slang-shaders/crt/shaders/guest/crt-guest-dr-venom.slang

#version 450

/*
   CRT - Guest - Dr. Venom
   
   Copyright (C) 2018-2020 guest(r) - guest.r@gmail.com

   Incorporates many good ideas and suggestions from Dr. Venom.
   
   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; either version 2
   of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
   
*/

layout(push_constant) uniform Push
{
	float TATE, IOS, OS, BLOOM, brightboost, brightboost1, gsl, scanline1, scanline2, beam_min, beam_max, beam_size,
      h_sharp, s_sharp, csize, bsize, warpX, warpY, glow, shadowMask, masksize, vertmask,
      slotmask, slotwidth, double_slot, mcut, maskDark, maskLight, CGWG, gamma_out, spike, inter;
} params;

layout(std140, set = 0, binding = 0) uniform UBO
{
	mat4 MVP;
   vec4 SourceSize;
	vec4 OriginalSize;
	vec4 OutputSize;
	uint FrameCount;
	float bloom;
	float interm;	
} global;

#pragma parameter TATE "TATE Mode" 0.0 0.0 1.0 1.0
#define TATE         params.TATE     // Screen orientation
#pragma parameter IOS "Smart Integer Scaling: 1.0:Y, 2.0:'X'+Y" 0.0 0.0 2.0 1.0
#define IOS          params.IOS     // Smart Integer Scaling
#pragma parameter OS "R. Bloom Overscan Mode" 1.0 0.0 2.0 1.0
#define OS           params.OS     // Do overscan
#pragma parameter BLOOM "Raster bloom %" 0.0 0.0 20.0 1.0
#define BLOOM        params.BLOOM     // Bloom overscan percentage
#pragma parameter brightboost "Bright Boost Dark Pixels" 1.40 0.50 4.00 0.05
#define brightboost  params.brightboost     // adjust brightness
#pragma parameter brightboost1 "Bright Boost Bright Pixels" 1.15 0.50 2.00 0.05
#define brightboost1  params.brightboost1     // adjust brightness
#pragma parameter gsl "Scanline Type" 0.0 0.0 2.0 1.0
#define gsl          params.gsl      // Alternate scanlines
#pragma parameter scanline1 "Scanline beam shape low" 6.0 1.0 15.0 1.0
#define scanline1    params.scanline1      // scanline param, vertical sharpness
#pragma parameter scanline2 "Scanline beam shape high" 8.0 5.0 23.0 1.0 
#define scanline2    params.scanline2      // scanline param, vertical sharpness
#pragma parameter beam_min "Scanline dark" 1.35 0.5 2.0 0.05
#define beam_min     params.beam_min     // dark area beam min - narrow
#pragma parameter beam_max "Scanline bright" 1.05 0.5 2.0 0.05
#define beam_max     params.beam_max     // bright area beam max - wide
#pragma parameter beam_size "Increased bright scanline beam" 0.70 0.0 1.0 0.05
#define beam_size    params.beam_size     // increased max. beam size
#pragma parameter h_sharp "Horizontal sharpness" 5.25 1.5 20.0 0.25
#define h_sharp      params.h_sharp     // pixel sharpness
#pragma parameter s_sharp "Substractive sharpness (relative)" 0.35 0.0 1.0 0.05
#define s_sharp      params.s_sharp     // substractive sharpness
#pragma parameter csize "Corner size" 0.0 0.0 0.07 0.01
#define csize        params.csize     // corner size
#pragma parameter bsize "Border smoothness" 600.0 100.0 600.0 25.0
#define bsize        params.bsize     // border smoothness
#pragma parameter warpX "CurvatureX (default 0.03)" 0.0 0.0 0.125 0.01
#define warpX        params.warpX     // Curvature X
#pragma parameter warpY "CurvatureY (default 0.04)" 0.0 0.0 0.125 0.01
#define warpY        params.warpY     // Curvature Y
#pragma parameter glow "Glow Strength" 0.02 0.0 0.5 0.01
#define glow         params.glow     // Glow Strength
#pragma parameter shadowMask "CRT Mask: 0:CGWG, 1-4:Lottes, 5-6:'Trinitron'" 0.0 -1.0 7.0 1.0
#define shadowMask   params.shadowMask     // Mask Style
#pragma parameter masksize "CRT Mask Size (2.0 is nice in 4k)" 1.0 1.0 2.0 1.0
#define masksize     params.masksize     // Mask Size
#pragma parameter vertmask "PVM Like Colors" 0.0 0.0 0.25 0.01
#define vertmask     params.vertmask     // Vertical mask
#pragma parameter slotmask "Slot Mask Strength" 0.0 0.0 1.0 0.05
#define slotmask     params.slotmask     // Slot Mask ON/OFF
#pragma parameter slotwidth "Slot Mask Width" 2.0 2.0 6.0 0.5
#define slotwidth    params.slotwidth     // Slot Mask Width
#pragma parameter double_slot "Slot Mask Height: 2x1 or 4x1" 1.0 1.0 2.0 1.0
#define double_slot  params.double_slot     // Slot Mask Height
#pragma parameter mcut "Mask 5&6 cutoff" 0.2 0.0 0.5 0.05
#define mcut         params.mcut     // Mask 5&6 cutoff
#pragma parameter maskDark "Lottes&Trinitron maskDark" 0.5 0.0 2.0 0.05
#define maskDark     params.maskDark     // Dark "Phosphor"
#pragma parameter maskLight "Lottes&Trinitron maskLight" 1.5 0.0 2.0 0.05
#define maskLight    params.maskLight     // Light "Phosphor"
#pragma parameter CGWG "CGWG Mask Str." 0.3 0.0 1.0 0.05
#define CGWG         params.CGWG     // CGWG Mask Strength
#pragma parameter gamma_out "Gamma out" 2.4 1.0 3.5 0.05
#define gamma_out    params.gamma_out     // output gamma
#pragma parameter spike "Scanline Spike Removal (0.0 - for speedup)" 1.0 0.0 2.0 0.25
#define spike params.spike
#pragma parameter inter "Interlace Trigger Resolution :" 300.0 0.0 800.0 25.0
#define inter         params.inter     // interlace resolution
#pragma parameter interm "Interlace Mode (0.0 = OFF):" 1.0 0.0 3.0 1.0
#define interm         global.interm     // interlace mode 
#pragma parameter bloom "Bloom Strength" 0.0 0.0 2.0 0.1
#define bloom         global.bloom     // bloom effect

