ref_soft: submodel drawing

r_bsp.c

@@ -143,7 +143,7 @@ void R_RotateBmodel (void)
 
 	R_TransformFrustum ();
 }
-
+#if 1
 
 /*
 ================
@@ -316,7 +316,297 @@ void R_RecursiveClipBPoly (bedge_t *pedges, mnode_t *pnode, msurface_t *psurf)
 	}
 
 }
+#else
+/*
+================
+R_RecursiveClipBPoly
+================
+*/
+void R_RecursiveClipBPoly (bedge_t *pedges, mnode_t *pnode, msurface_t *psurf)
+{
+	bedge_t		*psideedges[2], *pnextedge, *ptedge;
+	int			i, side, lastside;
+	float		dist, frac, lastdist;
+	mplane_t	*splitplane, tplane;
+	mvertex_t	*pvert, *plastvert, *ptvert;
+	mnode_t		*pn;
+
+	psideedges[0] = psideedges[1] = NULL;
+
+	makeclippededge = false;
+
+// transform the BSP plane into model space
+// FIXME: cache these?
+	splitplane = pnode->plane;
+	tplane.dist = splitplane->dist -
+			DotProduct(r_entorigin, splitplane->normal);
+	tplane.normal[0] = DotProduct (entity_rotation[0], splitplane->normal);
+	tplane.normal[1] = DotProduct (entity_rotation[1], splitplane->normal);
+	tplane.normal[2] = DotProduct (entity_rotation[2], splitplane->normal);
+
+// clip edges to BSP plane
+	for ( ; pedges ; pedges = pnextedge)
+	{
+		pnextedge = pedges->pnext;
+
+	// set the status for the last point as the previous point
+	// FIXME: cache this stuff somehow?
+		plastvert = pedges->v[0];
+		lastdist = DotProduct (plastvert->position, tplane.normal) -
+				   tplane.dist;
+
+		if (lastdist > 0)
+			lastside = 0;
+		else
+			lastside = 1;
+
+		pvert = pedges->v[1];
+
+		dist = DotProduct (pvert->position, tplane.normal) - tplane.dist;
+
+		if (dist > 0)
+			side = 0;
+		else
+			side = 1;
+
+		if (side != lastside)
+		{
+		// clipped
+			if (numbverts >= MAX_BMODEL_VERTS)
+				return;
+
+		// generate the clipped vertex
+			frac = lastdist / (lastdist - dist);
+			ptvert = &pbverts[numbverts++];
+			ptvert->position[0] = plastvert->position[0] +
+					frac * (pvert->position[0] -
+					plastvert->position[0]);
+			ptvert->position[1] = plastvert->position[1] +
+					frac * (pvert->position[1] -
+					plastvert->position[1]);
+			ptvert->position[2] = plastvert->position[2] +
+					frac * (pvert->position[2] -
+					plastvert->position[2]);
 
