Cool Cat Lib Canvas Mod FAQ
10 questions players actually ask, answered.
Why do I have Cool Cat Lib Canvas Mod installed, and do I actually need it?
It's a library that other mods use to draw their fancy menus, sliding panels, screen effects and custom skies. You need it only if another mod in your pack lists it as a requirement. If nothing depends on it, it adds very little on its own beyond loading resource-pack skyboxes.
Does Canvas need CoolCatLib Core too?
Yes. Canvas is an extension of CoolCatLib: Core, so Core has to be installed alongside it. Install Canvas and Core together, and check that the mod requiring them is happy with the setup.
Does Cool Cat Lib Canvas go on the client, the server, or both?
Everything it renders, including shaders, skyboxes, widgets and text effects, happens on the client, so players need it installed. Effects can also be triggered by server commands. If a server-side mod in your pack depends on it, install it on the server as well and match what that mod asks for.
What happens if I remove Canvas but keep the mod that needs it?
The mod that depends on it won't have what it needs, so the game will typically fail to load and report the missing dependency. Either keep Canvas installed or remove the mod that requires it.
How do I turn off the blur, wobble or vignette effects?
Open Canvas's in-game settings screen. From there you can lower the strength of each screen effect or switch specific filters off completely, so you can keep the ones you like and disable the rest.
My screen randomly went gray, wavy or started pulsing. Is that a bug?
Usually not. Those are Canvas screen effects, such as Desaturate (gray), Wobble (wavy) and Heartbeat (pulsing, often tied to low health or action events). Another mod, a script or a server command is triggering them. If you find one too intense, turn it down or off in the Canvas settings screen.
What screen effects does Canvas include?
It comes with 9 ready-made effects. Among them are blur, vignette, chromatic aberration, heartbeat, film grain, desaturate and wobble. Each can be adjusted or disabled individually from the settings screen.
How do I add a custom skybox without coding?
Put the skybox's JSON files inside a resource pack and enable that pack. Canvas reads them automatically. Skies can mix cubemaps, gradients, floating sprites like planets or moons, and panoramas layered over the vanilla sky.
Why did the sun, moon and stars disappear?
When a custom skybox is active, Canvas smoothly fades out the vanilla sun, moon, stars and End sky so they don't clash with it. Disable the resource pack containing the skybox if you want the normal sky back.
Will Canvas hurt my FPS?
Screen shaders are post-processing effects, so stacking several at once can cost performance on weaker machines. If you notice slowdowns, open the settings screen and turn off the filters you don't need or lower their strength. You can also try a pack without heavy custom skyboxes.