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Interesting consideration: flat angle wasn't used to determine seperate visplanes. This is obviously incorrect behaviour. Enabling this restriction makes flat alignment on slopes ALMOST work identically to normal, but not quite.

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Also, made the fudge a const, since it may as well be one.
This commit is contained in:
toasterbabe 2017-03-30 21:57:36 +01:00
parent d62a628346
commit b924a7d902
1 changed files with 3 additions and 4 deletions
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7
src/r_plane.c
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@ -486,6 +486,7 @@ visplane_t *R_FindPlane(fixed_t height, INT32 picnum, INT32 lightlevel,
&& !pfloor && !check->ffloor
&& check->viewx == viewx && check->viewy == viewy && check->viewz == viewz
&& check->viewangle == viewangle
&& check->plangle == plangle
#ifdef ESLOPE
&& check->slope == slope
#endif
@ -954,10 +955,11 @@ void R_DrawSinglePlane(visplane_t *pl)
floatv3_t p, m, n;
float ang;
float vx, vy, vz;
float fudge;
// compiler complains when P_GetZAt is used in FLOAT_TO_FIXED directly
// use this as a temp var to store P_GetZAt's return value each time
fixed_t temp;
// Okay, look, don't ask me why this works, but without this setup there's a disgusting-looking misalignment with the textures. -Red
const float fudge = ((1<<nflatshiftup)+1.0f)/(1<<nflatshiftup);
xoffs &= ((1 << (32-nflatshiftup))-1);
yoffs &= ((1 << (32-nflatshiftup))-1);
@ -965,9 +967,6 @@ void R_DrawSinglePlane(visplane_t *pl)
xoffs -= (pl->slope->o.x + (1 << (31-nflatshiftup))) & ~((1 << (32-nflatshiftup))-1);
yoffs += (pl->slope->o.y + (1 << (31-nflatshiftup))) & ~((1 << (32-nflatshiftup))-1);
// Okay, look, don't ask me why this works, but without this setup there's a disgusting-looking misalignment with the textures. -Red
fudge = ((1<<nflatshiftup)+1.0f)/(1<<nflatshiftup);
xoffs = (fixed_t)(xoffs*fudge);
yoffs = (fixed_t)(yoffs/fudge);