// returns surfID
static SurfaceHandle_t R_LightVecDisplacementChain( LightVecState_t& state, bool bUseLightStyles, Vector& c )
{
// test the ray against displacements
SurfaceHandle_t surfID = SURFACE_HANDLE_INVALID;
for ( int i = 0; i < state.m_LightTestDisps.Count(); i++ )
{
float dist;
Vector2D luv, tuv;
IDispInfo *pDispInfo = state.m_LightTestDisps[i];
if (pDispInfo->TestRay( state.m_Ray, 0.0f, state.m_HitFrac, dist, &luv, &tuv ))
{
// It hit it, and at a point closer than the previously computed
// nearest intersection point
state.m_HitFrac = dist;
surfID = pDispInfo->GetParent();
ComputeLightmapColor( surfID, (int)luv.x, (int)luv.y, bUseLightStyles, c );
if (state.m_pLightmapS && state.m_pLightmapT)
{
ComputeLightmapCoordsAtIntersection( SurfaceLighting(surfID), (int)luv.x, (int)luv.y, state.m_pLightmapS, state.m_pLightmapT );
}
if (state.m_pTextureS && state.m_pTextureT)
{
*state.m_pTextureS = tuv.x;
*state.m_pTextureT = tuv.y;
}
}
}
return surfID;
}
// returns surfID
static int R_LightVecDisplacementChain( LightVecState_t& state, bool bUseLightStyles, Vector& c )
{
// test the ray against displacements
int surfID = -1;
IDispInfo *pDispInfo = state.m_LightTestChain.GetHead();
for( ; pDispInfo; pDispInfo = pDispInfo->GetNextInRayCastChain() )
{
float dist;
Vector2D luv, tuv;
if (pDispInfo->TestRay( state.m_Ray, 0.0f, state.m_HitFrac, dist, &luv, &tuv ))
{
// It hit it, and at a point closer than the previously computed
// nearest intersection point
state.m_HitFrac = dist;
surfID = pDispInfo->GetParent();
ComputeLightmapColor( surfID, (int)luv.x, (int)luv.y, bUseLightStyles, c );
if (state.m_pLightmapS && state.m_pLightmapT)
{
ComputeLightmapCoordsAtIntersection( SurfaceLighting(surfID), (int)luv.x, (int)luv.y, state.m_pLightmapS, state.m_pLightmapT );
}
if (state.m_pTextureS && state.m_pTextureT)
{
*state.m_pTextureS = tuv.x;
*state.m_pTextureT = tuv.y;
}
}
}
return surfID;
}
