First version of the SOurce SDK 2013

1 files changed, 708 insertions, 0 deletions

diff --git a/mp/src/utils/vrad/leaf_ambient_lighting.cpp b/mp/src/utils/vrad/leaf_ambient_lighting.cpp
new file mode 100644
index 00000000..ea26c8c6
--- /dev/null
+++ b/mp/src/utils/vrad/leaf_ambient_lighting.cpp
@@ -0,0 +1,708 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//

+//

+// Purpose: 

+//

+//=============================================================================//

+

+#include "vrad.h"

+#include "leaf_ambient_lighting.h"

+#include "bsplib.h"

+#include "vraddetailprops.h"

+#include "mathlib/anorms.h"

+#include "pacifier.h"

+#include "coordsize.h"

+#include "vstdlib/random.h"

+#include "bsptreedata.h"

+#include "messbuf.h"

+#include "vmpi.h"

+#include "vmpi_distribute_work.h"

+

+static TableVector g_BoxDirections[6] = 

+{

+	{  1,  0,  0 }, 

+	{ -1,  0,  0 },

+	{  0,  1,  0 }, 

+	{  0, -1,  0 }, 

+	{  0,  0,  1 }, 

+	{  0,  0, -1 }, 

+};

+

+

+

+static void ComputeAmbientFromSurface( dface_t *surfID, dworldlight_t* pSkylight, 

+									   Vector& radcolor )

+{

+	if ( !surfID )

+		return;

+

+	texinfo_t *pTexInfo = &texinfo[surfID->texinfo];

+

+	// If we hit the sky, use the sky ambient

+	if ( pTexInfo->flags & SURF_SKY )

+	{

+		if ( pSkylight )

+		{

+			// add in sky ambient

+			VectorCopy( pSkylight->intensity, radcolor );

+		}

+	}

+	else

+	{

+		Vector reflectivity = dtexdata[pTexInfo->texdata].reflectivity;

+		VectorMultiply( radcolor, reflectivity, radcolor );

+	}

+}

+

+

+// TODO: it's CRAZY how much lighting code we share with the engine. It should all be shared code.

+float Engine_WorldLightAngle( const dworldlight_t *wl, const Vector& lnormal, const Vector& snormal, const Vector& delta )

+{

+	float dot, dot2;

+

+	Assert( wl->type == emit_surface );

+

+	dot = DotProduct( snormal, delta );

+	if (dot < 0)

+		return 0;

+

+	dot2 = -DotProduct (delta, lnormal);

+	if (dot2 <= ON_EPSILON/10)

+		return 0; // behind light surface

+

+	return dot * dot2;

+}

+

+

+// TODO: it's CRAZY how much lighting code we share with the engine. It should all be shared code.

+float Engine_WorldLightDistanceFalloff( const dworldlight_t *wl, const Vector& delta )

+{

+	Assert( wl->type == emit_surface );

+

+	// Cull out stuff that's too far

+	if (wl->radius != 0)

+	{

+		if ( DotProduct( delta, delta ) > (wl->radius * wl->radius))

+			return 0.0f;

+	}

+

+	return InvRSquared(delta);

+}

+

+

+void AddEmitSurfaceLights( const Vector &vStart, Vector lightBoxColor[6] )

+{

+	fltx4 fractionVisible;

+

+	FourVectors vStart4, wlOrigin4;

+	vStart4.DuplicateVector ( vStart );

+

+	for ( int iLight=0; iLight < *pNumworldlights; iLight++ )

+	{

+		dworldlight_t *wl = &dworldlights[iLight];

+

+		// Should this light even go in the ambient cubes?

+		if ( !( wl->flags & DWL_FLAGS_INAMBIENTCUBE ) )

+			continue;

+

+		Assert( wl->type == emit_surface );

+

+		// Can this light see the point?

