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Add some shaders and update others. (#3234)
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- Add fxaa.fx, aa-shader-40.fx, bilateral.fx;
- Update geom.fx, crt-geom.fx, bicubic.fx, lanczos3.fx, super-xbr.fx.
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@Hyllian
Hyllian authored Jun 27, 2024
1 parent ebf50ed commit ad27f8b
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104 changes: 104 additions & 0 deletions data/resources/shaders/reshade/Shaders/anti-aliasing/aa-shader-4.0.fx
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#include "ReShade.fxh"

/*
Copyright (C) 2016 guest(r) - guest.r@gmail.com
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.
*/

uniform float2 NormalizedNativePixelSize < source = "normalized_native_pixel_size"; >;

sampler2D sBackBuffer{Texture=ReShade::BackBufferTex;AddressU=CLAMP;AddressV=CLAMP;AddressW=CLAMP;MagFilter=POINT;MinFilter=POINT;};

static const float3 dt = float3(1.0,1.0,1.0);

float3 texture2d(sampler2D tex, float2 coord, float4 yx) {

float3 s00 = tex2D(tex, coord + yx.zw).xyz;
float3 s20 = tex2D(tex, coord + yx.xw).xyz;
float3 s22 = tex2D(tex, coord + yx.xy).xyz;
float3 s02 = tex2D(tex, coord + yx.zy).xyz;

float m1=dot(abs(s00-s22),dt)+0.001;
float m2=dot(abs(s02-s20),dt)+0.001;

return 0.5*(m2*(s00+s22)+m1*(s02+s20))/(m1+m2);
}



float4 PS_aa_shader_40(float4 vpos: SV_Position, float2 vTexCoord : TEXCOORD0) : SV_Target
{
// Calculating texel coordinates
float2 size = 4.0 / NormalizedNativePixelSize;
float2 inv_size = 1.0 / size;

float4 yx = float4(inv_size, -inv_size);

float2 OGL2Pos = vTexCoord * size;

float2 fp = frac(OGL2Pos);
float2 dx = float2(inv_size.x,0.0);
float2 dy = float2(0.0, inv_size.y);
float2 g1 = float2(inv_size.x,inv_size.y);
float2 g2 = float2(-inv_size.x,inv_size.y);

float2 pC4 = floor(OGL2Pos) * 1.0001 * inv_size;

// Reading the texels
float3 C1 = texture2d(sBackBuffer, pC4 - dy, yx);
float3 C0 = texture2d(sBackBuffer, pC4 - g1, yx);
float3 C2 = texture2d(sBackBuffer, pC4 - g2, yx);
float3 C3 = texture2d(sBackBuffer, pC4 - dx, yx);
float3 C4 = texture2d(sBackBuffer, pC4 , yx);
float3 C5 = texture2d(sBackBuffer, pC4 + dx, yx);
float3 C6 = texture2d(sBackBuffer, pC4 + g2, yx);
float3 C7 = texture2d(sBackBuffer, pC4 + dy, yx);
float3 C8 = texture2d(sBackBuffer, pC4 + g1, yx);

float3 ul, ur, dl, dr;
float m1, m2;

m1 = dot(abs(C0-C4),dt)+0.001;
m2 = dot(abs(C1-C3),dt)+0.001;
ul = (m2*(C0+C4)+m1*(C1+C3))/(m1+m2);

m1 = dot(abs(C1-C5),dt)+0.001;
m2 = dot(abs(C2-C4),dt)+0.001;
ur = (m2*(C1+C5)+m1*(C2+C4))/(m1+m2);

m1 = dot(abs(C3-C7),dt)+0.001;
m2 = dot(abs(C6-C4),dt)+0.001;
dl = (m2*(C3+C7)+m1*(C6+C4))/(m1+m2);

m1 = dot(abs(C4-C8),dt)+0.001;
m2 = dot(abs(C5-C7),dt)+0.001;
dr = (m2*(C4+C8)+m1*(C5+C7))/(m1+m2);

float3 c11 = 0.5*((dr*fp.x+dl*(1-fp.x))*fp.y+(ur*fp.x+ul*(1-fp.x))*(1-fp.y) );

return float4(c11, 1.0);
}



technique aa_shader_40
{
pass
{
VertexShader = PostProcessVS;
PixelShader = PS_aa_shader_40;
}
}
271 changes: 271 additions & 0 deletions data/resources/shaders/reshade/Shaders/anti-aliasing/fxaa.fx
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#include "ReShade.fxh"