+		// split into two edges, one on each side, and remember entering
+		// and exiting points
+		// FIXME: share the clip edge by having a winding direction flag?
+			if (numbedges >= (MAX_BMODEL_EDGES - 1))
+			{
+				gEngfuncs.Con_Printf ("Out of edges for bmodel\n");
+				return;
+			}
+
+			ptedge = &pbedges[numbedges];
+			ptedge->pnext = psideedges[lastside];
+			psideedges[lastside] = ptedge;
+			ptedge->v[0] = plastvert;
+			ptedge->v[1] = ptvert;
+
+			ptedge = &pbedges[numbedges + 1];
+			ptedge->pnext = psideedges[side];
+			psideedges[side] = ptedge;
+			ptedge->v[0] = ptvert;
+			ptedge->v[1] = pvert;
+
+			numbedges += 2;
+
+			if (side == 0)
+			{
+			// entering for front, exiting for back
+				pfrontenter = ptvert;
+				makeclippededge = true;
+			}
+			else
+			{
+				pfrontexit = ptvert;
+				makeclippededge = true;
+			}
+		}
+		else
+		{
+		// add the edge to the appropriate side
+			pedges->pnext = psideedges[side];
+			psideedges[side] = pedges;
+		}
+	}
+
+// if anything was clipped, reconstitute and add the edges along the clip
+// plane to both sides (but in opposite directions)
+	if (makeclippededge)
+	{
+		if (numbedges >= (MAX_BMODEL_EDGES - 2))
+		{
+			gEngfuncs.Con_Printf ("Out of edges for bmodel\n");
+			return;
+		}
+
+		ptedge = &pbedges[numbedges];
+		ptedge->pnext = psideedges[0];
+		psideedges[0] = ptedge;
+		ptedge->v[0] = pfrontexit;
+		ptedge->v[1] = pfrontenter;
+
+		ptedge = &pbedges[numbedges + 1];
+		ptedge->pnext = psideedges[1];
+		psideedges[1] = ptedge;
+		ptedge->v[0] = pfrontenter;
+		ptedge->v[1] = pfrontexit;
+
+		numbedges += 2;
+	}
+
+// draw or recurse further
+	for (i=0 ; i<2 ; i++)
+	{
+		if (psideedges[i])
+		{
+		// draw if we've reached a non-solid leaf, done if all that's left is a
+		// solid leaf, and continue down the tree if it's not a leaf
+			pn = pnode->children[i];
+
+		// we're done with this branch if the node or leaf isn't in the PVS
+			if (pn->visframe == r_visframecount)
+			{
+				if (pn->contents < 0)
+				{
+					if (pn->contents != CONTENTS_SOLID)
+					{
+						r_currentbkey = ((mleaf_t *)pn)->cluster;
+						R_RenderBmodelFace (psideedges[i], psurf);
+					}
+				}
+				else
+				{
+					R_RecursiveClipBPoly (psideedges[i], pnode->children[i],
+									  psurf);
+				}
+			}
+		}
+	}
+}
+#endif
+#if 0
+/*
+================
+R_DrawSolidClippedSubmodelPolygons
+================
+*/
+void R_DrawSolidClippedSubmodelPolygons (model_t *pmodel)
+{
+	int			i, j, lindex;
+	vec_t		dot;
+	msurface_t	*psurf;
+	int			numsurfaces;
+	mplane_t	*pplane;
+	mvertex_t	bverts[MAX_BMODEL_VERTS];
+	bedge_t		bedges[MAX_BMODEL_EDGES], *pbedge;
+	medge_t		*pedge, *pedges;
+
+// FIXME: use bounding-box-based frustum clipping info?
+
+	psurf = &pmodel->surfaces[pmodel->firstmodelsurface];
+	numsurfaces = pmodel->nummodelsurfaces;
+	pedges = pmodel->edges;
+
+	for (i=0 ; i<numsurfaces ; i++, psurf++)
+	{
+	// find which side of the node we are on
+		pplane = psurf->plane;
+
+		dot = DotProduct (modelorg, pplane->normal) - pplane->dist;
+
+	// draw the polygon
+		if (((psurf->flags & SURF_PLANEBACK) && (dot < -BACKFACE_EPSILON)) ||
+			(!(psurf->flags & SURF_PLANEBACK) && (dot > BACKFACE_EPSILON)))
+		{
+		// FIXME: use bounding-box-based frustum clipping info?
+
+		// copy the edges to bedges, flipping if necessary so always
+		// clockwise winding
+		// FIXME: if edges and vertices get caches, these assignments must move
+		// outside the loop, and overflow checking must be done here
+			pbverts = bverts;
+			pbedges = bedges;
+			numbverts = numbedges = 0;
+
+			if (psurf->numedges > 0)
+			{
+				pbedge = &bedges[numbedges];
+				numbedges += psurf->numedges;
+
+				for (j=0 ; j<psurf->numedges ; j++)
+				{
+				   lindex = pmodel->surfedges[psurf->firstedge+j];
+
+					if (lindex > 0)
+					{
+						pedge = &pedges[lindex];
+						pbedge[j].v[0] = &r_pcurrentvertbase[pedge->v[0]];
+						pbedge[j].v[1] = &r_pcurrentvertbase[pedge->v[1]];
+					}
+					else
+					{
+						lindex = -lindex;
+						pedge = &pedges[lindex];
+						pbedge[j].v[0] = &r_pcurrentvertbase[pedge->v[1]];
+						pbedge[j].v[1] = &r_pcurrentvertbase[pedge->v[0]];
+					}
+
+					pbedge[j].pnext = &pbedge[j+1];
+				}
+
+				pbedge[j-1].pnext = NULL;	// mark end of edges
+
+				R_RecursiveClipBPoly (pbedge, RI.currententity->topnode, psurf);
+			}
+			else
+			{
+				gEngfuncs.Host_Error ("no edges in bmodel");
+			}
+		}
+	}
+}
+
+
+/*
+================
+R_DrawSubmodelPolygons
+================
+*/
+void R_DrawSubmodelPolygons (model_t *pmodel, int clipflags)
+{
+	int			i;
+	vec_t		dot;
+	msurface_t	*psurf;
+	int			numsurfaces;
+	mplane_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 = DotProduct (modelorg, 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_t *)RI.currententity->topnode)->cluster;
+
+		// FIXME: use bounding-box-based frustum clipping info?
+			R_RenderFace (psurf, clipflags);
+		}
+	}
+}
+
+#else
 