+		wlOrigin4.DuplicateVector ( wl->origin );

+		TestLine ( vStart4, wlOrigin4, &fractionVisible );

+		if ( !TestSignSIMD ( CmpGtSIMD ( fractionVisible, Four_Zeros ) ) )

+			continue;

+

+		// Add this light's contribution.

+		Vector vDelta = wl->origin - vStart;

+		float flDistanceScale = Engine_WorldLightDistanceFalloff( wl, vDelta );

+

+		Vector vDeltaNorm = vDelta;

+		VectorNormalize( vDeltaNorm );

+		float flAngleScale = Engine_WorldLightAngle( wl, wl->normal, vDeltaNorm, vDeltaNorm );

+

+		float ratio = flDistanceScale * flAngleScale * SubFloat ( fractionVisible, 0 );

+		if ( ratio == 0 )

+			continue;

+

+		for ( int i=0; i < 6; i++ )

+		{

+			float t = DotProduct( g_BoxDirections[i], vDeltaNorm );

+			if ( t > 0 )

+			{

+				lightBoxColor[i] += wl->intensity * (t * ratio);

+			}

+		}

+	}	

+}

+

+

+void ComputeAmbientFromSphericalSamples( int iThread, const Vector &vStart, Vector lightBoxColor[6] )

+{

+	// Figure out the color that rays hit when shot out from this position.

+	Vector radcolor[NUMVERTEXNORMALS];

+	float tanTheta = tan(VERTEXNORMAL_CONE_INNER_ANGLE);

+

+	for ( int i = 0; i < NUMVERTEXNORMALS; i++ )

+	{

+		Vector vEnd = vStart + g_anorms[i] * (COORD_EXTENT * 1.74);

+

+		// Now that we've got a ray, see what surface we've hit

+		Vector lightStyleColors[MAX_LIGHTSTYLES];

+		lightStyleColors[0].Init();	// We only care about light style 0 here.

+		CalcRayAmbientLighting( iThread, vStart, vEnd, tanTheta, lightStyleColors );

+	

+		radcolor[i] = lightStyleColors[0];

+	}

+

+	// accumulate samples into radiant box

+	for ( int j = 6; --j >= 0; )

+	{

+		float t = 0;

+

+		lightBoxColor[j].Init();

+

+		for (int i = 0; i < NUMVERTEXNORMALS; i++)

+		{

+			float c = DotProduct( g_anorms[i], g_BoxDirections[j] );

+			if (c > 0)

+			{

+				t += c;

+				lightBoxColor[j] += radcolor[i] * c;

+			}

+		}

+		

+		lightBoxColor[j] *= 1/t;

+	}

+

+	// Now add direct light from the emit_surface lights. These go in the ambient cube because

+	// there are a ton of them and they are often so dim that they get filtered out by r_worldlightmin.

+	AddEmitSurfaceLights( vStart, lightBoxColor );

+}

+

+

+bool IsLeafAmbientSurfaceLight( dworldlight_t *wl )

+{

+	static const float g_flWorldLightMinEmitSurface = 0.005f;

+	static const float g_flWorldLightMinEmitSurfaceDistanceRatio = ( InvRSquared( Vector( 0, 0, 512 ) ) );

+

+	if ( wl->type != emit_surface )

+		return false;

+

+	if ( wl->style != 0 )

+		return false;

+

+	float intensity = max( wl->intensity[0], wl->intensity[1] );

+	intensity = max( intensity, wl->intensity[2] );

+	

+	return (intensity * g_flWorldLightMinEmitSurfaceDistanceRatio) < g_flWorldLightMinEmitSurface;

+}

+

+

+class CLeafSampler

+{

+public:

+	CLeafSampler( int iThread ) : m_iThread(iThread) {}

+

+	// Generate a random point in the leaf's bounding volume

+	// reject any points that aren't actually in the leaf

+	// do a couple of tracing heuristics to eliminate points that are inside detail brushes 

+	// or underneath displacement surfaces in the leaf

+	// return once we have a valid point, use the center if one can't be computed quickly

