetSize(count);
+		pBuf->read(pList->Base(), count * sizeof(colorTexel_t));
+	}
+	
+	// Apply the results.
+	ApplyLightingToStaticProp( iStaticProp, m_StaticProps[iStaticProp], &results );
+}
+
+
+void CVradStaticPropMgr::ComputeLightingForProp( int iThread, int iStaticProp )
+{
+	// Compute the lighting.
+	CComputeStaticPropLightingResults results;
+	ComputeLighting( m_StaticProps[iStaticProp], iThread, iStaticProp, &results );
+	ApplyLightingToStaticProp( iStaticProp, m_StaticProps[iStaticProp], &results );
+}
+
+void CVradStaticPropMgr::ThreadComputeStaticPropLighting( int iThread, void *pUserData )
+{
+	while (1)
+	{
+		int j = GetThreadWork ();
+		if (j == -1)
+			break;
+		CComputeStaticPropLightingResults results;
+		g_StaticPropMgr.ComputeLightingForProp( iThread, j );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Computes lighting for the static props.
+// Must be after all other surface lighting has been computed for the indirect sampling.
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::ComputeLighting( int iThread )
+{
+	// illuminate them all
+	int count = m_StaticProps.Count();
+	if ( !count )
+	{
+		// nothing to do
+		return;
+	}
+
+	StartPacifier( "Computing static prop lighting : " );
+
+	// ensure any traces against us are ignored because we have no inherit lighting contribution
+	m_bIgnoreStaticPropTrace = true;
+
+	if ( g_bUseMPI )
+	{
+		// Distribute the work among the workers.
+		VMPI_SetCurrentStage( "CVradStaticPropMgr::ComputeLighting" );
+		
+		DistributeWork( 
+			count, 
+			VMPI_DISTRIBUTEWORK_PACKETID,
+			&CVradStaticPropMgr::VMPI_ProcessStaticProp_Static, 
+			&CVradStaticPropMgr::VMPI_ReceiveStaticPropResults_Static );
+	}
+	else
+	{
+		RunThreadsOn(count, true, ThreadComputeStaticPropLighting);
+	}
+
+	// restore default
+	m_bIgnoreStaticPropTrace = false;
+
+	// save data to bsp
+	SerializeLighting();
+
+	EndPacifier( true );
+}
+
+//-----------------------------------------------------------------------------
+// Adds all static prop polys to the ray trace store.
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::AddPolysForRayTrace( void )
+{
+	int count = m_StaticProps.Count();
+	if ( !count )
+	{
+		// nothing to do
+		return;
+	}
+
+	// Triangle coverage of 1 (full coverage)
+	Vector fullCoverage;
+	fullCoverage.x = 1.0f;
+
+	for ( int nProp = 0; nProp < count; ++nProp )
+	{
+		CStaticProp &prop = m_StaticProps[nProp];
+		StaticPropDict_t &dict = m_StaticPropDict[prop.m_ModelIdx];
+
+		if ( prop.m_Flags & STATIC_PROP_NO_SHADOW )
+			continue;
+
+		// If not using static prop polys, use AABB
+		if ( !g_bStaticPropPolys )
+		{
+			if ( dict.m_pModel )
+			{
+				VMatrix xform;
+				xform.SetupMatrixOrgAngles ( prop.m_Origin, prop.m_Angles );
+				ICollisionQuery *queryModel = s_pPhysCollision->CreateQueryModel( dict.m_pModel );
+				for ( int nConvex = 0; nConvex < queryModel->ConvexCount(); ++nConvex )
+				{
+					for ( int nTri = 0; nTri < queryModel->TriangleCount( nConvex ); ++nTri )
+					{
+						Vector verts[3];
+						queryModel->GetTriangleVerts( nConvex, nTri, verts );
+						for ( int nVert = 0; nVert < 3; ++nVert )
+							verts[nVert] = xform.VMul4x3(verts[nVert]);
+						g_RtEnv.AddTriangle ( TRACE_ID_STATICPROP | nProp, verts[0], verts[1], verts[2], fullCoverage );
+					}
+				}
+				s_pPhysCollision->DestroyQueryModel( queryModel );
+			}
+			else
+			{
+				VectorAdd ( dict.m_Mins, prop.m_Origin, prop.m_mins );
+				VectorAdd ( dict.m_Maxs, prop.m_Origin, prop.m_maxs );
+				g_RtEnv.AddAxisAlignedRectangularSolid ( TRACE_ID_STATICPROP | nProp, prop.m_mins, prop.m_maxs, fullCoverage );
+			}
+			
+			continue;
+		}
+
+		studiohdr_t	*pStudioHdr = dict.m_pStudioHdr;
+		OptimizedModel::FileHeader_t *pVtxHdr = (OptimizedModel::FileHeader_t *)dict.m_VtxBuf.Base();
+		if ( !pStudioHdr || !pVtxHdr )
+		{
+			// must have model and its verts for decoding triangles
+			return;
+		}
+		// only init the triangle table the first time
+		bool bInitTriangles = dict.m_triangleMaterialIndex.Count() ? false : true;
+		int triangleIndex = 0;
+
+		// meshes are deeply hierarchial, divided between three stores, follow the white rabbit
+		// body parts -> models -> lod meshes -> strip groups -> strips
+		// the vertices and indices are pooled, the trick is knowing the offset to determine your indexed base 
+		for ( int bodyID = 0; bodyID < pStudioHdr->numbodyparts; ++bodyID )
