qzdoom/src/gl/scene/gl_walls.cpp

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/*
** gl_wall.cpp
** Wall rendering preparation
**
**---------------------------------------------------------------------------
** Copyright 2000-2005 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
** 4. When not used as part of GZDoom or a GZDoom derivative, this code will be
** covered by the terms of the GNU Lesser General Public License as published
** by the Free Software Foundation; either version 2.1 of the License, or (at
** your option) any later version.
** 5. Full disclosure of the entire project's source code, except for third
** party libraries is mandatory. (NOTE: This clause is non-negotiable!)
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "gl/system/gl_system.h"
#include "p_local.h"
#include "p_lnspec.h"
#include "a_sharedglobal.h"
#include "g_level.h"
#include "templates.h"
#include "vectors.h"
#include "r_defs.h"
#include "r_sky.h"
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#include "r_utility.h"
#include "p_maputl.h"
#include "doomdata.h"
#include "portal.h"
#include "gl/system/gl_cvars.h"
#include "gl/renderer/gl_lightdata.h"
#include "gl/data/gl_data.h"
#include "gl/dynlights/gl_dynlight.h"
#include "gl/dynlights/gl_glow.h"
#include "gl/scene/gl_drawinfo.h"
#include "gl/scene/gl_portal.h"
#include "gl/textures/gl_material.h"
#include "gl/utility/gl_clock.h"
#include "gl/utility/gl_geometric.h"
#include "gl/utility/gl_templates.h"
#include "gl/shaders/gl_shader.h"
//==========================================================================
//
// Checks whether a wall should glow
//
//==========================================================================
void GLWall::CheckGlowing()
{
bottomglowcolor[3] = topglowcolor[3] = 0;
if (!gl_isFullbright(Colormap.LightColor, lightlevel))
{
FTexture *tex = TexMan[topflat];
if (tex != NULL && tex->isGlowing())
{
flags |= GLWall::GLWF_GLOW;
tex->GetGlowColor(topglowcolor);
topglowcolor[3] = tex->gl_info.GlowHeight;
}
tex = TexMan[bottomflat];
if (tex != NULL && tex->isGlowing())
{
flags |= GLWall::GLWF_GLOW;
tex->GetGlowColor(bottomglowcolor);
bottomglowcolor[3] = tex->gl_info.GlowHeight;
}
}
}
//==========================================================================
//
//
//
//==========================================================================
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void GLWall::PutWall(bool translucent)
{
int list;
static char passflag[] = {
0, //RENDERWALL_NONE,
1, //RENDERWALL_TOP, // unmasked
1, //RENDERWALL_M1S, // unmasked
2, //RENDERWALL_M2S, // depends on render and texture settings
1, //RENDERWALL_BOTTOM, // unmasked
3, //RENDERWALL_FOGBOUNDARY, // translucent
1, //RENDERWALL_MIRRORSURFACE, // only created from PORTALTYPE_MIRROR
2, //RENDERWALL_M2SNF, // depends on render and texture settings, no fog, used on mid texture lines with a fog boundary.
3, //RENDERWALL_COLOR, // translucent
2, //RENDERWALL_FFBLOCK // depends on render and texture settings
};
if (gltexture && gltexture->GetTransparent() && passflag[type] == 2)
{
translucent = true;
}
if (gl_fixedcolormap)
{
// light planes don't get drawn with fullbright rendering
if (gltexture == NULL) return;
Colormap.Clear();
}
CheckGlowing();
if (translucent) // translucent walls
{
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ViewDistance = (ViewPos - (seg->linedef->v1->fPos() + seg->linedef->Delta() / 2)).XY().LengthSquared();
if (gl.buffermethod == BM_DEFERRED) MakeVertices(true);
gl_drawinfo->drawlists[GLDL_TRANSLUCENT].AddWall(this);
}
else
{
if (gl.lightmethod == LM_SOFTWARE && !translucent)
{
if (PutWallCompat(passflag[type])) return;
}
bool masked;
masked = passflag[type] == 1 ? false : (gltexture && gltexture->isMasked());
if ((flags&GLWF_SKYHACK && type == RENDERWALL_M2S))
{
list = GLDL_MASKEDWALLSOFS;
}
else
{
list = masked ? GLDL_MASKEDWALLS : GLDL_PLAINWALLS;
}
if (gl.buffermethod == BM_DEFERRED) MakeVertices(false);
gl_drawinfo->drawlists[list].AddWall(this);
}
lightlist = NULL;
vertcount = 0; // make sure that following parts of the same linedef do not get this one's vertex info.
}
void GLWall::PutPortal(int ptype)
{
GLPortal * portal;
if (gl.buffermethod == BM_DEFERRED) MakeVertices(false);
switch (ptype)
{
// portals don't go into the draw list.
// Instead they are added to the portal manager
case PORTALTYPE_HORIZON:
horizon=UniqueHorizons.Get(horizon);
portal=GLPortal::FindPortal(horizon);
if (!portal) portal=new GLHorizonPortal(horizon);
portal->AddLine(this);
break;
case PORTALTYPE_SKYBOX:
portal = GLPortal::FindPortal(secportal);
if (!portal)
{
// either a regular skybox or an Eternity-style horizon
if (secportal->mType != PORTS_SKYVIEWPOINT) portal = new GLEEHorizonPortal(secportal);
else portal = new GLSkyboxPortal(secportal);
}
portal->AddLine(this);
break;
case PORTALTYPE_SECTORSTACK:
portal = this->portal->GetRenderState();
portal->AddLine(this);
break;
case PORTALTYPE_PLANEMIRROR:
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if (GLPortal::PlaneMirrorMode * planemirror->fC() <=0)
{
//@sync-portal
planemirror=UniquePlaneMirrors.Get(planemirror);
portal=GLPortal::FindPortal(planemirror);
if (!portal) portal=new GLPlaneMirrorPortal(planemirror);
portal->AddLine(this);
}
break;
case PORTALTYPE_MIRROR:
portal=GLPortal::FindPortal(seg->linedef);
if (!portal) portal=new GLMirrorPortal(seg->linedef);
portal->AddLine(this);
if (gl_mirror_envmap)
{
// draw a reflective layer over the mirror
type=RENDERWALL_MIRRORSURFACE;
gl_drawinfo->drawlists[GLDL_TRANSLUCENTBORDER].AddWall(this);
}
break;
case PORTALTYPE_LINETOLINE:
portal=GLPortal::FindPortal(lineportal);
if (!portal)
{
line_t *otherside = lineportal->lines[0]->mDestination;
if (otherside != NULL && otherside->portalindex < linePortals.Size())
{
gl_RenderActorsInPortal(linePortalToGL[otherside->portalindex]);
}
portal = new GLLineToLinePortal(lineportal);
}
portal->AddLine(this);
break;
case PORTALTYPE_SKY:
portal=GLPortal::FindPortal(sky);
if (!portal) portal=new GLSkyPortal(sky);
portal->AddLine(this);
break;
}
vertcount = 0;
}
//==========================================================================
//
// Sets 3D-floor lighting info
//
//==========================================================================
void GLWall::Put3DWall(lightlist_t * lightlist, bool translucent)
{
// only modify the light level if it doesn't originate from the seg's frontsector. This is to account for light transferring effects
if (lightlist->p_lightlevel != &seg->sidedef->sector->lightlevel)
{
lightlevel = gl_ClampLight(*lightlist->p_lightlevel);
}
// relative light won't get changed here. It is constant across the entire wall.
