Add modified Fragmented project files

2025-10-10 22:05:07 +02:00 · 2025-10-10 22:05:07 +02:00 · 77ce93fb15
commit 77ce93fb15
parent f99f1fbc9b
57 changed files with 1696 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -0,0 +1,162 @@
+
+<h1 align=center>Pigment</h1>
+
+![screenshot](./screenshot.png)
+
+<p align=center>Color grading with code.</p>
+
+
+## Table of Contents
+
+- [Supported Platforms](#supported-platforms)
+- [Usage](#usage)
+- [Shaderlib](#shaderlib)
+- [Commandline interface](#commandline-interface)
+- [Known Issues](#known-issues)
+
+
+## Supported Platforms
+
+- Linux
+
+You can find the latest release ...
+
+- [here (remotebranch.eu)](https://remotebranch.eu/ChaoticByte/Pigment/releases/latest)
+
+
+## Usage
+
+With Pigment, you are processing images with GDShaders. This brings almost endless opportunities to create unique art.  
+If you want to learn GDShader, take a look at the [Godot docs](https://docs.godotengine.org/en/stable/tutorials/shaders/).
+
+**To get started, use the project template (see the Releases section of this repo) and open it in Godot.**
+
+The template includes many examples. You can use them as a starting-point to write your own stuff.
+
+Besides the regular GDShader stuff, Pigment has so-called directives. Those allow to further control the behaviour of the application. **The most important directive is `//!load` to load an image.**
+
+
+### Load TEXTURE using the `//!load` directive
+
+```glsl
+//!load <filepath>
+```
+
+The main image file will be read and available as the sampler2D `TEXTURE`.
+
+
+#### Load additional images
+
+```glsl
+//!load+ <name> <filepath>
+
+uniform sampler2D <name>;
+```
+
+Have a look at the `place_texture.gdshader` example.
+
+
+### Have multiple steps with `//!steps n`
+
+You can apply your shaderfile multiple times. At every additional step, `TEXTURE` is the result of the previous step. This can be used to chain effects that cannot be easily chained otherwise.
+
+To query the current step index, a `STEP` uniform is automatically injected. If `steps` is set to `0`, your shader won't be applied at all.
+
+Example:
+
+```glsl
+//!load ...
+//!steps 5
+
+uniform int STEP;
+uniform int STEPS;
+
+void fragment() {
+  if (STEP == 0) {
+	  ...
+  } else if (STEP == 1) {
+	  ...
+  } else if (STEP == STEPS-1) {
+    ...
+  }
+}
+```
+
+
+## Shaderlib
+
+This repo comes with a (still small) shader library including pre-written functions and more.  
+Have a look at the `shaderlib` folder.
+
+Here is an example:
+
+```glsl
+shader_type canvas_item;
+
+#include "./shaderlib/oklab.gdshaderinc"
+
+//!load ./images/swamp.jpg
+
+void fragment() {
+	vec4 oklab = rgb2oklab(COLOR);
+	vec4 oklch = oklab2oklch(oklab);
+	oklch.z -= 2.0;
+	COLOR = oklab2rgb(oklch2oklab(oklch));
+}
+```
+
+
+## Commandline interface
+
+You can run Pigment from the commandline or scripts.
+
+> Note: Headless mode is not supported. Using the commandline interface still opens a window.
+
+
+### Usage
+
+```
+~ Pigment CLI ~
+-================-
+
+Usage:
+
+./Pigment <command> <args...>
+
+Commands:
+
+ help
+
+  | Shows this help text.
+
+ apply --shader PATH --input PATH --output PATH
+
+  | Applies a shader file.
+
+    --shader PATH  The path to the shader
+    --input  PATH  The path to the input image.
+                   Passing a folder activates batch mode.
+    --output PATH  Where to write the resulting image to.
+                   In batch mode, this must be a folder.
+
+```
+
+
+### Batch Mode
+
+Since version v8.0, you can pass a directory to `--input` and `--output`. This will process all images in the input directory and write the output to the output directory.
+
+> Note: You *can* use this feature for video frames, but it will take a loooong time.
+
+
+#### Examples
+
+```
+./Pigment apply --shader ./examples/oklab.gdshader --input ~/Pictures/test.png --output ./output.png
+```
+
+
+## Known Issues
+
+- screen scaling is unsupported; Using screen scaling could lead to an either blurry UI, or no scaling at all -> see #45
+- commandline interface: `--headless` is not supported
--- a/build-template/Containerfile
+++ b/build-template/Containerfile
@ -0,0 +1,21 @@
+
+MAINTAINER ChaoticByte
+
+# Using Ubuntu 20.04
+FROM docker.io/ubuntu:focal AS os-base
+
+# https://docs.godotengine.org/en/stable/contributing/development/compiling/compiling_for_linuxbsd.html
+
+RUN apt-get update
+RUN DEBIAN_FRONTEND=noninteractive apt-get install -yq python3-pip git build-essential pkg-config libx11-dev libxcursor-dev libxinerama-dev libgl1-mesa-dev libglu1-mesa-dev libasound2-dev libpulse-dev libudev-dev libxi-dev libxrandr-dev libwayland-dev
+RUN pip3 install --system scons
+
+FROM os-base AS clone-src
+
+RUN git clone https://github.com/godotengine/godot.git -b 4.5-stable /godot-src
+
+FROM clone-src
+
+WORKDIR /godot-src
+ENTRYPOINT scons platform=linuxbsd target=template_release lto=full optimize=size disable_3d=yes module_text_server_adv_enabled=no module_text_server_fb_enabled=yes module_basis_universal_enabled=no module_csg_enabled=no module_enet_enabled=no module_gridmap_enabled=no module_jsonrpc_enabled=no module_mbedtls_enabled=no module_meshoptimizer_enabled=no module_minimp3_enabled=no module_mobile_vr_enabled=no module_msdfgen_enabled=no module_multiplayer_enabled=no module_navigation_enabled=no module_ogg_enabled=no module_openxr_enabled=no module_raycast_enabled=no module_squish_enabled=no module_theora_enabled=no module_upnp_enabled=no module_vhacd_enabled=no module_vorbis_enabled=no module_webrtc_enabled=no module_websocket_enabled=no module_webxr_enabled=no arch=x86_64 && strip bin/godot.linuxbsd.template_release.x86_64
+
--- a/build-template/build.sh
+++ b/build-template/build.sh
@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+set -e
+
+function log {
+    echo -e "\033[1;36m***** $@\033[0m"
+}
+
+log
+log "Pigment - Godot Build Template Builder"
+log
+
+cd $(dirname $0)
+log Switched to $(pwd)
+
+tmpsuffix=$(date +%s%N)
+image_name=pigment-godot-template-builder
+container_name=${image_name}-${tmpsuffix}
+output_file=godot.linuxbsd.template_release.x86_64
+
+log Building image ${image_name} ...
+buildah build -t ${image_name}
+log Building godot build template with container ${container_name} ...
