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Fire/Flame Shader Breakdown (Cyanilux)

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Cyanilux

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Description

Fire/Flame Shader Breakdown is a free Cyanilux article (updated Oct 2023) that builds billboard fire in Unity Shader Graph on one quad, avoiding overdraw from stacked transparent particle sprites.

The graph scrolls Simple Noise to warp UVs vertically, with strength scaled by UV.y. It covers a texture path (Kenney flame plus HDR tint) and an Ellipse/Posterize procedural path, plus random per-instance offsets, vertex billboarding, and a candle wobble variant.

For intermediate users comfortable with URP Shader Graph and transparent Unlit surfaces. The intro explains transparent back-to-front blending versus opaque z-testing and notes VR/mobile profiling.

Cyanilux's step-by-step layout uses annotated node screenshots; the page is free with no account. The technique echoes RiME-style UV warping and fits torches, spells, or quads, trails, and particle billboards.