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Account for NULL colormaps in alpha-only code 447

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This commit is contained in:
mazmazz 2018-09-11 17:07:50 -04:00
parent f703c19502
commit 5523fc3a8d
1 changed files with 6 additions and 2 deletions
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8
src/p_spec.c
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@ -3267,7 +3267,9 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
// base rgba
alpha = (line->flags & ML_DONTPEGBOTTOM && line->sidenum[1] != 0xFFFF) ?
(sides[line->sidenum[1]].textureoffset >> FRACBITS)
: R_GetRgbaA(line->frontsector->extra_colormap->rgba);
: line->frontsector->extra_colormap ?
R_GetRgbaA(line->frontsector->extra_colormap->rgba)
: 0;
if (line->flags & ML_EFFECT3) // relative calc
alpha = max(min(R_GetRgbaA(sectors[secnum].extra_colormap->rgba) + alpha, 25), 0);
dest_colormap->rgba = (dest_colormap->rgba & 0xFFFFFF) + (alpha << 24);
@ -3275,7 +3277,9 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
// fade rgba
alpha = (line->flags & ML_DONTPEGBOTTOM && line->sidenum[1] != 0xFFFF) ?
(sides[line->sidenum[1]].rowoffset >> FRACBITS)
: R_GetRgbaA(line->frontsector->extra_colormap->fadergba);
: line->frontsector->extra_colormap ?
R_GetRgbaA(line->frontsector->extra_colormap->fadergba)
: 0;
if (line->flags & ML_EFFECT3) // relative calc
alpha = max(min(R_GetRgbaA(sectors[secnum].extra_colormap->fadergba) + alpha, 25), 0);
dest_colormap->fadergba = (dest_colormap->fadergba & 0xFFFFFF) + (alpha << 24);