+podman run --name ${container_name} localhost/${image_name}:latest
+log Copying ${output_file} from container to $(realpath ./${output_file})
+podman cp ${container_name}:/godot-src/bin/${output_file} ./${output_file}
+log Removing container ${container_name}
+podman container rm ${container_name}
+log Done :D
+
--- a/dist.sh
+++ b/dist.sh
@ -0,0 +1,30 @@
+set -e
+
+function log {
+    echo -e "\033[1;36m***** $@ *****\033[0m"
+}
+
+mkdir -p dist
+
+log Building application
+
+VERSION="$(godot --headless --no-header -s tools/get_version.gd)"
+
+godot --headless --export-release "Linux/X11" "dist/Pigment-${VERSION}.x86_64"
+
+log Packing shaderlib
+
+ZIP_PATH_SHADERLIB=$(realpath "dist/Pigment-${VERSION}_shaderlib.zip")
+
+zip -r "${ZIP_PATH_SHADERLIB}" shaderlib/
+
+log Packing project template
+
+ZIP_PATH_PROJECT_TEMPLATE=$(realpath "dist/Pigment-${VERSION}_project_template.zip")
+
+rm -f "${ZIP_PATH_PROJECT_TEMPLATE}"
+(
+    cd examples/
+    mv project.godot_ project.godot && trap "mv project.godot project.godot_" EXIT
+    zip -r "${ZIP_PATH_PROJECT_TEMPLATE}" *
+)
--- a/examples/0_empty.tscn
+++ b/examples/0_empty.tscn
@ -0,0 +1,3 @@
+[gd_scene format=3 uid="uid://db2rhq8rwv5wo"]
+
+[node name="Node" type="Node"]
--- a/examples/greyscale.gdshader
+++ b/examples/greyscale.gdshader
@ -0,0 +1,8 @@
+shader_type canvas_item;
+
+void fragment() {
+	float v = (COLOR.r + COLOR.g + COLOR.b) / 3.0;
+	COLOR.r = v;
+	COLOR.g = v;
+	COLOR.b = v;
+}
--- a/examples/greyscale.gdshader.uid
+++ b/examples/greyscale.gdshader.uid
@ -0,0 +1 @@
+uid://dvarqolt6es27
--- a/examples/hsv.gdshader
+++ b/examples/hsv.gdshader
@ -0,0 +1,10 @@
+shader_type canvas_item;
+
+#include "./shaderlib/hsv.gdshaderinc"
+
+void fragment() {
+	vec4 hsv = rgb2hsv(COLOR);
+	hsv.xyz += vec3(0.65, .42-(hsv.y*.3), -.125);
+	hsv.xyz *= vec3(1.0, 1.0, 1.25);
+	COLOR = hsv2rgb(hsv);
+}
--- a/examples/hsv.gdshader.uid
+++ b/examples/hsv.gdshader.uid
@ -0,0 +1 @@
+uid://gd23hu7ro148
--- a/examples/images/CREDITS.md
+++ b/examples/images/CREDITS.md
@ -0,0 +1,5 @@
+
+# Example Images
+
+- swamp.jpg by [clfr21 on Pixabay](https://pixabay.com/de/users/clfr21-6530007/)
+- mountain.jpg by [Phghvvcftyyufj on Pixabay](https://pixabay.com/users/phghvvcftyyufj-12646982)
--- a/examples/images/mountain.jpg
+++ b/examples/images/mountain.jpg
--- a/examples/images/mountain.jpg.import
+++ b/examples/images/mountain.jpg.import
@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://ben72llmopgaj"
+path="res://.godot/imported/mountain.jpg-c1b7de1e6557b826bc6f9324027e11af.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://examples/images/mountain.jpg"
+dest_files=["res://.godot/imported/mountain.jpg-c1b7de1e6557b826bc6f9324027e11af.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
--- a/examples/images/swamp.jpg
+++ b/examples/images/swamp.jpg
--- a/examples/images/swamp.jpg.import
+++ b/examples/images/swamp.jpg.import
@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://ckjb0agn5btv7"
+path="res://.godot/imported/swamp.jpg-1dfdcd52a5ef03d42a82a7f06acefa98.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://examples/images/swamp.jpg"
+dest_files=["res://.godot/imported/swamp.jpg-1dfdcd52a5ef03d42a82a7f06acefa98.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
--- a/examples/lowpass.gdshader
+++ b/examples/lowpass.gdshader
@ -0,0 +1,9 @@
+shader_type canvas_item;
+
+const float threshold = 0.6;
+
+void fragment() {
+	vec4 tex = texture(TEXTURE , UV);
+	COLOR.rgb = min(tex.rgb, vec3(threshold));
+	COLOR.a = tex.a;
+}
--- a/examples/lowpass.gdshader.uid
+++ b/examples/lowpass.gdshader.uid
@ -0,0 +1 @@
+uid://dn02xsjm1kok8
--- a/examples/oklab.gdshader
+++ b/examples/oklab.gdshader
@ -0,0 +1,10 @@
+shader_type canvas_item;
+
+#include "./shaderlib/oklab.gdshaderinc"
+
+void fragment() {
+	vec4 oklab = rgb2oklab(COLOR);
+	vec4 oklch = oklab2oklch(oklab);
+	oklch.z -= 2.0;
+	COLOR = oklab2rgb(oklch2oklab(oklch));
+}
--- a/examples/oklab.gdshader.uid
+++ b/examples/oklab.gdshader.uid
@ -0,0 +1 @@
+uid://cu37y8lc0x83
--- a/examples/project.godot_
+++ b/examples/project.godot_
@ -0,0 +1,15 @@
+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
+config_version=5
+
+[application]
+
+config/name="Pigment Project"
+run/main_scene="res://0_empty.tscn"
+config/features=PackedStringArray("4.4", "Forward Plus")
--- a/examples/shaderlib
+++ b/examples/shaderlib
@ -0,0 +1 @@
+../shaderlib
--- a/export_presets.cfg
+++ b/export_presets.cfg
@ -0,0 +1,45 @@
+[preset.0]
+
+name="Linux/X11"
+platform="Linux"
+runnable=true
+advanced_options=false
+dedicated_server=false
+custom_features=""
+export_filter="all_resources"
+include_filter=""
+exclude_filter="screenshot.png, examples/*, shaderlib/*, tools/*, build-template/*"
+export_path="dist/Pigment.x86_64"
+patches=PackedStringArray()
+encryption_include_filters=""
+encryption_exclude_filters=""
+seed=0
+encrypt_pck=false
+encrypt_directory=false
+script_export_mode=2
+
+[preset.0.options]
+
+custom_template/debug=""
+custom_template/release="./build-template/godot.linuxbsd.template_release.x86_64"
+debug/export_console_wrapper=1
+binary_format/embed_pck=true
+texture_format/s3tc_bptc=true
