223 lines
6.0 KiB
GLSL
223 lines
6.0 KiB
GLSL
// MIT License
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// Copyright (c) 2019-2021 bloc97
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// All rights reserved.
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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 all
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// 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 THE
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// SOFTWARE.
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//!DESC Anime4K-v3.2-Thin-(HQ)-Luma
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//!HOOK MAIN
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//!BIND HOOKED
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//!SAVE LINELUMA
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//!COMPONENTS 1
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float get_luma(vec4 rgba) {
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return dot(vec4(0.299, 0.587, 0.114, 0.0), rgba);
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}
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vec4 hook() {
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return vec4(get_luma(HOOKED_tex(HOOKED_pos)), 0.0, 0.0, 0.0);
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}
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//!DESC Anime4K-v3.2-Thin-(HQ)-Sobel-X
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//!HOOK MAIN
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//!BIND LINELUMA
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//!SAVE LINESOBEL
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//!COMPONENTS 2
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vec4 hook() {
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float l = LINELUMA_texOff(vec2(-1.0, 0.0)).x;
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float c = LINELUMA_tex(LINELUMA_pos).x;
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float r = LINELUMA_texOff(vec2(1.0, 0.0)).x;
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float xgrad = (-l + r);
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float ygrad = (l + c + c + r);
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return vec4(xgrad, ygrad, 0.0, 0.0);
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}
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//!DESC Anime4K-v3.2-Thin-(HQ)-Sobel-Y
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//!HOOK MAIN
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//!BIND LINESOBEL
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//!SAVE LINESOBEL
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//!COMPONENTS 1
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vec4 hook() {
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float tx = LINESOBEL_texOff(vec2(0.0, -1.0)).x;
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float cx = LINESOBEL_tex(LINESOBEL_pos).x;
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float bx = LINESOBEL_texOff(vec2(0.0, 1.0)).x;
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float ty = LINESOBEL_texOff(vec2(0.0, -1.0)).y;
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float by = LINESOBEL_texOff(vec2(0.0, 1.0)).y;
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float xgrad = (tx + cx + cx + bx) / 8.0;
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float ygrad = (-ty + by) / 8.0;
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//Computes the luminance's gradient
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float norm = sqrt(xgrad * xgrad + ygrad * ygrad);
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return vec4(pow(norm, 0.7));
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}
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//!DESC Anime4K-v3.2-Thin-(HQ)-Gaussian-X
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//!HOOK MAIN
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//!BIND HOOKED
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//!BIND LINESOBEL
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//!SAVE LINESOBEL
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//!COMPONENTS 1
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#define SPATIAL_SIGMA (2.0 * float(HOOKED_size.y) / 1080.0) //Spatial window size, must be a positive real number.
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#define KERNELSIZE (max(int(ceil(SPATIAL_SIGMA * 2.0)), 1) * 2 + 1) //Kernel size, must be an positive odd integer.
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#define KERNELHALFSIZE (int(KERNELSIZE/2)) //Half of the kernel size without remainder. Must be equal to trunc(KERNELSIZE/2).
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#define KERNELLEN (KERNELSIZE * KERNELSIZE) //Total area of kernel. Must be equal to KERNELSIZE * KERNELSIZE.
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float gaussian(float x, float s, float m) {
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float scaled = (x - m) / s;
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return exp(-0.5 * scaled * scaled);
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}
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float comp_gaussian_x() {
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float g = 0.0;
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float gn = 0.0;
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for (int i=0; i<KERNELSIZE; i++) {
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float di = float(i - KERNELHALFSIZE);
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float gf = gaussian(di, SPATIAL_SIGMA, 0.0);
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g = g + LINESOBEL_texOff(vec2(di, 0.0)).x * gf;
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gn = gn + gf;
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}
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return g / gn;
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}
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vec4 hook() {
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return vec4(comp_gaussian_x(), 0.0, 0.0, 0.0);
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}
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//!DESC Anime4K-v3.2-Thin-(HQ)-Gaussian-Y
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//!HOOK MAIN
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//!BIND HOOKED
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//!BIND LINESOBEL
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//!SAVE LINESOBEL
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//!COMPONENTS 1
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#define SPATIAL_SIGMA (2.0 * float(HOOKED_size.y) / 1080.0) //Spatial window size, must be a positive real number.
