/*
================
R_FindMirrors
Build mirror chains for this frame
================
*/
void R_FindMirrors( const ref_params_t *fd )
{
vec3_t viewOrg, viewAng;
if( !world.has_mirrors || RI.drawOrtho || !RI.drawWorld || RI.refdef.onlyClientDraw || !cl.worldmodel )
return;
RI.refdef = *fd;
// build the transformation matrix for the given view angles
if( cl.thirdperson )
{
vec3_t cam_ofs, vpn;
clgame.dllFuncs.CL_CameraOffset( cam_ofs );
viewAng[PITCH] = cam_ofs[PITCH];
viewAng[YAW] = cam_ofs[YAW];
viewAng[ROLL] = 0;
AngleVectors( viewAng, vpn, NULL, NULL );
VectorMA( RI.refdef.vieworg, -cam_ofs[ROLL], vpn, viewOrg );
}
else
{
VectorCopy( RI.refdef.vieworg, viewOrg );
VectorCopy( RI.refdef.viewangles, viewAng );
}
// build the transformation matrix for the given view angles
VectorCopy( viewOrg, RI.vieworg );
AngleVectors( viewAng, RI.vforward, RI.vright, RI.vup );
VectorCopy( RI.vieworg, RI.pvsorigin );
if( !r_lockcull->integer )
{
VectorCopy( RI.vieworg, RI.cullorigin );
VectorCopy( RI.vforward, RI.cull_vforward );
VectorCopy( RI.vright, RI.cull_vright );
VectorCopy( RI.vup, RI.cull_vup );
}
R_FindViewLeaf();
R_SetupFrustum();
R_MarkLeaves ();
VectorCopy( RI.cullorigin, tr.modelorg );
RI.currententity = clgame.entities;
RI.currentmodel = RI.currententity->model;
R_RecursiveMirrorNode( cl.worldmodel->nodes, RI.clipFlags );
R_CheckEntitiesOnList();
}
/*
================
R_FindMirrors
Build mirror chains for this frame
================
*/
void R_FindMirrors( const ref_params_t *fd )
{
if( !world.has_mirrors || RI.drawOrtho || !RI.drawWorld || RI.refdef.onlyClientDraw || !cl.worldmodel )
return;
RI.refdef = *fd;
// build the transformation matrix for the given view angles
VectorCopy( RI.refdef.vieworg, RI.vieworg );
AngleVectors( RI.refdef.viewangles, RI.vforward, RI.vright, RI.vup );
R_FindViewLeaf();
R_SetupFrustum();
R_MarkLeaves ();
VectorCopy( RI.cullorigin, tr.modelorg );
RI.currententity = clgame.entities;
RI.currentmodel = RI.currententity->model;
R_RecursiveMirrorNode( cl.worldmodel->nodes, RI.clipFlags );
R_CheckEntitiesOnList();
}
/*
================
R_RecursiveMirrorNode
================
*/
void R_RecursiveMirrorNode( mnode_t *node, uint clipflags )
{
mextrasurf_t *extrasurf;
const mplane_t *clipplane;
int i, clipped;
msurface_t *surf, **mark;
mleaf_t *pleaf;
int c, side;
float dot;
if( node->contents == CONTENTS_SOLID )
return; // hit a solid leaf
if( node->visframe != tr.visframecount )
return;
if( clipflags )
{
for( i = 0, clipplane = RI.frustum; i < 6; i++, clipplane++ )
{
if(!( clipflags & ( 1<<i )))
continue;
clipped = BoxOnPlaneSide( node->minmaxs, node->minmaxs + 3, clipplane );
if( clipped == 2 ) return;
if( clipped == 1 ) clipflags &= ~(1<<i);
}
}
// if a leaf node, draw stuff
if( node->contents < 0 )
{
pleaf = (mleaf_t *)node;
mark = pleaf->firstmarksurface;
c = pleaf->nummarksurfaces;
if( c )
{
do
{
(*mark)->visframe = tr.framecount;
mark++;
} while( --c );
}
return;
}
// node is just a decision point, so go down the apropriate sides
// find which side of the node we are on
dot = PlaneDiff( tr.modelorg, node->plane );
side = (dot >= 0) ? 0 : 1;
// recurse down the children, front side first
R_RecursiveMirrorNode( node->children[side], clipflags );
// draw stuff
for( c = node->numsurfaces, surf = cl.worldmodel->surfaces + node->firstsurface; c; c--, surf++ )
{
if(!( surf->flags & SURF_REFLECT ))
continue;
if( R_CullSurface( surf, clipflags ))
continue;
extrasurf = SURF_INFO( surf, RI.currentmodel );
extrasurf->mirrorchain = tr.mirror_entities[0].chain;
tr.mirror_entities[0].chain = extrasurf;
}
// recurse down the back side
R_RecursiveMirrorNode( node->children[!side], clipflags );
}
