/*
================
idPhysics_StaticMulti::GetBounds
================
*/
const idBounds &idPhysics_StaticMulti::GetBounds( int id ) const {
int i;
static idBounds bounds;
if ( id >= 0 && id < clipModels.Num() ) {
if ( clipModels[id] ) {
return clipModels[id]->GetBounds();
}
}
if ( id == -1 ) {
bounds.Clear();
for ( i = 0; i < clipModels.Num(); i++ ) {
if ( clipModels[i] ) {
bounds.AddBounds( clipModels[i]->GetAbsBounds() );
}
}
for ( i = 0; i < clipModels.Num(); i++ ) {
if ( clipModels[i] ) {
bounds[0] -= clipModels[i]->GetOrigin();
bounds[1] -= clipModels[i]->GetOrigin();
break;
}
}
return bounds;
}
return bounds_zero;
}
/*
=================
AddOriginalEdges
=================
*/
static void AddOriginalEdges( optimizeGroup_t *opt ) {
mapTri_t *tri;
optVertex_t *v[3];
int numTris;
if ( dmapGlobals.verbose ) {
common->Printf( "----\n" );
common->Printf( "%6i original tris\n", CountTriList( opt->triList ) );
}
optBounds.Clear();
// allocate space for max possible edges
numTris = CountTriList( opt->triList );
originalEdges = (originalEdges_t *)Mem_Alloc( numTris * 3 * sizeof( *originalEdges ), TAG_DMAP );
numOriginalEdges = 0;
// add all unique triangle edges
numOptVerts = 0;
numOptEdges = 0;
for ( tri = opt->triList ; tri ; tri = tri->next ) {
v[0] = tri->optVert[0] = FindOptVertex( &tri->v[0], opt );
v[1] = tri->optVert[1] = FindOptVertex( &tri->v[1], opt );
v[2] = tri->optVert[2] = FindOptVertex( &tri->v[2], opt );
AddOriginalTriangle( v );
}
}
/*
================
BoundTriList
================
*/
void BoundTriList( const mapTri_t *list, idBounds &b ) {
b.Clear();
for ( ; list ; list = list->next ) {
b.AddPoint( list->v[0].xyz );
b.AddPoint( list->v[1].xyz );
b.AddPoint( list->v[2].xyz );
}
}
/*
=================
HashTriangles
Removes triangles that are degenerated or flipped backwards
=================
*/
void HashTriangles(optimizeGroup_t *groupList)
{
mapTri_t *a;
int vert;
int i;
optimizeGroup_t *group;
// clear the hash tables
memset(hashVerts, 0, sizeof(hashVerts));
numHashVerts = 0;
numTotalVerts = 0;
// bound all the triangles to determine the bucket size
hashBounds.Clear();
for (group = groupList ; group ; group = group->nextGroup) {
for (a = group->triList ; a ; a = a->next) {
hashBounds.AddPoint(a->v[0].xyz);
hashBounds.AddPoint(a->v[1].xyz);
hashBounds.AddPoint(a->v[2].xyz);
}
}
// spread the bounds so it will never have a zero size
for (i = 0 ; i < 3 ; i++) {
hashBounds[0][i] = floor(hashBounds[0][i] - 1);
hashBounds[1][i] = ceil(hashBounds[1][i] + 1);
hashIntMins[i] = hashBounds[0][i] * SNAP_FRACTIONS;
hashScale[i] = (hashBounds[1][i] - hashBounds[0][i]) / HASH_BINS;
hashIntScale[i] = hashScale[i] * SNAP_FRACTIONS;
if (hashIntScale[i] < 1) {
hashIntScale[i] = 1;
}
}
// add all the points to the hash buckets
for (group = groupList ; group ; group = group->nextGroup) {
// don't create tjunctions against discrete surfaces (blood decals, etc)
if (group->material != NULL && group->material->IsDiscrete()) {
continue;
}
for (a = group->triList ; a ; a = a->next) {
for (vert = 0 ; vert < 3 ; vert++) {
a->hashVert[vert] = GetHashVert(a->v[vert].xyz);
}
}
}
}
/*
=========================
R_PreciseCullSurface
Check the surface for visibility on a per-triangle basis
for cases when it is going to be VERY expensive to draw (subviews)
If not culled, also returns the bounding box of the surface in
Normalized Device Coordinates, so it can be used to crop the scissor rect.
