bool HWPlaneMirrorPortal::Setup(HWDrawInfo *di, FRenderState &rstate, Clipper *clipper)
{
auto state = mState;
if (state->renderdepth > r_mirror_recursions)
{
return false;
}
// A plane mirror needs to flip the portal exclusion logic because inside the mirror, up is down and down is up.
std::swap(screen->instack[sector_t::floor], screen->instack[sector_t::ceiling]);
auto &vp = di->Viewpoint;
old_pm = state->PlaneMirrorMode;
// the player is always visible in a mirror.
vp.showviewer = true;
double planez = origin->ZatPoint(vp.Pos);
vp.Pos.Z = 2 * planez - vp.Pos.Z;
vp.ViewActor = nullptr;
state->PlaneMirrorMode = origin->fC() < 0 ? -1 : 1;
state->PlaneMirrorFlag++;
di->SetClipHeight(planez, state->PlaneMirrorMode < 0 ? -1.f : 1.f);
di->SetupView(rstate, vp.Pos.X, vp.Pos.Y, vp.Pos.Z, !!(state->MirrorFlag & 1), !!(state->PlaneMirrorFlag & 1));
ClearClipper(di, clipper);
di->UpdateCurrentMapSection();
return true;
}
void GLPlaneMirrorPortal::DrawContents()
{
if (renderdepth>r_mirror_recursions)
{
ClearScreen();
return;
}
int old_pm=PlaneMirrorMode;
fixed_t planez = origin->ZatPoint(viewx, viewy);
viewz = 2*planez - viewz;
GLRenderer->mViewActor = NULL;
PlaneMirrorMode = ksgn(origin->c);
validcount++;
PlaneMirrorFlag++;
GLRenderer->SetupView(viewx, viewy, viewz, viewangle, !!(MirrorFlag&1), !!(PlaneMirrorFlag&1));
ClearClipper();
glEnable(GL_CLIP_PLANE0+renderdepth);
// This only works properly for non-sloped planes so don't bother with the math.
//double d[4]={origin->a/65536., origin->c/65536., origin->b/65536., FIXED2FLOAT(origin->d)};
double d[4]={0, static_cast<double>(PlaneMirrorMode), 0, FIXED2FLOAT(origin->d)};
glClipPlane(GL_CLIP_PLANE0+renderdepth, d);
GLRenderer->DrawScene();
glDisable(GL_CLIP_PLANE0+renderdepth);
PlaneMirrorFlag--;
PlaneMirrorMode=old_pm;
}
void GLPlaneMirrorPortal::DrawContents()
{
if (renderdepth>r_mirror_recursions)
{
ClearScreen();
return;
}
int old_pm=PlaneMirrorMode;
double planez = origin->ZatPoint(ViewPos);
ViewPos.Z = 2 * planez - ViewPos.Z;
GLRenderer->mViewActor = NULL;
PlaneMirrorMode = origin->fC() < 0 ? -1 : 1;
PlaneMirrorFlag++;
GLRenderer->SetupView(ViewPos.X, ViewPos.Y, ViewPos.Z, ViewAngle, !!(MirrorFlag&1), !!(PlaneMirrorFlag&1));
ClearClipper();
gl_RenderState.SetClipHeight(planez, PlaneMirrorMode < 0? -1.f : 1.f);
GLRenderer->DrawScene(DM_PORTAL);
gl_RenderState.SetClipHeight(0.f, 0.f);
PlaneMirrorFlag--;
PlaneMirrorMode=old_pm;
}
//-----------------------------------------------------------------------------
//
// GLSectorStackPortal::DrawContents
//
//-----------------------------------------------------------------------------
bool HWSectorStackPortal::Setup(HWDrawInfo *di, FRenderState &rstate, Clipper *clipper)
{
auto state = mState;
FSectorPortalGroup *portal = origin;
auto &vp = di->Viewpoint;
vp.Pos += origin->mDisplacement;
vp.ActorPos += origin->mDisplacement;
vp.ViewActor = nullptr;
// avoid recursions!
if (origin->plane != -1) screen->instack[origin->plane]++;
di->SetupView(rstate, vp.Pos.X, vp.Pos.Y, vp.Pos.Z, !!(state->MirrorFlag & 1), !!(state->PlaneMirrorFlag & 1));
SetupCoverage(di);
ClearClipper(di, clipper);
// If the viewpoint is not within the portal, we need to invalidate the entire clip area.
