//-----------------------------------------------------------------------------
// returns light in range from 0 to 1.
// lightmapS/T is in [0,1] within the space of the surface.
// returns surfID
//-----------------------------------------------------------------------------
SurfaceHandle_t R_LightVec (const Vector& start, const Vector& end, bool bUseLightStyles, Vector& c,
float *textureS, float *textureT, float *lightmapS, float *lightmapT )
{
VPROF_INCREMENT_COUNTER( "R_LightVec", 1 );
SurfaceHandle_t retSurfID;
SurfaceHandle_t dispSurfID;
// We're using the vis frame here for lightvec tests
// to make sure we test each displacement only once
++r_surfacevisframe;
LightVecState_t state;
state.m_HitFrac = 1.0f;
state.m_Ray.Init( start, end );
state.m_pTextureS = textureS;
state.m_pTextureT = textureT;
state.m_pLightmapS = lightmapS;
state.m_pLightmapT = lightmapT;
state.m_nSkySurfID = SURFACE_HANDLE_INVALID;
state.m_bUseLightStyles = bUseLightStyles;
c[0] = c[1] = c[2] = 0.0f;
model_t* model = s_pLightVecModel ? s_pLightVecModel : host_state.worldmodel;
retSurfID = RecursiveLightPoint(&model->brush.pShared->nodes[model->brush.firstnode],
0.0f, 1.0f, c, state );
// While doing recursive light point, we built a list of all
// displacement surfaces which we need to test, so let's test them
dispSurfID = R_LightVecDisplacementChain( state, bUseLightStyles, c );
if( r_visualizelighttraces.GetBool() )
{
if( r_visualizelighttracesshowfulltrace.GetBool() )
{
CDebugOverlay::AddLineOverlay( start, end, 0, 255, 0, 255, true, -1.0f );
}
else
{
CDebugOverlay::AddLineOverlay( start, start + ( end - start ) * state.m_HitFrac, 0, 255, 0, 255, true, -1.0f );
}
}
if ( IS_SURF_VALID( dispSurfID ) )
retSurfID = dispSurfID;
// ConMsg( "R_LightVec: %f %f %f\n", c[0], c[1], c[2] );
// If we didn't hit anything else, but we hit a sky surface at
// some point along the ray cast, return the sky id.
if ( ( retSurfID == SURFACE_HANDLE_INVALID ) && ( state.m_nSkySurfID != SURFACE_HANDLE_INVALID ) )
return state.m_nSkySurfID;
return retSurfID;
}
//-----------------------------------------------------------------------------
// returns light in range from 0 to 1.
// lightmapS/T is in [0,1] within the space of the surface.
// returns surfID
//-----------------------------------------------------------------------------
int R_LightVec (const Vector& start, const Vector& end, bool bUseLightStyles, Vector& c,
float *textureS, float *textureT, float *lightmapS, float *lightmapT )
{
int retSurfID;
int dispSurfID;
// We're using the vis frame here for lightvec tests
// to make sure we test each displacement only once
++r_surfacevisframe;
LightVecState_t state;
state.m_HitFrac = 1.0f;
state.m_Ray.Init( start, end );
state.m_pTextureS = textureS;
state.m_pTextureT = textureT;
state.m_pLightmapS = lightmapS;
state.m_pLightmapT = lightmapT;
state.m_nSkySurfID = -1;
state.m_bUseLightStyles = bUseLightStyles;
c[0] = c[1] = c[2] = 0.0f;
model_t* model = s_pLightVecModel ? s_pLightVecModel : host_state.worldmodel;
retSurfID = RecursiveLightPoint(&model->brush.nodes[model->brush.firstnode],
0.0f, 1.0f, c, state );
// While doing recursive light point, we built a list of all
// displacement surfaces which we need to test, so let's test them
dispSurfID = R_LightVecDisplacementChain( state, bUseLightStyles, c );
if ( IS_SURF_VALID( dispSurfID ) )
retSurfID = dispSurfID;
// Con_Printf( "R_LightVec: %f %f %f\n", c[0], c[1], c[2] );
// If we didn't hit anything else, but we hit a sky surface at
// some point along the ray cast, return the sky id.
if ( ( retSurfID == -1 ) && ( state.m_nSkySurfID != -1 ) )
return state.m_nSkySurfID;
return retSurfID;
}