/**
* @license
* Copyright (c) 2011 NVIDIA Corporation. All rights reserved.
*
* TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THIS SOFTWARE IS PROVIDED
* *AS IS* AND NVIDIA AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES, EITHER EXPRESS
* OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, NONINFRINGEMENT,IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL NVIDIA
* OR ITS SUPPLIERS BE LIABLE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT, OR
* CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS
* OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR ANY
* OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
* EVEN IF NVIDIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*/

/*
FXAA_PRESET - Choose compile-in knob preset 0-5.
------------------------------------------------------------------------------
FXAA_EDGE_THRESHOLD - The minimum amount of local contrast required
to apply algorithm.
1.0/3.0 - too little
1.0/4.0 - good start
1.0/8.0 - applies to more edges
1.0/16.0 - overkill
------------------------------------------------------------------------------
FXAA_EDGE_THRESHOLD_MIN - Trims the algorithm from processing darks.
Perf optimization.
1.0/32.0 - visible limit (smaller isn't visible)
1.0/16.0 - good compromise
1.0/12.0 - upper limit (seeing artifacts)
------------------------------------------------------------------------------
FXAA_SEARCH_STEPS - Maximum number of search steps for end of span.
------------------------------------------------------------------------------
FXAA_SEARCH_THRESHOLD - Controls when to stop searching.
1.0/4.0 - seems to be the best quality wise
------------------------------------------------------------------------------
FXAA_SUBPIX_TRIM - Controls sub-pixel aliasing removal.
1.0/2.0 - low removal
1.0/3.0 - medium removal
1.0/4.0 - default removal
1.0/8.0 - high removal
0.0 - complete removal
------------------------------------------------------------------------------
FXAA_SUBPIX_CAP - Insures fine detail is not completely removed.
This is important for the transition of sub-pixel detail,
like fences and wires.
3.0/4.0 - default (medium amount of filtering)
7.0/8.0 - high amount of filtering
1.0 - no capping of sub-pixel aliasing removal
*/


uniform float2 BufferToViewportRatio < source = "buffer_to_viewport_ratio"; >;
uniform float2 ViewportSize < source = "viewportsize"; >;

sampler2D sBackBuffer{Texture=ReShade::BackBufferTex;AddressU=CLAMP;AddressV=CLAMP;AddressW=CLAMP;MagFilter=LINEAR;MinFilter=LINEAR;};


#ifndef FXAA_PRESET
#define FXAA_PRESET 6
#endif
#if (FXAA_PRESET == 3)
#define FXAA_EDGE_THRESHOLD (1.0/8.0)
#define FXAA_EDGE_THRESHOLD_MIN (1.0/16.0)
#define FXAA_SEARCH_STEPS 16
#define FXAA_SEARCH_THRESHOLD (1.0/4.0)
#define FXAA_SUBPIX_CAP (3.0/4.0)
#define FXAA_SUBPIX_TRIM (1.0/4.0)
#endif
#if (FXAA_PRESET == 4)
#define FXAA_EDGE_THRESHOLD (1.0/8.0)
#define FXAA_EDGE_THRESHOLD_MIN (1.0/24.0)
#define FXAA_SEARCH_STEPS 24
#define FXAA_SEARCH_THRESHOLD (1.0/4.0)
#define FXAA_SUBPIX_CAP (3.0/4.0)
#define FXAA_SUBPIX_TRIM (1.0/4.0)
#endif
#if (FXAA_PRESET == 5)
#define FXAA_EDGE_THRESHOLD (1.0/8.0)
#define FXAA_EDGE_THRESHOLD_MIN (1.0/24.0)
#define FXAA_SEARCH_STEPS 32
#define FXAA_SEARCH_THRESHOLD (1.0/4.0)
#define FXAA_SUBPIX_CAP (3.0/4.0)
#define FXAA_SUBPIX_TRIM (1.0/4.0)
#endif
#if (FXAA_PRESET == 6)
#define FXAA_EDGE_THRESHOLD (1.0/8.0)
#define FXAA_EDGE_THRESHOLD_MIN (1.0/24.0)
#define FXAA_SEARCH_STEPS 32
#define FXAA_SEARCH_THRESHOLD (1.0/4.0)
#define FXAA_SUBPIX_CAP (1.0)
#define FXAA_SUBPIX_TRIM (0.0)
#endif

#define FXAA_SUBPIX_TRIM_SCALE (1.0/(1.0 - FXAA_SUBPIX_TRIM))