// The portal will re-validate the necessary parts when its subsectors get traversed.
subsector_t *sub = di->Level->PointInRenderSubsector(vp.Pos);
if (!(di->ss_renderflags[sub->Index()] & SSRF_SEEN))
{
clipper->SafeAddClipRange(0, ANGLE_MAX);
clipper->SetBlocked(true);
}
return true;
}
//-----------------------------------------------------------------------------
//
// GLSectorStackPortal::DrawContents
//
//-----------------------------------------------------------------------------
void GLSectorStackPortal::DrawContents()
{
FPortal *portal = origin;
ViewPos += origin->mDisplacement;
GLRenderer->mViewActor = NULL;
// avoid recursions!
if (origin->plane != -1) instack[origin->plane]++;
GLRenderer->SetupView(ViewPos.X, ViewPos.Y, ViewPos.Z, ViewAngle, !!(MirrorFlag&1), !!(PlaneMirrorFlag&1));
SaveMapSection();
SetupCoverage();
ClearClipper();
// If the viewpoint is not within the portal, we need to invalidate the entire clip area.
// The portal will re-validate the necessary parts when its subsectors get traversed.
subsector_t *sub = R_PointInSubsector(ViewPos);
if (!(gl_drawinfo->ss_renderflags[sub - ::subsectors] & SSRF_SEEN))
{
clipper.SafeAddClipRange(0, ANGLE_MAX);
clipper.SetBlocked(true);
}
GLRenderer->DrawScene(DM_PORTAL);
RestoreMapSection();
if (origin->plane != -1) instack[origin->plane]--;
}
//-----------------------------------------------------------------------------
//
//
//
//-----------------------------------------------------------------------------
void GLLineToLinePortal::DrawContents()
{
// TODO: Handle recursion more intelligently
if (renderdepth>r_mirror_recursions)
{
ClearScreen();
return;
}
GLRenderer->mClipPortal = this;
line_t *origin = glport->lines[0]->mOrigin;
P_TranslatePortalXY(origin, ViewPos.X, ViewPos.Y);
P_TranslatePortalAngle(origin, ViewAngle);
P_TranslatePortalZ(origin, ViewPos.Z);
P_TranslatePortalXY(origin, ViewPath[0].X, ViewPath[0].Y);
P_TranslatePortalXY(origin, ViewPath[1].X, ViewPath[1].Y);
if (!r_showviewer && camera != nullptr && P_PointOnLineSidePrecise(ViewPath[0], glport->lines[0]->mDestination) != P_PointOnLineSidePrecise(ViewPath[1], glport->lines[0]->mDestination))
{
double distp = (ViewPath[0] - ViewPath[1]).Length();
if (distp > EQUAL_EPSILON)
{
double dist1 = (ViewPos - ViewPath[0]).Length();
double dist2 = (ViewPos - ViewPath[1]).Length();
if (dist1 + dist2 < distp + 1)
{
camera->renderflags |= RF_INVISIBLE;
}
}
}
SaveMapSection();
for (unsigned i = 0; i < lines.Size(); i++)
{
line_t *line = lines[i].seg->linedef->getPortalDestination();
subsector_t *sub;
if (line->sidedef[0]->Flags & WALLF_POLYOBJ)
sub = R_PointInSubsector(line->v1->fixX(), line->v1->fixY());
else sub = line->frontsector->subsectors[0];
int mapsection = sub->mapsection;
currentmapsection[mapsection >> 3] |= 1 << (mapsection & 7);
}
GLRenderer->mViewActor = nullptr;
GLRenderer->SetupView(ViewPos.X, ViewPos.Y, ViewPos.Z, ViewAngle, !!(MirrorFlag&1), !!(PlaneMirrorFlag&1));
ClearClipper();
gl_RenderState.SetClipLine(glport->lines[0]->mDestination);
gl_RenderState.EnableClipLine(true);
GLRenderer->DrawScene(DM_PORTAL);
gl_RenderState.EnableClipLine(false);
RestoreMapSection();
}
void GLSkyboxPortal::DrawContents()
{
int old_pm=PlaneMirrorMode;
int saved_extralight = extralight;
if (skyboxrecursion>=3)
{
ClearScreen();
return;
}
skyboxrecursion++;
origin->flags|=MF_JUSTHIT;
extralight = 0;
PlaneMirrorMode=0;
glDisable(GL_DEPTH_CLAMP_NV);
viewx = origin->PrevX + FixedMul(r_TicFrac, origin->x - origin->PrevX);
viewy = origin->PrevY + FixedMul(r_TicFrac, origin->y - origin->PrevY);
viewz = origin->PrevZ + FixedMul(r_TicFrac, origin->z - origin->PrevZ);
viewangle += origin->PrevAngle + FixedMul(r_TicFrac, origin->angle - origin->PrevAngle);
// Don't let the viewpoint be too close to a floor or ceiling!
