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Diffstat (limited to 'src/renderergl2/tr_world.cpp')
| -rw-r--r-- | src/renderergl2/tr_world.cpp | 811 |
1 files changed, 811 insertions, 0 deletions
diff --git a/src/renderergl2/tr_world.cpp b/src/renderergl2/tr_world.cpp new file mode 100644 index 0000000..0361a88 --- /dev/null +++ b/src/renderergl2/tr_world.cpp @@ -0,0 +1,811 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. +Copyright (C) 2000-2013 Darklegion Development +Copyright (C) 2015-2019 GrangerHub + +This file is part of Tremulous. + +Tremulous is free software; you can redistribute it +and/or modify it under the terms of the GNU General Public License as +published by the Free Software Foundation; either version 3 of the License, +or (at your option) any later version. + +Tremulous is distributed in the hope that it will be +useful, but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with Tremulous; if not, see <https://www.gnu.org/licenses/> + +=========================================================================== +*/ +#include "tr_local.h" + + + +/* +================ +R_CullSurface + +Tries to cull surfaces before they are lighted or +added to the sorting list. +================ +*/ +static bool R_CullSurface( msurface_t *surf ) { + if ( r_nocull->integer || surf->cullinfo.type == CULLINFO_NONE) { + return false; + } + + if ( *surf->data == SF_GRID && r_nocurves->integer ) { + return true; + } + + if (surf->cullinfo.type & CULLINFO_PLANE) + { + // Only true for SF_FACE, so treat like its own function + float d; + cullType_t ct; + + if ( !r_facePlaneCull->integer ) { + return false; + } + + ct = surf->shader->cullType; + + if (ct == CT_TWO_SIDED) + { + return false; + } + + // don't cull for depth shadow + /* + if ( tr.viewParms.flags & VPF_DEPTHSHADOW ) + { + return false; + } + */ + + // shadowmaps draw back surfaces + if ( tr.viewParms.flags & (VPF_SHADOWMAP | VPF_DEPTHSHADOW) ) + { + if (ct == CT_FRONT_SIDED) + { + ct = CT_BACK_SIDED; + } + else + { + ct = CT_FRONT_SIDED; + } + } + + // do proper cull for orthographic projection + if (tr.viewParms.flags & VPF_ORTHOGRAPHIC) { + d = DotProduct(tr.viewParms.orientation.axis[0], surf->cullinfo.plane.normal); + if ( ct == CT_FRONT_SIDED ) { + if (d > 0) + return true; + } else { + if (d < 0) + return true; + } + return false; + } + + d = DotProduct (tr.orientation.viewOrigin, surf->cullinfo.plane.normal); + + // don't cull exactly on the plane, because there are levels of rounding + // through the BSP, ICD, and hardware that may cause pixel gaps if an + // epsilon isn't allowed here + if ( ct == CT_FRONT_SIDED ) { + if ( d < surf->cullinfo.plane.dist - 8 ) { + return true; + } + } else { + if ( d > surf->cullinfo.plane.dist + 8 ) { + return true; + } + } + + return false; + } + + if (surf->cullinfo.type & CULLINFO_SPHERE) + { + int sphereCull; + + if ( tr.currentEntityNum != REFENTITYNUM_WORLD ) { + sphereCull = R_CullLocalPointAndRadius( surf->cullinfo.localOrigin, surf->cullinfo.radius ); + } else { + sphereCull = R_CullPointAndRadius( surf->cullinfo.localOrigin, surf->cullinfo.radius ); + } + + if ( sphereCull == CULL_OUT ) + { + return true; + } + } + + if (surf->cullinfo.type & CULLINFO_BOX) + { + int boxCull; + + if ( tr.currentEntityNum != REFENTITYNUM_WORLD ) { + boxCull = R_CullLocalBox( surf->cullinfo.bounds ); + } else { + boxCull = R_CullBox( surf->cullinfo.bounds ); + } + + if ( boxCull == CULL_OUT ) + { + return true; + } + } + + return false; +} + + +/* +==================== +R_DlightSurface + +The given surface is going to be drawn, and it touches a leaf +that is touched by one or more dlights, so try to throw out +more dlights if possible. +==================== +*/ +static int R_DlightSurface( msurface_t *surf, int dlightBits ) { + float d; + int i; + dlight_t *dl; + + if ( surf->cullinfo.type & CULLINFO_PLANE ) + { + for ( i = 0 ; i < tr.refdef.num_dlights ; i++ ) { + if ( ! ( dlightBits & ( 1 << i ) ) ) { + continue; + } + dl = &tr.refdef.dlights[i]; + d = DotProduct( dl->origin, surf->cullinfo.plane.normal ) - surf->cullinfo.plane.dist; + if ( d < -dl->radius || d > dl->radius ) { + // dlight doesn't reach the plane + dlightBits &= ~( 1 << i ); + } + } + } + + if ( surf->cullinfo.type & CULLINFO_BOX ) + { + for ( i = 0 ; i < tr.refdef.num_dlights ; i++ ) { + if ( ! ( dlightBits & ( 1 << i ) ) ) { + continue; + } + dl = &tr.refdef.dlights[i]; + if ( dl->origin[0] - dl->radius > surf->cullinfo.bounds[1][0] + || dl->origin[0] + dl->radius < surf->cullinfo.bounds[0][0] + || dl->origin[1] - dl->radius > surf->cullinfo.bounds[1][1] + || dl->origin[1] + dl->radius < surf->cullinfo.bounds[0][1] + || dl->origin[2] - dl->radius > surf->cullinfo.bounds[1][2] + || dl->origin[2] + dl->radius < surf->cullinfo.bounds[0][2] ) { + // dlight doesn't reach the bounds + dlightBits &= ~( 1 << i ); + } + } + } + + if ( surf->cullinfo.type & CULLINFO_SPHERE ) + { + for ( i = 0 ; i < tr.refdef.num_dlights ; i++ ) { + if ( ! ( dlightBits & ( 1 << i ) ) ) { + continue; + } + dl = &tr.refdef.dlights[i]; + if (!SpheresIntersect(dl->origin, dl->radius, surf->cullinfo.localOrigin, surf->cullinfo.radius)) + { + // dlight doesn't reach the bounds + dlightBits &= ~( 1 << i ); + } + } + } + + switch(*surf->data) + { + case SF_FACE: + case SF_GRID: + case SF_TRIANGLES: + ((srfBspSurface_t *)surf->data)->dlightBits = dlightBits; + break; + + default: + dlightBits = 0; + break; + } + + if ( dlightBits ) { + tr.pc.c_dlightSurfaces++; + } else { + tr.pc.c_dlightSurfacesCulled++; + } + + return dlightBits; +} + +/* +==================== +R_PshadowSurface + +Just like R_DlightSurface, cull any we can +==================== +*/ +static int R_PshadowSurface( msurface_t *surf, int pshadowBits ) { + float d; + int i; + pshadow_t *ps; + + if ( surf->cullinfo.type & CULLINFO_PLANE ) + { + for ( i = 0 ; i < tr.refdef.num_pshadows ; i++ ) { + if ( ! ( pshadowBits & ( 1 << i ) ) ) { + continue; + } + ps = &tr.refdef.pshadows[i]; + d = DotProduct( ps->lightOrigin, surf->cullinfo.plane.normal ) - surf->cullinfo.plane.dist; + if ( d < -ps->lightRadius || d > ps->lightRadius ) { + // pshadow doesn't reach the plane + pshadowBits &= ~( 1 << i ); + } + } + } + + if ( surf->cullinfo.type & CULLINFO_BOX ) + { + for ( i = 0 ; i < tr.refdef.num_pshadows ; i++ ) { + if ( ! ( pshadowBits & ( 1 << i ) ) ) { + continue; + } + ps = &tr.refdef.pshadows[i]; + if ( ps->lightOrigin[0] - ps->lightRadius > surf->cullinfo.bounds[1][0] + || ps->lightOrigin[0] + ps->lightRadius < surf->cullinfo.bounds[0][0] + || ps->lightOrigin[1] - ps->lightRadius > surf->cullinfo.bounds[1][1] + || ps->lightOrigin[1] + ps->lightRadius < surf->cullinfo.bounds[0][1] + || ps->lightOrigin[2] - ps->lightRadius > surf->cullinfo.bounds[1][2] + || ps->lightOrigin[2] + ps->lightRadius < surf->cullinfo.bounds[0][2] + || BoxOnPlaneSide(surf->cullinfo.bounds[0], surf->cullinfo.bounds[1], &ps->cullPlane) == 2 ) { + // pshadow doesn't reach the bounds + pshadowBits &= ~( 1 << i ); + } + } + } + + if ( surf->cullinfo.type & CULLINFO_SPHERE ) + { + for ( i = 0 ; i < tr.refdef.num_pshadows ; i++ ) { + if ( ! ( pshadowBits & ( 1 << i ) ) ) { + continue; + } + ps = &tr.refdef.pshadows[i]; + if (!SpheresIntersect(ps->viewOrigin, ps->viewRadius, surf->cullinfo.localOrigin, surf->cullinfo.radius) + || DotProduct( surf->cullinfo.localOrigin, ps->cullPlane.normal ) - ps->cullPlane.dist < -surf->cullinfo.radius) + { + // pshadow doesn't reach the bounds + pshadowBits &= ~( 1 << i ); + } + } + } + + switch(*surf->data) + { + case SF_FACE: + case SF_GRID: + case SF_TRIANGLES: + ((srfBspSurface_t *)surf->data)->pshadowBits = pshadowBits; + break; + + default: + pshadowBits = 0; + break; + } + + if ( pshadowBits ) { + //tr.pc.c_dlightSurfaces++; + } + + return pshadowBits; +} + + +/* +====================== +R_AddWorldSurface +====================== +*/ +static void R_AddWorldSurface( msurface_t *surf, int dlightBits, int pshadowBits ) { + // FIXME: bmodel fog? + + // try to cull before dlighting or adding + if ( R_CullSurface( surf ) ) { + return; + } + + // check for dlighting + /*if ( dlightBits ) */{ + dlightBits = R_DlightSurface( surf, dlightBits ); + dlightBits = ( dlightBits != 0 ); + } + + // check for pshadows + /*if ( pshadowBits ) */{ + pshadowBits = R_PshadowSurface( surf, pshadowBits); + pshadowBits = ( pshadowBits != 0 ); + } + + R_AddDrawSurf( surf->data, surf->shader, surf->fogIndex, dlightBits, pshadowBits, surf->cubemapIndex ); +} + +/* +============================================================= + + BRUSH MODELS + +============================================================= +*/ + +/* +================= +R_AddBrushModelSurfaces +================= +*/ +void R_AddBrushModelSurfaces ( trRefEntity_t *ent ) { + bmodel_t *bmodel; + int clip; + model_t *pModel; + int i; + + pModel = R_GetModelByHandle( ent->e.hModel ); + + bmodel = pModel->bmodel; + + clip = R_CullLocalBox( bmodel->bounds ); + if ( clip == CULL_OUT ) { + return; + } + + R_SetupEntityLighting( &tr.refdef, ent ); + R_DlightBmodel( bmodel ); + + for ( i = 0 ; i < bmodel->numSurfaces ; i++ ) { + int surf = bmodel->firstSurface + i; + + if (tr.world->surfacesViewCount[surf] != tr.viewCount) + { + tr.world->surfacesViewCount[surf] = tr.viewCount; + R_AddWorldSurface( tr.world->surfaces + surf, tr.currentEntity->needDlights, 0 ); + } + } +} + + +/* +============================================================= + + WORLD MODEL + +============================================================= +*/ + + +/* +================ +R_RecursiveWorldNode +================ +*/ +static void R_RecursiveWorldNode( mnode_t *node, uint32_t planeBits, uint32_t dlightBits, uint32_t pshadowBits ) { + + do { + uint32_t newDlights[2]; + uint32_t newPShadows[2]; + + // if the node wasn't marked as potentially visible, exit + // pvs is skipped for depth shadows + if (!