+texture_format/etc2_astc=false
+binary_format/architecture="x86_64"
+ssh_remote_deploy/enabled=false
+ssh_remote_deploy/host="user@host_ip"
+ssh_remote_deploy/port="22"
+ssh_remote_deploy/extra_args_ssh=""
+ssh_remote_deploy/extra_args_scp=""
+ssh_remote_deploy/run_script="#!/usr/bin/env bash
+export DISPLAY=:0
+unzip -o -q \"{temp_dir}/{archive_name}\" -d \"{temp_dir}\"
+\"{temp_dir}/{exe_name}\" {cmd_args}"
+ssh_remote_deploy/cleanup_script="#!/usr/bin/env bash
+kill $(pgrep -x -f \"{temp_dir}/{exe_name} {cmd_args}\")
+rm -rf \"{temp_dir}\""
+texture_format/bptc=true
+texture_format/s3tc=true
+texture_format/etc=false
+texture_format/etc2=false
--- a/project.godot
+++ b/project.godot
@ -0,0 +1,72 @@
+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
+config_version=5
+
+[application]
+
+config/name="Pigment"
+config/version="v1.0"
+run/main_scene="res://src/scenes/main.tscn"
+config/features=PackedStringArray("4.5", "Mobile")
+config/icon="res://src/assets/icon.png"
+
+[autoload]
+
+Filesystem="*res://src/Filesystem.gd"
+
+[display]
+
+window/size/viewport_width=640
+window/size/viewport_height=672
+window/energy_saving/keep_screen_on=false
+window/subwindows/embed_subwindows=false
+
+[editor_plugins]
+
+enabled=PackedStringArray()
+
+[input]
+
+zoom_out={
+"deadzone": 0.5,
+"events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":16,"position":Vector2(244, 15),"global_position":Vector2(248, 56),"factor":1.0,"button_index":5,"canceled":false,"pressed":true,"double_click":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":true,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":45,"physical_keycode":0,"key_label":0,"unicode":45,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":true,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194435,"key_label":0,"unicode":45,"location":0,"echo":false,"script":null)
+]
+}
+zoom_in={
+"deadzone": 0.5,
+"events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":8,"position":Vector2(270, 19),"global_position":Vector2(274, 60),"factor":1.0,"button_index":4,"canceled":false,"pressed":true,"double_click":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":true,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":43,"physical_keycode":0,"key_label":0,"unicode":43,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":true,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194437,"key_label":0,"unicode":43,"location":0,"echo":false,"script":null)
+]
+}
+drag={
+"deadzone": 0.5,
+"events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":1,"position":Vector2(183, 23),"global_position":Vector2(187, 64),"factor":1.0,"button_index":1,"canceled":false,"pressed":true,"double_click":false,"script":null)
+]
+}
+apply_shader={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":4194336,"physical_keycode":0,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
+save_shader={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":true,"meta_pressed":false,"pressed":false,"keycode":83,"physical_keycode":0,"key_label":0,"unicode":115,"location":0,"echo":false,"script":null)
+]
+}
+
+[rendering]
+
+renderer/rendering_method="mobile"
+textures/vram_compression/import_etc2_astc=true
+textures/lossless_compression/force_png=true
+shader_compiler/shader_cache/enabled=false
+environment/defaults/default_clear_color=Color(0.501961, 0.501961, 0.501961, 1)
--- a/screenshot.png
+++ b/screenshot.png
--- a/shaderlib/common.gdshaderinc
+++ b/shaderlib/common.gdshaderinc
@ -0,0 +1,5 @@
+
+// inefficient cuberoot function
+float cbrt(float x) {
+	return pow(x, 1.0/3.0);
+}
--- a/shaderlib/common.gdshaderinc.uid
+++ b/shaderlib/common.gdshaderinc.uid
@ -0,0 +1 @@
+uid://764b6ekchgb8
--- a/shaderlib/hsv.gdshaderinc
+++ b/shaderlib/hsv.gdshaderinc
@ -0,0 +1,27 @@
+
+/*
+	rgb2hsv and hsv2rgb functions adapted
+	from https://godotshaders.com/shader/hsv-adjustment/
+	original code by https://godotshaders.com/author/al1-ce/
+
+	Color space conversion functions always work with vec4.
+	The fourth value is always alpha.
+*/
+
+// Convert RGB to HSV (hue, saturation, brightness)
+vec4 rgb2hsv(vec4 c) {
+	vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
+	vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
+	vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
+	float d = q.x - min(q.w, q.y);
+	float e = 1.0e-10;
+	return vec4(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x, c.a);
+}
+
+// Convert HSV back to RGB (red, green, blue)
+vec4 hsv2rgb(vec4 c) {
+	vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
+	vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
+	vec3 rgb =  c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
+	return vec4(rgb.r, rgb.g, rgb.b, c.a);
+}
--- a/shaderlib/hsv.gdshaderinc.uid
+++ b/shaderlib/hsv.gdshaderinc.uid
@ -0,0 +1 @@
+uid://bbr3tq6mp5qa2
--- a/shaderlib/oklab.gdshaderinc
+++ b/shaderlib/oklab.gdshaderinc
@ -0,0 +1,70 @@
+
+/*
+	OkLab and OkLCh
+	For more details on oklab, see
+		- https://bottosson.github.io/posts/oklab/
+		- https://en.wikipedia.org/wiki/Oklab_color_space
+
+	Color space conversion functions always work with vec4.
+	The fourth value is always alpha.
