Bump version to v10.2

Release/v9.0

.gitignore

@@ -16,7 +16,6 @@ mono_crash.*.json
 *.x86_64
 godot.*.template_release.*
 dist/*
-!dist/.gitkeep
 
 screenshot.png.import
 

README.md

@@ -21,12 +21,16 @@ You can find the latest releases [here](https://github.com/ChaoticByte/Fragmente
 
 ## Usage
 
-With Fragemented, you are editing images by writing GDShaders. This brings almost endless opportunities to create unique art.  
+With Fragemented, 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/).
 
-The repo also includes examples. You can use them as a starting-point to write your own filters.
+**The builtin editor got removed** from Fragmented with version **v9.0**. I advise you to write your shaders directly in the Godot Editor.
 
-Besides the regular GDShader stuff, Fragmented also has so-called directives. Those allow to further control the behaviour of the application. The most important directive is `//!load` to load an image.
+**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, Fragmented 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
 
@@ -58,20 +62,22 @@ Example:
 //!load ...
 //!steps 5
 
+uniform int STEP;
+uniform int STEPS;
+
 void fragment() {
   if (STEP == 0) {
-	...
+	  ...
   } else if (STEP == 1) {
-	...
+	  ...
+  } else if (STEP == STEPS-1) {
+    ...
   }
-  // ... and so on
 }
 ```
 
 ## Shaderlib
 
-> Note: The shaderlib API is still unstable as I am figuring things out. It will be declared stable with version 10.
-
 This repo comes with a (still small) shader library including pre-written functions and more.  
 Have a look at the `shaderlib` folder.
 
@@ -80,7 +86,7 @@ Here is an example:
 ```glsl
 shader_type canvas_item;
 
-#include "res://shaderlib/oklab.gdshaderinc"
+#include "./shaderlib/oklab.gdshaderinc"
 
 //!load ./images/swamp.jpg
 
@@ -101,20 +107,33 @@ You can run Fragmented from the commandline or scripts.
 ### Usage
 
 ```
-./Fragmented cmd --shader PATH [--load-image PATH]
+~ Fragmented CLI ~
+-================-
 
-  --shader PATH      The path to the shader
-  --output PATH      Where to write the resulting image to.
-                     In batch mode, this must be a folder.
-  --load-image PATH  The path to the image. This will overwrite the
-                     load directive of the shader file.
-                     Passing a folder activates batch mode.
-                     (optional)
+Usage:
+
+./Fragmented <command> <args...>
+
+Commands:
+
+ help
+
+  | Shows this help text.
+
+ apply --shader PATH [--load-image PATH]
+
+  | Applies a shader file.
+
+    --shader PATH      The path to the shader
+    --output PATH      Where to write the resulting image to.
+                       In batch mode, this must be a folder.
+    --load-image PATH  The path to the image. This will overwrite the
+                       load directive of the shader file.
+                       Passing a folder activates batch mode.
+                       (optional)
 
 ```
 
-You can also run `./Fragmented cmd help` to show the help message.
-
 ### Batch Mode
 
