mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-11-08 22:11:09 +00:00
735e6d72c4
- Changed: Decal scales now use full precision fixed point numbers. - Changed: Keeping impact decals in their own statlist is enough to keep track of them for when one needs to be destroyed. There's no need to maintain a separate list for them. - Fixed: Decal actors did not spread their decals across neighboring walls. - Fixed: Decal groups did not initialize their IDs and could not be reliably used with the decal actor. - Fixed: Decals on moving polyobjects were not interpolated. R_RenderDecal() now uses the decal's LeftDistance to calculate its visible location, so it always stays in sync with the wall's vertices. This also lets me dump some code from the polyobjects that maintained the decals' (x, y) coordinates. Also, the decals' x and y information is redundant and can be removed. Doing this revealed a bug with slider decals and horizontal sliding: That is, it didn't work at all. I have opted to simply remove the horizontal sliding support so that I don't have to worry about what happens when a decal slides across the edge of a wall. - Fixed: DBaseDecal::LeftDistance was calculated as a 30.2 fixed point number. It should be 2.30 fixed point. SVN r35 (trunk)
2132 lines
56 KiB
C++
2132 lines
56 KiB
C++
// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id:$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// DESCRIPTION:
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// All the clipping: columns, horizontal spans, sky columns.
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//
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// This file contains some code from the Build Engine.
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//
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// "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
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// Ken Silverman's official web site: "http://www.advsys.net/ken"
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// See the included license file "BUILDLIC.TXT" for license info.
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//
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//-----------------------------------------------------------------------------
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#include "m_alloc.h"
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#include <stdlib.h>
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#include <stddef.h>
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#include "templates.h"
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#include "i_system.h"
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#include "doomdef.h"
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#include "doomstat.h"
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#include "p_lnspec.h"
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#include "r_local.h"
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#include "r_sky.h"
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#include "v_video.h"
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#include "m_swap.h"
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#include "w_wad.h"
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#include "stats.h"
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#include "a_sharedglobal.h"
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#define WALLYREPEAT 8
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CVAR (Int, ty, 8, 0)
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CVAR (Int, tx, 8, 0)
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#define HEIGHTBITS 12
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#define HEIGHTSHIFT (FRACBITS-HEIGHTBITS)
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// The 3072 below is just an arbitrary value picked to avoid
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// drawing lines the player is too close to that would overflow
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// the texture calculations.
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#define TOO_CLOSE_Z 3072
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extern fixed_t globaluclip, globaldclip;
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// OPTIMIZE: closed two sided lines as single sided
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// killough 1/6/98: replaced globals with statics where appropriate
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static BOOL segtextured; // True if any of the segs textures might be visible.
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bool markfloor; // False if the back side is the same plane.
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bool markceiling;
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FTexture *toptexture;
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FTexture *bottomtexture;
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FTexture *midtexture;
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int OWallMost (short *mostbuf, fixed_t z);
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int WallMost (short *mostbuf, const secplane_t &plane);
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void PrepWall (fixed_t *swall, fixed_t *lwall, fixed_t walxrepeat);
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void PrepLWall (fixed_t *lwall, fixed_t walxrepeat);
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extern fixed_t WallSZ1, WallSZ2, WallTX1, WallTX2, WallTY1, WallTY2, WallCX1, WallCX2, WallCY1, WallCY2;
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extern int WallSX1, WallSX2;
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extern float WallUoverZorg, WallUoverZstep, WallInvZorg, WallInvZstep, WallDepthScale, WallDepthOrg;
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int wallshade;
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short walltop[MAXWIDTH]; // [RH] record max extents of wall
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short wallbottom[MAXWIDTH];
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short wallupper[MAXWIDTH];
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short walllower[MAXWIDTH];
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fixed_t swall[MAXWIDTH];
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fixed_t lwall[MAXWIDTH];
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int lwallscale;
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//
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// regular wall
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//
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extern fixed_t rw_backcz1, rw_backcz2;
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extern fixed_t rw_backfz1, rw_backfz2;
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extern fixed_t rw_frontcz1, rw_frontcz2;
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extern fixed_t rw_frontfz1, rw_frontfz2;
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int rw_ceilstat, rw_floorstat;
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bool rw_mustmarkfloor, rw_mustmarkceiling;
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bool rw_prepped;
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bool rw_markmirror;
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bool rw_havehigh;
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bool rw_havelow;
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fixed_t rw_light; // [RH] Scale lights with viewsize adjustments
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fixed_t rw_lightstep;
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fixed_t rw_lightleft;
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static fixed_t rw_frontlowertop;
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static int rw_x;
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static int rw_stopx;
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fixed_t rw_offset;
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static fixed_t rw_scalestep;
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static fixed_t rw_midtexturemid;
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static fixed_t rw_toptexturemid;
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static fixed_t rw_bottomtexturemid;
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FTexture *rw_pic;
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static short *maskedtexturecol;
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static FTexture *WallSpriteTile;
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static void R_RenderDecal (side_t *wall, DBaseDecal *first, drawseg_t *clipper, int pass);
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static void WallSpriteColumn (void (*drawfunc)(const BYTE *column, const FTexture::Span *spans));
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//=============================================================================
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//
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// CVAR r_fogboundary
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//
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// If true, makes fog look more "real" by shading the walls separating two
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// sectors with different fog.
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//=============================================================================
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CVAR(Bool, r_fogboundary, true, 0)
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inline bool IsFogBoundary (sector_t *front, sector_t *back)
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{
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return r_fogboundary && !fixedcolormap && front->ColorMap->Fade &&
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front->ColorMap->Fade != back->ColorMap->Fade &&
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(front->ceilingpic != skyflatnum || back->ceilingpic != skyflatnum);
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}
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//=============================================================================
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//
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// CVAR r_drawmirrors
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//
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// Set to false to disable rendering of mirrors
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//=============================================================================
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CVAR(Bool, r_drawmirrors, true, 0)
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//
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// R_RenderMaskedSegRange
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//
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fixed_t *MaskedSWall;
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static void BlastMaskedColumn (void (*blastfunc)(const BYTE *pixels, const FTexture::Span *spans), FTexture *tex)
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{
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if (maskedtexturecol[dc_x] != SHRT_MAX)
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{
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// calculate lighting
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if (!fixedcolormap)
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{
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dc_colormap = basecolormap + (GETPALOOKUP (rw_light, wallshade) << COLORMAPSHIFT);
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}
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dc_iscale = MaskedSWall[dc_x];
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sprtopscreen = centeryfrac - FixedMul (dc_texturemid, spryscale);
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// killough 1/25/98: here's where Medusa came in, because
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// it implicitly assumed that the column was all one patch.
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// Originally, Doom did not construct complete columns for
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// multipatched textures, so there were no header or trailer
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// bytes in the column referred to below, which explains
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// the Medusa effect. The fix is to construct true columns
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// when forming multipatched textures (see r_data.c).
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// draw the texture
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const FTexture::Span *spans;
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const BYTE *pixels = tex->GetColumn (maskedtexturecol[dc_x], &spans);
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blastfunc (pixels, spans);
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maskedtexturecol[dc_x] = SHRT_MAX;
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}
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rw_light += rw_lightstep;
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spryscale += rw_scalestep;
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}
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void R_RenderMaskedSegRange (drawseg_t *ds, int x1, int x2)
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{
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FTexture *tex;
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int i;
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sector_t tempsec; // killough 4/13/98
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fixed_t texheight, textop, scaley;
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sprflipvert = false;
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curline = ds->curline;
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// killough 4/11/98: draw translucent 2s normal textures
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// [RH] modified because we don't use user-definable translucency maps
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ESPSResult drawmode;
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drawmode = R_SetPatchStyle (curline->sidedef->Flags & WALLF_ADDTRANS ? STYLE_Add : STYLE_Translucent,
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curline->linedef->alpha < 255 ? curline->linedef->alpha<<8 : FRACUNIT,
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0, 0);
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if ((drawmode == DontDraw && !ds->bFogBoundary))
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{
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return;
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}
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NetUpdate ();
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frontsector = curline->frontsector;
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backsector = curline->backsector;
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tex = TexMan(curline->sidedef->midtexture);
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// killough 4/13/98: get correct lightlevel for 2s normal textures
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const sector_t *sec = R_FakeFlat (frontsector, &tempsec, NULL, NULL, false);
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basecolormap = sec->ColorMap->Maps; // [RH] Set basecolormap
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wallshade = ds->shade;
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rw_lightstep = ds->lightstep;
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rw_light = ds->light + (x1 - ds->x1) * rw_lightstep;
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mfloorclip = openings + ds->sprbottomclip - ds->x1;
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mceilingclip = openings + ds->sprtopclip - ds->x1;
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// [RH] Draw fog partition
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if (ds->bFogBoundary)
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{
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R_DrawFogBoundary (x1, x2, mceilingclip, mfloorclip);
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if (ds->maskedtexturecol == -1)
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{
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goto clearfog;
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}
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}
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MaskedSWall = (fixed_t *)(openings + ds->swall) - ds->x1;
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maskedtexturecol = openings + ds->maskedtexturecol - ds->x1;
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spryscale = ds->iscale + ds->iscalestep * (x1 - ds->x1);
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rw_scalestep = ds->iscalestep;
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// find positioning
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scaley = tex->ScaleY ? tex->ScaleY : ty;
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texheight = SafeDivScale19 (tex->GetHeight(), scaley);
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if (curline->linedef->flags & ML_DONTPEGBOTTOM)
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{
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dc_texturemid = MAX (frontsector->floortexz, backsector->floortexz) + texheight;
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}
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else
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{
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dc_texturemid = MIN (frontsector->ceilingtexz, backsector->ceilingtexz);
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}
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if (tex->bWorldPanning)
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{
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// rowoffset is added before the MulScale3 so that the masked texture will
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// still be positioned in world units rather than texels.
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dc_texturemid += curline->sidedef->rowoffset - viewz;
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textop = dc_texturemid;
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dc_texturemid = MulScale3 (dc_texturemid, scaley);
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}
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else
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{
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// rowoffset is added outside the multiply so that it positions the texture
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// by texels instead of world units.
