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Patch from Nuke.YKT to work around precision-based inaccuracy problems in Polymost TROR

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git-svn-id: https://svn.eduke32.com/eduke32@7846 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2019-07-26 21:54:48 +00:00 committed by Christoph Oelckers
parent 1d14991acc
commit f3e4dd4463
1 changed files with 31 additions and 1 deletions
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32
source/build/src/polymost.cpp
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@ -3147,7 +3147,7 @@ skip: ;
do
{
if ((vsp[i].cy[0] >= vsp[i].fy[0]) && (vsp[i].cy[1] >= vsp[i].fy[1]))
if ((vsp[i].cy[0]+DOMOST_OFFSET*2 >= vsp[i].fy[0]) && (vsp[i].cy[1]+DOMOST_OFFSET*2 >= vsp[i].fy[1]))
vsp[i].ctag = vsp[i].ftag = -1;
int const ni = vsp[i].n;
@ -5338,6 +5338,36 @@ void polymost_drawrooms()
polymost_domost(yax_vsp[yax_globalbunch*2+1][i].x, yax_vsp[yax_globalbunch*2+1][i].cy[0]+DOMOST_OFFSET, yax_vsp[yax_globalbunch*2+1][newi].x, yax_vsp[yax_globalbunch*2+1][i].cy[1]+DOMOST_OFFSET);
}
g_nodraw = nodrawbak;
#ifdef COMBINE_STRIPS
i = vsp[0].n;
do
{
int const ni = vsp[i].n;
//POGO: specially treat the viewport nodes so that we will never end up in a situation where we accidentally access the sentinel node
if (ni >= viewportNodeCount)
{
if (Bfabsf(vsp[i].cy[1]-vsp[ni].cy[0]) < 0.1f && Bfabsf(vsp[i].fy[1]-vsp[ni].fy[0]) < 0.1f)
{
float const dx = 1.f/(vsp[ni].x-vsp[i].x);
float const dx2 = 1.f/(vsp[vsp[ni].n].x-vsp[i].x);
float const cslop[2] = { vsp[i].cy[1]-vsp[i].cy[0], vsp[ni].cy[1]-vsp[i].cy[0] };
float const fslop[2] = { vsp[i].fy[1]-vsp[i].fy[0], vsp[ni].fy[1]-vsp[i].fy[0] };
if (Bfabsf(cslop[0]*dx-cslop[1]*dx2) < 0.001f && Bfabsf(fslop[0]*dx-fslop[1]*dx2) < 0.001f)
{
MERGE_NODES(i, ni);
continue;
}
}
}
i = ni;
}
while (i);
#undef MERGE_NODES
#endif
}
//else if (!g_nodraw) { videoEndDrawing(); return; }
#endif