Colormap.CopyFrom3DLight(lightlist);
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PutWall(translucent);
}
//==========================================================================
//
// Splits a wall vertically if a 3D-floor
// creates different lighting across the wall
//
//==========================================================================
bool GLWall::SplitWallComplex(sector_t * frontsector, bool translucent, float& maplightbottomleft, float& maplightbottomright)
{
GLWall copyWall1, copyWall2;
// check for an intersection with the upper plane
if ((maplightbottomleft<ztop[0] && maplightbottomright>ztop[1]) ||
(maplightbottomleft>ztop[0] && maplightbottomright<ztop[1]))
{
float clen = MAX<float>(fabsf(glseg.x2 - glseg.x1), fabsf(glseg.y2 - glseg.y1));
float dch = ztop[1] - ztop[0];
float dfh = maplightbottomright - maplightbottomleft;
float coeff = (ztop[0] - maplightbottomleft) / (dfh - dch);
// check for inaccuracies - let's be a little generous here!
if (coeff*clen<.1f)
{
maplightbottomleft = ztop[0];
}
else if (coeff*clen>clen - .1f)
{
maplightbottomright = ztop[1];
}
else
{
// split the wall in two at the intersection and recursively split both halves
copyWall1 = copyWall2 = *this;
copyWall1.glseg.x2 = copyWall2.glseg.x1 = glseg.x1 + coeff * (glseg.x2 - glseg.x1);
copyWall1.glseg.y2 = copyWall2.glseg.y1 = glseg.y1 + coeff * (glseg.y2 - glseg.y1);
copyWall1.ztop[1] = copyWall2.ztop[0] = ztop[0] + coeff * (ztop[1] - ztop[0]);
copyWall1.zbottom[1] = copyWall2.zbottom[0] = zbottom[0] + coeff * (zbottom[1] - zbottom[0]);
copyWall1.glseg.fracright = copyWall2.glseg.fracleft = glseg.fracleft + coeff * (glseg.fracright - glseg.fracleft);
copyWall1.tcs[UPRGT].u = copyWall2.tcs[UPLFT].u = tcs[UPLFT].u + coeff * (tcs[UPRGT].u - tcs[UPLFT].u);
copyWall1.tcs[UPRGT].v = copyWall2.tcs[UPLFT].v = tcs[UPLFT].v + coeff * (tcs[UPRGT].v - tcs[UPLFT].v);
copyWall1.tcs[LORGT].u = copyWall2.tcs[LOLFT].u = tcs[LOLFT].u + coeff * (tcs[LORGT].u - tcs[LOLFT].u);
copyWall1.tcs[LORGT].v = copyWall2.tcs[LOLFT].v = tcs[LOLFT].v + coeff * (tcs[LORGT].v - tcs[LOLFT].v);
copyWall1.SplitWall(frontsector, translucent);
copyWall2.SplitWall(frontsector, translucent);
return true;
}
}
// check for an intersection with the lower plane
if ((maplightbottomleft<zbottom[0] && maplightbottomright>zbottom[1]) ||
(maplightbottomleft>zbottom[0] && maplightbottomright<zbottom[1]))
{
float clen = MAX<float>(fabsf(glseg.x2 - glseg.x1), fabsf(glseg.y2 - glseg.y1));
float dch = zbottom[1] - zbottom[0];
float dfh = maplightbottomright - maplightbottomleft;
float coeff = (zbottom[0] - maplightbottomleft) / (dfh - dch);
// check for inaccuracies - let's be a little generous here because there's
// some conversions between floats and fixed_t's involved
if (coeff*clen<.1f)
{
maplightbottomleft = zbottom[0];
}
else if (coeff*clen>clen - .1f)
{
maplightbottomright = zbottom[1];
}
else
{
// split the wall in two at the intersection and recursively split both halves
copyWall1 = copyWall2 = *this;
copyWall1.glseg.x2 = copyWall2.glseg.x1 = glseg.x1 + coeff * (glseg.x2 - glseg.x1);
copyWall1.glseg.y2 = copyWall2.glseg.y1 = glseg.y1 + coeff * (glseg.y2 - glseg.y1);
copyWall1.ztop[1] = copyWall2.ztop[0] = ztop[0] + coeff * (ztop[1] - ztop[0]);
copyWall1.zbottom[1] = copyWall2.zbottom[0] = zbottom[0] + coeff * (zbottom[1] - zbottom[0]);
copyWall1.glseg.fracright = copyWall2.glseg.fracleft = glseg.fracleft + coeff * (glseg.fracright - glseg.fracleft);
copyWall1.tcs[UPRGT].u = copyWall2.tcs[UPLFT].u = tcs[UPLFT].u + coeff * (tcs[UPRGT].u - tcs[UPLFT].u);
copyWall1.tcs[UPRGT].v = copyWall2.tcs[UPLFT].v = tcs[UPLFT].v + coeff * (tcs[UPRGT].v - tcs[UPLFT].v);
copyWall1.tcs[LORGT].u = copyWall2.tcs[LOLFT].u = tcs[LOLFT].u + coeff * (tcs[LORGT].u - tcs[LOLFT].u);
copyWall1.tcs[LORGT].v = copyWall2.tcs[LOLFT].v = tcs[LOLFT].v + coeff * (tcs[LORGT].v - tcs[LOLFT].v);
copyWall1.SplitWall(frontsector, translucent);
copyWall2.SplitWall(frontsector, translucent);
return true;
}
}
return false;
}
void GLWall::SplitWall(sector_t * frontsector, bool translucent)
{
GLWall copyWall1;
float maplightbottomleft;
float maplightbottomright;
unsigned int i;
int origlight = lightlevel;
FColormap origcm=Colormap;
TArray<lightlist_t> & lightlist=frontsector->e->XFloor.lightlist;
if (glseg.x1==glseg.x2 && glseg.y1==glseg.y2)
{
return;
}
//::SplitWall.Clock();
#ifdef _DEBUG
if (seg->linedef-lines==1)
{
int a = 0;
}
#endif
if (lightlist.Size()>1)
{
for(i=0;i<lightlist.Size()-1;i++)
{
if (i<lightlist.Size()-1)
{
secplane_t &p = lightlist[i+1].plane;
maplightbottomleft = p.ZatPoint(glseg.x1,glseg.y1);
maplightbottomright= p.ZatPoint(glseg.x2,glseg.y2);
}
else
{
maplightbottomright = maplightbottomleft = -32000;
}
// The light is completely above the wall!
if (maplightbottomleft>=ztop[0] && maplightbottomright>=ztop[1])
{
continue;
}
// check for an intersection with the upper and lower planes of the wall segment
if ((maplightbottomleft<ztop[0] && maplightbottomright>ztop[1]) ||
(maplightbottomleft > ztop[0] && maplightbottomright < ztop[1]) ||
(maplightbottomleft<zbottom[0] && maplightbottomright>zbottom[1]) ||
(maplightbottomleft > zbottom[0] && maplightbottomright < zbottom[1]))
{
if (!(gl.flags & RFL_NO_CLIP_PLANES))
{
// Use hardware clipping if this cannot be done cleanly.
this->lightlist = &lightlist;
PutWall(translucent);
goto out;
}
// crappy fallback if no clip planes available
else if (SplitWallComplex(frontsector, translucent, maplightbottomleft, maplightbottomright))
{
goto out;
}
}
// 3D floor is completely within this light
if (maplightbottomleft<=zbottom[0] && maplightbottomright<=zbottom[1])
{
Put3DWall(&lightlist[i], translucent);
goto out;
}
if (maplightbottomleft<=ztop[0] && maplightbottomright<=ztop[1] &&
(maplightbottomleft!=ztop[0] || maplightbottomright!=ztop[1]))
{
copyWall1=*this;
copyWall1.flags |= GLWF_NOSPLITLOWER;
flags |= GLWF_NOSPLITUPPER;
ztop[0]=copyWall1.zbottom[0]=maplightbottomleft;
ztop[1]=copyWall1.zbottom[1]=maplightbottomright;
tcs[UPLFT].v=copyWall1.tcs[LOLFT].v=copyWall1.tcs[UPLFT].v+
(maplightbottomleft-copyWall1.ztop[0])*(copyWall1.tcs[LOLFT].v-copyWall1.tcs[UPLFT].v)/(zbottom[0]-copyWall1.ztop[0]);
tcs[UPRGT].v=copyWall1.tcs[LORGT].v=copyWall1.tcs[UPRGT].v+
(maplightbottomright-copyWall1.ztop[1])*(copyWall1.tcs[LORGT].v-copyWall1.tcs[UPRGT].v)/(zbottom[1]-copyWall1.ztop[1]);
copyWall1.Put3DWall(&lightlist[i], translucent);
}
if (ztop[0]==zbottom[0] && ztop[1]==zbottom[1])
{
//::SplitWall.Unclock();
goto out;
}
}
}
Put3DWall(&lightlist[lightlist.Size()-1], translucent);
out:
lightlevel=origlight;
Colormap=origcm;
flags &= ~GLWF_NOSPLITUPPER;
this->lightlist = NULL;
//::SplitWall.Unclock();
}
//==========================================================================
//
//
//
//==========================================================================
bool GLWall::DoHorizon(seg_t * seg,sector_t * fs, vertex_t * v1,vertex_t * v2)
{
GLHorizonInfo hi;
lightlist_t * light;
// ZDoom doesn't support slopes in a horizon sector so I won't either!
