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https://github.com/cemu-project/cemu_graphic_packs.git
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Add scaling filters (#391)
Add your titleID in rules.txt for them to work. Updated Cemuhook's Bicubic and Lanczos scaling shader. Credit rajkosto.
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NAVras-Z
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commit
c8aca9778c
48
Filters/Bicubic (4 taps)/output.glsl
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48
Filters/Bicubic (4 taps)/output.glsl
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#version 420
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in vec2 passUV;
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layout(binding=0) uniform sampler2D textureSrc;
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uniform vec2 textureSrcResolution;
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layout(location = 0) out vec4 colorOut0;
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vec4 cubic(float x)
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{
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float x2 = x * x;
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float x3 = x2 * x;
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vec4 w;
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w.x = -x3 + 3 * x2 - 3 * x + 1;
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w.y = 3 * x3 - 6 * x2 + 4;
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w.z = -3 * x3 + 3 * x2 + 3 * x + 1;
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w.w = x3;
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return w / 6.0;
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}
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vec4 bcFilter(vec2 texcoord, vec2 texscale)
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{
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vec2 tc = floor( texcoord - 0.5 ) + 0.5;
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vec2 f = texcoord - tc;
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vec4 xcubic = cubic(f.x);
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vec4 ycubic = cubic(f.y);
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vec4 c = vec4(tc.x - 1.0, tc.x + 1.0, tc.y - 1.0, tc.y + 1.0);
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vec4 s = vec4(xcubic.x + xcubic.y, xcubic.z + xcubic.w, ycubic.x + ycubic.y, ycubic.z + ycubic.w);
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vec4 offset = c + vec4(xcubic.y, xcubic.w, ycubic.y, ycubic.w) / s;
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vec4 sample0 = texture(textureSrc, vec2(offset.x, offset.z) * texscale);
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vec4 sample1 = texture(textureSrc, vec2(offset.y, offset.z) * texscale);
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vec4 sample2 = texture(textureSrc, vec2(offset.x, offset.w) * texscale);
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vec4 sample3 = texture(textureSrc, vec2(offset.y, offset.w) * texscale);
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float sx = s.x / (s.x + s.y);
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float sy = s.z / (s.z + s.w);
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return mix(
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mix(sample3, sample2, sx),
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mix(sample1, sample0, sx), sy);
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}
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void main(){
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colorOut0 = vec4(bcFilter(passUV*textureSrcResolution, vec2(1.0,1.0)/textureSrcResolution).rgb,1.0);
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}
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10
Filters/Bicubic (4 taps)/rules.txt
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10
Filters/Bicubic (4 taps)/rules.txt
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[Definition]
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name = Optimized Bicubic B-spline resampler
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titleIds =
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path = "Filters/Bicubic (4 taps)"
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description = Cemu's Bicubic. Because it's B-spline so it was optimized down to 4 taps.
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version = 3
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[OutputShader]
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upscaleMagFilter = Linear
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downscaleMagFilter = Linear
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97
Filters/Bicubic/output.glsl
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97
Filters/Bicubic/output.glsl
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// https://github.com/obsproject/obs-studio/blob/master/libobs/data/bicubic_scale.effect // added customizable polynomials back
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#version 420
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in vec2 passUV;
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layout(binding=0) uniform sampler2D textureSrc;
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uniform vec2 textureSrcResolution;
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layout(location = 0) out vec4 colorOut0;
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float weight(float x)
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{
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float ax = abs(x);
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const float B = $b;
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const float C = $c;
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if (ax < 2.0) {
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float x_squared = x * x;
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if (ax < 1.0) {
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return (x_squared *
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((12.0 - 9.0 * B - 6.0 * C) * ax +
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(-18.0 + 12.0 * B + 6.0 * C)) +
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(6.0 - 2.0 * B))
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/ 6.0;
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}
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return (x_squared *
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((-B - 6.0 * C) * ax + (6.0 * B + 30.0 * C)) +
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(-12.0 * B - 48.0 * C) * ax +
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(8.0 * B + 24.0 * C))
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/ 6.0;
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}
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return 0.0;
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}
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vec4 weight4(float x)
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{
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return vec4(
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weight(x - 2.0),
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weight(x - 1.0),
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weight(x),
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weight(x + 1.0));
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}
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vec4 DrawBicubic(vec2 f_in)
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{
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vec2 stepxy = 1.0/textureSrcResolution;
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vec2 pos = f_in.st + stepxy * 0.5;
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vec2 f = fract(pos * textureSrcResolution);