+*/
+
+#include "./common.gdshaderinc"
+
+vec4 rgb2oklab(vec4 c) {
+	// oklab.x and .y (a and b) should range from -0.5 to 0.5
+
+	float l = 0.4122214708f * c.r + 0.5363325363f * c.g + 0.0514459929f * c.b;
+	float m = 0.2119034982f * c.r + 0.6806995451f * c.g + 0.1073969566f * c.b;
+	float s = 0.0883024619f * c.r + 0.2817188376f * c.g + 0.6299787005f * c.b;
+
+	float l_ = cbrt(l);
+	float m_ = cbrt(m);
+	float s_ = cbrt(s);
+
+	return vec4(
+		0.2104542553f*l_ + 0.7936177850f*m_ - 0.0040720468f*s_,
+		1.9779984951f*l_ - 2.4285922050f*m_ + 0.4505937099f*s_,
+		0.0259040371f*l_ + 0.7827717662f*m_ - 0.8086757660f*s_,
+		c.a
+	);
+}
+
+vec4 oklab2rgb(vec4 c) {
+	// oklab.x and .y (a and b) should range from -0.5 to 0.5
+
+	float l_ = c.x + 0.3963377774f * c.y + 0.2158037573f * c.z;
+	float m_ = c.x - 0.1055613458f * c.y - 0.0638541728f * c.z;
+	float s_ = c.x - 0.0894841775f * c.y - 1.2914855480f * c.z;
+
+	float l = l_*l_*l_;
+	float m = m_*m_*m_;
+	float s = s_*s_*s_;
+
+	return vec4(
+		+4.0767416621f * l - 3.3077115913f * m + 0.2309699292f * s,
+		-1.2684380046f * l + 2.6097574011f * m - 0.3413193965f * s,
+		-0.0041960863f * l - 0.7034186147f * m + 1.7076147010f * s,
+		c.a
+	);
+}
+
+vec4 oklab2oklch(vec4 c) {
+	// oklch.z (hue) ranges from -3.6 to 3.6
+	return vec4(
+		c.x,
+		sqrt((c.y * c.y) + (c.z * c.z)),
+		atan(c.z, c.y),
+		c.a
+	);
+}
+
+vec4 oklch2oklab(vec4 c) {
+	// oklch.z (hue) ranges from -3.6 to 3.6
+	return vec4(
+		c.x,
+		c.y * cos(c.z),
+		c.y * sin(c.z),
+		c.a
+	);
+}
--- a/shaderlib/oklab.gdshaderinc.uid
+++ b/shaderlib/oklab.gdshaderinc.uid
@ -0,0 +1 @@
+uid://ckw4nfslk4m6l
--- a/src/Camera.gd
+++ b/src/Camera.gd
@ -0,0 +1,50 @@
+extends Camera2D
+
+@onready var image_viewport_display = %ImageViewportDisplay
+
+var drag = false
+
+func _input(event):
+	if event.is_action_pressed("zoom_out"):
+		zoom_out()
+	elif event.is_action_pressed("zoom_in"):
+		zoom_in()
+	if event.is_action_pressed("drag"):
+		self.drag = true
+	elif event.is_action_released("drag"):
+		self.drag = false
+	if self.drag && event is InputEventMouseMotion:
+		self.global_position -= event.relative / self.zoom
+
+var old_zoom = self.zoom
+
+func _process(_delta: float) -> void:
+	if self.zoom != old_zoom:
+		image_viewport_display.update_zoom_texture_filter(self.zoom)
+		image_viewport_display.material.set_shader_parameter("zoom_level", self.zoom)
+		old_zoom = self.zoom
+
+func fit_image():
+	if Filesystem.original_image != null:
+		var image_size = Filesystem.original_image.get_size()
+		var viewport_size = get_viewport_rect().size
+		var zoomf = 1.0
+		if viewport_size.x / image_size.x * image_size.y > viewport_size.y:
+			zoomf = viewport_size.y / image_size.y / 1.25
+		else:
+			zoomf = viewport_size.x / image_size.x / 1.2 
+		self.zoom = Vector2(zoomf, zoomf)
+		self.global_position = Vector2(0, 0)
+
+func zoom_in():
+	var old_mouse_pos = get_global_mouse_position()
+	self.zoom *= 1.2
+	self.global_position += old_mouse_pos - get_global_mouse_position()
+
+func zoom_out():
+	var old_mouse_pos = get_global_mouse_position()
+	self.zoom *= 1/1.2
+	self.global_position += old_mouse_pos - get_global_mouse_position()
+
+func _on_fit_image_button_pressed():
+	fit_image()
--- a/src/Camera.gd.uid
+++ b/src/Camera.gd.uid
@ -0,0 +1 @@
+uid://b6r8rigubdctk
--- a/src/Filesystem.gd
+++ b/src/Filesystem.gd
@ -0,0 +1,52 @@
+extends Node
+
+var cwd = "."
+
+var shader_path = "":
+	get():
+		return shader_path
+	set(v):
+		shader_path = v
+		if "/" in v: # update current working directory
+			cwd = v.substr(0, v.rfind("/"))
+
+var shader: Shader:
+	get():
+		if shader_path == "":
+			return null
+		print("Load ", shader_path)
+		return load(shader_path)
+
+var image_path = ""
+
+var original_image: ImageTexture
+var result: Image
+
+var last_image_savepath = ""
+var last_original_image_path = ""
+
+func get_absolute_path(p: String) -> String:
+	# this only works on Linux!
+	if !p.begins_with("/"):
+		return self.cwd + "/" + p.lstrip("./")
+	return p
+
+func load_image() -> String: # returns an error message
+	print("Load ", image_path)
+	var img = Image.new()
+	var err = img.load(image_path)
+	if err == OK:
+		original_image = ImageTexture.create_from_image(img)
+		if self.last_image_savepath == "" or image_path != self.last_original_image_path:
+			self.last_image_savepath = image_path
+		self.last_original_image_path = image_path
+		return ""
+	return error_string(err) + " " + image_path
+
+func save_result(path: String):
+	print("Export ", path)
+	var err = self.result.save_png(path)
+	if err != OK:
+		print("An error occured!")
+	else:
+		self.last_image_savepath = path
--- a/src/Filesystem.gd.uid
+++ b/src/Filesystem.gd.uid
@ -0,0 +1 @@
+uid://rlb041ygdwol
--- a/src/ImageCompositor.gd
+++ b/src/ImageCompositor.gd
@ -0,0 +1,90 @@
+class_name ImageCompositor extends SubViewport
+
+var image_sprite: Sprite2D
+
+func _init() -> void:
+	# Overwrite some variables
+	self.render_target_update_mode = SubViewport.UPDATE_ALWAYS
+	self.disable_3d = true
+	self.transparent_bg = true
+	self.canvas_item_default_texture_filter = Viewport.DEFAULT_CANVAS_ITEM_TEXTURE_FILTER_NEAREST
+	self.image_sprite = Sprite2D.new()
+
+@onready var camera = %Camera
+@onready var image_viewport_display = %ImageViewportDisplay
+
+func _ready() -> void:
+	# Add image sprite as child to be rendered
+	self.add_child(image_sprite)
+
+var _fragment_function_regex: RegEx = RegEx.create_from_string(r'\s*void\s+fragment\s*\(\s*\)\s*{\s*')
+
+func validate_shader_compilation(shader: Shader) -> bool:
+	# Inject code to validate shader compilation
+	var shader_code = shader.code;
+	# -> get position of fragment shader
+	var fragment_function_match = _fragment_function_regex.search(shader.code)
+	if fragment_function_match == null:
+		return false
+	# -> inject uniform
+	var uniform_name = "shader_compilation_validate_" + str(randi_range(999999999, 100000000))
+	var uniform_code_line = "\nuniform bool " + uniform_name + ";\n"
+	shader_code = shader_code.insert(fragment_function_match.get_start(), uniform_code_line)
+	# -> inject variable access to prevent that the uniform gets optimized away
+	shader_code = shader_code.insert(fragment_function_match.get_end() + len(uniform_code_line), "\n" + uniform_name + ";\n")
+	# apply shader code
+	shader.code = shader_code
+	# test if uniform list is empty -> if it is empty, the shader compilation failed
+	return len(shader.get_shader_uniform_list()) > 0
+
+func shader_has_uniform(shader: Shader, var_name: String, type: int) -> bool:
+	for u in shader.get_shader_uniform_list():
+		if u["name"] == var_name && u["type"] == type:
+			return true
+	return false
+
+func set_vsync(enabled: bool):
+	if enabled:
+		DisplayServer.window_set_vsync_mode(DisplayServer.VSYNC_ENABLED)
+	else:
+		DisplayServer.window_set_vsync_mode(DisplayServer.VSYNC_DISABLED)
+
+func update() -> Array: # returns error messages (strings)
+	if Filesystem.image_path == "":
+		return ["No image loaded!"]
