Resource packs

Iris ShaderCompileException: NumberFormatException For input string ""

What it looks like in the log

java.lang.NumberFormatException: For input string: ""

How to fix it

  1. If you are a player using a downloaded shader pack, switch to a different shader pack or update the broken pack to a newer release in Options -> Video Settings -> Shader Packs.
  2. If you are editing or developing the shader pack, check the `.vsh` or `.fsh` files corresponding to the program named in the error (for example, `shadow.vsh` when the log mentions `shadow_terrain_cutout`).
  3. Search your modified shader files for `gl_MultiTexCoord.` without an index number and replace it with a numbered attribute such as `gl_MultiTexCoord0.` or `gl_MultiTexCoord1.`
  4. Press `R` in-game (or click Reload in the Shader Packs menu) to recompile the shader and verify the error is gone.
LoadersFabric, Quilt, Neoforge
SeverityBreaks something
CategoryResource packs

Check your own logDownload iris on 9Minecraft

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