Decima UI 🖥️, Riot 2XKO Shader 🎨, ARK Mods 🧩, UE5 Optimization 🚀

Oct 14, 2025

Graphics & Rendering Insights 🎨

How Decima Renders AAA Editor UI with Tiles and SDFs

Guerrilla’s tools programmer Wessel Mast breaks down how the Decima engine repurposes a tile-based renderer—normally used for light culling and SSAO—to draw complex editor UI efficiently. By using signed distance fields, Decima batches thousands of rectangles, lines, and curves into a single draw call while keeping crisp, anti-aliased results. The talk includes practical insights for building fast, scalable UI in game editors. Slides and the DevGAMM recording are available for deep dives.

Rolling Waves, Zero Simulation: Riot’s Procedural Vertex Shader for 2XKO

Riot Games reveals how 2XKO’s shore waves roll and barrel using a pure 3D vertex shader—no simulation or repetition. A UV-driven “linear wave,” modulo/frac masking, and a custom multi-vector Lerp drive 10 sculpted phases via virtual control points. Clean graph organization and powerful debug visualizers keep complex motion readable.

UE5 Debugging & Optimization 🐞⚙️

From Bug to Fix: Data-Driven Debugging in Unreal Engine

Thomas Sheppard shares Prismatic Studios’ practical workflow for diagnosing, validating, and resolving complex Unreal Engine issues without derailing production. Learn to gather the right data, spot patterns, and avoid assumptions, then confirm root causes with profiling and debugging tools. He wraps with risk-aware rollout strategies to minimize disruptions. Real UDN and client case studies anchor the approach in proven, shippable results.

Optimizing UE5 Per Platform: Epic Japan’s PC-to-Switch Playbook

Epic Games Japan shares production-proven strategies for shipping UE5 games across PC and Nintendo Switch. Recorded at Unreal Fest Bali 2025, the session focuses on tailoring performance and visual quality per platform using Unreal’s multi-platform toolset. Expect practical workflows and lessons learned from real domestic titles. Note: mobile scalability isn’t covered.

Unreal Pipeline: Animation to Mods 🛠️🚀

From Rig to Render: Mastering Unreal’s Animation Toolset

Animator John Fielding demonstrates a full in-engine animation pipeline in Unreal—no DCC roundtrips. Build modular control rigs with auto IK/FK matching, add per-shot spaces, and animate faster with pose libraries, tween sliders, layers, constraints, and motion trails. Get practical Sequencer and Curves tips (filters, stepped-to-spline flow, lattice scaling, Euler fixes) and render MP4 playblasts via Quick Render with camera cuts. A stress-free, real-time workflow from setup to final review.

How to Ship Mods on Unreal: DLC Plugins, IO Store, and Consoles

Mod.io’s head of engineering shares a practical, engine-change-free path to UGC in Unreal. Treat mods as DLC plugins, cook against named releases, and dynamically mount IO Store content while appending asset registries and shader caches. Learn data-driven patterns (mutators, primary assets), multiplayer load-order/versioning, and console workflows, plus validation commands and an open-source sample plugin.

Live Ops & Mod Ecosystems 📈🧩

Level Up Live Ops: Unity Releases 10-Part UGS Tutorial Series

Unity launched a 10-part UGS tutorial series pairing videos with written guides and scripts. Learn to integrate authentication (Unity, Facebook, Google Play Games, Apple Game Center), player data, economy, IAP, and rewarded ads—plus third‑party SDK steps. A full sample, Gem Hunter Match – Cloud Edition, is on GitHub to show everything in action. Videos roll out through October, with a hub post linking all articles.

360M Downloads: The Tech Behind ARK’s Console Mods

ARK: Survival Ascended turned PC mods into console-ready content, racking up 360M+ downloads across platforms. In this Unreal Engine session, Grove Street Games and Overwolf break down in-game mod discovery, console-grade security, and cross-platform pipelines. Learn how Zen Loader optimizes packaging and how user-generated patches ship safely—plus why premium brands like Power Rangers are joining. A practical playbook for studios building scalable, secure UGC ecosystems.

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