2016-04-24 11:35:43 +00:00
ztop[1] = ztop[0] = fs->GetPlaneTexZ(sector_t::ceiling);
zbottom[1] = zbottom[0] = fs->GetPlaneTexZ(sector_t::floor);
2016-04-24 11:35:43 +00:00
if (ViewPos.Z < fs->GetPlaneTexZ(sector_t::ceiling))
{
2016-04-24 11:35:43 +00:00
if (ViewPos.Z > fs->GetPlaneTexZ(sector_t::floor))
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zbottom[1] = zbottom[0] = ViewPos.Z;
if (fs->GetTexture(sector_t::ceiling) == skyflatnum)
{
SkyPlane(fs, sector_t::ceiling, false);
}
else
{
hi.plane.GetFromSector(fs, true);
hi.lightlevel = gl_ClampLight(fs->GetCeilingLight());
hi.colormap = fs->ColorMap;
if (fs->e->XFloor.ffloors.Size())
{
light = P_GetPlaneLight(fs, &fs->ceilingplane, true);
if(!(fs->GetFlags(sector_t::ceiling)&PLANEF_ABSLIGHTING)) hi.lightlevel = gl_ClampLight(*light->p_lightlevel);
hi.colormap.LightColor = (light->extra_colormap)->Color;
}
if (gl_fixedcolormap) hi.colormap.Clear();
horizon = &hi;
PutPortal(PORTALTYPE_HORIZON);
}
ztop[1] = ztop[0] = zbottom[0];
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}
2016-04-24 11:35:43 +00:00
if (ViewPos.Z > fs->GetPlaneTexZ(sector_t::floor))
{
2016-04-24 11:35:43 +00:00
zbottom[1] = zbottom[0] = fs->GetPlaneTexZ(sector_t::floor);
if (fs->GetTexture(sector_t::floor) == skyflatnum)
{
SkyPlane(fs, sector_t::floor, false);
}
else
{
hi.plane.GetFromSector(fs, false);
hi.lightlevel = gl_ClampLight(fs->GetFloorLight());
hi.colormap = fs->ColorMap;
if (fs->e->XFloor.ffloors.Size())
{
light = P_GetPlaneLight(fs, &fs->floorplane, false);
if(!(fs->GetFlags(sector_t::floor)&PLANEF_ABSLIGHTING)) hi.lightlevel = gl_ClampLight(*light->p_lightlevel);
hi.colormap.LightColor = (light->extra_colormap)->Color;
}
if (gl_fixedcolormap) hi.colormap.Clear();
horizon = &hi;
PutPortal(PORTALTYPE_HORIZON);
}
}
return true;
}
//==========================================================================
//
//
//
//==========================================================================
bool GLWall::SetWallCoordinates(seg_t * seg, FTexCoordInfo *tci, float texturetop,
float topleft, float topright, float bottomleft, float bottomright, float t_ofs)
{
//
//
// set up texture coordinate stuff
//
//
float l_ul;
float texlength;
if (gltexture)
{
float length = seg->sidedef ? seg->sidedef->TexelLength : Dist2(glseg.x1, glseg.y1, glseg.x2, glseg.y2);
l_ul = tci->FloatToTexU(tci->TextureOffset(t_ofs));
texlength = tci->FloatToTexU(length);
}
else
{
tci = NULL;
l_ul = 0;
texlength = 0;
}
//
//
// set up coordinates for the left side of the polygon
//
// check left side for intersections
if (topleft >= bottomleft)
{
// normal case
ztop[0] = topleft;
zbottom[0] = bottomleft;
if (tci)
{
tcs[UPLFT].v = tci->FloatToTexV(-ztop[0] + texturetop);
tcs[LOLFT].v = tci->FloatToTexV(-zbottom[0] + texturetop);
}
}
else
{
// ceiling below floor - clip to the visible part of the wall
float dch = topright - topleft;
float dfh = bottomright - bottomleft;
float inter_x = (bottomleft - topleft) / (dch - dfh);
float inter_y = topleft + inter_x * dch;
glseg.x1 = glseg.x1 + inter_x * (glseg.x2 - glseg.x1);
glseg.y1 = glseg.y1 + inter_x * (glseg.y2 - glseg.y1);
glseg.fracleft = inter_x;
zbottom[0] = ztop[0] = inter_y;
if (tci)
{
tcs[LOLFT].v = tcs[UPLFT].v = tci->FloatToTexV(-ztop[0] + texturetop);
}
}
//
//
// set up coordinates for the right side of the polygon
//
// check left side for intersections
if (topright >= bottomright)
{
// normal case
ztop[1] = topright;
zbottom[1] = bottomright;
if (tci)
{
tcs[UPRGT].v = tci->FloatToTexV(-ztop[1] + texturetop);
tcs[LORGT].v = tci->FloatToTexV(-zbottom[1] + texturetop);
}
}
else
{
// ceiling below floor - clip to the visible part of the wall
float dch = topright - topleft;
float dfh = bottomright - bottomleft;
float inter_x = (bottomleft - topleft) / (dch - dfh);
float inter_y = topleft + inter_x * dch;
glseg.x2 = glseg.x1 + inter_x * (glseg.x2 - glseg.x1);
glseg.y2 = glseg.y1 + inter_x * (glseg.y2 - glseg.y1);
glseg.fracright = inter_x;
zbottom[1] = ztop[1] = inter_y;
if (tci)
{
tcs[LORGT].v = tcs[UPRGT].v = tci->FloatToTexV(-ztop[1] + texturetop);
}
}
tcs[UPLFT].u = tcs[LOLFT].u = l_ul + texlength * glseg.fracleft;
tcs[UPRGT].u = tcs[LORGT].u = l_ul + texlength * glseg.fracright;
if (gltexture != NULL)
{
bool normalize = false;
if (gltexture->tex->bHasCanvas) normalize = true;
else if (flags & GLT_CLAMPY)
{
// for negative scales we can get negative coordinates here.
normalize = (tcs[UPLFT].v > tcs[LOLFT].v || tcs[UPRGT].v > tcs[LORGT].v);
}
if (normalize)
{
// we have to shift the y-coordinate from [-1..0] to [0..1] when using texture clamping with a negative scale
tcs[UPLFT].v += 1.f;
tcs[UPRGT].v += 1.f;
tcs[LOLFT].v += 1.f;
tcs[LORGT].v += 1.f;
}
}
return true;
}
//==========================================================================
//
// Do some tweaks with the texture coordinates to reduce visual glitches
//
//==========================================================================
void GLWall::CheckTexturePosition()
{
float sub;
if (gltexture->tex->bHasCanvas) return;
// clamp texture coordinates to a reasonable range.