+		{
+			OptimizedModel::BodyPartHeader_t* pVtxBodyPart = pVtxHdr->pBodyPart( bodyID );
+			mstudiobodyparts_t *pBodyPart = pStudioHdr->pBodypart( bodyID );
+
+			for ( int modelID = 0; modelID < pBodyPart->nummodels; ++modelID )
+			{
+				OptimizedModel::ModelHeader_t* pVtxModel = pVtxBodyPart->pModel( modelID );
+				mstudiomodel_t *pStudioModel = pBodyPart->pModel( modelID );
+
+				// assuming lod 0, could iterate if required
+				int nLod = 0;
+				OptimizedModel::ModelLODHeader_t *pVtxLOD = pVtxModel->pLOD( nLod );
+
+				for ( int nMesh = 0; nMesh < pStudioModel->nummeshes; ++nMesh )
+				{
+					// check if this mesh's material is in the no shadow material name list
+					mstudiomesh_t* pMesh = pStudioModel->pMesh( nMesh );
+					mstudiotexture_t *pTxtr=pStudioHdr->pTexture(pMesh->material);
+					//printf("mat idx=%d mat name=%s\n",pMesh->material,pTxtr->pszName());
+					bool bSkipThisMesh = false;
+					for(int check=0; check<g_NonShadowCastingMaterialStrings.Count(); check++)
+					{
+						if ( Q_stristr( pTxtr->pszName(),
+										g_NonShadowCastingMaterialStrings[check] ) )
+						{
+							//printf("skip mat name=%s\n",pTxtr->pszName());
+							bSkipThisMesh = true;
+							break;
+						}
+					}
+					if ( bSkipThisMesh)
+						continue;
+
+					int shadowTextureIndex = -1;
+					if ( dict.m_textureShadowIndex.Count() )
+					{
+						shadowTextureIndex = dict.m_textureShadowIndex[pMesh->material];
+					}
+
+
+					OptimizedModel::MeshHeader_t* pVtxMesh = pVtxLOD->pMesh( nMesh );
+					const mstudio_meshvertexdata_t *vertData = pMesh->GetVertexData( (void *)pStudioHdr );
+					Assert( vertData ); // This can only return NULL on X360 for now
+
+					for ( int nGroup = 0; nGroup < pVtxMesh->numStripGroups; ++nGroup )
+					{
+						OptimizedModel::StripGroupHeader_t* pStripGroup = pVtxMesh->pStripGroup( nGroup );
+
+						int nStrip;
+						for ( nStrip = 0; nStrip < pStripGroup->numStrips; nStrip++ )
+						{
+							OptimizedModel::StripHeader_t *pStrip = pStripGroup->pStrip( nStrip );
+
+							if ( pStrip->flags & OptimizedModel::STRIP_IS_TRILIST )
+							{
+								for ( int i = 0; i < pStrip->numIndices; i += 3 )
+								{
+									int idx = pStrip->indexOffset + i;
+
+									unsigned short i1 = *pStripGroup->pIndex( idx );
+									unsigned short i2 = *pStripGroup->pIndex( idx + 1 );
+									unsigned short i3 = *pStripGroup->pIndex( idx + 2 );
+
+									int vertex1 = pStripGroup->pVertex( i1 )->origMeshVertID;
+									int vertex2 = pStripGroup->pVertex( i2 )->origMeshVertID;
+									int vertex3 = pStripGroup->pVertex( i3 )->origMeshVertID;
+
+									// transform position into world coordinate system
+									matrix3x4_t	matrix;
+									AngleMatrix( prop.m_Angles, prop.m_Origin, matrix );
+
+									Vector position1;
+									Vector position2;
+									Vector position3;
+									VectorTransform( *vertData->Position( vertex1 ), matrix, position1 );
+									VectorTransform( *vertData->Position( vertex2 ), matrix, position2 );
+									VectorTransform( *vertData->Position( vertex3 ), matrix, position3 );
+									unsigned short flags = 0;
+									int materialIndex = -1;
+									Vector color = vec3_origin;
+									if ( shadowTextureIndex >= 0 )
+									{
+										if ( bInitTriangles )
+										{
+											// add texture space and texture index to material database
+											// now
+											float coverage = g_ShadowTextureList.ComputeCoverageForTriangle(shadowTextureIndex, *vertData->Texcoord(vertex1), *vertData->Texcoord(vertex2), *vertData->Texcoord(vertex3) );
+											if ( coverage < 1.0f )
+											{
+												materialIndex = g_ShadowTextureList.AddMaterialEntry( shadowTextureIndex, *vertData->Texcoord(vertex1), *vertData->Texcoord(vertex2), *vertData->Texcoord(vertex3) );
+												color.x = coverage;
+											}
+											else
+											{
+												materialIndex = -1;
+											}
+											dict.m_triangleMaterialIndex.AddToTail(materialIndex);
+										}
+										else
+										{
+											materialIndex = dict.m_triangleMaterialIndex[triangleIndex];
+											triangleIndex++;
+										}
+										if ( materialIndex >= 0 )
+										{
+											flags = FCACHETRI_TRANSPARENT;
+										}
+									}
+// 		printf( "\ngl 3\n" );
+// 		printf( "gl %6.3f %6.3f %6.3f 1 0 0\n", XYZ(position1));