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#define KERNELSIZE (max(int(ceil(SPATIAL_SIGMA * 2.0)), 1) * 2 + 1) //Kernel size, must be an positive odd integer.
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#define KERNELHALFSIZE (int(KERNELSIZE/2)) //Half of the kernel size without remainder. Must be equal to trunc(KERNELSIZE/2).
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#define KERNELLEN (KERNELSIZE * KERNELSIZE) //Total area of kernel. Must be equal to KERNELSIZE * KERNELSIZE.
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float gaussian(float x, float s, float m) {
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float scaled = (x - m) / s;
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return exp(-0.5 * scaled * scaled);
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}
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float comp_gaussian_y() {
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float g = 0.0;
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float gn = 0.0;
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for (int i=0; i<KERNELSIZE; i++) {
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float di = float(i - KERNELHALFSIZE);
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float gf = gaussian(di, SPATIAL_SIGMA, 0.0);
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g = g + LINESOBEL_texOff(vec2(0.0, di)).x * gf;
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gn = gn + gf;
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}
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return g / gn;
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}
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vec4 hook() {
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return vec4(comp_gaussian_y(), 0.0, 0.0, 0.0);
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}
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//!DESC Anime4K-v3.2-Thin-(HQ)-Kernel-X
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//!HOOK MAIN
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//!BIND LINESOBEL
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//!SAVE LINESOBEL
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//!COMPONENTS 2
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vec4 hook() {
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float l = LINESOBEL_texOff(vec2(-1.0, 0.0)).x;
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float c = LINESOBEL_tex(LINESOBEL_pos).x;
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float r = LINESOBEL_texOff(vec2(1.0, 0.0)).x;
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float xgrad = (-l + r);
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float ygrad = (l + c + c + r);
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return vec4(xgrad, ygrad, 0.0, 0.0);
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}
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//!DESC Anime4K-v3.2-Thin-(HQ)-Kernel-Y
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//!HOOK MAIN
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//!BIND LINESOBEL
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//!SAVE LINESOBEL
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//!COMPONENTS 2
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vec4 hook() {
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float tx = LINESOBEL_texOff(vec2(0.0, -1.0)).x;
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float cx = LINESOBEL_tex(LINESOBEL_pos).x;
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float bx = LINESOBEL_texOff(vec2(0.0, 1.0)).x;
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float ty = LINESOBEL_texOff(vec2(0.0, -1.0)).y;
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float by = LINESOBEL_texOff(vec2(0.0, 1.0)).y;
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float xgrad = (tx + cx + cx + bx) / 8.0;
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float ygrad = (-ty + by) / 8.0;
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//Computes the luminance's gradient
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return vec4(xgrad, ygrad, 0.0, 0.0);
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}
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//!DESC Anime4K-v3.2-Thin-(HQ)-Warp
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//!HOOK MAIN
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//!BIND HOOKED
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//!BIND LINESOBEL
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#define STRENGTH 0.6 //Strength of warping for each iteration
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#define ITERATIONS 1 //Number of iterations for the forwards solver, decreasing strength and increasing iterations improves quality at the cost of speed.
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vec4 hook() {
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vec2 d = HOOKED_pt;
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float relstr = HOOKED_size.y / 1080.0 * STRENGTH;
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vec2 pos = HOOKED_pos;
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for (int i=0; i<ITERATIONS; i++) {
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vec2 dn = LINESOBEL_tex(pos).xy;
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vec2 dd = (dn / (length(dn) + 0.01)) * d * relstr; //Quasi-normalization for large vectors, avoids divide by zero
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pos -= dd;
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}
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return HOOKED_tex(pos);
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}
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