Ported ReShade 2.x effects

/**
* Dos Game shader by Boris Vorontsov
* enbdev.com/effect_dosgame.zip
*/

#include EFFECT_CONFIG(IDDQD)

#if USE_DOSFX

#pragma message "DOS effect by Boris Vorontsov (ported by IDDQD)\n"

namespace Iddqd
{

float4 PS_DosFX(float4 vpos : SV_Position, float2 texcoord : TEXCOORD) : SV_Target
{
float2 xs = ReShade::ScreenSize / PIXELSIZE;

#if (ENABLE_SCREENSIZE == 1)
xs=DOSScreenSize;
#endif

texcoord.xy=floor(texcoord.xy * xs)/xs;

float4 origcolor=tex2D(ReShade::BackBuffer, texcoord);

origcolor+=0.0001;

#if (DOSCOLOR == 1)
float graymax=max(origcolor.x, max(origcolor.y, origcolor.z));
float3 ncolor=origcolor.xyz/graymax;
graymax=floor(graymax * DOSColorsCount)/DOSColorsCount;
origcolor.xyz*=graymax;
#if (ENABLE_POSTCURVE == 1)
origcolor.xyz = pow(origcolor.xyz, POSTCURVE);
#endif
#endif

return origcolor;
}

float4 PS_DosGamma(float4 vpos : SV_Position, float2 texcoord : TEXCOORD) : SV_Target
{
float4 color=tex2D(ReShade::BackBuffer, texcoord);
color.xyz = lerp(color.xyz,-0.0039*pow(1.0/0.0039, 1.0-color.xyz)+1.0,0.7*(DoSgammaValue/2.2));
return color;
}

technique DosFX_Tech <bool enabled = RESHADE_START_ENABLED; int toggle = Dos_ToggleKey; >
{
#if ENABLE_AGD
pass DosFXGammaPass
{
VertexShader = ReShade::VS_PostProcess;
PixelShader = PS_DosGamma;
}
#endif
pass DosFXPass
{
VertexShader = ReShade::VS_PostProcess;
PixelShader = PS_DosFX;
}
}

}

#endif

#include EFFECT_CONFIG_UNDEF(IDDQD)

/*
CREDITS:
mouaif.wordpress.com/2009/01/05/photosho...h-with-glsl-shaders/
www.shadertoy.com/view/Mt2XDK
*/

#include EFFECT_CONFIG(IDDQD)

#if USE_GRADIENTFX

#pragma message "Gradient overlay effect by smack0007 (ported and modified by IDDQD)\n"

namespace IDDQD
{
#define BlendLinearDodgef BlendAddf
#define BlendLinearBurnf BlendSubstractf
#define BlendAddf(base, blend) min(base + blend, 1.0)
#define BlendSubstractf(base, blend) max(base + blend - 1.0, 0.0)
#define BlendLightenf(base, blend) max(blend, base)
#define BlendDarkenf(base, blend) min(blend, base)
#define BlendLinearLightf(base, blend) (blend < 0.5 ? BlendLinearBurnf(base, (2.0 * blend)) : BlendLinearDodgef(base, (2.0 * (blend - 0.5))))
#define BlendScreenf(base, blend) (1.0 - ((1.0 - base) * (1.0 - blend)))
#define BlendOverlayf(base, blend) (base < 0.5 ? (2.0 * base * blend) : (1.0 - 2.0 * (1.0 - base) * (1.0 - blend)))
#define BlendSoftLightf(base, blend) ((blend < 0.5) ? (2.0 * base * blend + base * base * (1.0 - 2.0 * blend)) : (sqrt(base) * (2.0 * blend - 1.0) + 2.0 * base * (1.0 - blend)))
#define BlendColorDodgef(base, blend) ((blend == 1.0) ? blend : min(base / (1.0 - blend), 1.0))
#define BlendColorBurnf(base, blend) ((blend == 0.0) ? blend : max((1.0 - ((1.0 - base) / blend)), 0.0))
#define BlendVividLightf(base, blend) ((blend < 0.5) ? BlendColorBurnf(base, (2.0 * blend)) : BlendColorDodgef(base, (2.0 * (blend - 0.5))))
#define BlendPinLightf(base, blend) ((blend < 0.5) ? BlendDarkenf(base, (2.0 * blend)) : BlendLightenf(base, (2.0 *(blend - 0.5))))
#define BlendHardMixf(base, blend) ((BlendVividLightf(base, blend) < 0.5) ? 0.0 : 1.0)
#define BlendReflectf(base, blend) ((blend == 1.0) ? blend : min(base * base / (1.0 - blend), 1.0))

