/*
================
R_DrawSubmodelPolygons
All in one leaf
================
*/
void R_DrawSubmodelPolygons(mmodel_t *pmodel, int clipflags, mnode_t *topnode)
{
int i;
vec_t dot;
mface_t *psurf;
int numsurfaces;
cplane_t *pplane;
// FIXME: use bounding-box-based frustum clipping info?
psurf = pmodel->firstface;
numsurfaces = pmodel->numfaces;
for (i = 0; i < numsurfaces; i++, psurf++) {
// find which side of the node we are on
pplane = psurf->plane;
dot = PlaneDiff(modelorg, pplane);
// draw the polygon
if (((psurf->drawflags & DSURF_PLANEBACK) && (dot < -BACKFACE_EPSILON)) ||
(!(psurf->drawflags & DSURF_PLANEBACK) && (dot > BACKFACE_EPSILON))) {
r_currentkey = ((mleaf_t *)topnode)->key;
// FIXME: use bounding-box-based frustum clipping info?
R_RenderFace(psurf, clipflags);
}
}
}
void R_DrawSubmodelPolygonsFPM (model_FPM_t *pmodel, int clipflags)
{
int i;
fixedpoint_t dot;
msurface_FPM_t *psurf;
int numsurfaces;
mplane_FPM_t *pplane;
// FIXME: use bounding-box-based frustum clipping info?
psurf = &pmodel->surfaces[pmodel->firstmodelsurface];
numsurfaces = pmodel->nummodelsurfaces;
for (i=0 ; i<numsurfaces ; i++, psurf++)
{
// find which side of the node we are on
pplane = psurf->plane;
dot = FPM_SUB(DotProductFPM (modelorgFPM, pplane->normal), pplane->dist);
// draw the polygon
if (((psurf->flags & SURF_PLANEBACK) && (dot < -BACKFACE_EPSILON)) ||
(!(psurf->flags & SURF_PLANEBACK) && (dot > BACKFACE_EPSILON)))
{
r_currentkey = ((mleaf_FPM_t *)currententityFPM->topnode)->key;
// FIXME: use bounding-box-based frustum clipping info?
// R_RenderFaceFPM (psurf, clipflags); // FPM doesn't exist
R_RenderFace (psurf, clipflags);
}
}
}
/*
================
R_DrawSubmodelPolygons
================
*/
void
R_DrawSubmodelPolygons(const entity_t *e, model_t *pmodel, int clipflags)
{
int i;
msurface_t *psurf;
int numsurfaces;
// FIXME: use bounding-box-based frustum clipping info?
psurf = &pmodel->surfaces[pmodel->firstmodelsurface];
numsurfaces = pmodel->nummodelsurfaces;
for (i = 0; i < numsurfaces; i++, psurf++) {
if (psurf->clipflags == BMODEL_FULLY_CLIPPED)
continue;
r_currentkey = ((mleaf_t *)e->topnode)->key;
R_RenderFace(e, psurf, clipflags);
}
}
/*
================
R_EmitSkyBox
================
*/
qboolean R_EmitSkyBox (void)
{
int i, j;
int oldkey;
if (insubmodel)
return false;
if (r_skyframe == r_framecount)
return true;
if (!*skyname)
return false;
r_skyframe = r_framecount;
for (i=0 ; i<8 ; i++)
for (j=0 ; j<3 ; j++)
r_skyverts[i].position[j] = r_origin[j] + box_verts[i][j]*128;
for (i=0 ; i<6 ; i++)
if (skybox_planes[i*2+1] > 0)
r_skyplanes[i].dist = r_origin[skybox_planes[i*2]]+128;
else
r_skyplanes[i].dist = r_origin[skybox_planes[i*2]]-128;
for (i=0 ; i<6 ; i++)
{
r_skytexinfo[i].vecs[0][3] = -DotProduct (r_origin, r_skytexinfo[i].vecs[0]);
r_skytexinfo[i].vecs[1][3] = -DotProduct (r_origin, r_skytexinfo[i].vecs[1]);
}
oldkey = r_currentkey;
r_currentkey = 0x7ffffff0;
for (i=0 ; i<6 ; i++)
{
R_RenderFace (r_skyfaces + i, 15);
}
r_currentkey = oldkey;
return true;
}
/*
================
R_EmitSkyBox
================
*/
void R_EmitSkyBox (void)
{
int i, j;
int oldkey;
if (insubmodel)
return; // submodels should never have skies
if (r_skyframe == r_framecount)
return; // already set this frame
r_skyframe = r_framecount;
// set the eight fake vertexes
for (i=0 ; i<8 ; i++)
for (j=0 ; j<3 ; j++)
r_skyverts[i].position[j] = r_origin[j] + box_verts[i][j]*128;
// set the six fake planes
for (i=0 ; i<6 ; i++)
if (skybox_planes[i*2+1] > 0)
r_skyplanes[i].dist = r_origin[skybox_planes[i*2]]+128;
else
r_skyplanes[i].dist = r_origin[skybox_planes[i*2]]-128;
// fix texture offseets
for (i=0 ; i<6 ; i++)
