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Additive/Subtractive translation map support on midtextures

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This commit is contained in:
Sryder 2020-10-22 22:27:14 +01:00
parent b341cacb0a
commit 4a10861669
3 changed files with 26 additions and 7 deletions
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7
src/hardware/hw_main.c
View file

@ -1466,11 +1466,14 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
blendmode = PF_Translucent;
break;
default:
if (gl_linedef->alpha >= 0 && gl_linedef->alpha < FRACUNIT)
blendmode = HWR_TranstableToAlpha(R_GetLinedefTransTable(gl_linedef->alpha), &Surf);
{
transnum_t transtable = R_GetLinedefTransTable(gl_linedef);
if (transtable != NUMTRANSMAPS)
blendmode = HWR_TranstableToAlpha(transtable, &Surf);
else
blendmode = PF_Masked;
break;
}
}
if (gl_curline->polyseg && gl_curline->polyseg->translucency > 0)

24
src/r_segs.c
View file

@ -270,9 +270,23 @@ static void R_Render2sidedMultiPatchColumn(column_t *column)
}
}
transnum_t R_GetLinedefTransTable(fixed_t alpha)
transnum_t R_GetLinedefTransTable(line_t *ldef)
{
return (20*(FRACUNIT - alpha - 1) + FRACUNIT) >> (FRACBITS+1);
transnum_t transnum = NUMTRANSMAPS; // Send back NUMTRANSMAPS for none
fixed_t alpha = ldef->alpha;
if (alpha > 0 && alpha < FRACUNIT)
transnum = (20*(FRACUNIT - alpha - 1) + FRACUNIT) >> (FRACBITS+1);
else
{
switch (ldef->special)
{
case 910: transnum = tr_transadd; break;
case 911: transnum = tr_transsub; break;
default: transnum = NUMTRANSMAPS; break;
}
}
return transnum;
}
void R_RenderMaskedSegRange(drawseg_t *ds, INT32 x1, INT32 x2)
@ -289,6 +303,7 @@ void R_RenderMaskedSegRange(drawseg_t *ds, INT32 x1, INT32 x2)
INT32 times, repeats;
INT64 overflow_test;
INT32 range;
transnum_t transtable = NUMTRANSMAPS;
// Calculate light table.
// Use different light tables
@ -305,9 +320,10 @@ void R_RenderMaskedSegRange(drawseg_t *ds, INT32 x1, INT32 x2)
if (!ldef->alpha)
return;
if (ldef->alpha > 0 && ldef->alpha < FRACUNIT)
transtable = R_GetLinedefTransTable(ldef);
if (transtable != NUMTRANSMAPS)
{
dc_transmap = transtables + ((R_GetLinedefTransTable(ldef->alpha) - 1) << FF_TRANSSHIFT);
dc_transmap = transtables + ((transtable - 1) << FF_TRANSSHIFT);
colfunc = colfuncs[COLDRAWFUNC_FUZZY];
}

2
src/r_segs.h
View file

@ -18,7 +18,7 @@
#pragma interface
#endif
transnum_t R_GetLinedefTransTable(fixed_t alpha);
transnum_t R_GetLinedefTransTable(line_t *line);
void R_RenderMaskedSegRange(drawseg_t *ds, INT32 x1, INT32 x2);
void R_RenderThickSideRange(drawseg_t *ds, INT32 x1, INT32 x2, ffloor_t *pffloor);
void R_StoreWallRange(INT32 start, INT32 stop);