// Extremely large values can cause visual problems
if (tcs[UPLFT].v < tcs[UPRGT].v)
{
sub = float(xs_FloorToInt(tcs[UPLFT].v));
}
else
{
sub = float(xs_FloorToInt(tcs[UPRGT].v));
}
tcs[UPLFT].v -= sub;
tcs[UPRGT].v -= sub;
tcs[LOLFT].v -= sub;
tcs[LORGT].v -= sub;
if ((tcs[UPLFT].v == 0.f && tcs[UPRGT].v == 0.f && tcs[LOLFT].v <= 1.f && tcs[LORGT].v <= 1.f) ||
(tcs[UPLFT].v >= 0.f && tcs[UPRGT].v >= 0.f && tcs[LOLFT].v == 1.f && tcs[LORGT].v == 1.f))
{
flags |= GLT_CLAMPY;
}
// Check if this is marked as a skybox and if so, do the same for x.
// This intentionally only tests the seg's frontsector.
if (seg->frontsector->special == GLSector_Skybox)
{
sub = (float)xs_FloorToInt(tcs[UPLFT].u);
tcs[UPLFT].u -= sub;
tcs[UPRGT].u -= sub;
tcs[LOLFT].u -= sub;
tcs[LORGT].u -= sub;
if ((tcs[UPLFT].u == 0.f && tcs[LOLFT].u == 0.f && tcs[UPRGT].u <= 1.f && tcs[LORGT].u <= 1.f) ||
(tcs[UPLFT].u >= 0.f && tcs[LOLFT].u >= 0.f && tcs[UPRGT].u == 1.f && tcs[LORGT].u == 1.f))
{
flags |= GLT_CLAMPX;
}
}
}
//==========================================================================
//
// Handle one sided walls, upper and lower texture
//
//==========================================================================
void GLWall::DoTexture(int _type,seg_t * seg, int peg,
float ceilingrefheight,float floorrefheight,
float topleft,float topright,
float bottomleft,float bottomright,
float v_offset)
{
if (topleft<=bottomleft && topright<=bottomright) return;
// The Vertex values can be destroyed in this function and must be restored aferward!
GLSeg glsave=glseg;
float flh=ceilingrefheight-floorrefheight;
int texpos;
BYTE savedflags = flags;
switch (_type)
{
case RENDERWALL_TOP:
texpos = side_t::top;
break;
case RENDERWALL_BOTTOM:
texpos = side_t::bottom;
break;
default:
texpos = side_t::mid;
break;
}
FTexCoordInfo tci;
gltexture->GetTexCoordInfo(&tci, seg->sidedef, texpos);
type = _type;
float floatceilingref = ceilingrefheight + tci.RowOffset(seg->sidedef->GetTextureYOffset(texpos));
if (peg) floatceilingref += tci.mRenderHeight - flh - v_offset;
if (!SetWallCoordinates(seg, &tci, floatceilingref, topleft, topright, bottomleft, bottomright,
seg->sidedef->GetTextureXOffset(texpos))) return;
if (seg->linedef->special == Line_Mirror && _type == RENDERWALL_M1S && gl_mirrors)
{
PutPortal(PORTALTYPE_MIRROR);
}
else
{
CheckTexturePosition();
// Add this wall to the render list
sector_t * sec = sub ? sub->sector : seg->frontsector;
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if (sec->e->XFloor.lightlist.Size()==0 || gl_fixedcolormap) PutWall(false);
else SplitWall(sec, false);
}
glseg = glsave;
flags = savedflags;
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::DoMidTexture(seg_t * seg, bool drawfogboundary,
sector_t * front, sector_t * back,
sector_t * realfront, sector_t * realback,
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float fch1, float fch2, float ffh1, float ffh2,
float bch1, float bch2, float bfh1, float bfh2)
{
FTexCoordInfo tci;
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float topleft,bottomleft,topright,bottomright;
GLSeg glsave=glseg;
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float texturetop, texturebottom;
bool wrap = (seg->linedef->flags&ML_WRAP_MIDTEX) || (seg->sidedef->Flags&WALLF_WRAP_MIDTEX);
bool mirrory = false;
//
//
// Get the base coordinates for the texture
//
//
if (gltexture)
{
// Align the texture to the ORIGINAL sector's height!!
// At this point slopes don't matter because they don't affect the texture's z-position
gltexture->GetTexCoordInfo(&tci, seg->sidedef, side_t::mid);
if (tci.mRenderHeight < 0)
{
mirrory = true;
tci.mRenderHeight = -tci.mRenderHeight;
tci.mScale.Y = -tci.mScale.Y;
}
float rowoffset = tci.RowOffset(seg->sidedef->GetTextureYOffset(side_t::mid));
if ((seg->linedef->flags & ML_DONTPEGBOTTOM) >0)
{
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texturebottom = MAX(realfront->GetPlaneTexZ(sector_t::floor), realback->GetPlaneTexZ(sector_t::floor)) + rowoffset;
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texturetop = texturebottom + tci.mRenderHeight;
}
else
{
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texturetop = MIN(realfront->GetPlaneTexZ(sector_t::ceiling), realback->GetPlaneTexZ(sector_t::ceiling)) + rowoffset;
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texturebottom = texturetop - tci.mRenderHeight;
}
}
else texturetop=texturebottom=0;
//
//
// Depending on missing textures and possible plane intersections
// decide which planes to use for the polygon
//
//
if (realfront!=realback || drawfogboundary || wrap || realfront->GetHeightSec())
{
//
//
// Set up the top
//
//
FTexture * tex = TexMan(seg->sidedef->GetTexture(side_t::top));
if (!tex || tex->UseType==FTexture::TEX_Null)
{
if (front->GetTexture(sector_t::ceiling) == skyflatnum &&
back->GetTexture(sector_t::ceiling) == skyflatnum)
{
// intra-sky lines do not clip the texture at all if there's no upper texture
topleft = topright = texturetop;
}
else
{
// texture is missing - use the higher plane
topleft = MAX(bch1,fch1);
topright = MAX(bch2,fch2);
}
}
else if ((bch1>fch1 || bch2>fch2) &&
(seg->frontsector->GetTexture(sector_t::ceiling)!=skyflatnum || seg->backsector->GetTexture(sector_t::ceiling)==skyflatnum))
// (!((bch1<=fch1 && bch2<=fch2) || (bch1>=fch1 && bch2>=fch2)))
{
// Use the higher plane and let the geometry clip the extruding part
topleft = bch1;
topright = bch2;
}
else
{
// But not if there can be visual artifacts.
topleft = MIN(bch1,fch1);
topright = MIN(bch2,fch2);
}
//
//
// Set up the bottom
//
//
tex = TexMan(seg->sidedef->GetTexture(side_t::bottom));
if (!tex || tex->UseType==FTexture::TEX_Null)
{
// texture is missing - use the lower plane
bottomleft = MIN(bfh1,ffh1);
bottomright = MIN(bfh2,ffh2);
}
else if (bfh1<ffh1 || bfh2<ffh2) // (!((bfh1<=ffh1 && bfh2<=ffh2) || (bfh1>=ffh1 && bfh2>=ffh2)))
{
// the floor planes intersect. Use the backsector's floor for drawing so that
// drawing the front sector's plane clips the polygon automatically.
bottomleft = bfh1;
bottomright = bfh2;
}
else
{
// normal case - use the higher plane
bottomleft = MAX(bfh1,ffh1);
bottomright = MAX(bfh2,ffh2);
}
//
//
// if we don't need a fog sheet let's clip away some unnecessary parts of the polygon
//
//
if (!drawfogboundary && !wrap)
{
if (texturetop<topleft && texturetop<topright) topleft=topright=texturetop;
if (texturebottom>bottomleft && texturebottom>bottomright) bottomleft=bottomright=texturebottom;
}
}
else
{
//
//
// if both sides of the line are in the same sector and the sector
// doesn't have a Transfer_Heights special don't clip to the planes
// Clipping to the planes is not necessary and can even produce
// unwanted side effects.
//
//
topleft=topright=texturetop;
bottomleft=bottomright=texturebottom;
}
// nothing visible - skip the rest
if (topleft<=bottomleft && topright<=bottomright) return;
//
//
// set up texture coordinate stuff
//
//
float t_ofs = seg->sidedef->GetTextureXOffset(side_t::mid);
if (gltexture)
{
// First adjust the texture offset so that the left edge of the linedef is inside the range [0..1].