{
r_skytexinfo[i].vecs[0][3] = -DotProduct (r_origin, r_skytexinfo[i].vecs[0]);
r_skytexinfo[i].vecs[1][3] = -DotProduct (r_origin, r_skytexinfo[i].vecs[1]);
}
// emit the six faces
oldkey = r_currentkey;
r_currentkey = 0x7ffffff0;
for (i=0 ; i<6 ; i++)
{
R_RenderFace (r_skyfaces + i, 15);
}
r_currentkey = oldkey; // bsp sorting order
}
/*
================
R_RecursiveWorldNode
================
*/
static void R_RecursiveWorldNode(mnode_t *node, int clipflags)
{
int i, c, side, *pindex;
vec3_t acceptpt, rejectpt;
cplane_t *plane;
mface_t *surf, **mark;
float d, dot;
mleaf_t *pleaf;
while (node->visframe == r_visframecount) {
// cull the clipping planes if not trivial accept
// FIXME: the compiler is doing a lousy job of optimizing here; it could be
// twice as fast in ASM
if (clipflags) {
for (i = 0; i < 4; i++) {
if (!(clipflags & (1 << i)))
continue; // don't need to clip against it
// generate accept and reject points
// FIXME: do with fast look-ups or integer tests based on the sign bit
// of the floating point values
pindex = pfrustum_indexes[i];
rejectpt[0] = (float)node->minmaxs[pindex[0]];
rejectpt[1] = (float)node->minmaxs[pindex[1]];
rejectpt[2] = (float)node->minmaxs[pindex[2]];
d = PlaneDiff(rejectpt, &view_clipplanes[i]);
if (d <= 0)
return;
acceptpt[0] = (float)node->minmaxs[pindex[3 + 0]];
acceptpt[1] = (float)node->minmaxs[pindex[3 + 1]];
acceptpt[2] = (float)node->minmaxs[pindex[3 + 2]];
d = PlaneDiff(acceptpt, &view_clipplanes[i]);
if (d >= 0)
clipflags &= ~(1 << i); // node is entirely on screen
}
}
c_drawnode++;
// if a leaf node, draw stuff
if (!node->plane) {
pleaf = (mleaf_t *)node;
if (pleaf->contents == CONTENTS_SOLID)
return; // solid
// check for door connected areas
if (r_newrefdef.areabits) {
if (! Q_IsBitSet(r_newrefdef.areabits, pleaf->area))
return; // not visible
}
mark = pleaf->firstleafface;
c = pleaf->numleaffaces;
if (c) {
do {
(*mark)->drawframe = r_framecount;
mark++;
} while (--c);
}
pleaf->key = r_currentkey;
r_currentkey++; // all bmodels in a leaf share the same key
return;
}
// node is just a decision point, so go down the apropriate sides
// find which side of the node we are on
plane = node->plane;
dot = PlaneDiffFast(modelorg, plane);
if (dot >= 0)
side = 0;
else
side = 1;
// recurse down the children, front side first
R_RecursiveWorldNode(node->children[side], clipflags);
// draw stuff
c = node->numfaces;
if (c) {
surf = node->firstface;
if (dot < -BACKFACE_EPSILON) {
do {
if ((surf->drawflags & DSURF_PLANEBACK) &&
(surf->drawframe == r_framecount)) {
R_RenderFace(surf, clipflags);
}
surf++;
} while (--c);
} else if (dot > BACKFACE_EPSILON) {
do {
if (!(surf->drawflags & DSURF_PLANEBACK) &&
(surf->drawframe == r_framecount)) {
R_RenderFace(surf, clipflags);
}
surf++;
} while (--c);
}
// all surfaces on the same node share the same sequence number
r_currentkey++;
}
// recurse down the back side
node = node->children[side ^ 1];
}
}
/*
================
R_RecursiveWorldNode
================
*/
void R_RecursiveWorldNode (mnode_t *node, int clipflags)
{
int i, c, side, *pindex;
mplane_t *plane;
msurface_t *surf, **mark;
mleaf_t *pleaf;
double dot;
#ifdef USE_PQ_OPT1
int d_fxp;
#else
double d;
vec3_t acceptpt, rejectpt;
#endif
if (node->contents == CONTENTS_SOLID)
return; // solid
if (node->visframe != r_visframecount)
return;
// cull the clipping planes if not trivial accept
// FIXME: the compiler is doing a lousy job of optimizing here; it could be
// twice as fast in ASM
if (clipflags)
{
for (i=0 ; i<4 ; i++)
{
if (! (clipflags & (1<<i)) )
continue; // don't need to clip against it
// generate accept and reject points