fixed_t floorh = origin->Sector->floorplane.ZatPoint(origin->x, origin->y);
fixed_t ceilh = origin->Sector->ceilingplane.ZatPoint(origin->x, origin->y);
if (viewz<floorh+4*FRACUNIT) viewz=floorh+4*FRACUNIT;
if (viewz>ceilh-4*FRACUNIT) viewz=ceilh-4*FRACUNIT;
GLRenderer->mViewActor = origin;
validcount++;
inskybox=true;
GLRenderer->SetupView(viewx, viewy, viewz, viewangle, !!(MirrorFlag&1), !!(PlaneMirrorFlag&1));
GLRenderer->SetViewArea();
ClearClipper();
int mapsection = R_PointInSubsector(viewx, viewy)->mapsection;
SaveMapSection();
currentmapsection[mapsection>>3] |= 1 << (mapsection & 7);
GLRenderer->DrawScene();
origin->flags&=~MF_JUSTHIT;
inskybox=false;
glEnable(GL_DEPTH_CLAMP_NV);
skyboxrecursion--;
PlaneMirrorMode=old_pm;
extralight = saved_extralight;
RestoreMapSection();
}
//-----------------------------------------------------------------------------
//
//
//
//-----------------------------------------------------------------------------
bool HWLineToLinePortal::Setup(HWDrawInfo *di, FRenderState &rstate, Clipper *clipper)
{
// TODO: Handle recursion more intelligently
auto &state = mState;
if (state->renderdepth>r_mirror_recursions)
{
return false;
}
auto &vp = di->Viewpoint;
di->mClipPortal = this;
line_t *origin = glport->lines[0]->mOrigin;
P_TranslatePortalXY(origin, vp.Pos.X, vp.Pos.Y);
P_TranslatePortalXY(origin, vp.ActorPos.X, vp.ActorPos.Y);
P_TranslatePortalAngle(origin, vp.Angles.Yaw);
P_TranslatePortalZ(origin, vp.Pos.Z);
P_TranslatePortalXY(origin, vp.Path[0].X, vp.Path[0].Y);
P_TranslatePortalXY(origin, vp.Path[1].X, vp.Path[1].Y);
if (!vp.showviewer && vp.camera != nullptr && P_PointOnLineSidePrecise(vp.Path[0], glport->lines[0]->mDestination) != P_PointOnLineSidePrecise(vp.Path[1], glport->lines[0]->mDestination))
{
double distp = (vp.Path[0] - vp.Path[1]).Length();
if (distp > EQUAL_EPSILON)
{
double dist1 = (vp.Pos - vp.Path[0]).Length();
double dist2 = (vp.Pos - vp.Path[1]).Length();
if (dist1 + dist2 < distp + 1)
{
vp.camera->renderflags |= RF_MAYBEINVISIBLE;
}
}
}
for (unsigned i = 0; i < lines.Size(); i++)
{
line_t *line = lines[i].seg->linedef->getPortalDestination();
subsector_t *sub;
if (line->sidedef[0]->Flags & WALLF_POLYOBJ)
sub = di->Level->PointInRenderSubsector(line->v1->fixX(), line->v1->fixY());
else sub = line->frontsector->subsectors[0];
di->CurrentMapSections.Set(sub->mapsection);
}
vp.ViewActor = nullptr;
di->SetClipLine(glport->lines[0]->mDestination);
di->SetupView(rstate, vp.Pos.X, vp.Pos.Y, vp.Pos.Z, !!(state->MirrorFlag & 1), !!(state->PlaneMirrorFlag & 1));
ClearClipper(di, clipper);
return true;
}
void GLSkyboxPortal::DrawContents()
{
int old_pm = PlaneMirrorMode;
int saved_extralight = extralight;
if (skyboxrecursion >= 3)
{
ClearScreen();
return;
}
skyboxrecursion++;
AActor *origin = portal->mSkybox;
portal->mFlags |= PORTSF_INSKYBOX;
extralight = 0;
PlaneMirrorMode = 0;
bool oldclamp = gl_RenderState.SetDepthClamp(false);
