void FGLRenderer::SetViewAngle(DAngle viewangle)
{
mAngles.Yaw = float(270.0-viewangle.Degrees);
DVector2 v = ViewAngle.ToVector();
mViewVector.X = v.X;
mViewVector.Y = v.Y;
R_SetViewAngle();
}
// Draws any recorded sky boxes and then frees them.
//
// The process:
// 1. Move the camera to coincide with the SkyViewpoint.
// 2. Clear out the old planes. (They have already been drawn.)
// 3. Clear a window out of the ClipSegs just large enough for the plane.
// 4. Pretend the existing vissprites and drawsegs aren't there.
// 5. Create a drawseg at 0 distance to clip sprites to the visplane. It
// doesn't need to be associated with a line in the map, since there
// will never be any sprites in front of it.
// 6. Render the BSP, then planes, then masked stuff.
// 7. Restore the previous vissprites and drawsegs.
// 8. Repeat for any other sky boxes.
// 9. Put the camera back where it was to begin with.
//
void RenderPortal::RenderPlanePortals()
{
numskyboxes = 0;
VisiblePlaneList *planes = Thread->PlaneList.get();
DrawSegmentList *drawseglist = Thread->DrawSegments.get();
if (!planes->HasPortalPlanes())
return;
Thread->Clip3D->EnterSkybox();
CurrentPortalInSkybox = true;
int savedextralight = Thread->Viewport->viewpoint.extralight;
DVector3 savedpos = Thread->Viewport->viewpoint.Pos;
DRotator savedangles = Thread->Viewport->viewpoint.Angles;
double savedvisibility = Thread->Light->GetVisibility();
AActor *savedcamera = Thread->Viewport->viewpoint.camera;
sector_t *savedsector = Thread->Viewport->viewpoint.sector;
for (VisiblePlane *pl = planes->PopFirstPortalPlane(); pl != nullptr; pl = planes->PopFirstPortalPlane())
{
if (pl->right < pl->left || !r_skyboxes || numskyboxes == MAX_SKYBOX_PLANES || pl->portal == nullptr)
{
pl->Render(Thread, OPAQUE, false, false);
continue;
}
numskyboxes++;
FSectorPortal *port = pl->portal;
switch (port->mType)
{
case PORTS_SKYVIEWPOINT:
{
// Don't let gun flashes brighten the sky box
AActor *sky = port->mSkybox;
Thread->Viewport->viewpoint.extralight = 0;
Thread->Light->SetVisibility(Thread->Viewport.get(), sky->args[0] * 0.25f);
Thread->Viewport->viewpoint.Pos = sky->InterpolatedPosition(Thread->Viewport->viewpoint.TicFrac);
Thread->Viewport->viewpoint.Angles.Yaw = savedangles.Yaw + (sky->PrevAngles.Yaw + deltaangle(sky->PrevAngles.Yaw, sky->Angles.Yaw) * Thread->Viewport->viewpoint.TicFrac);
CopyStackedViewParameters();
break;
}
case PORTS_STACKEDSECTORTHING:
case PORTS_PORTAL:
case PORTS_LINKEDPORTAL:
Thread->Viewport->viewpoint.extralight = pl->extralight;
Thread->Light->SetVisibility(Thread->Viewport.get(), pl->visibility);
Thread->Viewport->viewpoint.Pos.X = pl->viewpos.X + port->mDisplacement.X;
Thread->Viewport->viewpoint.Pos.Y = pl->viewpos.Y + port->mDisplacement.Y;
Thread->Viewport->viewpoint.Pos.Z = pl->viewpos.Z;