// FIXME: do with fast look-ups or integer tests based on the sign bit
// of the floating point values
pindex = pfrustum_indexes[i];
#ifdef USE_PQ_OPT1
d_fxp=node->minmaxs[pindex[0]]*clipplanes_fxp[i][0]+node->minmaxs[pindex[1]]*clipplanes_fxp[i][1]+node->minmaxs[pindex[2]]*clipplanes_fxp[i][2];
d_fxp-=clipdist_fxp[i];
if (d_fxp <= 0)
return;
d_fxp=node->minmaxs[pindex[3]]*clipplanes_fxp[i][0]+node->minmaxs[pindex[4]]*clipplanes_fxp[i][1]+node->minmaxs[pindex[5]]*clipplanes_fxp[i][2];
d_fxp-=clipdist_fxp[i];
if (d_fxp >= 0)
clipflags &= ~(1<<i); // node is entirely on screen
#else
rejectpt[0] = (float)node->minmaxs[pindex[0]];
rejectpt[1] = (float)node->minmaxs[pindex[1]];
rejectpt[2] = (float)node->minmaxs[pindex[2]];
d = DotProduct (rejectpt, view_clipplanes[i].normal);
d -= view_clipplanes[i].dist;
if (d <= 0)
return;
acceptpt[0] = (float)node->minmaxs[pindex[3+0]];
acceptpt[1] = (float)node->minmaxs[pindex[3+1]];
acceptpt[2] = (float)node->minmaxs[pindex[3+2]];
d = DotProduct (acceptpt, view_clipplanes[i].normal);
d -= view_clipplanes[i].dist;
if (d >= 0)
clipflags &= ~(1<<i); // node is entirely on screen
#endif
}
}
// 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 = r_framecount;
mark++;
} while (--c);
}
// deal with model fragments in this leaf
if (pleaf->efrags)
{
R_StoreEfrags (&pleaf->efrags);
}
pleaf->key = r_currentkey;
r_currentkey++; // all bmodels in a leaf share the same key
}
else
{
// node is just a decision point, so go down the apropriate sides
// find which side of the node we are on
plane = node->plane;
switch (plane->type)
{
case PLANE_X:
dot = modelorg[0] - plane->dist;
break;
case PLANE_Y:
dot = modelorg[1] - plane->dist;
break;
case PLANE_Z:
dot = modelorg[2] - plane->dist;
break;
default:
dot = DotProduct (modelorg, plane->normal) - plane->dist;
break;
}
if (dot >= 0)
side = 0;
else
side = 1;
// recurse down the children, front side first
R_RecursiveWorldNode (node->children[side], clipflags);
// draw stuff
c = node->numsurfaces;
if (c)
{
surf = cl.worldmodel->surfaces + node->firstsurface;
if (dot < -BACKFACE_EPSILON)
{
do
{
if ((surf->flags & SURF_PLANEBACK) &&
(surf->visframe == r_framecount))
{
if (r_drawpolys)
{
if (r_worldpolysbacktofront)
{
if (numbtofpolys < MAX_BTOFPOLYS)
{
pbtofpolys[numbtofpolys].clipflags =
clipflags;
pbtofpolys[numbtofpolys].psurf = surf;
numbtofpolys++;
}
}
else
{
R_RenderPoly (surf, clipflags);
}
}
else
{
R_RenderFace (surf, clipflags);
}
}
surf++;
} while (--c);
}
else if (dot > BACKFACE_EPSILON)
{
do
{
if (!(surf->flags & SURF_PLANEBACK) &&
(surf->visframe == r_framecount))
{
if (r_drawpolys)
{
if (r_worldpolysbacktofront)
{
if (numbtofpolys < MAX_BTOFPOLYS)
{
pbtofpolys[numbtofpolys].clipflags =
clipflags;
pbtofpolys[numbtofpolys].psurf = surf;
numbtofpolys++;
}
}
else
{
R_RenderPoly (surf, clipflags);
}
}
else
{
R_RenderFace (surf, clipflags);
}
}
surf++;
} while (--c);
}
// all surfaces on the same node share the same sequence number
r_currentkey++;
}
// recurse down the back side
R_RecursiveWorldNode (node->children[!side], clipflags);
}
}
/*
================
R_RecursiveWorldNode
================
*/
static void
R_RecursiveWorldNode(const entity_t *e, mnode_t *node)
{
int count, side;
mplane_t *plane;
msurface_t *surf;
mleaf_t *pleaf;
vec_t dot;
if (node->contents == CONTENTS_SOLID)
return;
if (node->visframe != r_visframecount)
return;
if (node->clipflags == BMODEL_FULLY_CLIPPED)
return;
/* if a leaf node, draw stuff */
if (node->contents < 0) {
pleaf = (mleaf_t *)node;
pleaf->key = r_currentkey;
r_currentkey++; // all bmodels in a leaf share the same key
return;
}
/*
* The node is a decision point, so go down the apropriate sides.
