void RenderDecal::Render(RenderThread *thread, side_t *wall, DBaseDecal *decal, DrawSegment *clipper, int wallshade, float lightleft, float lightstep, seg_t *curline, const FWallCoords &savecoord, bool foggy, FDynamicColormap *basecolormap, const short *walltop, const short *wallbottom, bool drawsegPass)
{
DVector2 decal_left, decal_right, decal_pos;
int x1, x2;
double yscale;
uint8_t flipx;
double zpos;
int needrepeat = 0;
sector_t *back;
bool calclighting;
bool rereadcolormap;
FDynamicColormap *usecolormap;
float light = 0;
const short *mfloorclip;
const short *mceilingclip;
if (decal->RenderFlags & RF_INVISIBLE || !viewactive || !decal->PicNum.isValid())
return;
// Determine actor z
zpos = decal->Z;
back = (curline->backsector != NULL) ? curline->backsector : curline->frontsector;
// for 3d-floor segments use the model sector as reference
sector_t *front;
if ((decal->RenderFlags&RF_CLIPMASK) == RF_CLIPMID) front = decal->Sector;
else front = curline->frontsector;
switch (decal->RenderFlags & RF_RELMASK)
{
default:
zpos = decal->Z;
break;
case RF_RELUPPER:
if (curline->linedef->flags & ML_DONTPEGTOP)
{
zpos = decal->Z + front->GetPlaneTexZ(sector_t::ceiling);
}
else
{
zpos = decal->Z + back->GetPlaneTexZ(sector_t::ceiling);
}
break;
case RF_RELLOWER:
if (curline->linedef->flags & ML_DONTPEGBOTTOM)
{
zpos = decal->Z + front->GetPlaneTexZ(sector_t::ceiling);
}
else
{
zpos = decal->Z + back->GetPlaneTexZ(sector_t::floor);
}
break;
case RF_RELMID:
if (curline->linedef->flags & ML_DONTPEGBOTTOM)
{
zpos = decal->Z + front->GetPlaneTexZ(sector_t::floor);
}
else
{
zpos = decal->Z + front->GetPlaneTexZ(sector_t::ceiling);
}
}
FTexture *WallSpriteTile = TexMan(decal->PicNum, true);
flipx = (uint8_t)(decal->RenderFlags & RF_XFLIP);
if (WallSpriteTile == NULL || WallSpriteTile->UseType == ETextureType::Null)
{
return;
}
// Determine left and right edges of sprite. Since this sprite is bound
// to a wall, we use the wall's angle instead of the decal's. This is
// pretty much the same as what R_AddLine() does.
double edge_right = WallSpriteTile->GetWidth();
double edge_left = WallSpriteTile->GetLeftOffset(0); // decals should not use renderer-specific offsets.
edge_right = (edge_right - edge_left) * decal->ScaleX;
edge_left *= decal->ScaleX;
double dcx, dcy;
decal->GetXY(wall, dcx, dcy);
decal_pos = { dcx, dcy };
DVector2 angvec = (curline->v2->fPos() - curline->v1->fPos()).Unit();
float maskedScaleY;
decal_left = decal_pos - edge_left * angvec - thread->Viewport->viewpoint.Pos;
decal_right = decal_pos + edge_right * angvec - thread->Viewport->viewpoint.Pos;
CameraLight *cameraLight;
double texturemid;
FWallCoords WallC;
if (WallC.Init(thread, decal_left, decal_right, TOO_CLOSE_Z))
return;
x1 = WallC.sx1;
x2 = WallC.sx2;
if (x1 >= clipper->x2 || x2 <= clipper->x1)
return;
FWallTmapVals WallT;
WallT.InitFromWallCoords(thread, &WallC);
if (drawsegPass)
{
uint32_t clipMode = decal->RenderFlags & RF_CLIPMASK;
if (clipMode != RF_CLIPMID && clipMode != RF_CLIPFULL)
return;
// Clip decal to stay within the draw segment wall
mceilingclip = walltop;
mfloorclip = wallbottom;
// Rumor has it that if RT_CLIPMASK is specified then the decal should be clipped according
// to the full drawsegment visibility, as implemented in the remarked section below.
//
// This is problematic because not all 3d floors may have been drawn yet at this point. The
// code below might work ok for cases where there is only one 3d floor.
