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Slope contrast

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Sally Cochenour 2020-01-16 16:45:49 -05:00
parent ef81bf810b
commit 56f96674b0
2 changed files with 90 additions and 39 deletions
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128
src/hardware/hw_main.c
View file

@ -242,6 +242,89 @@ UINT8 HWR_FogBlockAlpha(INT32 light, extracolormap_t *colormap) // Let's see if
return surfcolor.s.alpha;
}
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)) >> 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;
}
static FUINT HWR_CalcSlopeLight(FUINT lightnum, angle_t dir, fixed_t delta)
{
INT16 finallight = lightnum;
if (cv_grfakecontrast.value != 0 && cv_grslopecontrast.value != 0)
{
const UINT8 contrast = 8;
fixed_t extralight = 0;
if (cv_grfakecontrast.value == 2) // Smooth setting
{
fixed_t dirmul = abs(FixedDiv(AngleFixed(dir) - (180<<FRACBITS), 180<<FRACBITS));
extralight = -(contrast<<FRACBITS) + (dirmul * (contrast * 2));
extralight = FixedMul(extralight, delta*4) >> FRACBITS;
}
else
{
dir = ((dir + ANGLE_45) / ANGLE_90) * ANGLE_90;
if (dir == ANGLE_180)
extralight = -contrast;
else if (dir == 0)
extralight = contrast;
if (delta >= FRACUNIT/2)
extralight *= 2;
}
if (extralight != 0)
{
finallight += extralight;
if (finallight < 0)
finallight = 0;
if (finallight > 255)
finallight = 255;
}
}
return (FUINT)finallight;
}
// ==========================================================================
// FLOOR/CEILING GENERATION FROM SUBSECTORS
// ==========================================================================
@ -459,6 +542,11 @@ static void HWR_RenderPlane(extrasubsector_t *xsub, boolean isceiling, fixed_t f
#endif
}
#ifdef ESLOPE
if (slope)
lightlevel = HWR_CalcSlopeLight(lightlevel, R_PointToAngle2(0, 0, slope->normal.x, slope->normal.y), abs(slope->zdelta));
#endif
HWR_Lighting(&Surf, lightlevel, planecolormap);
if (PolyFlags & (PF_Translucent|PF_Fog))
@ -682,45 +770,6 @@ 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)) >> 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
//
@ -6105,6 +6154,7 @@ consvar_t cv_grshearing = {"gr_shearing", "Off", CV_SAVE, CV_OnOff, NULL, 0, NUL
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_grslopecontrast = {"gr_slopecontrast", "Off", CV_SAVE, CV_OnOff, 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_grfogdensity = {"gr_fogdensity", "150", CV_CALL|CV_NOINIT, CV_Unsigned,

1
src/hardware/hw_main.h
View file

@ -104,6 +104,7 @@ extern consvar_t cv_grshearing;
extern consvar_t cv_grspritebillboarding;
extern consvar_t cv_grskydome;
extern consvar_t cv_grfakecontrast;
extern consvar_t cv_grslopecontrast;
extern float gr_viewwidth, gr_viewheight, gr_baseviewwindowy;