From 01ced0b7ce47d279789efb2dc70d1cd009ac56ad Mon Sep 17 00:00:00 2001
From: davidovski <david@davidovski.xyz>
Date: Sat, 9 Oct 2021 22:20:41 +0100
Subject: initial commit

---
 config/mpv/shaders/Anime4K_Darken_VeryFast.glsl | 218 ++++++++++++++++++++++++
 1 file changed, 218 insertions(+)
 create mode 100644 config/mpv/shaders/Anime4K_Darken_VeryFast.glsl

(limited to 'config/mpv/shaders/Anime4K_Darken_VeryFast.glsl')

diff --git a/config/mpv/shaders/Anime4K_Darken_VeryFast.glsl b/config/mpv/shaders/Anime4K_Darken_VeryFast.glsl
new file mode 100644
index 0000000..6fb88cd
--- /dev/null
+++ b/config/mpv/shaders/Anime4K_Darken_VeryFast.glsl
@@ -0,0 +1,218 @@
+// MIT License
+
+// Copyright (c) 2019-2021 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-v3.2-Darken-DoG-(HQ)-Luma
+//!HOOK MAIN
+//!BIND HOOKED
+//!SAVE LINELUMA
+//!WIDTH HOOKED.w 2 /
+//!HEIGHT HOOKED.h 2 /
+//!COMPONENTS 1
+
+float get_luma(vec4 rgba) {
+	return dot(vec4(0.299, 0.587, 0.114, 0.0), rgba);
+}
+
+vec4 hook() {
+    return vec4(get_luma(HOOKED_tex(HOOKED_pos)), 0.0, 0.0, 0.0);
+}
+
+//!DESC Anime4K-v3.2-Darken-DoG-(VeryFast)-Gaussian-X
+//!HOOK MAIN
+//!BIND HOOKED
+//!BIND LINELUMA
+//!SAVE LINEKERNEL
+//!WIDTH HOOKED.w 4 /
+//!HEIGHT HOOKED.h 4 /
+//!COMPONENTS 1
+
+#define SPATIAL_SIGMA (0.5 * float(HOOKED_size.y) / 1080.0) //Spatial window size, must be a positive real number.
+
+#define KERNELSIZE (max(int(ceil(SPATIAL_SIGMA * 2.0)), 1) * 2 + 1) //Kernel size, must be an positive odd integer.
+#define KERNELHALFSIZE (int(KERNELSIZE/2)) //Half of the kernel size without remainder. Must be equal to trunc(KERNELSIZE/2).
+#define KERNELLEN (KERNELSIZE * KERNELSIZE) //Total area of kernel. Must be equal to KERNELSIZE * KERNELSIZE.
+
+float gaussian(float x, float s, float m) {
+	float scaled = (x - m) / s;
+	return exp(-0.5 * scaled * scaled);
+}
+
+float comp_gaussian_x() {
+
+	float g = 0.0;
+	float gn = 0.0;
+	
+	for (int i=0; i<KERNELSIZE; i++) {
+		float di = float(i - KERNELHALFSIZE);
+		float gf = gaussian(di, SPATIAL_SIGMA, 0.0);
+		
+		g = g + LINELUMA_texOff(vec2(di, 0.0)).x * gf;
+		gn = gn + gf;
+		
+	}
+	
+	return g / gn;
+}
+
+vec4 hook() {
+    return vec4(comp_gaussian_x(), 0.0, 0.0, 0.0);
+}
+
+//!DESC Anime4K-v3.2-Darken-DoG-(VeryFast)-Gaussian-Y
+//!HOOK MAIN
+//!BIND HOOKED
+//!BIND LINELUMA
+//!BIND LINEKERNEL
+//!SAVE LINEKERNEL
+//!WIDTH HOOKED.w 4 /
+//!HEIGHT HOOKED.h 4 /
+//!COMPONENTS 1
+
+#define SPATIAL_SIGMA (0.25 * float(HOOKED_size.y) / 1080.0) //Spatial window size, must be a positive real number.
+
+#define KERNELSIZE (max(int(ceil(SPATIAL_SIGMA * 2.0)), 1) * 2 + 1) //Kernel size, must be an positive odd integer.
+#define KERNELHALFSIZE (int(KERNELSIZE/2)) //Half of the kernel size without remainder. Must be equal to trunc(KERNELSIZE/2).
+#define KERNELLEN (KERNELSIZE * KERNELSIZE) //Total area of kernel. Must be equal to KERNELSIZE * KERNELSIZE.
+
+float gaussian(float x, float s, float m) {
+	float scaled = (x - m) / s;
+	return exp(-0.5 * scaled * scaled);
+}
+
+float comp_gaussian_y() {
+
+	float g = 0.0;
+	float gn = 0.0;
+	
+	for (int i=0; i<KERNELSIZE; i++) {