/*if (clipMode == RF_CLIPFULL)
{
mceilingclip = clipper->sprtopclip - clipper->x1;
mfloorclip = clipper->sprbottomclip - clipper->x1;
}*/
}
else
{
// Get the top and bottom clipping arrays
switch (decal->RenderFlags & RF_CLIPMASK)
{
default:
// keep GCC quiet.
return;
case RF_CLIPFULL:
if (curline->backsector == NULL)
{
mceilingclip = walltop;
mfloorclip = wallbottom;
}
else
{
mceilingclip = walltop;
mfloorclip = thread->OpaquePass->ceilingclip;
needrepeat = 1;
}
break;
case RF_CLIPUPPER:
mceilingclip = walltop;
mfloorclip = thread->OpaquePass->ceilingclip;
break;
case RF_CLIPMID:
return;
case RF_CLIPLOWER:
mceilingclip = thread->OpaquePass->floorclip;
mfloorclip = wallbottom;
break;
}
}
yscale = decal->ScaleY;
texturemid = WallSpriteTile->GetTopOffset(0) + (zpos - thread->Viewport->viewpoint.Pos.Z) / yscale;
// Clip sprite to drawseg
x1 = MAX<int>(clipper->x1, x1);
x2 = MIN<int>(clipper->x2, x2);
if (x1 >= x2)
{
return;
}
ProjectedWallTexcoords walltexcoords;
walltexcoords.Project(thread->Viewport.get(), WallSpriteTile->GetWidth(), x1, x2, WallT);
if (flipx)
{
int i;
int right = (WallSpriteTile->GetWidth() << FRACBITS) - 1;
for (i = x1; i < x2; i++)
{
walltexcoords.UPos[i] = right - walltexcoords.UPos[i];
}
}
// Prepare lighting
calclighting = false;
usecolormap = basecolormap;
rereadcolormap = true;
// Decals that are added to the scene must fade to black.
if (decal->RenderStyle == LegacyRenderStyles[STYLE_Add] && usecolormap->Fade != 0)
{
usecolormap = GetSpecialLights(usecolormap->Color, 0, usecolormap->Desaturate);
rereadcolormap = false;
}
light = lightleft + (x1 - savecoord.sx1) * lightstep;
cameraLight = CameraLight::Instance();
// Draw it
bool sprflipvert;
if (decal->RenderFlags & RF_YFLIP)
{
sprflipvert = true;
yscale = -yscale;
texturemid -= WallSpriteTile->GetHeight();
}
else
{
sprflipvert = false;
}
maskedScaleY = float(1 / yscale);
do
{
int x = x1;
SpriteDrawerArgs drawerargs;
if (cameraLight->FixedLightLevel() >= 0)
drawerargs.SetLight((r_fullbrightignoresectorcolor) ? &FullNormalLight : usecolormap, 0, cameraLight->FixedLightLevelShade());
else if (cameraLight->FixedColormap() != NULL)
drawerargs.SetLight(cameraLight->FixedColormap(), 0, 0);
else if (!foggy && (decal->RenderFlags & RF_FULLBRIGHT))
drawerargs.SetLight((r_fullbrightignoresectorcolor) ? &FullNormalLight : usecolormap, 0, 0);
else
calclighting = true;
bool visible = drawerargs.SetStyle(thread->Viewport.get(), decal->RenderStyle, (float)decal->Alpha, decal->Translation, decal->AlphaColor, basecolormap);
// R_SetPatchStyle can modify basecolormap.
if (rereadcolormap)
{
usecolormap = basecolormap;
}
if (visible)
{
thread->PrepareTexture(WallSpriteTile, decal->RenderStyle);
while (x < x2)
{
if (calclighting)
{ // calculate lighting
drawerargs.SetLight(usecolormap, light, wallshade);
}
DrawColumn(thread, drawerargs, x, WallSpriteTile, walltexcoords, texturemid, maskedScaleY, sprflipvert, mfloorclip, mceilingclip, decal->RenderStyle);
light += lightstep;
x++;
}
}
// If this sprite is RF_CLIPFULL on a two-sided line, needrepeat will
// be set 1 if we need to draw on the lower wall. In all other cases,
// needrepeat will be 0, and the while will fail.
