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Move portal drawing to r_portal

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This commit is contained in:
Magnus Norddahl 2016-12-30 06:08:47 +01:00
parent 60c0dcc3c7
commit 41d0e7c663
10 changed files with 569 additions and 503 deletions
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1
src/CMakeLists.txt
View file

@ -824,6 +824,7 @@ set( FASTMATH_PCH_SOURCES
swrenderer/scene/r_clip_segment.cpp
swrenderer/scene/r_draw_segment.cpp
swrenderer/scene/r_portal_segment.cpp
swrenderer/scene/r_portal.cpp
polyrenderer/poly_renderer.cpp
polyrenderer/scene/poly_scene.cpp
polyrenderer/scene/poly_portal.cpp

2
src/r_utility.h
View file

@ -44,6 +44,8 @@ extern unsigned int R_OldBlend;
const double r_Yaspect = 200.0; // Why did I make this a variable? It's never set anywhere.
extern bool r_showviewer;
//==========================================================================
//
// R_PointOnSide

259
src/swrenderer/r_main.cpp
View file

@ -44,6 +44,7 @@
#include "scene/r_clip_segment.h"
#include "scene/r_segs.h"
#include "scene/r_3dfloors.h"
#include "scene/r_portal.h"
#include "r_sky.h"
#include "drawers/r_draw_rgba.h"
#include "st_stuff.h"
@ -70,16 +71,8 @@
CVAR (String, r_viewsize, "", CVAR_NOSET)
CVAR (Bool, r_shadercolormaps, true, CVAR_ARCHIVE)
CVAR(Int, r_portal_recursions, 4, CVAR_ARCHIVE)
CVAR(Bool, r_highlight_portals, false, CVAR_ARCHIVE)
EXTERN_CVAR(Bool, r_fullbrightignoresectorcolor)
extern cycle_t WallCycles, PlaneCycles, MaskedCycles, WallScanCycles;
extern cycle_t FrameCycles;
extern bool r_showviewer;
namespace swrenderer
{
@ -539,245 +532,6 @@ void R_SetupFreelook()
}
}
//==========================================================================
//
// R_EnterPortal
//
// [RH] Draw the reflection inside a mirror
// [ZZ] Merged with portal code, originally called R_EnterMirror
//
//==========================================================================
void R_HighlightPortal (PortalDrawseg* pds)
{
// [ZZ] NO OVERFLOW CHECKS HERE
// I believe it won't break. if it does, blame me. :(
if (r_swtruecolor) // Assuming this is just a debug function
return;
BYTE color = (BYTE)BestColor((DWORD *)GPalette.BaseColors, 255, 0, 0, 0, 255);
BYTE* pixels = RenderTarget->GetBuffer();
// top edge
for (int x = pds->x1; x < pds->x2; x++)
{
if (x < 0 || x >= RenderTarget->GetWidth())
continue;
int p = x - pds->x1;
int Ytop = pds->ceilingclip[p];
int Ybottom = pds->floorclip[p];
if (x == pds->x1 || x == pds->x2-1)
{
RenderTarget->DrawLine(x, Ytop, x, Ybottom+1, color, 0);
continue;
}
int YtopPrev = pds->ceilingclip[p-1];
int YbottomPrev = pds->floorclip[p-1];
if (abs(Ytop-YtopPrev) > 1)
RenderTarget->DrawLine(x, YtopPrev, x, Ytop, color, 0);
else *(pixels + Ytop * RenderTarget->GetPitch() + x) = color;
if (abs(Ybottom-YbottomPrev) > 1)
RenderTarget->DrawLine(x, YbottomPrev, x, Ybottom, color, 0);
else *(pixels + Ybottom * RenderTarget->GetPitch() + x) = color;
}
}
void R_EnterPortal (PortalDrawseg* pds, int depth)
{
// [ZZ] check depth. fill portal with black if it's exceeding the visual recursion limit, and continue like nothing happened.
if (depth >= r_portal_recursions)
{
BYTE color = (BYTE)BestColor((DWORD *)GPalette.BaseColors, 0, 0, 0, 0, 255);
int spacing = RenderTarget->GetPitch();
for (int x = pds->x1; x < pds->x2; x++)
{
if (x < 0 || x >= RenderTarget->GetWidth())
continue;
int Ytop = pds->ceilingclip[x-pds->x1];
int Ybottom = pds->floorclip[x-pds->x1];
if (r_swtruecolor)
{
uint32_t *dest = (uint32_t*)RenderTarget->GetBuffer() + x + Ytop * spacing;
uint32_t c = GPalette.BaseColors[color].d;
for (int y = Ytop; y <= Ybottom; y++)
{
*dest = c;
dest += spacing;
}
}
else
{
BYTE *dest = RenderTarget->GetBuffer() + x + Ytop * spacing;
for (int y = Ytop; y <= Ybottom; y++)
{
*dest = color;
dest += spacing;
}
}
}
if (r_highlight_portals)
R_HighlightPortal(pds);
return;
}
DAngle startang = ViewAngle;
DVector3 startpos = ViewPos;
DVector3 savedpath[2] = { ViewPath[0], ViewPath[1] };