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textop = dc_texturemid - viewz + SafeDivScale3 (curline->sidedef->rowoffset, scaley);
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dc_texturemid = MulScale3 (dc_texturemid - viewz, scaley) + curline->sidedef->rowoffset;
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}
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// [RH] Don't bother drawing segs that are completely offscreen
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if (MulScale12 (globaldclip, ds->sz1) < -textop &&
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MulScale12 (globaldclip, ds->sz2) < -textop)
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{ // Texture top is below the bottom of the screen
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goto clearfog;
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}
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if (MulScale12 (globaluclip, ds->sz1) > texheight - textop &&
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MulScale12 (globaluclip, ds->sz2) > texheight - textop)
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{ // Texture bottom is above the top of the screen
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goto clearfog;
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}
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WallSZ1 = ds->sz1;
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WallSZ2 = ds->sz2;
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WallSX1 = ds->sx1;
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WallSX2 = ds->sx2;
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OWallMost (wallupper, textop);
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OWallMost (walllower, textop - texheight);
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for (i = x1; i <= x2; i++)
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{
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if (wallupper[i] < mceilingclip[i])
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wallupper[i] = mceilingclip[i];
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}
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for (i = x1; i <= x2; i++)
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{
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if (walllower[i] > mfloorclip[i])
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walllower[i] = mfloorclip[i];
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}
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mfloorclip = walllower;
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mceilingclip = wallupper;
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if (fixedlightlev)
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dc_colormap = basecolormap + fixedlightlev;
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else if (fixedcolormap)
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dc_colormap = fixedcolormap;
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// draw the columns one at a time
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if (drawmode == DoDraw0)
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{
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for (dc_x = x1; dc_x <= x2; ++dc_x)
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{
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BlastMaskedColumn (R_DrawMaskedColumn, tex);
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}
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}
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else
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{
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// [RH] Draw up to four columns at once
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int stop = (x2+1) & ~3;
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if (x1 > x2)
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goto clearfog;
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dc_x = x1;
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while ((dc_x < stop) && (dc_x & 3))
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{
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BlastMaskedColumn (R_DrawMaskedColumn, tex);
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dc_x++;
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}
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while (dc_x < stop)
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{
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rt_initcols();
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BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex); dc_x++;
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BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex); dc_x++;
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BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex); dc_x++;
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BlastMaskedColumn (R_DrawMaskedColumnHoriz, tex);
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rt_draw4cols (dc_x - 3);
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dc_x++;
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}
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while (dc_x <= x2)
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{
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BlastMaskedColumn (R_DrawMaskedColumn, tex);
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dc_x++;
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}
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}
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clearfog:
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R_FinishSetPatchStyle ();
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//if (ds->bFogBoundary)
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{
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clearbufshort (openings + ds->sprtopclip - ds->x1 + x1, x2-x1+1, viewheight);
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}
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return;
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}
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extern int *texturewidthmask;
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// prevlineasm1 is like vlineasm1 but skips the loop if only drawing one pixel
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inline fixed_t prevline1 (fixed_t vince, byte *colormap, int count, fixed_t vplce, const byte *bufplce, byte *dest)
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{
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dc_iscale = vince;
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dc_colormap = colormap;
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dc_count = count;
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dc_texturefrac = vplce;
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dc_source = bufplce;
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dc_dest = dest;
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return doprevline1 ();
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}
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/*
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esp+00 = edi
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esp+04 = ebx
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esp+08 = esi
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esp+0c = ebp
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esp+13 = bad
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esp+14 = light
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esp+18 = &uwal[x]
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esp+1c = &lwal[x]
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esp+20 = x2
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esp+24 = &dwal[x]
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esp+28 =
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esp+2c = xoffset
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esp+30 = yrepeat
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esp+34 = texturemid
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esp+40 = y1ve[]
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esp+50 = y2ve[]
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esp+54 =
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esp+58 =
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esp+5c =
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esp+60 = <return address>
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esp+64 = uwal
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esp+68 = dwal
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esp+6c = swal
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esp+70 = lwal
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esp+74 = getcol
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esi = x
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ebp = x2
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*/
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void wallscan (int x1, int x2, short *uwal, short *dwal, fixed_t *swal, fixed_t *lwal,
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const BYTE *(*getcol)(FTexture *tex, int x))
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{
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long x, shiftval;
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long y1ve[4], y2ve[4], u4, d4, z;
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char bad;
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fixed_t light = rw_light - rw_lightstep;
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SDWORD yrepeat, texturemid, xoffset;
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// This function also gets used to draw skies. Unlike BUILD, skies are
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// drawn by visplane instead of by bunch, so these checks are invalid.
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//if ((uwal[x1] > viewheight) && (uwal[x2] > viewheight)) return;
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//if ((dwal[x1] < 0) && (dwal[x2] < 0)) return;
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if (rw_pic->UseType == FTexture::TEX_Null)
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{
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return;
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}
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|
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//extern cycle_t WallScanCycles;
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//clock (WallScanCycles);
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|
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rw_pic->GetHeight(); // Make sure texture size is loaded
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shiftval = rw_pic->HeightBits;
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setupvline (32-shiftval);
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yrepeat = (rw_pic->ScaleY ? rw_pic->ScaleY : ty) << (11 - shiftval);
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texturemid = dc_texturemid << (16 - shiftval);
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xoffset = rw_offset;
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x = x1;
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//while ((umost[x] > dmost[x]) && (x <= x2)) x++;
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|
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if (fixedcolormap)
|
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{
|
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palookupoffse[0] = dc_colormap;
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palookupoffse[1] = dc_colormap;
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palookupoffse[2] = dc_colormap;
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palookupoffse[3] = dc_colormap;
|
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}
|
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|
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for(; (x <= x2) && (x & 3); ++x)
|
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{
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light += rw_lightstep;
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y1ve[0] = uwal[x];//max(uwal[x],umost[x]);
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y2ve[0] = dwal[x];//min(dwal[x],dmost[x]);
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if (y2ve[0] <= y1ve[0]) continue;
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|
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if (!fixedcolormap)
|
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{ // calculate lighting
|
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dc_colormap = basecolormap + (GETPALOOKUP (light, wallshade) << COLORMAPSHIFT);
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}
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|
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dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
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dc_dest = ylookup[y1ve[0]] + x + dc_destorg;
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dc_iscale = swal[x] * yrepeat;
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dc_count = y2ve[0] - y1ve[0];
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dc_texturefrac = texturemid + FixedMul (dc_iscale, (y1ve[0]<<FRACBITS)-centeryfrac+FRACUNIT);
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|
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dovline1();
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}
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for(; x <= x2-3; x += 4)
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{
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bad = 0;
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for (z = 3; z>= 0; --z)
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{
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y1ve[z] = uwal[x+z];//max(uwal[x+z],umost[x+z]);
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y2ve[z] = dwal[x+z];//min(dwal[x+z],dmost[x+z])-1;
|
|
if (y2ve[z] <= y1ve[z]) { bad += 1<<z; continue; }
|
|
|
|
bufplce[z] = getcol (rw_pic, (lwal[x+z] + xoffset) >> FRACBITS);
|
|
vince[z] = swal[x+z] * yrepeat;
|
|
vplce[z] = texturemid + FixedMul (vince[z], (y1ve[z]<<FRACBITS)-centeryfrac+FRACUNIT);
|
|
}
|
|
if (bad == 15)
|
|
{
|
|
light += rw_lightstep << 2;
|
|
continue;
|
|
}
|
|
|
|
if (!fixedcolormap)
|
|
{
|
|
for (z = 0; z < 4; ++z)
|
|
{
|
|
light += rw_lightstep;
|
|
palookupoffse[z] = basecolormap + (GETPALOOKUP (light, wallshade) << COLORMAPSHIFT);
|
|
}
|
|
}
|
|
|
|
u4 = MAX(MAX(y1ve[0],y1ve[1]),MAX(y1ve[2],y1ve[3]));
|
|
d4 = MIN(MIN(y2ve[0],y2ve[1]),MIN(y2ve[2],y2ve[3]));
|
|
|
|
if ((bad != 0) || (u4 >= d4))
|
|
{
|
|
for (z = 0; z < 4; ++z)
|
|
{
|
|
if (!(bad & 1))
|
|
{
|
|
prevline1(vince[z],palookupoffse[z],y2ve[z]-y1ve[z],vplce[z],bufplce[z],ylookup[y1ve[z]]+x+z+dc_destorg);
|
|
}
|
|
bad >>= 1;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
for (z = 0; z < 4; ++z)
|
|
{
|
|
if (u4 > y1ve[z])
|
|
{
|
|
vplce[z] = prevline1(vince[z],palookupoffse[z],u4-y1ve[z],vplce[z],bufplce[z],ylookup[y1ve[z]]+x+z+dc_destorg);
|
|
}
|
|
}
|
|
|
|
if (d4 > u4)
|
|
{
|
|
dc_count = d4-u4;
|
|
dc_dest = ylookup[u4]+x+dc_destorg;
|
|
dovline4();
|
|
}
|
|
|
|
BYTE *i = x+ylookup[d4]+dc_destorg;
|
|
for (z = 0; z < 4; ++z)
|
|
{
|
|
if (y2ve[z] > d4)
|
|
{
|
|
prevline1(vince[z],palookupoffse[0],y2ve[z]-d4,vplce[z],bufplce[z],i+z);
|
|
}
|
|
}
|
|
}
|
|
for(;x<=x2;x++)
|
|
{
|
|
light += rw_lightstep;
|
|
y1ve[0] = uwal[x];//max(uwal[x],umost[x]);
|
|
y2ve[0] = dwal[x];//min(dwal[x],dmost[x]);
|
|
if (y2ve[0] <= y1ve[0]) continue;
|
|
|
|
if (!fixedcolormap)
|
|
{ // calculate lighting
|
|
dc_colormap = basecolormap + (GETPALOOKUP (light, wallshade) << COLORMAPSHIFT);
|
|
}
|
|
|
|
dc_source = getcol (rw_pic, (lwal[x] + xoffset) >> FRACBITS);
|
|
dc_dest = ylookup[y1ve[0]] + x + dc_destorg;
|
|
dc_iscale = swal[x] * yrepeat;
|
|
dc_count = y2ve[0] - y1ve[0];
|
|
dc_texturefrac = texturemid + FixedMul (dc_iscale, (y1ve[0]<<FRACBITS)-centeryfrac+FRACUNIT);
|
|
|
|
dovline1();
|
|
}
|
|
|
|
//unclock (WallScanCycles);
|
|
|
|
NetUpdate ();
|
|
}
|
|
|
|
void wallscan_striped (int x1, int x2, short *uwal, short *dwal, fixed_t *swal, fixed_t *lwal)
|
|
{
|
|
bool flooding = false;
|
|
byte *startcolormap = basecolormap;
|
|
int startshade = wallshade;
|
|
bool fogginess = foggy;
|
|
|
|
byte *floodcolormap = startcolormap;
|
|
int floodshade = startshade;
|
|
bool floodfoggy = foggy;
|
|
|
|
short most1[MAXWIDTH], most2[MAXWIDTH], most3[MAXWIDTH];
|
|
short *up, *down;
|
|
|
|
FExtraLight *el = frontsector->ExtraLights;
|
|
|
|
up = uwal;
|
|
down = most1;
|
|
|
|
for (int i = 0; i < el->NumUsedLights; ++i)
|
|
{
|
|
if (flooding && !el->Lights[i].bFlooder)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (!el->Lights[i].bOverlaps)
|
|
{
|
|
int j = WallMost (most3, el->Lights[i].Plane);
|
|
|
|
if (most3[x1] > dwal[x1] && most3[x2] > dwal[x2])
|
|
{ // Done - does not work as well as I thought it would
|
|
//break;
|
|
}
|
|
|
|
if (j != 3 && (most3[x1] > up[x1] || most3[x2] > up[x2]))
|
|
{
|
|
for (int j = x1; j <= x2; ++j)
|
|
{
|
|
down[j] = clamp (most3[j], up[j], dwal[j]);
|
|
}
|
|
wallscan (x1, x2, up, down, swal, lwal);
|
|
|
|
up = down;
|
|
down = (down == most1) ? most2 : most1;
|
|
}
|
|
}
|
|
|
|
if (el->Lights[i].Master == NULL)
|
|
{
|
|
basecolormap = floodcolormap;
|
|
wallshade = floodshade;
|
|
fogginess = floodfoggy;
|
|
}
|
|
else
|
|
{
|
|
basecolormap = el->Lights[i].Master->ColorMap->Maps;
|
|
fogginess = level.fadeto || el->Lights[i].Master->ColorMap->Fade;
|
|
wallshade = LIGHT2SHADE(curline->sidedef->GetLightLevel(fogginess,
|
|
el->Lights[i].Master->lightlevel) + r_actualextralight);
|
|
if (el->Lights[i].bFlooder)
|
|
{
|
|
floodcolormap = basecolormap;
|
|
floodshade = wallshade;
|
|
flooding = true;
|
|
}
|
|
}
|
|
}
|
|
wallscan (x1, x2, up, dwal, swal, lwal);
|
|
basecolormap = startcolormap;
|
|
wallshade = startshade;
|
|
}
|
|
|
|
//
|
|
// R_RenderSegLoop
|
|
// Draws zero, one, or two textures for walls.