+	void GenerateLeafSamplePosition( int leafIndex, const CUtlVector<dplane_t> &leafPlanes, Vector &samplePosition )

+	{

+		dleaf_t *pLeaf = dleafs + leafIndex;

+

+		float dx = pLeaf->maxs[0] - pLeaf->mins[0];

+		float dy = pLeaf->maxs[1] - pLeaf->mins[1];

+		float dz = pLeaf->maxs[2] - pLeaf->mins[2];

+		bool bValid = false;

+		for ( int i = 0; i < 1000 && !bValid; i++ )

+		{

+			samplePosition.x = pLeaf->mins[0] + m_random.RandomFloat(0, dx);

+			samplePosition.y = pLeaf->mins[1] + m_random.RandomFloat(0, dy);

+			samplePosition.z = pLeaf->mins[2] + m_random.RandomFloat(0, dz);

+			bValid = true;

+

+			for ( int j = leafPlanes.Count(); --j >= 0 && bValid; )

+			{

+				float d = DotProduct(leafPlanes[j].normal, samplePosition) - leafPlanes[j].dist;

+				if ( d < DIST_EPSILON )

+				{

+					// not inside the leaf, try again 

+					bValid = false;

+					break;

+				}

+			}

+			if ( !bValid )

+				continue;

+

+			for ( int j = 0; j < 6; j++ )

+			{

+				Vector start = samplePosition;

+				int axis = j%3;

+				start[axis] = (j<3) ? pLeaf->mins[axis] : pLeaf->maxs[axis];

+				float t;

+				Vector normal;

+				CastRayInLeaf( m_iThread, samplePosition, start, leafIndex, &t, &normal );

+				if ( t == 0.0f )

+				{

+					// inside a func_detail, try again.

+					bValid = false;

+					break;

+				}

+				if ( t != 1.0f )

+				{

+					Vector delta = start - samplePosition;

+					if ( DotProduct(delta, normal) > 0 )

+					{

+						// hit backside of displacement, try again.

+						bValid = false;

+						break;

+					}

+				}

+			}

+		}

+		if ( !bValid )

+		{

+			// didn't generate a valid sample point, just use the center of the leaf bbox

+			samplePosition = ( Vector( pLeaf->mins[0], pLeaf->mins[1], pLeaf->mins[2] ) + Vector( pLeaf->maxs[0], pLeaf->maxs[1], pLeaf->maxs[2] ) ) * 0.5f;

+		}

+	}

+

+private:

+	int		m_iThread;

+	CUniformRandomStream m_random;

+};

+

+// gets a list of the planes pointing into a leaf

+void GetLeafBoundaryPlanes( CUtlVector<dplane_t> &list, int leafIndex )

+{

+	list.RemoveAll();

+	int nodeIndex = leafparents[leafIndex];

+	int child = -(leafIndex + 1);

+	while ( nodeIndex >= 0 )

+	{

+		dnode_t *pNode = dnodes + nodeIndex;

+		dplane_t *pNodePlane = dplanes + pNode->planenum;

+		if ( pNode->children[0] == child )

+		{

+			// front side

+			list.AddToTail( *pNodePlane );

+		}

+		else

+		{

+			// back side

+			int plane = list.AddToTail();

+			list[plane].dist = -pNodePlane->dist;

+			list[plane].normal = -pNodePlane->normal;

+			list[plane].type = pNodePlane->type;

+		}

+		child = nodeIndex;

+		nodeIndex = nodeparents[child];

+	}

+}

+

+// this stores each sample of the ambient lighting

+struct ambientsample_t

+{

+	Vector pos;

+	Vector cube[6];

+};

+

+// add the sample to the list.  If we exceed the maximum number of samples, the worst sample will

+// be discarded.  This has the effect of converging on the best samples when enough are added.