OPTIMIZE: we could also take exact portal passing into consideration
=========================
*/
bool R_PreciseCullSurface( const drawSurf_t *drawSurf, idBounds &ndcBounds ) {
const srfTriangles_t *tri;
int numTriangles;
idPlane clip, eye;
int i, j;
unsigned int pointOr;
unsigned int pointAnd;
idVec3 localView;
idFixedWinding w;
tri = drawSurf->geo;
pointOr = 0;
pointAnd = (unsigned int)~0;
// get an exact bounds of the triangles for scissor cropping
ndcBounds.Clear();
for ( i = 0; i < tri->numVerts; i++ ) {
int j;
unsigned int pointFlags;
R_TransformModelToClip( tri->verts[i].xyz, drawSurf->space->modelViewMatrix,
tr.viewDef->projectionMatrix, eye, clip );
pointFlags = 0;
for ( j = 0; j < 3; j++ ) {
if ( clip[j] >= clip[3] ) {
pointFlags |= (1 << (j*2));
} else if ( clip[j] <= -clip[3] ) {
pointFlags |= ( 1 << (j*2+1));
}
}
pointAnd &= pointFlags;
pointOr |= pointFlags;
}
// trivially reject
if ( pointAnd ) {
return true;
}
// backface and frustum cull
numTriangles = tri->numIndexes / 3;
R_GlobalPointToLocal( drawSurf->space->modelMatrix, tr.viewDef->renderView.vieworg, localView );
for ( i = 0; i < tri->numIndexes; i += 3 ) {
idVec3 dir, normal;
float dot;
idVec3 d1, d2;
const idVec3 &v1 = tri->verts[tri->indexes[i]].xyz;
const idVec3 &v2 = tri->verts[tri->indexes[i+1]].xyz;
const idVec3 &v3 = tri->verts[tri->indexes[i+2]].xyz;
// this is a hack, because R_GlobalPointToLocal doesn't work with the non-normalized
// axis that we get from the gui view transform. It doesn't hurt anything, because
// we know that all gui generated surfaces are front facing
if ( tr.guiRecursionLevel == 0 ) {
// we don't care that it isn't normalized,
// all we want is the sign
d1 = v2 - v1;
d2 = v3 - v1;
normal = d2.Cross( d1 );
dir = v1 - localView;
dot = normal * dir;
if ( dot >= 0.0f ) {
return true;
}
}
// now find the exact screen bounds of the clipped triangle
w.SetNumPoints( 3 );
R_LocalPointToGlobal( drawSurf->space->modelMatrix, v1, w[0].ToVec3() );
R_LocalPointToGlobal( drawSurf->space->modelMatrix, v2, w[1].ToVec3() );
R_LocalPointToGlobal( drawSurf->space->modelMatrix, v3, w[2].ToVec3() );
w[0].s = w[0].t = w[1].s = w[1].t = w[2].s = w[2].t = 0.0f;
for ( j = 0; j < 4; j++ ) {
if ( !w.ClipInPlace( -tr.viewDef->frustum[j], 0.1f ) ) {
break;
}
}
for ( j = 0; j < w.GetNumPoints(); j++ ) {
idVec3 screen;
R_GlobalToNormalizedDeviceCoordinates( w[j].ToVec3(), screen );
ndcBounds.AddPoint( screen );
}
}
// if we don't enclose any area, return
if ( ndcBounds.IsCleared() ) {
return true;
}
return false;
}
/*
==================
FixGlobalTjunctions
==================
*/
void FixGlobalTjunctions( uEntity_t *e ) {
mapTri_t *a;
int vert;
int i;
optimizeGroup_t *group;
int areaNum;
common->Printf( "----- FixGlobalTjunctions -----\n" );
// clear the hash tables
memset( hashVerts, 0, sizeof( hashVerts ) );
numHashVerts = 0;
numTotalVerts = 0;
// bound all the triangles to determine the bucket size
hashBounds.Clear();
for ( areaNum = 0 ; areaNum < e->numAreas ; areaNum++ ) {
for ( group = e->areas[areaNum].groups ; group ; group = group->nextGroup ) {
for ( a = group->triList ; a ; a = a->next ) {
hashBounds.AddPoint( a->v[0].xyz );
hashBounds.AddPoint( a->v[1].xyz );
hashBounds.AddPoint( a->v[2].xyz );
}
}
}
// spread the bounds so it will never have a zero size
for ( i = 0 ; i < 3 ; i++ ) {
hashBounds[0][i] = floor( hashBounds[0][i] - 1 );
hashBounds[1][i] = ceil( hashBounds[1][i] + 1 );