ActorRenderFlags savedvisibility = camera? camera->renderflags & RF_INVISIBLE : ActorRenderFlags::FromInt(0);
CurrentPortalUniq++;
unsigned int portalsAtStart = WallPortals.Size ();
if (pds->mirror)
{
//vertex_t *v1 = ds->curline->v1;
vertex_t *v1 = pds->src->v1;
// Reflect the current view behind the mirror.
if (pds->src->Delta().X == 0)
{ // vertical mirror
ViewPos.X = v1->fX() - startpos.X + v1->fX();
}
else if (pds->src->Delta().Y == 0)
{ // horizontal mirror
ViewPos.Y = v1->fY() - startpos.Y + v1->fY();
}
else
{ // any mirror
vertex_t *v2 = pds->src->v2;
double dx = v2->fX() - v1->fX();
double dy = v2->fY() - v1->fY();
double x1 = v1->fX();
double y1 = v1->fY();
double x = startpos.X;
double y = startpos.Y;
// the above two cases catch len == 0
double r = ((x - x1)*dx + (y - y1)*dy) / (dx*dx + dy*dy);
ViewPos.X = (x1 + r * dx)*2 - x;
ViewPos.Y = (y1 + r * dy)*2 - y;
}
ViewAngle = pds->src->Delta().Angle() * 2 - startang;
}
else
{
P_TranslatePortalXY(pds->src, ViewPos.X, ViewPos.Y);
P_TranslatePortalZ(pds->src, ViewPos.Z);
P_TranslatePortalAngle(pds->src, ViewAngle);
P_TranslatePortalXY(pds->src, ViewPath[0].X, ViewPath[0].Y);
P_TranslatePortalXY(pds->src, ViewPath[1].X, ViewPath[1].Y);
if (!r_showviewer && camera && P_PointOnLineSidePrecise(ViewPath[0], pds->dst) != P_PointOnLineSidePrecise(ViewPath[1], pds->dst))
{
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;
}
}
}
}
ViewSin = ViewAngle.Sin();
ViewCos = ViewAngle.Cos();
ViewTanSin = FocalTangent * ViewSin;
ViewTanCos = FocalTangent * ViewCos;
R_CopyStackedViewParameters();
validcount++;
PortalDrawseg* prevpds = CurrentPortal;
CurrentPortal = pds;
R_ClearPlanes (false);
R_ClearClipSegs (pds->x1, pds->x2);
WindowLeft = pds->x1;
WindowRight = pds->x2;
// RF_XFLIP should be removed before calling the root function
int prevmf = MirrorFlags;
if (pds->mirror)
{
if (MirrorFlags & RF_XFLIP)
MirrorFlags &= ~RF_XFLIP;
else MirrorFlags |= RF_XFLIP;
}
// some portals have height differences, account for this here
R_3D_EnterSkybox(); // push 3D floor height map
CurrentPortalInSkybox = false; // first portal in a skybox should set this variable to false for proper clipping in skyboxes.
// first pass, set clipping
memcpy (ceilingclip + pds->x1, &pds->ceilingclip[0], pds->len*sizeof(*ceilingclip));
memcpy (floorclip + pds->x1, &pds->floorclip[0], pds->len*sizeof(*floorclip));
InSubsector = NULL;
R_RenderBSPNode (nodes + numnodes - 1);
R_3D_ResetClip(); // reset clips (floor/ceiling)
if (!savedvisibility && camera) camera->renderflags &= ~RF_INVISIBLE;
PlaneCycles.Clock();
R_DrawPlanes ();
R_DrawPortals ();
PlaneCycles.Unclock();
double vzp = ViewPos.Z;
int prevuniq = CurrentPortalUniq;
// depth check is in another place right now
unsigned int portalsAtEnd = WallPortals.Size ();
for (; portalsAtStart < portalsAtEnd; portalsAtStart++)
{
R_EnterPortal (&WallPortals[portalsAtStart], depth + 1);
}
int prevuniq2 = CurrentPortalUniq;
CurrentPortalUniq = prevuniq;
NetUpdate();
MaskedCycles.Clock(); // [ZZ] count sprites in portals/mirrors along with normal ones.
R_DrawMasked (); // this is required since with portals there often will be cases when more than 80% of the view is inside a portal.
MaskedCycles.Unclock();
NetUpdate();
R_3D_LeaveSkybox(); // pop 3D floor height map
CurrentPortalUniq = prevuniq2;
// draw a red line around a portal if it's being highlighted
if (r_highlight_portals)
R_HighlightPortal(pds);
CurrentPortal = prevpds;
MirrorFlags = prevmf;
ViewAngle = startang;
ViewPos = startpos;
ViewPath[0] = savedpath[0];
ViewPath[1] = savedpath[1];
}
//==========================================================================
//
// R_SetupBuffer
@ -889,16 +643,7 @@ void R_RenderActorView (AActor *actor, bool dontmaplines)
R_DrawPortals();
PlaneCycles.Unclock();
// [RH] Walk through mirrors
// [ZZ] Merged with portals
size_t lastportal = WallPortals.Size();
for (unsigned int i = 0; i < lastportal; i++)
{
R_EnterPortal(&WallPortals[i], 0);
}
CurrentPortal = NULL;
CurrentPortalUniq = 0;
R_DrawWallPortals();
NetUpdate ();