 /*
 ================
@@ -436,6 +726,8 @@ void R_DrawSubmodelPolygons (model_t *pmodel, int clipflags, mnode_t *topnode)
 	}
 }
 
+#endif
+
 
 int c_drawnode;
 

r_local.h

@@ -1235,6 +1235,9 @@ extern mvertex_t        *r_pcurrentvertbase;
 extern int                      r_maxvalidedgeoffset;
 extern int              r_currentkey;
 extern int              r_currentbkey;
+extern qboolean insubmodel;
+
+extern  vec3_t  r_entorigin;
 
 //
 // r_blitscreen.c

r_main.c

@@ -1097,7 +1097,156 @@ void R_DrawEntitiesOnList( void )
 	//GL_CheckForErrors();
 }
 
-#if 0
+#if 1
+qboolean insubmodel;
+
+
+/*
+=============
+R_BmodelCheckBBox
+=============
+*/
+int R_BmodelCheckBBox (float *minmaxs)
+{
+	int			i, *pindex, clipflags;
+	vec3_t		acceptpt, rejectpt;
+	float		d;
+
+	clipflags = 0;
+
+	for (i=0 ; i<4 ; i++)
+	{
+	// 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] = minmaxs[pindex[0]];
+		rejectpt[1] = minmaxs[pindex[1]];
+		rejectpt[2] = minmaxs[pindex[2]];
+
+		d = DotProduct (rejectpt, view_clipplanes[i].normal);
+		d -= view_clipplanes[i].dist;
+
+		if (d <= 0)
+			return BMODEL_FULLY_CLIPPED;
+
+		acceptpt[0] = minmaxs[pindex[3+0]];
+		acceptpt[1] = minmaxs[pindex[3+1]];
+		acceptpt[2] = minmaxs[pindex[3+2]];
+
+		d = DotProduct (acceptpt, view_clipplanes[i].normal);
+		d -= view_clipplanes[i].dist;
+
+		if (d <= 0)
+			clipflags |= (1<<i);
+	}
+
+	return clipflags;
+}
+
+/*
+===================
+R_FindTopNode
+===================
+*/
+mnode_t *R_FindTopnode (vec3_t mins, vec3_t maxs)
+{
+		mplane_t        *splitplane;
+		int                     sides;
+		mnode_t         *node;
+
+		node = WORLDMODEL->nodes;
+
+		while (1)
+		{
+				if (node->visframe != r_visframecount)
+						return NULL;            // not visible at all
+
+				if (node->contents < 0)
+				{
+						if (node->contents != CONTENTS_SOLID)
+								return node; // we've reached a non-solid leaf, so it's
+														//  visible and not BSP clipped
+						return NULL;    // in solid, so not visible
+				}
+
+				splitplane = node->plane;
+				sides = BOX_ON_PLANE_SIDE (mins, maxs, splitplane);
+
+				if (sides == 3)
+						return node;    // this is the splitter
+
+				// not split yet; recurse down the contacted side
+				if (sides & 1)
+						node = node->children[0];
+				else
+						node = node->children[1];
+		}
+}
+
+
+/*
+=============
+RotatedBBox
+
+Returns an axially aligned box that contains the input box at the given rotation
+=============
+*/
+void RotatedBBox (vec3_t mins, vec3_t maxs, vec3_t angles, vec3_t tmins, vec3_t tmaxs)
+{
+	vec3_t	tmp, v;
+	int		i, j;
+	vec3_t	forward, right, up;
+
+	if (!angles[0] && !angles[1] && !angles[2])
+	{
+		VectorCopy (mins, tmins);
+		VectorCopy (maxs, tmaxs);
+		return;
+	}
+
+	for (i=0 ; i<3 ; i++)
+	{
+		tmins[i] = 99999;
+		tmaxs[i] = -99999;
+	}
+
+	AngleVectors (angles, forward, right, up);
+
+	for ( i = 0; i < 8; i++ )
+	{
+		if ( i & 1 )
+			tmp[0] = mins[0];
+		else
+			tmp[0] = maxs[0];
+
+		if ( i & 2 )
+			tmp[1] = mins[1];
+		else
+			tmp[1] = maxs[1];
+
+		if ( i & 4 )
+			tmp[2] = mins[2];
+		else
+			tmp[2] = maxs[2];
+
+
+		VectorScale (forward, tmp[0], v);
+		VectorMA (v, -tmp[1], right, v);
+		VectorMA (v, tmp[2], up, v);
+
+		for (j=0 ; j<3 ; j++)
+		{
+			if (v[j] < tmins[j])
+				tmins[j] = v[j];
+			if (v[j] > tmaxs[j])
+				tmaxs[j] = v[j];
+		}
+	}
+}
+
 