|
|
// Can draw or mark the starting pixel of floor and ceiling textures.
|
|
// CALLED: CORE LOOPING ROUTINE.
|
|
//
|
|
// [RH] Rewrote this to use Build's wallscan, so it's quite far
|
|
// removed from the original Doom routine.
|
|
//
|
|
|
|
void R_RenderSegLoop ()
|
|
{
|
|
int x1 = rw_x;
|
|
int x2 = rw_stopx;
|
|
int x;
|
|
int xscale;
|
|
fixed_t xoffset = rw_offset;
|
|
|
|
if (fixedlightlev)
|
|
dc_colormap = basecolormap + fixedlightlev;
|
|
else if (fixedcolormap)
|
|
dc_colormap = fixedcolormap;
|
|
|
|
// clip wall to the floor and ceiling
|
|
for (x = x1; x < x2; ++x)
|
|
{
|
|
if (walltop[x] < ceilingclip[x])
|
|
{
|
|
walltop[x] = ceilingclip[x];
|
|
}
|
|
if (wallbottom[x] > floorclip[x])
|
|
{
|
|
wallbottom[x] = floorclip[x];
|
|
}
|
|
}
|
|
|
|
// mark ceiling areas
|
|
if (markceiling)
|
|
{
|
|
for (x = x1; x < x2; ++x)
|
|
{
|
|
short top = ceilingclip[x];
|
|
short bottom = MIN (walltop[x], floorclip[x]);
|
|
if (top < bottom)
|
|
{
|
|
ceilingplane->top[x] = top;
|
|
ceilingplane->bottom[x] = bottom;
|
|
}
|
|
}
|
|
}
|
|
|
|
// mark floor areas
|
|
if (markfloor)
|
|
{
|
|
for (x = x1; x < x2; ++x)
|
|
{
|
|
short top = MAX (wallbottom[x], ceilingclip[x]);
|
|
short bottom = floorclip[x];
|
|
if (top < bottom)
|
|
{
|
|
floorplane->top[x] = top;
|
|
floorplane->bottom[x] = bottom;
|
|
}
|
|
}
|
|
}
|
|
|
|
// draw the wall tiers
|
|
if (midtexture)
|
|
{ // one sided line
|
|
if (midtexture->UseType != FTexture::TEX_Null && viewactive)
|
|
{
|
|
dc_texturemid = rw_midtexturemid;
|
|
rw_pic = midtexture;
|
|
xscale = rw_pic->ScaleX ? rw_pic->ScaleX : tx;
|
|
if (xscale != lwallscale)
|
|
{
|
|
PrepLWall (lwall, (curline->sidedef->TexelLength*xscale) << (FRACBITS-3));
|
|
lwallscale = xscale;
|
|
}
|
|
if (midtexture->bWorldPanning)
|
|
{
|
|
rw_offset = MulScale3 (xoffset, midtexture->ScaleX ? midtexture->ScaleX : tx);
|
|
}
|
|
if (fixedlightlev || fixedcolormap || !frontsector->ExtraLights)
|
|
{
|
|
wallscan (x1, x2-1, walltop, wallbottom, swall, lwall);
|
|
}
|
|
else
|
|
{
|
|
wallscan_striped (x1, x2-1, walltop, wallbottom, swall, lwall);
|
|
}
|
|
}
|
|
clearbufshort (ceilingclip+x1, x2-x1, viewheight);
|
|
clearbufshort (floorclip+x1, x2-x1, 0xffff);
|
|
}
|
|
else
|
|
{ // two sided line
|
|
if (toptexture != NULL && toptexture->UseType != FTexture::TEX_Null)
|
|
{ // top wall
|
|
for (x = x1; x < x2; ++x)
|
|
{
|
|
wallupper[x] = MAX (MIN (wallupper[x], floorclip[x]), walltop[x]);
|
|
}
|
|
if (viewactive)
|
|
{
|
|
dc_texturemid = rw_toptexturemid;
|
|
rw_pic = toptexture;
|
|
xscale = rw_pic->ScaleX ? rw_pic->ScaleX : tx;
|
|
if (xscale != lwallscale)
|
|
{
|
|
PrepLWall (lwall, (curline->sidedef->TexelLength*xscale) << (FRACBITS-3));
|
|
lwallscale = xscale;
|
|
}
|
|
if (toptexture->bWorldPanning)
|
|
{
|
|
rw_offset = MulScale3 (xoffset, toptexture->ScaleX ? toptexture->ScaleX : tx);
|
|
}
|
|
if (fixedlightlev || fixedcolormap || !frontsector->ExtraLights)
|
|
{
|
|
wallscan (x1, x2-1, walltop, wallupper, swall, lwall);
|
|
}
|
|
else
|
|
{
|
|
wallscan_striped (x1, x2-1, walltop, wallupper, swall, lwall);
|
|
}
|
|
}
|
|
memcpy (ceilingclip+x1, wallupper+x1, (x2-x1)*sizeof(short));
|
|
}
|
|
else if (markceiling)
|
|
{ // no top wall
|
|
memcpy (ceilingclip+x1, walltop+x1, (x2-x1)*sizeof(short));
|
|
}
|
|
|
|
|
|
if (bottomtexture != NULL && bottomtexture->UseType != FTexture::TEX_Null)
|
|
{ // bottom wall
|
|
for (x = x1; x < x2; ++x)
|
|
{
|
|
walllower[x] = MIN (MAX (walllower[x], ceilingclip[x]), wallbottom[x]);
|
|
}
|
|
if (viewactive)
|
|
{
|
|
dc_texturemid = rw_bottomtexturemid;
|
|
rw_pic = bottomtexture;
|
|
xscale = rw_pic->ScaleX ? rw_pic->ScaleX : tx;
|
|
if (xscale != lwallscale)
|
|
{
|
|
PrepLWall (lwall, (curline->sidedef->TexelLength*xscale) << (FRACBITS-3));
|
|
lwallscale = xscale;
|
|
}
|
|
if (bottomtexture->bWorldPanning)
|
|
{
|
|
rw_offset = MulScale3 (xoffset, bottomtexture->ScaleX ? bottomtexture->ScaleX : tx);
|
|
}
|
|
else
|
|
{
|
|
rw_offset = xoffset;
|
|
}
|
|
if (fixedlightlev || fixedcolormap || !frontsector->ExtraLights)
|
|
{
|
|
wallscan (x1, x2-1, walllower, wallbottom, swall, lwall);
|
|
}
|
|
else
|
|
{
|
|
wallscan_striped (x1, x2-1, walllower, wallbottom, swall, lwall);
|
|
}
|
|
}
|
|
memcpy (floorclip+x1, walllower+x1, (x2-x1)*sizeof(short));
|
|
}
|
|
else if (markfloor)
|
|
{ // no bottom wall
|
|
memcpy (floorclip+x1, wallbottom+x1, (x2-x1)*sizeof(short));
|
|
}
|
|
}
|
|
rw_offset = xoffset;
|
|
}
|
|
|
|
void R_NewWall (bool needlights)
|
|
{
|
|
fixed_t rowoffset;
|
|
|
|
rw_markmirror = false;
|
|
|
|
sidedef = curline->sidedef;
|
|
linedef = curline->linedef;
|
|
|
|
// mark the segment as visible for auto map
|
|
linedef->flags |= ML_MAPPED;
|
|
|
|
midtexture = toptexture = bottomtexture = 0;
|
|
|
|
if (backsector == NULL)
|
|
{
|
|
// single sided line
|
|
// a single sided line is terminal, so it must mark ends
|
|
markfloor = markceiling = true;
|
|
// [RH] Render mirrors later, but mark them now.
|
|
if (linedef->special != Line_Mirror || !r_drawmirrors)
|
|
{
|
|
// [RH] Horizon lines do not need to be textured
|
|
if (linedef->special != Line_Horizon)
|
|
{
|
|
midtexture = TexMan(sidedef->midtexture);
|
|
rowoffset = sidedef->rowoffset;
|
|
if (linedef->flags & ML_DONTPEGBOTTOM)
|
|
{ // bottom of texture at bottom
|
|
rw_midtexturemid = frontsector->floortexz + (midtexture->GetHeight() << FRACBITS);
|
|
}
|
|
else
|
|
{ // top of texture at top
|
|
rw_midtexturemid = frontsector->ceilingtexz;
|
|
if (rowoffset < 0 && midtexture != NULL)
|
|
{
|
|
rowoffset += midtexture->GetHeight() << FRACBITS;
|
|
}
|
|
}
|
|
if (midtexture->bWorldPanning)
|
|
{
|
|
rw_midtexturemid = MulScale3 (rw_midtexturemid - viewz + rowoffset,
|
|
midtexture->ScaleY ? midtexture->ScaleY : ty);
|
|
}
|
|
else
|
|
{
|
|
// rowoffset is added outside the multiply so that it positions the texture
|
|
// by texels instead of world units.