4
src/swrenderer/r_main.h
View file

@ -35,9 +35,13 @@ extern int viewwindowy;
typedef BYTE lighttable_t; // This could be wider for >8 bit display.
extern cycle_t FrameCycles;
namespace swrenderer
{
extern cycle_t WallCycles, PlaneCycles, MaskedCycles, WallScanCycles;
//
// POV related.
//

2
src/swrenderer/scene/r_bsp.h
View file

@ -67,6 +67,8 @@ enum
FAKED_AboveCeiling
};
extern subsector_t *InSubsector;
extern seg_t* curline;
extern side_t* sidedef;
extern line_t* linedef;

2
src/swrenderer/scene/r_draw_segment.h
View file

@ -1,6 +1,8 @@
#pragma once
#include "r_bsp.h"
namespace swrenderer
{
struct drawseg_t

248
src/swrenderer/scene/r_plane.cpp
View file

@ -73,7 +73,6 @@
CVAR(Bool, r_linearsky, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
CVAR(Bool, tilt, false, 0);
CVAR(Bool, r_skyboxes, true, 0)
EXTERN_CVAR(Int, r_skymode)
@ -90,16 +89,10 @@ static void R_DrawSkyStriped (visplane_t *pl);
planefunction_t floorfunc;
planefunction_t ceilingfunc;
// Here comes the obnoxious "visplane".
#define MAXVISPLANES 128 /* must be a power of 2 */
// Avoid infinite recursion with stacked sectors by limiting them.
#define MAX_SKYBOX_PLANES 1000
// [RH] Allocate one extra for sky box planes.
static visplane_t *visplanes[MAXVISPLANES+1]; // killough
static visplane_t *freetail; // killough
static visplane_t **freehead = &freetail; // killough
visplane_t *visplanes[MAXVISPLANES+1];
visplane_t *freetail;
visplane_t **freehead = &freetail;
visplane_t *floorplane;
visplane_t *ceilingplane;
@ -1300,241 +1293,6 @@ void R_DrawSinglePlane (visplane_t *pl, fixed_t alpha, bool additive, bool maske
NetUpdate ();
}
//==========================================================================
//
// R_DrawPortals
//
// 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.
//
//==========================================================================
static int numskyboxes;
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;
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
drawseg_t *draw_segment = R_AddDrawSegment();
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 = R_NewOpening (pl->right - pl->left);
draw_segment->sprtopclip = R_NewOpening (pl->right - pl->left);
draw_segment->maskedtexturecol = ds_p->swall = -1;
draw_segment->bFogBoundary = false;
draw_segment->curline = NULL;
draw_segment->fake = 0;
memcpy (openings + draw_segment->sprbottomclip, floorclip + pl->left, (pl->right - pl->left)*sizeof(short));
memcpy (openings + draw_segment->sprtopclip, ceilingclip + pl->left, (pl->right - pl->left)*sizeof(short));
firstvissprite = vissprite_p;
firstdrawseg = draw_segment;
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;
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;
}
ADD_STAT(skyboxes)
{
FString out;
out.Format ("%d skybox planes", numskyboxes);
return out;
}
//==========================================================================
//
// R_DrawSkyPlane