Thread->Viewport->viewpoint.Angles.Yaw = pl->viewangle;
break;
case PORTS_HORIZON:
case PORTS_PLANE:
// not implemented yet
default:
pl->Render(Thread, OPAQUE, false, false);
numskyboxes--;
continue;
}
SetInSkyBox(port);
if (port->mPartner > 0) SetInSkyBox(&level.sectorPortals[port->mPartner]);
Thread->Viewport->viewpoint.camera = nullptr;
Thread->Viewport->viewpoint.sector = port->mDestination;
assert(Thread->Viewport->viewpoint.sector != nullptr);
R_SetViewAngle(Thread->Viewport->viewpoint, Thread->Viewport->viewwindow);
Thread->OpaquePass->ClearSeenSprites();
Thread->Clip3D->ClearFakeFloors();
planes->ClearKeepFakePlanes();
Thread->ClipSegments->Clear(pl->left, pl->right);
WindowLeft = pl->left;
WindowRight = pl->right;
auto ceilingclip = Thread->OpaquePass->ceilingclip;
auto floorclip = Thread->OpaquePass->floorclip;
for (int i = pl->left; i < pl->right; i++)
{
if (pl->top[i] == 0x7fff)
{
ceilingclip[i] = viewheight;
floorclip[i] = -1;
}
else
{
ceilingclip[i] = pl->top[i];
floorclip[i] = pl->bottom[i];
}
}
drawseglist->PushPortal();
Thread->SpriteList->PushPortal();
viewposStack.Push(Thread->Viewport->viewpoint.Pos);
visplaneStack.Push(pl);
// Create a drawseg to clip sprites to the sky plane
DrawSegment *draw_segment = Thread->FrameMemory->NewObject<DrawSegment>();
draw_segment->CurrentPortalUniq = CurrentPortalUniq;
draw_segment->siz1 = INT_MAX;
draw_segment->siz2 = INT_MAX;
draw_segment->sz1 = 0;
draw_segment->sz2 = 0;
draw_segment->x1 = pl->left;
draw_segment->x2 = pl->right;
draw_segment->silhouette = SIL_BOTH;
draw_segment->sprbottomclip = Thread->FrameMemory->AllocMemory<short>(pl->right - pl->left);
draw_segment->sprtopclip = Thread->FrameMemory->AllocMemory<short>(pl->right - pl->left);
draw_segment->maskedtexturecol = nullptr;
draw_segment->swall = nullptr;
draw_segment->bFogBoundary = false;
draw_segment->curline = nullptr;
draw_segment->foggy = false;
memcpy(draw_segment->sprbottomclip, floorclip + pl->left, (pl->right - pl->left) * sizeof(short));
memcpy(draw_segment->sprtopclip, ceilingclip + pl->left, (pl->right - pl->left) * sizeof(short));
drawseglist->Push(draw_segment);
Thread->OpaquePass->RenderScene();
Thread->Clip3D->ResetClip(); // reset clips (floor/ceiling)
planes->Render();
ClearInSkyBox(port);
if (port->mPartner > 0) SetInSkyBox(&level.sectorPortals[port->mPartner]);
}
// Draw all the masked textures in a second pass, in the reverse order they
// were added. This must be done separately from the previous step for the
// sake of nested skyboxes.
while (viewposStack.Size() > 0)
{
// Masked textures and planes need the view coordinates restored for proper positioning.
viewposStack.Pop(Thread->Viewport->viewpoint.Pos);
Thread->TranslucentPass->Render();
VisiblePlane *pl = nullptr; // quiet, GCC!