|
|
rw_midtexturemid = MulScale3 (rw_midtexturemid - viewz,
|
|
midtexture->ScaleY ? midtexture->ScaleY : ty)
|
|
+ rowoffset;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
rw_markmirror = true;
|
|
}
|
|
}
|
|
else
|
|
{ // two-sided line
|
|
// hack to allow height changes in outdoor areas
|
|
|
|
rw_frontlowertop = frontsector->ceilingtexz;
|
|
|
|
if (frontsector->ceilingpic == skyflatnum &&
|
|
backsector->ceilingpic == skyflatnum)
|
|
{
|
|
if (rw_havehigh)
|
|
{ // front ceiling is above back ceiling
|
|
memcpy (&walltop[WallSX1], &wallupper[WallSX1], (WallSX2 - WallSX1)*sizeof(walltop[0]));
|
|
rw_havehigh = false;
|
|
}
|
|
else
|
|
{ // back ceiling is above front ceiling
|
|
// Recalculate walltop so that the wall is clipped by the back sector's
|
|
// ceiling instead of the front sector's ceiling.
|
|
WallMost (walltop, backsector->ceilingplane);
|
|
}
|
|
// Putting sky ceilins on the front and back of a line alters the way unpegged
|
|
// positioning works.
|
|
rw_frontlowertop = backsector->ceilingtexz;
|
|
}
|
|
|
|
if ((rw_backcz1 <= rw_frontfz1 && rw_backcz2 <= rw_frontfz2) ||
|
|
(rw_backfz1 >= rw_frontcz1 && rw_backfz2 >= rw_frontcz2))
|
|
{
|
|
// closed door
|
|
markceiling = markfloor = true;
|
|
}
|
|
else
|
|
{
|
|
markfloor = rw_mustmarkfloor
|
|
|| backsector->floorplane != frontsector->floorplane
|
|
|| backsector->lightlevel != frontsector->lightlevel
|
|
|| backsector->floorpic != frontsector->floorpic
|
|
|
|
// killough 3/7/98: Add checks for (x,y) offsets
|
|
|| backsector->floor_xoffs != frontsector->floor_xoffs
|
|
|| (backsector->floor_yoffs + backsector->base_floor_yoffs) != (frontsector->floor_yoffs + frontsector->base_floor_yoffs)
|
|
|
|
// killough 4/15/98: prevent 2s normals
|
|
// from bleeding through deep water
|
|
|| frontsector->heightsec
|
|
|
|
|| backsector->FloorLight != frontsector->FloorLight
|
|
|| backsector->FloorFlags != frontsector->FloorFlags
|
|
|
|
// [RH] Add checks for colormaps
|
|
|| backsector->ColorMap != frontsector->ColorMap
|
|
|
|
|| backsector->floor_xscale != frontsector->floor_xscale
|
|
|| backsector->floor_yscale != frontsector->floor_yscale
|
|
|
|
|| (backsector->floor_angle + backsector->base_floor_angle) != (frontsector->floor_angle + frontsector->base_floor_angle)
|
|
|
|
|| (sidedef->midtexture && linedef->flags & ML_CLIP_MIDTEX)
|
|
;
|
|
|
|
markceiling = (frontsector->ceilingpic != skyflatnum ||
|
|
backsector->ceilingpic != skyflatnum) &&
|
|
(rw_mustmarkceiling
|
|
|| backsector->ceilingplane != frontsector->ceilingplane
|
|
|| backsector->lightlevel != frontsector->lightlevel
|
|
|| backsector->ceilingpic != frontsector->ceilingpic
|
|
|
|
// killough 3/7/98: Add checks for (x,y) offsets
|
|
|| backsector->ceiling_xoffs != frontsector->ceiling_xoffs
|
|
|| (backsector->ceiling_yoffs + backsector->base_ceiling_yoffs) != (frontsector->ceiling_yoffs + frontsector->base_ceiling_yoffs)
|
|
|
|
// killough 4/15/98: prevent 2s normals
|
|
// from bleeding through fake ceilings
|
|
|| (frontsector->heightsec && frontsector->ceilingpic != skyflatnum)
|
|
|
|
|| backsector->CeilingLight != frontsector->CeilingLight
|
|
|| backsector->CeilingFlags != frontsector->CeilingFlags
|
|
|
|
// [RH] Add check for colormaps
|
|
|| backsector->ColorMap != frontsector->ColorMap
|
|
|
|
|| backsector->ceiling_xscale != frontsector->ceiling_xscale
|
|
|| backsector->ceiling_yscale != frontsector->ceiling_yscale
|
|
|
|
|| (backsector->ceiling_angle + backsector->base_ceiling_angle) != (frontsector->ceiling_angle + frontsector->base_ceiling_angle)
|
|
|
|
|| (sidedef->midtexture && linedef->flags & ML_CLIP_MIDTEX)
|
|
);
|
|
}
|
|
|
|
if (rw_havehigh)
|
|
{ // top texture
|
|
toptexture = TexMan(sidedef->toptexture);
|
|
const int scale = toptexture->ScaleY ? toptexture->ScaleY : ty;
|
|
|
|
rowoffset = sidedef->rowoffset;
|
|
if (linedef->flags & ML_DONTPEGTOP)
|
|
{ // top of texture at top
|
|
rw_toptexturemid = MulScale3 (frontsector->ceilingtexz - viewz, scale);
|
|
if (rowoffset < 0 && toptexture != NULL)
|
|
{
|
|
rowoffset += toptexture->GetHeight() << FRACBITS;
|
|
}
|
|
}
|
|
else
|
|
{ // bottom of texture at bottom
|
|
rw_toptexturemid = MulScale3 (backsector->ceilingtexz - viewz, scale) + (toptexture->GetHeight() << FRACBITS);
|
|
}
|
|
if (toptexture->bWorldPanning)
|
|
{
|
|
rw_toptexturemid += MulScale3 (rowoffset, scale);
|
|
}
|
|
else
|
|
{
|
|
rw_toptexturemid += rowoffset;
|
|
}
|
|
}
|
|
if (rw_havelow)
|
|
{ // bottom texture
|
|
bottomtexture = TexMan(sidedef->bottomtexture);
|
|
|
|
rowoffset = sidedef->rowoffset;
|
|
if (linedef->flags & ML_DONTPEGBOTTOM)
|
|
{ // bottom of texture at bottom
|
|
rw_bottomtexturemid = rw_frontlowertop;
|
|
}
|
|
else
|
|
{ // top of texture at top
|
|
rw_bottomtexturemid = backsector->floortexz;
|
|
if (rowoffset < 0 && bottomtexture != NULL)
|
|
{
|
|
rowoffset += bottomtexture->GetHeight() << FRACBITS;
|
|
}
|
|
}
|
|
if (bottomtexture->bWorldPanning)
|
|
{
|
|
rw_bottomtexturemid = MulScale3 (rw_bottomtexturemid - viewz + rowoffset,
|
|
bottomtexture->ScaleY ? bottomtexture->ScaleY : ty);
|
|
}
|
|
else
|
|
{
|
|
rw_bottomtexturemid = MulScale3 (rw_bottomtexturemid - viewz,
|
|
bottomtexture->ScaleY ? bottomtexture->ScaleY : ty)
|
|
+ rowoffset;
|
|
}
|
|
}
|
|
}
|
|
|
|
// if a floor / ceiling plane is on the wrong side of the view plane,
|
|
// it is definitely invisible and doesn't need to be marked.
|
|
|
|
// killough 3/7/98: add deep water check
|
|
if (frontsector->heightsec == NULL ||
|
|
(frontsector->heightsec->MoreFlags & SECF_IGNOREHEIGHTSEC))
|
|
{
|
|
if (frontsector->floorplane.ZatPoint (viewx, viewy) >= viewz) // above view plane
|
|
markfloor = false;
|
|
if (frontsector->ceilingplane.ZatPoint (viewx, viewy) <= viewz &&
|
|
frontsector->ceilingpic != skyflatnum) // below view plane
|
|
markceiling = false;
|
|
}
|
|
|
|
segtextured = TexMan(sidedef->midtexture) != NULL || toptexture != NULL || bottomtexture != NULL;
|
|
|
|
// calculate light table
|
|
if (needlights && (segtextured || (backsector && IsFogBoundary (frontsector, backsector))))
|
|
{
|
|
lwallscale = TexMan(sidedef->midtexture) ? TexMan(sidedef->midtexture)->ScaleX :
|
|
toptexture ? toptexture->ScaleX :
|
|
bottomtexture ? bottomtexture->ScaleX : 0;
|
|
if (lwallscale == 0)
|
|
{
|
|
lwallscale = tx;
|
|
}
|
|
PrepWall (swall, lwall, (sidedef->TexelLength*lwallscale) << (FRACBITS-3));
|
|
|
|
if (!fixedcolormap)
|
|
{
|
|
wallshade = LIGHT2SHADE(curline->sidedef->GetLightLevel(foggy, frontsector->lightlevel)
|
|
+ r_actualextralight);
|
|
GlobVis = r_WallVisibility;
|
|
rw_lightleft = SafeDivScale12 (GlobVis, WallSZ1);
|
|
rw_lightstep = (SafeDivScale12 (GlobVis, WallSZ2) - rw_lightleft) / (WallSX2 - WallSX1);
|
|
}
|
|
else
|
|
{
|
|
rw_lightleft = FRACUNIT;
|
|
rw_lightstep = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
int side_s::GetLightLevel (bool foggy, int baselight) const
|
|
{
|
|
// [RH] Get wall light level
|
|
if (this->Flags & WALLF_ABSLIGHTING && (!(this->Flags & WALLF_AUTOCONTRAST) || foggy))
|
|
{
|
|
return (BYTE)this->Light;
|
|
}
|
|
else
|
|
{
|
|
if (!foggy) // Don't do relative lighting in foggy sectors
|
|
{
|
|
int rellight;
|
|
|
|
if (this->Flags & WALLF_AUTOCONTRAST)
|
|
{
|
|
baselight = (BYTE)this->Light;
|
|
rellight = linedef->dx==0? level.WallVertLight : linedef->dy==0 ? level.WallHorizLight : 0;
|
|
}
|
|
else
|
|
{
|
|
rellight = this->Light;
|
|
}
|
|
|
|
baselight += rellight * 2;
|
|
}
|
|
return baselight;
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// R_CheckDrawSegs
|
|
//
|
|
|
|
void R_CheckDrawSegs ()
|
|
{
|
|
if (ds_p == &drawsegs[MaxDrawSegs])
|
|
{ // [RH] Grab some more drawsegs
|
|
size_t newdrawsegs = MaxDrawSegs ? MaxDrawSegs*2 : 32;
|
|
ptrdiff_t firstofs = firstdrawseg - drawsegs;
|
|
drawsegs = (drawseg_t *)Realloc (drawsegs, newdrawsegs * sizeof(drawseg_t));
|
|
firstdrawseg = drawsegs + firstofs;
|
|
ds_p = drawsegs + MaxDrawSegs;
|
|
MaxDrawSegs = newdrawsegs;
|
|
DPrintf ("MaxDrawSegs increased to %d\n", MaxDrawSegs);
|
|
}
|
|
}
|
|
|
|
//
|
|
// R_CheckOpenings
|
|
//
|
|
|
|
void R_CheckOpenings (size_t need)
|
|
{
|
|
need += lastopening;
|
|
|
|
if (need > maxopenings)
|
|
{
|
|
do
|
|
maxopenings = maxopenings ? maxopenings*2 : 16384;
|
|
while (need > maxopenings);
|
|
openings = (short *)Realloc (openings, maxopenings * sizeof(*openings));
|
|
DPrintf ("MaxOpenings increased to %u\n", maxopenings);
|
|
}
|
|
}
|
|
|
|
//
|
|
// R_StoreWallRange
|
|
// A wall segment will be drawn between start and stop pixels (inclusive).