8
src/swrenderer/scene/r_plane.h
View file

@ -97,7 +97,7 @@ void R_ClearPlanes (bool fullclear);
void R_AddPlaneLights(visplane_t *plane, FLightNode *light_head);
int R_DrawPlanes ();
void R_DrawPortals ();
void R_DrawSinglePlane(visplane_t *pl, fixed_t alpha, bool additive, bool masked);
void R_DrawSkyPlane (visplane_t *pl);
void R_DrawNormalPlane (visplane_t *pl, double xscale, double yscale, fixed_t alpha, bool additive, bool masked);
void R_DrawTiltedPlane (visplane_t *pl, double xscale, double yscale, fixed_t alpha, bool additive, bool masked);
@ -128,6 +128,12 @@ bool R_PlaneInitData (void);
extern visplane_t* floorplane;
extern visplane_t* ceilingplane;
#define MAXVISPLANES 128 /* must be a power of 2 */
extern visplane_t *visplanes[MAXVISPLANES + 1];
extern visplane_t *freetail;
extern visplane_t **freehead;
}
#endif // __R_PLANE_H__

534
src/swrenderer/scene/r_portal.cpp Normal file
View file

@ -0,0 +1,534 @@
#include <stdlib.h>
#include <math.h>
#include "templates.h"
#include "doomdef.h"
#include "d_net.h"
#include "doomstat.h"
#include "m_random.h"
#include "m_bbox.h"
#include "r_portal.h"
#include "r_sky.h"
#include "st_stuff.h"
#include "c_cvars.h"
#include "c_dispatch.h"
#include "v_video.h"
#include "stats.h"
#include "i_video.h"
#include "i_system.h"
#include "a_sharedglobal.h"
#include "r_data/r_translate.h"
#include "p_3dmidtex.h"
#include "r_data/r_interpolate.h"
#include "v_palette.h"
#include "po_man.h"
#include "p_effect.h"
#include "st_start.h"
#include "v_font.h"
#include "r_data/colormaps.h"
#include "p_maputl.h"
#include "p_setup.h"
#include "version.h"
#include "swrenderer/drawers/r_draw_rgba.h"
#include "r_utility.h"
#include "r_plane.h"
#include "r_clip_segment.h"
#include "r_draw_segment.h"
#include "r_things.h"
#include "r_3dfloors.h"
#include "swrenderer/r_main.h"
#include "swrenderer/r_memory.h"
CVAR(Int, r_portal_recursions, 4, CVAR_ARCHIVE)
CVAR(Bool, r_highlight_portals, false, CVAR_ARCHIVE)
CVAR(Bool, r_skyboxes, true, 0)
// Avoid infinite recursion with stacked sectors by limiting them.
#define MAX_SKYBOX_PLANES 1000
namespace swrenderer
{
namespace
{
int numskyboxes; // For ADD_STAT(skyboxes)
}
//==========================================================================
//
// R_DrawPortals
//
// 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 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] == nullptr)
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;
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 != nullptr; 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 = nullptr;
if (pl->right < pl->left || !r_skyboxes || numskyboxes == MAX_SKYBOX_PLANES || pl->portal == nullptr)
{
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 = nullptr;
viewsector = port->mDestination;
assert(viewsector != nullptr);
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
drawseg_t *draw_segment = R_AddDrawSegment();
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 = R_NewOpening(pl->right - pl->left);
draw_segment->sprtopclip = R_NewOpening(pl->right - pl->left);
draw_segment->maskedtexturecol = ds_p->swall = -1;
draw_segment->bFogBoundary = false;
draw_segment->curline = nullptr;
draw_segment->fake = 0;
memcpy(openings + draw_segment->sprbottomclip, floorclip + pl->left, (pl->right - pl->left) * sizeof(short));
