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Sector texture scaling, part 1

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Lactozilla 2023-11-24 02:05:08 -03:00
parent 468b448316
commit da68f4c669
2 changed files with 25 additions and 5 deletions
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29
src/r_plane.c
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@ -169,6 +169,8 @@ static void R_MapPlane(INT32 y, INT32 x1, INT32 x2)
{
ds_xstep = FixedMul(planesin, planeheight) / span;
ds_ystep = FixedMul(planecos, planeheight) / span;
ds_xstep = FixedMul(currentplane->xscale, ds_xstep);
ds_ystep = FixedMul(currentplane->yscale, ds_ystep);
}
else
ds_xstep = ds_ystep = FRACUNIT;
@ -188,8 +190,8 @@ static void R_MapPlane(INT32 y, INT32 x1, INT32 x2)
// to step from those to the proper texture coordinate to start drawing at.
// That way, the texture coordinate is always calculated by its position
// on the screen and not by its position relative to the edge of the visplane.
ds_xfrac = xoffs + FixedMul(planecos, distance) + (x1 - centerx) * ds_xstep;
ds_yfrac = yoffs - FixedMul(planesin, distance) + (x1 - centerx) * ds_ystep;
ds_xfrac = xoffs + FixedMul(currentplane->xscale, FixedMul(planecos, distance)) + (x1 - centerx) * ds_xstep;
ds_yfrac = yoffs - FixedMul(currentplane->yscale, FixedMul(planesin, distance)) + (x1 - centerx) * ds_ystep;
// Water ripple effect
if (planeripple.active)
@ -431,8 +433,11 @@ visplane_t *R_FindPlane(fixed_t height, INT32 picnum, INT32 lightlevel,
}
}
(void)xscale;
(void)yscale;
if (!slope)
{
xoff = FixedMul(xoff, xscale);
yoff = FixedMul(yoff, yscale);
}
// This appears to fix the Nimbus Ruins sky bug.
if (picnum == skyflatnum && pfloor)
@ -449,6 +454,7 @@ visplane_t *R_FindPlane(fixed_t height, INT32 picnum, INT32 lightlevel,
if (height == check->height && picnum == check->picnum
&& lightlevel == check->lightlevel
&& xoff == check->xoffs && yoff == check->yoffs
&& xscale == check->xscale && yscale == check->yscale
&& planecolormap == check->extra_colormap
&& check->viewx == viewx && check->viewy == viewy && check->viewz == viewz
&& check->viewangle == viewangle
@ -474,6 +480,8 @@ visplane_t *R_FindPlane(fixed_t height, INT32 picnum, INT32 lightlevel,
check->maxx = -1;
check->xoffs = xoff;
check->yoffs = yoff;
check->xscale = xscale;
check->yscale = yscale;
check->extra_colormap = planecolormap;
check->ffloor = pfloor;
check->viewx = viewx;
@ -550,6 +558,8 @@ visplane_t *R_CheckPlane(visplane_t *pl, INT32 start, INT32 stop)
new_pl->lightlevel = pl->lightlevel;
new_pl->xoffs = pl->xoffs;
new_pl->yoffs = pl->yoffs;
new_pl->xscale = pl->xscale;
new_pl->yscale = pl->yscale;
new_pl->extra_colormap = pl->extra_colormap;
new_pl->ffloor = pl->ffloor;
new_pl->viewx = pl->viewx;
@ -816,7 +826,16 @@ void R_SetTiltedSpan(INT32 span)
static void R_SetSlopePlaneVectors(visplane_t *pl, INT32 y, fixed_t xoff, fixed_t yoff)
{
R_SetTiltedSpan(y);
R_SetSlopePlane(pl->slope, pl->viewx, pl->viewy, pl->viewz, xoff, yoff, pl->viewangle, pl->plangle);
if (pl->xscale != FRACUNIT || pl->yscale != FRACUNIT)
{
R_SetScaledSlopePlane(pl->slope, pl->viewx, pl->viewy, pl->viewz,
FixedDiv(FRACUNIT, pl->xscale), FixedDiv(FRACUNIT, pl->yscale),
xoff, yoff, pl->viewangle, pl->plangle);
}
else
R_SetSlopePlane(pl->slope, pl->viewx, pl->viewy, pl->viewz, xoff, yoff, pl->viewangle, pl->plangle);
R_CalculateSlopeVectors();
}

1
src/r_plane.h
View file

@ -49,6 +49,7 @@ typedef struct visplane_s
INT32 high, low; // R_PlaneBounds should set these.
fixed_t xoffs, yoffs; // Scrolling flats.
fixed_t xscale, yscale;
struct ffloor_s *ffloor;
polyobj_t *polyobj;