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 AddEmitSurfaceLights( const Vector &vStart, Vector lightBoxColor[6] )
{
int iThread = 0;
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?
if ( TestLine( vStart, wl->origin, 0, iThread ) != CONTENTS_EMPTY )
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;
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);
}
}
}
}