* Find which side of the node we are on.
*/
plane = node->plane;
switch (plane->type) {
case PLANE_X:
dot = modelorg[0] - plane->dist;
break;
case PLANE_Y:
dot = modelorg[1] - plane->dist;
break;
case PLANE_Z:
dot = modelorg[2] - plane->dist;
break;
default:
dot = DotProduct(modelorg, plane->normal) - plane->dist;
break;
}
side = (dot >= 0) ? 0 : 1;
/* recurse down the children, front side first */
R_RecursiveWorldNode(e, node->children[side]);
/* draw stuff */
count = node->numsurfaces;
if (count) {
surf = cl.worldmodel->surfaces + node->firstsurface;
for (count = node->numsurfaces; count; count--, surf++) {
if (surf->visframe != r_visframecount)
continue;
if (surf->clipflags == BMODEL_FULLY_CLIPPED)
continue;
R_RenderFace(e, surf, surf->clipflags);
}
/* all surfaces on the same node share the same sequence number */
r_currentkey++;
}
/* recurse down the back side */
R_RecursiveWorldNode(e, node->children[!side]);
}
void R_RecursiveWorldNode (mnode_t *node, int clipflags) {
int i, c, side, *pindex;
vec3_t acceptpt, rejectpt;
mplane_t *plane;
msurface_t *surf, **mark;
mleaf_t *pleaf;
double d, dot;
if (node->contents == CONTENTS_SOLID)
return; // solid
if (node->visframe != r_visframecount)
return;
// cull the clipping planes if not trivial accept
// FIXME: the compiler is doing a lousy job of optimizing here; it could be twice as fast in ASM
if (clipflags) {
for (i = 0; i < 4; i++) {
if (!(clipflags & (1<<i)) )
continue; // don't need to clip against it
// generate accept and reject points
// FIXME: do with fast look-ups or integer tests based on the sign bit of the floating point values
pindex = pfrustum_indexes[i];
rejectpt[0] = (float)node->minmaxs[pindex[0]];
rejectpt[1] = (float)node->minmaxs[pindex[1]];
rejectpt[2] = (float)node->minmaxs[pindex[2]];
d = DotProduct (rejectpt, view_clipplanes[i].normal);
d -= view_clipplanes[i].dist;
if (d <= 0)
return;
acceptpt[0] = (float)node->minmaxs[pindex[3+0]];
acceptpt[1] = (float)node->minmaxs[pindex[3+1]];
acceptpt[2] = (float)node->minmaxs[pindex[3+2]];
d = DotProduct (acceptpt, view_clipplanes[i].normal);
d -= view_clipplanes[i].dist;
if (d >= 0)
clipflags &= ~(1<<i); // node is entirely on screen
}
}
// 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 = r_framecount;
mark++;
} while (--c);
}
// deal with model fragments in this leaf
if (pleaf->efrags)
R_StoreEfrags (&pleaf->efrags);
pleaf->key = r_currentkey;
r_currentkey++; // all bmodels in a leaf share the same key
} else {
// node is just a decision point, so go down the apropriate sides
// find which side of the node we are on
plane = node->plane;
dot = PlaneDiff (modelorg, plane);
side = (dot < 0);
// recurse down the children, front side first
R_RecursiveWorldNode (node->children[side], clipflags);
// draw stuff
c = node->numsurfaces;
if (c) {
surf = cl.worldmodel->surfaces + node->firstsurface;
if (dot < -BACKFACE_EPSILON) {
do {
if ((surf->flags & SURF_PLANEBACK) && surf->visframe == r_framecount)
R_RenderFace (surf, clipflags);
surf++;
} while (--c);
} else if (dot > BACKFACE_EPSILON) {
do
{
if (!(surf->flags & SURF_PLANEBACK) && surf->visframe == r_framecount)
R_RenderFace (surf, clipflags);
surf++;
} while (--c);
}
// all surfaces on the same node share the same sequence number
r_currentkey++;
}
// recurse down the back side
R_RecursiveWorldNode (node->children[!side], clipflags);
}
}
