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Mobile & games · #pixijs
Scene Graph Optimization The goal is to understand the performance impact of scene graph depth when applying visibility culling to a large sprite collection in PixiJS. Constraints The system uses standard sprite objects and relies on built-in culling mechanisms for version 7.x. What is the expected complexity of the culling traversal relative to scene depth?
Texture.from() checks PIXI.utils.TextureCache before creating a new texture, so a texture freed with destroy(true) can remain reachable through its URL or cacheId. The goal is to determine whether destroy(true) automatically removes the corresponding TextureCache and BaseTextureCache entries, or whether the application must remove them manually to prevent st
PIXI.Ticker’s delta computation is clamped to a maximum of 1/60 s when the event loop stalls, preventing a spiral of death but potentially desynchronizing game logic. This clamping is hard‑coded and not exposed to developers. When requestAnimationFrame is unavailable or disabled, the ticker falls back to setTimeout, introducing a 4 ms minimum granularity on
Integration Boundary: PixiJS Ticker and Page Visibility API Goal: Determine whether PixiJS should automatically pause its internal ticker when the page becomes hidden, to avoid unnecessary GPU and CPU usage while maintaining animation continuity when the tab is restored. Constraints: The ticker currently delegates to requestAnimationFrame , and developers of
Goal Render 20,000–50,000 similar entities (particles, tiles, or sprites) at 60 fps while allowing a small subset (≈1–5 %) to change their visual appearance at runtime by swapping to a different texture from the same atlas. Constraints and uncertainty Container preserves full per-sprite transform flexibility and lets any child change its texture freely, but
The PixiJS autoDetect method is designed to select the most capable rendering engine based on browser support. While it clearly prioritizes WebGL2, the specific logic governing the transition between WebGL1 and the Canvas renderer when WebGL2 is unavailable is not explicitly defined in the documentation. This ambiguity creates challenges when designing integ