|
|
//
|
|
|
|
void R_StoreWallRange (int start, int stop)
|
|
{
|
|
bool maskedtexture = false;
|
|
|
|
#ifdef RANGECHECK
|
|
if (start >= viewwidth || start >= stop)
|
|
I_FatalError ("Bad R_StoreWallRange: %i to %i", start , stop);
|
|
#endif
|
|
|
|
// don't overflow and crash
|
|
R_CheckDrawSegs ();
|
|
|
|
if (!rw_prepped)
|
|
{
|
|
rw_prepped = true;
|
|
R_NewWall (true);
|
|
}
|
|
|
|
rw_offset = sidedef->textureoffset;
|
|
rw_light = rw_lightleft + rw_lightstep * (start - WallSX1);
|
|
|
|
ds_p->sx1 = WallSX1;
|
|
ds_p->sx2 = WallSX2;
|
|
ds_p->sz1 = WallSZ1;
|
|
ds_p->sz2 = WallSZ2;
|
|
ds_p->siz1 = (DWORD)DivScale32 (1, WallSZ1) >> 1;
|
|
ds_p->siz2 = (DWORD)DivScale32 (1, WallSZ2) >> 1;
|
|
ds_p->x1 = rw_x = start;
|
|
ds_p->x2 = stop-1;
|
|
ds_p->curline = curline;
|
|
rw_stopx = stop;
|
|
ds_p->bFogBoundary = false;
|
|
|
|
// killough 1/6/98, 2/1/98: remove limit on openings
|
|
R_CheckOpenings ((stop - start)*6);
|
|
|
|
ds_p->sprtopclip = ds_p->sprbottomclip = ds_p->maskedtexturecol = ds_p->swall = -1;
|
|
|
|
if (rw_markmirror)
|
|
{
|
|
WallMirrors.Push (ds_p - drawsegs);
|
|
ds_p->silhouette = SIL_BOTH;
|
|
}
|
|
else if (backsector == NULL)
|
|
{
|
|
ds_p->sprtopclip = R_NewOpening (stop - start);
|
|
ds_p->sprbottomclip = R_NewOpening (stop - start);
|
|
clearbufshort (openings + ds_p->sprtopclip, stop-start, viewheight);
|
|
memset (openings + ds_p->sprbottomclip, -1, (stop-start)*sizeof(short));
|
|
ds_p->silhouette = SIL_BOTH;
|
|
}
|
|
else
|
|
{
|
|
// two sided line
|
|
ds_p->silhouette = 0;
|
|
|
|
if (rw_frontfz1 > rw_backfz1 || rw_frontfz2 > rw_backfz2 ||
|
|
backsector->floorplane.ZatPoint (viewx, viewy) > viewz)
|
|
{
|
|
ds_p->silhouette = SIL_BOTTOM;
|
|
}
|
|
|
|
if (rw_frontcz1 < rw_backcz1 || rw_frontcz2 < rw_backcz2 ||
|
|
backsector->ceilingplane.ZatPoint (viewx, viewy) < viewz)
|
|
{
|
|
ds_p->silhouette |= SIL_TOP;
|
|
}
|
|
|
|
// killough 1/17/98: this test is required if the fix
|
|
// for the automap bug (r_bsp.c) is used, or else some
|
|
// sprites will be displayed behind closed doors. That
|
|
// fix prevents lines behind closed doors with dropoffs
|
|
// from being displayed on the automap.
|
|
//
|
|
// killough 4/7/98: make doorclosed external variable
|
|
|
|
{
|
|
extern int doorclosed; // killough 1/17/98, 2/8/98, 4/7/98
|
|
if (doorclosed || (rw_backcz1 <= rw_frontfz1 && rw_backcz2 <= rw_frontfz2))
|
|
{
|
|
ds_p->sprbottomclip = R_NewOpening (stop - start);
|
|
memset (openings + ds_p->sprbottomclip, -1, (stop-start)*sizeof(short));
|
|
ds_p->silhouette |= SIL_BOTTOM;
|
|
}
|
|
if (doorclosed || (rw_backfz1 >= rw_frontcz1 && rw_backfz2 >= rw_frontcz2))
|
|
{ // killough 1/17/98, 2/8/98
|
|
ds_p->sprtopclip = R_NewOpening (stop - start);
|
|
clearbufshort (openings + ds_p->sprtopclip, stop - start, viewheight);
|
|
ds_p->silhouette |= SIL_TOP;
|
|
}
|
|
}
|
|
|
|
// allocate space for masked texture tables, if needed
|
|
// [RH] Don't just allocate the space; fill it in too.
|
|
if ((TexMan(sidedef->midtexture)->UseType != FTexture::TEX_Null || IsFogBoundary (frontsector, backsector)) &&
|
|
(rw_ceilstat != 12 || sidedef->toptexture == 0) &&
|
|
(rw_floorstat != 3 || sidedef->bottomtexture == 0) &&
|
|
(WallSZ1 >= TOO_CLOSE_Z && WallSZ2 >= TOO_CLOSE_Z))
|
|
{
|
|
fixed_t *swal;
|
|
short *lwal;
|
|
int i;
|
|
|
|
maskedtexture = true;
|
|
|
|
ds_p->bFogBoundary = IsFogBoundary (frontsector, backsector);
|
|
if (sidedef->midtexture != 0)
|
|
{
|
|
ds_p->maskedtexturecol = R_NewOpening (stop - start);
|
|
ds_p->swall = R_NewOpening ((stop - start) * 2);
|
|
|
|
lwal = openings + ds_p->maskedtexturecol;
|
|
swal = (fixed_t *)(openings + ds_p->swall);
|
|
int scaley = TexMan(sidedef->midtexture)->ScaleY ?
|
|
TexMan(sidedef->midtexture)->ScaleY : ty;
|
|
int xoffset = rw_offset;
|
|
for (i = start; i < stop; i++)
|
|
{
|
|
*lwal++ = (short)((lwall[i] + xoffset) >> FRACBITS);
|
|
*swal++ = MulScale5 (swall[i], scaley);
|
|
}
|
|
|
|
fixed_t istart = *((fixed_t *)(openings + ds_p->swall));
|
|
fixed_t iend = *(swal - 1);
|
|
|
|
if (istart < 3 && istart >= 0) istart = 3;
|
|
if (istart > -3 && istart < 0) istart = -3;
|
|
if (iend < 3 && iend >= 0) iend = 3;
|
|
if (iend > -3 && iend < 0) iend = -3;
|
|
istart = DivScale32 (1, istart);
|
|
iend = DivScale32 (1, iend);
|
|
ds_p->iscale = istart;
|
|
|
|
if (stop - start > 1)
|
|
{
|
|
ds_p->iscalestep = (iend - istart) / (stop - start - 1);
|
|
}
|
|
else
|
|
{
|
|
ds_p->iscalestep = 0;
|
|
}
|
|
}
|
|
ds_p->light = rw_light;
|
|
ds_p->lightstep = rw_lightstep;
|
|
ds_p->shade = wallshade;
|
|
|
|
if (ds_p->bFogBoundary || ds_p->maskedtexturecol != -1)
|
|
{
|
|
InterestingDrawsegs.Push (ds_p - drawsegs);
|
|
}
|
|
}
|
|
}
|
|
|
|
// render it
|
|
if (markceiling)
|
|
{
|
|
if (ceilingplane)
|
|
{ // killough 4/11/98: add NULL ptr checks
|
|
ceilingplane = R_CheckPlane (ceilingplane, start, stop-1);
|
|
}
|
|
else
|
|
{
|
|
markceiling = false;
|
|
}
|
|
}
|
|
|
|
if (markfloor)
|
|
{
|
|
if (floorplane)
|
|
{ // killough 4/11/98: add NULL ptr checks
|
|
floorplane = R_CheckPlane (floorplane, start, stop-1);
|
|
}
|
|
else
|
|
{
|
|
markfloor = false;
|
|
}
|
|
}
|
|
|
|
R_RenderSegLoop ();
|
|
|
|
// save sprite clipping info
|
|
if ( ((ds_p->silhouette & SIL_TOP) || maskedtexture) && ds_p->sprtopclip == -1)
|
|
{
|
|
ds_p->sprtopclip = R_NewOpening (stop - start);
|
|
memcpy (openings + ds_p->sprtopclip, &ceilingclip[start], sizeof(short)*(stop-start));
|
|
}
|
|
|
|
if ( ((ds_p->silhouette & SIL_BOTTOM) || maskedtexture) && ds_p->sprbottomclip == -1)
|
|
{
|
|
ds_p->sprbottomclip = R_NewOpening (stop - start);
|
|
memcpy (openings + ds_p->sprbottomclip, &floorclip[start], sizeof(short)*(stop-start));
|
|
}
|
|
|
|
if (maskedtexture && curline->sidedef->midtexture != 0)
|
|
{
|
|
ds_p->silhouette |= SIL_TOP | SIL_BOTTOM;
|
|
}
|
|
|
|
// [RH] Draw any decals bound to the seg
|
|
for (DBaseDecal *decal = curline->sidedef->AttachedDecals; decal != NULL; decal = decal->WallNext)
|
|
{
|
|
R_RenderDecal (curline->sidedef, decal, ds_p, 0);
|
|
}
|
|
|
|
ds_p++;
|
|
}
|
|
|
|
int OWallMost (short *mostbuf, fixed_t z)
|
|
{
|
|
int bad, y, ix1, ix2, iy1, iy2;
|
|
fixed_t s1, s2, s3, s4;
|
|
|
|
z = -(z >> 4);
|
|
s1 = MulScale16 (globaluclip, WallSZ1); s2 = MulScale16 (globaluclip, WallSZ2);
|
|
s3 = MulScale16 (globaldclip, WallSZ1); s4 = MulScale16 (globaldclip, WallSZ2);
|
|
bad = (z<s1)+((z<s2)<<1)+((z>s3)<<2)+((z>s4)<<3);
|
|
|
|
if ((bad&3) == 3)
|
|
{
|
|
memset (&mostbuf[WallSX1], 0, (WallSX2 - WallSX1)*sizeof(mostbuf[0]));
|
|
return bad;
|
|
}
|
|
|
|
if ((bad&12) == 12)
|
|
{
|
|
clearbufshort (&mostbuf[WallSX1], WallSX2 - WallSX1, viewheight);
|
|
return bad;
|
|
}
|
|
|
|
ix1 = WallSX1; iy1 = WallSZ1;
|
|
ix2 = WallSX2; iy2 = WallSZ2;
|
|
|
|
if (bad & 3)
|
|
{
|
|
int t = DivScale30 (z-s1, s2-s1);
|
|
int inty = WallSZ1 + MulScale30 (WallSZ2 - WallSZ1, t);
|
|
