Update CLI help and README

README.md

@@ -3,7 +3,7 @@
 
 ![screenshot](./screenshot.png)
 
-<p align=center>Color grading with code.</p>
+<p align=center>Use Godot's GLSL dialect for color grading and more.</p>
 
 
 ## Table of Contents
@@ -31,56 +31,7 @@ If you want to learn GDShader, take a look at the [Godot docs](https://docs.godo
 
 **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.
+The template includes examples that you can use 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
@@ -95,8 +46,6 @@ shader_type canvas_item;
 
 #include "./shaderlib/oklab.gdshaderinc"
 
-//!load ./images/swamp.jpg
-
 void fragment() {
 	vec4 oklab = rgb2oklab(COLOR);
 	vec4 oklch = oklab2oklch(oklab);
@@ -117,7 +66,7 @@ You can run Pigment from the commandline or scripts.
 
 ```
 ~ Pigment CLI ~
--================-
+-=============-
 
 Usage:
 
@@ -134,19 +83,19 @@ Commands:
   | Applies a shader file.
 
 	--shader PATH  The path to the shader
-    --input  PATH  The path to the input image.
+	--input  PATH  The path to the image
-                   Passing a folder activates batch mode.
+				   Passing a folder activates batch mode
-    --output PATH  Where to write the resulting image to.
+	--output PATH  Where to write the resulting image to
-                   In batch mode, this must be a folder.
+				   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.
+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.
+> Note: This is not very fast, so using it on maaany images may take some time.
 
 
 #### Examples
@@ -158,5 +107,5 @@ Since version v8.0, you can pass a directory to `--input` and `--output`. This w
 
 ## Known Issues
 
-- screen scaling is unsupported; Using screen scaling could lead to an either blurry UI, or no scaling at all -> see #45
+- On some systems, screen scaling could lead to an either blurry UI, or no scaling at all
-- commandline interface: `--headless` is not supported
+- CLI: Godot's `--headless` option is not supported

src/Main.gd

@@ -13,13 +13,13 @@ func show_help():
 		"Commands:\n\n",
 		" help\n\n",
 		"  | Shows this help text.\n\n",
-		" apply --shader PATH [--load-image PATH]\n\n",
+		" apply --shader PATH --input PATH --output 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",
+		"    --input  PATH  The path to the image\n",
-		"                   Passing a folder activates batch mode.\n",
+		"                   Passing a folder activates batch mode\n",
-		"    --output PATH  Where to write the resulting image to.\n",
+		"    --output PATH  Where to write the resulting image to\n",
-		"                   In batch mode, this must be a folder.\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}