+	var shader = Filesystem.shader # read from disk
+	if shader == null:
+		return ["No shader opened!"]
+	# validate shader
+	if not validate_shader_compilation(shader):
+		return ["Shader compilation failed!"]
+	var errors = []
+	# load texture
+	var fit_image = Filesystem.image_path != Filesystem.last_original_image_path
+	var err = Filesystem.load_image()
+	if err != "":
+		errors.append(err)
+		image_viewport_display.hide()
+		return errors
+	# apply texture
+	image_sprite.texture = Filesystem.original_image
+	image_sprite.offset = Filesystem.original_image.get_size() / 2
+	self.size = Filesystem.original_image.get_size()
+	# show the image viewport & fit the image
+	if fit_image: camera.fit_image()
+	image_viewport_display.show()
+	# create shader material
+	var mat = ShaderMaterial.new()
+	mat.shader = shader
+	# assign material
+	image_sprite.material = mat
+	# iterate n times
+	set_vsync(false) # speed up processing
+	# Get viewport texture
+	await RenderingServer.frame_post_draw # wait for next frame to get drawn
+	Filesystem.result = get_texture().get_image()
+	image_sprite.texture = ImageTexture.create_from_image(Filesystem.result)
+	set_vsync(true) # reenable vsync
+	image_sprite.material = null
+	# done
+	return errors
--- a/src/ImageCompositor.gd.uid
+++ b/src/ImageCompositor.gd.uid
@ -0,0 +1 @@
+uid://d106170kuigl3
--- a/src/ImageViewportDisplay.gd
+++ b/src/ImageViewportDisplay.gd
@ -0,0 +1,10 @@
+extends Sprite2D
+
+func _ready() -> void:
+	hide()
+
+func update_zoom_texture_filter(zoom: Vector2):
+	if zoom.x >= 1.5:
+		texture_filter = TEXTURE_FILTER_NEAREST_WITH_MIPMAPS
+	else:
+		texture_filter = TEXTURE_FILTER_LINEAR
--- a/src/ImageViewportDisplay.gd.uid
+++ b/src/ImageViewportDisplay.gd.uid
@ -0,0 +1 @@
+uid://ctc4lhbdsoq7u
--- a/src/Main.gd
+++ b/src/Main.gd
@ -0,0 +1,121 @@
+extends Node
+
+const BATCH_MODE_SUPPORTED_EXTS = [
+	".bmp", ".dds", ".exr", ".hdr", ".jpeg", ".jpg", ".ktx", ".png", ".svg", ".webp"
+]
+
+@onready var app_name = ProjectSettings.get_setting("application/config/name")
+
+func show_help():
+	print(
+		"Usage:\n\n",
+		"./Pigment <command> <args...>\n\n",
+		"Commands:\n\n",
+		" help\n\n",
+		"  | Shows this help text.\n\n",
+		" apply --shader PATH [--load-image PATH]\n\n",
+		"  | Applies a shader file.\n\n",
+		"    --shader PATH  The path to the shader\n",
+		"    --input  PATH  The path to the image.\n",
+		"                   Passing a folder activates batch mode.\n",
+		"    --output PATH  Where to write the resulting image to.\n",
+		"                   In batch mode, this must be a folder.\n")
+
+func parse_custom_cmdline(args: PackedStringArray):
+	var kwargs: Dictionary = {"--shader": null, "--output": null, "--input": null}
+	var args_len = args.size()
+	var i = 0
+	while i < args_len:
+		var a = args[i]
+		if a in kwargs && args_len > i+1:
+			i += 1
+			kwargs[a] = args[i]
+		i += 1
+	return kwargs
+
+func cli_handle_errors(errors: Array) -> int:
+	# returns number of errors
+	var n_errors = errors.size()
+	if n_errors > 0:
+		print("One or more errors occurred.")
+		for e in errors:
+			printerr(e)
+	return n_errors
+
+func cli(args: PackedStringArray):
+	print(
+		"~ Pigment CLI ~\n",
+		"-=============-\n")
+	if "help" in args:
+		show_help()
+		get_tree().quit(1)
+		return
+	var kwargs: Dictionary = parse_custom_cmdline(args)
+	if kwargs["--shader"] == null or kwargs["--output"] == null:
+		show_help()
+		get_tree().quit(1)
+		return
+	var batch_mode = false
+	var load_image_dir: DirAccess
+	if kwargs["--input"] != null:
+		load_image_dir = DirAccess.open(kwargs["--input"])
+		if load_image_dir != null:
+			# batch mode
+			if DirAccess.open(kwargs["--output"]) == null:
+				printerr("If --input is a directory, --output has to be one too.\n")
+				show_help()
+				get_tree().quit(1)
+				return
+			else:
+				batch_mode = true
+	#
+	Filesystem.shader_path = kwargs["--shader"]
+	#
+	if batch_mode:
+		var in_dir_path = load_image_dir.get_current_dir()
+		var out_dir_path: String = kwargs["--output"].rstrip("/")
+		for f in load_image_dir.get_files():
+			var supported = false
+			for e in BATCH_MODE_SUPPORTED_EXTS:
+				if f.ends_with(e):
+					supported = true
+					break
+			if supported:
+				f = in_dir_path + "/" + f
+				print(f)
+				var errors = await $Compositor.update(f)
+				if cli_handle_errors(errors) == 0:
+					var filename = out_dir_path + "/" + f.substr(f.rfind("/"), -1)
+					Filesystem.save_result(filename)
+				else:
+					get_tree().quit(1)
+					return
+		get_tree().quit(0)
+	else:
+		var errors = []
+		if kwargs["--input"] == null:
+			errors = await $Compositor.update()
+		else:
+			errors = await $Compositor.update(kwargs["--input"])
+		if cli_handle_errors(errors) == 0:
+			Filesystem.save_result(kwargs["--output"])
+			get_tree().quit(0)
+		else:
+			get_tree().quit(1)
+
+func prepare_gui():
+	update_title()
+
+func _ready():
+	var args = OS.get_cmdline_args()
+	if len(args) > 0 and args[0] in ["apply", "help"]:
+		# use the commandline interface
+		cli(args)
+	else:
+		prepare_gui()
+
+func update_title(current_file: String = ""):
+	if current_file == "":
+		get_window().title = app_name + " - Viewer"
+	else:
+		get_window().title = current_file + " - " + app_name + " - Viewer"
--- a/src/Main.gd.uid
+++ b/src/Main.gd.uid
@ -0,0 +1 @@
+uid://5sbslwysin5a
--- a/src/MainUI.gd
+++ b/src/MainUI.gd
@ -0,0 +1,120 @@
+extends Control
+
+@onready var open_shader_dialog = %OpenShaderDialog
+@onready var open_image_dialog = %OpenImageDialog
+@onready var save_image_dialog = %SaveImageDialog
+
+@onready var open_shader_button = %OpenShaderButton
+@onready var open_image_button = %OpenImageButton
+@onready var save_image_button = %SaveImageButton
+@onready var fit_image_button = %FitImageButton
+@onready var apply_shader_button = %ApplyShaderButton
+
+@onready var status_indicator = %StatusIndicator
+@onready var error_msg_dialog = %ErrorMessageDialog
+
+@onready var main = get_tree().root.get_node("Main")
+@onready var compositor = %Compositor
+@onready var camera = %Camera
+
+var status_okay_texture: CompressedTexture2D = preload("uid://m1omb6g45vst")
+var status_error_texture: CompressedTexture2D = preload("uid://04iv1gogpuhu")
+
+enum Status {OKAY, ERROR, UNKNOWN = -1}
+
+#
+
+func _input(event):
+	if event.is_action_pressed("apply_shader"):
+		_on_apply_shader_button_pressed()
+	elif event.is_action_pressed("save_shader"):
+		accept_event() # Event is now handled.
