DirectX vs OpenGL Normal Maps: Unreal Engine and Unity Explained
Why your normal map looks inverted, which format Unreal Engine and Unity expect, and three ways to fix the green channel.
The blog
Tutorials, devlogs & game design
Practical articles written while building real Unreal Engine and Unity projects: texture workflows, game design with real numbers, Steam launch guides and honest devlogs.
Steam Capsule Art Sizes and Rules (2026 Guide)
Every Steam store, library, event and icon image size, the rules Valve enforces on capsule art, and tips for capsules that get clicked.
Unity vs Unreal Coordinate Systems: Axes, Units and Rotations
How Unity and Unreal Engine differ in axes, units and rotation order, the exact formulas to convert positions, rotations and scale, and common pitfalls.
Texture Channel Packing: Unreal ORM vs Unity Mask Maps
What channel packing is, the exact channel layouts for Unreal ORM, Unity URP and Unity HDRP, why Unity uses smoothness, and the import settings that matter.
How to Balance the Economy in a Shop Simulator Game
A practical guide to pricing, profit margins, customer demand, expenses and upgrade pacing for shop, supermarket and tycoon games, with real numbers.
Welcome to Tvashta Studio
What Tvashta Studio is, the 12 free tools you can use today, what we write about, and the Unreal Engine plugin we are building first.