#define COMPAT_TEXTURE(c,d) texture(c,d)
#define TEX0 vTexCoord
#define InputSize SourceSize
#define TextureSize SourceSize

#define SourceSize global.SourceSize
#define OutputSize global.OutputSize
#define gl_FragCoord (vTexCoord * OutputSize.xy)

#pragma stage vertex
layout(location = 0) in vec4 Position;
layout(location = 1) in vec2 TexCoord;
layout(location = 0) out vec2 vTexCoord;

void main()
{
   gl_Position = global.MVP * Position;
   vTexCoord = TexCoord * 1.00001;
}

#pragma stage fragment
layout(location = 0) in vec2 vTexCoord;
layout(location = 0) out vec4 FragColor;
layout(set = 0, binding = 2) uniform sampler2D Source;
layout(set = 0, binding = 3) uniform sampler2D LinearizePass;
layout(set = 0, binding = 4) uniform sampler2D AvgLumPass;
layout(set = 0, binding = 5) uniform sampler2D GlowPass;

#define Texture Source
#define PassPrev5Texture AvgLumPass
#define PassPrev4Texture LinearizePass
#define PassPrev2Texture GlowPass

#define eps 1e-10 

float st(float x)
{
	return exp2(-10.0*x*x);
} 
   
vec3 sw0(vec3 x, vec3 color, float scanline)
{
	vec3 tmp = mix(vec3(beam_min),vec3(beam_max), color);
	vec3 ex = x*tmp;
	return exp2(-scanline*ex*ex);
} 

