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Render midtextures on two-sided lines with a z-buffer offset

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This will fix z-fighting issues when they overlap with FOFs.
This commit is contained in:
Hannu Hanhi 2021-01-10 21:33:54 +02:00
parent 8c97583779
commit d252f074b7
1 changed files with 20 additions and 16 deletions
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36
src/hardware/hw_main.c
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@ -831,7 +831,7 @@ static float HWR_ClipViewSegment(INT32 x, polyvertex_t *v1, polyvertex_t *v2)
//
// HWR_SplitWall
//
static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum, FSurfaceInfo* Surf, INT32 cutflag, ffloor_t *pfloor)
static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum, FSurfaceInfo* Surf, INT32 cutflag, ffloor_t *pfloor, FBITFIELD polyflags)
{
/* SoM: split up and light walls according to the
lightlist. This may also include leaving out parts
@ -969,11 +969,11 @@ static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum,
wallVerts[1].y = endbot;
if (cutflag & FF_FOG)
HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Fog|PF_NoTexture, true, lightnum, colormap);
HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Fog|PF_NoTexture|polyflags, true, lightnum, colormap);
else if (cutflag & FF_TRANSLUCENT)
HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Translucent, false, lightnum, colormap);
HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Translucent|polyflags, false, lightnum, colormap);
else
HWR_ProjectWall(wallVerts, Surf, PF_Masked, lightnum, colormap);
HWR_ProjectWall(wallVerts, Surf, PF_Masked|polyflags, lightnum, colormap);
top = bot;
endtop = endbot;
@ -998,11 +998,11 @@ static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum,
wallVerts[1].y = endbot;
if (cutflag & FF_FOG)
HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Fog|PF_NoTexture, true, lightnum, colormap);
HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Fog|PF_NoTexture|polyflags, true, lightnum, colormap);
else if (cutflag & FF_TRANSLUCENT)
HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Translucent, false, lightnum, colormap);
HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Translucent|polyflags, false, lightnum, colormap);
else
HWR_ProjectWall(wallVerts, Surf, PF_Masked, lightnum, colormap);
HWR_ProjectWall(wallVerts, Surf, PF_Masked|polyflags, lightnum, colormap);
}
// HWR_DrawSkyWall
@ -1183,7 +1183,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
wallVerts[1].y = FIXED_TO_FLOAT(worldhighslope);
if (gl_frontsector->numlights)
HWR_SplitWall(gl_frontsector, wallVerts, gl_toptexture, &Surf, FF_CUTLEVEL, NULL);
HWR_SplitWall(gl_frontsector, wallVerts, gl_toptexture, &Surf, FF_CUTLEVEL, NULL, 0);
else if (grTex->mipmap.flags & TF_TRANSPARENT)
HWR_AddTransparentWall(wallVerts, &Surf, gl_toptexture, PF_Environment, false, lightnum, colormap);
else
@ -1249,7 +1249,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
wallVerts[1].y = FIXED_TO_FLOAT(worldbottomslope);
if (gl_frontsector->numlights)
HWR_SplitWall(gl_frontsector, wallVerts, gl_bottomtexture, &Surf, FF_CUTLEVEL, NULL);
HWR_SplitWall(gl_frontsector, wallVerts, gl_bottomtexture, &Surf, FF_CUTLEVEL, NULL, 0);
else if (grTex->mipmap.flags & TF_TRANSPARENT)
HWR_AddTransparentWall(wallVerts, &Surf, gl_bottomtexture, PF_Environment, false, lightnum, colormap);
else
@ -1465,13 +1465,17 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
blendmode = HWR_TranstableToAlpha(gl_curline->polyseg->translucency, &Surf);
}
// Render midtextures on two-sided lines with a z-buffer offset.
// This will cause the midtexture appear on top, if a FOF overlaps with it.
blendmode |= PF_Decal;
if (gl_frontsector->numlights)
{
if (!(blendmode & PF_Masked))
HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_TRANSLUCENT, NULL);
HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_TRANSLUCENT, NULL, PF_Decal);
else
{
HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_CUTLEVEL, NULL);
HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_CUTLEVEL, NULL, PF_Decal);
}
}
else if (!(blendmode & PF_Masked))
@ -1554,7 +1558,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
// I don't think that solid walls can use translucent linedef types...
if (gl_frontsector->numlights)
HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_CUTLEVEL, NULL);
HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_CUTLEVEL, NULL, 0);
else
{
if (grTex->mipmap.flags & TF_TRANSPARENT)
@ -1717,7 +1721,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
Surf.PolyColor.s.alpha = HWR_FogBlockAlpha(rover->master->frontsector->lightlevel, rover->master->frontsector->extra_colormap);
if (gl_frontsector->numlights)
HWR_SplitWall(gl_frontsector, wallVerts, 0, &Surf, rover->flags, rover);
HWR_SplitWall(gl_frontsector, wallVerts, 0, &Surf, rover->flags, rover, 0);
else
HWR_AddTransparentWall(wallVerts, &Surf, 0, blendmode, true, lightnum, colormap);
}
@ -1732,7 +1736,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
}
if (gl_frontsector->numlights)
HWR_SplitWall(gl_frontsector, wallVerts, texnum, &Surf, rover->flags, rover);
HWR_SplitWall(gl_frontsector, wallVerts, texnum, &Surf, rover->flags, rover, 0);
else
{
if (blendmode != PF_Masked)
@ -1829,7 +1833,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
Surf.PolyColor.s.alpha = HWR_FogBlockAlpha(rover->master->frontsector->lightlevel, rover->master->frontsector->extra_colormap);
if (gl_backsector->numlights)
HWR_SplitWall(gl_backsector, wallVerts, 0, &Surf, rover->flags, rover);
HWR_SplitWall(gl_backsector, wallVerts, 0, &Surf, rover->flags, rover, 0);
else
HWR_AddTransparentWall(wallVerts, &Surf, 0, blendmode, true, lightnum, colormap);
}
@ -1844,7 +1848,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
}
if (gl_backsector->numlights)
HWR_SplitWall(gl_backsector, wallVerts, texnum, &Surf, rover->flags, rover);
HWR_SplitWall(gl_backsector, wallVerts, texnum, &Surf, rover->flags, rover, 0);
else
{
if (blendmode != PF_Masked)