+// 		printf( "gl %6.3f %6.3f %6.3f 0 1 0\n", XYZ(position2));
+// 		printf( "gl %6.3f %6.3f %6.3f 0 0 1\n", XYZ(position3));
+									g_RtEnv.AddTriangle( TRACE_ID_STATICPROP | nProp,
+														 position1, position2, position3,
+														 color, flags, materialIndex);
+								}
+							}
+							else
+							{
+								// all tris expected to be discrete tri lists
+								// must fixme if stripping ever occurs
+								printf( "unexpected strips found\n" );
+								Assert( 0 );
+								return;
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+}
+
+struct tl_tri_t
+{
+	Vector	p0;
+	Vector	p1;
+	Vector	p2;
+	Vector	n0;
+	Vector	n1;
+	Vector	n2;
+
+	bool operator == (const tl_tri_t &t) const 
+	{ 
+		return ( p0 == t.p0 && 
+				p1 == t.p1 && 
+				p2 == t.p2 &&
+				n0 == t.n0 &&
+				n1 == t.n1 &&
+				n2 == t.n2 );
+	}
+};
+
+struct tl_vert_t
+{
+	Vector m_position;
+	CUtlLinkedList< tl_tri_t, int > m_triList;
+};
+
+void AddTriVertsToList( CUtlVector< tl_vert_t > &triListVerts, int vertIndex, Vector vertPosition, Vector p0, Vector p1, Vector p2, Vector n0, Vector n1, Vector n2 )
+{
+	tl_tri_t tlTri;
+
+	tlTri.p0 = p0;
+	tlTri.p1 = p1;
+	tlTri.p2 = p2;
+	tlTri.n0 = n0;
+	tlTri.n1 = n1;
+	tlTri.n2 = n2;
+
+	triListVerts.EnsureCapacity( vertIndex+1 );
+
+	triListVerts[vertIndex].m_position = vertPosition;
+
+	int index = triListVerts[vertIndex].m_triList.Find( tlTri );
+	if ( !triListVerts[vertIndex].m_triList.IsValidIndex( index ) )
+	{
+		// not in list, add to list of triangles
+		triListVerts[vertIndex].m_triList.AddToTail( tlTri );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Builds a list of tris for every vertex
+//-----------------------------------------------------------------------------
+void CVradStaticPropMgr::BuildTriList( CStaticProp &prop )
+{
+	// the generated list will consist of a list of verts
+	// each vert will have a linked list of triangles that it belongs to
+	CUtlVector< tl_vert_t >	triListVerts;
+
+	StaticPropDict_t &dict = m_StaticPropDict[prop.m_ModelIdx];
+	studiohdr_t	*pStudioHdr = dict.m_pStudioHdr;
+	OptimizedModel::FileHeader_t *pVtxHdr = (OptimizedModel::FileHeader_t *)dict.m_VtxBuf.Base();
+	if ( !pStudioHdr || !pVtxHdr )
+	{
+		// must have model and its verts for decoding triangles
+		return;
+	}
+
+	// meshes are deeply hierarchial, divided between three stores, follow the white rabbit
+	// body parts -> models -> lod meshes -> strip groups -> strips
+	// the vertices and indices are pooled, the trick is knowing the offset to determine your indexed base 
+	for ( int bodyID = 0; bodyID < pStudioHdr->numbodyparts; ++bodyID )
+	{
+		OptimizedModel::BodyPartHeader_t* pVtxBodyPart = pVtxHdr->pBodyPart( bodyID );
+		mstudiobodyparts_t *pBodyPart = pStudioHdr->pBodypart( bodyID );
+
+		for ( int modelID = 0; modelID < pBodyPart->nummodels; ++modelID )
+		{
+			OptimizedModel::ModelHeader_t* pVtxModel = pVtxBodyPart->pModel( modelID );
+			mstudiomodel_t *pStudioModel = pBodyPart->pModel( modelID );
+
+			// get the specified lod, assuming lod 0
+			int nLod = 0;
+			OptimizedModel::ModelLODHeader_t *pVtxLOD = pVtxModel->pLOD( nLod );
+
+			// must reset because each model has their own vertexes [0..n]
+			// in order for this to be monolithic for the entire prop the list must be segmented
+			triListVerts.Purge();
+
+			for ( int nMesh = 0; nMesh < pStudioModel->nummeshes; ++nMesh )
+			{
+				mstudiomesh_t* pMesh = pStudioModel->pMesh( nMesh );
+				OptimizedModel::MeshHeader_t* pVtxMesh = pVtxLOD->pMesh( nMesh );
+				const mstudio_meshvertexdata_t *vertData = pMesh->GetVertexData( (void *)pStudioHdr );
+				Assert( vertData ); // This can only return NULL on X360 for now
+
+				for ( int nGroup = 0; nGroup < pVtxMesh->numStripGroups; ++nGroup )
+				{
+					OptimizedModel::StripGroupHeader_t* pStripGroup = pVtxMesh->pStripGroup( nGroup );
+
+					int nStrip;
+					for ( nStrip = 0; nStrip < pStripGroup->numStrips; nStrip++ )
+					{
+						OptimizedModel::StripHeader_t *pStrip = pStripGroup->pStrip( nStrip );
+
+						if ( pStrip->flags & OptimizedModel::STRIP_IS_TRILIST )
+						{
+							for ( int i = 0; i < pStrip->numIndices; i += 3 )
+							{
+								int idx = pStrip->indexOffset + i;
+
+								unsigned short i1 = *pStripGroup->pIndex( idx );
+								unsigned short i2 = *pStripGroup->pIndex( idx + 1 );