mceilingclip = thread->OpaquePass->floorclip;
mfloorclip = wallbottom;
} while (needrepeat--);
}
void R_AddLine (seg_t *line)
{
static sector_t tempsec; // killough 3/8/98: ceiling/water hack
bool solid;
fixed_t tx1, tx2, ty1, ty2;
curline = line;
// [RH] Color if not texturing line
dc_color = (((int)(line - segs) * 8) + 4) & 255;
tx1 = line->v1->x - viewx;
tx2 = line->v2->x - viewx;
ty1 = line->v1->y - viewy;
ty2 = line->v2->y - viewy;
// Reject lines not facing viewer
if (DMulScale32 (ty1, tx1-tx2, tx1, ty2-ty1) >= 0)
return;
if (WallC.Init(tx1, ty1, tx2, ty2, 32))
return;
if (WallC.sx1 >= WindowRight || WallC.sx2 <= WindowLeft)
return;
if (line->linedef == NULL)
{
if (R_CheckClipWallSegment (WallC.sx1, WallC.sx2))
{
InSubsector->flags |= SSECF_DRAWN;
}
return;
}
// reject lines that aren't seen from the portal (if any)
// [ZZ] 10.01.2016: lines inside a skybox shouldn't be clipped, although this imposes some limitations on portals in skyboxes.
if (!CurrentPortalInSkybox && CurrentPortal && P_ClipLineToPortal(line->linedef, CurrentPortal->dst, viewx, viewy))
return;
vertex_t *v1, *v2;
v1 = line->linedef->v1;
v2 = line->linedef->v2;
if ((v1 == line->v1 && v2 == line->v2) || (v2 == line->v1 && v1 == line->v2))
{ // The seg is the entire wall.
WallT.InitFromWallCoords(&WallC);
}
else
{ // The seg is only part of the wall.
if (line->linedef->sidedef[0] != line->sidedef)
{
swapvalues (v1, v2);
}
WallT.InitFromLine(v1->x - viewx, v1->y - viewy, v2->x - viewx, v2->y - viewy);
}
if (!(fake3D & FAKE3D_FAKEBACK))
{
backsector = line->backsector;
}
rw_frontcz1 = frontsector->ceilingplane.ZatPoint (line->v1->x, line->v1->y);
rw_frontfz1 = frontsector->floorplane.ZatPoint (line->v1->x, line->v1->y);
rw_frontcz2 = frontsector->ceilingplane.ZatPoint (line->v2->x, line->v2->y);
rw_frontfz2 = frontsector->floorplane.ZatPoint (line->v2->x, line->v2->y);
rw_mustmarkfloor = rw_mustmarkceiling = false;
rw_havehigh = rw_havelow = false;
// Single sided line?
if (backsector == NULL || (line->linedef->isVisualPortal() && line->sidedef == line->linedef->sidedef[0]))
{
solid = true;
}
else
{
// kg3D - its fake, no transfer_heights
if (!(fake3D & FAKE3D_FAKEBACK))
{ // killough 3/8/98, 4/4/98: hack for invisible ceilings / deep water
backsector = R_FakeFlat (backsector, &tempsec, NULL, NULL, true);
}
doorclosed = 0; // killough 4/16/98
rw_backcz1 = backsector->ceilingplane.ZatPoint (line->v1->x, line->v1->y);
rw_backfz1 = backsector->floorplane.ZatPoint (line->v1->x, line->v1->y);
rw_backcz2 = backsector->ceilingplane.ZatPoint (line->v2->x, line->v2->y);
rw_backfz2 = backsector->floorplane.ZatPoint (line->v2->x, line->v2->y);
// Cannot make these walls solid, because it can result in
// sprite clipping problems for sprites near the wall
if (rw_frontcz1 > rw_backcz1 || rw_frontcz2 > rw_backcz2)
{
rw_havehigh = true;
WallMost (wallupper, backsector->ceilingplane, &WallC);
}
if (rw_frontfz1 < rw_backfz1 || rw_frontfz2 < rw_backfz2)
{
rw_havelow = true;
WallMost (walllower, backsector->floorplane, &WallC);
}
// Closed door.
if ((rw_backcz1 <= rw_frontfz1 && rw_backcz2 <= rw_frontfz2) ||
(rw_backfz1 >= rw_frontcz1 && rw_backfz2 >= rw_frontcz2))
{
solid = true;
}
else if (
// properly render skies (consider door "open" if both ceilings are sky):
(backsector->GetTexture(sector_t::ceiling) != skyflatnum || frontsector->GetTexture(sector_t::ceiling) != skyflatnum)
// if door is closed because back is shut:
&& rw_backcz1 <= rw_backfz1 && rw_backcz2 <= rw_backfz2
// preserve a kind of transparent door/lift special effect:
&& ((rw_backcz1 >= rw_frontcz1 && rw_backcz2 >= rw_frontcz2) || line->sidedef->GetTexture(side_t::top).isValid())
&& ((rw_backfz1 <= rw_frontfz1 && rw_backfz2 <= rw_frontfz2) || line->sidedef->GetTexture(side_t::bottom).isValid()))
{
// killough 1/18/98 -- This function is used to fix the automap bug which
// showed lines behind closed doors simply because the door had a dropoff.
