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Drop shadows closer to software

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This commit is contained in:
Sally Cochenour 2020-02-01 22:58:11 -05:00
parent 8ee1cc9209
commit 6b6c4ec517
1 changed files with 19 additions and 34 deletions
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53
src/hardware/hw_main.c
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@ -3742,13 +3742,12 @@ static boolean HWR_DoCulling(line_t *cullheight, line_t *viewcullheight, float v
return false; return false;
} }
static void HWR_DrawDropShadow(mobj_t *thing, gr_vissprite_t *spr, fixed_t scale) static void HWR_DrawDropShadow(mobj_t *thing, fixed_t scale)
{ {
GLPatch_t *gpatch; GLPatch_t *gpatch;
FOutVector shadowVerts[4]; FOutVector shadowVerts[4];
FSurfaceInfo sSurf; FSurfaceInfo sSurf;
float fscale; float fx; float fy; float offset; float fscale; float fx; float fy; float offset;
UINT8 lightlevel = 255;
extracolormap_t *colormap = NULL; extracolormap_t *colormap = NULL;
UINT8 i; UINT8 i;
@ -3791,10 +3790,18 @@ static void HWR_DrawDropShadow(mobj_t *thing, gr_vissprite_t *spr, fixed_t scale
else else
offset = (float)(gpatch->height/2); offset = (float)(gpatch->height/2);
shadowVerts[0].x = shadowVerts[3].x = fx - offset; shadowVerts[2].x = shadowVerts[3].x = fx + offset;
shadowVerts[2].x = shadowVerts[1].x = fx + offset; shadowVerts[1].x = shadowVerts[0].x = fx - offset;
shadowVerts[0].z = shadowVerts[1].z = fy - offset; shadowVerts[1].z = shadowVerts[2].z = fy - offset;
shadowVerts[3].z = shadowVerts[2].z = fy + offset; shadowVerts[0].z = shadowVerts[3].z = fy + offset;
for (i = 0; i < 4; i++)
{
float oldx = shadowVerts[i].x;
float oldy = shadowVerts[i].z;
shadowVerts[i].x = fx + ((oldx - fx) * gr_viewcos) - ((oldy - fy) * gr_viewsin);
shadowVerts[i].z = fy + ((oldx - fx) * gr_viewsin) + ((oldy - fy) * gr_viewcos);
}
if (floorslope) if (floorslope)
{ {
@ -3810,47 +3817,25 @@ static void HWR_DrawDropShadow(mobj_t *thing, gr_vissprite_t *spr, fixed_t scale
shadowVerts[i].y = FIXED_TO_FLOAT(floorz) + 0.05f; shadowVerts[i].y = FIXED_TO_FLOAT(floorz) + 0.05f;
} }
if (spr->flip) shadowVerts[0].s = shadowVerts[3].s = 0;
{ shadowVerts[2].s = shadowVerts[1].s = gpatch->max_s;
shadowVerts[0].s = shadowVerts[3].s = gpatch->max_s;
shadowVerts[2].s = shadowVerts[1].s = 0;
}
else
{
shadowVerts[0].s = shadowVerts[3].s = 0;
shadowVerts[2].s = shadowVerts[1].s = gpatch->max_s;
}
// flip the texture coords (look familiar?) shadowVerts[3].t = shadowVerts[2].t = 0;
if (spr->vflip) shadowVerts[0].t = shadowVerts[1].t = gpatch->max_t;
{
shadowVerts[3].t = shadowVerts[2].t = gpatch->max_t;
shadowVerts[0].t = shadowVerts[1].t = 0;
}
else
{
shadowVerts[3].t = shadowVerts[2].t = 0;
shadowVerts[0].t = shadowVerts[1].t = gpatch->max_t;
}
if (thing->subsector->sector->numlights) if (thing->subsector->sector->numlights)
{ {
light = R_GetPlaneLight(thing->subsector->sector, floorz, false); // Always use the light at the top instead of whatever I was doing before light = R_GetPlaneLight(thing->subsector->sector, floorz, false); // Always use the light at the top instead of whatever I was doing before
lightlevel = *thing->subsector->sector->lightlist[light].lightlevel;
if (*thing->subsector->sector->lightlist[light].extra_colormap) if (*thing->subsector->sector->lightlist[light].extra_colormap)
colormap = *thing->subsector->sector->lightlist[light].extra_colormap; colormap = *thing->subsector->sector->lightlist[light].extra_colormap;
} }
else else
{ {
lightlevel = thing->subsector->sector->lightlevel;
if (thing->subsector->sector->extra_colormap) if (thing->subsector->sector->extra_colormap)
colormap = thing->subsector->sector->extra_colormap; colormap = thing->subsector->sector->extra_colormap;
} }
HWR_Lighting(&sSurf, lightlevel, colormap); HWR_Lighting(&sSurf, 0, colormap);
sSurf.PolyColor.s.alpha = alpha; sSurf.PolyColor.s.alpha = alpha;
HWD.pfnSetShader(3); // sprite shader HWD.pfnSetShader(3); // sprite shader
@ -4918,7 +4903,7 @@ static void HWR_DrawSprites(void)
{ {
if (spr->mobj && spr->mobj->shadowscale && cv_shadow.value) if (spr->mobj && spr->mobj->shadowscale && cv_shadow.value)
{ {
HWR_DrawDropShadow(spr->mobj, spr, spr->mobj->shadowscale); HWR_DrawDropShadow(spr->mobj, spr->mobj->shadowscale);
} }
if (spr->mobj && spr->mobj->skin && spr->mobj->sprite == SPR_PLAY) if (spr->mobj && spr->mobj->skin && spr->mobj->sprite == SPR_PLAY)