/*
** Vector3 blending modes (I edit BlendNormal,BlendOpacity)
*/

// Component wise blending
#define GradientBlend(base, blend, funcf) float3(funcf(base.r, blend.r), funcf(base.g, blend.g), funcf(base.b, blend.b))

#define BlendNormal(base, blend) lerp(base,blend,GradientBlendPower)
#define BlendLighten BlendLightenf
#define BlendDarken BlendDarkenf
#define BlendMultiply(base, blend) (base * blend)
#define BlendAverage(base, blend) ((base + blend) / 2.0)
#define BlendAdd(base, blend) min(base + blend, float3(1.0, 1.0, 1.0))
#define BlendSubstract(base, blend) max(base + blend - float3(1.0, 1.0, 1.0), float3(0.0, 0.0, 0.0))
#define BlendDifference(base, blend) abs(base - blend)
#define BlendNegation(base, blend) (float3(1.0, 1.0, 1.0) - abs(float3(1.0, 1.0, 1.0) - base - blend))
#define BlendExclusion(base, blend) (base + blend - 2.0 * base * blend)
#define BlendScreen(base, blend) GradientBlend(base, blend, BlendScreenf)
#define BlendOverlay(base, blend) GradientBlend(base, blend, BlendOverlayf)
#define BlendSoftLight(base, blend) GradientBlend(base, blend, BlendSoftLightf)
#define BlendHardLight(base, blend) BlendOverlay(blend, base)
#define BlendColorDodge(base, blend) GradientBlend(base, blend, BlendColorDodgef)
#define BlendColorBurn(base, blend) GradientBlend(base, blend, BlendColorBurnf)
#define BlendLinearDodge BlendAdd
#define BlendLinearBurn BlendSubstract

// Linear Light is another contrast-increasing mode
// If the blend color is darker than midgray, Linear Light darkens the image by decreasing the brightness. If the blend color is lighter than midgray, the result is a brighter image due to increased brightness.
#define BlendLinearLight(base, blend) GradientBlend(base, blend, BlendLinearLightf)

#define BlendVividLight(base, blend) GradientBlend(base, blend, BlendVividLightf)
#define BlendPinLight(base, blend) GradientBlend(base, blend, BlendPinLightf)
#define BlendHardMix(base, blend) GradientBlend(base, blend, BlendHardMixf)
#define BlendReflect(base, blend) GradientBlend(base, blend, BlendReflectf)
#define BlendGlow(base, blend) BlendReflect(blend, base)
#define BlendPhoenix(base, blend) (min(base, blend) - max(base, blend) + float3(1.0, 1.0, 1.0))
#define BlendOpacity(base, blend) (GradientShift*(base, blend) * GradientBlendPower + base * (1.0 - GradientBlendPower))


float3 GradientRGBToHSL(float3 color)
{
float3 hsl; // init to 0 to avoid warnings ? (and reverse if + remove first part)

float fmin = min(min(color.r, color.g), color.b); //Min. value of RGB
float fmax = max(max(color.r, color.g), color.b); //Max. value of RGB
float delta = fmax - fmin; //Delta RGB value

hsl.z = (fmax + fmin) / 2.0; // Luminance

if (delta == 0.0) //This is a gray, no chroma...
{
hsl.x = 0.0; // Hue
hsl.y = 0.0; // Saturation
}
else //Chromatic data...
{
if (hsl.z < 0.5)
hsl.y = delta / (fmax + fmin); // Saturation
else
hsl.y = delta / (2.0 - fmax - fmin); // Saturation

float deltaR = (((fmax - color.r) / 6.0) + (delta / 2.0)) / delta;
float deltaG = (((fmax - color.g) / 6.0) + (delta / 2.0)) / delta;
float deltaB = (((fmax - color.b) / 6.0) + (delta / 2.0)) / delta;

if (color.r == fmax )
hsl.x = deltaB - deltaG; // Hue
else if (color.g == fmax)
hsl.x = (1.0 / 3.0) + deltaR - deltaB; // Hue
else if (color.b == fmax)
hsl.x = (2.0 / 3.0) + deltaG - deltaR; // Hue