hashIntMins[i] = hashBounds[0][i] * SNAP_FRACTIONS;
hashScale[i] = ( hashBounds[1][i] - hashBounds[0][i] ) / HASH_BINS;
hashIntScale[i] = hashScale[i] * SNAP_FRACTIONS;
if ( hashIntScale[i] < 1 ) {
hashIntScale[i] = 1;
}
}
// add all the points to the hash buckets
for ( areaNum = 0 ; areaNum < e->numAreas ; areaNum++ ) {
for ( group = e->areas[areaNum].groups ; group ; group = group->nextGroup ) {
// don't touch discrete surfaces
if ( group->material != NULL && group->material->IsDiscrete() ) {
continue;
}
for ( a = group->triList ; a ; a = a->next ) {
for ( vert = 0 ; vert < 3 ; vert++ ) {
a->hashVert[vert] = GetHashVert( a->v[vert].xyz );
}
}
}
}
// add all the func_static model vertexes to the hash buckets
// optionally inline some of the func_static models
if ( dmapGlobals.entityNum == 0 ) {
for ( int eNum = 1 ; eNum < dmapGlobals.num_entities ; eNum++ ) {
uEntity_t *entity = &dmapGlobals.uEntities[eNum];
const char *className = entity->mapEntity->epairs.GetString( "classname" );
if ( idStr::Icmp( className, "func_static" ) ) {
continue;
}
const char *modelName = entity->mapEntity->epairs.GetString( "model" );
if ( !modelName ) {
continue;
}
if ( !strstr( modelName, ".lwo" ) && !strstr( modelName, ".ase" ) && !strstr( modelName, ".ma" ) ) {
continue;
}
idRenderModel *model = renderModelManager->FindModel( modelName );
// common->Printf( "adding T junction verts for %s.\n", entity->mapEntity->epairs.GetString( "name" ) );
idMat3 axis;
// get the rotation matrix in either full form, or single angle form
if ( !entity->mapEntity->epairs.GetMatrix( "rotation", "1 0 0 0 1 0 0 0 1", axis ) ) {
float angle = entity->mapEntity->epairs.GetFloat( "angle" );
if ( angle != 0.0f ) {
axis = idAngles( 0.0f, angle, 0.0f ).ToMat3();
} else {
axis.Identity();
}
}
idVec3 origin = entity->mapEntity->epairs.GetVector( "origin" );
for ( i = 0 ; i < model->NumSurfaces() ; i++ ) {
const modelSurface_t *surface = model->Surface( i );
const srfTriangles_t *tri = surface->geometry;
mapTri_t mapTri;
memset( &mapTri, 0, sizeof( mapTri ) );
mapTri.material = surface->shader;
// don't let discretes (autosprites, etc) merge together
if ( mapTri.material->IsDiscrete() ) {
mapTri.mergeGroup = (void *)surface;
}
for ( int j = 0 ; j < tri->numVerts ; j += 3 ) {
idVec3 v = tri->verts[j].xyz * axis + origin;
GetHashVert( v );
}
}
}
}
// now fix each area
for ( areaNum = 0 ; areaNum < e->numAreas ; areaNum++ ) {
for ( group = e->areas[areaNum].groups ; group ; group = group->nextGroup ) {
// don't touch discrete surfaces
if ( group->material != NULL && group->material->IsDiscrete() ) {
continue;
}
mapTri_t *newList = NULL;
for ( mapTri_t *tri = group->triList ; tri ; tri = tri->next ) {
mapTri_t *fixed = FixTriangleAgainstHash( tri );
newList = MergeTriLists( newList, fixed );
}
FreeTriList( group->triList );
group->triList = newList;
}
}
// done
FreeTJunctionHash();
}
/*
============
idFrustum::ProjectionBounds
============
*/
bool idFrustum::ProjectionBounds( const idBox &box, idBounds &projectionBounds ) const
{
int i, p1, p2, pointCull[8], culled, outside;
float scale1, scale2;
idFrustum localFrustum;
idVec3 points[8], localOrigin;
idMat3 localAxis, localScaled;
idBounds bounds( -box.GetExtents(), box.GetExtents() );
// if the frustum origin is inside the bounds
if( bounds.ContainsPoint( ( origin - box.GetCenter() ) * box.GetAxis().Transpose() ) )
{
// bounds that cover the whole frustum
float boxMin, boxMax, base;
base = origin * axis[0];