+void AddSampleToList( CUtlVector<ambientsample_t> &list, const Vector &samplePosition, Vector *pCube )

+{

+	const int MAX_SAMPLES = 16;

+

+	int index = list.AddToTail();

+	list[index].pos = samplePosition;

+	for ( int i = 0; i < 6; i++ )

+	{

+		list[index].cube[i] = pCube[i];

+	}

+

+	if ( list.Count() <= MAX_SAMPLES )

+		return;

+

+	int nearestNeighborIndex = 0;

+	float nearestNeighborDist = FLT_MAX;

+	float nearestNeighborTotal = 0;

+	for ( int i = 0; i < list.Count(); i++ )

+	{

+		int closestIndex = 0;

+		float closestDist = FLT_MAX;

+		float totalDC = 0;

+		for ( int j = 0; j < list.Count(); j++ )

+		{

+			if ( j == i )

+				continue;

+			float dist = (list[i].pos - list[j].pos).Length();

+			float maxDC = 0;

+			for ( int k = 0; k < 6; k++ )

+			{

+				// color delta is computed per-component, per cube side

+				for (int s = 0; s < 3; s++ )

+				{

+					float dc = fabs(list[i].cube[k][s] - list[j].cube[k][s]);

+					maxDC = max(maxDC,dc);

+				}

+				totalDC += maxDC;

+			}

+			// need a measurable difference in color or we'll just rely on position

+			if ( maxDC < 1e-4f )

+			{

+				maxDC = 0;

+			}

+			else if ( maxDC > 1.0f )

+			{

+				maxDC = 1.0f;

+			}

+			// selection criteria is 10% distance, 90% color difference

+			// choose samples that fill the space (large distance from each other)

+			// and have largest color variation

+			float distanceFactor = 0.1f + (maxDC * 0.9f);

+			dist *= distanceFactor;

+

+			// find the "closest" sample to this one

+			if ( dist < closestDist )

+			{

+				closestDist = dist;

+				closestIndex = j;

+			}

+		}

+		// the sample with the "closest" neighbor is rejected

+		if ( closestDist < nearestNeighborDist || (closestDist == nearestNeighborDist && totalDC < nearestNeighborTotal) )

+		{

+			nearestNeighborDist = closestDist;

+			nearestNeighborIndex = i;

+		}

+	}

+	list.FastRemove( nearestNeighborIndex );

+}

+

+// max number of units in gamma space of per-side delta

+int CubeDeltaGammaSpace( Vector *pCube0, Vector *pCube1 )

+{

+	int maxDelta = 0;

+	// do this comparison in gamma space to try and get a perceptual basis for the compare

+	for ( int i = 0; i < 6; i++ )

+	{

+		for ( int j = 0; j < 3; j++ )

+		{

+			int val0 = LinearToScreenGamma( pCube0[i][j] );

+			int val1 = LinearToScreenGamma( pCube1[i][j] );

+			int delta = abs(val0-val1);

+			if ( delta > maxDelta )

+				maxDelta = delta;

+		}

+	}

+	return maxDelta;

+}

+// reconstruct the ambient lighting for a leaf at the given position in worldspace

+// optionally skip one of the entries in the list

+void Mod_LeafAmbientColorAtPos( Vector *pOut, const Vector &pos, const CUtlVector<ambientsample_t> &list, int skipIndex )

+{

+	for ( int i = 0; i < 6; i++ )

+	{

+		pOut[i].Init();

+	}

+	float totalFactor = 0;

+	for ( int i = 0; i < list.Count(); i++ )

+	{

+		if ( i == skipIndex )

+			continue;

+		// do an inverse squared distance weighted average of the samples to reconstruct 

+		// the original function

+		float dist = (list[i].pos - pos).LengthSqr();

+		float factor = 1.0f / (dist + 1.0f);

+		totalFactor += factor;

+		for ( int j = 0; j < 6; j++ )

+		{

+			pOut[j] += list[i].cube[j] * factor;