//
// It assumes that Doom has already ruled out a door being closed because
// of front-back closure (e.g. front floor is taller than back ceiling).
// This fixes the automap floor height bug -- killough 1/18/98:
// killough 4/7/98: optimize: save result in doorclosed for use in r_segs.c
doorclosed = true;
solid = true;
}
else if (frontsector->ceilingplane != backsector->ceilingplane ||
frontsector->floorplane != backsector->floorplane)
{
// Window.
solid = false;
}
else if (backsector->lightlevel != frontsector->lightlevel
|| backsector->GetTexture(sector_t::floor) != frontsector->GetTexture(sector_t::floor)
|| backsector->GetTexture(sector_t::ceiling) != frontsector->GetTexture(sector_t::ceiling)
|| curline->sidedef->GetTexture(side_t::mid).isValid()
// killough 3/7/98: Take flats offsets into account:
|| backsector->GetXOffset(sector_t::floor) != frontsector->GetXOffset(sector_t::floor)
|| backsector->GetYOffset(sector_t::floor) != frontsector->GetYOffset(sector_t::floor)
|| backsector->GetXOffset(sector_t::ceiling) != frontsector->GetXOffset(sector_t::ceiling)
|| backsector->GetYOffset(sector_t::ceiling) != frontsector->GetYOffset(sector_t::ceiling)
|| backsector->GetPlaneLight(sector_t::floor) != frontsector->GetPlaneLight(sector_t::floor)
|| backsector->GetPlaneLight(sector_t::ceiling) != frontsector->GetPlaneLight(sector_t::ceiling)
|| backsector->GetFlags(sector_t::floor) != frontsector->GetFlags(sector_t::floor)
|| backsector->GetFlags(sector_t::ceiling) != frontsector->GetFlags(sector_t::ceiling)
// [RH] Also consider colormaps
|| backsector->ColorMap != frontsector->ColorMap
// [RH] and scaling
|| backsector->GetXScale(sector_t::floor) != frontsector->GetXScale(sector_t::floor)
|| backsector->GetYScale(sector_t::floor) != frontsector->GetYScale(sector_t::floor)
|| backsector->GetXScale(sector_t::ceiling) != frontsector->GetXScale(sector_t::ceiling)
|| backsector->GetYScale(sector_t::ceiling) != frontsector->GetYScale(sector_t::ceiling)
// [RH] and rotation
|| backsector->GetAngle(sector_t::floor) != frontsector->GetAngle(sector_t::floor)
|| backsector->GetAngle(sector_t::ceiling) != frontsector->GetAngle(sector_t::ceiling)
// kg3D - and fake lights
|| (frontsector->e && frontsector->e->XFloor.lightlist.Size())
|| (backsector->e && backsector->e->XFloor.lightlist.Size())
)
{
solid = false;
}
else
{
// Reject empty lines used for triggers and special events.
// Identical floor and ceiling on both sides, identical light levels
// on both sides, and no middle texture.
// When using GL nodes, do a clipping test for these lines so we can
// mark their subsectors as visible for automap texturing.
if (hasglnodes && !(InSubsector->flags & SSECF_DRAWN))
{
if (R_CheckClipWallSegment(WallC.sx1, WallC.sx2))
{
InSubsector->flags |= SSECF_DRAWN;
}
}
return;
}
}
rw_prepped = false;
if (line->linedef->special == Line_Horizon)
{
// Be aware: Line_Horizon does not work properly with sloped planes
clearbufshort (walltop+WallC.sx1, WallC.sx2 - WallC.sx1, centery);
clearbufshort (wallbottom+WallC.sx1, WallC.sx2 - WallC.sx1, centery);
}
else
{
rw_ceilstat = WallMost (walltop, frontsector->ceilingplane, &WallC);
rw_floorstat = WallMost (wallbottom, frontsector->floorplane, &WallC);
// [RH] treat off-screen walls as solid
#if 0 // Maybe later...
