Performance Tips

intermediate performance

Edge Fusion (HDRP) · Troubleshooting & FAQ

Edge Fusion is GPU-driven. Follow these guidelines to balance visual quality against frame-rate cost in HDRP.

General Recommendations

Tip	Details
Use quality presets first	The Sample Count dropdown offers preset quality levels (Very Low to Ultra) that auto-configure Sample Count and Binary Search Steps. Start there, then fine-tune.
Keep Sample Count low	Use the lowest sample count that still gives acceptable visual quality. Every extra sample costs GPU time.
Limit Max Blend Distance	Set this to prevent blending on distant objects where the effect is imperceptible at screen resolution.
Lower Early Exit Hits	Reducing this value speeds up edge detection. The default of 5 is sufficient for most scenes.
Customize Blend Layers	Do not leave Blend Layers set to Everything. Exclude transparent objects, particles, UI, and any layer that does not need edge blending.
Disable Jitter when not needed	Jitter improves coverage but breaks GPU cache locality. Disable it if TAA is not active or if performance is critical.
Keep Jitter + low samples together	When using Jitter, lower sample counts work well because the randomized sampling covers more area per frame (requires TAA for smooth results).
Disable Intra-Object Fusion when not needed	Intra-Object Fusion is the single most expensive option. It adds per-pixel normal reconstruction to the ObjectID pass, fill pass, and blend pass, and forces RGBA32F textures (doubling bandwidth vs the default RG32F). Keep it disabled unless you need edge blending within a single mesh. If enabled, use Per-Object mode to restrict the cost to specific meshes.
Set Noise Intensity to 0 if unused	When Noise Intensity is above 0, every detected edge incurs a 3D texture sample. The cost is minor on desktop but worth disabling if you do not need organic edge variation.

Platform-Specific Notes

Platform	Recommendation
Desktop (PC/Mac)	Medium to Ultra quality presets. Most discrete GPUs handle 16–32 samples comfortably.
Console	Start with Medium preset. Profile with the platform's GPU profiler and adjust Sample Count and Max Blend Distance.

Was this page helpful? |