vec3 sw1(vec3 x, vec3 color, float scanline)
{	
	float mx = max(max(color.r, color.g),color.b);
	x = mix (x, beam_min*x, max(x-0.4*mx,0.0));
	vec3 tmp = mix(vec3(1.2*beam_min),vec3(beam_max), color);
	vec3 ex = x*tmp;
	float br = clamp(0.8*beam_min - 1.0, 0.2, 0.45);
	vec3 res = exp2(-scanline*ex*ex)/(1.0-br+br*mx);
	mx = max(max(res.r,res.g),res.b);
	return mix(vec3(mx), res, 0.70);		
}    

vec3 sw2(vec3 x, vec3 color, float scanline)
{
	float mx = max(max(color.r, color.g),color.b);
	vec3 tmp = mix(vec3(2.5*beam_min),vec3(beam_max), color);
	tmp = mix(vec3(beam_max), tmp, pow(abs(x), color+0.3));
	vec3 ex = x*tmp;
	vec3 res = exp2(-scanline*ex*ex)/(0.6 + 0.4*mx);
	mx = max(max(res.r,res.g),res.b);
	return mix(vec3(mx), res, 0.60);	
} 

// Shadow mask (1-4 from PD CRT Lottes shader).
vec3 Mask(vec2 pos, vec3 c)
{
	pos = floor(pos/masksize);
	vec3 mask = vec3(maskDark, maskDark, maskDark);
	
	// No mask
	if (shadowMask == -1.0)
	{
		mask = vec3(1.0);
	}       
	
	// Phosphor.
	else if (shadowMask == 0.0)
	{
		pos.x = fract(pos.x*0.5);
		float mc = 1.0 - CGWG;
		if (pos.x < 0.5) { mask.r = 1.1; mask.g = mc; mask.b = 1.1; }
		else { mask.r = mc; mask.g = 1.1; mask.b = mc; }
	}    
   
	// Very compressed TV style shadow mask.
	else if (shadowMask == 1.0)
	{
		float line = maskLight;
		float odd  = 0.0;

		if (fract(pos.x/6.0) < 0.5)
			odd = 1.0;
		if (fract((pos.y + odd)/2.0) < 0.5)
			line = maskDark;

		pos.x = fract(pos.x/3.0);
    
		if      (pos.x < 0.333) mask.r = maskLight;
		else if (pos.x < 0.666) mask.g = maskLight;
		else                    mask.b = maskLight;
		
		mask*=line;  
	} 

	// Aperture-grille.
	else if (shadowMask == 2.0)
	{
		pos.x = fract(pos.x/3.0);

		if      (pos.x < 0.333) mask.r = maskLight;
		else if (pos.x < 0.666) mask.g = maskLight;
		else                    mask.b = maskLight;
	} 

	// Stretched VGA style shadow mask (same as prior shaders).
	else if (shadowMask == 3.0)
	{
		pos.x += pos.y*3.0;
		pos.x  = fract(pos.x/6.0);

		if      (pos.x < 0.333) mask.r = maskLight;
		else if (pos.x < 0.666) mask.g = maskLight;
		else                    mask.b = maskLight;
	}

	// VGA style shadow mask.
	else if (shadowMask == 4.0)
	{
		pos.xy = floor(pos.xy*vec2(1.0, 0.5));
		pos.x += pos.y*3.0;
		pos.x  = fract(pos.x/6.0);

		if      (pos.x < 0.333) mask.r = maskLight;
		else if (pos.x < 0.666) mask.g = maskLight;
		else                    mask.b = maskLight;
	}
	
	// Alternate mask 5
	else if (shadowMask == 5.0)
	{
		float mx = max(max(c.r,c.g),c.b);
		vec3 maskTmp = vec3( min( 1.25*max(mx-mcut,0.0)/(1.0-mcut) ,maskDark + 0.2*(1.0-maskDark)*mx));
		float adj = 0.80*maskLight - 0.5*(0.80*maskLight - 1.0)*mx + 0.75*(1.0-mx);	
		mask = maskTmp;
		pos.x = fract(pos.x/2.0);
		if  (pos.x < 0.5)
		{	mask.r  = adj;
			mask.b  = adj;
		}
		else     mask.g = adj;
	}    

