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Support for additive/subtractive translation maps on FOFs and Polyobjects

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Polyobjects set translucency to 11 for additive, and 12 for subtractive
FOFs using the regular translucency settings set the top texture to #900 for additive, and #901 for subtractive
This commit is contained in:
Sryder 2020-10-22 23:13:51 +01:00
parent 4a10861669
commit d311242a6e
5 changed files with 53 additions and 12 deletions
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50
src/hardware/hw_main.c
View file

@ -1735,10 +1735,17 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
{
FBITFIELD blendmode = PF_Masked;
if (rover->flags & FF_TRANSLUCENT && rover->alpha < 256)
if (rover->flags & FF_TRANSLUCENT)
{
blendmode = PF_Translucent;
Surf.PolyColor.s.alpha = (UINT8)rover->alpha-1 > 255 ? 255 : rover->alpha-1;
if (rover->alpha < 256)
{
blendmode = PF_Translucent;
Surf.PolyColor.s.alpha = (UINT8)(rover->alpha-1 > 255 ? 255 : rover->alpha-1);
}
else if (rover->alpha == FFLOOR_ALPHA_SPECIAL_ADDITIVE)
blendmode = PF_Additive;
else if (rover->alpha == FFLOOR_ALPHA_SPECIAL_SUBTRACTIVE)
blendmode = PF_Substractive;
}
if (gl_frontsector->numlights)
@ -1835,10 +1842,17 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
{
FBITFIELD blendmode = PF_Masked;
if (rover->flags & FF_TRANSLUCENT && rover->alpha < 256)
if (rover->flags & FF_TRANSLUCENT)
{
blendmode = PF_Translucent;
Surf.PolyColor.s.alpha = (UINT8)rover->alpha-1 > 255 ? 255 : rover->alpha-1;
if (rover->alpha < 256)
{
blendmode = PF_Translucent;
Surf.PolyColor.s.alpha = (UINT8)(rover->alpha-1 > 255 ? 255 : rover->alpha-1);
}
else if (rover->alpha == FFLOOR_ALPHA_SPECIAL_ADDITIVE)
blendmode = PF_Additive;
else if (rover->alpha == FFLOOR_ALPHA_SPECIAL_SUBTRACTIVE)
blendmode = PF_Substractive;
}
if (gl_backsector->numlights)
@ -3098,8 +3112,16 @@ static void HWR_Subsector(size_t num)
alpha, rover->master->frontsector, PF_Fog|PF_NoTexture,
true, rover->master->frontsector->extra_colormap);
}
else if (rover->flags & FF_TRANSLUCENT && rover->alpha < 256) // SoM: Flags are more efficient
else if (rover->flags & FF_TRANSLUCENT
&& (rover->alpha < 256
|| rover->alpha == FFLOOR_ALPHA_SPECIAL_ADDITIVE || rover->alpha == FFLOOR_ALPHA_SPECIAL_SUBTRACTIVE)) // SoM: Flags are more efficient
{
FBITFIELD blendmode = PF_Translucent;
if (rover->alpha == FFLOOR_ALPHA_SPECIAL_ADDITIVE)
blendmode = PF_Additive;
else if (rover->alpha == FFLOOR_ALPHA_SPECIAL_SUBTRACTIVE)
blendmode = PF_Substractive;
light = R_GetPlaneLight(gl_frontsector, centerHeight, dup_viewz < cullHeight ? true : false);
HWR_AddTransparentFloor(&levelflats[*rover->bottompic],
@ -3107,7 +3129,7 @@ static void HWR_Subsector(size_t num)
false,
*rover->bottomheight,
*gl_frontsector->lightlist[light].lightlevel,
rover->alpha-1 > 255 ? 255 : rover->alpha-1, rover->master->frontsector, (rover->flags & FF_RIPPLE ? PF_Ripple : 0)|PF_Translucent,
rover->alpha-1 > 255 ? 255 : rover->alpha-1, rover->master->frontsector, (rover->flags & FF_RIPPLE ? PF_Ripple : 0)|blendmode,
false, *gl_frontsector->lightlist[light].extra_colormap);
}
else
@ -3143,8 +3165,16 @@ static void HWR_Subsector(size_t num)
alpha, rover->master->frontsector, PF_Fog|PF_NoTexture,
true, rover->master->frontsector->extra_colormap);
}
else if (rover->flags & FF_TRANSLUCENT && rover->alpha < 256)
else if (rover->flags & FF_TRANSLUCENT
&& (rover->alpha < 256
|| rover->alpha == FFLOOR_ALPHA_SPECIAL_ADDITIVE || rover->alpha == FFLOOR_ALPHA_SPECIAL_SUBTRACTIVE)) // SoM: Flags are more efficient
{
FBITFIELD blendmode = PF_Translucent;
if (rover->alpha == FFLOOR_ALPHA_SPECIAL_ADDITIVE)
blendmode = PF_Additive;
else if (rover->alpha == FFLOOR_ALPHA_SPECIAL_SUBTRACTIVE)
blendmode = PF_Substractive;
light = R_GetPlaneLight(gl_frontsector, centerHeight, dup_viewz < cullHeight ? true : false);
HWR_AddTransparentFloor(&levelflats[*rover->toppic],
@ -3152,7 +3182,7 @@ static void HWR_Subsector(size_t num)
true,
*rover->topheight,
*gl_frontsector->lightlist[light].lightlevel,
rover->alpha-1 > 255 ? 255 : rover->alpha-1, rover->master->frontsector, (rover->flags & FF_RIPPLE ? PF_Ripple : 0)|PF_Translucent,
rover->alpha-1 > 255 ? 255 : rover->alpha-1, rover->master->frontsector, (rover->flags & FF_RIPPLE ? PF_Ripple : 0)|blendmode,
false, *gl_frontsector->lightlist[light].extra_colormap);
}
else