box.AxisProjection( axis[0], boxMin, boxMax );
projectionBounds[0].x = boxMin - base;
projectionBounds[1].x = boxMax - base;
projectionBounds[0].y = projectionBounds[0].z = -1.0f;
projectionBounds[1].y = projectionBounds[1].z = 1.0f;
return true;
}
projectionBounds.Clear();
// transform the bounds into the space of this frustum
localOrigin = ( box.GetCenter() - origin ) * axis.Transpose();
localAxis = box.GetAxis() * axis.Transpose();
BoxToPoints( localOrigin, box.GetExtents(), localAxis, points );
// test outer four edges of the bounds
culled = -1;
outside = 0;
for( i = 0; i < 4; i++ )
{
p1 = i;
p2 = 4 + i;
AddLocalLineToProjectionBoundsSetCull( points[p1], points[p2], pointCull[p1], pointCull[p2], projectionBounds );
culled &= pointCull[p1] & pointCull[p2];
outside |= pointCull[p1] | pointCull[p2];
}
// if the bounds are completely outside this frustum
if( culled )
{
return false;
}
// if the bounds are completely inside this frustum
if( !outside )
{
return true;
}
// test the remaining edges of the bounds
for( i = 0; i < 4; i++ )
{
p1 = i;
p2 = ( i + 1 ) & 3;
AddLocalLineToProjectionBoundsUseCull( points[p1], points[p2], pointCull[p1], pointCull[p2], projectionBounds );
}
for( i = 0; i < 4; i++ )
{
p1 = 4 + i;
p2 = 4 + ( ( i + 1 ) & 3 );
AddLocalLineToProjectionBoundsUseCull( points[p1], points[p2], pointCull[p1], pointCull[p2], projectionBounds );
}
// if the bounds extend beyond two or more boundaries of this frustum
if( outside != 1 && outside != 2 && outside != 4 && outside != 8 )
{
localOrigin = ( origin - box.GetCenter() ) * box.GetAxis().Transpose();
localScaled = axis * box.GetAxis().Transpose();
localScaled[0] *= dFar;
localScaled[1] *= dLeft;
localScaled[2] *= dUp;
// test the outer edges of this frustum for intersection with the bounds
if( ( outside & 2 ) && ( outside & 8 ) )
{
BoundsRayIntersection( bounds, localOrigin, localScaled[0] - localScaled[1] - localScaled[2], scale1, scale2 );
if( scale1 <= scale2 && scale1 >= 0.0f )
{
projectionBounds.AddPoint( idVec3( scale1 * dFar, -1.0f, -1.0f ) );
projectionBounds.AddPoint( idVec3( scale2 * dFar, -1.0f, -1.0f ) );
}
}
if( ( outside & 2 ) && ( outside & 4 ) )
{
BoundsRayIntersection( bounds, localOrigin, localScaled[0] - localScaled[1] + localScaled[2], scale1, scale2 );
if( scale1 <= scale2 && scale1 >= 0.0f )
{
projectionBounds.AddPoint( idVec3( scale1 * dFar, -1.0f, 1.0f ) );
projectionBounds.AddPoint( idVec3( scale2 * dFar, -1.0f, 1.0f ) );
}
}
if( ( outside & 1 ) && ( outside & 8 ) )
{
BoundsRayIntersection( bounds, localOrigin, localScaled[0] + localScaled[1] - localScaled[2], scale1, scale2 );
if( scale1 <= scale2 && scale1 >= 0.0f )
{
projectionBounds.AddPoint( idVec3( scale1 * dFar, 1.0f, -1.0f ) );
projectionBounds.AddPoint( idVec3( scale2 * dFar, 1.0f, -1.0f ) );
}
}
if( ( outside & 1 ) && ( outside & 2 ) )
{
BoundsRayIntersection( bounds, localOrigin, localScaled[0] + localScaled[1] + localScaled[2], scale1, scale2 );
if( scale1 <= scale2 && scale1 >= 0.0f )
{
projectionBounds.AddPoint( idVec3( scale1 * dFar, 1.0f, 1.0f ) );
projectionBounds.AddPoint( idVec3( scale2 * dFar, 1.0f, 1.0f ) );
}
}
}
return true;
}
/*
=========================
R_PreciseCullSurface
Check the surface for visibility on a per-triangle basis
for cases when it is going to be VERY expensive to draw (subviews)
If not culled, also returns the bounding box of the surface in
Normalized Device Coordinates, so it can be used to crop the scissor rect.
