Decals can make your scenes look premium and still push you into a frame-time cliff if you choose the wrong technique. Visual juice is great until per-frame cost starts bleeding your budget.
You compare the major Unity paths side by side: classic Built-in Projector behavior that is flexible but scales poorly, blob/raycast-style approaches with recurring per-frame cost, URP DBuffer and Screen Space workflows, and when real-time decal stamping lets you avoid paying every frame for static results.
Concrete next step: profile one representative scene, compare draw calls and frame cost across methods, and test stamping for non-changing decal use cases before committing production content.
CEO/Producer translation: this avoids shipping a visual feature that silently multiplies rendering cost as the project grows.
Unlock the full Decals module now and choose the decal path that gives you impact without a long-term rendering bottleneck.
In this module:
- 1. Decals: Fast & Furious
- 2. BIRP Projector
- 3. Blob Raycasting
- 4. URP Decals: DBuffer Method
- 5. URP Decals: Screen-Space Method
- 6. Decal Stamping with Compute Shaders
- Q&A
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