added optimized case in R_Q1BSP_GetLightInfo surface culling that skips checking...

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@6917 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/gl_rsurf.c b/gl_rsurf.c
index afea17db72443310ccc2387ae6ec4ece71348669..7b60cf6f4eec52f211ca7531fe7ff9ba83390121 100644 (file)
--- a/gl_rsurf.c
+++ b/gl_rsurf.c
@@ -653,31 +653,61 @@ void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
                                if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs)
                                 && (!info->svbsp_insertoccluder || !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)))
                                {
-                                       for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
+                                       if (BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs))
                                        {
-                                               v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
-                                               v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
-                                               v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
-                                               if ((!r_shadow_frontsidecasting.integer || PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
-                                                && info->lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0]))
-                                                && info->lightmins[0] < max(v[0][0], max(v[1][0], v[2][0]))
-                                                && info->lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1]))
-                                                && info->lightmins[1] < max(v[0][1], max(v[1][1], v[2][1]))
-                                                && info->lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2]))
-                                                && info->lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
+                                               // surface is entirely inside light box
+                                               for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
                                                {
-                                                       if (info->svbsp_active)
+                                                       v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
+                                                       v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
+                                                       v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
+                                                       if ((!r_shadow_frontsidecasting.integer || PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2])))
                                                        {
-                                                               VectorCopy(v[0], v2[0]);
-                                                               VectorCopy(v[1], v2[1]);
-                                                               VectorCopy(v[2], v2[2]);
-                                                               if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], info->svbsp_insertoccluder, NULL, NULL, 0) & 2))
-                                                                       continue;
+                                                               if (info->svbsp_active)
+                                                               {
+                                                                       VectorCopy(v[0], v2[0]);
+                                                                       VectorCopy(v[1], v2[1]);
+                                                                       VectorCopy(v[2], v2[2]);
+                                                                       if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], info->svbsp_insertoccluder, NULL, NULL, 0) & 2))
+                                                                               continue;
+                                                               }
+                                                               SETPVSBIT(info->outsurfacepvs, surfaceindex);
+                                                               info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
+                                                               if (!info->svbsp_insertoccluder)
+                                                                       break;
+                                                       }
+                                               }
+                                       }
+                                       else
+                                       {
+                                               // surface is partially clipped by lightbox
+                                               // check each triangle's bounding box
+                                               for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
+                                               {
+                                                       v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
+                                                       v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
+                                                       v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
+                                                       if ((!r_shadow_frontsidecasting.integer || PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
+                                                        && info->lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0]))
+                                                        && info->lightmins[0] < max(v[0][0], max(v[1][0], v[2][0]))
+                                                        && info->lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1]))
+                                                        && info->lightmins[1] < max(v[0][1], max(v[1][1], v[2][1]))
+                                                        && info->lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2]))
+                                                        && info->lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
+                                                       {
+                                                               if (info->svbsp_active)
+                                                               {
+                                                                       VectorCopy(v[0], v2[0]);
+                                                                       VectorCopy(v[1], v2[1]);
+                                                                       VectorCopy(v[2], v2[2]);
+                                                                       if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], info->svbsp_insertoccluder, NULL, NULL, 0) & 2))
+                                                                               continue;
+                                                               }
+                                                               SETPVSBIT(info->outsurfacepvs, surfaceindex);
+                                                               info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
+                                                               if (!info->svbsp_insertoccluder)
+                                                                       break;
                                                        }
-                                                       SETPVSBIT(info->outsurfacepvs, surfaceindex);
-                                                       info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
-                                                       if (!info->svbsp_insertoccluder)
-                                                               break;
                                                }
                                        }
                                }