OPTIMIZE: we could also take exact portal passing into consideration
=========================
*/
bool R_PreciseCullSurface( const drawSurf_t* drawSurf, idBounds& ndcBounds )
{
const srfTriangles_t* tri = drawSurf->frontEndGeo;
unsigned int pointOr = 0;
unsigned int pointAnd = ( unsigned int )~0;
// get an exact bounds of the triangles for scissor cropping
ndcBounds.Clear();
const idJointMat* joints = ( tri->staticModelWithJoints != NULL && r_useGPUSkinning.GetBool() ) ? tri->staticModelWithJoints->jointsInverted : NULL;
for( int i = 0; i < tri->numVerts; i++ )
{
const idVec3 vXYZ = idDrawVert::GetSkinnedDrawVertPosition( tri->verts[i], joints );
idPlane eye, clip;
R_TransformModelToClip( vXYZ, drawSurf->space->modelViewMatrix, tr.viewDef->projectionMatrix, eye, clip );
unsigned int pointFlags = 0;
for( int j = 0; j < 3; j++ )
{
if( clip[j] >= clip[3] )
{
pointFlags |= ( 1 << ( j * 2 + 0 ) );
}
else if( clip[j] <= -clip[3] ) // FIXME: the D3D near clip plane is at zero instead of -1
{
pointFlags |= ( 1 << ( j * 2 + 1 ) );
}
}
pointAnd &= pointFlags;
pointOr |= pointFlags;
}
// trivially reject
if( pointAnd != 0 )
{
return true;
}
// backface and frustum cull
idVec3 localViewOrigin;
R_GlobalPointToLocal( drawSurf->space->modelMatrix, tr.viewDef->renderView.vieworg, localViewOrigin );
for( int i = 0; i < tri->numIndexes; i += 3 )
{
const idVec3 v1 = idDrawVert::GetSkinnedDrawVertPosition( tri->verts[ tri->indexes[ i + 0 ] ], joints );
const idVec3 v2 = idDrawVert::GetSkinnedDrawVertPosition( tri->verts[ tri->indexes[ i + 1 ] ], joints );
const idVec3 v3 = idDrawVert::GetSkinnedDrawVertPosition( tri->verts[ tri->indexes[ i + 2 ] ], joints );
// this is a hack, because R_GlobalPointToLocal doesn't work with the non-normalized
// axis that we get from the gui view transform. It doesn't hurt anything, because
// we know that all gui generated surfaces are front facing
if( tr.guiRecursionLevel == 0 )
{
// we don't care that it isn't normalized,
// all we want is the sign
const idVec3 d1 = v2 - v1;
const idVec3 d2 = v3 - v1;
const idVec3 normal = d2.Cross( d1 );
const idVec3 dir = v1 - localViewOrigin;
const float dot = normal * dir;
if( dot >= 0.0f )
{
return true;
}
}
// now find the exact screen bounds of the clipped triangle
idFixedWinding w;
w.SetNumPoints( 3 );
R_LocalPointToGlobal( drawSurf->space->modelMatrix, v1, w[0].ToVec3() );
R_LocalPointToGlobal( drawSurf->space->modelMatrix, v2, w[1].ToVec3() );
R_LocalPointToGlobal( drawSurf->space->modelMatrix, v3, w[2].ToVec3() );
w[0].s = w[0].t = w[1].s = w[1].t = w[2].s = w[2].t = 0.0f;
for( int j = 0; j < 4; j++ )
{
if( !w.ClipInPlace( -tr.viewDef->frustums[FRUSTUM_PRIMARY][j], 0.1f ) )
{
break;
}
}
for( int j = 0; j < w.GetNumPoints(); j++ )
{
idVec3 screen;
R_GlobalToNormalizedDeviceCoordinates( w[j].ToVec3(), screen );
ndcBounds.AddPoint( screen );
}
}
// if we don't enclose any area, return
if( ndcBounds.IsCleared() )
{
return true;
}
return false;
}