	// Alternate mask 6
	else if (shadowMask == 6.0)
	{
		float mx = max(max(c.r,c.g),c.b);
		vec3 maskTmp = vec3( min( 1.33*max(mx-mcut,0.0)/(1.0-mcut) ,maskDark + 0.225*(1.0-maskDark)*mx));
		float adj = 0.80*maskLight - 0.5*(0.80*maskLight - 1.0)*mx + 0.75*(1.0-mx);
		mask = maskTmp;
		pos.x = fract(pos.x/3.0);
		if      (pos.x < 0.333) mask.r = adj;
		else if (pos.x < 0.666) mask.g = adj;
		else                    mask.b = adj; 
	}
	
	// Alternate mask 7
	else if (shadowMask == 7.0)
	{
		float mx = max(max(c.r,c.g),c.b);
		float maskTmp = min(1.6*max(mx-mcut,0.0)/(1.0-mcut) ,1.0 + 0.6*(1.0-mx));
		mask = vec3(maskTmp);
		pos.x = fract(pos.x/2.0);
		if  (pos.x < 0.5) mask = vec3(1.0 + 0.6*(1.0-mx));
	}    
	
	return mask;
} 

float SlotMask(vec2 pos, vec3 c)
{
	if (slotmask == 0.0) return 1.0;
	
	float mx = pow(max(max(c.r,c.g),c.b),1.33);
	float mlen = slotwidth*2.0;
	float px = fract(pos.x/mlen);
	float py = floor(fract(pos.y/(2.0*double_slot))*2.0*double_slot);
	float slot_dark = mix(1.0-slotmask, 1.0-0.80*slotmask, mx);
	float slot = 1.0 + 0.7*slotmask*(1.0-mx);
	if (py == 0.0 && px <  0.5) slot = slot_dark; else
	if (py == double_slot && px >= 0.5) slot = slot_dark;		
	
	return slot;
}   
 
// Distortion of scanlines, and end of screen alpha (PD Lottes Curvature)
vec2 Warp(vec2 pos)
{
	pos  = pos*2.0-1.0;    
	pos *= vec2(1.0 + (pos.y*pos.y)*warpX, 1.0 + (pos.x*pos.x)*warpY);
	return pos*0.5 + 0.5;
} 

vec2 Overscan(vec2 pos, float dx, float dy){
	pos=pos*2.0-1.0;    
	pos*=vec2(dx,dy);
	return pos*0.5+0.5;
} 


// Borrowed from cgwg's crt-geom, under GPL

float corner(vec2 coord)
{
	coord *= SourceSize.xy / InputSize.xy;
	coord = (coord - vec2(0.5)) * 1.0 + vec2(0.5);
	coord = min(coord, vec2(1.0)-coord) * vec2(1.0, OutputSize.y/OutputSize.x);
	vec2 cdist = vec2(max(csize, max((1.0-smoothstep(100.0,600.0,bsize))*0.01,0.002)));
	coord = (cdist - min(coord,cdist));
	float dist = sqrt(dot(coord,coord));
	return clamp((cdist.x-dist)*bsize,0.0, 1.0);
}

vec3 declip(vec3 c, float b)
{
	float m = max(max(c.r,c.g),c.b);
	if (m > b) c = c*b/m;
	return c;
}

void main()
{
	float lum = COMPAT_TEXTURE(PassPrev5Texture, vec2(0.1,0.1)).a;

	// Calculating texel coordinates
   
	vec2 texcoord = TEX0.xy;
	if (IOS > 0.0){
		vec2 ofactor = OutputSize.xy/InputSize.xy;
		vec2 intfactor = round(ofactor);
		vec2 diff = ofactor/intfactor;
		float scan = mix(diff.y, diff.x, TATE);
		texcoord = Overscan(texcoord*(SourceSize.xy/InputSize.xy), scan, scan)*(InputSize.xy/SourceSize.xy);
		if (IOS == 1.0) texcoord = mix(vec2(TEX0.x, texcoord.y), vec2(texcoord.x, TEX0.y), TATE);
	}
   
	float factor  = 1.00 + (1.0-0.5*OS)*BLOOM/100.0 - lum*BLOOM/100.0;
	texcoord  = Overscan(texcoord*(SourceSize.xy/InputSize.xy), factor, factor)*(InputSize.xy/SourceSize.xy);
	vec2 pos  = Warp(texcoord*(TextureSize.xy/InputSize.xy))*(InputSize.xy/TextureSize.xy);
	vec2 pos0 = Warp(TEX0.xy*(TextureSize.xy/InputSize.xy))*(InputSize.xy/TextureSize.xy);
   
