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32 quick stories on the rack · #graphicsHow Game Engines Fake Volumetric Light Beams
Game engines use clever shortcuts to fake god rays and light shafts. Here's exactly how they decide what to ca…
How Game Engines Decide Which NPCs to Simulate
Game crowds use a layered LOD system to fake thousands of characters without melting your GPU. The seams are i…
Why Game Engines Delete Your Bullet Holes
Decals vanish under memory pressure, not on a timer. Engines run a quiet cost-benefit calculation, age, distan…
How Games Fake Infinite Mirror Reflections
Games can't render true infinite mirror loops. The trick engines use to decide where to stop is more interesti…
How Game Engines Fake Water Caustics
Real-time water caustics would melt any GPU if done honestly. This is the approximation trick engines actually…
Game Engines Animate Wind-Blown Trees Without Physics
Vertex shaders, painted weights, and invisible wind zones do the heavy lifting, no physics simulation required…
Game Engines Fake Grass Animation Brilliantly
No game simulates every blade of grass. Engines use culling, sine waves, and LOD tricks to fool your eyes at a…
Game Engines Blending Overlapping Character Animations
Sprinting and reloading at once? The engine splits the skeleton, weights dozens of joints, and outputs one pos…
Why Game Engines Struggle to Render Transparent Surfaces
Transparency in 3D games breaks in specific, predictable ways. The sorting tricks engines use, and why none of…
Why Game Engines Split UI and Scene Frame Budgets
Game engines give UI and 3D scenes separate rendering budgets, a mechanical choice that keeps menus crisp and …
How Game Engines Recalculate Shadows When a Light Moves
Moving one torch can cost your GPU almost nothing or eat half your frame budget. The shadow-recalculation logi…
Game Engines Fake Most Particle Collision Physics
Those sparks bouncing off walls never touched one mathematically. A look at the layered tricks keeping explosi…