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float texwidth = tci.TextureAdjustWidth();
if (t_ofs >= 0)
{
float div = t_ofs / texwidth;
t_ofs = (div - xs_FloorToInt(div)) * texwidth;
}
else
{
float div = (-t_ofs) / texwidth;
t_ofs = texwidth - (div - xs_FloorToInt(div)) * texwidth;
}
// Now check whether the linedef is completely within the texture range of [0..1].
// If so we should use horizontal texture clamping to prevent filtering artifacts
// at the edges.
float textureoffset = tci.TextureOffset(t_ofs);
int righttex = int(textureoffset) + seg->sidedef->TexelLength;
if ((textureoffset == 0 && righttex <= tci.mRenderWidth) ||
(textureoffset >= 0 && righttex == tci.mRenderWidth))
{
flags |= GLT_CLAMPX;
}
else
{
flags &= ~GLT_CLAMPX;
}
if (!wrap)
{
flags |= GLT_CLAMPY;
}
}
if (mirrory)
{
tci.mRenderHeight = -tci.mRenderHeight;
tci.mScale.Y = -tci.mScale.Y;
}
SetWallCoordinates(seg, &tci, texturetop, topleft, topright, bottomleft, bottomright, t_ofs);
//
//
// draw fog sheet if required
//
//
if (drawfogboundary)
{
flags |= GLWF_NOSPLITUPPER|GLWF_NOSPLITLOWER;
type=RENDERWALL_FOGBOUNDARY;
FMaterial *savetex = gltexture;
gltexture = NULL;
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PutWall(true);
if (!savetex)
{
flags &= ~(GLWF_NOSPLITUPPER|GLWF_NOSPLITLOWER);
return;
}
gltexture = savetex;
type=RENDERWALL_M2SNF;
}
else type=RENDERWALL_M2S;
//
//
// set up alpha blending
//
//
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if (seg->linedef->alpha != 0)
{
bool translucent = false;
switch (seg->linedef->flags& ML_ADDTRANS)//TRANSBITS)
{
case 0:
RenderStyle=STYLE_Translucent;
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alpha = seg->linedef->alpha;
translucent =alpha < 1. || (gltexture && gltexture->GetTransparent());
break;
case ML_ADDTRANS:
RenderStyle=STYLE_Add;
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alpha = seg->linedef->alpha;
translucent=true;
break;
}
//
//
// for textures with large empty areas only the visible parts are drawn.
// If these textures come too close to the camera they severely affect performance
// if stacked closely together
// Recognizing vertical gaps is rather simple and well worth the effort.
//
//
FloatRect *splitrect;
int v = gltexture->GetAreas(&splitrect);
if (seg->frontsector == seg->backsector) flags |= GLWF_NOSPLIT; // we don't need to do vertex splits if a line has both sides in the same sector
if (v>0 && !drawfogboundary && !(seg->linedef->flags&ML_WRAP_MIDTEX))
{
// split the poly!
GLWall split;
int i,t=0;
float v_factor=(zbottom[0]-ztop[0])/(tcs[LOLFT].v-tcs[UPLFT].v);
// only split the vertical area of the polygon that does not contain slopes.
float splittopv = MAX(tcs[UPLFT].v, tcs[UPRGT].v);
float splitbotv = MIN(tcs[LOLFT].v, tcs[LORGT].v);
// this is split vertically into sections.
for(i=0;i<v;i++)
{
// the current segment is below the bottom line of the splittable area
// (IOW. the whole wall has been done)
if (splitrect[i].top>=splitbotv) break;
float splitbot=splitrect[i].top+splitrect[i].height;
// the current segment is above the top line of the splittable area
if (splitbot<=splittopv) continue;
split=*this;
// the top line of the current segment is inside the splittable area
// use the splitrect's top as top of this segment
// if not use the top of the remaining polygon
if (splitrect[i].top>splittopv)
{
split.ztop[0]=split.ztop[1]= ztop[0]+v_factor*(splitrect[i].top-tcs[UPLFT].v);
split.tcs[UPLFT].v=split.tcs[UPRGT].v=splitrect[i].top;
}
// the bottom line of the current segment is inside the splittable area
// use the splitrect's bottom as bottom of this segment
// if not use the bottom of the remaining polygon
if (splitbot<=splitbotv)
{
split.zbottom[0]=split.zbottom[1]=ztop[0]+v_factor*(splitbot-tcs[UPLFT].v);
split.tcs[LOLFT].v=split.tcs[LORGT].v=splitbot;
}
//
//
// Draw the stuff
//
//
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if (realfront->e->XFloor.lightlist.Size()==0 || gl_fixedcolormap) split.PutWall(translucent);
else split.SplitWall(realfront, translucent);
t=1;
}
render_texsplit+=t;
}
else
{
//
//
// Draw the stuff without splitting
//
//
2016-02-05 00:48:53 +00:00
if (realfront->e->XFloor.lightlist.Size()==0 || gl_fixedcolormap) PutWall(translucent);
else SplitWall(realfront, translucent);
}
alpha=1.0f;
}
// restore some values that have been altered in this function
glseg=glsave;
flags&=~(GLT_CLAMPX|GLT_CLAMPY|GLWF_NOSPLITUPPER|GLWF_NOSPLITLOWER);
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::BuildFFBlock(seg_t * seg, F3DFloor * rover,
2016-04-07 21:19:37 +00:00
float ff_topleft, float ff_topright,
float ff_bottomleft, float ff_bottomright)
{
side_t * mastersd = rover->master->sidedef[0];
float to;
lightlist_t * light;
bool translucent;
2016-04-07 21:19:37 +00:00
int savelight = lightlevel;
FColormap savecolor = Colormap;
float ul;
float texlength;
FTexCoordInfo tci;
if (rover->flags&FF_FOG)
{
if (!gl_fixedcolormap)
{
// this may not yet be done
2016-04-07 21:19:37 +00:00
light = P_GetPlaneLight(rover->target, rover->top.plane, true);
Colormap.Clear();
2016-04-07 21:19:37 +00:00
Colormap.LightColor = (light->extra_colormap)->Fade;
// the fog plane defines the light level, not the front sector
lightlevel = gl_ClampLight(*light->p_lightlevel);
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gltexture = NULL;
type = RENDERWALL_FFBLOCK;
}
else return;
}
else
{
2016-04-07 21:19:37 +00:00
if (rover->flags&FF_UPPERTEXTURE)
{
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gltexture = FMaterial::ValidateTexture(seg->sidedef->GetTexture(side_t::top), false, true);
if (!gltexture) return;
gltexture->GetTexCoordInfo(&tci, seg->sidedef, side_t::top);
}
2016-04-07 21:19:37 +00:00
else if (rover->flags&FF_LOWERTEXTURE)
{
gltexture = FMaterial::ValidateTexture(seg->sidedef->GetTexture(side_t::bottom), false, true);
if (!gltexture) return;
gltexture->GetTexCoordInfo(&tci, seg->sidedef, side_t::bottom);
}
2016-04-07 21:19:37 +00:00
else
{
gltexture = FMaterial::ValidateTexture(mastersd->GetTexture(side_t::mid), false, true);
if (!gltexture) return;
gltexture->GetTexCoordInfo(&tci, mastersd, side_t::mid);
}
2016-04-07 21:19:37 +00:00
to = (rover->flags&(FF_UPPERTEXTURE | FF_LOWERTEXTURE)) ? 0 : tci.TextureOffset(mastersd->GetTextureXOffset(side_t::mid));
ul = tci.FloatToTexU(to + tci.TextureOffset(seg->sidedef->GetTextureXOffset(side_t::mid)));
texlength = tci.FloatToTexU(seg->sidedef->TexelLength);
tcs[UPLFT].u = tcs[LOLFT].u = ul + texlength * glseg.fracleft;
tcs[UPRGT].u = tcs[LORGT].u = ul + texlength * glseg.fracright;
2016-04-07 21:19:37 +00:00
float rowoffset = tci.RowOffset(seg->sidedef->GetTextureYOffset(side_t::mid));
2016-04-07 21:19:37 +00:00
to = (rover->flags&(FF_UPPERTEXTURE | FF_LOWERTEXTURE)) ?