	vec2 coffset = ((TATE < 0.5) ? vec2(0.0,0.5) : vec2(0.5, 0.0));
	if ((interm == 1.0 || interm == 2.0) && inter <= mix(SourceSize.y, SourceSize.x, TATE)) coffset = vec2(0.0);	
	
	vec2 ps = SourceSize.zw;
	vec2 OGL2Pos = pos * SourceSize.xy - coffset;
	vec2 fp = fract(OGL2Pos);
	
	vec2 dx = vec2(ps.x,0.0);
	vec2 dy = vec2(0.0, ps.y);
   
	// Reading the texels
	vec2 x2 = 2.0*dx;
	vec2 y2 = 2.0*dy;

	vec2 offx = dx;
	vec2 off2 = x2;
	vec2 offy = dy;
	float fpx = fp.x;
	if(TATE > 0.5)
	{
		offx = dy;
		off2 = y2;
		offy = dx;
		fpx = fp.y;
	}
	float  f = (TATE < 0.5) ? fp.y : fp.x;
	
	vec2 pC4 = floor(OGL2Pos) * ps + 0.5*ps;
	
	float zero = exp2(-h_sharp);   
	float sharp1 = s_sharp * zero;
	
	float wl2 = 1.5 + fpx;
	float wl1 = 0.5 + fpx;
	float wct = 0.5 - fpx;
	float wr1 = 1.5 - fpx;
	float wr2 = 2.5 - fpx;
	
	wl2*=wl2; wl2 = exp2(-h_sharp*wl2);
	wl1*=wl1; wl1 = exp2(-h_sharp*wl1);
	wct*=wct; wct = exp2(-h_sharp*wct);
	wr1*=wr1; wr1 = exp2(-h_sharp*wr1);
	wr2*=wr2; wr2 = exp2(-h_sharp*wr2);
	
	float fp1 = 1.-fpx;
	
	float twl2 = max(wl2 - sharp1, min(mix( -0.09, 0.09, fpx),0.0));
	float twl1 = max(wl1 - sharp1, mix( -0.275, -0.09, fpx));
	float twct = max(wct - sharp1,  0.0);
	float twr1 = max(wr1 - sharp1, mix( -0.275, -0.09, fp1));
	float twr2 = max(wr2 - sharp1, min(mix( -0.09, 0.09, fp1),0.0));
	
	float wtt = 1.0/(twl2+twl1+twct+twr1+twr2);
	float wt  = 1.0/(wl2+wl1+wct+wr1+wr2);
	bool sharp = (s_sharp > 0.02);
	
	vec3 l2 = COMPAT_TEXTURE(PassPrev4Texture, pC4 -off2).xyz;
	vec3 l1 = COMPAT_TEXTURE(PassPrev4Texture, pC4 -offx).xyz;
	vec3 ct = COMPAT_TEXTURE(PassPrev4Texture, pC4      ).xyz;
	vec3 r1 = COMPAT_TEXTURE(PassPrev4Texture, pC4 +offx).xyz;
	vec3 r2 = COMPAT_TEXTURE(PassPrev4Texture, pC4 +off2).xyz;
	
	vec3 sl2 = COMPAT_TEXTURE(Texture, pC4 -off2).xyz;
	vec3 sl1 = COMPAT_TEXTURE(Texture, pC4 -offx).xyz;
	vec3 sct = COMPAT_TEXTURE(Texture, pC4      ).xyz;
	vec3 sr1 = COMPAT_TEXTURE(Texture, pC4 +offx).xyz;
	vec3 sr2 = COMPAT_TEXTURE(Texture, pC4 +off2).xyz;
	
	vec3 color1 = clamp((l2*twl2 + l1*twl1 + ct*twct + r1*twr1 + r2*twr2)*wtt,0.0,1.0);
	
	vec3 e2 = l2; if (fpx > 0.5) e2 = r2;
	vec3 colmin = min(min(l1,r1), min(ct,e2));
	vec3 colmax = max(max(l1,r1), max(ct,e2));
	
