Adds ghostty config

.config/ghostty/config

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+# This is the configuration file for Ghostty.
+#
+# This template file has been automatically created at the following
+# path since Ghostty couldn't find any existing config files on your system:
+#
+#   /home/michel/.config/ghostty/config
+#
+# The template does not set any default options, since Ghostty ships
+# with sensible defaults for all options. Users should only need to set
+# options that they want to change from the default.
+#
+# Run `ghostty +show-config --default --docs` to view a list of
+# all available config options and their default values.
+#
+# Additionally, each config option is also explained in detail
+# on Ghostty's website, at https://ghostty.org/docs/config.
+
+# Config syntax crash course
+# ==========================
+# # The config file consists of simple key-value pairs,
+# # separated by equals signs.
+# font-family = Iosevka
+# window-padding-x = 2
+#
+# # Spacing around the equals sign does not matter.
+# # All of these are identical:
+# key=value
+# key= value
+# key =value
+# key = value
+#
+# # Any line beginning with a # is a comment. It's not possible to put
+# # a comment after a config option, since it would be interpreted as a
+# # part of the value. For example, this will have a value of "#123abc":
+# background = #123abc
+#
+# # Empty values are used to reset config keys to default.
+# key =
+#
+# # Some config options have unique syntaxes for their value,
+# # which is explained in the docs for that config option.
+# # Just for example:
+# resize-overlay-duration = 4s 200ms
+
+config-file = theming.conf
+

.config/ghostty/dsa-config

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+config-file = theming.conf
+custom-shader = ./shaders/optolith.glsl
+custom-shader-animation = always