 Since version v8.0, you can pass a directory to `--load-image` and `--output`. This will process all images in the input directory and write the output to the output directory.
@@ -124,15 +143,14 @@ Since version v8.0, you can pass a directory to `--load-image` and `--output`. T
 #### Examples
 
 ```
-./Fragmented cmd --shader ./examples/oklab.gdshader --output ./output.png
+./Fragmented apply --shader ./examples/oklab.gdshader --output ./output.png
 ```
 
 ```
-./Fragmented cmd --shader ./examples/oklab.gdshader --load-image ~/Pictures/test.png --output ./output.png
+./Fragmented apply --shader ./examples/oklab.gdshader --load-image ~/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
-- the shaderlib API is still unstable, this will change with version 10
 - commandline interface: `--headless` is not supported

build-template/Containerfile

@@ -7,13 +7,12 @@ 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 build-essential scons 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 DEBIAN_FRONTEND=noninteractive apt-get install -yq git
+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 4.3-stable /godot-src
+RUN git clone https://github.com/godotengine/godot.git -b 4.4-stable /godot-src
 
 FROM clone-src
 

build-template/build.sh

@@ -3,12 +3,12 @@
 set -e
 
 function log {
-    echo -e "\033[1;36m* $@\033[0m"
+    echo -e "\033[1;36m***** $@ *****\033[0m"
 }
 
-log
+log "                                         "
 log "Fragmented - Godot Build Template Builder"
-log
+log "                                         "
 
 cd $(dirname $0)
 log Switched to $(pwd)

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/Fragmented-${VERSION}.x86_64"
+
+log Packing shaderlib
+
+ZIP_PATH_SHADERLIB=$(realpath "dist/Fragmented-${VERSION}_shaderlib.zip")
+
+zip -r "${ZIP_PATH_SHADERLIB}" shaderlib/
+
+log Packing project template
+
+ZIP_PATH_PROJECT_TEMPLATE=$(realpath "dist/Fragmented-${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}" *
+)

examples/0_empty.tscn

@@ -0,0 +1,3 @@
+[gd_scene format=3 uid="uid://db2rhq8rwv5wo"]
+
+[node name="Node" type="Node"]

examples/blur.gdshader

@@ -1,7 +1,7 @@
 shader_type canvas_item;
 
 //!load ./images/swamp.jpg
-#include "res://shaderlib/blur.gdshaderinc"
+#include "./shaderlib/blur.gdshaderinc"
 
 void fragment() {
 	COLOR = gaussian_blur(TEXTURE, UV, 48, 24.0);

examples/blur.gdshader.uid

@@ -0,0 +1 @@
+uid://cny8dtukv54wt

examples/channel_offset.gdshader.uid

@@ -0,0 +1 @@
+uid://0efk4fornlg6

examples/color_and_pixelate.gdshader

@@ -1,7 +1,7 @@
 shader_type canvas_item;
 
-#include "res://shaderlib/hsv.gdshaderinc"
-#include "res://shaderlib/pixelate.gdshaderinc"
+#include "./shaderlib/hsv.gdshaderinc"
+#include "./shaderlib/pixelate.gdshaderinc"
 
 //!load ./images/swamp.jpg
 

examples/color_and_pixelate.gdshader.uid

@@ -0,0 +1 @@
+uid://gd23hu7ro148

examples/denoise.gdshader

@@ -2,7 +2,7 @@ shader_type canvas_item;
 
 //!load ./images/noisy.png
 
-#include "res://shaderlib/denoise.gdshaderinc"
+#include "./shaderlib/denoise.gdshaderinc"
 
 void fragment() {
 	COLOR = smart_denoise(TEXTURE, UV, 12.0, 1.0, .12);

examples/denoise.gdshader.uid

@@ -0,0 +1 @@
+uid://cbwyneu03fki6

examples/greyscale.gdshader.uid

@@ -0,0 +1 @@
+uid://dvarqolt6es27

examples/images/CREDITS.md

@@ -3,3 +3,4 @@
 
 - swamp.jpg by [clfr21 on Pixabay](https://pixabay.com/de/users/clfr21-6530007/)
 - grass.png by [GDJ on Pixabay](https://pixabay.com/users/gdj-1086657/)
+- mountain.jpg by [Phghvvcftyyufj on Pixabay](https://pixabay.com/users/phghvvcftyyufj-12646982)

examples/images/mountain.jpg.import

@@ -0,0 +1,34 @@
+[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/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+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

examples/kuwahara.gdshader

@@ -0,0 +1,16 @@
+shader_type canvas_item;
+
+//!load ./images/mountain.jpg
+
+#include "./shaderlib/kuwahara.gdshaderinc"
+#include "./shaderlib/hsv.gdshaderinc"
+
+void fragment() {
+	// Kuwahara
+	COLOR.rgb = kuwahara(TEXTURE, UV, 20, 80.0, 18.0, 0.6, .15, 8);
+	// A litte bit of color adjustments
+	vec4 hsv = rgb2hsv(COLOR);
+	hsv.x += .03;
+	hsv.y *= 1.4;
+	COLOR = hsv2rgb(hsv);
+}

examples/kuwahara.gdshader.uid

@@ -0,0 +1 @@
+uid://cdhyuk7u8kxyk

examples/lowpass.gdshader.uid

@@ -0,0 +1 @@
+uid://dn02xsjm1kok8

examples/multistep_distort.gdshader

@@ -3,6 +3,8 @@ shader_type canvas_item;
 //!steps 9
 //!load ./images/swamp.jpg
 
+uniform int STEP;
+
 const float strength = 0.01;
 
 void fragment() {

examples/multistep_distort.gdshader.uid

@@ -0,0 +1 @@
+uid://c17u5jx7a7o81

examples/multistep_pixelsort.gdshader

@@ -0,0 +1,20 @@
+shader_type canvas_item;
+
+#include "./shaderlib/pixelsort.gdshaderinc"
+
+//!steps 1500
+uniform int STEP;
+
+//!load ./images/mountain.jpg
+
+void fragment() {
+	// pixel sorting works in multiple steps
+	COLOR = pixelsort_step(
+		TEXTURE, UV,
+		DIRECTION_BOTTOM_TO_TOP,
+		COLOR_MODE_OKLCH,
+		{true, false, false},
+		{-INF, .007, -INF},
+		{INF, INF, INF},
+		STEP);
+}

examples/multistep_pixelsort.gdshader.uid

@@ -0,0 +1 @@
+uid://csk0fg4by651b

examples/oklab.gdshader

@@ -1,6 +1,6 @@
 shader_type canvas_item;
 
-#include "res://shaderlib/oklab.gdshaderinc"
+#include "./shaderlib/oklab.gdshaderinc"
 
 //!load ./images/swamp.jpg
 

examples/oklab.gdshader.uid

@@ -0,0 +1 @@
+uid://cu37y8lc0x83

examples/place_texture.gdshader

@@ -1,7 +1,7 @@
 shader_type canvas_item;
 
-#include "res://shaderlib/place_texture.gdshaderinc"
-#include "res://shaderlib/common.gdshaderinc"
+#include "./shaderlib/place_texture.gdshaderinc"
+#include "./shaderlib/common.gdshaderinc"
 
 //!load ./images/swamp.jpg
 //!load+ img2 ./images/grass.png

examples/place_texture.gdshader.uid

@@ -0,0 +1 @@
+uid://dybe4t5rbbkc6

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="Fragmented Project"
+run/main_scene="res://0_empty.tscn"
+config/features=PackedStringArray("4.4", "Forward Plus")

examples/shaderlib

@@ -0,0 +1 @@
+../shaderlib

examples/sobel.gdshader

@@ -0,0 +1,10 @@
+shader_type canvas_item;
+
+//!load ./images/noisy.png
+
+#include "./shaderlib/sobel.gdshaderinc"
+
+void fragment() {
+	// Sobel Filter
+	COLOR = sobel(TEXTURE, UV);
+}

examples/sobel.gdshader.uid

@@ -0,0 +1 @@
+uid://h376mk1fq4ky

export_presets.cfg

@@ -8,10 +8,12 @@ dedicated_server=false
 custom_features=""
 export_filter="all_resources"
 include_filter=""
-exclude_filter="screenshot.png, examples/*"
+exclude_filter="screenshot.png, examples/*, shaderlib/*, tools/*, build-template/*"
 export_path="dist/Fragmented.x86_64"
+patches=PackedStringArray()
 encryption_include_filters=""
 encryption_exclude_filters=""
+seed=0
 encrypt_pck=false
 encrypt_directory=false
 script_export_mode=2

project.godot

@@ -11,11 +11,10 @@ config_version=5
 [application]
 
 config/name="Fragmented"
-config/version="v8.0"
-run/main_scene="res://scenes/main.tscn"
-config/features=PackedStringArray("4.3", "Mobile")
-run/low_processor_mode=true
-config/icon="res://assets/icon.png"
+config/version="v10.2"
+run/main_scene="res://src/scenes/main.tscn"
+config/features=PackedStringArray("4.4", "Mobile")
+config/icon="res://src/assets/icon.png"
 
 [autoload]
 
@@ -24,11 +23,10 @@ ShaderDirectiveParser="*res://src/ShaderDirectiveParser.gd"
 
