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//Anime4K v3.1 GLSL
// MIT License
// Copyright (c) 2019-2020 bloc97
// All rights reserved.
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//!DESC Anime4K-v3.1-ThinLines-Kernel(X)
//!HOOK NATIVE
//!BIND HOOKED
//!SAVE LUMAD
//!COMPONENTS 2
#define L_tex NATIVE_tex
vec4 hook() {
vec2 d = HOOKED_pt;
//[tl t tr]
//[ l c r]
//[bl b br]
float l = L_tex(HOOKED_pos + vec2(-d.x, 0)).x;
float c = L_tex(HOOKED_pos).x;
float r = L_tex(HOOKED_pos + vec2(d.x, 0)).x;
//Horizontal Gradient
//[-1 0 1]
//[-2 0 2]
//[-1 0 1]
float xgrad = (-l + r);
//Vertical Gradient
//[-1 -2 -1]
//[ 0 0 0]
//[ 1 2 1]
float ygrad = (l + c + c + r);
//Computes the luminance's gradient
return vec4(xgrad, ygrad, 0, 0);
}
//!DESC Anime4K-v3.1-ThinLines-Kernel(Y)
//!HOOK NATIVE
//!BIND HOOKED
//!BIND LUMAD
//!SAVE LUMAD
//!COMPONENTS 1
vec4 hook() {
vec2 d = HOOKED_pt;
//[tl t tr]
//[ l cc r]
//[bl b br]
float tx = LUMAD_tex(HOOKED_pos + vec2(0, -d.y)).x;
float cx = LUMAD_tex(HOOKED_pos).x;
float bx = LUMAD_tex(HOOKED_pos + vec2(0, d.y)).x;
float ty = LUMAD_tex(HOOKED_pos + vec2(0, -d.y)).y;
//float cy = LUMAD_tex(HOOKED_pos).y;
float by = LUMAD_tex(HOOKED_pos + vec2(0, d.y)).y;
//Horizontal Gradient
//[-1 0 1]
//[-2 0 2]
//[-1 0 1]
float xgrad = (tx + cx + cx + bx) / 8;
//Vertical Gradient
//[-1 -2 -1]
//[ 0 0 0]
//[ 1 2 1]
float ygrad = (-ty + by) / 8;
//Computes the luminance's gradient
float norm = sqrt(xgrad * xgrad + ygrad * ygrad);
return vec4(pow(norm, 0.7));
}
//!DESC Anime4K-v3.1-ThinLines-Kernel(X)
//!HOOK NATIVE
//!BIND HOOKED
//!BIND LUMAD
//!SAVE LUMADG
//!COMPONENTS 1
#define L_tex LUMAD_tex
#define SIGMA (HOOKED_size.y / 1080) * 2
#define KERNELSIZE (SIGMA * 2 + 1)
float gaussian(float x, float s, float m) {
return (1 / (s * sqrt(2 * 3.14159))) * exp(-0.5 * pow(abs(x - m) / s, 2.0));
}
float lumGaussian(vec2 pos, vec2 d) {
float g = (L_tex(pos).x) * gaussian(0, SIGMA, 0);
g = g + (L_tex(pos - d).x + L_tex(pos + d).x) * gaussian(1, SIGMA, 0);
for (int i=2; i<KERNELSIZE; i++) {
g = g + (L_tex(pos - (d * i)).x + L_tex(pos + (d * i)).x) * gaussian(i, SIGMA, 0);
}
return g;
}
vec4 hook() {
return vec4(lumGaussian(HOOKED_pos, vec2(HOOKED_pt.x, 0)));
}
//!DESC Anime4K-v3.1-ThinLines-Kernel(Y)
//!HOOK NATIVE
//!BIND HOOKED
//!BIND LUMAD
//!BIND LUMADG
//!SAVE LUMAD
//!COMPONENTS 3
#define L_tex LUMADG_tex
#define SIGMA (HOOKED_size.y / 1080) * 2
#define KERNELSIZE (SIGMA * 2 + 1)
float gaussian(float x, float s, float m) {