(tr.viewParms.flags & VPF_DEPTHSHADOW) && node->visCounts[tr.visIndex] != tr.visCounts[tr.visIndex]) { + return; + } + + // if the bounding volume is outside the frustum, nothing + // inside can be visible OPTIMIZE: don't do this all the way to leafs? + + if ( !r_nocull->integer ) { + int r; + + if ( planeBits & 1 ) { + r = BoxOnPlaneSide(node->mins, node->maxs, &tr.viewParms.frustum[0]); + if (r == 2) { + return; // culled + } + if ( r == 1 ) { + planeBits &= ~1; // all descendants will also be in front + } + } + + if ( planeBits & 2 ) { + r = BoxOnPlaneSide(node->mins, node->maxs, &tr.viewParms.frustum[1]); + if (r == 2) { + return; // culled + } + if ( r == 1 ) { + planeBits &= ~2; // all descendants will also be in front + } + } + + if ( planeBits & 4 ) { + r = BoxOnPlaneSide(node->mins, node->maxs, &tr.viewParms.frustum[2]); + if (r == 2) { + return; // culled + } + if ( r == 1 ) { + planeBits &= ~4; // all descendants will also be in front + } + } + + if ( planeBits & 8 ) { + r = BoxOnPlaneSide(node->mins, node->maxs, &tr.viewParms.frustum[3]); + if (r == 2) { + return; // culled + } + if ( r == 1 ) { + planeBits &= ~8; // all descendants will also be in front + } + } + + if ( planeBits & 16 ) { + r = BoxOnPlaneSide(node->mins, node->maxs, &tr.viewParms.frustum[4]); + if (r == 2) { + return; // culled + } + if ( r == 1 ) { + planeBits &= ~16; // all descendants will also be in front + } + } + } + + if ( node->contents != -1 ) { + break; + } + + // node is just a decision point, so go down both sides + // since we don't care about sort orders, just go positive to negative + + // determine which dlights are needed + newDlights[0] = 0; + newDlights[1] = 0; + if ( dlightBits ) { + int i; + + for ( i = 0 ; i < tr.refdef.num_dlights ; i++ ) { + dlight_t *dl; + float dist; + + if ( dlightBits & ( 1 << i ) ) { + dl = &tr.refdef.dlights[i]; + dist = DotProduct( dl->origin, node->plane->normal ) - node->plane->dist; + + if ( dist > -dl->radius ) { + newDlights[0] |= ( 1 << i ); + } + if ( dist < dl->radius ) { + newDlights[1] |= ( 1 << i ); + } + } + } + } + + newPShadows[0] = 0; + newPShadows[1] = 0; + if ( pshadowBits ) { + int i; + + for ( i = 0 ; i < tr.refdef.num_pshadows ; i++ ) { + pshadow_t *shadow; + float dist; + + if ( pshadowBits & ( 1 << i ) ) { + shadow = &tr.refdef.pshadows[i]; + dist = DotProduct( shadow->lightOrigin, node->plane->normal ) - node->plane->dist; + + if ( dist > -shadow->lightRadius ) { + newPShadows[0] |= ( 1 << i ); + } + if ( dist < shadow->lightRadius ) { + newPShadows[1] |= ( 1 << i ); + } + } + } + } + + // recurse down the children, front side first + R_RecursiveWorldNode (node->children[0], planeBits, newDlights[0], newPShadows[0] ); + + // tail recurse + node = node->children[1]; + dlightBits = newDlights[1]; + pshadowBits = newPShadows[1]; + } while ( 1 ); + + { + // leaf node, so add mark surfaces + int c; + int surf, *view; + + tr.pc.c_leafs++; + + // add to z