+		}

+	}

+	for ( int i = 0; i < 6; i++ )

+	{

+		pOut[i] *= (1.0f / totalFactor);

+	}

+}

+

+// this samples the lighting at each sample and removes any unnecessary samples

+void CompressAmbientSampleList( CUtlVector<ambientsample_t> &list )

+{

+	Vector testCube[6];

+	for ( int i = 0; i < list.Count(); i++ )

+	{

+		if ( list.Count() > 1 )

+		{

+			Mod_LeafAmbientColorAtPos( testCube, list[i].pos, list, i );

+			if ( CubeDeltaGammaSpace(testCube, list[i].cube) < 3 )

+			{

+				list.FastRemove(i);

+				i--;

+			}

+		}

+	}

+}

+

+// basically this is an intersection routine that returns a distance between the boxes

+float AABBDistance( const Vector &mins0, const Vector &maxs0, const Vector &mins1, const Vector &maxs1 )

+{

+	Vector delta;

+	for ( int i = 0; i < 3; i++ )

+	{

+		float greatestMin = max(mins0[i], mins1[i]);

+		float leastMax = min(maxs0[i], maxs1[i]);

+		delta[i] = (greatestMin < leastMax) ? 0 : (leastMax - greatestMin);

+	}

+	return delta.Length();

+}

+

+// build a list of leaves from a query

+class CLeafList : public ISpatialLeafEnumerator

+{

+public:

+	virtual bool EnumerateLeaf( int leaf, int context )

+	{

+		m_list.AddToTail(leaf);

+		return true;

+	}

+

+	CUtlVector<int> m_list;

+};

+

+// conver short[3] to vector

+static void LeafBounds( int leafIndex, Vector &mins, Vector &maxs )

+{

+	for ( int i = 0; i < 3; i++ )

+	{

+		mins[i] = dleafs[leafIndex].mins[i];

+		maxs[i] = dleafs[leafIndex].maxs[i];

+	}

+}

+

+// returns the index of the nearest leaf with ambient samples

+int NearestNeighborWithLight(int leafID)

+{

+	Vector mins, maxs;

+	LeafBounds( leafID, mins, maxs );

+	Vector size = maxs - mins;

+	CLeafList leafList;

+	ToolBSPTree()->EnumerateLeavesInBox( mins-size, maxs+size, &leafList, 0 );

+	float bestDist = FLT_MAX;

+	int bestIndex = leafID;

+	for ( int i = 0; i < leafList.m_list.Count(); i++ )

+	{

+		int testIndex = leafList.m_list[i];

+		if ( !g_pLeafAmbientIndex->Element(testIndex).ambientSampleCount )

+			continue;

+

+		Vector testMins, testMaxs;

+		LeafBounds( testIndex, testMins, testMaxs );

+		float dist = AABBDistance( mins, maxs, testMins, testMaxs );

+		if ( dist < bestDist )

+		{

+			bestDist = dist;

+			bestIndex = testIndex;

+		}

+	}

+	return bestIndex;

+}

+

+// maps a float to a byte fraction between min & max

+static byte Fixed8Fraction( float t, float tMin, float tMax )

+{

+	if ( tMax <= tMin )

+		return 0;

+

+	float frac = RemapValClamped( t, tMin, tMax, 0.0f, 255.0f );

+	return byte(frac+0.5f);

+}

+

+CUtlVector< CUtlVector<ambientsample_t> > g_LeafAmbientSamples;

+

+void ComputeAmbientForLeaf( int iThread, int leafID, CUtlVector<ambientsample_t> &list )

+{

+	CUtlVector<dplane_t> leafPlanes;

+	CLeafSampler sampler( iThread );

+

+	GetLeafBoundaryPlanes( leafPlanes, leafID );

+	list.RemoveAll();

+	// this heuristic tries to generate at least one sample per volume (chosen to be similar to the size of a player) in the space