	if (sharp) color1 = clamp(color1, colmin, colmax);
	
	vec3 gtmp = vec3(gamma_out*0.1); 
	vec3 scolor1 = color1;
	
	if (spike > 0.0)
	{
		scolor1 = (sl2*wl2 + sl1*wl1 + sct*wct + sr1*wr1 + sr2*wr2)*wt;
		scolor1 = pow(scolor1, gtmp);	
		scolor1 = mix(color1, scolor1, spike);
	} 
	
	pC4+=offy;
	
	l2 = COMPAT_TEXTURE(PassPrev4Texture, pC4 -off2).xyz;
	l1 = COMPAT_TEXTURE(PassPrev4Texture, pC4 -offx).xyz;
	ct = COMPAT_TEXTURE(PassPrev4Texture, pC4      ).xyz; 
	r1 = COMPAT_TEXTURE(PassPrev4Texture, pC4 +offx).xyz;
	r2 = COMPAT_TEXTURE(PassPrev4Texture, pC4 +off2).xyz;
	
	sl2 = COMPAT_TEXTURE(Texture, pC4 -off2).xyz;
	sl1 = COMPAT_TEXTURE(Texture, pC4 -offx).xyz;
	sct = COMPAT_TEXTURE(Texture, pC4      ).xyz; 
	sr1 = COMPAT_TEXTURE(Texture, pC4 +offx).xyz;
	sr2 = COMPAT_TEXTURE(Texture, pC4 +off2).xyz;
	
	vec3 color2 = clamp((l2*twl2 + l1*twl1 + ct*twct + r1*twr1 + r2*twr2)*wtt,0.0,1.0);
	
	e2 = l2; if (fpx > 0.5) e2 = r2;
	colmin = min(min(l1,r1), min(ct,e2));
	colmax = max(max(l1,r1), max(ct,e2));
	
	if (sharp) color2 = clamp(color2, colmin, colmax);

	vec3 scolor2 = color2;
	
	if (spike > 0.0)
	{	
		scolor2 = (sl2*wl2 + sl1*wl1 + sct*wct + sr1*wr1 + sr2*wr2)*wt;
		scolor2 = pow(scolor2, gtmp);	
		scolor2 = mix(color2, scolor2, spike);
	} 
	
	vec3 color0 = color1;

	if ((interm == 1.0 || interm == 2.0) && inter <= mix(SourceSize.y, SourceSize.x, TATE))
	{
		pC4-= 2.*offy;
	
		l2 = COMPAT_TEXTURE(PassPrev4Texture, pC4 -off2).xyz;
		l1 = COMPAT_TEXTURE(PassPrev4Texture, pC4 -offx).xyz;
		ct = COMPAT_TEXTURE(PassPrev4Texture, pC4      ).xyz; 
		r1 = COMPAT_TEXTURE(PassPrev4Texture, pC4 +offx).xyz;
		r2 = COMPAT_TEXTURE(PassPrev4Texture, pC4 +off2).xyz;
	
		color0 = clamp((l2*twl2 + l1*twl1 + ct*twct + r1*twr1 + r2*twr2)*wtt,0.0,1.0);
	
		e2 = l2; if (fpx > 0.5) e2 = r2;
		colmin = min(min(l1,r1), min(ct,e2));
		colmax = max(max(l1,r1), max(ct,e2));
	
		if (sharp) color0 = clamp(color0, colmin, colmax);
	}
	
	// calculating scanlines
	
	float shape1 = mix(scanline1, scanline2, f);
	float shape2 = mix(scanline1, scanline2, 1.0-f);	
	
	float wt1 = st(f);
	float wt2 = st(1.0-f);

	vec3 color00 = color1*wt1 + color2*wt2;
	vec3 scolor0 = scolor1*wt1 + scolor2*wt2;
	
	vec3 ctmp = color00/(wt1+wt2);
	vec3 sctmp = scolor0/(wt1+wt2);
	
	vec3 tmp = pow(ctmp, vec3(1.0/gamma_out));
	
	vec3 w1,w2 = vec3(0.0);
	