+
+#
+
+func set_buttons_disabled(disabled: bool):
+	for b in [open_shader_button, open_image_button, save_image_button, fit_image_button, apply_shader_button, status_indicator]:
+		b.disabled = disabled
+
+#
+
+func _on_open_shader_button_pressed():
+	set_buttons_disabled(true)
+	open_shader_dialog.show()
+
+func _on_open_image_button_pressed():
+	set_buttons_disabled(true)
+	open_image_dialog.show()
+
+func _on_fit_image_button_pressed():
+	camera.fit_image()
+
+func _on_apply_shader_button_pressed():
+	set_buttons_disabled(true)
+	var errors = await compositor.update()
+	set_buttons_disabled(false)
+	if len(errors) > 0:
+		update_status(Status.ERROR, "\n".join(errors))
+	else:
+		update_status(Status.OKAY)
+		status_indicator.disabled = true
+
+func _on_save_image_button_pressed():
+	if Filesystem.result != null:
+		set_buttons_disabled(true)
+		save_image_dialog.current_path = Filesystem.last_image_savepath
+		save_image_dialog.show()
+
+#
+
+func _on_open_shader_dialog_file_selected(path: String):
+	Filesystem.shader_path = path
+	main.update_title(path.split("/")[-1])
+	self._on_apply_shader_button_pressed()
+
+func _on_open_shader_dialog_canceled() -> void:
+	set_buttons_disabled(false)
+
+func _on_open_shader_dialog_confirmed() -> void:
+	set_buttons_disabled(false)
+
+
+func _on_open_image_dialog_file_selected(path: String) -> void:
+	Filesystem.image_path = path
+	self._on_apply_shader_button_pressed()
+	
+func _on_open_image_dialog_canceled() -> void:
+	set_buttons_disabled(false)
+
+func _on_open_image_dialog_confirmed() -> void:
+	set_buttons_disabled(false)
+
+
+func _on_save_image_dialog_file_selected(path):
+	Filesystem.save_result(path)
+	set_buttons_disabled(false)
+
+func _on_save_image_dialog_canceled() -> void:
+	set_buttons_disabled(false)
+
+func _on_save_image_dialog_confirmed() -> void:
+	set_buttons_disabled(false)
+
+#
+
+func update_status(status: Status, msg: String = ""):
+	error_msg_dialog.dialog_text = msg
+	error_msg_dialog.reset_size()
+	if status == Status.OKAY:
+		status_indicator.texture_normal = status_okay_texture
+	elif status == Status.ERROR:
+		status_indicator.texture_normal = status_error_texture
+	else:
+		status_indicator.texture_normal = null
+	if msg == "":
+		status_indicator.disabled = true
+	else:
+		status_indicator.disabled = false
+
+func _on_status_indicator_pressed() -> void:
+	error_msg_dialog.show()
--- a/src/MainUI.gd.uid
+++ b/src/MainUI.gd.uid
@ -0,0 +1 @@
+uid://bxgmf2ny7yuc8
--- a/src/VersionLabel.gd
+++ b/src/VersionLabel.gd
@ -0,0 +1,8 @@
+extends Label
+
+func _ready():
+	text = ProjectSettings.get_setting("application/config/name") \
+		+ " " \
+		+ ProjectSettings.get_setting("application/config/version") \
+		+ " | Godot " \
+		+ Engine.get_version_info()["string"]
--- a/src/VersionLabel.gd.uid
+++ b/src/VersionLabel.gd.uid
@ -0,0 +1 @@
+uid://bh0gpu3i2p47f
--- a/src/assets/bg.png
+++ b/src/assets/bg.png
--- a/src/assets/bg.png.import
+++ b/src/assets/bg.png.import
@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://d2nwchyd6huob"
+path="res://.godot/imported/bg.png-7c8713dd1fab321784216191fa747e53.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://src/assets/bg.png"
+dest_files=["res://.godot/imported/bg.png-7c8713dd1fab321784216191fa747e53.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
--- a/src/assets/error.svg
+++ b/src/assets/error.svg
@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="30"
+   height="30"
+   viewBox="0 0 30 30"
+   version="1.1"
+   id="svg5"
+   inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
+   sodipodi:docname="error.svg"
+   inkscape:export-filename="error.svg"
+   inkscape:export-xdpi="96"
+   inkscape:export-ydpi="96"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview7"
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+  </g>
+</svg>
--- a/src/assets/error.svg.import
+++ b/src/assets/error.svg.import
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+
+importer="texture"
+type="CompressedTexture2D"
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+}
+
+[deps]
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+dest_files=["res://.godot/imported/error.svg-28fb29635cf59d39cabf7052619f602f.ctex"]
+
+[params]
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+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
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+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=2.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false
--- a/src/assets/icon.png
+++ b/src/assets/icon.png
--- a/src/assets/icon.png.import
+++ b/src/assets/icon.png.import
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+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://kqwc4avs2xdp"
+path="res://.godot/imported/icon.png-d8298ab6eda392a806be6bb7eec65b9c.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://src/assets/icon.png"
+dest_files=["res://.godot/imported/icon.png-d8298ab6eda392a806be6bb7eec65b9c.ctex"]
+
+[params]
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+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
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+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
--- a/src/assets/okay.svg
+++ b/src/assets/okay.svg
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="30"
+   height="30"
+   viewBox="0 0 30 30"
+   version="1.1"
+   id="svg5"
+   inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
+   sodipodi:docname="success.svg"
+   inkscape:export-filename="error.svg"
+   inkscape:export-xdpi="96"
+   inkscape:export-ydpi="96"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview7"
+     pagecolor="#505050"
+     bordercolor="#ffffff"
+     borderopacity="1"
+     inkscape:showpageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="1"
+     inkscape:deskcolor="#505050"
+     inkscape:document-units="px"
+     showgrid="true"
+     inkscape:zoom="22.627417"
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+     inkscape:cy="14.385204"
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+     inkscape:window-maximized="1"