+	int xSize = (dleafs[leafID].maxs[0] - dleafs[leafID].mins[0]) / 32;

+	int ySize = (dleafs[leafID].maxs[1] - dleafs[leafID].mins[1]) / 32;

+	int zSize = (dleafs[leafID].maxs[2] - dleafs[leafID].mins[2]) / 64;

+	xSize = max(xSize,1);

+	ySize = max(xSize,1);

+	zSize = max(xSize,1);

+	// generate update 128 candidate samples, always at least one sample

+	int volumeCount = xSize * ySize * zSize;

+	if ( g_bFastAmbient )

+	{

+		// save compute time, only do one sample

+		volumeCount = 1;

+	}

+	int sampleCount = clamp( volumeCount, 1, 128 );

+	if ( dleafs[leafID].contents & CONTENTS_SOLID )

+	{

+		// don't generate any samples in solid leaves

+		// NOTE: We copy the nearest non-solid leaf sample pointers into this leaf at the end

+		return;

+	}

+	Vector cube[6];

+	for ( int i = 0; i < sampleCount; i++ )

+	{

+		// compute each candidate sample and add to the list

+		Vector samplePosition;

+		sampler.GenerateLeafSamplePosition( leafID, leafPlanes, samplePosition );

+		ComputeAmbientFromSphericalSamples( iThread, samplePosition, cube );

+		// note this will remove the least valuable sample once the limit is reached

+		AddSampleToList( list, samplePosition, cube );

+	}

+

+	// remove any samples that can be reconstructed with the remaining data

+	CompressAmbientSampleList( list );

+}

+

+static void ThreadComputeLeafAmbient( int iThread, void *pUserData )

+{

+	CUtlVector<ambientsample_t> list;

+	while (1)

+	{

+		int leafID = GetThreadWork ();

+		if (leafID == -1)

+			break;

+		list.RemoveAll();

+		ComputeAmbientForLeaf(iThread, leafID, list);

+		// copy to the output array

+		g_LeafAmbientSamples[leafID].SetCount( list.Count() );

+		for ( int i = 0; i < list.Count(); i++ )

+		{

+			g_LeafAmbientSamples[leafID].Element(i) = list.Element(i);

+		}

+	}

+}

+

+void VMPI_ProcessLeafAmbient( int iThread, uint64 iLeaf, MessageBuffer *pBuf )

+{

+	CUtlVector<ambientsample_t> list;

+	ComputeAmbientForLeaf(iThread, (int)iLeaf, list);

+

+	VMPI_SetCurrentStage( "EncodeLeafAmbientResults" );

+

+	// Encode the results.

+	int nSamples = list.Count();

+	pBuf->write( &nSamples, sizeof( nSamples ) );

+	if ( nSamples )

+	{

+		pBuf->write( list.Base(), list.Count() * sizeof( ambientsample_t ) );

+	}

+}

+

+//-----------------------------------------------------------------------------

+// Called on the master when a worker finishes processing a static prop.

+//-----------------------------------------------------------------------------

+void VMPI_ReceiveLeafAmbientResults( uint64 leafID, MessageBuffer *pBuf, int iWorker )

+{

+	// Decode the results.

+	int nSamples;

+	pBuf->read( &nSamples, sizeof( nSamples ) );

+

+	g_LeafAmbientSamples[leafID].SetCount( nSamples );

+	if ( nSamples )

+	{

+		pBuf->read(g_LeafAmbientSamples[leafID].Base(), nSamples * sizeof(ambientsample_t) );

+	}

+}

+

+

+void ComputePerLeafAmbientLighting()

+{

+	// Figure out which lights should go in the per-leaf ambient cubes.