visplaneStack.Pop(pl);
if (pl->Alpha > 0 && pl->picnum != skyflatnum)
{
pl->Render(Thread, pl->Alpha, pl->Additive, true);
}
Thread->SpriteList->PopPortal();
drawseglist->PopPortal();
}
Thread->Viewport->viewpoint.camera = savedcamera;
Thread->Viewport->viewpoint.sector = savedsector;
Thread->Viewport->viewpoint.Pos = savedpos;
Thread->Light->SetVisibility(Thread->Viewport.get(), savedvisibility);
Thread->Viewport->viewpoint.extralight = savedextralight;
Thread->Viewport->viewpoint.Angles = savedangles;
R_SetViewAngle(Thread->Viewport->viewpoint, Thread->Viewport->viewwindow);
CurrentPortalInSkybox = false;
Thread->Clip3D->LeaveSkybox();
if (Thread->Clip3D->fakeActive) return;
planes->ClearPortalPlanes();
}
void R_DrawPortals ()
{
static TArray<size_t> interestingStack;
static TArray<ptrdiff_t> drawsegStack;
static TArray<ptrdiff_t> visspriteStack;
static TArray<DVector3> viewposStack;
static TArray<visplane_t *> visplaneStack;
numskyboxes = 0;
if (visplanes[MAXVISPLANES] == NULL)
return;
R_3D_EnterSkybox();
CurrentPortalInSkybox = true;
int savedextralight = extralight;
DVector3 savedpos = ViewPos;
DAngle savedangle = ViewAngle;
ptrdiff_t savedvissprite_p = vissprite_p - vissprites;
ptrdiff_t savedds_p = ds_p - drawsegs;
ptrdiff_t savedlastopening = lastopening;
size_t savedinteresting = FirstInterestingDrawseg;
double savedvisibility = R_GetVisibility();
AActor *savedcamera = camera;
sector_t *savedsector = viewsector;
int i;
visplane_t *pl;
for (pl = visplanes[MAXVISPLANES]; pl != NULL; pl = visplanes[MAXVISPLANES])
{
// Pop the visplane off the list now so that if this skybox adds more
// skyboxes to the list, they will be drawn instead of skipped (because
// new skyboxes go to the beginning of the list instead of the end).
visplanes[MAXVISPLANES] = pl->next;
pl->next = NULL;
if (pl->right < pl->left || !r_skyboxes || numskyboxes == MAX_SKYBOX_PLANES || pl->portal == NULL)
{
R_DrawSinglePlane (pl, OPAQUE, false, false);
*freehead = pl;
freehead = &pl->next;
continue;
}
numskyboxes++;
FSectorPortal *port = pl->portal;
switch (port->mType)
{
case PORTS_SKYVIEWPOINT:
{
// Don't let gun flashes brighten the sky box
ASkyViewpoint *sky = barrier_cast<ASkyViewpoint*>(port->mSkybox);
extralight = 0;
R_SetVisibility(sky->args[0] * 0.25f);
ViewPos = sky->InterpolatedPosition(r_TicFracF);
ViewAngle = savedangle + (sky->PrevAngles.Yaw + deltaangle(sky->PrevAngles.Yaw, sky->Angles.Yaw) * r_TicFracF);
R_CopyStackedViewParameters();
break;
}
case PORTS_STACKEDSECTORTHING:
case PORTS_PORTAL:
case PORTS_LINKEDPORTAL:
extralight = pl->extralight;
R_SetVisibility (pl->visibility);
ViewPos.X = pl->viewpos.X + port->mDisplacement.X;
ViewPos.Y = pl->viewpos.Y + port->mDisplacement.Y;
ViewPos.Z = pl->viewpos.Z;
ViewAngle = pl->viewangle;
break;
case PORTS_HORIZON:
case PORTS_PLANE:
// not implemented yet
default:
R_DrawSinglePlane(pl, OPAQUE, false, false);
*freehead = pl;
freehead = &pl->next;
numskyboxes--;
continue;
}
port->mFlags |= PORTSF_INSKYBOX;
if (port->mPartner > 0) sectorPortals[port->mPartner].mFlags |= PORTSF_INSKYBOX;
camera = NULL;