+								unsigned short i3 = *pStripGroup->pIndex( idx + 2 );
+
+								int vertex1 = pStripGroup->pVertex( i1 )->origMeshVertID;
+								int vertex2 = pStripGroup->pVertex( i2 )->origMeshVertID;
+								int vertex3 = pStripGroup->pVertex( i3 )->origMeshVertID;
+
+								// transform position into world coordinate system
+								matrix3x4_t	matrix;
+								AngleMatrix( prop.m_Angles, prop.m_Origin, matrix );
+
+								Vector position1;
+								Vector position2;
+								Vector position3;
+								VectorTransform( *vertData->Position( vertex1 ), matrix, position1 );
+								VectorTransform( *vertData->Position( vertex2 ), matrix, position2 );
+								VectorTransform( *vertData->Position( vertex3 ), matrix, position3 );
+
+								Vector normal1;
+								Vector normal2;
+								Vector normal3;
+								VectorTransform( *vertData->Normal( vertex1 ), matrix, normal1 );
+								VectorTransform( *vertData->Normal( vertex2 ), matrix, normal2 );
+								VectorTransform( *vertData->Normal( vertex3 ), matrix, normal3 );
+
+								AddTriVertsToList( triListVerts, pMesh->vertexoffset + vertex1, position1, position1, position2, position3, normal1, normal2, normal3 );
+								AddTriVertsToList( triListVerts, pMesh->vertexoffset + vertex2, position2, position1, position2, position3, normal1, normal2, normal3 );
+								AddTriVertsToList( triListVerts, pMesh->vertexoffset + vertex3, position3, position1, position2, position3, normal1, normal2, normal3 );
+							}
+						}
+						else
+						{
+							// all tris expected to be discrete tri lists
+							// must fixme if stripping ever occurs
+							printf( "unexpected strips found\n" );
+							Assert( 0 );
+							return;
+						}
+					}
+				}
+			}
+		}
+	}
+}
+
+const vertexFileHeader_t * mstudiomodel_t::CacheVertexData( void *pModelData )
+{
+	studiohdr_t *pActiveStudioHdr = static_cast<studiohdr_t *>(pModelData);
+	Assert( pActiveStudioHdr );
+
+	if ( pActiveStudioHdr->pVertexBase )
+	{
+		return (vertexFileHeader_t *)pActiveStudioHdr->pVertexBase;
+	}
+
+	// mandatory callback to make requested data resident
+	// load and persist the vertex file
+	char fileName[MAX_PATH];
+	strcpy( fileName, "models/" );	
+	strcat( fileName, pActiveStudioHdr->pszName() );
+	Q_StripExtension( fileName, fileName, sizeof( fileName ) );
+	strcat( fileName, ".vvd" );
+
+	// load the model
+	FileHandle_t fileHandle = g_pFileSystem->Open( fileName, "rb" );
+	if ( !fileHandle )
+	{
+		Error( "Unable to load vertex data \"%s\"\n", fileName );
+	}
+
+	// Get the file size
+	int vvdSize = g_pFileSystem->Size( fileHandle );
+	if ( vvdSize == 0 )
+	{
+		g_pFileSystem->Close( fileHandle );
+		Error( "Bad size for vertex data \"%s\"\n", fileName );
+	}
+
+	vertexFileHeader_t *pVvdHdr = (vertexFileHeader_t *)malloc( vvdSize );
+	g_pFileSystem->Read( pVvdHdr, vvdSize, fileHandle );
+	g_pFileSystem->Close( fileHandle );
+
+	// check header
+	if ( pVvdHdr->id != MODEL_VERTEX_FILE_ID )
+	{
+		Error("Error Vertex File %s id %d should be %d\n", fileName, pVvdHdr->id, MODEL_VERTEX_FILE_ID);
+	}
+	if ( pVvdHdr->version != MODEL_VERTEX_FILE_VERSION )
+	{
+		Error("Error Vertex File %s version %d should be %d\n", fileName, pVvdHdr->version, MODEL_VERTEX_FILE_VERSION);
+	}
+	if ( pVvdHdr->checksum != pActiveStudioHdr->checksum )
+	{
+		Error("Error Vertex File %s checksum %d should be %d\n", fileName, pVvdHdr->checksum, pActiveStudioHdr->checksum);
+	}
+
+	// need to perform mesh relocation fixups
+	// allocate a new copy
+	vertexFileHeader_t *pNewVvdHdr = (vertexFileHeader_t *)malloc( vvdSize );
+	if ( !pNewVvdHdr )
+	{
+		Error( "Error allocating %d bytes for Vertex File '%s'\n", vvdSize, fileName );
+	}
+
+	// load vertexes and run fixups
+	Studio_LoadVertexes( pVvdHdr, pNewVvdHdr, 0, true );
+
+	// discard original
+	free( pVvdHdr );
+	pVvdHdr = pNewVvdHdr;
+
+	pActiveStudioHdr->pVertexBase = (void*)pVvdHdr;
+	return pVvdHdr;
+}
+
+// ------------------------------------------------------------------------------------------------
+// ------------------------------------------------------------------------------------------------
+// ------------------------------------------------------------------------------------------------
+struct ColorTexelValue
+{
+	Vector mLinearColor;	// Linear color value for this texel
+	bool mValidData;		// Whether there is valid data in this texel.