buffer bounds + if ( node->mins[0] < tr.viewParms.visBounds[0][0] ) { + tr.viewParms.visBounds[0][0] = node->mins[0]; + } + if ( node->mins[1] < tr.viewParms.visBounds[0][1] ) { + tr.viewParms.visBounds[0][1] = node->mins[1]; + } + if ( node->mins[2] < tr.viewParms.visBounds[0][2] ) { + tr.viewParms.visBounds[0][2] = node->mins[2]; + } + + if ( node->maxs[0] > tr.viewParms.visBounds[1][0] ) { + tr.viewParms.visBounds[1][0] = node->maxs[0]; + } + if ( node->maxs[1] > tr.viewParms.visBounds[1][1] ) { + tr.viewParms.visBounds[1][1] = node->maxs[1]; + } + if ( node->maxs[2] > tr.viewParms.visBounds[1][2] ) { + tr.viewParms.visBounds[1][2] = node->maxs[2]; + } + + // add surfaces + view = tr.world->marksurfaces + node->firstmarksurface; + + c = node->nummarksurfaces; + while (c--) { + // just mark it as visible, so we don't jump out of the cache derefencing the surface + surf = *view; + if (tr.world->surfacesViewCount[surf] != tr.viewCount) + { + tr.world->surfacesViewCount[surf] = tr.viewCount; + tr.world->surfacesDlightBits[surf] = dlightBits; + tr.world->surfacesPshadowBits[surf] = pshadowBits; + } + else + { + tr.world->surfacesDlightBits[surf] |= dlightBits; + tr.world->surfacesPshadowBits[surf] |= pshadowBits; + } + view++; + } + } + +} + + +/* +=============== +R_PointInLeaf +=============== +*/ +static mnode_t *R_PointInLeaf( const vec3_t p ) { + mnode_t *node; + float d; + cplane_t *plane; + + if ( !tr.world ) { + ri.Error (ERR_DROP, "R_PointInLeaf: bad model"); + } + + node = tr.world->nodes; + while( 1 ) { + if (node->contents != -1) { + break; + } + plane = node->plane; + d = DotProduct (p,plane->normal) - plane->dist; + if (d > 0) { + node = node->children[0]; + } else { + node = node->children[1]; + } + } + + return node; +} + +/* +============== +R_ClusterPVS +============== +*/ +static const byte *R_ClusterPVS (int cluster) { + if (!tr.world->vis || cluster < 0 || cluster >= tr.world->numClusters ) { + return NULL; + } + + return tr.world->vis + cluster * tr.world->clusterBytes; +} + +/* +================= +R_inPVS +================= +*/ +bool R_inPVS( const vec3_t p1, const vec3_t p2 ) { + mnode_t *leaf; + byte *vis; + + leaf = R_PointInLeaf( p1 ); + vis = ri.CM_ClusterPVS( leaf->cluster ); // why not R_ClusterPVS ?? + leaf = R_PointInLeaf( p2 ); + + if ( !(vis[leaf->cluster>>3] & (1<<(leaf->cluster&7))) ) { + return false; + } + return true; +} + +/* +=============== +R_MarkLeaves + +Mark the leaves and nodes that are in the PVS for the current +cluster +=============== +*/ +static void R_MarkLeaves (void) { + const byte *vis; + mnode_t *leaf, *parent; + int i; + int cluster; + + // lockpvs lets designers walk around to determine the + // extent of the current pvs + if ( r_lockpvs->integer ) { + return; + } + + // current viewcluster + leaf = R_PointInLeaf( tr.viewParms.pvsOrigin ); + cluster = leaf->cluster; + + // if the cluster is the same and the area visibility matrix + // hasn't changed, we don't need to mark everything again + + for(i = 0; i < MAX_VISCOUNTS; i++) + { + // if the areamask or r_showcluster was modified, invalidate all visclusters + // this caused doors to open into undrawn areas + if (tr.refdef.areamaskModified || r_showcluster->modified) + { + tr.visClusters[i] = -2; + } + else if(tr.visClusters[i] == cluster) + { + if(tr.visClusters[i] != tr.visClusters[tr.visIndex] && r_showcluster->integer) + { + ri.Printf(PRINT_ALL, "found cluster:%i area:%i index:%i\n", cluster, leaf->area, i); + } + tr.visIndex = i; + return; + } + } + + tr.visIndex = (tr.visIndex + 1) % MAX_VISCOUNTS; + tr.visCounts[tr.visIndex]++; + tr.visClusters[tr.visIndex] = cluster; + + if ( r_showcluster->modified || r_showcluster->integer ) { + r_showcluster->modified = false; + if ( r_showcluster->integer ) { + ri.Printf( PRINT_ALL, "cluster:%i area:%i\n", cluster, leaf->area ); + } + } + + vis = R_ClusterPVS(tr.visClusters[tr.visIndex]); + + for (i=0,leaf=tr.world->nodes ; i<tr.world->numnodes ; i++, leaf++) { + cluster = leaf->cluster; + if ( cluster < 0 || cluster >= tr.world->numClusters ) { + continue; + } + + // check general pvs + if ( vis && !(vis[cluster>>3] & (1<<(cluster&7))) ) { + continue; + } + + // check for door connection + if ( (tr.refdef.areamask[leaf->area>>3] & (1<<(leaf->area&7)) ) ) { + continue; // not visible + } + + parent = leaf; + do { + if(parent->visCounts[tr.visIndex] == tr.visCounts[tr.visIndex]) + break; + parent->visCounts[tr.visIndex] = tr.visCounts[tr.visIndex]; + parent = parent->parent; + } while (parent); + } +} + + +/* +============= +R_AddWorldSurfaces +============= +*/ +void R_AddWorldSurfaces (void) { + uint32_t planeBits, dlightBits, pshadowBits; + + if ( !r_drawworld->integer ) { + return; + } + + if ( tr.refdef.rdflags & RDF_NOWORLDMODEL ) { + return; + } + + tr.currentEntityNum = REFENTITYNUM_WORLD; + tr.shiftedEntityNum = tr.currentEntityNum << QSORT_REFENTITYNUM_SHIFT; + + // determine which leaves are in the PVS / areamask + if (!(tr.viewParms.flags & VPF_DEPTHSHADOW)) + R_MarkLeaves (); + + // clear out the visible min/max + ClearBounds( tr.viewParms.visBounds[0], tr.viewParms.visBounds[1] ); + + // perform frustum culling and flag all the potentially visible surfaces + if ( tr.refdef.num_dlights > MAX_DLIGHTS ) { + tr.refdef.num_dlights = MAX_DLIGHTS ; + } + + if ( tr.refdef.num_pshadows > MAX_DRAWN_PSHADOWS ) { + tr.refdef.num_pshadows = MAX_DRAWN_PSHADOWS; + } + + planeBits = (tr.viewParms.flags & VPF_FARPLANEFRUSTUM) ? 31 : 15; + + if ( tr.viewParms.flags & VPF_DEPTHSHADOW ) + { + dlightBits = 0; + pshadowBits = 0; + } + else if ( !(tr.viewParms.flags & VPF_SHADOWMAP) ) + { + dlightBits = ( 1ULL << tr.refdef.num_dlights ) - 1; + pshadowBits = ( 1ULL << tr.refdef.num_pshadows ) - 1; + } + else + { + dlightBits = ( 1ULL << tr.refdef.num_dlights ) - 1; + pshadowBits = 0; + } + + R_RecursiveWorldNode( tr.world->nodes, planeBits, dlightBits, pshadowBits); + + // now add all the potentially visible surfaces + // also mask invisible dlights for next frame + { + int i; + + tr.refdef.dlightMask = 0; + + for (i = 0; i < tr.world->numWorldSurfaces; i++) + { + if (tr.world->surfacesViewCount[i] != tr.viewCount) + continue; + + R_AddWorldSurface( tr.world->surfaces + i, tr.world->surfacesDlightBits[i], tr.world->surfacesPshadowBits[i] ); + tr.refdef.dlightMask |= tr.world->surfacesDlightBits[i]; + } + + tr.refdef.dlightMask = ~tr.refdef.dlightMask; + } +} |