Edit README and in game mod icon

README.md

@@ -2,14 +2,82 @@
 	<img width=256px src="GitHub/logo.png" />
 </p>
 
-# Resolution Control
+# ResolutionControl+
 
-Resolution Control allows you to render Minecraft's 3D portion (i.e. the main game, but not the HUD/GUIs/etc.) at a lower resolution, using nearest-neighbor upsampling. It even has a snazzy settings screen (open by pressing `P` by default) allowing you to adjust this as you go.
+ResolutionControl+ is a fork of [Resolution Control](https://github.com/juliand665/Resolution-Control)
+with additional functionality.
 
-Download in [the releases section](https://github.com/juliand665/Resolution-Control/releases) or on [CurseForge](https://www.curseforge.com/minecraft/mc-mods/resolution-control).
+## Features
 
-![settings](GitHub/settings.png)
+### Resolution Scaling
+
+ResolutionControl+ allows you to change Minecraft's render resolution separately from the HUD elements.
+If you have a good GPU, you can increase the multiplier for anti-aliasing.
+Otherwise, you can lower the multiplier to improve performance or give Minecraft a retro style.
+You can also set a custom multiplier value by pressing the `S` button.
+
+Additionally, you can set the upscale/downscale algorithm used to scale the render to the viewport.
+Linear is useful as an anti-aliasing filter,
+and nearest neighbor generally looks better for lower than native resolutions.
+
+![main](GitHub/mainsettings.png)
+
+---
+
+### Screenshots
+
+ResolutionControl+ can be used to take larger than native resolution screenshots.
+To do this, use the `Screenshot Framebuffer` keybind which is unbound by default.
+
+Compared to *Fabrishot*, this implementation does not lock up the game until the screenshot is saved.
+This makes taking large screenshots is much faster.
+And while a screenshot is being processed, you can take another one without any problems.
+
+Here is the time it takes to take a 16k screenshot, on an i7 4770 and GTX 1060:
+
+```
+Fabrishot: 12 seconds (pause)
+ResolutionControl+: <1 second (initial pause) + 13 seconds (background processing)
+```
+
+[![screenshot](http://img.youtube.com/vi/Dghj0Ldeu0Q/0.jpg)](http://www.youtube.com/watch?v=Dghj0Ldeu0Q)
 
 ---
 
-I created this mod mainly because Minecraft 1.13 made it render at full- rather than half-resolution on retina monitors, causing it to run really badly on my computer. Any way of downscaling I tried resulted in linear upsampling (rather than the nearest-neighbor upsampling Minecraft used to have), which looked blurry and terrible. Enter **Resolution Control**, the answer to your prayers!
+## Settings
+
+**Resolution Scaling**
+
+- Render scale
+    - 0.0 - 8.0x (can be exceeded by manually setting the value)
+    - An estimate VRAM usage is displayed
+- Upscale/downscale algorithm  
+    - Linear, nearest
+
+**Screenshots**
+
+- Use set size
+    - Enabled: render screenshots at the specified resolution
+        - Note: can produce artifacts if the screenshot aspect ratio is significantly different 
+          from the aspect ratio of the viewport
+    - Disabled: render at the scaled render resolution
+- Always allocated
+    - Enabled: screenshot framebuffer is always allocated in memory
+        - May reduce screenshot pause times, at the cost of more VRAM usage during normal gameplay
+    - Disabled: screenshot framebuffer is allocated on-demand and freed immediately after
+- Screenshot size
+    - Screenshot size if `use set size` is enabled
+    - An estimate VRAM usage is displayed
+
+---
+
+## Compatibility
+
+Currently, ResolutionControl+ **does not work with Fabulous Graphics**.
+
+**Sodium** - Compatible
+
+**Canvas Renderer** - Mostly compatible, lower resolutions break HUD item rendering
+
+**Optifine** - Compatible, stacks with its own render scale implementation
+