0.f : tci.RowOffset(mastersd->GetTextureYOffset(side_t::mid));
2016-04-07 21:19:37 +00:00
2016-04-24 11:35:43 +00:00
to += rowoffset + rover->top.model->GetPlaneTexZ(rover->top.isceiling);
2016-04-07 21:19:37 +00:00
tcs[UPLFT].v = tci.FloatToTexV(to - ff_topleft);
tcs[UPRGT].v = tci.FloatToTexV(to - ff_topright);
tcs[LOLFT].v = tci.FloatToTexV(to - ff_bottomleft);
tcs[LORGT].v = tci.FloatToTexV(to - ff_bottomright);
2016-04-07 21:19:37 +00:00
type = RENDERWALL_FFBLOCK;
CheckTexturePosition();
}
2016-04-07 21:19:37 +00:00
ztop[0] = ff_topleft;
ztop[1] = ff_topright;
zbottom[0] = ff_bottomleft;//-0.001f;
zbottom[1] = ff_bottomright;
2016-04-07 21:19:37 +00:00
if (rover->flags&(FF_TRANSLUCENT | FF_ADDITIVETRANS | FF_FOG))
{
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alpha = rover->alpha / 255.0f;
RenderStyle = (rover->flags&FF_ADDITIVETRANS) ? STYLE_Add : STYLE_Translucent;
translucent = true;
type = gltexture ? RENDERWALL_M2S : RENDERWALL_COLOR;
}
2016-04-07 21:19:37 +00:00
else
{
2016-04-07 21:19:37 +00:00
alpha = 1.0f;
RenderStyle = STYLE_Normal;
translucent = false;
}
2016-04-07 21:19:37 +00:00
sector_t * sec = sub ? sub->sector : seg->frontsector;
if (sec->e->XFloor.lightlist.Size() == 0 || gl_fixedcolormap) PutWall(translucent);
else SplitWall(sec, translucent);
2016-04-07 21:19:37 +00:00
alpha = 1.0f;
lightlevel = savelight;
Colormap = savecolor;
2016-04-07 21:19:37 +00:00
flags &= ~GLT_CLAMPY;
}
//==========================================================================
//
//
//
//==========================================================================
2016-04-07 21:19:37 +00:00
__forceinline void GLWall::GetPlanePos(F3DFloor::planeref *planeref, float &left, float &right)
{
2016-04-07 21:19:37 +00:00
left=planeref->plane->ZatPoint(vertexes[0]);
right=planeref->plane->ZatPoint(vertexes[1]);
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::InverseFloors(seg_t * seg, sector_t * frontsector,
2016-04-07 21:19:37 +00:00
float topleft, float topright,
float bottomleft, float bottomright)
{
2016-04-07 21:19:37 +00:00
TArray<F3DFloor *> & frontffloors = frontsector->e->XFloor.ffloors;
2016-04-07 21:19:37 +00:00
for (unsigned int i = 0; i < frontffloors.Size(); i++)
{
2016-04-07 21:19:37 +00:00
F3DFloor * rover = frontffloors[i];
if (!(rover->flags&FF_EXISTS)) continue;
if (!(rover->flags&FF_RENDERSIDES)) continue;
2016-04-07 21:19:37 +00:00
if (!(rover->flags&(FF_INVERTSIDES | FF_ALLSIDES))) continue;
2016-04-07 21:19:37 +00:00
float ff_topleft;
float ff_topright;
float ff_bottomleft;
float ff_bottomright;
GetPlanePos(&rover->top, ff_topleft, ff_topright);
GetPlanePos(&rover->bottom, ff_bottomleft, ff_bottomright);
// above ceiling
2016-04-07 21:19:37 +00:00
if (ff_bottomleft > topleft && ff_bottomright > topright) continue;
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if (ff_topleft > topleft && ff_topright > topright)
{
// the new section overlaps with the previous one - clip it!
2016-04-07 21:19:37 +00:00
ff_topleft = topleft;
ff_topright = topright;
}
2016-04-07 21:19:37 +00:00
if (ff_bottomleft < bottomleft && ff_bottomright < bottomright)
{
2016-04-07 21:19:37 +00:00
ff_bottomleft = bottomleft;
ff_bottomright = bottomright;
}
2016-04-07 21:19:37 +00:00
if (ff_topleft < ff_bottomleft || ff_topright < ff_bottomright) continue;
BuildFFBlock(seg, rover, ff_topleft, ff_topright, ff_bottomleft, ff_bottomright);
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topleft = ff_bottomleft;
topright = ff_bottomright;
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if (topleft <= bottomleft && topright <= bottomright) return;
}
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::ClipFFloors(seg_t * seg, F3DFloor * ffloor, sector_t * frontsector,
2016-04-07 21:19:37 +00:00
float topleft, float topright,
float bottomleft, float bottomright)
{
2016-04-07 21:19:37 +00:00
TArray<F3DFloor *> & frontffloors = frontsector->e->XFloor.ffloors;
2016-04-07 21:19:37 +00:00
int flags = ffloor->flags & (FF_SWIMMABLE | FF_TRANSLUCENT);
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for (unsigned int i = 0; i < frontffloors.Size(); i++)
{
2016-04-07 21:19:37 +00:00
F3DFloor * rover = frontffloors[i];
if (!(rover->flags&FF_EXISTS)) continue;
if (!(rover->flags&FF_RENDERSIDES)) continue;
2016-04-07 21:19:37 +00:00
if ((rover->flags&(FF_SWIMMABLE | FF_TRANSLUCENT)) != flags) continue;
2016-04-07 21:19:37 +00:00
float ff_topleft;
float ff_topright;
float ff_bottomleft;
float ff_bottomright;
GetPlanePos(&rover->top, ff_topleft, ff_topright);
// we are completely below the bottom so unless there are some
// (unsupported) intersections there won't be any more floors that
// could clip this one.
2016-04-07 21:19:37 +00:00
if (ff_topleft < bottomleft && ff_topright < bottomright) goto done;
GetPlanePos(&rover->bottom, ff_bottomleft, ff_bottomright);
// above top line?
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if (ff_bottomleft > topleft && ff_bottomright > topright) continue;
// overlapping the top line
2016-04-07 21:19:37 +00:00
if (ff_topleft >= topleft && ff_topright >= topright)
{
// overlapping with the entire range
2016-04-07 21:19:37 +00:00
if (ff_bottomleft <= bottomleft && ff_bottomright <= bottomright) return;
else if (ff_bottomleft > bottomleft && ff_bottomright > bottomright)
{
2016-04-07 21:19:37 +00:00
topleft = ff_bottomleft;
topright = ff_bottomright;
}
else
{
// an intersecting case.
// proper handling requires splitting but
// I don't need this right now.
}
}
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else if (ff_topleft <= topleft && ff_topright <= topright)
{
BuildFFBlock(seg, ffloor, topleft, topright, ff_topleft, ff_topright);
2016-04-07 21:19:37 +00:00
if (ff_bottomleft <= bottomleft && ff_bottomright <= bottomright) return;
topleft = ff_bottomleft;
topright = ff_bottomright;
}
else
{
// an intersecting case.
// proper handling requires splitting but
// I don't need this right now.
}
}
done:
// if the program reaches here there is one block left to draw
BuildFFBlock(seg, ffloor, topleft, topright, bottomleft, bottomright);
}
//==========================================================================
//
//
//
//==========================================================================
2016-04-07 21:19:37 +00:00
void GLWall::DoFFloorBlocks(seg_t * seg, sector_t * frontsector, sector_t * backsector,
float fch1, float fch2, float ffh1, float ffh2,
float bch1, float bch2, float bfh1, float bfh2)
{
2016-04-07 21:19:37 +00:00
TArray<F3DFloor *> & backffloors = backsector->e->XFloor.ffloors;
float topleft, topright, bottomleft, bottomright;
bool renderedsomething = false;
// if the ceilings intersect use the backsector's height because this sector's ceiling will
// obstruct the redundant parts.