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+       originy="0" />
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+       height="30"
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+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
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+       style="opacity:0.75;fill:#15ff1e;fill-opacity:1;stroke:none;stroke-width:6;stroke-linejoin:round;stroke-dasharray:none;stroke-opacity:1;paint-order:normal"
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+</svg>
--- a/src/assets/okay.svg.import
+++ b/src/assets/okay.svg.import
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+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://m1omb6g45vst"
+path="res://.godot/imported/okay.svg-de66a022ef37753b085371b7c60aefd1.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
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+dest_files=["res://.godot/imported/okay.svg-de66a022ef37753b085371b7c60aefd1.ctex"]
+
+[params]
+
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+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
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+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
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+process/channel_remap/red=0
+process/channel_remap/green=1
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+process/premult_alpha=false
+process/normal_map_invert_y=false
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+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=2.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false
--- a/src/scenes/main.tscn
+++ b/src/scenes/main.tscn
@ -0,0 +1,219 @@
+[gd_scene load_steps=13 format=3 uid="uid://bjah7k4bxo044"]
+
+[ext_resource type="Script" uid="uid://5sbslwysin5a" path="res://src/Main.gd" id="1_64y3g"]
+[ext_resource type="Script" uid="uid://d106170kuigl3" path="res://src/ImageCompositor.gd" id="2_4ykh7"]
+[ext_resource type="Shader" uid="uid://ctk7jomfyx0fh" path="res://src/shader/ivd_outline.gdshader" id="3_0fllm"]
+[ext_resource type="Script" uid="uid://ctc4lhbdsoq7u" path="res://src/ImageViewportDisplay.gd" id="4_pbpx2"]
+[ext_resource type="Script" uid="uid://b6r8rigubdctk" path="res://src/Camera.gd" id="5_hkdq6"]
+[ext_resource type="Texture2D" uid="uid://d2nwchyd6huob" path="res://src/assets/bg.png" id="6_kokaf"]
+[ext_resource type="Theme" uid="uid://cwqlns34rj3vx" path="res://src/theme.tres" id="6_rjp5f"]
+[ext_resource type="Script" uid="uid://bxgmf2ny7yuc8" path="res://src/MainUI.gd" id="7_5puhk"]
+[ext_resource type="Script" uid="uid://bh0gpu3i2p47f" path="res://src/VersionLabel.gd" id="8_kod8x"]
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_y2ea0"]
+shader = ExtResource("3_0fllm")
+shader_parameter/zoom_level = Vector2(1, 1)
+
+[sub_resource type="ViewportTexture" id="ViewportTexture_lct1c"]
+viewport_path = NodePath("Compositor")
+
+[sub_resource type="LabelSettings" id="LabelSettings_6o860"]
+font_size = 12
+shadow_color = Color(0, 0, 0, 1)
+
+[node name="Main" type="Node2D"]
+script = ExtResource("1_64y3g")
+
+[node name="Compositor" type="SubViewport" parent="."]
+unique_name_in_owner = true
+script = ExtResource("2_4ykh7")
+
+[node name="ImageViewportDisplay" type="Sprite2D" parent="."]
+unique_name_in_owner = true
+material = SubResource("ShaderMaterial_y2ea0")
+texture = SubResource("ViewportTexture_lct1c")
+script = ExtResource("4_pbpx2")
+
+[node name="Camera" type="Camera2D" parent="."]
+unique_name_in_owner = true
+offset = Vector2(0, -64)
+script = ExtResource("5_hkdq6")
+
+[node name="CanvasLayerBg" type="CanvasLayer" parent="."]
+layer = -1
+
+[node name="Control" type="Control" parent="CanvasLayerBg"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="TextureRect" type="TextureRect" parent="CanvasLayerBg/Control"]
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+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+texture = ExtResource("6_kokaf")
+stretch_mode = 1
+
+[node name="CanvasLayer" type="CanvasLayer" parent="."]
+
+[node name="MainUI" type="Control" parent="CanvasLayer"]
+unique_name_in_owner = true
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+pivot_offset = Vector2(320, 320)
+theme = ExtResource("6_rjp5f")
+script = ExtResource("7_5puhk")
+
+[node name="OpenShaderDialog" type="FileDialog" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+auto_translate_mode = 1
+title = "Load Shader"
+size = Vector2i(521, 175)
+ok_button_text = "Open"
+mode_overrides_title = false
+file_mode = 0
+access = 2
+filters = PackedStringArray("*.gdshader")
+use_native_dialog = true
+
+[node name="OpenImageDialog" type="FileDialog" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+auto_translate_mode = 1
+title = "Load Image"
+size = Vector2i(521, 175)
+ok_button_text = "Open"
+mode_overrides_title = false
+file_mode = 0
+access = 2
+filters = PackedStringArray("*.png", "*.jpg", "*.jpeg")
+use_native_dialog = true
+
+[node name="SaveImageDialog" type="FileDialog" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+auto_translate_mode = 1
+title = "Export Image"
+size = Vector2i(661, 175)
+mode_overrides_title = false
+access = 2
+filters = PackedStringArray("*.png")
+use_native_dialog = true
+
+[node name="ErrorMessageDialog" type="AcceptDialog" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+auto_translate_mode = 1
+title = "Status"
+initial_position = 2
+size = Vector2i(256, 128)
+popup_window = true
+ok_button_text = "Close"
+
+[node name="OpenShaderButton" type="Button" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+layout_mode = 1
+offset_left = 16.0
+offset_top = 16.0
+offset_right = 128.0
+offset_bottom = 48.0
+text = "Open Shader"
+
+[node name="OpenImageButton" type="Button" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+layout_mode = 1
+offset_left = 16.0
+offset_top = 56.0
+offset_right = 128.0
+offset_bottom = 88.0
+text = "Open Image"
+
+[node name="SaveImageButton" type="Button" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+layout_mode = 1
+offset_left = 144.0
+offset_top = 16.0
+offset_right = 216.0