viewsector = port->mDestination;
assert(viewsector != NULL);
R_SetViewAngle ();
validcount++; // Make sure we see all sprites
R_ClearPlanes (false);
R_ClearClipSegs (pl->left, pl->right);
WindowLeft = pl->left;
WindowRight = pl->right;
for (i = pl->left; i < pl->right; i++)
{
if (pl->top[i] == 0x7fff)
{
ceilingclip[i] = viewheight;
floorclip[i] = -1;
}
else
{
ceilingclip[i] = pl->top[i];
floorclip[i] = pl->bottom[i];
}
}
// Create a drawseg to clip sprites to the sky plane
R_CheckDrawSegs ();
ds_p->CurrentPortalUniq = CurrentPortalUniq;
ds_p->siz1 = INT_MAX;
ds_p->siz2 = INT_MAX;
ds_p->sz1 = 0;
ds_p->sz2 = 0;
ds_p->x1 = pl->left;
ds_p->x2 = pl->right;
ds_p->silhouette = SIL_BOTH;
ds_p->sprbottomclip = R_NewOpening (pl->right - pl->left);
ds_p->sprtopclip = R_NewOpening (pl->right - pl->left);
ds_p->maskedtexturecol = ds_p->swall = -1;
ds_p->bFogBoundary = false;
ds_p->curline = NULL;
ds_p->fake = 0;
memcpy (openings + ds_p->sprbottomclip, floorclip + pl->left, (pl->right - pl->left)*sizeof(short));
memcpy (openings + ds_p->sprtopclip, ceilingclip + pl->left, (pl->right - pl->left)*sizeof(short));
firstvissprite = vissprite_p;
firstdrawseg = ds_p++;
FirstInterestingDrawseg = InterestingDrawsegs.Size();
interestingStack.Push (FirstInterestingDrawseg);
ptrdiff_t diffnum = firstdrawseg - drawsegs;
drawsegStack.Push (diffnum);
diffnum = firstvissprite - vissprites;
visspriteStack.Push (diffnum);
viewposStack.Push(ViewPos);
visplaneStack.Push (pl);
InSubsector = NULL;
R_RenderBSPNode (nodes + numnodes - 1);
R_3D_ResetClip(); // reset clips (floor/ceiling)
R_DrawPlanes ();
port->mFlags &= ~PORTSF_INSKYBOX;
if (port->mPartner > 0) sectorPortals[port->mPartner].mFlags &= ~PORTSF_INSKYBOX;
}
// Draw all the masked textures in a second pass, in the reverse order they
// were added. This must be done separately from the previous step for the
// sake of nested skyboxes.
while (interestingStack.Pop (FirstInterestingDrawseg))
{
ptrdiff_t pd = 0;
drawsegStack.Pop (pd);
firstdrawseg = drawsegs + pd;
visspriteStack.Pop (pd);
firstvissprite = vissprites + pd;
// Masked textures and planes need the view coordinates restored for proper positioning.
viewposStack.Pop(ViewPos);
R_DrawMasked ();
ds_p = firstdrawseg;
vissprite_p = firstvissprite;
visplaneStack.Pop (pl);
if (pl->Alpha > 0 && pl->picnum != skyflatnum)
{
R_DrawSinglePlane (pl, pl->Alpha, pl->Additive, true);
}
*freehead = pl;
freehead = &pl->next;
}
firstvissprite = vissprites;
vissprite_p = vissprites + savedvissprite_p;
firstdrawseg = drawsegs;
ds_p = drawsegs + savedds_p;
InterestingDrawsegs.Resize ((unsigned int)FirstInterestingDrawseg);
FirstInterestingDrawseg = savedinteresting;
lastopening = savedlastopening;
camera = savedcamera;
viewsector = savedsector;
ViewPos = savedpos;
R_SetVisibility(savedvisibility);
extralight = savedextralight;
ViewAngle = savedangle;
R_SetViewAngle ();
CurrentPortalInSkybox = false;
R_3D_LeaveSkybox();
if(fakeActive) return;
for (*freehead = visplanes[MAXVISPLANES], visplanes[MAXVISPLANES] = NULL; *freehead; )
freehead = &(*freehead)->next;
}