int xcross = WallSX1 + Scale (MulScale30 (WallSZ2, t), WallSX2 - WallSX1, inty);
|
|
|
|
if ((bad & 3) == 2)
|
|
{
|
|
if (WallSX1 <= xcross) { iy2 = inty; ix2 = xcross; }
|
|
if (WallSX2 > xcross) memset (&mostbuf[xcross], 0, (WallSX2-xcross)*sizeof(mostbuf[0]));
|
|
}
|
|
else
|
|
{
|
|
if (xcross <= WallSX2) { iy1 = inty; ix1 = xcross; }
|
|
if (xcross > WallSX1) memset (&mostbuf[WallSX1], 0, (xcross-WallSX1)*sizeof(mostbuf[0]));
|
|
}
|
|
}
|
|
|
|
if (bad & 12)
|
|
{
|
|
int t = DivScale30 (z-s3, s4-s3);
|
|
int inty = WallSZ1 + MulScale30 (WallSZ2 - WallSZ1, t);
|
|
int xcross = WallSX1 + Scale (MulScale30 (WallSZ2, t), WallSX2 - WallSX1, inty);
|
|
|
|
if ((bad & 12) == 8)
|
|
{
|
|
if (WallSX1 <= xcross) { iy2 = inty; ix2 = xcross; }
|
|
if (WallSX2 > xcross) clearbufshort (&mostbuf[xcross], WallSX2 - xcross, viewheight);
|
|
}
|
|
else
|
|
{
|
|
if (xcross <= WallSX2) { iy1 = inty; ix1 = xcross; }
|
|
if (xcross > WallSX1) clearbufshort (&mostbuf[WallSX1], xcross - WallSX1, viewheight);
|
|
}
|
|
}
|
|
|
|
y = Scale (z, InvZtoScale, iy1);
|
|
if (ix2 == ix1)
|
|
{
|
|
mostbuf[ix1] = (short)((y + centeryfrac) >> FRACBITS);
|
|
}
|
|
else
|
|
{
|
|
fixed_t yinc = (Scale (z, InvZtoScale, iy2) - y) / (ix2 - ix1);
|
|
qinterpolatedown16short (&mostbuf[ix1], ix2-ix1, y + centeryfrac, yinc);
|
|
}
|
|
|
|
if (mostbuf[ix1] < 0) mostbuf[ix1] = 0;
|
|
else if (mostbuf[ix1] > viewheight) mostbuf[ix1] = (short)viewheight;
|
|
if (mostbuf[ix2] < 0) mostbuf[ix2] = 0;
|
|
else if (mostbuf[ix2] > viewheight) mostbuf[ix2] = (short)viewheight;
|
|
|
|
return bad;
|
|
}
|
|
|
|
int WallMost (short *mostbuf, const secplane_t &plane)
|
|
{
|
|
if ((plane.a | plane.b) == 0)
|
|
{
|
|
return OWallMost (mostbuf, ((plane.c < 0) ? plane.d : -plane.d) - viewz);
|
|
}
|
|
|
|
fixed_t x, y, den, z1, z2, oz1, oz2;
|
|
fixed_t s1, s2, s3, s4;
|
|
int bad, ix1, ix2, iy1, iy2;
|
|
|
|
if (MirrorFlags & RF_XFLIP)
|
|
{
|
|
x = curline->v2->x;
|
|
y = curline->v2->y;
|
|
if (WallSX1 == 0 && 0 != (den = WallTX1 - WallTX2 + WallTY1 - WallTY2))
|
|
{
|
|
int frac = SafeDivScale30 (WallTY1 + WallTX1, den);
|
|
x -= MulScale30 (frac, x - curline->v1->x);
|
|
y -= MulScale30 (frac, y - curline->v1->y);
|
|
}
|
|
z1 = viewz - plane.ZatPoint (x, y);
|
|
|
|
if (WallSX2 > WallSX1 + 1)
|
|
{
|
|
x = curline->v1->x;
|
|
y = curline->v1->y;
|
|
if (WallSX2 == viewwidth && 0 != (den = WallTX1 - WallTX2 - WallTY1 + WallTY2))
|
|
{
|
|
int frac = SafeDivScale30 (WallTY2 - WallTX2, den);
|
|
x += MulScale30 (frac, curline->v2->x - x);
|
|
y += MulScale30 (frac, curline->v2->y - y);
|
|
}
|
|
z2 = viewz - plane.ZatPoint (x, y);
|
|
}
|
|
else
|
|
{
|
|
z2 = z1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
x = curline->v1->x;
|
|
y = curline->v1->y;
|
|
if (WallSX1 == 0 && 0 != (den = WallTX1 - WallTX2 + WallTY1 - WallTY2))
|
|
{
|
|
int frac = SafeDivScale30 (WallTY1 + WallTX1, den);
|
|
x += MulScale30 (frac, curline->v2->x - x);
|
|
y += MulScale30 (frac, curline->v2->y - y);
|
|
}
|
|
z1 = viewz - plane.ZatPoint (x, y);
|
|
|
|
if (WallSX2 > WallSX1 + 1)
|
|
{
|
|
x = curline->v2->x;
|
|
y = curline->v2->y;
|
|
if (WallSX2 == viewwidth && 0 != (den = WallTX1 - WallTX2 - WallTY1 + WallTY2))
|
|
{
|
|
int frac = SafeDivScale30 (WallTY2 - WallTX2, den);
|
|
x -= MulScale30 (frac, x - curline->v1->x);
|
|
y -= MulScale30 (frac, y - curline->v1->y);
|
|
}
|
|
z2 = viewz - plane.ZatPoint (x, y);
|
|
}
|
|
else
|
|
{
|
|
z2 = z1;
|
|
}
|
|
}
|
|
|
|
s1 = MulScale12 (globaluclip, WallSZ1); s2 = MulScale12 (globaluclip, WallSZ2);
|
|
s3 = MulScale12 (globaldclip, WallSZ1); s4 = MulScale12 (globaldclip, WallSZ2);
|
|
bad = (z1<s1)+((z2<s2)<<1)+((z1>s3)<<2)+((z2>s4)<<3);
|
|
|
|
ix1 = WallSX1; ix2 = WallSX2;
|
|
iy1 = WallSZ1; iy2 = WallSZ2;
|
|
oz1 = z1; oz2 = z2;
|
|
|
|
if ((bad&3) == 3)
|
|
{
|
|
memset (&mostbuf[ix1], -1, (ix2-ix1)*sizeof(mostbuf[0]));
|
|
return bad;
|
|
}
|
|
|
|
if ((bad&12) == 12)
|
|
{
|
|
clearbufshort (&mostbuf[ix1], ix2-ix1, viewheight);
|
|
return bad;
|
|
}
|
|
|
|
if (bad&3)
|
|
{
|
|
//inty = intz / (globaluclip>>16)
|
|
int t = SafeDivScale30 (oz1-s1, s2-s1+oz1-oz2);
|
|
int inty = WallSZ1 + MulScale30 (WallSZ2-WallSZ1,t);
|
|
int intz = oz1 + MulScale30 (oz2-oz1,t);
|
|
int xcross = WallSX1 + Scale (MulScale30 (WallSZ2, t), WallSX2-WallSX1, inty);
|
|
|
|
//t = divscale30((x1<<4)-xcross*yb1[w],xcross*(yb2[w]-yb1[w])-((x2-x1)<<4));
|
|
//inty = yb1[w] + mulscale30(yb2[w]-yb1[w],t);
|
|
//intz = z1 + mulscale30(z2-z1,t);
|
|
|
|
if ((bad&3) == 2)
|
|
{
|
|
if (WallSX1 <= xcross) { z2 = intz; iy2 = inty; ix2 = xcross; }
|
|
memset (&mostbuf[xcross], 0, (WallSX2-xcross)*sizeof(mostbuf[0]));
|
|
}
|
|
else
|
|
{
|
|
if (xcross <= WallSX2) { z1 = intz; iy1 = inty; ix1 = xcross; }
|
|
memset (&mostbuf[WallSX1], 0, (xcross-WallSX1)*sizeof(mostbuf[0]));
|
|
}
|
|
}
|
|
|
|
if (bad&12)
|
|
{
|
|
//inty = intz / (globaldclip>>16)
|
|
int t = SafeDivScale30 (oz1-s3, s4-s3+oz1-oz2);
|
|
int inty = WallSZ1 + MulScale30 (WallSZ2-WallSZ1,t);
|
|
int intz = oz1 + MulScale30 (oz2-oz1,t);
|
|
int xcross = WallSX1 + Scale (MulScale30 (WallSZ2, t), WallSX2-WallSX1,inty);
|
|
|
|
//t = divscale30((x1<<4)-xcross*yb1[w],xcross*(yb2[w]-yb1[w])-((x2-x1)<<4));
|
|
//inty = yb1[w] + mulscale30(yb2[w]-yb1[w],t);
|
|
//intz = z1 + mulscale30(z2-z1,t);
|
|
|
|
if ((bad&12) == 8)
|
|
{
|
|
if (WallSX1 <= xcross) { z2 = intz; iy2 = inty; ix2 = xcross; }
|
|
if (WallSX2 > xcross) clearbufshort (&mostbuf[xcross], WallSX2-xcross, viewheight);
|
|
}
|
|
else
|
|
{
|
|
if (xcross <= WallSX2) { z1 = intz; iy1 = inty; ix1 = xcross; }
|
|
if (xcross > WallSX1) clearbufshort (&mostbuf[WallSX1], xcross-WallSX1, viewheight);
|
|
}
|
|
}
|
|
|
|
y = Scale (z1>>4, InvZtoScale, iy1);
|
|
if (ix2 == ix1)
|
|
{
|
|
mostbuf[ix1] = (short)((y + centeryfrac) >> FRACBITS);
|
|
}
|
|
else
|
|
{
|
|
fixed_t yinc = (Scale (z2>>4, InvZtoScale, iy2) - y) / (ix2-ix1);
|
|
qinterpolatedown16short (&mostbuf[ix1], ix2-ix1, y + centeryfrac,yinc);
|
|
}
|
|
|
|
if (mostbuf[ix1] < 0) mostbuf[ix1] = 0;
|
|
else if (mostbuf[ix1] > viewheight) mostbuf[ix1] = (short)viewheight;
|
|
if (mostbuf[ix2] < 0) mostbuf[ix2] = 0;
|
|
else if (mostbuf[ix2] > viewheight) mostbuf[ix2] = (short)viewheight;
|
|
|
|
return bad;
|
|
}
|
|
|
|
void PrepWall (fixed_t *swall, fixed_t *lwall, fixed_t walxrepeat)
|
|
{ // swall = scale, lwall = texturecolumn
|
|
int x;
|
|
float top, bot, i;
|
|
float xrepeat = (float)walxrepeat;
|
|
float ol, l, topinc, botinc;
|
|
|
|
i = (float)(WallSX1 - centerx);
|
|
top = WallUoverZorg + WallUoverZstep * i;
|
|
bot = WallInvZorg + WallInvZstep * i;
|
|
topinc = WallUoverZstep * 4.f;
|
|
botinc = WallInvZstep * 4.f;
|
|
|
|
x = WallSX1;
|
|
|
|
l = top / bot;
|
|
swall[x] = quickertoint (l * WallDepthScale + WallDepthOrg);
|
|
lwall[x] = quickertoint (l * xrepeat);
|
|
// As long as l is invalid, step one column at a time so that
|
|
// we can get as many correct texture columns as possible.