	vec3 cref1 = mix(sctmp, scolor1, beam_size);
	vec3 cref2 = mix(sctmp, scolor2, beam_size);
	
	vec3 shift = vec3(-vertmask, vertmask, -vertmask);
	
	vec3 f1 = clamp(vec3(f) + shift*0.5*(1.0+f), 0.0, 1.0); 
	vec3 f2 = clamp(vec3(1.0-f) - shift*0.5*(2.0-f), 0.0, 1.0);
	
	if (gsl == 0.0) { w1 = sw0(f1,cref1,shape1); w2 = sw0(f2,cref2,shape2);} else
	if (gsl == 1.0) { w1 = sw1(f1,cref1,shape1); w2 = sw1(f2,cref2,shape2);} else
	if (gsl == 2.0) { w1 = sw2(f1,cref1,shape1); w2 = sw2(f2,cref2,shape2);}
	
	vec3 color = color1*w1 + color2*w2;
	
	if (interm > 0.5 && inter <= mix(SourceSize.y, SourceSize.x, TATE)) 
	{
		float line_no  = floor(mod(mix(  OGL2Pos.y,  OGL2Pos.x, TATE),2.0));		
		float frame_no = floor(mod(float(global.FrameCount),2.0));
		
		if (interm == 1.0)
		{
			vec3 icolor1 = mix(color1, color0, abs(line_no-frame_no));
			vec3 icolor2 = mix(color1, color2, abs(line_no-frame_no));
			color = mix(icolor1, icolor2, f);
		} 
		else if (interm == 2.0)
		{
			float v0 = exp2(-2.25*2.25);			
			float v1 = exp2(-2.25*(0.5+f)*(0.5+f)) - v0;
			float v2 = exp2(-2.25*(0.5-f)*(0.5-f)) - v0;
			float v3 = exp2(-2.25*(1.5-f)*(1.5-f)) - v0;
			color = (v1*color0 + v2*color1 + v3*color2)/(v1+v2+v3);
		}
		else color = mix(color1, color2, f);
	}
	
	ctmp = 0.5*(ctmp+tmp);
	color*=mix(brightboost, brightboost1, max(max(ctmp.r,ctmp.g),ctmp.b));
	color = min(color, 1.0); 
   
	// Apply Mask
	
	vec3 orig1 = color; float pixbr = max(max(ctmp.r,ctmp.g),ctmp.b); vec3 orig = ctmp; w1 = w1+w2; float w3 = max(max(w1.r,w1.g),w1.b); 
	vec3 cmask1 = vec3(1.0); vec3 cmask2 = cmask1; vec3 cmask = cmask1; vec3 one = vec3(1.0);
	
	cmask1*= (TATE < 0.5) ? Mask(gl_FragCoord.xy * 1.000001,tmp) :
		Mask(gl_FragCoord.yx * 1.000001,tmp);
	
	color = color*cmask1;
	
	color = min(color,1.0);
	
	cmask2 *= (TATE < 0.5) ? SlotMask(gl_FragCoord.xy * 1.000001,tmp) :
		SlotMask(gl_FragCoord.yx * 1.000001,tmp);		
	
	color = color*cmask2; cmask = cmask1*cmask2;
	
	vec3 Bloom = COMPAT_TEXTURE(PassPrev2Texture, pos).xyz;
   
	vec3 Bloom1 = 2.0*Bloom*Bloom;
	Bloom1 = min(Bloom1, 0.75);
	float bmax = max(max(Bloom1.r,Bloom1.g),Bloom1.b);
	float pmax = 0.85;
	Bloom1 = min(Bloom1, pmax*bmax)/pmax;
	
	Bloom1 = mix(min( Bloom1, color), Bloom1, 0.5*(orig1+color));
	
	Bloom1 = bloom*Bloom1;
	
	color = color + Bloom1;
	
	color = min(color, 1.0);
	if (interm < 0.5 || inter > mix(SourceSize.y, SourceSize.x, TATE)) color = declip(color, pow(w3,0.5));	
	color = min(color, mix(cmask,one,0.5));

	color = color + glow*Bloom;
		
	color = pow(color, vec3(1.0/gamma_out));
	
	FragColor = vec4(color*corner(pos0), 1.0);
}