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if (fch1 < bch1 && fch2 < bch2)
{
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topleft = fch1;
topright = fch2;
}
else
{
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topleft = bch1;
topright = bch2;
}
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if (ffh1 > bfh1 && ffh2 > bfh2)
{
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bottomleft = ffh1;
bottomright = ffh2;
}
else
{
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bottomleft = bfh1;
bottomright = bfh2;
}
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for (unsigned int i = 0; i < backffloors.Size(); i++)
{
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F3DFloor * rover = backffloors[i];
if (!(rover->flags&FF_EXISTS)) continue;
if (!(rover->flags&FF_RENDERSIDES) || (rover->flags&FF_INVERTSIDES)) continue;
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float ff_topleft;
float ff_topright;
float ff_bottomleft;
float ff_bottomright;
GetPlanePos(&rover->top, ff_topleft, ff_topright);
GetPlanePos(&rover->bottom, ff_bottomleft, ff_bottomright);
// completely above ceiling
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if (ff_bottomleft > topleft && ff_bottomright > topright && !renderedsomething) continue;
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if (ff_topleft > topleft && ff_topright > topright)
{
// the new section overlaps with the previous one - clip it!
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ff_topleft = topleft;
ff_topright = topright;
}
// do all inverse floors above the current one it there is a gap between the
// last 3D floor and this one.
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if (topleft > ff_topleft && topright > ff_topright)
InverseFloors(seg, frontsector, topleft, topright, ff_topleft, ff_topright);
// if translucent or liquid clip away adjoining parts of the same type of FFloors on the other side
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if (rover->flags&(FF_SWIMMABLE | FF_TRANSLUCENT))
ClipFFloors(seg, rover, frontsector, ff_topleft, ff_topright, ff_bottomleft, ff_bottomright);
else
BuildFFBlock(seg, rover, ff_topleft, ff_topright, ff_bottomleft, ff_bottomright);
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topleft = ff_bottomleft;
topright = ff_bottomright;
renderedsomething = true;
if (topleft <= bottomleft && topright <= bottomright) return;
}
// draw all inverse floors below the lowest one
if (frontsector->e->XFloor.ffloors.Size() > 0)
{
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if (topleft > bottomleft || topright > bottomright)
InverseFloors(seg, frontsector, topleft, topright, bottomleft, bottomright);
}
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::Process(seg_t *seg, sector_t * frontsector, sector_t * backsector)
{
vertex_t * v1, *v2;
float fch1;
float ffh1;
float fch2;
float ffh2;
float frefz, crefz;
sector_t * realfront;
sector_t * realback;
sector_t * segfront;
sector_t * segback;
#ifdef _DEBUG
if (seg->linedef - lines < 4)
{
int a = 0;
}
#endif
// note: we always have a valid sidedef and linedef reference when getting here.
this->seg = seg;
vertindex = 0;
vertcount = 0;
if ((seg->sidedef->Flags & WALLF_POLYOBJ) && seg->backsector)
{
// Textures on 2-sided polyobjects are aligned to the actual seg's sectors
segfront = realfront = seg->frontsector;
segback = realback = seg->backsector;
}
else
{
// Need these for aligning the textures
realfront = &sectors[frontsector->sectornum];
realback = backsector ? &sectors[backsector->sectornum] : NULL;
segfront = frontsector;
segback = backsector;
}
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frefz = realfront->GetPlaneTexZ(sector_t::floor);
crefz = realfront->GetPlaneTexZ(sector_t::ceiling);
if (seg->sidedef == seg->linedef->sidedef[0])
{
v1 = seg->linedef->v1;
v2 = seg->linedef->v2;
}
else
{
v1 = seg->linedef->v2;
v2 = seg->linedef->v1;
}
if (!(seg->sidedef->Flags & WALLF_POLYOBJ))
{
glseg.fracleft = 0;
glseg.fracright = 1;
if (gl_seamless)
{
if (v1->dirty) gl_RecalcVertexHeights(v1);
if (v2->dirty) gl_RecalcVertexHeights(v2);
}
}
else // polyobjects must be rendered per seg.
{
if (fabs(v1->fX() - v2->fX()) > fabs(v1->fY() - v2->fY()))
{
glseg.fracleft = (seg->v1->fX() - v1->fX()) / (v2->fX() - v1->fX());
glseg.fracright = (seg->v2->fX() - v1->fX()) / float(v2->fX() - v1->fX());
}
else
{
glseg.fracleft = (seg->v1->fY() - v1->fY()) / (v2->fY() - v1->fY());
glseg.fracright = (seg->v2->fY() - v1->fY()) / (v2->fY() - v1->fY());
}
v1 = seg->v1;
v2 = seg->v2;
}
vertexes[0] = v1;
vertexes[1] = v2;
glseg.x1 = v1->fX();
glseg.y1 = v1->fY();
glseg.x2 = v2->fX();
glseg.y2 = v2->fY();
Colormap = frontsector->ColorMap;
flags = 0;
dynlightindex = -1;
lightlist = NULL;
int rel = 0;
int orglightlevel = gl_ClampLight(frontsector->lightlevel);
bool foggy = (!gl_isBlack(Colormap.FadeColor) || level.flags&LEVEL_HASFADETABLE); // fog disables fake contrast
lightlevel = gl_ClampLight(seg->sidedef->GetLightLevel(foggy, orglightlevel, false, &rel));
if (orglightlevel >= 253) // with the software renderer fake contrast won't be visible above this.
{
rellight = 0;
}
else if (lightlevel - rel > 256) // the brighter part of fake contrast will be clamped so also clamp the darker part by the same amount for better looks
{
rellight = 256 - lightlevel + rel;
}
else
{
rellight = rel;
}
alpha = 1.0f;
RenderStyle = STYLE_Normal;
gltexture = NULL;
topflat = frontsector->GetTexture(sector_t::ceiling); // for glowing textures. These must be saved because
bottomflat = frontsector->GetTexture(sector_t::floor); // the sector passed here might be a temporary copy.
topplane = frontsector->ceilingplane;
bottomplane = frontsector->floorplane;
zfloor[0] = ffh1 = segfront->floorplane.ZatPoint(v1);
zfloor[1] = ffh2 = segfront->floorplane.ZatPoint(v2);
zceil[0] = fch1 = segfront->ceilingplane.ZatPoint(v1);
zceil[1] = fch2 = segfront->ceilingplane.ZatPoint(v2);
if (seg->linedef->special == Line_Horizon)
{
SkyNormal(frontsector, v1, v2);
DoHorizon(seg, frontsector, v1, v2);
return;
}
//return;
// [GZ] 3D middle textures are necessarily two-sided, even if they lack the explicit two-sided flag
if (!backsector || !(seg->linedef->flags&(ML_TWOSIDED | ML_3DMIDTEX))) // one sided
{
// sector's sky
SkyNormal(frontsector, v1, v2);
if (seg->linedef->isVisualPortal())
{
lineportal = linePortalToGL[seg->linedef->portalindex];
ztop[0] = zceil[0];
ztop[1] = zceil[1];
zbottom[0] = zfloor[0];
zbottom[1] = zfloor[1];
PutPortal(PORTALTYPE_LINETOLINE);
}
else if (seg->linedef->portaltransferred > 0)
{
SkyLine(frontsector, seg->linedef);
}
else
{
// normal texture
gltexture = FMaterial::ValidateTexture(seg->sidedef->GetTexture(side_t::mid), false, true);
if (gltexture)
{
DoTexture(RENDERWALL_M1S, seg, (seg->linedef->flags & ML_DONTPEGBOTTOM) > 0,
crefz, frefz, // must come from the original!