if (hsl.x < 0.0)
hsl.x += 1.0; // Hue
else if (hsl.x > 1.0)
hsl.x -= 1.0; // Hue
}

return hsl;
}

float GradientHueToRGB(float f1, float f2, float hue)
{
if (hue < 0.0)
hue += 1.0;
else if (hue > 1.0)
hue -= 1.0;
float res;
if ((6.0 * hue) < 1.0)
res = f1 + (f2 - f1) * 6.0 * hue;
else if ((2.0 * hue) < 1.0)
res = f2;
else if ((3.0 * hue) < 2.0)
res = f1 + (f2 - f1) * ((2.0 / 3.0) - hue) * 6.0;
else
res = f1;
return res;
}

float3 GradientHSLToRGB(float3 hsl)
{
float3 rgb;

if (hsl.y == 0.0)
rgb = float3(hsl.z, hsl.z, hsl.z); // Luminance
else
{
float f2;

if (hsl.z < 0.5)
f2 = hsl.z * (1.0 + hsl.y);
else
f2 = (hsl.z + hsl.y) - (hsl.y * hsl.z);

float f1 = 2.0 * hsl.z - f2;

rgb.r = GradientHueToRGB(f1, f2, hsl.x + (1.0/3.0));
rgb.g = GradientHueToRGB(f1, f2, hsl.x);
rgb.b= GradientHueToRGB(f1, f2, hsl.x - (1.0/3.0));
}

return rgb;
}

// Hue Blend mode creates the result color by combining the luminance and saturation of the base color with the hue of the blend color.
float3 GradientBlendHue(float3 base, float3 blend)
{
float3 baseHSL = GradientRGBToHSL(base);
return GradientHSLToRGB(float3(GradientRGBToHSL(blend).r, baseHSL.g, baseHSL.b));
}

// Saturation Blend mode creates the result color by combining the luminance and hue of the base color with the saturation of the blend color.
float3 GradientBlendSaturation(float3 base, float3 blend)
{
float3 baseHSL = GradientRGBToHSL(base);
return GradientHSLToRGB(float3(baseHSL.r, GradientRGBToHSL(blend).g, baseHSL.b));
}

// Color Mode keeps the brightness of the base color and applies both the hue and saturation of the blend color.
float3 GradientBlendColor(float3 base, float3 blend)
{
float3 blendHSL = GradientRGBToHSL(blend);
return GradientHSLToRGB(float3(blendHSL.r, blendHSL.g, GradientRGBToHSL(base).b));
}

// Luminosity Blend mode creates the result color by combining the hue and saturation of the base color with the luminance of the blend color.
float3 GradientBlendLuminosity(float3 base, float3 blend)
{
float3 baseHSL = GradientRGBToHSL(base);
return GradientHSLToRGB(float3(baseHSL.r, baseHSL.g, GradientRGBToHSL(base).b));
}

float4 PS_GradientFX(float4 vpos : SV_Position, float2 texcoord : TEXCOORD) : SV_Target
{
float4 Color = tex2D(ReShade::BackBuffer, texcoord);
float4 MainColor = float4(0,0,0,0);

float angle = radians(GradientRotation) + atan2(texcoord.y, texcoord.x);

texcoord = float2(cos(angle) * length(texcoord), sin(angle) * length(texcoord)) + float2(0.5, 0.5);

MainColor.rgb = lerp(GradientTop, GradientBottom, smoothstep(0.0, 1.0, texcoord.x - GradientShift));

MainColor.rgb = lerp(MainColor.rgb,Color.rgb,1.0-GradientOpacility);

Color.rgb = GradientBlendLuminosity(Color.rgb,MainColor.rgb);
Color.rgb = GradientBlendHue(Color.rgb,MainColor.rgb);
Color.rgb = GradientBlendSaturation(Color.rgb,MainColor.rgb);
Color.rgb = GradientBlendColor(Color.rgb,MainColor.rgb);

Color.rgb = GradientBlendMode(Color.rgb,MainColor.rgb);


//Color.rgb = GradientPower;

return Color;
}

technique GradientFX_Tech <bool enabled = RESHADE_START_ENABLED; int toggle = GradientFX_ToggleKey; >
{
pass GradientFXPass
{
VertexShader = ReShade::VS_PostProcess;
PixelShader = PS_GradientFX;
}
}

}

#endif

#include EFFECT_CONFIG_UNDEF(IDDQD)