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Fake contrast

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This commit is contained in:
Sally Cochenour 2019-12-25 20:09:31 -05:00
parent 439474882a
commit 3eb6570123
2 changed files with 56 additions and 12 deletions
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67
src/hardware/hw_main.c
View file

@ -674,6 +674,46 @@ static float HWR_ClipViewSegment(INT32 x, polyvertex_t *v1, polyvertex_t *v2)
}
#endif
static FUINT HWR_CalcWallLight(FUINT lightnum, fixed_t v1x, fixed_t v1y, fixed_t v2x, fixed_t v2y)
{
INT16 finallight = lightnum;
if (cv_grfakecontrast.value != 0)
{
const UINT8 contrast = 8;
fixed_t extralight = 0;
if (cv_grfakecontrast.value == 2) // Smooth setting
{
extralight = -(contrast<<FRACBITS) +
FixedDiv(AngleFixed(R_PointToAngle2(0, 0,
abs(v1x - v2x),
abs(v1y - v2y))), 90<<FRACBITS)
* (contrast * 2);
extralight = FixedFloor(extralight + (FRACUNIT>>1)) >> FRACBITS;
}
else
{
if (v1y == v2y)
extralight = -contrast;
else if (v1x == v2x)
extralight = contrast;
}
if (extralight != 0)
{
finallight += extralight;
if (finallight < 0)
finallight = 0;
if (finallight > 255)
finallight = 255;
}
}
return (FUINT)finallight;
}
//
// HWR_SplitWall
//
@ -692,19 +732,20 @@ static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum,
float endpegt, endpegb, endpegmul;
float endheight = 0.0f, endbheight = 0.0f;
fixed_t v1x = FLOAT_TO_FIXED(wallVerts[0].x);
fixed_t v1y = FLOAT_TO_FIXED(wallVerts[0].z); // not a typo
fixed_t v2x = FLOAT_TO_FIXED(wallVerts[1].x);
fixed_t v2y = FLOAT_TO_FIXED(wallVerts[1].z); // not a typo
// compiler complains when P_GetZAt is used in FLOAT_TO_FIXED directly
// use this as a temp var to store P_GetZAt's return value each time
fixed_t temp;
#endif
INT32 solid, i;
fixed_t v1x = FLOAT_TO_FIXED(wallVerts[0].x);
fixed_t v1y = FLOAT_TO_FIXED(wallVerts[0].z); // not a typo
fixed_t v2x = FLOAT_TO_FIXED(wallVerts[1].x);
fixed_t v2y = FLOAT_TO_FIXED(wallVerts[1].z); // not a typo
INT32 solid, i;
lightlist_t * list = sector->lightlist;
const UINT8 alpha = Surf->PolyColor.s.alpha;
FUINT lightnum = sector->lightlevel;
FUINT lightnum = HWR_CalcWallLight(sector->lightlevel, v1x, v1y, v2x, v2y);
extracolormap_t *colormap = NULL;
realtop = top = wallVerts[3].y;
@ -733,12 +774,12 @@ static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum,
{
if (pfloor && (pfloor->flags & FF_FOG))
{
lightnum = pfloor->master->frontsector->lightlevel;
lightnum = HWR_CalcWallLight(pfloor->master->frontsector->lightlevel, v1x, v1y, v2x, v2y);
colormap = pfloor->master->frontsector->extra_colormap;
}
else
{
lightnum = *list[i].lightlevel;
lightnum = HWR_CalcWallLight(*list[i].lightlevel, v1x, v1y, v2x, v2y);
colormap = *list[i].extra_colormap;
}
}
@ -1021,7 +1062,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
cliphigh = (float)(texturehpeg + (gr_curline->flength*FRACUNIT));
}
lightnum = gr_frontsector->lightlevel;
lightnum = HWR_CalcWallLight(gr_frontsector->lightlevel, vs.x, vs.y, ve.x, ve.y);
colormap = gr_frontsector->extra_colormap;
if (gr_frontsector)
@ -1784,7 +1825,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
blendmode = PF_Fog|PF_NoTexture;
lightnum = rover->master->frontsector->lightlevel;
lightnum = HWR_CalcWallLight(rover->master->frontsector->lightlevel, vs.x, vs.y, ve.x, ve.y);
colormap = rover->master->frontsector->extra_colormap;
Surf.PolyColor.s.alpha = HWR_FogBlockAlpha(rover->master->frontsector->lightlevel, rover->master->frontsector->extra_colormap);
@ -1896,7 +1937,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
blendmode = PF_Fog|PF_NoTexture;
lightnum = rover->master->frontsector->lightlevel;
lightnum = HWR_CalcWallLight(rover->master->frontsector->lightlevel, vs.x, vs.y, ve.x, ve.y);
colormap = rover->master->frontsector->extra_colormap;
Surf.PolyColor.s.alpha = HWR_FogBlockAlpha(rover->master->frontsector->lightlevel, rover->master->frontsector->extra_colormap);
@ -6125,6 +6166,7 @@ static void HWR_FoggingOn(void)
static CV_PossibleValue_t grsoftwarefog_cons_t[] = {{0, "Off"}, {1, "On"}, {2, "LightPlanes"}, {0, NULL}};
static CV_PossibleValue_t grmodelinterpolation_cons_t[] = {{0, "Off"}, {1, "Sometimes"}, {2, "Always"}, {0, NULL}};
static CV_PossibleValue_t grfakecontrast_cons_t[] = {{0, "Off"}, {1, "On"}, {2, "Smooth"}, {0, NULL}};
static void CV_grmodellighting_OnChange(void);
static void CV_grfiltermode_OnChange(void);
@ -6161,6 +6203,7 @@ consvar_t cv_grmodellighting = {"gr_modellighting", "Off", CV_SAVE|CV_CALL, CV_O
consvar_t cv_grshearing = {"gr_shearing", "Off", CV_SAVE, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
consvar_t cv_grspritebillboarding = {"gr_spritebillboarding", "Off", CV_SAVE, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
consvar_t cv_grskydome = {"gr_skydome", "On", CV_SAVE, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
consvar_t cv_grfakecontrast = {"gr_fakecontrast", "Smooth", CV_SAVE, grfakecontrast_cons_t, NULL, 0, NULL, NULL, 0, 0, NULL};
consvar_t cv_grrounddown = {"gr_rounddown", "Off", 0, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
consvar_t cv_grfov = {"gr_fov", "90", CV_FLOAT|CV_CALL, grfov_cons_t, CV_grfov_OnChange, 0, NULL, NULL, 0, 0, NULL};
@ -6229,7 +6272,7 @@ void HWR_AddCommands(void)
CV_RegisterVar(&cv_grskydome);
CV_RegisterVar(&cv_grspritebillboarding);
CV_RegisterVar(&cv_grfakecontrast);
CV_RegisterVar(&cv_grshearing);
CV_RegisterVar(&cv_grshaders);

1
src/hardware/hw_main.h
View file

@ -102,6 +102,7 @@ extern consvar_t cv_grsolvetjoin;
extern consvar_t cv_grshearing;
extern consvar_t cv_grspritebillboarding;
extern consvar_t cv_grskydome;
extern consvar_t cv_grfakecontrast;
extern float gr_viewwidth, gr_viewheight, gr_baseviewwindowy;