memcpy(openings + draw_segment->sprtopclip, ceilingclip + pl->left, (pl->right - pl->left) * sizeof(short));
firstvissprite = vissprite_p;
firstdrawseg = draw_segment;
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 = nullptr;
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;
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] = nullptr; *freehead; )
freehead = &(*freehead)->next;
}
void R_DrawWallPortals()
{
// [RH] Walk through mirrors
// [ZZ] Merged with portals
size_t lastportal = WallPortals.Size();
for (unsigned int i = 0; i < lastportal; i++)
{
R_EnterPortal(&WallPortals[i], 0);
}
CurrentPortal = nullptr;
CurrentPortalUniq = 0;
}
void R_EnterPortal(PortalDrawseg* pds, int depth)
{
// [ZZ] check depth. fill portal with black if it's exceeding the visual recursion limit, and continue like nothing happened.
if (depth >= r_portal_recursions)
{
BYTE color = (BYTE)BestColor((DWORD *)GPalette.BaseColors, 0, 0, 0, 0, 255);
int spacing = RenderTarget->GetPitch();
for (int x = pds->x1; x < pds->x2; x++)
{
if (x < 0 || x >= RenderTarget->GetWidth())
continue;
int Ytop = pds->ceilingclip[x - pds->x1];
int Ybottom = pds->floorclip[x - pds->x1];
if (r_swtruecolor)
{
uint32_t *dest = (uint32_t*)RenderTarget->GetBuffer() + x + Ytop * spacing;
uint32_t c = GPalette.BaseColors[color].d;
for (int y = Ytop; y <= Ybottom; y++)
{
*dest = c;
dest += spacing;
}
}
else
{
BYTE *dest = RenderTarget->GetBuffer() + x + Ytop * spacing;
for (int y = Ytop; y <= Ybottom; y++)
{
*dest = color;
dest += spacing;
}
}
}
if (r_highlight_portals)
R_HighlightPortal(pds);
return;
}
DAngle startang = ViewAngle;
DVector3 startpos = ViewPos;
DVector3 savedpath[2] = { ViewPath[0], ViewPath[1] };
ActorRenderFlags savedvisibility = camera ? camera->renderflags & RF_INVISIBLE : ActorRenderFlags::FromInt(0);
CurrentPortalUniq++;
unsigned int portalsAtStart = WallPortals.Size();
if (pds->mirror)
{
//vertex_t *v1 = ds->curline->v1;
vertex_t *v1 = pds->src->v1;
// Reflect the current view behind the mirror.
if (pds->src->Delta().X == 0)
{ // vertical mirror
ViewPos.X = v1->fX() - startpos.X + v1->fX();
}
else if (pds->src->Delta().Y == 0)
{ // horizontal mirror
ViewPos.Y = v1->fY() - startpos.Y + v1->fY();
}
else
{ // any mirror
vertex_t *v2 = pds->src->v2;
double dx = v2->fX() - v1->fX();
double dy = v2->fY() - v1->fY();
double x1 = v1->fX();
double y1 = v1->fY();
double x = startpos.X;
double y = startpos.Y;
// the above two cases catch len == 0
double r = ((x - x1)*dx + (y - y1)*dy) / (dx*dx + dy*dy);
ViewPos.X = (x1 + r * dx) * 2 - x;
ViewPos.Y = (y1 + r * dy) * 2 - y;
}
ViewAngle = pds->src->Delta().Angle() * 2 - startang;
}
else
{
P_TranslatePortalXY(pds->src, ViewPos.X, ViewPos.Y);
P_TranslatePortalZ(pds->src, ViewPos.Z);
P_TranslatePortalAngle(pds->src, ViewAngle);
P_TranslatePortalXY(pds->src, ViewPath[0].X, ViewPath[0].Y);
P_TranslatePortalXY(pds->src, ViewPath[1].X, ViewPath[1].Y);
if (!r_showviewer && camera && P_PointOnLineSidePrecise(ViewPath[0], pds->dst) != P_PointOnLineSidePrecise(ViewPath[1], pds->dst))
{
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;
}
}
}
}
ViewSin = ViewAngle.Sin();
ViewCos = ViewAngle.Cos();
ViewTanSin = FocalTangent * ViewSin;
ViewTanCos = FocalTangent * ViewCos;
R_CopyStackedViewParameters();
validcount++;
PortalDrawseg* prevpds = CurrentPortal;
CurrentPortal = pds;