ViewPos = origin->InterpolatedPosition(r_TicFracF);
ViewAngle += (origin->PrevAngles.Yaw + deltaangle(origin->PrevAngles.Yaw, origin->Angles.Yaw) * r_TicFracF);
// Don't let the viewpoint be too close to a floor or ceiling
double floorh = origin->Sector->floorplane.ZatPoint(origin->Pos());
double ceilh = origin->Sector->ceilingplane.ZatPoint(origin->Pos());
if (ViewPos.Z < floorh + 4) ViewPos.Z = floorh + 4;
if (ViewPos.Z > ceilh - 4) ViewPos.Z = ceilh - 4;
GLRenderer->mViewActor = origin;
inskybox = true;
GLRenderer->SetupView(ViewPos.X, ViewPos.Y, ViewPos.Z, ViewAngle, !!(MirrorFlag & 1), !!(PlaneMirrorFlag & 1));
GLRenderer->SetViewArea();
ClearClipper();
int mapsection = R_PointInSubsector(ViewPos)->mapsection;
SaveMapSection();
currentmapsection[mapsection >> 3] |= 1 << (mapsection & 7);
GLRenderer->DrawScene(DM_PORTAL);
portal->mFlags &= ~PORTSF_INSKYBOX;
inskybox = false;
gl_RenderState.SetDepthClamp(oldclamp);
skyboxrecursion--;
PlaneMirrorMode = old_pm;
extralight = saved_extralight;
RestoreMapSection();
}
bool HWSkyboxPortal::Setup(HWDrawInfo *di, FRenderState &rstate, Clipper *clipper)
{
auto state = mState;
old_pm = state->PlaneMirrorMode;
if (mState->skyboxrecursion >= 3)
{
return false;
}
auto &vp = di->Viewpoint;
state->skyboxrecursion++;
state->PlaneMirrorMode = 0;
state->inskybox = true;
AActor *origin = portal->mSkybox;
portal->mFlags |= PORTSF_INSKYBOX;
vp.extralight = 0;
oldclamp = rstate.SetDepthClamp(false);
vp.Pos = origin->InterpolatedPosition(vp.TicFrac);
vp.ActorPos = origin->Pos();
vp.Angles.Yaw += (origin->PrevAngles.Yaw + deltaangle(origin->PrevAngles.Yaw, origin->Angles.Yaw) * vp.TicFrac);
// Don't let the viewpoint be too close to a floor or ceiling
double floorh = origin->Sector->floorplane.ZatPoint(origin->Pos());
double ceilh = origin->Sector->ceilingplane.ZatPoint(origin->Pos());
if (vp.Pos.Z < floorh + 4) vp.Pos.Z = floorh + 4;
if (vp.Pos.Z > ceilh - 4) vp.Pos.Z = ceilh - 4;
vp.ViewActor = origin;
di->SetupView(rstate, vp.Pos.X, vp.Pos.Y, vp.Pos.Z, !!(state->MirrorFlag & 1), !!(state->PlaneMirrorFlag & 1));
di->SetViewArea();
ClearClipper(di, clipper);
di->UpdateCurrentMapSection();
return true;
}
//-----------------------------------------------------------------------------
//
// GLSectorStackPortal::DrawContents
//
//-----------------------------------------------------------------------------
void GLSectorStackPortal::DrawContents()
{
FPortal *portal = origin;
viewx += origin->xDisplacement;
viewy += origin->yDisplacement;
GLRenderer->mViewActor = NULL;
GLRenderer->mCurrentPortal = this;
validcount++;
// avoid recursions!
if (origin->plane != -1) instack[origin->plane]++;
GLRenderer->SetupView(viewx, viewy, viewz, viewangle, !!(MirrorFlag&1), !!(PlaneMirrorFlag&1));
SaveMapSection();
SetupCoverage();
ClearClipper();
GLRenderer->DrawScene();
RestoreMapSection();
if (origin->plane != -1) instack[origin->plane]--;
}