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vec4 rowtaps = weight4(1.0 - f.x);
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vec4 coltaps = weight4(1.0 - f.y);
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vec2 uv0 = (-1.5 - f) * stepxy + pos;
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vec2 uv1 = uv0 + stepxy;
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vec2 uv2 = uv1 + stepxy;
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vec2 uv3 = uv2 + stepxy;
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float u_weight_sum = rowtaps.y + rowtaps.z;
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float u_middle_offset = rowtaps.z * stepxy.x / u_weight_sum;
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float u_middle = uv1.x + u_middle_offset;
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float v_weight_sum = coltaps.y + coltaps.z;
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float v_middle_offset = coltaps.z * stepxy.y / v_weight_sum;
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float v_middle = uv1.y + v_middle_offset;
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// wrap doesn't apply to texelFetch
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// clamp
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// ivec2 coord_top_left = ivec2(max(uv0 * textureSrcResolution, 0.5));
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// ivec2 coord_bottom_right = ivec2(min(uv3 * textureSrcResolution, textureSrcResolution - 0.5));
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// mirror
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ivec2 coord_top_left = ivec2(abs(uv0 * textureSrcResolution));
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ivec2 coord_bottom_right = ivec2(textureSrcResolution - abs(uv3 * textureSrcResolution - textureSrcResolution));
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vec4 top = texelFetch(textureSrc, ivec2(coord_top_left), 0) * rowtaps.x;
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top += texture(textureSrc, vec2(u_middle, uv0.y)) * u_weight_sum;
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top += texelFetch(textureSrc, ivec2(coord_bottom_right.x, coord_top_left.y), 0) * rowtaps.w;
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vec4 total = top * coltaps.x;
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vec4 middle = texture(textureSrc, vec2(uv0.x, v_middle)) * rowtaps.x;
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middle += texture(textureSrc, vec2(u_middle, v_middle)) * u_weight_sum;
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middle += texture(textureSrc, vec2(uv3.x, v_middle)) * rowtaps.w;
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total += middle * v_weight_sum;
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vec4 bottom = texelFetch(textureSrc, ivec2(coord_top_left.x, coord_bottom_right.y), 0) * rowtaps.x;
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bottom += texture(textureSrc, vec2(u_middle, uv3.y)) * u_weight_sum;
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bottom += texelFetch(textureSrc, ivec2(coord_bottom_right), 0) * rowtaps.w;
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total += bottom * coltaps.w;
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return total;
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}
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void main()
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{
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colorOut0 = vec4(DrawBicubic(passUV).rgb,1.0);
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}
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39
Filters/Bicubic/rules.txt
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39
Filters/Bicubic/rules.txt
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[Definition]
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name = Optimized Bicubic spline resampler
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titleIds =
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path = "Filters/Bicubic"
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description = The b and c can adjust the properties of the cubic; sometimes referred to as "blurring" and "ringing" respectively.
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version = 3
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[OutputShader]
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upscaleMagFilter = Linear
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downscaleMagFilter = Linear
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[Preset]
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name = Catmull-Rom
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$b = 0.0
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$c = 0.5
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[Preset]
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name = Mitchell-Netravali
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$b = 1/3
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$c = 1/3
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[Preset]
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name = B-spline
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$b = 1.0
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$c = 0.0
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[Preset]
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name = Photoshop
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$b = 0.0
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$c = 0.75
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[Preset]
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name = Custom (edit in rule.txt)
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$b = 0.0
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$c = 0.0
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# Generally b,c >= 0. the shader can't produce negative weight at 0-1 because of bilinear optimization
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# But some combinations of negative b,c might have non-negative weight
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# Optionally [b + 2c = 1] for numerically accurate filter
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128
Filters/Jinc/output.glsl
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128
Filters/Jinc/output.glsl
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// https://github.com/libretro/glsl-shaders/blob/master/nnedi3/shaders/jinc2-cshift-rgb.glsl
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// https://github.com/libretro/common-shaders/blob/master/nedi/shaders/nedi-jinc.cg
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// https://cemuhook.sshnuke.net/sampleResizers.zip
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/*
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Hyllian's jinc windowed-jinc 2-lobe with anti-ringing Shader
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Copyright (C) 2011-2016 Hyllian - sergiogdb@gmail.com
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#version 420
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in vec2 passUV;
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layout(binding=0) uniform sampler2D textureSrc;
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uniform vec2 textureSrcResolution;
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layout(location = 0) out vec4 colorOut0;
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/*
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This is an approximation of Jinc(x)*Jinc(x*r1/r2) for x < 2.5,
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where r1 and r2 are the first two zeros of jinc function.
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For a jinc 2-lobe best approximation, use A=0.5 and B=0.825.
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*/
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// #define halfpi 1.5707963267948966192313216916398 // not used?
