2026.05 - On-Tile Post-Processing for Mobile & XR

Unity 6.3 adds On-Tile Post-Processing to URP for a narrow but useful mobile/XR case. Instead of treating the frame like a big texture and bouncing it through external memory, the effect can stay on the tile when the hardware and render path support it. That matters most on tile-based GPUs, where full-screen stores, loads, blits, and sampled intermediates can cost more than just frame time—they can also add heat, battery drain, and thermal throttling.

The article’s practical advice is to use Vulkan, disable the built-in post stack, add the On Tile Post Processing renderer feature, and only enable effects the path actually supports. The safe list is small: color adjustments, tonemapping, vignette, film grain, and similar work. Bloom, depth of field, motion blur, and chromatic aberration still need broader image access and will usually fall back to the expensive route. The big takeaway is that this is less about “free polish” and more about giving artists a controlled budget for visual...