 /*
 =============
@@ -1117,26 +1266,26 @@ void R_DrawBEntitiesOnList (void)
 
 	VectorCopy (modelorg, oldorigin);
 	insubmodel = true;
-	r_dlightframecount = r_framecount;
+	//r_dlightframecount = r_framecount;
 
-	for (i=0 ; i<r_newrefdef.num_entities ; i++)
+	for( i = 0; i < tr.draw_list->num_solid_entities && !RI.onlyClientDraw; i++ )
 	{
-		currententity = &r_newrefdef.entities[i];
-		currentmodel = currententity->model;
-		if (!currentmodel)
+		RI.currententity = tr.draw_list->solid_entities[i];
+		RI.currentmodel = RI.currententity->model;
+		if (!RI.currentmodel)
 			continue;
-		if (currentmodel->nummodelsurfaces == 0)
+		if (RI.currentmodel->nummodelsurfaces == 0)
 			continue;	// clip brush only
-		if ( currententity->flags & RF_BEAM )
-			continue;
-		if (currentmodel->type != mod_brush)
+		//if ( currententity->flags & RF_BEAM )
+			//continue;
+		if (RI.currentmodel->type != mod_brush)
 			continue;
 	// see if the bounding box lets us trivially reject, also sets
 	// trivial accept status
-		RotatedBBox (currentmodel->mins, currentmodel->maxs,
-			currententity->angles, mins, maxs);
-		VectorAdd (mins, currententity->origin, minmaxs);
-		VectorAdd (maxs, currententity->origin, (minmaxs+3));
+		RotatedBBox (RI.currentmodel->mins, RI.currentmodel->maxs,
+			RI.currententity->angles, mins, maxs);
+		VectorAdd (mins, RI.currententity->origin, minmaxs);
+		VectorAdd (maxs, RI.currententity->origin, (minmaxs+3));
 
 		clipflags = R_BmodelCheckBBox (minmaxs);
 		if (clipflags == BMODEL_FULLY_CLIPPED)
@@ -1146,30 +1295,47 @@ void R_DrawBEntitiesOnList (void)
 		if (!topnode)
 			continue;	// no part in a visible leaf
 
-		VectorCopy (currententity->origin, r_entorigin);
+		VectorCopy (RI.currententity->origin, r_entorigin);
 		VectorSubtract (r_origin, r_entorigin, modelorg);
-
-		r_pcurrentvertbase = currentmodel->vertexes;
+		//VectorSubtract (r_origin, RI.currententity->origin, modelorg);
+		r_pcurrentvertbase = RI.currentmodel->vertexes;
 