 [display]
 
-window/size/viewport_width=704
-window/size/viewport_height=704
+window/size/viewport_width=640
+window/size/viewport_height=672
 window/energy_saving/keep_screen_on=false
 window/subwindows/embed_subwindows=false
-window/vsync/vsync_mode=0
 
 [editor_plugins]
 
@@ -72,4 +70,4 @@ 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, 0, 0, 1)
+environment/defaults/default_clear_color=Color(0.501961, 0.501961, 0.501961, 1)

scenes/main.tscn

@@ -1,46 +0,0 @@
-[gd_scene load_steps=10 format=3 uid="uid://bjah7k4bxo044"]
-
-[ext_resource type="Script" path="res://src/Main.gd" id="1_2625y"]
-[ext_resource type="Script" path="res://src/ImageCompositor.gd" id="2_4thch"]
-[ext_resource type="Shader" path="res://src/shader/ivd_outline.gdshader" id="3_6xihe"]
-[ext_resource type="Script" path="res://src/ImageViewportDisplay.gd" id="3_n4itb"]
-[ext_resource type="Script" path="res://src/UIWindow.gd" id="6_8k0ha"]
-[ext_resource type="PackedScene" uid="uid://btgits2mfup0h" path="res://scenes/ui_container.tscn" id="7_5ci0e"]
-[ext_resource type="Script" path="res://src/Camera.gd" id="8_mls06"]
-
-[sub_resource type="ShaderMaterial" id="ShaderMaterial_y2ea0"]
-shader = ExtResource("3_6xihe")
-shader_parameter/zoom_level = Vector2(1, 1)
-
-[sub_resource type="ViewportTexture" id="ViewportTexture_lct1c"]
-viewport_path = NodePath("Compositor")
-
-[node name="Main" type="Node2D"]
-script = ExtResource("1_2625y")
-
-[node name="Compositor" type="SubViewport" parent="."]
-unique_name_in_owner = true
-script = ExtResource("2_4thch")
-
-[node name="ImageViewportDisplay" type="Sprite2D" parent="."]
-unique_name_in_owner = true
-material = SubResource("ShaderMaterial_y2ea0")
-texture = SubResource("ViewportTexture_lct1c")
-script = ExtResource("3_n4itb")
-
-[node name="Camera" type="Camera2D" parent="."]
-unique_name_in_owner = true
-script = ExtResource("8_mls06")
-
-[node name="EditorWindow" type="Window" parent="."]
-unique_name_in_owner = true
-disable_3d = true
-position = Vector2i(48, 36)
-size = Vector2i(704, 704)
-visible = false
-script = ExtResource("6_8k0ha")
-
-[node name="UserInterfaceContainer" parent="EditorWindow" instance=ExtResource("7_5ci0e")]
-unique_name_in_owner = true
-
-[connection signal="close_requested" from="EditorWindow" to="EditorWindow" method="_on_close_requested"]

scenes/ui_container.tscn

@@ -1,204 +0,0 @@
-[gd_scene load_steps=3 format=3 uid="uid://btgits2mfup0h"]
-
-[ext_resource type="Script" path="res://src/UIAppVersion.gd" id="1_5qvnb"]
-[ext_resource type="Script" path="res://src/Editor.gd" id="2_haub5"]
-
-[node name="UserInterfaceContainer" type="Control"]
-layout_mode = 3
-anchors_preset = 15
-anchor_right = 1.0
-anchor_bottom = 1.0
-grow_horizontal = 2
-grow_vertical = 2
-
-[node name="AppName" type="Label" parent="."]
-layout_mode = 0
-offset_left = 24.0
-offset_top = 16.0
-offset_right = 208.0
-offset_bottom = 48.0
-theme_override_font_sizes/font_size = 20
-text = "Fragmented"
-vertical_alignment = 2
-
-[node name="AppVersion" type="Label" parent="."]
-layout_mode = 0
-offset_left = 152.0
-offset_top = 17.0
-offset_right = 208.0
-offset_bottom = 47.0
-theme_override_font_sizes/font_size = 14
-text = "v0
-"
-vertical_alignment = 2
-script = ExtResource("1_5qvnb")
-
-[node name="Editor" type="Control" parent="."]
-layout_mode = 1
-anchors_preset = 15
-anchor_right = 1.0
-anchor_bottom = 1.0
-offset_left = 24.0
-offset_top = 64.0
-offset_right = -24.0
-offset_bottom = -16.0
-grow_horizontal = 2
-grow_vertical = 2
-script = ExtResource("2_haub5")
-
-[node name="OpenShaderDialog" type="FileDialog" parent="Editor"]
-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="SaveShaderDialog" type="FileDialog" parent="Editor"]
-unique_name_in_owner = true
-auto_translate_mode = 1
-title = "Save Shader"
-size = Vector2i(661, 175)
-ok_button_text = "Save"
-mode_overrides_title = false
-access = 2
-filters = PackedStringArray("*.gdshader")
-use_native_dialog = true
-
-[node name="SaveImageDialog" type="FileDialog" parent="Editor"]
-unique_name_in_owner = true
-auto_translate_mode = 1
-title = "Export Image"
-size = Vector2i(661, 175)
-ok_button_text = "Save"
-mode_overrides_title = false
-access = 2
-filters = PackedStringArray("*.png")
-use_native_dialog = true
-
-[node name="CodeEdit" type="CodeEdit" parent="Editor"]
-unique_name_in_owner = true
-layout_mode = 1
-anchors_preset = 15
-anchor_right = 1.0
-anchor_bottom = 1.0
-offset_top = 48.0
-grow_horizontal = 2
-grow_vertical = 2
-theme_override_font_sizes/font_size = 14
-placeholder_text = "// Test"
-wrap_mode = 1
-minimap_draw = true
-minimap_width = 40
-caret_blink = true
-draw_control_chars = true
-draw_tabs = true
-draw_spaces = true
-line_length_guidelines = Array[int]([80])
-gutters_draw_line_numbers = true
-code_completion_enabled = true
-indent_automatic = true
-auto_brace_completion_enabled = true
-auto_brace_completion_highlight_matching = true
-
-[node name="NewShaderButton" type="Button" parent="Editor"]
-layout_mode = 1
-offset_right = 48.0
-offset_bottom = 32.0
-text = "New"
-
-[node name="OpenShaderButton" type="Button" parent="Editor"]
-layout_mode = 1
-offset_left = 56.0
-offset_right = 112.0
-offset_bottom = 32.0
-text = "Open"
-
-[node name="SaveShaderButton" type="Button" parent="Editor"]
-layout_mode = 1
-offset_left = 120.0
-offset_top = -1.0
-offset_right = 176.0
-offset_bottom = 31.0
-text = "Save"
-
-[node name="SaveShaderAsButton" type="Button" parent="Editor"]
-layout_mode = 1
-offset_left = 184.0
-offset_right = 263.0
-offset_bottom = 32.0
-text = "Save As"
-
-[node name="SaveImageButton" type="Button" parent="Editor"]
-unique_name_in_owner = true
-layout_mode = 1
-anchors_preset = 1
-anchor_left = 1.0
-anchor_right = 1.0
-offset_left = -72.0
-offset_bottom = 32.0
-grow_horizontal = 0
-disabled = true
-text = "Export"
-
-[node name="FitImageButton" type="Button" parent="Editor"]
-layout_mode = 1
-anchors_preset = 1
-anchor_left = 1.0
-anchor_right = 1.0
-offset_left = -128.0
-offset_right = -80.0
-offset_bottom = 32.0
-grow_horizontal = 0
-text = "Fit"
-
-[node name="ApplyShaderButton" type="Button" parent="Editor"]
-layout_mode = 1
-anchors_preset = 1
-anchor_left = 1.0
-anchor_right = 1.0
-offset_left = -232.0
-offset_right = -136.0
-offset_bottom = 31.0
-grow_horizontal = 0
-text = "Apply (F5)"
-
-[node name="StatusIndicator" type="TextureButton" parent="Editor"]
-unique_name_in_owner = true
-layout_mode = 1
-anchors_preset = 1
-anchor_left = 1.0
-anchor_right = 1.0
-offset_left = -76.0
-offset_top = 56.0
-offset_right = -56.0
-offset_bottom = 76.0
-grow_horizontal = 0
-disabled = true
-ignore_texture_size = true
-stretch_mode = 0
-
-[node name="ErrorMessageDialog" type="AcceptDialog" parent="Editor"]
-unique_name_in_owner = true
-title = "Status"
-initial_position = 2
-size = Vector2i(256, 128)
-popup_window = true
-ok_button_text = "Close"
-
-[connection signal="file_selected" from="Editor/OpenShaderDialog" to="Editor" method="_on_open_shader_dialog_file_selected"]
-[connection signal="file_selected" from="Editor/SaveShaderDialog" to="Editor" method="_on_save_shader_dialog_file_selected"]
-[connection signal="file_selected" from="Editor/SaveImageDialog" to="Editor" method="_on_save_image_dialog_file_selected"]
