Removed presets, load all images via load directives (implements #9), removed obsolete code, added some improvements

README.md

@@ -13,23 +13,32 @@ You can find the latest releases [here](https://github.com/ChaoticByte/Fragmente
 
 ## Usage
 
-The application includes presets. You can use them as a starting-point to write your own filters.  
-Just load an image, apply a preset, edit the code and hit `F5` to see the changes.
+The repo includes examples. You can use them as a starting-point to write your own filters.  
+Just load an image using `//!load`, edit the shader code and hit `F5` to see the changes.
 
-### Load additional images using the `//!load` directive
+### Load TEXTURE using the `//!load` directive
+
+```glsl
+//!load <filepath>
+```
+
+The image file will be read and available as the `TEXTURE` variable.
+
+#### Load additional images
 
 ```glsl
 //!load <name> <filepath>
 uniform sampler2D <name>;
 ```
 
-With this you can load additional images into your shader.  
-Have a look at the `Mix` preset:
+Have a look at the `mix.gdshader` example:
 
 ```glsl
 shader_type canvas_item;
 
-//!load img2 ./icon.png
+//!load ./example1.png
+
+//!load+ img2 ./example2.jpg
 uniform sampler2D img2: repeat_enable, filter_nearest;
 
 void fragment() {