|
|
while (l > 1.0 && x+1 < WallSX2)
|
|
{
|
|
l = (top += WallUoverZstep) / (bot += WallInvZstep);
|
|
x++;
|
|
swall[x] = quickertoint (l * WallDepthScale + WallDepthOrg);
|
|
lwall[x] = quickertoint (l * xrepeat);
|
|
}
|
|
l *= xrepeat;
|
|
while (x+4 < WallSX2)
|
|
{
|
|
top += topinc; bot += botinc;
|
|
ol = l; l = top / bot;
|
|
swall[x+4] = quickertoint (l * WallDepthScale + WallDepthOrg);
|
|
lwall[x+4] = quickertoint (l *= xrepeat);
|
|
|
|
i = (ol+l) * 0.5f;
|
|
lwall[x+2] = quickertoint (i);
|
|
lwall[x+1] = quickertoint ((ol+i) * 0.5f);
|
|
lwall[x+3] = quickertoint ((l+i) * 0.5f);
|
|
swall[x+2] = ((swall[x]+swall[x+4])>>1);
|
|
swall[x+1] = ((swall[x]+swall[x+2])>>1);
|
|
swall[x+3] = ((swall[x+4]+swall[x+2])>>1);
|
|
x += 4;
|
|
}
|
|
if (x+2 < WallSX2)
|
|
{
|
|
top += topinc * 0.5f; bot += botinc * 0.5f;
|
|
ol = l; l = top / bot;
|
|
swall[x+2] = quickertoint (l * WallDepthScale + WallDepthOrg);
|
|
lwall[x+2] = quickertoint (l *= xrepeat);
|
|
|
|
lwall[x+1] = quickertoint ((l+ol)*0.5f);
|
|
swall[x+1] = (swall[x]+swall[x+2])>>1;
|
|
x += 2;
|
|
}
|
|
if (x+1 < WallSX2)
|
|
{
|
|
l = (top + WallUoverZstep) / (bot + WallInvZstep);
|
|
swall[x+1] = quickertoint (l * WallDepthScale + WallDepthOrg);
|
|
lwall[x+1] = quickertoint (l * xrepeat);
|
|
}
|
|
/*
|
|
for (x = WallSX1; x < WallSX2; x++)
|
|
{
|
|
frac = top / bot;
|
|
lwall[x] = quickertoint (frac * xrepeat);
|
|
swall[x] = quickertoint (frac * WallDepthScale + WallDepthOrg);
|
|
top += WallUoverZstep;
|
|
bot += WallInvZstep;
|
|
}
|
|
*/
|
|
|
|
// fix for rounding errors
|
|
fixed_t fix = (MirrorFlags & RF_XFLIP) ? walxrepeat-1 : 0;
|
|
if (WallSX1 > 0)
|
|
{
|
|
for (x = WallSX1; x < WallSX2; x++)
|
|
{
|
|
if ((unsigned)lwall[x] >= (unsigned)walxrepeat)
|
|
{
|
|
lwall[x] = fix;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
fix = walxrepeat - 1 - fix;
|
|
for (x = WallSX2-1; x >= WallSX1; x--)
|
|
{
|
|
if ((unsigned)lwall[x] >= (unsigned)walxrepeat)
|
|
{
|
|
lwall[x] = fix;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void PrepLWall (fixed_t *lwall, fixed_t walxrepeat)
|
|
{ // lwall = texturecolumn
|
|
int x;
|
|
float top, bot, i;
|
|
float xrepeat = (float)walxrepeat;
|
|
float ol, l, topinc, botinc;
|
|
|
|
i = (float)(WallSX1 - centerx);
|
|
top = WallUoverZorg + WallUoverZstep * i;
|
|
bot = WallInvZorg + WallInvZstep * i;
|
|
topinc = WallUoverZstep * 4.f;
|
|
botinc = WallInvZstep * 4.f;
|
|
|
|
x = WallSX1;
|
|
|
|
l = top / bot;
|
|
lwall[x] = quickertoint (l * xrepeat);
|
|
// As long as l is invalid, step one column at a time so that
|
|
// we can get as many correct texture columns as possible.
|
|
while (l > 1.0 && x+1 < WallSX2)
|
|
{
|
|
l = (top += WallUoverZstep) / (bot += WallInvZstep);
|
|
lwall[++x] = quickertoint (l * xrepeat);
|
|
}
|
|
l *= xrepeat;
|
|
while (x+4 < WallSX2)
|
|
{
|
|
top += topinc; bot += botinc;
|
|
ol = l; l = top / bot;
|
|
lwall[x+4] = quickertoint (l *= xrepeat);
|
|
|
|
i = (ol+l) * 0.5f;
|
|
lwall[x+2] = quickertoint (i);
|
|
lwall[x+1] = quickertoint ((ol+i) * 0.5f);
|
|
lwall[x+3] = quickertoint ((l+i) * 0.5f);
|
|
x += 4;
|
|
}
|
|
if (x+2 < WallSX2)
|
|
{
|
|
top += topinc * 0.5f; bot += botinc * 0.5f;
|
|
ol = l; l = top / bot;
|
|
lwall[x+2] = quickertoint (l *= xrepeat);
|
|
lwall[x+1] = quickertoint ((l+ol)*0.5f);
|
|
x += 2;
|
|
}
|
|
if (x+1 < WallSX2)
|
|
{
|
|
l = (top + WallUoverZstep) / (bot + WallInvZstep);
|
|
lwall[x+1] = quickertoint (l * xrepeat);
|
|
}
|
|
|
|
// fix for rounding errors
|
|
fixed_t fix = (MirrorFlags & RF_XFLIP) ? walxrepeat-1 : 0;
|
|
if (WallSX1 > 0)
|
|
{
|
|
for (x = WallSX1; x < WallSX2; x++)
|
|
{
|
|
if ((unsigned)lwall[x] >= (unsigned)walxrepeat)
|
|
{
|
|
lwall[x] = fix;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
fix = walxrepeat - 1 - fix;
|
|
for (x = WallSX2-1; x >= WallSX1; x--)
|
|
{
|
|
if ((unsigned)lwall[x] >= (unsigned)walxrepeat)
|
|
{
|
|
lwall[x] = fix;
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// pass = 0: when seg is first drawn
|
|
// = 1: drawing masked textures (including sprites)
|
|
// Currently, only pass = 0 is done or used
|
|
|
|
static void R_RenderDecal (side_t *wall, DBaseDecal *decal, drawseg_t *clipper, int pass)
|
|
{
|
|
fixed_t lx, ly, lx2, ly2, decalx, decaly;
|
|
int x1, x2;
|
|
fixed_t xscale, yscale;
|
|
fixed_t topoff;
|
|
byte flipx;
|
|
fixed_t zpos;
|
|
int needrepeat = 0;
|
|
sector_t *front, *back;
|
|
|
|
if (decal->RenderFlags & RF_INVISIBLE || !viewactive || decal->PicNum == 0xFFFF)
|
|
return;
|
|
|
|
// Determine actor z
|
|
zpos = decal->Z;
|
|
front = curline->frontsector;
|
|
back = (curline->backsector != NULL) ? curline->backsector : 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->ceilingtexz;
|
|
}
|
|
else
|
|
{
|
|
zpos = decal->Z + back->ceilingtexz;
|
|
}
|
|
break;
|
|
case RF_RELLOWER:
|
|
if (curline->linedef->flags & ML_DONTPEGBOTTOM)
|
|
{
|
|
zpos = decal->Z + front->ceilingtexz;
|
|
}
|
|
else
|
|
{
|
|
zpos = decal->Z + back->floortexz;
|
|
}
|
|
break;
|
|
case RF_RELMID:
|
|
if (curline->linedef->flags & ML_DONTPEGBOTTOM)
|
|
{
|
|
zpos = decal->Z + front->floortexz;
|
|
}
|
|
else
|
|
{
|
|
zpos = decal->Z + front->ceilingtexz;
|
|
}
|
|
}
|
|
|
|
xscale = decal->ScaleX;
|
|
yscale = decal->ScaleY;
|
|
|
|
WallSpriteTile = TexMan(decal->PicNum);
|
|
flipx = decal->RenderFlags & RF_XFLIP;
|
|
|
|
if (WallSpriteTile->UseType == FTexture::TEX_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.