-[connection signal="code_completion_requested" from="Editor/CodeEdit" to="Editor" method="_on_code_edit_code_completion_requested"]
-[connection signal="pressed" from="Editor/NewShaderButton" to="Editor" method="_on_new_shader_button_pressed"]
-[connection signal="pressed" from="Editor/OpenShaderButton" to="Editor" method="_on_open_shader_button_pressed"]
-[connection signal="pressed" from="Editor/SaveShaderButton" to="Editor" method="_on_save_shader_button_pressed"]
-[connection signal="pressed" from="Editor/SaveShaderAsButton" to="Editor" method="_on_save_shader_as_button_pressed"]
-[connection signal="pressed" from="Editor/SaveImageButton" to="Editor" method="_on_save_image_button_pressed"]
-[connection signal="pressed" from="Editor/FitImageButton" to="Editor" method="_on_fit_image_button_pressed"]
-[connection signal="pressed" from="Editor/ApplyShaderButton" to="Editor" method="_on_apply_shader_button_pressed"]
-[connection signal="pressed" from="Editor/StatusIndicator" to="Editor" method="_on_status_indicator_pressed"]

shaderlib/blur.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://bjtljvcjcu6dr

shaderlib/common.gdshaderinc

@@ -13,3 +13,15 @@ vec4 alpha_blend(vec4 b, vec4 a) {
 	vec3 col = ((a.rgb*a.a) + ((b.rgb*b.a) * (1.0 - a.a)) / alpha);
 	return vec4(col.r, col.g, col.b, alpha);
 }
+
+/*
+	Rotate UV
+*/
+
+vec2 rotateUV(vec2 uv, float rotation, vec2 center) {
+	float cosRot = cos(rotation);
+	float sinRot = sin(rotation);
+    return vec2(
+		cosRot * (uv.x - center.x) + sinRot * (uv.y - center.y) + center.x,
+        cosRot * (uv.y - center.y) - sinRot * (uv.x - center.x) + center.y);
+}

shaderlib/common.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://764b6ekchgb8

shaderlib/denoise.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://b7ksfifyyfcip

shaderlib/hsv.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://bbr3tq6mp5qa2

shaderlib/kuwahara.gdshaderinc

@@ -0,0 +1,116 @@
+/*
+	Kuwahara Filter, adapted
+	original code: https://godotshaders.com/shader/generalized-kuwahara/
+	original authors:
+		- https://godotshaders.com/author/firerabbit/
+		- https://github.com/GarrettGunnell (Acerola)
+	license of the original code:
+
+	MIT License
+
+	Copyright (c) 2022 Garrett Gunnell
+	Copyright (c) 2024 Firerabbit
+
+	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.
+*/
+
+vec3 kuwahara(
+	sampler2D texture,
+	vec2 uv,
+	int kernel_size,	 // should be > 2 - high values will affect performance
+	float hardness,		 // should be in the range of 1.0 - 100.0
+	float sharpness,	 // should be in the range of 1.0 - 18.0
+	float zero_crossing, // should be in the range of 0.5 - 2.0
+	float zeta,			 // should be in the range of 0.01 - 3.0
+	int n				 // number of iterations, should be 8, must be <= 8
+)  {
+	vec2 texelSize = vec2(1.0 / vec2(textureSize(texture, 0)));
+	vec4 m[8];
+	vec3 s[8];
+
+	int kernel_radius = kernel_size / 2;
+
+	float sin_zero_crossing = sin(zero_crossing);
+	float eta = (zeta + cos(zero_crossing)) / (sin_zero_crossing * sin_zero_crossing);
+
+	for (int k = 0; k < n; ++k) {
+		m[k] = vec4(0.0f);
+		s[k] = vec3(0.0f);
+	}
+
+	for (int y = -kernel_radius; y <= kernel_radius; ++y) {
+		for (int x = -kernel_radius; x <= kernel_radius; ++x) {
+			vec2 v = vec2(float(x), float(y)) / float(kernel_radius);
+			vec3 c = texture(texture, uv + vec2(float(x), float(y)) * texelSize.xy).rgb;
+			c = clamp(c, 0.0f, 1.0f);
+			float sum = 0.0f;
+			float w[8];
+			float z, vxx, vyy;
+
+			/* Calculate Polynomial Weights */
+			vxx = zeta - eta * v.x * v.x;
+			vyy = zeta - eta * v.y * v.y;
+			z = max(0, v.y + vxx);
+			w[0] = z * z;
+			sum += w[0];
+			z = max(0, -v.x + vyy);
+			w[2] = z * z;
+			sum += w[2];
+			z = max(0, -v.y + vxx);
+			w[4] = z * z;
+			sum += w[4];
+			z = max(0, v.x + vyy);
+			w[6] = z * z;
+			sum += w[6];
+			v = sqrt(2.0f) / 2.0f * vec2(v.x - v.y, v.x + v.y);
+			vxx = zeta - eta * v.x * v.x;
+			vyy = zeta - eta * v.y * v.y;
+			z = max(0, v.y + vxx);
+			w[1] = z * z;
+			sum += w[1];
+			z = max(0, -v.x + vyy);
+			w[3] = z * z;
+			sum += w[3];
+			z = max(0, -v.y + vxx);
+			w[5] = z * z;
+			sum += w[5];
+			z = max(0, v.x + vyy);
+			w[7] = z * z;
+			sum += w[7];
+
+			float g = exp(-3.125f * dot(v,v)) / sum;
+
+			for (int k = 0; k < 8; ++k) {
+				float wk = w[k] * g;
+				m[k] += vec4(c * wk, wk);
+				s[k] += c * c * wk;
+			}
+		}
+	}
+
+	vec4 output = vec4(0.0f);
+	for (int k = 0; k < n; ++k) {
+		m[k].rgb /= m[k].w;
+		s[k] = abs(s[k] / m[k].w - m[k].rgb * m[k].rgb);
+		float sigma2 = s[k].r + s[k].g + s[k].b;
+		float w = 1.0f / (1.0f + pow(hardness * 1000.0f * sigma2, 0.5f * sharpness));
+		output += vec4(m[k].rgb * w, w);
+	}
+
+	return clamp(output / output.w, 0.0f, 1.0f).rgb;
+}

shaderlib/kuwahara.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://chqh2cni1qiuu

shaderlib/oklab.gdshaderinc

@@ -9,9 +9,11 @@
 	The fourth value is always alpha.
 */
 
-#include "res://shaderlib/common.gdshaderinc"
+#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;
@@ -29,6 +31,8 @@ vec4 rgb2oklab(vec4 c) {
 }
 
 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;
@@ -46,6 +50,7 @@ vec4 oklab2rgb(vec4 c) {
 }
 
 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)),
@@ -55,6 +60,7 @@ vec4 oklab2oklch(vec4 c) {
 }
 
 vec4 oklch2oklab(vec4 c) {
+	// oklch.z (hue) ranges from -3.6 to 3.6
 	return vec4(
 		c.x,
 		c.y * cos(c.z),

shaderlib/oklab.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://ckw4nfslk4m6l

shaderlib/pixelate.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://dpu5nneo5bgnq

shaderlib/pixelsort.gdshaderinc

@@ -0,0 +1,126 @@
+
+/*
+	Pixelsorting using odd-even sort
+
+	I roughly followed https://ciphrd.com/2020/04/08/pixel-sorting-on-shader-using-well-crafted-sorting-filters-glsl/
+	- vector fields aren't implemented, diagonal sorting is not supported!
+*/
+
+#include "./hsv.gdshaderinc"
+#include "./oklab.gdshaderinc"
+
+#define INF (1.0/0.0)
+
+#define DIRECTION_LEFT_TO_RIGHT vec2(1, 0)
+#define DIRECTION_RIGHT_TO_LEFT vec2(-1, 0)
+#define DIRECTION_TOP_TO_BOTTOM vec2(0, 1)
+#define DIRECTION_BOTTOM_TO_TOP vec2(0, -1)
+
+#define COLOR_MODE_RGB 0
+#define COLOR_MODE_OKLAB 1
+#define COLOR_MODE_OKLCH 2
+#define COLOR_MODE_HSV 3
+
+vec4 pixelsort_step(
+	sampler2D tex, vec2 uv,
+	vec2 direction, // e.g. (1, 0) for left-to-right or (0, -1) for bottom-to-top
+	                // see DIRECTION_LEFT_TO_RIGHT, etc.
+	                // note: vertical sorting doesn't work, so using e.g. (1, 1) won't work
+	int color_mode, // 0 = RGB, 1 = OKLAB, 2 = OKLCH, 3 = HSV
+	                // see COLOR_MODE_RGB, etc.
+	bool color_channel_mask[3], // which color channel(s) to take into account
+	float lower_threshold[3],   // lower threshold for pixels to be considered sorted
+	                            // when in doubt, use {-INF, -INF, -INF}
+	float upper_threshold[3],   // upper threshold; {INF, INF, INF}
+	int step_ // from STEP
+) {
+	// sanitize inputs
+	direction = clamp(direction, vec2(-1, -1), vec2(1, 1));
+	color_mode = clamp(color_mode, 0, 3);
+	// get neighbour
+	vec2 texture_size = vec2(textureSize(tex, 0));
+	vec2 a = (mod(floor(uv * texture_size), 2.0) * 2.0 - 1.0) * (mod(float(step_), 2.0) * 2.0 - 1.0);
