OrdinaryMagician/vkdoom_m
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Add 1 pixel tall and wide texture support to the renderer

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- These require manual detection and overriding of the scaling factors to
  0, because a right shift of (32-0) bits wraps around to 0 and results in
  no shift at all rather than leaving the register zeroed out.
This commit is contained in:
Marisa Heit 2016-11-01 00:08:16 -05:00
commit 9388597443
4 changed files with 59 additions and 12 deletions
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18
src/r_segs.cpp
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@ -1104,6 +1104,12 @@ void wallscan (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *l
rw_pic->GetHeight(); // Make sure texture size is loaded
fracbits = 32 - rw_pic->HeightBits;
if (fracbits == 32)
{ // Hack for one pixel tall textures
fracbits = 0;
yrepeat = 0;
dc_texturemid = 0;
}
setupvline(fracbits);
xoffset = rw_offset;
basecolormapdata = basecolormap->Maps;
@ -1456,6 +1462,12 @@ void maskwallscan (int x1, int x2, short *uwal, short *dwal, float *swal, fixed_
rw_pic->GetHeight(); // Make sure texture size is loaded
fracbits = 32- rw_pic->HeightBits;
if (fracbits == 32)
{ // Hack for one pixel tall textures
fracbits = 0;
yrepeat = 0;
dc_texturemid = 0;
}
setupmvline(fracbits);
xoffset = rw_offset;
basecolormapdata = basecolormap->Maps;
@ -1631,6 +1643,12 @@ void transmaskwallscan (int x1, int x2, short *uwal, short *dwal, float *swal, f
rw_pic->GetHeight(); // Make sure texture size is loaded
fracbits = 32 - rw_pic->HeightBits;
if (fracbits == 32)
{ // Hack for one pixel tall textures
fracbits = 0;
yrepeat = 0;
dc_texturemid = 0;
}
setuptmvline(fracbits);
xoffset = rw_offset;
basecolormapdata = basecolormap->Maps;