// Return the luma, the estimation of luminance from rgb inputs.
// This approximates luma using one FMA instruction,
// skipping normalization and tossing out blue.
// FxaaLuma() will range 0.0 to 2.963210702.
float FxaaLuma(float3 rgb) {
return rgb.y * (0.587/0.299) + rgb.x;
}

float3 FxaaLerp3(float3 a, float3 b, float amountOfA) {
return (-float3(amountOfA, amountOfA, amountOfA) * b) + ((a * float3(amountOfA, amountOfA, amountOfA)) + b);
}

float4 FxaaTexOff(sampler2D tex, float2 pos, int2 off, float2 rcpFrame) {
float x = pos.x + float(off.x) * rcpFrame.x;
float y = pos.y + float(off.y) * rcpFrame.y;
return tex2D(tex, float2(x, y));
}

// pos is the output of FxaaVertexShader interpolated across screen.
// xy -> actual texture position {0.0 to 1.0}
// rcpFrame should be a uniform equal to {1.0/frameWidth, 1.0/frameHeight}
float3 FxaaPixelShader(float2 pos, sampler2D tex, float2 rcpFrame)
{
float3 rgbN = FxaaTexOff(tex, pos.xy, int2( 0,-1), rcpFrame).xyz;
float3 rgbW = FxaaTexOff(tex, pos.xy, int2(-1, 0), rcpFrame).xyz;
float3 rgbM = FxaaTexOff(tex, pos.xy, int2( 0, 0), rcpFrame).xyz;
float3 rgbE = FxaaTexOff(tex, pos.xy, int2( 1, 0), rcpFrame).xyz;
float3 rgbS = FxaaTexOff(tex, pos.xy, int2( 0, 1), rcpFrame).xyz;

float lumaN = FxaaLuma(rgbN);
float lumaW = FxaaLuma(rgbW);
float lumaM = FxaaLuma(rgbM);
float lumaE = FxaaLuma(rgbE);
float lumaS = FxaaLuma(rgbS);
float rangeMin = min(lumaM, min(min(lumaN, lumaW), min(lumaS, lumaE)));
float rangeMax = max(lumaM, max(max(lumaN, lumaW), max(lumaS, lumaE)));

float range = rangeMax - rangeMin;
if(range < max(FXAA_EDGE_THRESHOLD_MIN, rangeMax * FXAA_EDGE_THRESHOLD))
{
return rgbM;
}

float3 rgbL = rgbN + rgbW + rgbM + rgbE + rgbS;

float lumaL = (lumaN + lumaW + lumaE + lumaS) * 0.25;
float rangeL = abs(lumaL - lumaM);
float blendL = max(0.0, (rangeL / range) - FXAA_SUBPIX_TRIM) * FXAA_SUBPIX_TRIM_SCALE;
blendL = min(FXAA_SUBPIX_CAP, blendL);

float3 rgbNW = FxaaTexOff(tex, pos.xy, int2(-1,-1), rcpFrame).xyz;
float3 rgbNE = FxaaTexOff(tex, pos.xy, int2( 1,-1), rcpFrame).xyz;
float3 rgbSW = FxaaTexOff(tex, pos.xy, int2(-1, 1), rcpFrame).xyz;
float3 rgbSE = FxaaTexOff(tex, pos.xy, int2( 1, 1), rcpFrame).xyz;
rgbL += (rgbNW + rgbNE + rgbSW + rgbSE);
rgbL *= (1.0/float3(9.0, 9.0, 9.0));

float lumaNW = FxaaLuma(rgbNW);
float lumaNE = FxaaLuma(rgbNE);
float lumaSW = FxaaLuma(rgbSW);
float lumaSE = FxaaLuma(rgbSE);

float edgeVert =
abs((0.25 * lumaNW) + (-0.5 * lumaN) + (0.25 * lumaNE)) +
abs((0.50 * lumaW ) + (-1.0 * lumaM) + (0.50 * lumaE )) +
abs((0.25 * lumaSW) + (-0.5 * lumaS) + (0.25 * lumaSE));
float edgeHorz =
abs((0.25 * lumaNW) + (-0.5 * lumaW) + (0.25 * lumaSW)) +
abs((0.50 * lumaN ) + (-1.0 * lumaM) + (0.50 * lumaS )) +
abs((0.25 * lumaNE) + (-0.5 * lumaE) + (0.25 * lumaSE));

bool horzSpan = edgeHorz >= edgeVert;
float lengthSign = horzSpan ? -rcpFrame.y : -rcpFrame.x;