+	vec2 neighbour_uv = uv + (direction * a / texture_size);
+	//
+	vec4 x = texture(tex, uv);
+	vec4 y = texture(tex, neighbour_uv);
+	if ( // stop at borders
+		neighbour_uv.x > 1.0 ||
+		neighbour_uv.x < 0.0 ||
+		neighbour_uv.y > 1.0 ||
+		neighbour_uv.y < 0.0
+	) {
+		return x;
+	} else {
+		// convert color if necessary
+		// get value to compare
+		float vx = 0.0;
+		float vy = 0.0;
+		vec3 color_x;
+		vec3 color_y;
+		if (color_mode == COLOR_MODE_RGB) {
+			color_x = x.rgb;
+			color_y = y.rgb;
+		} else if (color_mode == COLOR_MODE_OKLAB) {
+			color_x = rgb2oklab(x).rgb;
+			color_y = rgb2oklab(y).rgb;
+		} else if (color_mode == COLOR_MODE_OKLCH) {
+			color_x = oklab2oklch(rgb2oklab(x)).rgb;
+			color_y = oklab2oklch(rgb2oklab(y)).rgb;
+		} else if (color_mode == COLOR_MODE_HSV) {
+			color_x = rgb2hsv(x).rgb;
+			color_y = rgb2hsv(y).rgb;
+		}
+		float divisor = 0.0;
+		if (color_channel_mask[0]) {
+			vx += color_x.r;
+			vy += color_y.r;
+			divisor += 1.0;
+		}
+		if (color_channel_mask[1]) {
+			vx += color_x.g;
+			vy += color_y.g;
+			divisor += 1.0;
+		}
+		if (color_channel_mask[2]) {
+			vx += color_x.b;
+			vy += color_y.b;
+			divisor += 1.0;
+		}
+		divisor = max(divisor, 1.0);
+		vx /= divisor;
+		vy /= divisor;
+		//
+		if (
+			(a.x < .0 && abs(direction).y == .0) ||
+			(a.y < .0 && abs(direction).x == .0)
+		) {
+			if (
+				vy > vx &&
+				// threshold
+				color_x.r < upper_threshold[0] &&
+				color_x.g < upper_threshold[1] &&
+				color_x.b < upper_threshold[2] &&
+				color_x.r > lower_threshold[0] &&
+				color_x.g > lower_threshold[1] &&
+				color_x.b > lower_threshold[2]
+			) { return y; }
+			else { return x; }
+		} else if (
+			(a.x > .0 && abs(direction).y == .0) ||
+			(a.y > .0 && abs(direction).x == .0)
+		) {
+			if (
+				vx >= vy &&
+				// threshold
+				color_y.r < upper_threshold[0] &&
+				color_y.g < upper_threshold[1] &&
+				color_y.b < upper_threshold[2] &&
+				color_y.r > lower_threshold[0] &&
+				color_y.g > lower_threshold[1] &&
+				color_y.b > lower_threshold[2]
+			) { return y; }
+			else { return x; }
+		}
+	}
+}

shaderlib/pixelsort.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://doefnwk3vyr0o

shaderlib/place_texture.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://51u2hjq62e5i

shaderlib/sobel.gdshaderinc

@@ -0,0 +1,50 @@
+
+/*
+	Edge Detection (Sobel Filter and Gaussian Blur) by FencerDevLog, adapted
+	original code: https://godotshaders.com/shader/edge-detection-sobel-filter-and-gaussian-blur/
+	license of the original code: CC0
+*/
+
+vec3 _convolution(sampler2D tex, vec2 uv, vec2 pixel_size) {
+	vec3 conv = vec3(0.0);
+	// Gaussian blur kernel
+	float gauss[25] = {
+		0.00390625, 0.015625, 0.0234375, 0.015625, 0.00390625,
+		0.015625, 0.0625, 0.09375, 0.0625, 0.015625,
+		0.0234375, 0.09375, 0.140625, 0.09375, 0.0234375,
+		0.015625, 0.0625, 0.09375, 0.0625, 0.015625,
+		0.00390625, 0.015625, 0.0234375, 0.015625, 0.00390625
+	};
+	for (int row = 0; row < 5; row++) {
+		for (int col = 0; col < 5; col++) {
+			conv += texture(tex, uv + vec2(float(col - 2), float(row - 2)) * pixel_size).rgb * gauss[row * 5 + col];
+		}
+	}
+	return conv;
+}
+
+vec4 sobel(sampler2D tex, vec2 uv) {
+	vec2 pixel_size = 1.0/vec2(textureSize(tex, 0));
+	vec3 pixels[9];  // Sobel kernel
+	// [0, 1, 2]
+	// [3, 4, 5]
+	// [6, 7, 8]
+	for (int row = 0; row < 3; row++) {
+		for (int col = 0; col < 3; col++) {
+			vec2 uv_ = uv + vec2(float(col - 1), float(row - 1)) * pixel_size;
+			pixels[row * 3 + col] = _convolution(tex, uv_, pixel_size);
+		}
+	}
+
+	// Sobel operator
+	vec3 gx = (
+		pixels[0] * -1.0 + pixels[3] * -2.0 + pixels[6] * -1.0
+		+ pixels[2] * 1.0 + pixels[5] * 2.0 + pixels[8] * 1.0
+	);
+	vec3 gy = (
+		pixels[0] * -1.0 + pixels[1] * -2.0 + pixels[2] * -1.0
+		+ pixels[6] * 1.0 + pixels[7] * 2.0 + pixels[8] * 1.0
+	);
+	vec3 sobel = sqrt(gx * gx + gy * gy);
+	return vec4(sobel, 1.0);
+}

shaderlib/sobel.gdshaderinc.uid

@@ -0,0 +1 @@
+uid://bqo1fpunnl05f

src/Camera.gd

@@ -1,9 +1,9 @@
 extends Camera2D
 
-var drag = false
-
 @onready var image_viewport_display = %ImageViewportDisplay
 
+var drag = false
+
 func _input(event):
 	if event.is_action_pressed("zoom_out"):
 		zoom_out()
@@ -16,31 +16,35 @@ func _input(event):
 	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 = viewport_size.x / image_size.x / 1.1
-		if zoomf * image_size.y > viewport_size.y:
-			zoomf = viewport_size.y / image_size.y / 1.1
+		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 update_vd_zoomlevel():
-	image_viewport_display.update_zoom_texture_filter(self.zoom)
-	image_viewport_display.material.set_shader_parameter("zoom_level", self.zoom)
-
 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()
-	update_vd_zoomlevel()
 
 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()
-	update_vd_zoomlevel()
 
 func _on_fit_image_button_pressed():
 	fit_image()

src/Camera.gd.uid

@@ -0,0 +1 @@
+uid://b6r8rigubdctk

src/Editor.gd

@@ -1,307 +0,0 @@
-extends Control
-
-@onready var code_editor = %CodeEdit
-
-@onready var open_shader_dialog = %OpenShaderDialog
-@onready var save_shader_dialog = %SaveShaderDialog
-@onready var ui_control_filesave = %SaveImageDialog
-
-@onready var save_image_button = %SaveImageButton
-
-@onready var status_indicator = %StatusIndicator
-@onready var error_msg_dialog = %ErrorMessageDialog
-
-@onready var main = get_tree().root.get_node("Main")
-@onready var compositor = main.get_node("%Compositor")
-@onready var camera = main.get_node("%Camera")
-
-#
-
-var status_okay_texture: CompressedTexture2D = preload("uid://m1omb6g45vst")
-var status_error_texture: CompressedTexture2D = preload("uid://04iv1gogpuhu")
-
-# # # # # # # # # # #
-# GDShader keywords #
-# https://github.com/godotengine/godot/blob/e96ad5af98547df71b50c4c4695ac348638113e0/servers/rendering/shader_language.cpp
-# https://github.com/godotengine/godot/blob/e96ad5af98547df71b50c4c4695ac348638113e0/servers/rendering/shader_types.cpp
-#
-const gdshader_boolean_values = [
-	"true", "false"
-]
-const gdshader_datatypes = [
-	"void",
-	"bool", "bvec2", "bvec3", "bvec4",
-	"int", "ivec2", "ivec3", "ivec4",
-	"uint", "uvec2", "uvec3", "uvec4",
-	"float", "vec2", "vec3", "vec4",
-	"mat2", "mat3", "mat4",
-	"sampler2D", "isampler2D", "usampler2D",
-	"sampler2DArray", "isampler2DArray", "usampler2DArray",
-]
-const gdshader_precision_modifiers = [
-	"lowp", "mediump", "heighp"
-]
-const gdshader_global_space_keywords = [
-	"uniform", "group_uniforms", "varying", "const",
-	"struct", "shader_type", "render_mode"
-]
-const gdshader_uniform_qualifiers = [
-	"instance", "global"
-]
-const gdshader_block_keywords = [
-	"if", "else",
-	"for", "while", "do",
-	"switch", "case",
-	"default", "break", "continue",
-	"return", "discard"
-]
-const gdshader_function_specifier_keywords = [
-	"in", "out", "inout"
-]
-const gdshader_hints = [
-	"source_color", "hint_range", "instance_index"
-]
-const gdshader_sampler_hints = [
-	"hint_normal",
-	"hint_default_white", "hint_default_black", "hint_default_transparent",
-	"hint_anisotropy",
-	"hint_roughness_r", "hint_roughness_g", "hint_roughness_b", "hint_roughness_a",
-	"hint_roughness_normal", "hint_roughness_gray",
-	"hint_screen_texture", "hint_normal_roughness_texture",
