VHS Shader — Install Guide (Iris)
=================================

1. Make sure you have Iris installed (Fabric or NeoForge build for your
   Minecraft version): https://irisshaders.dev

2. Open your Minecraft instance's shaderpacks folder:
   - Vanilla launcher / most launchers: .minecraft/shaderpacks
   - You can jump straight there from Options > Video Settings > Shader Packs
     > "Open Shader Pack Folder" (once Iris is installed).

3. Drop the whole "VHS_Shader" folder (or the VHS_Shader.zip, no need to
   unzip it) directly into the shaderpacks folder.

4. In-game: Options > Video Settings > Shader Packs > select "VHS_Shader".

5. Click the gear/wrench icon next to "VHS_Shader" in that same screen to
   open the shader's settings. Every effect has its own on/off switch and
   sliders, organized into sub-menus:

   Tracking & Glitches
     - Tracking Wobble / Wobble Amount
     - Glitch Bands / Glitch Rarity / Glitch Strength
     - Rolling Bar / Roll Bar Brightness / Roll Bar Speed

   Chroma & Aberration
     - Chromatic Aberration / Aberration Amount
     - Chroma Edges / Sensitivity / Width / Intensity / Direction Bias
     - Chroma Edge Debug View (shows just the detected edge mask)

   Softness & Bloom
     - Soft Blur / Soft Blur Amount
     - Bloom / Bloom Strength / Bloom Threshold

   Film Grain & Noise
     - Scanlines / Scanline Strength
     - Film Grain / Grain Amount
     - Dropout Lines / Dropout Rarity / Dropout Strength

   Color Grade & Vignette
     - Color Bleed / Desaturation Amount / Hue Smear Amount
     - Vignette / Vignette Start / Vignette End
     - Contrast

   Frame & Exposure
     - Pillarbox / Pillarbox Width
     - Exposure Lift

   Fog
     - Distance Fog (on/off)
     - Fog Start Distance (in chunks, default 6 - fades in gradually and
       reaches full density at your Minecraft render distance setting)

No text-editor tweaking needed for any of this anymore — everything is
in-game. If you ever do want to dig into the code, it all lives in
shaders/final.fsh (post-processing effects) and the shaders/gbuffers_*
files (lighting grade + fog on world geometry).

Enjoy the tape-static aesthetic!
