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Patch from Nuke.YKT to improve the appearance of slopes in software mode

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git-svn-id: https://svn.eduke32.com/eduke32@7714 1a8010ca-5511-0410-912e-c29ae57300e0
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terminx 2019-06-25 11:29:46 +00:00 committed by Christoph Oelckers
parent d5d1f0a0ea
commit 4a09e2a183
1 changed files with 14 additions and 14 deletions
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28
source/build/src/engine.cpp
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@ -2191,11 +2191,11 @@ static inline void hline(int32_t xr, int32_t yp)
int32_t const xl = lastx[yp];
if (xl > xr) return;
int32_t const r = horizlookup2[yp-globalhoriz+horizycent];
asm1 = (inthi_t)globalx1*r;
asm2 = (inthi_t)globaly2*r;
int32_t const s = getpalookupsh(mulscale16(r,globvis));
asm1 = (inthi_t)mulscale6(globalx1, r);
asm2 = (inthi_t)mulscale6(globaly2, r);
int32_t const s = getpalookupsh(mulscale22(r,globvis));
hlineasm4(xr-xl,0,s,(uint32_t)globalx2*r+globalypanning,(uint32_t)globaly1*r+globalxpanning,
hlineasm4(xr-xl,0,s,(uint32_t)mulscale6(globalx2,r)+globalypanning,(uint32_t)mulscale6(globaly1,r)+globalxpanning,
ylookup[yp]+xr+frameoffset);
}
@ -2207,18 +2207,18 @@ static inline void slowhline(int32_t xr, int32_t yp)
{
int32_t const xl = lastx[yp]; if (xl > xr) return;
int32_t const r = horizlookup2[yp-globalhoriz+horizycent];
asm1 = (inthi_t)globalx1*r;
asm2 = (inthi_t)globaly2*r;
asm1 = (inthi_t)mulscale6(globalx1, r);
asm2 = (inthi_t)mulscale6(globaly2, r);
asm3 = (intptr_t)globalpalwritten + getpalookupsh(mulscale16(r,globvis));
asm3 = (intptr_t)globalpalwritten + getpalookupsh(mulscale22(r,globvis));
if (!(globalorientation&256))
{
mhline(globalbufplc,(uint32_t)globaly1*r+globalxpanning-asm1*(xr-xl),(xr-xl)<<16,0L,
(uint32_t)globalx2*r+globalypanning-asm2*(xr-xl),ylookup[yp]+xl+frameoffset);
mhline(globalbufplc,(uint32_t)mulscale6(globaly1,r)+globalxpanning-asm1*(xr-xl),(xr-xl)<<16,0L,
(uint32_t)mulscale6(globalx2,r)+globalypanning-asm2*(xr-xl),ylookup[yp]+xl+frameoffset);
return;
}
thline(globalbufplc,(uint32_t)globaly1*r+globalxpanning-asm1*(xr-xl),(xr-xl)<<16,0L,
(uint32_t)globalx2*r+globalypanning-asm2*(xr-xl),ylookup[yp]+xl+frameoffset);
thline(globalbufplc,(uint32_t)mulscale6(globaly1,r)+globalxpanning-asm1*(xr-xl),(xr-xl)<<16,0L,
(uint32_t)mulscale6(globalx2,r)+globalypanning-asm2*(xr-xl),ylookup[yp]+xl+frameoffset);
}
@ -7128,18 +7128,18 @@ static void dosetaspect(void)
{
oxyaspect = xyaspect;
j = xyaspect*320;
horizlookup2[horizycent-1] = divscale26(131072,j);
horizlookup2[horizycent-1] = divscale32(131072,j);
for (i=0; i < horizycent-1; i++)
{
horizlookup[i] = divscale28(1, i-(horizycent-1));
horizlookup2[i] = divscale14(klabs(horizlookup[i]), j);
horizlookup2[i] = divscale20(klabs(horizlookup[i]), j);
}
for (i=horizycent; i < ydim*4-1; i++)
{
horizlookup[i] = divscale28(1, i-(horizycent-1));
horizlookup2[i] = divscale14(klabs(horizlookup[i]), j);
horizlookup2[i] = divscale20(klabs(horizlookup[i]), j);
}
}