2
src/p_polyobj.c
View file

@ -2563,7 +2563,7 @@ void T_PolyObjFade(polyfade_t *th)
{
if (po->translucency >= NUMTRANSMAPS)
// HACK: OpenGL renders fully opaque when >= NUMTRANSMAPS
po->translucency = NUMTRANSMAPS-1;
po->translucency = tr_trans90;
po->flags |= (po->spawnflags & POF_RENDERALL);

3
src/r_defs.h
View file

@ -152,6 +152,9 @@ typedef enum
FF_GOOWATER = FF_SHATTERBOTTOM, ///< Used with ::FF_SWIMMABLE. Makes thick bouncey goop.
} ffloortype_e;
#define FFLOOR_ALPHA_SPECIAL_ADDITIVE (901)
#define FFLOOR_ALPHA_SPECIAL_SUBTRACTIVE (902)
typedef struct ffloor_s
{
fixed_t *topheight;

6
src/r_plane.c
View file

@ -952,7 +952,7 @@ void R_DrawSinglePlane(visplane_t *pl)
if (pl->polyobj)
{
// Hacked up support for alpha value in software mode Tails 09-24-2002 (sidenote: ported to polys 10-15-2014, there was no time travel involved -Red)
if (pl->polyobj->translucency >= 10)
if (pl->polyobj->translucency >= NUMTRANSMAPS)
return; // Don't even draw it
else if (pl->polyobj->translucency > 0)
{
@ -1013,6 +1013,10 @@ void R_DrawSinglePlane(visplane_t *pl)
ds_transmap = transtables + ((tr_trans20-1)<<FF_TRANSSHIFT);
else if (pl->ffloor->alpha < 243)
ds_transmap = transtables + ((tr_trans10-1)<<FF_TRANSSHIFT);
else if (pl->ffloor->alpha == FFLOOR_ALPHA_SPECIAL_ADDITIVE)
dc_transmap = transtables + ((tr_transadd-1)<<FF_TRANSSHIFT);
else if (pl->ffloor->alpha == FFLOOR_ALPHA_SPECIAL_SUBTRACTIVE)
dc_transmap = transtables + ((tr_transsub-1)<<FF_TRANSSHIFT);
else // Opaque, but allow transparent flat pixels
spanfunctype = SPANDRAWFUNC_SPLAT;

4
src/r_segs.c
View file

@ -775,6 +775,10 @@ void R_RenderThickSideRange(drawseg_t *ds, INT32 x1, INT32 x2, ffloor_t *pfloor)
dc_transmap = transtables + ((tr_trans20-1)<<FF_TRANSSHIFT);
else if (pfloor->alpha < 243)
dc_transmap = transtables + ((tr_trans10-1)<<FF_TRANSSHIFT);
else if (pfloor->alpha == FFLOOR_ALPHA_SPECIAL_ADDITIVE)
dc_transmap = transtables + ((tr_transadd-1)<<FF_TRANSSHIFT);
else if (pfloor->alpha == FFLOOR_ALPHA_SPECIAL_SUBTRACTIVE)
dc_transmap = transtables + ((tr_transsub-1)<<FF_TRANSSHIFT);
else
fuzzy = false; // Opaque