+	size_t mTriangleIndex;	// Which triangle we used to generate the texel.
+};
+
+// ------------------------------------------------------------------------------------------------
+inline int ComputeLinearPos( int _x, int _y, int _resX, int _resY )
+{
+	return Min( Max( 0, _y ), _resY - 1 ) * _resX
+		 + Min( Max( 0, _x ), _resX - 1 );
+}
+
+// ------------------------------------------------------------------------------------------------
+inline float ComputeBarycentricDistanceToTri( Vector _barycentricCoord, Vector2D _v[3] )
+{
+	Vector2D realPos = _barycentricCoord.x * _v[0]
+		             + _barycentricCoord.y * _v[1]
+					 + _barycentricCoord.z * _v[2];
+
+	int minIndex = 0;
+	float minVal = _barycentricCoord[0];
+	for (int i = 1; i < 3; ++i) {
+		if (_barycentricCoord[i] < minVal) {
+			minVal = _barycentricCoord[i];
+			minIndex = i;
+		}
+	}
+
+	Vector2D& first  = _v[ (minIndex + 1) % 3];
+	Vector2D& second = _v[ (minIndex + 2) % 3];
+
+	return CalcDistanceToLineSegment2D( realPos, first, second );
+}
+
+// ------------------------------------------------------------------------------------------------
+static void GenerateLightmapSamplesForMesh( const matrix3x4_t& _matPos, const matrix3x4_t& _matNormal, int _iThread, int _skipProp, int _flags, int _lightmapResX, int _lightmapResY, studiohdr_t* _pStudioHdr, mstudiomodel_t* _pStudioModel, OptimizedModel::ModelHeader_t* _pVtxModel, int _meshID, CComputeStaticPropLightingResults *_outResults )
+{
+	// Could iterate and gen this if needed.
+	int nLod = 0;
+
+	OptimizedModel::ModelLODHeader_t *pVtxLOD = _pVtxModel->pLOD(nLod);
+
+	CUtlVector<colorTexel_t> &colorTexels = (*_outResults->m_ColorTexelsArrays.Tail());
+	const int cTotalPixelCount = _lightmapResX * _lightmapResY;
+	colorTexels.EnsureCount(cTotalPixelCount);
+	memset(colorTexels.Base(), 0, colorTexels.Count() * sizeof(colorTexel_t));
+
+	for (int i = 0; i < colorTexels.Count(); ++i) {
+		colorTexels[i].m_fDistanceToTri = FLT_MAX;	
+	}
+
+	mstudiomesh_t* pMesh = _pStudioModel->pMesh(_meshID);
+	OptimizedModel::MeshHeader_t* pVtxMesh = pVtxLOD->pMesh(_meshID);
+	const mstudio_meshvertexdata_t *vertData = pMesh->GetVertexData((void *)_pStudioHdr);
+	Assert(vertData); // This can only return NULL on X360 for now
+
+	for (int nGroup = 0; nGroup < pVtxMesh->numStripGroups; ++nGroup)
+	{
+		OptimizedModel::StripGroupHeader_t* pStripGroup = pVtxMesh->pStripGroup(nGroup);
+
+		int nStrip;
+		for (nStrip = 0; nStrip < pStripGroup->numStrips; nStrip++)
+		{
+			OptimizedModel::StripHeader_t *pStrip = pStripGroup->pStrip(nStrip);
+
+			// If this hits, re-factor the code to iterate over triangles, and build the triangles
+			// from the underlying structures.
+			Assert((pStrip->flags & OptimizedModel::STRIP_IS_TRISTRIP) == 0);
+
+			if (pStrip->flags & OptimizedModel::STRIP_IS_TRILIST)
+			{
+				for (int i = 0; i < pStrip->numIndices; i += 3)
+				{
+					int idx = pStrip->indexOffset + i;
+
+					unsigned short i1 = *pStripGroup->pIndex(idx);
+					unsigned short i2 = *pStripGroup->pIndex(idx + 1);
+					unsigned short i3 = *pStripGroup->pIndex(idx + 2);
+
+					int vertex1 = pStripGroup->pVertex(i1)->origMeshVertID;
+					int vertex2 = pStripGroup->pVertex(i2)->origMeshVertID;
+					int vertex3 = pStripGroup->pVertex(i3)->origMeshVertID;
+
+					Vector modelPos[3] = {
+						*vertData->Position(vertex1),
+						*vertData->Position(vertex2),
+						*vertData->Position(vertex3)
+					};
+
+					Vector modelNormal[3] = {
+						*vertData->Normal(vertex1),
+						*vertData->Normal(vertex2),
+						*vertData->Normal(vertex3)
+					};
+
+					Vector worldPos[3];
+					Vector worldNormal[3];
+
+					VectorTransform(modelPos[0], _matPos, worldPos[0]);
+					VectorTransform(modelPos[1], _matPos, worldPos[1]);
+					VectorTransform(modelPos[2], _matPos, worldPos[2]);
+
+					VectorTransform(modelNormal[0], _matNormal, worldNormal[0]);
+					VectorTransform(modelNormal[1], _matNormal, worldNormal[1]);
+					VectorTransform(modelNormal[2], _matNormal, worldNormal[2]);
+
+					Vector2D texcoord[3] = { 
+						*vertData->Texcoord(vertex1),
+						*vertData->Texcoord(vertex2),
+						*vertData->Texcoord(vertex3)
+					};
+
+					Rasterizer rasterizer(texcoord[0], texcoord[1], texcoord[2],
+					                      _lightmapResX, _lightmapResY);
+
+					for (auto it = rasterizer.begin(); it != rasterizer.end(); ++it)
+					{