if (!solid)
{
if (rw_ceilstat == 12 && line->sidedef->GetTexture(side_t::top) != 0)
{
rw_mustmarkceiling = true;
solid = true;
}
if (rw_floorstat == 3 && line->sidedef->GetTexture(side_t::bottom) != 0)
{
rw_mustmarkfloor = true;
solid = true;
}
}
#endif
}
if (R_ClipWallSegment (WallC.sx1, WallC.sx2, solid))
{
InSubsector->flags |= SSECF_DRAWN;
}
}
void RenderWallSprite::Project(RenderThread *thread, AActor *thing, const DVector3 &pos, FTexture *pic, const DVector2 &scale, int renderflags, int spriteshade, bool foggy, FDynamicColormap *basecolormap)
{
FWallCoords wallc;
double x1, x2;
DVector2 left, right;
double gzb, gzt, tz;
DAngle ang = thing->Angles.Yaw + 90;
double angcos = ang.Cos();
double angsin = ang.Sin();
// Determine left and right edges of sprite. The sprite's angle is its normal,
// so the edges are 90 degrees each side of it.
x2 = pic->GetScaledWidth();
x1 = pic->GetScaledLeftOffsetSW();
x1 *= scale.X;
x2 *= scale.X;
left.X = pos.X - x1 * angcos - thread->Viewport->viewpoint.Pos.X;
left.Y = pos.Y - x1 * angsin - thread->Viewport->viewpoint.Pos.Y;
right.X = left.X + x2 * angcos;
right.Y = left.Y + x2 * angsin;
// Is it off-screen?
if (wallc.Init(thread, left, right, TOO_CLOSE_Z))
return;
RenderPortal *renderportal = thread->Portal.get();
if (wallc.sx1 >= renderportal->WindowRight || wallc.sx2 <= renderportal->WindowLeft)
return;
// Sprite sorting should probably treat these as walls, not sprites,
// but right now, I just want to get them drawing.
tz = (pos.X - thread->Viewport->viewpoint.Pos.X) * thread->Viewport->viewpoint.TanCos + (pos.Y - thread->Viewport->viewpoint.Pos.Y) * thread->Viewport->viewpoint.TanSin;
int scaled_to = pic->GetScaledTopOffsetSW();
int scaled_bo = scaled_to - pic->GetScaledHeight();
gzt = pos.Z + scale.Y * scaled_to;
gzb = pos.Z + scale.Y * scaled_bo;
RenderWallSprite *vis = thread->FrameMemory->NewObject<RenderWallSprite>();
vis->CurrentPortalUniq = renderportal->CurrentPortalUniq;
vis->x1 = wallc.sx1 < renderportal->WindowLeft ? renderportal->WindowLeft : wallc.sx1;
vis->x2 = wallc.sx2 >= renderportal->WindowRight ? renderportal->WindowRight : wallc.sx2;
vis->yscale = (float)scale.Y;
vis->idepth = float(1 / tz);
vis->depth = (float)tz;
vis->sector = thing->Sector;
vis->heightsec = NULL;
vis->gpos = { (float)pos.X, (float)pos.Y, (float)pos.Z };
vis->gzb = (float)gzb;
vis->gzt = (float)gzt;
vis->deltax = float(pos.X - thread->Viewport->viewpoint.Pos.X);
vis->deltay = float(pos.Y - thread->Viewport->viewpoint.Pos.Y);
vis->renderflags = renderflags;
if (thing->flags5 & MF5_BRIGHT) vis->renderflags |= RF_FULLBRIGHT; // kg3D
vis->RenderStyle = thing->RenderStyle;
vis->FillColor = thing->fillcolor;
vis->Translation = thing->Translation;
vis->FakeFlatStat = WaterFakeSide::Center;
vis->Alpha = float(thing->Alpha);
vis->fakefloor = NULL;
vis->fakeceiling = NULL;
//vis->bInMirror = renderportal->MirrorFlags & RF_XFLIP;
vis->pic = pic;
vis->wallc = wallc;
vis->foggy = foggy;
vis->Light.SetColormap(thread->Light->SpriteGlobVis(foggy) / MAX(tz, MINZ), spriteshade, basecolormap, false, false, false);
thread->SpriteList->Push(vis);
}