+offset_bottom = 48.0
+disabled = true
+text = "Export"
+
+[node name="FitImageButton" type="Button" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+layout_mode = 1
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -176.0
+offset_top = 16.0
+offset_right = -128.0
+offset_bottom = 48.0
+grow_horizontal = 0
+text = "Fit"
+
+[node name="ApplyShaderButton" type="Button" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+layout_mode = 1
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -112.0
+offset_top = 16.0
+offset_right = -16.0
+offset_bottom = 48.0
+grow_horizontal = 0
+text = "Apply (F5)"
+
+[node name="StatusIndicator" type="TextureButton" parent="CanvasLayer/MainUI"]
+unique_name_in_owner = true
+layout_mode = 1
+anchors_preset = 1
+anchor_left = 1.0
+anchor_right = 1.0
+offset_left = -220.0
+offset_top = 21.0
+offset_right = -196.0
+offset_bottom = 45.0
+grow_horizontal = 0
+disabled = true
+ignore_texture_size = true
+stretch_mode = 0
+
+[node name="VersionLabel" type="Label" parent="CanvasLayer/MainUI"]
+layout_mode = 1
+anchors_preset = 12
+anchor_top = 1.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = 16.0
+offset_top = -24.0
+offset_right = -16.0
+grow_horizontal = 2
+grow_vertical = 0
+label_settings = SubResource("LabelSettings_6o860")
+horizontal_alignment = 1
+vertical_alignment = 1
+script = ExtResource("8_kod8x")
+
+[connection signal="canceled" from="CanvasLayer/MainUI/OpenShaderDialog" to="CanvasLayer/MainUI" method="_on_open_shader_dialog_canceled"]
+[connection signal="confirmed" from="CanvasLayer/MainUI/OpenShaderDialog" to="CanvasLayer/MainUI" method="_on_open_shader_dialog_confirmed"]
+[connection signal="file_selected" from="CanvasLayer/MainUI/OpenShaderDialog" to="CanvasLayer/MainUI" method="_on_open_shader_dialog_file_selected"]
+[connection signal="canceled" from="CanvasLayer/MainUI/OpenImageDialog" to="CanvasLayer/MainUI" method="_on_open_image_dialog_canceled"]
+[connection signal="confirmed" from="CanvasLayer/MainUI/OpenImageDialog" to="CanvasLayer/MainUI" method="_on_open_image_dialog_confirmed"]
+[connection signal="file_selected" from="CanvasLayer/MainUI/OpenImageDialog" to="CanvasLayer/MainUI" method="_on_open_image_dialog_file_selected"]
+[connection signal="canceled" from="CanvasLayer/MainUI/SaveImageDialog" to="CanvasLayer/MainUI" method="_on_save_image_dialog_canceled"]
+[connection signal="confirmed" from="CanvasLayer/MainUI/SaveImageDialog" to="CanvasLayer/MainUI" method="_on_save_image_dialog_confirmed"]
+[connection signal="file_selected" from="CanvasLayer/MainUI/SaveImageDialog" to="CanvasLayer/MainUI" method="_on_save_image_dialog_file_selected"]
+[connection signal="pressed" from="CanvasLayer/MainUI/OpenShaderButton" to="CanvasLayer/MainUI" method="_on_open_shader_button_pressed"]
+[connection signal="pressed" from="CanvasLayer/MainUI/OpenImageButton" to="CanvasLayer/MainUI" method="_on_open_image_button_pressed"]
+[connection signal="pressed" from="CanvasLayer/MainUI/SaveImageButton" to="CanvasLayer/MainUI" method="_on_save_image_button_pressed"]
+[connection signal="pressed" from="CanvasLayer/MainUI/FitImageButton" to="CanvasLayer/MainUI" method="_on_fit_image_button_pressed"]
+[connection signal="pressed" from="CanvasLayer/MainUI/ApplyShaderButton" to="CanvasLayer/MainUI" method="_on_apply_shader_button_pressed"]
+[connection signal="pressed" from="CanvasLayer/MainUI/StatusIndicator" to="CanvasLayer/MainUI" method="_on_status_indicator_pressed"]
--- a/src/shader/ivd_outline.gdshader
+++ b/src/shader/ivd_outline.gdshader
@ -0,0 +1,16 @@
+shader_type canvas_item;
+
+uniform vec2 zoom_level = vec2(1.0);
+const float thickness = 3.0;
+
+void fragment() {
+	vec2 t = thickness * TEXTURE_PIXEL_SIZE / zoom_level;
+	if (
+		UV.x < t.x ||
+		UV.y < t.y ||
+		UV.x > 1.0-t.x ||
+		UV.y > 1.0-t.y
+	) {
+		COLOR = mix(COLOR, vec4(0.5), 0.5);
+	}
+}
--- a/src/shader/ivd_outline.gdshader.uid
+++ b/src/shader/ivd_outline.gdshader.uid
@ -0,0 +1 @@
+uid://ctk7jomfyx0fh
--- a/src/theme.tres
+++ b/src/theme.tres
@ -0,0 +1,57 @@
+[gd_resource type="Theme" load_steps=4 format=3 uid="uid://cwqlns34rj3vx"]
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_bm5o2"]
+content_margin_left = 4.0
+content_margin_top = 4.0
+content_margin_right = 4.0
+content_margin_bottom = 4.0
+bg_color = Color(0.1, 0.1, 0.1, 0.3)
+border_width_left = 1
+border_width_top = 1
+border_width_right = 1
+border_width_bottom = 1
+border_color = Color(1, 1, 1, 0.27451)
+corner_radius_top_left = 3
+corner_radius_top_right = 3
+corner_radius_bottom_right = 3
+corner_radius_bottom_left = 3
+corner_detail = 5
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_l0k8a"]
+content_margin_left = 4.0
+content_margin_top = 4.0
+content_margin_right = 4.0
+content_margin_bottom = 4.0
+bg_color = Color(0.225, 0.225, 0.225, 0.6)
+border_width_left = 1
+border_width_top = 1
+border_width_right = 1
+border_width_bottom = 1
+border_color = Color(1, 1, 1, 0.784314)
+corner_radius_top_left = 3
+corner_radius_top_right = 3
+corner_radius_bottom_right = 3
+corner_radius_bottom_left = 3
+corner_detail = 5
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_1dkyv"]
+content_margin_left = 4.0
+content_margin_top = 4.0
+content_margin_right = 4.0
+content_margin_bottom = 4.0
+bg_color = Color(0.1, 0.1, 0.1, 0.6)
+border_width_left = 1
+border_width_top = 1
+border_width_right = 1
+border_width_bottom = 1
+border_color = Color(1, 1, 1, 0.509804)
+corner_radius_top_left = 3
+corner_radius_top_right = 3
+corner_radius_bottom_right = 3
+corner_radius_bottom_left = 3
+corner_detail = 5
+
+[resource]
+Button/styles/disabled = SubResource("StyleBoxFlat_bm5o2")
+Button/styles/hover = SubResource("StyleBoxFlat_l0k8a")
+Button/styles/normal = SubResource("StyleBoxFlat_1dkyv")
--- a/tools/get_version.gd
+++ b/tools/get_version.gd
@ -0,0 +1,7 @@
+extends SceneTree
+
+# godot --headless --no-header -s tools/get_version.gd
+
+func _init() -> void:
+	print(ProjectSettings.get_setting("application/config/version"))
+	quit(0)
--- a/tools/get_version.gd.uid
+++ b/tools/get_version.gd.uid
@ -0,0 +1 @@
+uid://cdhqbascy6pvy