-	"hint_depth_texture",
-	"filter_nearest", "filter_linear",
-	"filter_nearest_mipmap", "filter_linear_mipmap",
-	"filter_nearest_mipmap_anisotropic", "filter_linear_mipmap_anisotropic",
-	"repeat_enable", "repeat_disable"
-]
-const gdshader_builtin_functions = [
-	"radians", "degrees",
-	"sin", "cos", "tan", "asin", "acos", "atan", "sinh", "cosh", "tanh",
-	"asinh", "acosh", "atanh",
-	"pow", "exp", "exp2", "log", "log2", "sqrt", "inversesqrt",
-	"abs", "sign", "floor", "trunc", "round", "roundEven", "ceil", "fract",
-	"mod", "modf", "min", "max", "clamp",
-	"mix", "step", "smoothstep",
-	"isnan", "isinf",
-	"floatBitsToInt", "floatBitsToUint", "intBitsToFloat", "uintBitsToFloat",
-	"length", "distance",
-	"dot", "cross",
-	"normalize", "reflect", "refract", "faceforward",
-	"matrixCompMult", "outerProduct", "transpose",
-	"determinant", "inverse",
-	"lessThan", "greaterThan", "lessThanEqual", "greaterThanEqual",
-	"equal", "notEqual",
-	"any", "all", "not",
-	"textureSize", "texture", "textureProj", "textureLod", "texelFetch",
-	"textureProjLod", "textureGrad", "textureProjGrad", "textureGather",
-	"textureQueryLod", "textureQueryLevels",
-	"dFdx", "dFdxCoarse", "dFdxFine", "dFdy", "dFdyCoarse", "dFdyFine",
-	"fwidth", "fwidthCoarse", "fwidthFine"
-]
-const gdshader_sub_functions = [
-	"length", "fma",
-	"packHalf2x16", "packUnorm2x16", "packSnorm2x16", "packUnorm4x8", "packSnorm4x8",
-	"unpackHalf2x16", "unpackUnorm2x16", "unpackSnorm2x16", "unpackUnorm4x8", "unpackSnorm4x8",
-	"bitfieldExtract", "bitfieldInsert", "bitfieldReverse", "bitCount",
-	"findLSB", "findMSB",
-	"umulExtended", "imulExtended",
-	"uaddCarry", "usubBorrow",
-	"ldexp", "frexp"
-]
-const gdshader_builtins = [
-	"TIME", "PI", "TAU", "E",
-	"VERTEX",
-	"UV",
-	"COLOR",
-	"POINT_SIZE",
-	"AT_LIGHT_PASS",
-	"TEXTURE_PIXEL_SIZE",
-	"SHADOW_VERTEX", "LIGHT_VERTEX",
-	"FRAGCOORD",
-	"NORMAL", "NORMAL_MAP", "NORMAL_MAP_DEPTH",
-	"TEXTURE",
-	"POINT_COORD",
-	"SPECULAR_SHININESS"
-]
-const gdshader_preprocessor = [
-	"define", "undef", "include", "pragma",
-	"if", "elif", "ifdef", "ifndef", "else", "endif"
-]
-# shaderlib
-var shaderlib_regex = {
-	"colorspaces": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/colorspaces\.gdshaderinc\"'),
-	"transform": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/transform\.gdshaderinc\"'),
-	"transparency": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/transparency\.gdshaderinc\"'),
-	"effects": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/effects\.gdshaderinc\"'),
-	"denoise": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/denoise\.gdshaderinc\"'),
-	"blur": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/blur\.gdshaderinc\"'),
-}
-const shaderlib_functions = {
-	"colorspaces": ["rgb2hsv", "hsv2rgb", "oklab2rgb", "rgb2oklab", "oklab2oklch", "oklch2oklab"],
-	"transform": ["place_texture"],
-	"transparency": ["alpha_blend"],
-	"effects": ["pixelate"],
-	"denoise": ["smart_denoise"],
-	"blur": ["gaussian_blur"],
-}
-#
-# configure Highlighter
-#
-class ShaderSyntaxHighlighter extends CodeHighlighter:
-	func _init():
-		add_color_region("//", "", Color.WEB_GRAY, true)
-		add_color_region("/*", "*/", Color.WEB_GRAY, false)
-		function_color = Color.INDIAN_RED
-		for k in gdshader_boolean_values:
-			keyword_colors[k] = Color.INDIAN_RED
-		for k in (	gdshader_datatypes
-					+ gdshader_hints
-					+ gdshader_sampler_hints
-					+ gdshader_global_space_keywords
-					+ gdshader_function_specifier_keywords
-					+ gdshader_precision_modifiers
-					+ gdshader_uniform_qualifiers):
-			keyword_colors[k] = Color.ORCHID;
-		for k in gdshader_block_keywords:
-			keyword_colors[k] = Color.CORAL
-		for k in gdshader_builtins:
-			keyword_colors[k] = Color.DARK_TURQUOISE
-		member_variable_color = Color.LIGHT_BLUE
-		number_color = Color.AQUA
-		symbol_color = Color.GRAY
-#
-# and code completion
-#
-func _on_code_edit_code_completion_requested():
-	for k in gdshader_boolean_values:
-		code_editor.code_completion_prefixes.append(k)
-		code_editor.add_code_completion_option(CodeEdit.KIND_PLAIN_TEXT, k, k, Color.INDIAN_RED)
-	for k in (	gdshader_datatypes
-				+ gdshader_hints
-				+ gdshader_sampler_hints
-				+ gdshader_global_space_keywords
-				+ gdshader_function_specifier_keywords
-				+ gdshader_precision_modifiers
-				+ gdshader_uniform_qualifiers):
-		code_editor.code_completion_prefixes.append(k)
-		code_editor.add_code_completion_option(CodeEdit.KIND_CLASS, k, k, Color.ORCHID)
-	for k in gdshader_block_keywords:
-		code_editor.code_completion_prefixes.append(k)
-		code_editor.add_code_completion_option(CodeEdit.KIND_PLAIN_TEXT, k, k, Color.CORAL)
-	for k in gdshader_builtins:
-		code_editor.code_completion_prefixes.append(k)
-		code_editor.add_code_completion_option(CodeEdit.KIND_CONSTANT, k, k, Color.DARK_TURQUOISE)
-	for k in gdshader_builtin_functions + gdshader_sub_functions:
-		code_editor.code_completion_prefixes.append(k)
-		code_editor.add_code_completion_option(CodeEdit.KIND_FUNCTION, k, k+"(", Color.INDIAN_RED)
-	for k in gdshader_preprocessor:
-		code_editor.code_completion_prefixes.append(k)
-		code_editor.add_code_completion_option(CodeEdit.KIND_PLAIN_TEXT, "#" + k, k)
-	# shaderlib #
-	var shader_code = code_editor.text
-	for key in shaderlib_regex:
-		if shaderlib_regex[key].search(shader_code) != null:
-			if key in shaderlib_functions:
-				for k in shaderlib_functions[key]:
-					code_editor.code_completion_prefixes.append(k)
-					code_editor.add_code_completion_option(CodeEdit.KIND_FUNCTION, k, k+"(", Color.INDIAN_RED)
-	# # # # # # #
-	code_editor.update_code_completion_options(true)
-#
-# # # # # # # # # # # #
-
-func _ready():
-	code_editor.code_completion_enabled = true
-	code_editor.syntax_highlighter = ShaderSyntaxHighlighter.new()
-	self.update_code_edit()
-
-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.
-		_on_save_shader_button_pressed()
-
-func update_code_edit():
-	code_editor.text = Filesystem.shader_code
-
-enum Status {OKAY, ERROR, UNKNOWN = -1}
-
-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_new_shader_button_pressed():
-	main.update_title()
-	Filesystem.reset()
-	self.update_code_edit()
-	compositor.update()
-	update_status(Status.UNKNOWN)
-
-func _on_open_shader_button_pressed():
-	open_shader_dialog.show()
-
-func _on_save_shader_button_pressed():
-	Filesystem.shader_code = code_editor.text
-	if Filesystem.last_shader_savepath == "":
-		_on_save_shader_as_button_pressed()
-	else:
-		_on_save_shader_dialog_file_selected(Filesystem.last_shader_savepath)
-
-func _on_save_shader_as_button_pressed() -> void:
-	Filesystem.shader_code = code_editor.text
-	if Filesystem.last_shader_savepath == "":
-		save_shader_dialog.current_file = "filter.gdshader"
-	else:
-		save_shader_dialog.current_path = Filesystem.last_shader_savepath
-	save_shader_dialog.show()
-
-func _on_fit_image_button_pressed():
-	camera.fit_image()
-
-func _on_apply_shader_button_pressed():
-	save_image_button.disabled = true
-	Filesystem.shader_code = code_editor.text
-	var errors = await compositor.update()
-	if len(errors) > 0:
-		update_status(Status.ERROR, "\n".join(errors))
-	else:
-		update_status(Status.OKAY)
-		save_image_button.disabled = false
-
-func _on_save_image_button_pressed():