+	int nInAmbientCube = 0;

+	int nSurfaceLights = 0;

+	for ( int i=0; i < *pNumworldlights; i++ )

+	{

+		dworldlight_t *wl = &dworldlights[i];

+		

+		if ( IsLeafAmbientSurfaceLight( wl ) )

+			wl->flags |= DWL_FLAGS_INAMBIENTCUBE;

+		else

+			wl->flags &= ~DWL_FLAGS_INAMBIENTCUBE;

+	

+		if ( wl->type == emit_surface )

+			++nSurfaceLights;

+

+		if ( wl->flags & DWL_FLAGS_INAMBIENTCUBE )

+			++nInAmbientCube;

+	}

+

+	Msg( "%d of %d (%d%% of) surface lights went in leaf ambient cubes.\n", nInAmbientCube, nSurfaceLights, nSurfaceLights ? ((nInAmbientCube*100) / nSurfaceLights) : 0 );

+

+	g_LeafAmbientSamples.SetCount(numleafs);

+

+	if ( g_bUseMPI )

+	{

+		// Distribute the work among the workers.

+		VMPI_SetCurrentStage( "ComputeLeafAmbientLighting" );

+		DistributeWork( numleafs, VMPI_DISTRIBUTEWORK_PACKETID, VMPI_ProcessLeafAmbient, VMPI_ReceiveLeafAmbientResults );

+	}

+	else

+	{

+		RunThreadsOn(numleafs, true, ThreadComputeLeafAmbient);

+	}

+

+	// now write out the data

+	Msg("Writing leaf ambient...");

+	g_pLeafAmbientIndex->RemoveAll();

+	g_pLeafAmbientLighting->RemoveAll();

+	g_pLeafAmbientIndex->SetCount( numleafs );

+	g_pLeafAmbientLighting->EnsureCapacity( numleafs*4 );

+	for ( int leafID = 0; leafID < numleafs; leafID++ )

+	{

+		const CUtlVector<ambientsample_t> &list = g_LeafAmbientSamples[leafID];

+		g_pLeafAmbientIndex->Element(leafID).ambientSampleCount = list.Count();

+		if ( !list.Count() )

+		{

+			g_pLeafAmbientIndex->Element(leafID).firstAmbientSample = 0;

+		}

+		else

+		{

+			g_pLeafAmbientIndex->Element(leafID).firstAmbientSample = g_pLeafAmbientLighting->Count();

+			// compute the samples in disk format.  Encode the positions in 8-bits using leaf bounds fractions

+			for ( int i = 0; i < list.Count(); i++ )

+			{

+				int outIndex = g_pLeafAmbientLighting->AddToTail();

+				dleafambientlighting_t &light = g_pLeafAmbientLighting->Element(outIndex);

+

+				light.x = Fixed8Fraction( list[i].pos.x, dleafs[leafID].mins[0], dleafs[leafID].maxs[0] );

+				light.y = Fixed8Fraction( list[i].pos.y, dleafs[leafID].mins[1], dleafs[leafID].maxs[1] );

+				light.z = Fixed8Fraction( list[i].pos.z, dleafs[leafID].mins[2], dleafs[leafID].maxs[2] );

+				light.pad = 0;

+				for ( int side = 0; side < 6; side++ )

+				{

+					VectorToColorRGBExp32( list[i].cube[side], light.cube.m_Color[side] );

+				}

+			}

+		}

+	}

+	for ( int i = 0; i < numleafs; i++ )

+	{

+		// UNDONE: Do this dynamically in the engine instead.  This will allow us to sample across leaf

+		// boundaries always which should improve the quality of lighting in general

+		if ( g_pLeafAmbientIndex->Element(i).ambientSampleCount == 0 )

+		{

+			if ( !(dleafs[i].contents & CONTENTS_SOLID) )

+			{

+				Msg("Bad leaf ambient for leaf %d\n", i );

+			}

+

+			int refLeaf = NearestNeighborWithLight(i);

+			g_pLeafAmbientIndex->Element(i).ambientSampleCount = 0;

+			g_pLeafAmbientIndex->Element(i).firstAmbientSample = refLeaf;

+		}

+	}

+	Msg("done\n");

+}

+