if(!horzSpan)
{
lumaN = lumaW;
lumaS = lumaE;
}

float gradientN = abs(lumaN - lumaM);
float gradientS = abs(lumaS - lumaM);
lumaN = (lumaN + lumaM) * 0.5;
lumaS = (lumaS + lumaM) * 0.5;

if (gradientN < gradientS)
{
lumaN = lumaS;
lumaN = lumaS;
gradientN = gradientS;
lengthSign *= -1.0;
}

float2 posN;
posN.x = pos.x + (horzSpan ? 0.0 : lengthSign * 0.5);
posN.y = pos.y + (horzSpan ? lengthSign * 0.5 : 0.0);

gradientN *= FXAA_SEARCH_THRESHOLD;

float2 posP = posN;
float2 offNP = horzSpan ? float2(rcpFrame.x, 0.0) : float2(0.0, rcpFrame.y);
float lumaEndN = lumaN;
float lumaEndP = lumaN;
bool doneN = false;
bool doneP = false;
posN += offNP * float2(-1.0, -1.0);
posP += offNP * float2( 1.0, 1.0);

for(int i = 0; i < FXAA_SEARCH_STEPS; i++) {
if(!doneN)
{
lumaEndN = FxaaLuma(tex2D(tex, posN.xy).xyz);
}
if(!doneP)
{
lumaEndP = FxaaLuma(tex2D(tex, posP.xy).xyz);
}

doneN = doneN || (abs(lumaEndN - lumaN) >= gradientN);
doneP = doneP || (abs(lumaEndP - lumaN) >= gradientN);

if(doneN && doneP)
{
break;
}
if(!doneN)
{
posN -= offNP;
}
if(!doneP)
{
posP += offNP;
}
}

float dstN = horzSpan ? pos.x - posN.x : pos.y - posN.y;
float dstP = horzSpan ? posP.x - pos.x : posP.y - pos.y;
bool directionN = dstN < dstP;
lumaEndN = directionN ? lumaEndN : lumaEndP;

if(((lumaM - lumaN) < 0.0) == ((lumaEndN - lumaN) < 0.0))
{
lengthSign = 0.0;
}


float spanLength = (dstP + dstN);
dstN = directionN ? dstN : dstP;
float subPixelOffset = (0.5 + (dstN * (-1.0/spanLength))) * lengthSign;
float3 rgbF = tex2D(tex, float2(
pos.x + (horzSpan ? 0.0 : subPixelOffset),
pos.y + (horzSpan ? subPixelOffset : 0.0))).xyz;
return FxaaLerp3(rgbL, rgbF, blendL);
}

float4 PS_FXAA(float4 vpos: SV_Position, float2 vTexCoord : TEXCOORD0) : SV_Target
{
float3 color = FxaaPixelShader(vTexCoord, sBackBuffer, 1.0 / (ViewportSize*BufferToViewportRatio));

return float4(color, 1.0);
}



technique FXAA
{
pass
{
VertexShader = PostProcessVS;
PixelShader = PS_FXAA;
}
}
5 changes: 3 additions & 2 deletions data/resources/shaders/reshade/Shaders/crt/crt-geom.fx
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Expand Up @@ -183,6 +183,7 @@ uniform float2 NormalizedNativePixelSize < source = "normalized_native_pixel_siz
uniform float UpscaleMultiplier < source = "upscale_multiplier"; >;
uniform float2 ViewportSize < source = "viewportsize"; >;

sampler2D sBackBuffer{Texture=ReShade::BackBufferTex;AddressU=BORDER;AddressV=BORDER;AddressW=BORDER;MagFilter=POINT;MinFilter=POINT;};

// Comment the next line to disable interpolation in linear gamma (and
// gain speed).
Expand All @@ -199,9 +200,9 @@ uniform float2 ViewportSize < source = "viewportsize"; >;
#define PI 3.141592653589

#ifdef LINEAR_PROCESSING
# define TEX2D(c) pow(tex2D(ReShade::BackBuffer, (c)), float4(CRTgamma,CRTgamma,CRTgamma,CRTgamma))
# define TEX2D(c) pow(tex2D(sBackBuffer, (c)), float4(CRTgamma,CRTgamma,CRTgamma,CRTgamma))
#else
# define TEX2D(c) tex2D(ReShade::BackBuffer, (c))
# define TEX2D(c) tex2D(sBackBuffer, (c))
#endif

// aspect ratio
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