 	// FIXME: stop transforming twice
 		R_RotateBmodel ();
 
 	// calculate dynamic lighting for bmodel
-		R_PushDlights (currentmodel);
+		// this will reset RI.currententity, do we need this?
+		//R_PushDlights ();
+		/*if (clmodel->firstmodelsurface != 0)
+		{
+				for (k=0 ; k<r_refdef2.numDlights ; k++)
+				{
+						R_MarkLights (&r_refdef2.dlights[k], 1<<k,
+								clmodel->nodes + clmodel->firstnode);
+				}
+		}*/
 
-		if (topnode->contents == CONTENTS_NODE)
+	//	RI.currentmodel = tr.draw_list->solid_entities[i]->model;
+	//	RI.currententity = tr.draw_list->solid_entities[i];
+		RI.currententity->topnode = topnode;
+//ASSERT( RI.currentmodel == tr.draw_list->solid_entities[i]->model );
+		if (topnode->contents >= 0)
 		{
 		// not a leaf; has to be clipped to the world BSP
 			r_clipflags = clipflags;
-			R_DrawSolidClippedSubmodelPolygons (currentmodel, topnode);
+			R_DrawSolidClippedSubmodelPolygons (RI.currentmodel, topnode);
 		}
 		else
 		{
 		// falls entirely in one leaf, so we just put all the
 		// edges in the edge list and let 1/z sorting handle
 		// drawing order
-			R_DrawSubmodelPolygons (currentmodel, clipflags, topnode);
+			//ASSERT( RI.currentmodel == tr.draw_list->solid_entities[i]->model );
+
+
+			R_DrawSubmodelPolygons (RI.currentmodel, clipflags, topnode);
 		}
+		RI.currententity->topnode = NULL;
 
 	// put back world rotation and frustum clipping
 	// FIXME: R_RotateBmodel should just work off base_vxx
@@ -1227,7 +1393,7 @@ void R_EdgeDrawing (void)
 	R_RenderWorld ();
 
 	// move brushes to separate list to merge with edges?
-	//R_DrawBEntitiesOnList ();
+	R_DrawBEntitiesOnList ();
 
 	// display all edges
 	R_ScanEdges ();
@@ -1372,7 +1538,7 @@ void R_RenderScene( void )
 	// begin a new frame
 	tr.framecount++;
 
-//	R_PushDlights();
+	R_PushDlights();
 
 	R_SetupFrustum();
 	R_SetupFrame();

r_rast.c

@@ -600,7 +600,7 @@ void R_RenderFace (msurface_t *fa, int clipflags)
 			r_pedge = &pedges[lindex];
 
 		// if the edge is cached, we can just reuse the edge
-			//if (!insubmodel)
+			if (!insubmodel)
 			{
 				if (r_pedge->cachededgeoffset & FULLY_CLIPPED_CACHED)
 				{
@@ -644,7 +644,7 @@ void R_RenderFace (msurface_t *fa, int clipflags)
 			lindex = -lindex;
 			r_pedge = &pedges[lindex];
 		// if the edge is cached, we can just reuse the edge
-			//if (!insubmodel)
+			if (!insubmodel)
 			{
 				if (r_pedge->cachededgeoffset & FULLY_CLIPPED_CACHED)
 				{
@@ -715,7 +715,7 @@ void R_RenderFace (msurface_t *fa, int clipflags)
 	surface_p->msurf = fa;
 	surface_p->nearzi = r_nearzi;
 	surface_p->flags = fa->flags;
-	surface_p->insubmodel = false;
+	surface_p->insubmodel = insubmodel;
 	surface_p->spanstate = 0;
 	surface_p->entity = RI.currententity;
 	surface_p->key = r_currentkey++;
@@ -836,7 +836,7 @@ void R_RenderBmodelFace (bedge_t *pedges, msurface_t *psurf)
 	surface_p->msurf = psurf;
 	surface_p->nearzi = r_nearzi;
 	surface_p->flags = psurf->flags;
-	surface_p->insubmodel = false; //true;
+	surface_p->insubmodel = true;
 	surface_p->spanstate = 0;
 	surface_p->entity = RI.currententity;
 	surface_p->key = r_currentbkey;