return (1 / (s * sqrt(2 * 3.14159))) * exp(-0.5 * pow(abs(x - m) / s, 2.0));
}
float lumGaussian(vec2 pos, vec2 d) {
float g = (L_tex(pos).x) * gaussian(0, SIGMA, 0);
g = g + (L_tex(pos - d).x + L_tex(pos + d).x) * gaussian(1, SIGMA, 0);
for (int i=2; i<KERNELSIZE; i++) {
g = g + (L_tex(pos - (d * i)).x + L_tex(pos + (d * i)).x) * gaussian(i, SIGMA, 0);
}
return g;
}
vec4 hook() {
float g = lumGaussian(HOOKED_pos, vec2(0, HOOKED_pt.y));
return vec4(0, 0, g, 0);
}
//!DESC Anime4K-v3.1-ThinLines-Kernel(X)
//!HOOK NATIVE
//!BIND HOOKED
//!BIND LUMAD
//!SAVE LUMAD2
//!COMPONENTS 2
vec4 hook() {
vec2 d = HOOKED_pt;
//[tl t tr]
//[ l c r]
//[bl b br]
float l = LUMAD_tex(HOOKED_pos + vec2(-d.x, 0)).z;
float c = LUMAD_tex(HOOKED_pos).z;
float r = LUMAD_tex(HOOKED_pos + vec2(d.x, 0)).z;
//Horizontal Gradient
//[-1 0 1]
//[-2 0 2]
//[-1 0 1]
float xgrad = (-l + r);
//Vertical Gradient
//[-1 -2 -1]
//[ 0 0 0]
//[ 1 2 1]
float ygrad = (l + c + c + r);
//Computes the luminance's gradient
return vec4(xgrad, ygrad, 0, 0);
}
//!DESC Anime4K-v3.1-ThinLines-Kernel(Y)
//!HOOK NATIVE
//!BIND HOOKED
//!BIND LUMAD2
//!SAVE LUMAD2
//!COMPONENTS 2
vec4 hook() {
vec2 d = HOOKED_pt;
//[tl t tr]
//[ l cc r]
//[bl b br]
float tx = LUMAD2_tex(HOOKED_pos + vec2(0, -d.y)).x;
float cx = LUMAD2_tex(HOOKED_pos).x;
float bx = LUMAD2_tex(HOOKED_pos + vec2(0, d.y)).x;
float ty = LUMAD2_tex(HOOKED_pos + vec2(0, -d.y)).y;
//float cy = LUMAD2_tex(HOOKED_pos).y;
float by = LUMAD2_tex(HOOKED_pos + vec2(0, d.y)).y;
//Horizontal Gradient
//[-1 0 1]
//[-2 0 2]
//[-1 0 1]
float xgrad = (tx + cx + cx + bx) / 8;
//Vertical Gradient
//[-1 -2 -1]
//[ 0 0 0]
//[ 1 2 1]
float ygrad = (-ty + by) / 8;
//Computes the luminance's gradient
return vec4(xgrad, ygrad, 0, 0);
}
//!DESC Anime4K-v3.1-ThinLines
//!HOOK NATIVE
//!BIND HOOKED
//!BIND LUMAD
//!BIND LUMAD2
#define STRENGTH 0.6 //Strength of warping for each iteration
#define ITERATIONS 1 //Number of iterations for the forwards solver, decreasing strength and increasing iterations improves quality at the cost of speed.
#define L_tex HOOKED_tex
vec4 hook() {
vec2 d = HOOKED_pt;
float relstr = HOOKED_size.y / 1080 * STRENGTH;
vec2 pos = HOOKED_pos;
for (int i=0; i<ITERATIONS; i++) {
vec2 dn = LUMAD2_tex(pos).xy;
vec2 dd = (dn / (length(dn) + 0.01)) * d * relstr; //Quasi-normalization for large vectors, avoids divide by zero
pos -= dd;
}
return HOOKED_tex(pos);
}
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