R_ClearPlanes(false);
R_ClearClipSegs(pds->x1, pds->x2);
WindowLeft = pds->x1;
WindowRight = pds->x2;
// RF_XFLIP should be removed before calling the root function
int prevmf = MirrorFlags;
if (pds->mirror)
{
if (MirrorFlags & RF_XFLIP)
MirrorFlags &= ~RF_XFLIP;
else MirrorFlags |= RF_XFLIP;
}
// some portals have height differences, account for this here
R_3D_EnterSkybox(); // push 3D floor height map
CurrentPortalInSkybox = false; // first portal in a skybox should set this variable to false for proper clipping in skyboxes.
// first pass, set clipping
memcpy(ceilingclip + pds->x1, &pds->ceilingclip[0], pds->len * sizeof(*ceilingclip));
memcpy(floorclip + pds->x1, &pds->floorclip[0], pds->len * sizeof(*floorclip));
InSubsector = nullptr;
R_RenderBSPNode(nodes + numnodes - 1);
R_3D_ResetClip(); // reset clips (floor/ceiling)
if (!savedvisibility && camera) camera->renderflags &= ~RF_INVISIBLE;
PlaneCycles.Clock();
R_DrawPlanes();
R_DrawPortals();
PlaneCycles.Unclock();
double vzp = ViewPos.Z;
int prevuniq = CurrentPortalUniq;
// depth check is in another place right now
unsigned int portalsAtEnd = WallPortals.Size();
for (; portalsAtStart < portalsAtEnd; portalsAtStart++)
{
R_EnterPortal(&WallPortals[portalsAtStart], depth + 1);
}
int prevuniq2 = CurrentPortalUniq;
CurrentPortalUniq = prevuniq;
NetUpdate();
MaskedCycles.Clock(); // [ZZ] count sprites in portals/mirrors along with normal ones.
R_DrawMasked(); // this is required since with portals there often will be cases when more than 80% of the view is inside a portal.
MaskedCycles.Unclock();
NetUpdate();
R_3D_LeaveSkybox(); // pop 3D floor height map
CurrentPortalUniq = prevuniq2;
// draw a red line around a portal if it's being highlighted
if (r_highlight_portals)
R_HighlightPortal(pds);
CurrentPortal = prevpds;
MirrorFlags = prevmf;
ViewAngle = startang;
ViewPos = startpos;
ViewPath[0] = savedpath[0];
ViewPath[1] = savedpath[1];
}
void R_HighlightPortal(PortalDrawseg* pds)
{
// [ZZ] NO OVERFLOW CHECKS HERE
// I believe it won't break. if it does, blame me. :(
if (r_swtruecolor) // Assuming this is just a debug function
return;
BYTE color = (BYTE)BestColor((DWORD *)GPalette.BaseColors, 255, 0, 0, 0, 255);
BYTE* pixels = RenderTarget->GetBuffer();
// top edge
for (int x = pds->x1; x < pds->x2; x++)
{
if (x < 0 || x >= RenderTarget->GetWidth())
continue;
int p = x - pds->x1;
int Ytop = pds->ceilingclip[p];
int Ybottom = pds->floorclip[p];
if (x == pds->x1 || x == pds->x2 - 1)
{
RenderTarget->DrawLine(x, Ytop, x, Ybottom + 1, color, 0);
continue;
}
int YtopPrev = pds->ceilingclip[p - 1];
int YbottomPrev = pds->floorclip[p - 1];
if (abs(Ytop - YtopPrev) > 1)
RenderTarget->DrawLine(x, YtopPrev, x, Ytop, color, 0);
else *(pixels + Ytop * RenderTarget->GetPitch() + x) = color;
if (abs(Ybottom - YbottomPrev) > 1)
RenderTarget->DrawLine(x, YbottomPrev, x, Ybottom, color, 0);
else *(pixels + Ybottom * RenderTarget->GetPitch() + x) = color;
}
}
}
ADD_STAT(skyboxes)
{
FString out;
out.Format("%d skybox planes", swrenderer::numskyboxes);
return out;
}

12
src/swrenderer/scene/r_portal.h Normal file
View file

@ -0,0 +1,12 @@
#pragma once
#include "r_portal_segment.h"
namespace swrenderer
{
void R_DrawPortals();
void R_DrawWallPortals();
void R_EnterPortal(PortalDrawseg* pds, int depth);
void R_HighlightPortal(PortalDrawseg* pds);
}