+						size_t linearPos = rasterizer.GetLinearPos(it);
+						Assert(linearPos < cTotalPixelCount);
+
+						if ( colorTexels[linearPos].m_bValid )
+						{
+							continue;
+						}						
+
+						float ourDistancetoTri = ComputeBarycentricDistanceToTri( it->barycentric, texcoord );
+
+						bool doWrite =  it->insideTriangle
+							        || !colorTexels[linearPos].m_bPossiblyInteresting
+									||  colorTexels[linearPos].m_fDistanceToTri > ourDistancetoTri;
+
+						if (doWrite)
+						{
+							Vector itWorldPos = worldPos[0] * it->barycentric.x
+											  + worldPos[1] * it->barycentric.y
+											  + worldPos[2] * it->barycentric.z;
+
+							Vector itWorldNormal = worldNormal[0] * it->barycentric.x
+												 + worldNormal[1] * it->barycentric.y
+												 + worldNormal[2] * it->barycentric.z;
+							itWorldNormal.NormalizeInPlace();
+
+							colorTexels[linearPos].m_WorldPosition = itWorldPos;
+							colorTexels[linearPos].m_WorldNormal = itWorldNormal;
+							colorTexels[linearPos].m_bValid = it->insideTriangle;
+							colorTexels[linearPos].m_bPossiblyInteresting = true;
+							colorTexels[linearPos].m_fDistanceToTri = ourDistancetoTri;
+						}
+					}
+				}
+			}
+		}
+	}
+
+	// Process neighbors to the valid region. Walk through the existing array, look for samples that
+	// are not valid but are adjacent to valid samples. Works if we are only bilinearly sampling
+	// on the other side.
+	// First attempt: Just pretend the triangle was larger and cast a ray from this new world pos 
+	// as above.
+	int linearPos = 0;
+	for ( int j = 0; j < _lightmapResY; ++j )
+	{
+		for (int i = 0; i < _lightmapResX; ++i )
+		{
+			bool shouldProcess = colorTexels[linearPos].m_bValid;
+			// Are any of the eight neighbors valid??
+			if ( colorTexels[linearPos].m_bPossiblyInteresting )
+			{
+				// Look at our neighborhood (3x3 centerd on us). 
+				shouldProcess = shouldProcess
+				             || colorTexels[ComputeLinearPos( i - 1, j - 1, _lightmapResX, _lightmapResY )].m_bValid  // TL
+							 || colorTexels[ComputeLinearPos( i    , j - 1, _lightmapResX, _lightmapResY )].m_bValid  // T
+							 || colorTexels[ComputeLinearPos( i + 1, j - 1, _lightmapResX, _lightmapResY )].m_bValid  // TR
+
+							 || colorTexels[ComputeLinearPos( i - 1, j    , _lightmapResX, _lightmapResY )].m_bValid  // L
+							 || colorTexels[ComputeLinearPos( i + 1, j    , _lightmapResX, _lightmapResY )].m_bValid  // R
+
+							 || colorTexels[ComputeLinearPos( i - 1, j + 1, _lightmapResX, _lightmapResY )].m_bValid  // BL
+							 || colorTexels[ComputeLinearPos( i    , j + 1, _lightmapResX, _lightmapResY )].m_bValid  // B
+							 || colorTexels[ComputeLinearPos( i + 1, j + 1, _lightmapResX, _lightmapResY )].m_bValid; // BR
+			}
+
+			if (shouldProcess)
+			{
+				Vector directColor(0, 0, 0),
+					   indirectColor(0, 0, 0);
+
+
+				ComputeDirectLightingAtPoint( colorTexels[linearPos].m_WorldPosition, colorTexels[linearPos].m_WorldNormal, directColor, _iThread, _skipProp, _flags);
+
+				if (numbounce >= 1) {
+					ComputeIndirectLightingAtPoint( colorTexels[linearPos].m_WorldPosition, colorTexels[linearPos].m_WorldNormal, indirectColor, _iThread, true, (_flags & GATHERLFLAGS_IGNORE_NORMALS) != 0 );
+				}
+
+				VectorAdd(directColor, indirectColor, colorTexels[linearPos].m_Color);
+			}
+
+			++linearPos;
+		}
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+static int GetTexelCount(unsigned int _resX, unsigned int _resY, bool _mipmaps)
+{
+	// Because they are unsigned, this is a != check--but if we were to change to ints, this would be
+	// the right assert (and it's no worse than != now). 
+	Assert(_resX > 0 && _resY > 0);
+
+	if (_mipmaps == false)
+		return _resX * _resY;
+
+	int retVal = 0;
+	while (_resX > 1 || _resY > 1) 
+	{
+		retVal += _resX * _resY;
+		_resX = max(1, _resX >> 1);
+		_resY = max(1, _resY >> 1);
+	}
+
+	// Add in the 1x1 mipmap level, which wasn't hit above. This could be done in the initializer of 
+	// retVal, but it's more obvious here. 
+	retVal += 1;
+
+	return retVal;
+}
+
+// ------------------------------------------------------------------------------------------------
+static void FilterFineMipmap(unsigned int _resX, unsigned int _resY, const CUtlVector<colorTexel_t>& _srcTexels, CUtlVector<Vector>* _outLinear)
+{
+	Assert(_outLinear);
+	// We can't filter in place, so go ahead and create a linear buffer here.