fch1, fch2, ffh1, ffh2, 0);
}
}
}
else // two sided
{
float bfh1 = segback->floorplane.ZatPoint(v1);
float bfh2 = segback->floorplane.ZatPoint(v2);
float bch1 = segback->ceilingplane.ZatPoint(v1);
float bch2 = segback->ceilingplane.ZatPoint(v2);
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SkyTop(seg, frontsector, backsector, v1, v2);
SkyBottom(seg, frontsector, backsector, v1, v2);
// upper texture
if (frontsector->GetTexture(sector_t::ceiling) != skyflatnum || backsector->GetTexture(sector_t::ceiling) != skyflatnum)
{
float bch1a = bch1, bch2a = bch2;
if (frontsector->GetTexture(sector_t::floor) != skyflatnum || backsector->GetTexture(sector_t::floor) != skyflatnum)
{
// the back sector's floor obstructs part of this wall
if (ffh1 > bch1 && ffh2 > bch2)
{
bch2a = ffh2;
bch1a = ffh1;
}
}
if (bch1a < fch1 || bch2a < fch2)
{
gltexture = FMaterial::ValidateTexture(seg->sidedef->GetTexture(side_t::top), false, true);
if (gltexture)
{
DoTexture(RENDERWALL_TOP, seg, (seg->linedef->flags & (ML_DONTPEGTOP)) == 0,
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crefz, realback->GetPlaneTexZ(sector_t::ceiling),
fch1, fch2, bch1a, bch2a, 0);
}
else if (!(seg->sidedef->Flags & WALLF_POLYOBJ))
{
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if ((frontsector->ceilingplane.isSlope() || backsector->ceilingplane.isSlope()) &&
frontsector->GetTexture(sector_t::ceiling) != skyflatnum &&
backsector->GetTexture(sector_t::ceiling) != skyflatnum)
{
gltexture = FMaterial::ValidateTexture(frontsector->GetTexture(sector_t::ceiling), false, true);
if (gltexture)
{
DoTexture(RENDERWALL_TOP, seg, (seg->linedef->flags & (ML_DONTPEGTOP)) == 0,
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crefz, realback->GetPlaneTexZ(sector_t::ceiling),
fch1, fch2, bch1a, bch2a, 0);
}
}
else
{
// skip processing if the back is a malformed subsector
if (seg->PartnerSeg != NULL && !(seg->PartnerSeg->Subsector->hacked & 4))
{
gl_drawinfo->AddUpperMissingTexture(seg->sidedef, sub, bch1a);
}
}
}
}
}
/* mid texture */
bool drawfogboundary = gl_CheckFog(frontsector, backsector);
FTexture *tex = TexMan(seg->sidedef->GetTexture(side_t::mid));
if (tex != NULL)
{
if (i_compatflags & COMPATF_MASKEDMIDTEX)
{
tex = tex->GetRawTexture();
}
gltexture = FMaterial::ValidateTexture(tex, false);
}
else gltexture = NULL;
if (gltexture || drawfogboundary)
{
DoMidTexture(seg, drawfogboundary, frontsector, backsector, realfront, realback,
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fch1, fch2, ffh1, ffh2, bch1, bch2, bfh1, bfh2);
}
if (seg->linedef->isVisualPortal() && seg->sidedef == seg->linedef->sidedef[0])
{
lineportal = linePortalToGL[seg->linedef->portalindex];
ztop[0] = bch1;
ztop[1] = bch2;
zbottom[0] = bfh1;
zbottom[1] = bfh2;
PutPortal(PORTALTYPE_LINETOLINE);
}
else if (backsector->e->XFloor.ffloors.Size() || frontsector->e->XFloor.ffloors.Size())
{
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DoFFloorBlocks(seg, frontsector, backsector, fch1, fch2, ffh1, ffh2, bch1, bch2, bfh1, bfh2);
}
/* bottom texture */
// the back sector's ceiling obstructs part of this wall (specially important for sky sectors)
if (fch1 < bfh1 && fch2 < bfh2)
{
bfh1 = fch1;
bfh2 = fch2;
}
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if (bfh1 > ffh1 || bfh2 > ffh2)
{
gltexture = FMaterial::ValidateTexture(seg->sidedef->GetTexture(side_t::bottom), false, true);
if (gltexture)
{
DoTexture(RENDERWALL_BOTTOM, seg, (seg->linedef->flags & ML_DONTPEGBOTTOM) > 0,
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realback->GetPlaneTexZ(sector_t::floor), frefz,
bfh1, bfh2, ffh1, ffh2,
frontsector->GetTexture(sector_t::ceiling) == skyflatnum && backsector->GetTexture(sector_t::ceiling) == skyflatnum ?
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frefz - realback->GetPlaneTexZ(sector_t::ceiling) :
frefz - crefz);
}
else if (!(seg->sidedef->Flags & WALLF_POLYOBJ))
{
if ((frontsector->floorplane.isSlope() || backsector->floorplane.isSlope()) &&
frontsector->GetTexture(sector_t::floor) != skyflatnum &&
backsector->GetTexture(sector_t::floor) != skyflatnum)
{
// render it anyway with the sector's floor texture. With a background sky
// there are ugly holes otherwise and slopes are simply not precise enough
// to mach in any case.
gltexture = FMaterial::ValidateTexture(frontsector->GetTexture(sector_t::floor), false, true);
if (gltexture)
{
DoTexture(RENDERWALL_BOTTOM, seg, (seg->linedef->flags & ML_DONTPEGBOTTOM) > 0,
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realback->GetPlaneTexZ(sector_t::floor), frefz,
bfh1, bfh2, ffh1, ffh2, frefz - crefz);
}
}
else if (backsector->GetTexture(sector_t::floor) != skyflatnum)
{
// skip processing if the back is a malformed subsector
if (seg->PartnerSeg != NULL && !(seg->PartnerSeg->Subsector->hacked & 4))
{
gl_drawinfo->AddLowerMissingTexture(seg->sidedef, sub, bfh1);
}
}
}
}
}
}
//==========================================================================
//
//
//
//==========================================================================
void GLWall::ProcessLowerMiniseg(seg_t *seg, sector_t * frontsector, sector_t * backsector)
{
if (frontsector->GetTexture(sector_t::floor) == skyflatnum) return;
lightlist = NULL;
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float ffh = frontsector->GetPlaneTexZ(sector_t::floor);
float bfh = backsector->GetPlaneTexZ(sector_t::floor);
vertindex = 0;
vertcount = 0;
if (bfh > ffh)
{
this->seg = seg;
this->sub = NULL;
vertex_t * v1 = seg->v1;
vertex_t * v2 = seg->v2;
vertexes[0] = v1;
vertexes[1] = v2;
glseg.x1 = v1->fX();
glseg.y1 = v1->fY();
glseg.x2 = v2->fX();
glseg.y2 = v2->fY();
glseg.fracleft = 0;
glseg.fracright = 1;
flags = 0;
// can't do fake contrast without a sidedef
lightlevel = gl_ClampLight(frontsector->lightlevel);
rellight = 0;
alpha = 1.0f;
RenderStyle = STYLE_Normal;
Colormap = frontsector->ColorMap;
topflat = frontsector->GetTexture(sector_t::ceiling); // for glowing textures
bottomflat = frontsector->GetTexture(sector_t::floor);
topplane = frontsector->ceilingplane;
bottomplane = frontsector->floorplane;
dynlightindex = -1;
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zfloor[0] = zfloor[1] = ffh;
gltexture = FMaterial::ValidateTexture(frontsector->GetTexture(sector_t::floor), false, true);
if (gltexture)
{
FTexCoordInfo tci;
type = RENDERWALL_BOTTOM;
gltexture->GetTexCoordInfo(&tci, 1.f, 1.f);
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SetWallCoordinates(seg, &tci, bfh, bfh, bfh, ffh, ffh, 0);
2016-02-05 00:48:53 +00:00
PutWall(false);
}
}
}