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Neat Polymost y-shearing patch from Nuke.YKT

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git-svn-id: https://svn.eduke32.com/eduke32@7656 1a8010ca-5511-0410-912e-c29ae57300e0

# Conflicts:
#	source/build/src/polymost.cpp
This commit is contained in:
terminx 2019-05-19 03:54:52 +00:00 committed by Christoph Oelckers
parent 9ba2a3b719
commit 5e470e8a5b
1 changed files with 10 additions and 7 deletions
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17
source/build/src/polymost.cpp
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@ -1368,7 +1368,7 @@ static void resizeglcheck(void)
m[0][0] = 1.f;
m[1][1] = fxdimen / (fydimen * ratio);
m[2][0] = 2.f * ghoriz2 * gstang / fxdimen;
m[2][1] = 2.f * (ghoriz2 * gctang + ghorizcorrect) / fydimen;
m[2][1] = 2.f * (ghoriz2 * gctang + ghorizcorrect) / (fydimen * ratio);
m[2][2] = (farclip + nearclip) / (farclip - nearclip);
m[2][3] = 1.f;
m[3][2] = -(2.f * farclip * nearclip) / (farclip - nearclip);
@ -5431,15 +5431,18 @@ void polymost_drawrooms()
//global cos/sin height angle
if (r_yshearing)
{
gshang = 0.f;
gchang = 1.f;
ghoriz2 = (float)(ydimen>>1)-ghoriz-ghorizcorrect;
gshang = 0.f;
gchang = 1.f;
ghoriz2 = (float)(ydimen >> 1) - ghoriz - ghorizcorrect;
}
else
{
float r = (float)(ydimen>>1) - (ghoriz + ghorizcorrect);
gshang = r/Bsqrtf(r*r+ghalfx*ghalfx);
gchang = Bsqrtf(1.f-gshang*gshang);
float r = (float)(ydimen >> 1) - ghoriz - ghorizcorrect;
gshang = r / Bsqrtf(r * r + ghalfx * ghalfx);
gchang = Bsqrtf(1.f - gshang * gshang);
ghoriz2 = 0.f;
}
ghoriz2 = 0.f;
}
ghoriz = (float)(ydimen>>1);