+	CUtlVector<Vector> filterSrc;
+	filterSrc.EnsureCount(_srcTexels.Count());
+
+	for (int i = 0; i < _srcTexels.Count(); ++i)
+	{
+		ColorRGBExp32 rgbColor;
+		VectorToColorRGBExp32(_srcTexels[i].m_Color, rgbColor);
+		ConvertRGBExp32ToLinear( &rgbColor, &(filterSrc[i]) );
+	}
+
+	const int cRadius = 1;
+	const float cOneOverDiameter = 1.0f / pow(2.0f * cRadius + 1.0f, 2.0f) ;
+	// Filter here.
+	for (int j = 0; j < _resY; ++j) 
+	{
+		for (int i = 0; i < _resX; ++i)
+		{
+			Vector value(0, 0, 0);
+			int thisIndex = ComputeLinearPos(i, j, _resX, _resY);
+
+			if (!_srcTexels[thisIndex].m_bValid)
+			{
+				(*_outLinear)[thisIndex] = filterSrc[thisIndex];
+				continue;
+			}
+
+			// TODO: Check ASM for this, unroll by hand if needed.
+			for ( int offsetJ = -cRadius; offsetJ <= cRadius; ++offsetJ )
+			{
+				for ( int offsetI = -cRadius; offsetI <= cRadius; ++offsetI )
+				{
+					int finalIndex = ComputeLinearPos( i + offsetI, j + offsetJ, _resX, _resY );
+					if ( !_srcTexels[finalIndex].m_bValid )
+					{
+						finalIndex = thisIndex;
+					}
+						
+					value += filterSrc[finalIndex];
+				}
+			}
+
+			(*_outLinear)[thisIndex] = value * cOneOverDiameter;
+		}
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+static void BuildFineMipmap(unsigned int _resX, unsigned int _resY, bool _applyFilter, const CUtlVector<colorTexel_t>& _srcTexels, CUtlVector<RGB888_t>* _outTexelsRGB888, CUtlVector<Vector>* _outLinear)
+{
+	// At least one of these needs to be non-null, otherwise what are we doing here?
+	Assert(_outTexelsRGB888 || _outLinear);
+	Assert(!_applyFilter || _outLinear);
+	Assert(_srcTexels.Count() == GetTexelCount(_resX, _resY, false));
+
+	int texelCount = GetTexelCount(_resX, _resY, true);
+
+	if (_outTexelsRGB888)
+		(*_outTexelsRGB888).EnsureCount(texelCount);
+
+	if (_outLinear)
+		(*_outLinear).EnsureCount(GetTexelCount(_resX, _resY, false));
+
+	// This code can take awhile, so minimize the branchiness of the inner-loop. 
+	if (_applyFilter)
+	{
+
+		FilterFineMipmap(_resX, _resY, _srcTexels, _outLinear);
+
+		if ( _outTexelsRGB888 )
+		{
+			for (int i = 0; i < _srcTexels.Count(); ++i) 
+			{
+				RGBA8888_t encodedColor;
+
+				Vector linearColor = (*_outLinear)[i];
+
+				ConvertLinearToRGBA8888( &linearColor, (unsigned char*)&encodedColor );
+				(*_outTexelsRGB888)[i].r = encodedColor.r;
+				(*_outTexelsRGB888)[i].g = encodedColor.g;
+				(*_outTexelsRGB888)[i].b = encodedColor.b;
+			}
+		}
+	}
+	else
+	{
+		for (int i = 0; i < _srcTexels.Count(); ++i) 
+		{
+			ColorRGBExp32 rgbColor;
+			RGBA8888_t encodedColor;
+			VectorToColorRGBExp32(_srcTexels[i].m_Color, rgbColor);
+			ConvertRGBExp32ToRGBA8888(&rgbColor, (unsigned char*)&encodedColor, (_outLinear ? (&(*_outLinear)[i]) : NULL) );
+			// We drop alpha on the floor here, if this were to fire we'd need to consider using a different compressed format.
+			Assert(encodedColor.a == 0xFF);
+
+			if (_outTexelsRGB888)
+			{
+				(*_outTexelsRGB888)[i].r = encodedColor.r;
+				(*_outTexelsRGB888)[i].g = encodedColor.g;
+				(*_outTexelsRGB888)[i].b = encodedColor.b;
+			}
+		}
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+static void FilterCoarserMipmaps(unsigned int _resX, unsigned int _resY, CUtlVector<Vector>* _scratchLinear, CUtlVector<RGB888_t> *_outTexelsRGB888)
+{
+	Assert(_outTexelsRGB888);
+
+	int srcResX = _resX;
+	int srcResY = _resY;
+	int dstResX = max(1, (srcResX >> 1));
+	int dstResY = max(1, (srcResY >> 1));
+	int dstOffset = GetTexelCount(srcResX, srcResY, false);
+
+	// Build mipmaps here, after being converted to linear space. 
+	// TODO: Should do better filtering for downsampling. But this will work for now.