.config/ghostty/shaders/optolith.glsl

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+/*
+
+Optolith Background
+-------------------
+This shader renders the background from the character creator program
+for The Black Eye 5 "Optolith". 
+
+The default values are to make the shader as close to the original as 
+possible. Thus I recommend using the fullscreen mode to view it, to
+reduce flickering.
+
+This is primarily designed to be used as ghostty shader, which
+requires the use of the iChannel0 channel. But feel free to use it 
+everywhere you like.
+
+If you have any idea of improving it, feel free to let me know or even
+create a fork. :)
+
+I tried to make it as simple as possible and to document everything.
+So even if you have no clue, whats going on, I hope my explainations 
+are good enough, so you know what you can change and how.
+
+License: (as always WTFPL)
+           DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                   Version 2, December 2004
+ 
+Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+Everyone is permitted to copy and distribute verbatim or modified
+copies of this license document, and changing it is allowed as long
+as the name is changed.
+ 
+           DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+  TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. You just DO WHAT THE FUCK YOU WANT TO.
+
+*/
+
+/* --- USER PARAMETERS --- */
+// These parameters you can change how ever you like.
+
+// BACKGROUND and FOREGROUND define the colors.
+#define BACKGROUND vec3(0.0666,0.0666,0.0666) // #111111
+// If you prefer the light mode:
+//#define BACKGROUND vec3(0.9411, 0.9411, 0.9411) // #F0F0F0
+#define FOREGROUND vec3(0.5137,0.4196,0.2431) // #836B3E
+// This value defines how visible the effect is.
+// This default is different to the original.
+// ORIGINAL VALUE: .15
+#define FOREGROUND_OPACITY .25
+
+
+
+// This defines how fast the animation is playing.
+// To decrease the speed, increase the divider. (and vice versa)
+// To stop the animation, just replace everything with 0 or 
+// any number in case you want a specific point in time. 
+// ORIGINAL VALUE: iTime/50.
+#define TIME iTime / 50.
+
+// MASK_DISTANCE define how far away from the center the line starts
+// (should be between 0 and 1)
+// ORIGINAL VALUE: 0.8
+#define MASK_DISTANCE 0.8
+// MASK_WIDTH defines how long the lines should be.
+// ORIGINAL VALUE: 0.05
+#define MASK_WIDTH 0.05
+
+// LINE_DISTANCE defines how many degrees should be between two lines.
+// For the best result, the number should be able to divide cleanly 
+// with 360.
+// ORIGINAL VALUE: 0.5
+#define LINE_DISTANCE 0.5
+// LINE_WIDTH defines how thick the line is. This is expressed in degrees.
+// This should not be higher than LINE_DISTANCE and should be sufficiantly 
+// large, otherwise the image begins to flicker. (as shown in the default)
+// But I mean... I can't stop you either way.
+// ORIGINAL VALUE: 0.05
+#define LINE_WIDTH 0.05
+
+/* --- SYSTEM PARAMETERS --- */
+// Changing these parameters may break something... So just don't
+
+// This is a constant to convert radians to degrees
+#define RAD2DEG 57.295779513
+
+/* --- CODE --- */
+
+vec2 rotateUV(vec2 uv) {
+    float sinUV = sin(TIME);
+    float cosUV = cos(TIME);
+    
+    mat2 rotationMatrix = mat2(cosUV, -sinUV, sinUV, cosUV);
+    return uv * rotationMatrix;
+}
+
+vec2 createEffectCoordnates(vec2 uv) {
+    float aspectRatio = iResolution.y / iResolution.x;
+    
+    // Move (0,0) to the center
+    uv -= 0.5;
+    // Scale it back up, so we work with a range of 0..1
+    // Also here we ensure, that the effect does not strech in an unwanted way
+    // This also results in the effect being larger than the screen, but thats
+    // intended.
+    uv *= vec2(2., aspectRatio * 2.);
+    // Finally, we rotate the UV so we get a nice rotation animation going.
+    return rotateUV(uv);
+}
+
+float getMask(vec2 coordnates) {
+    // This function returns a mask, that defines where the lines show up.
+    // This can be modified to have more unique masks, but that is left as a 
+    // exercise to the reader.
+
+    // Calculate the distance to the center
+    float uvLength = length(coordnates);
+    // The first step ensures that everything up to MASK_DISTANCE is (0) and 
+    // everything past it is (1)
+    // The other step does the exact oppisite, but with MASK_DISTANCE + MASK_WIDTH.
+    // When we multiply those, we get a mask, that only contains the overlapping masks. 
+    return step(uvLength * -1., -MASK_DISTANCE) * step(uvLength, MASK_DISTANCE + MASK_WIDTH);
+}
+
+float getLines(vec2 coordnates) {
+    // This returns a mask, that shows the lines on the effect.
+    
+    // This "atan" gives us a nice radial texture.
+    // More specifically we get a value in radians.
+    float lines = atan(coordnates.x, coordnates.y);
+    // Since radians are kinda hard to work with as parameters, I convert it to degrees.
+    float linesDegrees = lines * RAD2DEG;
+    // This gives us the repeating pattern.
+    float result = mod(linesDegrees, LINE_DISTANCE);
+    // Finally a step instruction, gives us the mask in the specific width we want. 
+    return step(result, LINE_WIDTH);
+}
+
+void mainImage( out vec4 fragColor, in vec2 fragCoord )
+{
+    // Normalized pixel coordinates (from 0 to 1)
+    vec2 uv = fragCoord/iResolution.xy;
+    
+    vec2 effectCoords = createEffectCoordnates(uv);
+    
+    float mask = getMask(effectCoords);
+    float lines = getLines(effectCoords);
+    
+    float result = lines * mask;
+    
+    vec3 col = mix(BACKGROUND, FOREGROUND, result * FOREGROUND_OPACITY);
+    
+    // Mixing iChannel0 into the mix. 
+    // If you wish to use the alpha channel, just replace the 1 with 
+    // "channel.a".
+    vec4 channel = texture(iChannel0, uv);
+    fragColor = vec4(mix(col, channel.rgb, length(channel.rgb)), 1);
+    
+}

.config/ghostty/theming.conf

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+theme = GruvboxDark
+
+font-family = "JetBrainsMono NFM Medium"
+font-family-bold = "JetBrainsMono NFM Bold"
+font-family-italic = "JetBrainsMono NFM Medium Italic"
+font-family-bold-italic = "JetBrainsMono NFM Bold Italic"
+
+
+
+font-size = 12.0