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#define pi 3.1415926535897932384626433832795
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#define wa ($Window_Sinc*pi)
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#define wb ($SINC*pi)
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float resampler(vec2 pt1, vec2 pt2)
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{
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vec2 v = pt2 - pt1;
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float d = sqrt(dot(v,v)); // Calculates the distance between two points
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return (d==0.0) ? wa*wb : sin(d*wa)*sin(d*wb)/(d*d);
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}
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vec3 min4(vec3 a, vec3 b, vec3 c, vec3 d)
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{
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return min(a, min(b, min(c, d)));
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}
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vec3 max4(vec3 a, vec3 b, vec3 c, vec3 d)
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{
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return max(a, max(b, max(c, d)));
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}
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vec4 JINC2_sharp(vec2 texture_size, vec2 texCoord)
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{
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vec3 color;
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mat4x4 weights;
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vec2 dx = vec2(1.0, 0.0);
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vec2 dy = vec2(0.0, 1.0);
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vec2 pc = texCoord*texture_size;
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vec2 tc = (floor(pc-vec2(0.5,0.5))+vec2(0.5,0.5));
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weights[0] = vec4(resampler(pc, tc -dx -dy), resampler(pc, tc -dy), resampler(pc, tc +dx -dy), resampler(pc, tc+2.0*dx -dy));
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weights[1] = vec4(resampler(pc, tc -dx ), resampler(pc, tc ), resampler(pc, tc +dx ), resampler(pc, tc+2.0*dx ));
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weights[2] = vec4(resampler(pc, tc -dx +dy), resampler(pc, tc +dy), resampler(pc, tc +dx +dy), resampler(pc, tc+2.0*dx +dy));
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weights[3] = vec4(resampler(pc, tc -dx+2.0*dy), resampler(pc, tc +2.0*dy), resampler(pc, tc +dx+2.0*dy), resampler(pc, tc+2.0*dx+2.0*dy));
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dx = dx/texture_size;
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dy = dy/texture_size;
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tc = tc/texture_size;
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// reading the texels
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vec3 c00 = texture(textureSrc, tc -dx -dy).xyz;
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vec3 c10 = texture(textureSrc, tc -dy).xyz;
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vec3 c20 = texture(textureSrc, tc +dx -dy).xyz;
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vec3 c30 = texture(textureSrc, tc+2.0*dx -dy).xyz;
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vec3 c01 = texture(textureSrc, tc -dx ).xyz;
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vec3 c11 = texture(textureSrc, tc ).xyz;
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vec3 c21 = texture(textureSrc, tc +dx ).xyz;
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vec3 c31 = texture(textureSrc, tc+2.0*dx ).xyz;
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vec3 c02 = texture(textureSrc, tc -dx +dy).xyz;
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vec3 c12 = texture(textureSrc, tc +dy).xyz;
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vec3 c22 = texture(textureSrc, tc +dx +dy).xyz;
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vec3 c32 = texture(textureSrc, tc+2.0*dx +dy).xyz;
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vec3 c03 = texture(textureSrc, tc -dx+2.0*dy).xyz;
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vec3 c13 = texture(textureSrc, tc +2.0*dy).xyz;
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vec3 c23 = texture(textureSrc, tc +dx+2.0*dy).xyz;
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vec3 c33 = texture(textureSrc, tc+2.0*dx+2.0*dy).xyz;
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// Get min/max samples
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vec3 min_sample = min4(c11, c21, c12, c22);
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vec3 max_sample = max4(c11, c21, c12, c22);
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color = mat4x3(c00, c10, c20, c30) * weights[0];
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color+= mat4x3(c01, c11, c21, c31) * weights[1];
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color+= mat4x3(c02, c12, c22, c32) * weights[2];
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color+= mat4x3(c03, c13, c23, c33) * weights[3];
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color = color / dot(weights * vec4(1.0), vec4(1.0));
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// Anti-ringing
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vec3 aux = color;
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color = clamp(color, min_sample, max_sample);
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color = mix(aux, color, $Anti_Ringing);
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// final sum and weight normalization
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return vec4(color, 1.0);
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}
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void main()
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{
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colorOut0 = JINC2_sharp(textureSrcResolution, passUV);
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}
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47
Filters/Jinc/rules.txt
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47
Filters/Jinc/rules.txt
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[Definition]
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name = Jinc windowed-jinc with anti-ringing
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titleIds =
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path = "Filters/Jinc"
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description = This is an approximation of Jinc. If B=1.0, it's a lanczos filter.
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version = 3
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[OutputShader] # need texels
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upscaleMagFilter = NearestNeighbor
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downscaleMagFilter = NearestNeighbor
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[Preset]
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name = Jinc
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$Window_Sinc = 0.5
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$SINC = 0.825
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$Anti_Ringing = 0.5
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[Preset]
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name = Lanczos
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$Window_Sinc = 0.5
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$SINC = 1.0
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$Anti_Ringing = 0.8
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[Preset]
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name = preset3 in nnedi3
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$Window_Sinc = 0.44
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$SINC = 0.82
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$Anti_Ringing = 0.5
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[Preset]
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name = preset4 in nedi
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$Window_Sinc = 0.42
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$SINC = 0.92
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$Anti_Ringing = 0.8
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[Preset]
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name = custom (edit in rules.txt)
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$Window_Sinc = 0.5
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$SINC = 0.825
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$Anti_Ringing = 0.8
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# $Window_Sinc == A; $SINC == B.
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# Increase A to get more blur. Decrease it to get a sharper picture.
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# B = 0.825 to get rid of dithering. Increase B to get a fine sharpness, though dithering returns.
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# $Anti_Ringing reduces overshoot.
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# Setting it to 1 prevents overshoot, which might cause pixels sticking together.
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