-	if Filesystem.result != null:
-		ui_control_filesave.current_path = Filesystem.last_image_savepath
-		ui_control_filesave.show()
-
-#
-
-func _on_open_shader_dialog_file_selected(path: String):
-	Filesystem.load_shader(path)
-	main.update_title(path.split("/")[-1])
-	self.update_code_edit()
-	self._on_apply_shader_button_pressed()
-
-func _on_save_shader_dialog_file_selected(path):
-	Filesystem.save_shader(path)
-	main.update_title(path.split("/")[-1])
-
-func _on_save_image_dialog_file_selected(path):
-	Filesystem.save_result(path)
-
-#
-
-func _on_status_indicator_pressed() -> void:
-	error_msg_dialog.show()

src/Filesystem.gd

@@ -1,25 +1,31 @@
 extends Node
 
-@onready var template_shader: Shader = load("res://src/shader/template.gdshader")
-@onready var shader_code: String = template_shader.code
+var cwd = "."
+
+var shader_path = "":
+	get():
+		return shader_path
+	set(v):
+		var old = shader_path
+		shader_path = v
+		if "/" in v: # update current working directory
+			cwd = v.substr(0, v.rfind("/"))
+		if old != shader_path:
+			store_last_opened_file()
+
+var shader: Shader:
+	get():
+		print("Load ", shader_path)
+		return load(shader_path)
 
 var original_image: ImageTexture
+
 var additional_images: Dictionary
 var result: Image
 
-var cwd = "."
 var last_image_savepath = ""
-var last_shader_savepath = ""
 var last_original_image_path = ""
 
-func reset():
-	self.shader_code = self.template_shader.code
-	self.last_image_savepath = ""
-	self.last_shader_savepath = ""
-	self.last_original_image_path = ""
-	self.original_image = null
-	self.result = null
-
 func get_absolute_path(p: String) -> String:
 	# this only works on Linux!
 	if !p.begins_with("/"):
@@ -27,14 +33,14 @@ func get_absolute_path(p: String) -> String:
 	return p
 
 func load_original_image(path: String) -> String: # returns an error message
+	print("Load ", path)
 	var img = Image.new()
 	var err = img.load(path)
 	if err == OK:
 		original_image = ImageTexture.create_from_image(img)
-		if path != self.last_original_image_path:
-			self.last_original_image_path = path
-		if self.last_image_savepath == "":
+		if self.last_image_savepath == "" or path != self.last_original_image_path:
 			self.last_image_savepath = path
+		self.last_original_image_path = path
 		return ""
 	return error_string(err) + " " + path
 
@@ -42,6 +48,7 @@ func clear_additional_images():
 	additional_images.clear()
 
 func load_additional_image(key: String, path: String) -> String: # returns Error Message String
+	print("Load ", path)
 	var img = Image.new()
 	var err = img.load(path)
 	if err == OK:
@@ -58,33 +65,13 @@ func save_result(path: String):
 	else:
 		self.last_image_savepath = path
 
-func load_shader(path: String):
-	print("Load ", path)
-	var file = FileAccess.open(path, FileAccess.READ)
-	if file != null:
-		self.shader_code = file.get_as_text()
-		if "/" in path: # update current working directory
-			self.cwd = path.substr(0, path.rfind("/"))
-		self.last_shader_savepath = path
-		store_last_opened_file()
-
-func save_shader(path: String):
-	print("Save ", path)
-	var file = FileAccess.open(path, FileAccess.WRITE)
-	file.store_string(self.shader_code)
-	file.flush()
-	if "/" in path: # update current working directory
-		self.cwd = path.substr(0, path.rfind("/"))
-	self.last_shader_savepath = path
-	store_last_opened_file()
-
 func store_last_opened_file():
 	var f = FileAccess.open("user://last_opened", FileAccess.WRITE)
 	if f != null:
-		f.store_pascal_string(last_shader_savepath)
+		f.store_pascal_string(shader_path)
 		f.flush()
 
 func remember_last_opened_file():
 	var f = FileAccess.open("user://last_opened", FileAccess.READ)
 	if f != null:
-		last_shader_savepath = f.get_pascal_string()
+		shader_path = f.get_pascal_string()

src/Filesystem.gd.uid

@@ -0,0 +1 @@
+uid://rlb041ygdwol

src/ImageCompositor.gd

@@ -37,17 +37,26 @@ func validate_shader_compilation(shader: Shader) -> bool:
 	# test if uniform list is empty -> if it is empty, the shader compilation failed
 	return len(shader.get_shader_uniform_list()) > 0
 
-func inject_step_uniform(shader_code: String) -> Shader:
-	var shader = Shader.new()
-	# this should run after validate_shader_compilation()
-	var fragment_function_match = _fragment_function_regex.search(shader_code)
-	shader.code = shader_code.insert(fragment_function_match.get_start(), "\nuniform int STEP;")
-	return shader
+func shader_has_uniform(shader: Shader, name: String, type: int) -> bool:
+	for u in shader.get_shader_uniform_list():
+		if u["name"] == 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(overwrite_image_path: String = "") -> Array: # returns error messages (strings)
-	# inject STEP uniform & get number of steps
-	var shader: Shader = inject_step_uniform(Filesystem.shader_code)
+	var shader = Filesystem.shader # read from disk
+	if shader == null:
+		return ["No shader opened!"]
+	# get number of steps & check if code has STEP uniform
 	var steps: int = ShaderDirectiveParser.parse_steps_directive(shader.code)
+	var has_step_uniform: bool = shader_has_uniform(shader, "STEP", 2)
+	var has_steps_uniform: bool = shader_has_uniform(shader, "STEPS", 2)
 	# validate shader
 	if not validate_shader_compilation(shader):
 		return ["Shader compilation failed!"]
@@ -82,6 +91,9 @@ func update(overwrite_image_path: String = "") -> Array: # returns error message
 	image_sprite.texture = Filesystem.original_image
 	image_sprite.offset = Filesystem.original_image.get_size() / 2
 	self.size = Filesystem.original_image.get_size()
+	# already 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
@@ -93,17 +105,19 @@ func update(overwrite_image_path: String = "") -> Array: # returns error message
 	# assign material
 	image_sprite.material = mat
 	# iterate n times
+	set_vsync(false) # speed up processing
+	if has_steps_uniform:
+		# set STEPS param
+		mat.set_shader_parameter("STEPS", steps)
 	for i in range(steps):
-		# set STEP param
-		mat.set_shader_parameter("STEP", i)
+		if has_step_uniform:
+			# set STEP param
+			mat.set_shader_parameter("STEP", i)
 		# 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
-	if fit_image:
-		camera.fit_image()
-	camera.update_vd_zoomlevel()
-	image_viewport_display.show()
 	# done
 	return errors

src/ImageCompositor.gd.uid

@@ -0,0 +1 @@
+uid://d106170kuigl3

src/ImageViewportDisplay.gd.uid

@@ -0,0 +1 @@
+uid://ctc4lhbdsoq7u

src/Main.gd

@@ -4,21 +4,24 @@ const BATCH_MODE_SUPPORTED_EXTS = [
 	".bmp", ".dds", ".exr", ".hdr", ".jpeg", ".jpg", ".ktx", ".png", ".svg", ".webp"
 ]
 
-@onready var editor_window = %EditorWindow
-@onready var ui_container = %UserInterfaceContainer
 @onready var app_name = ProjectSettings.get_setting("application/config/name")
 
 func show_help():
 	print(
 		"Usage:\n\n",
-		"./Fragmented cmd --shader PATH [--load-image PATH]\n\n",
-		"  --shader PATH      The path to the shader\n",
-		"  --output PATH      Where to write the resulting image to.\n",
-		"                     In batch mode, this must be a folder.\n",
-		"  --load-image PATH  The path to the image. This will overwrite the\n",
-		"                     load directive of the shader file.\n",
-		"                     Passing a folder activates batch mode.\n",
-		"                     (optional)\n")