+	while (srcResX > 1 || srcResY > 1)
+	{
+		for (int j = 0; j < srcResY; j += 2) {
+			for (int i = 0; i < srcResX; i += 2) {
+				int srcCol0 = i;
+				int srcCol1 = i + 1 > srcResX - 1 ? srcResX - 1 : i + 1;
+				int srcRow0 = j;
+				int srcRow1 = j + 1 > srcResY - 1 ? srcResY - 1 : j + 1;;
+
+				int dstCol = i >> 1;
+				int dstRow = j >> 1;
+
+
+				const Vector& tl = (*_scratchLinear)[srcCol0 + (srcRow0 * srcResX)];
+				const Vector& tr = (*_scratchLinear)[srcCol1 + (srcRow0 * srcResX)];
+				const Vector& bl = (*_scratchLinear)[srcCol0 + (srcRow1 * srcResX)];
+				const Vector& br = (*_scratchLinear)[srcCol1 + (srcRow1 * srcResX)];
+
+				Vector sample = (tl + tr + bl + br) / 4.0f;
+
+				ConvertLinearToRGBA8888(&sample, (unsigned char*)&(*_outTexelsRGB888)[dstOffset + dstCol + dstRow * dstResX]);
+
+				// Also overwrite the srcBuffer to filter the next loop. This is safe because we won't be reading this source value
+				// again during this mipmap level.
+				(*_scratchLinear)[dstCol + dstRow * dstResX] = sample;
+			}
+		}
+
+		srcResX = dstResX;
+		srcResY = dstResY;
+		dstResX = max(1, (srcResX >> 1));
+		dstResY = max(1, (srcResY >> 1));
+		dstOffset += GetTexelCount(srcResX, srcResY, false);
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+static void ConvertToDestinationFormat(unsigned int _resX, unsigned int _resY, ImageFormat _destFmt, const CUtlVector<RGB888_t>& _scratchRBG888, CUtlMemory<byte>* _outTexture)
+{
+	const ImageFormat cSrcImageFormat = IMAGE_FORMAT_RGB888;
+
+	// Converts from the scratch RGB888 buffer, which should be fully filled out to the output texture.
+	int destMemoryUsage = ImageLoader::GetMemRequired(_resX, _resY, 1, _destFmt, true);
+	(*_outTexture).EnsureCapacity(destMemoryUsage);
+
+	int srcResX = _resX;
+	int srcResY = _resY;
+	int srcOffset = 0;
+	int dstOffset = 0;
+
+	// The usual case--that they'll be different.
+	if (cSrcImageFormat != _destFmt)
+	{
+		while (srcResX > 1 || srcResY > 1)
+		{
+			// Convert this mipmap level.
+			ImageLoader::ConvertImageFormat((unsigned char*)(&_scratchRBG888[srcOffset]), cSrcImageFormat, (*_outTexture).Base() + dstOffset, _destFmt, srcResX, srcResY);
+
+			// Then update offsets for the next mipmap level.
+			srcOffset += GetTexelCount(srcResX, srcResY, false);
+			dstOffset += ImageLoader::GetMemRequired(srcResX, srcResY, 1, _destFmt, false);
+
+			srcResX = max(1, (srcResX >> 1));
+			srcResY = max(1, (srcResY >> 1));
+		}
+
+		// Do the 1x1 level also.
+		ImageLoader::ConvertImageFormat((unsigned char*)_scratchRBG888.Base() + srcOffset, cSrcImageFormat, (*_outTexture).Base() + dstOffset, _destFmt, srcResX, srcResY);
+	} else {
+		// But sometimes (particularly for debugging) they will be the same.
+		Q_memcpy( (*_outTexture).Base(), _scratchRBG888.Base(), destMemoryUsage );
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+static void ConvertTexelDataToTexture(unsigned int _resX, unsigned int _resY, ImageFormat _destFmt, const CUtlVector<colorTexel_t>& _srcTexels, CUtlMemory<byte>* _outTexture)
+{
+	Assert(_outTexture);
+	Assert(_srcTexels.Count() == _resX * _resY);
+
+	CUtlVector<RGB888_t> scratchRGB888;
+	CUtlVector<Vector> scratchLinear;
+
+	BuildFineMipmap(_resX, _resY, true, _srcTexels, &scratchRGB888, &scratchLinear);
+	FilterCoarserMipmaps(_resX, _resY, &scratchLinear, &scratchRGB888 );
+	ConvertToDestinationFormat(_resX, _resY, _destFmt, scratchRGB888, _outTexture);
+}
+
+// ------------------------------------------------------------------------------------------------
+static void DumpLightmapLinear( const char* _dstFilename, const CUtlVector<colorTexel_t>& _srcTexels, int _width, int _height )
+{
+	CUtlVector< Vector > linearFloats;
+	CUtlVector< BGR888_t > linearBuffer;
+	BuildFineMipmap( _width, _height, true, _srcTexels, NULL, &linearFloats );
+	linearBuffer.SetCount( linearFloats.Count() );
+
+	for ( int i = 0; i < linearFloats.Count(); ++i ) {
+		linearBuffer[i].b = RoundFloatToByte(linearFloats[i].z * 255.0f);
+		linearBuffer[i].g = RoundFloatToByte(linearFloats[i].y * 255.0f);
+		linearBuffer[i].r = RoundFloatToByte(linearFloats[i].x * 255.0f);
+	}
+	
+	TGAWriter::WriteTGAFile( _dstFilename, _width, _height, IMAGE_FORMAT_BGR888, (uint8*)(linearBuffer.Base()), _width * ImageLoader::SizeInBytes(IMAGE_FORMAT_BGR888) );
+}