+		float di = float(i - KERNELHALFSIZE);
+		float gf = gaussian(di, SPATIAL_SIGMA, 0.0);
+		
+		g = g + LINEKERNEL_texOff(vec2(0.0, di)).x * gf;
+		gn = gn + gf;
+		
+	}
+	
+	return g / gn;
+}
+
+vec4 hook() {
+    return vec4(min(LINELUMA_tex(HOOKED_pos).x - comp_gaussian_y(), 0.0), 0.0, 0.0, 0.0);
+}
+
+//!DESC Anime4K-v3.2-Darken-DoG-(VeryFast)-Gaussian-X
+//!HOOK MAIN
+//!BIND HOOKED
+//!BIND LINEKERNEL
+//!SAVE LINEKERNEL
+//!WIDTH HOOKED.w 4 /
+//!HEIGHT HOOKED.h 4 /
+//!COMPONENTS 1
+
+#define SPATIAL_SIGMA (0.25 * float(HOOKED_size.y) / 1080.0) //Spatial window size, must be a positive real number.
+
+#define KERNELSIZE (max(int(ceil(SPATIAL_SIGMA * 2.0)), 1) * 2 + 1) //Kernel size, must be an positive odd integer.
+#define KERNELHALFSIZE (int(KERNELSIZE/2)) //Half of the kernel size without remainder. Must be equal to trunc(KERNELSIZE/2).
+#define KERNELLEN (KERNELSIZE * KERNELSIZE) //Total area of kernel. Must be equal to KERNELSIZE * KERNELSIZE.
+
+float gaussian(float x, float s, float m) {
+	float scaled = (x - m) / s;
+	return exp(-0.5 * scaled * scaled);
+}
+
+float comp_gaussian_x() {
+
+	float g = 0.0;
+	float gn = 0.0;
+	
+	for (int i=0; i<KERNELSIZE; i++) {
+		float di = float(i - KERNELHALFSIZE);
+		float gf = gaussian(di, SPATIAL_SIGMA, 0.0);
+		
+		g = g + LINEKERNEL_texOff(vec2(di, 0.0)).x * gf;
+		gn = gn + gf;
+		
+	}
+	
+	return g / gn;
+}
+
+vec4 hook() {
+    return vec4(comp_gaussian_x(), 0.0, 0.0, 0.0);
+}
+
+//!DESC Anime4K-v3.2-Darken-DoG-(VeryFast)-Gaussian-Y
+//!HOOK MAIN
+//!BIND HOOKED
+//!BIND LINEKERNEL
+//!SAVE LINEKERNEL
+//!WIDTH HOOKED.w 4 /
+//!HEIGHT HOOKED.h 4 /
+//!COMPONENTS 1
+
+#define SPATIAL_SIGMA (0.25 * float(HOOKED_size.y) / 1080.0) //Spatial window size, must be a positive real number.
+
+#define KERNELSIZE (max(int(ceil(SPATIAL_SIGMA * 2.0)), 1) * 2 + 1) //Kernel size, must be an positive odd integer.
+#define KERNELHALFSIZE (int(KERNELSIZE/2)) //Half of the kernel size without remainder. Must be equal to trunc(KERNELSIZE/2).
+#define KERNELLEN (KERNELSIZE * KERNELSIZE) //Total area of kernel. Must be equal to KERNELSIZE * KERNELSIZE.
+
+float gaussian(float x, float s, float m) {
+	float scaled = (x - m) / s;
+	return exp(-0.5 * scaled * scaled);
+}
+
+float comp_gaussian_y() {
+
+	float g = 0.0;
+	float gn = 0.0;
+	
+	for (int i=0; i<KERNELSIZE; i++) {
+		float di = float(i - KERNELHALFSIZE);
+		float gf = gaussian(di, SPATIAL_SIGMA, 0.0);
+		
+		g = g + LINEKERNEL_texOff(vec2(0.0, di)).x * gf;
+		gn = gn + gf;
+		
+	}
+	
+	return g / gn;
+}
+
+vec4 hook() {
+    return vec4(comp_gaussian_y(), 0.0, 0.0, 0.0);
+}
+
+
+//!DESC Anime4K-v3.2-Darken-DoG-(VeryFast)-Upsample
+//!HOOK MAIN
+//!BIND HOOKED
+//!BIND LINEKERNEL
+
+#define STRENGTH 1.5 //Line darken proportional strength, higher is darker.
+
+vec4 hook() {
+	//This trick is only possible if the inverse Y->RGB matrix has 1 for every row... (which is the case for BT.709)
+	//Otherwise we would need to convert RGB to YUV, modify Y then convert back to RGB.
+    return HOOKED_tex(HOOKED_pos) + (LINEKERNEL_tex(HOOKED_pos).x * STRENGTH);
+}
+
-- 
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