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Merge branch 'master' into other-software-fixes

This commit is contained in:
Monster Iestyn 2016-06-13 21:13:51 +01:00
parent 305d32870f b4798538e2
commit df55019d40
1 changed files with 65 additions and 40 deletions
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39
src/r_segs.c
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@ -1453,9 +1453,11 @@ static void R_RenderSegLoop (void)
frontscale[rw_x] = rw_scale;
// draw the wall tiers
if (midtexture && yl <= yh && yh < vid.height && yh > 0)
if (midtexture)
{
// single sided line
if (yl <= yh && yh >= 0 && yl < viewheight)
{
dc_yl = yl;
dc_yh = yh;
dc_texturemid = rw_midtexturemid;
@ -1483,6 +1485,15 @@ static void R_RenderSegLoop (void)
floorclip[rw_x] = -1;
}
else
{
// note: don't use min/max macros, since casting from INT32 to INT16 is involved here
if (markceiling)
ceilingclip[rw_x] = (yh >= 0) ? ((yl > viewheight) ? (INT16)viewheight : (INT16)((INT16)yl - 1)) : -1;
if (markfloor)
floorclip[rw_x] = (yh < viewheight) ? ((yh < -1) ? -1 : (INT16)((INT16)yh + 1)) : (INT16)viewheight;
}
}
else
{
// two sided line
if (toptexture)
@ -1494,7 +1505,11 @@ static void R_RenderSegLoop (void)
if (mid >= floorclip[rw_x])
mid = floorclip[rw_x]-1;
if (mid >= yl && yh < vid.height && yh > 0)
if (mid >= yl) // back ceiling lower than front ceiling ?
{
if (yl >= viewheight) // entirely off bottom of screen
ceilingclip[rw_x] = (INT16)viewheight;
else if (mid >= 0) // safe to draw top texture
{
dc_yl = yl;
dc_yh = mid;
@ -1504,11 +1519,14 @@ static void R_RenderSegLoop (void)
colfunc();
ceilingclip[rw_x] = (INT16)mid;
}
else // entirely off top of screen
ceilingclip[rw_x] = -1;
}
else
ceilingclip[rw_x] = (INT16)((INT16)yl - 1);
ceilingclip[rw_x] = (yh >= 0) ? ((yl > viewheight) ? (INT16)viewheight : (INT16)((INT16)yl - 1)) : -1;
}
else if (markceiling) // no top wall
ceilingclip[rw_x] = (INT16)((INT16)yl - 1);
ceilingclip[rw_x] = (yh >= 0) ? ((yl > viewheight) ? (INT16)viewheight : (INT16)((INT16)yl - 1)) : -1;
if (bottomtexture)
{
@ -1520,7 +1538,11 @@ static void R_RenderSegLoop (void)
if (mid <= ceilingclip[rw_x])
mid = ceilingclip[rw_x]+1;
if (mid <= yh && yh < vid.height && yh > 0)
if (mid <= yh) // back floor higher than front floor ?
{
if (yh < 0) // entirely off top of screen
floorclip[rw_x] = -1;
else if (mid < viewheight) // safe to draw bottom texture
{
dc_yl = mid;
dc_yh = yh;
@ -1531,11 +1553,14 @@ static void R_RenderSegLoop (void)
colfunc();
floorclip[rw_x] = (INT16)mid;
}
else // entirely off bottom of screen
floorclip[rw_x] = (INT16)viewheight;
}
else
floorclip[rw_x] = (INT16)((INT16)yh + 1);
floorclip[rw_x] = (yh < viewheight) ? ((yh < -1) ? -1 : (INT16)((INT16)yh + 1)) : (INT16)viewheight;
}
else if (markfloor) // no bottom wall
floorclip[rw_x] = (INT16)((INT16)yh + 1);
floorclip[rw_x] = (yh < viewheight) ? ((yh < -1) ? -1 : (INT16)((INT16)yh + 1)) : (INT16)viewheight;
}
if (maskedtexture || numthicksides)