|
|
|
|
x2 = WallSpriteTile->GetWidth();
|
|
x1 = WallSpriteTile->LeftOffset;
|
|
x2 = x2 - x1;
|
|
|
|
x1 *= xscale;
|
|
x2 *= xscale;
|
|
|
|
decal->GetXY (wall, decalx, decaly);
|
|
|
|
angle_t ang = R_PointToAngle2 (curline->v1->x, curline->v1->y, curline->v2->x, curline->v2->y) >> ANGLETOFINESHIFT;
|
|
lx = decalx - FixedMul (x1, finecosine[ang]) - viewx;
|
|
lx2 = decalx + FixedMul (x2, finecosine[ang]) - viewx;
|
|
ly = decaly - FixedMul (x1, finesine[ang]) - viewy;
|
|
ly2 = decaly + FixedMul (x2, finesine[ang]) - viewy;
|
|
|
|
WallTX1 = DMulScale20 (lx, viewsin, -ly, viewcos);
|
|
WallTX2 = DMulScale20 (lx2, viewsin, -ly2, viewcos);
|
|
|
|
WallTY1 = DMulScale20 (lx, viewtancos, ly, viewtansin);
|
|
WallTY2 = DMulScale20 (lx2, viewtancos, ly2, viewtansin);
|
|
|
|
if (MirrorFlags & RF_XFLIP)
|
|
{
|
|
int t = 256-WallTX1;
|
|
WallTX1 = 256-WallTX2;
|
|
WallTX2 = t;
|
|
swap (WallTY1, WallTY2);
|
|
}
|
|
|
|
if (WallTX1 >= -WallTY1)
|
|
{
|
|
if (WallTX1 > WallTY1) return; // left edge is off the right side
|
|
if (WallTY1 == 0) return;
|
|
x1 = (centerxfrac + Scale (WallTX1, centerxfrac, WallTY1)) >> FRACBITS;
|
|
if (WallTX1 >= 0) x1 = MIN (viewwidth, x1+1); // fix for signed divide
|
|
WallSZ1 = WallTY1;
|
|
}
|
|
else
|
|
{
|
|
if (WallTX2 < -WallTY2) return; // wall is off the left side
|
|
fixed_t den = WallTX1 - WallTX2 - WallTY2 + WallTY1;
|
|
if (den == 0) return;
|
|
x1 = 0;
|
|
WallSZ1 = WallTY1 + Scale (WallTY2 - WallTY1, WallTX1 + WallTY1, den);
|
|
}
|
|
|
|
if (WallSZ1 < TOO_CLOSE_Z)
|
|
return;
|
|
|
|
if (WallTX2 <= WallTY2)
|
|
{
|
|
if (WallTX2 < -WallTY2) return; // right edge is off the left side
|
|
if (WallTY2 == 0) return;
|
|
x2 = (centerxfrac + Scale (WallTX2, centerxfrac, WallTY2)) >> FRACBITS;
|
|
if (WallTX2 >= 0) x2 = MIN (viewwidth, x2+1); // fix for signed divide
|
|
WallSZ2 = WallTY2;
|
|
}
|
|
else
|
|
{
|
|
if (WallTX1 > WallTY1) return; // wall is off the right side
|
|
fixed_t den = WallTY2 - WallTY1 - WallTX2 + WallTX1;
|
|
if (den == 0) return;
|
|
x2 = viewwidth;
|
|
WallSZ2 = WallTY1 + Scale (WallTY2 - WallTY1, WallTX1 - WallTY1, den);
|
|
}
|
|
|
|
if (x1 >= x2 || x1 > clipper->x2 || x2 <= clipper->x1 || WallSZ2 < TOO_CLOSE_Z)
|
|
return;
|
|
|
|
if (MirrorFlags & RF_XFLIP)
|
|
{
|
|
WallUoverZorg = (float)WallTX2 * WallTMapScale;
|
|
WallUoverZstep = (float)(-WallTY2) * 32.f;
|
|
WallInvZorg = (float)(WallTX2 - WallTX1) * WallTMapScale;
|
|
WallInvZstep = (float)(WallTY1 - WallTY2) * 32.f;
|
|
}
|
|
else
|
|
{
|
|
WallUoverZorg = (float)WallTX1 * WallTMapScale;
|
|
WallUoverZstep = (float)(-WallTY1) * 32.f;
|
|
WallInvZorg = (float)(WallTX1 - WallTX2) * WallTMapScale;
|
|
WallInvZstep = (float)(WallTY2 - WallTY1) * 32.f;
|
|
}
|
|
WallDepthScale = WallInvZstep * WallTMapScale2;
|
|
WallDepthOrg = -WallUoverZstep * WallTMapScale2;
|
|
|
|
// Get the top and bottom clipping arrays
|
|
switch (decal->RenderFlags & RF_CLIPMASK)
|
|
{
|
|
case RF_CLIPFULL:
|
|
if (curline->backsector == NULL)
|
|
{
|
|
if (pass != 0)
|
|
{
|
|
return;
|
|
}
|
|
mceilingclip = walltop;
|
|
mfloorclip = wallbottom;
|
|
}
|
|
else if (pass == 0)
|
|
{
|
|
mceilingclip = walltop;
|
|
mfloorclip = ceilingclip;
|
|
needrepeat = 1;
|
|
}
|
|
else
|
|
{
|
|
mceilingclip = openings + clipper->sprtopclip - clipper->x1;
|
|
mfloorclip = openings + clipper->sprbottomclip - clipper->x1;
|
|
}
|
|
break;
|
|
|
|
case RF_CLIPUPPER:
|
|
if (pass != 0)
|
|
{
|
|
return;
|
|
}
|
|
mceilingclip = walltop;
|
|
mfloorclip = ceilingclip;
|
|
break;
|
|
|
|
case RF_CLIPMID:
|
|
if (curline->backsector != NULL && pass != 2)
|
|
{
|
|
return;
|
|
}
|
|
mceilingclip = openings + clipper->sprtopclip - clipper->x1;
|
|
mfloorclip = openings + clipper->sprbottomclip - clipper->x1;
|
|
break;
|
|
|
|
case RF_CLIPLOWER:
|
|
if (pass != 0)
|
|
{
|
|
return;
|
|
}
|
|
mceilingclip = floorclip;
|
|
mfloorclip = wallbottom;
|
|
break;
|
|
}
|
|
|
|
topoff = WallSpriteTile->TopOffset << FRACBITS;
|
|
dc_texturemid = topoff + FixedDiv (zpos - viewz, yscale);
|
|
|
|
// Clip sprite to drawseg
|
|
if (x1 < clipper->x1)
|
|
{
|
|
x1 = clipper->x1;
|
|
}
|
|
if (x2 > clipper->x2)
|
|
{
|
|
x2 = clipper->x2 + 1;
|
|
}
|
|
if (x1 >= x2)
|
|
{
|
|
return;
|
|
}
|
|
|
|
swap (x1, WallSX1);
|
|
swap (x2, WallSX2);
|
|
PrepWall (swall, lwall, WallSpriteTile->GetWidth() << FRACBITS);
|
|
swap (x1, WallSX1);
|
|
swap (x2, WallSX2);
|
|
|
|
if (flipx)
|
|
{
|
|
int i;
|
|
int right = (WallSpriteTile->GetWidth() << FRACBITS) - 1;
|
|
|
|
for (i = x1; i < x2; i++)
|
|
{
|
|
lwall[i] = right - lwall[i];
|
|
}
|
|
}
|
|
|
|
// Prepare lighting
|
|
bool calclighting = false;
|
|
|
|
rw_light = rw_lightleft + (x1 - WallSX1) * rw_lightstep;
|
|
if (fixedlightlev)
|
|
dc_colormap = basecolormap + fixedlightlev;
|
|
else if (fixedcolormap)
|
|
dc_colormap = fixedcolormap;
|
|
else if (!foggy && (decal->RenderFlags & RF_FULLBRIGHT))
|
|
dc_colormap = basecolormap;
|
|
else
|
|
calclighting = true;
|
|
|
|
// Draw it
|
|
if (decal->RenderFlags & RF_YFLIP)
|
|
{
|
|
sprflipvert = true;
|
|
yscale = -yscale;
|
|
dc_texturemid = dc_texturemid - (WallSpriteTile->GetHeight() << FRACBITS);
|
|
}
|
|
else
|
|
{
|
|
sprflipvert = false;
|
|
}
|
|
|
|
// rw_offset is used as the texture's vertical scale
|
|
rw_offset = SafeDivScale30(1, yscale);
|
|
|
|
do
|
|
{
|
|
dc_x = x1;
|
|
ESPSResult mode;
|
|
|
|
mode = R_SetPatchStyle (decal->RenderStyle, decal->Alpha, decal->Translation, decal->AlphaColor);
|
|
|
|
if (mode == DontDraw)
|
|
{
|
|
needrepeat = 0;
|
|
}
|
|
else
|
|
{
|
|
int stop4;
|
|
|
|
if (mode == DoDraw0)
|
|
{ // 1 column at a time
|
|
stop4 = dc_x;
|
|
}
|
|
else // DoDraw1
|
|
{ // up to 4 columns at a time
|
|
stop4 = x2 & ~3;
|
|
}
|
|
|
|
while ((dc_x < stop4) && (dc_x & 3))
|
|
{
|
|
if (calclighting)
|
|
{ // calculate lighting
|
|
dc_colormap = basecolormap + (GETPALOOKUP (rw_light, wallshade) << COLORMAPSHIFT);
|
|
}
|
|
|
|
WallSpriteColumn (R_DrawMaskedColumn);
|
|
dc_x++;
|
|
}
|
|
|
|
while (dc_x < stop4)
|
|
{
|
|
if (calclighting)
|
|
{ // calculate lighting
|
|
dc_colormap = basecolormap + (GETPALOOKUP (rw_light, wallshade) << COLORMAPSHIFT);
|
|
}
|
|
rt_initcols();
|
|
for (int zz = 4; zz; --zz)
|
|
{
|
|
WallSpriteColumn (R_DrawMaskedColumnHoriz);
|
|
dc_x++;
|
|
}
|
|
rt_draw4cols (dc_x - 4);
|
|
}
|
|
|
|
while (dc_x < x2)
|
|
{
|
|
if (calclighting)
|
|
{ // calculate lighting
|
|
dc_colormap = basecolormap + (GETPALOOKUP (rw_light, wallshade) << COLORMAPSHIFT);
|
|
}
|
|
|
|
WallSpriteColumn (R_DrawMaskedColumn);
|
|
dc_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 = floorclip;
|
|
mfloorclip = wallbottom;
|
|
R_FinishSetPatchStyle ();
|
|
} while (needrepeat--);
|
|
|
|
colfunc = basecolfunc;
|
|
hcolfunc_post1 = rt_map1col;
|
|
hcolfunc_post4 = rt_map4cols;
|
|
|
|
R_FinishSetPatchStyle ();
|
|
}
|
|
|
|
static void WallSpriteColumn (void (*drawfunc)(const BYTE *column, const FTexture::Span *spans))
|
|
{
|
|
unsigned int texturecolumn = lwall[dc_x] >> FRACBITS;
|
|
dc_iscale = MulScale16 (swall[dc_x], rw_offset);
|
|
spryscale = SafeDivScale32 (1, dc_iscale);
|
|
if (sprflipvert)
|
|
sprtopscreen = centeryfrac + FixedMul (dc_texturemid, spryscale);
|
|
else
|
|
sprtopscreen = centeryfrac - FixedMul (dc_texturemid, spryscale);
|
|
|
|
const BYTE *column;
|
|
const FTexture::Span *spans;
|
|
column = WallSpriteTile->GetColumn (texturecolumn, &spans);
|
|
drawfunc (column, spans);
|
|
rw_light += rw_lightstep;
|
|
}
|