+		"./Fragmented <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",
+		"    --output PATH      Where to write the resulting image to.\n",
+		"                       In batch mode, this must be a folder.\n",
+		"    --load-image PATH  The path to the image. This will overwrite the\n",
+		"                       load directive of the shader file.\n",
+		"                       Passing a folder activates batch mode.\n",
+		"                       (optional)\n")
 
 func parse_custom_cmdline(args: PackedStringArray):
 	var kwargs: Dictionary = {"--shader": null, "--output": null, "--load-image": null}
@@ -41,83 +44,83 @@ func cli_handle_errors(errors: Array) -> int:
 			printerr(e)
 	return n_errors
 
-func _ready():
-	var args = OS.get_cmdline_args()
-	if "cmd" in args: # commandline interface
-		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["--load-image"] != null:
-			load_image_dir = DirAccess.open(kwargs["--load-image"])
-			if load_image_dir != null:
-				# batch mode
-				if DirAccess.open(kwargs["--output"]) == null:
-					printerr("If --load-image is a directory, --output has to be one too.\n")
-					show_help()
+func cli(args: PackedStringArray):
+	print(
+		"~ Fragmented 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["--load-image"] != null:
+		load_image_dir = DirAccess.open(kwargs["--load-image"])
+		if load_image_dir != null:
+			# batch mode
+			if DirAccess.open(kwargs["--output"]) == null:
+				printerr("If --load-image 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
-				else:
-					batch_mode = true
-		#
-		Filesystem.load_shader(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["--load-image"] == null:
+			errors = await $Compositor.update()
+		else:
+			errors = await $Compositor.update(kwargs["--load-image"])
+		if cli_handle_errors(errors) == 0:
+			Filesystem.save_result(kwargs["--output"])
 			get_tree().quit(0)
 		else:
-			var errors = []
-			if kwargs["--load-image"] == null:
-				errors = await $Compositor.update()
-			else:
-				errors = await $Compositor.update(kwargs["--load-image"])
-			if cli_handle_errors(errors) == 0:
-				Filesystem.save_result(kwargs["--output"])
-				get_tree().quit(0)
-			else:
-				get_tree().quit(1)
+			get_tree().quit(1)
+
+func prepare_gui():
+	update_title()
+	# Load last opened file
+	Filesystem.remember_last_opened_file()
+	%MainUI._on_apply_shader_button_pressed()
+
+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:
-		update_title()
-		# position windows
-		get_window().position = Vector2i(
-			editor_window.position.x + editor_window.size.x + 50,
-			editor_window.position.y)
-		get_window().min_size = Vector2i(400, 400)
-		editor_window.min_size = Vector2i(560, 400)
-		editor_window.show()
-		# Load last opened file
-		Filesystem.remember_last_opened_file()
-		if Filesystem.last_shader_savepath != "":
-			ui_container.get_node("Editor")._on_open_shader_dialog_file_selected(Filesystem.last_shader_savepath)
+		prepare_gui()
 
 func update_title(current_file: String = ""):
 	if current_file == "":
 		get_window().title = app_name + " - Viewer"
-		editor_window.title = app_name + " - Editor"
 	else:
 		get_window().title = current_file + " - " + app_name + " - Viewer"
-		editor_window.title = current_file + " - " + app_name + " - Editor"

src/Main.gd.uid

@@ -0,0 +1 @@
+uid://5sbslwysin5a

src/MainUI.gd

@@ -0,0 +1,100 @@
+extends Control
+
+@onready var open_shader_dialog = %OpenShaderDialog
+@onready var save_image_dialog = %SaveImageDialog
+
+@onready var open_shader_button = %OpenShaderButton
+@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, 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_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_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()

src/MainUI.gd.uid

@@ -0,0 +1 @@
+uid://bxgmf2ny7yuc8

src/ShaderDirectiveParser.gd.uid

@@ -0,0 +1 @@
+uid://dw8bep14j4j3w

src/UIAppVersion.gd

@@ -1,4 +0,0 @@
-extends Label
-
-func _ready():
-	text = ProjectSettings.get_setting("application/config/version")

src/UIWindow.gd

@@ -1,4 +0,0 @@
-extends Window
-
-func _on_close_requested() -> void:
-	get_tree().quit()

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"]

src/VersionLabel.gd.uid

@@ -0,0 +1 @@
+uid://bh0gpu3i2p47f

src/assets/bg.png.import

@@ -0,0 +1,34 @@
+[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/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+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

src/assets/error.svg.import

@@ -3,15 +3,15 @@
 importer="texture"
 type="CompressedTexture2D"
 uid="uid://04iv1gogpuhu"
-path="res://.godot/imported/error.svg-75fe5f417585e01e99de8885f1f45c3b.ctex"
+path="res://.godot/imported/error.svg-28fb29635cf59d39cabf7052619f602f.ctex"
 metadata={
 "vram_texture": false
 }
 
 [deps]
 
-source_file="res://assets/error.svg"
-dest_files=["res://.godot/imported/error.svg-75fe5f417585e01e99de8885f1f45c3b.ctex"]
+source_file="res://src/assets/error.svg"
+dest_files=["res://.godot/imported/error.svg-28fb29635cf59d39cabf7052619f602f.ctex"]
 
 [params]
 

src/assets/icon.png.import

@@ -3,15 +3,15 @@
 importer="texture"
 type="CompressedTexture2D"
 uid="uid://kqwc4avs2xdp"
-path="res://.godot/imported/icon.png-b6a7fb2db36edd3d95dc42f1dc8c1c5d.ctex"
+path="res://.godot/imported/icon.png-d8298ab6eda392a806be6bb7eec65b9c.ctex"
 metadata={
 "vram_texture": false
 }
 
 [deps]
 
-source_file="res://assets/icon.png"
-dest_files=["res://.godot/imported/icon.png-b6a7fb2db36edd3d95dc42f1dc8c1c5d.ctex"]
+source_file="res://src/assets/icon.png"
+dest_files=["res://.godot/imported/icon.png-d8298ab6eda392a806be6bb7eec65b9c.ctex"]
 
 [params]
 

src/assets/okay.svg.import

@@ -3,15 +3,15 @@
 importer="texture"
 type="CompressedTexture2D"
 uid="uid://m1omb6g45vst"
-path="res://.godot/imported/okay.svg-7f6df15523471a86f27b6817e9528a4e.ctex"
+path="res://.godot/imported/okay.svg-de66a022ef37753b085371b7c60aefd1.ctex"
 metadata={
 "vram_texture": false
 }
 
 [deps]
 
-source_file="res://assets/okay.svg"
-dest_files=["res://.godot/imported/okay.svg-7f6df15523471a86f27b6817e9528a4e.ctex"]
+source_file="res://src/assets/okay.svg"
+dest_files=["res://.godot/imported/okay.svg-de66a022ef37753b085371b7c60aefd1.ctex"]
 
 [params]
 

src/scenes/main.tscn

@@ -0,0 +1,194 @@
+[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"]
+layout_mode = 1
+anchors_preset = 15
+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="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="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/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/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"]

src/shader/ivd_outline.gdshader

@@ -11,6 +11,6 @@ void fragment() {
 		UV.x > 1.0-t.x ||
 		UV.y > 1.0-t.y
 	) {
-		COLOR = mix(COLOR, vec4(1.0), 0.5);
+		COLOR = mix(COLOR, vec4(0.5), 0.5);
 	}
 }

src/shader/ivd_outline.gdshader.uid

@@ -0,0 +1 @@
+uid://ctk7jomfyx0fh

src/shader/template.gdshader

@@ -1,7 +0,0 @@
-shader_type canvas_item;
-
-//!load /path/to/your/image
-
-void fragment() {
-	// Called for every pixel the material is visible on.
-}

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")

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)

tools/get_version.gd.uid

@@ -0,0 +1 @@
+uid://cdhqbascy6pvy