GpuShift 1.3.0 Beta 1

GPU Particle Layer v2

• Added a new experimental GPU particle renderer for Minecraft 1.21.1.
• Particle movement, gravity, fading and billboard calculations are now handled by the GPU.
• Added AUTO, V2 and VANILLA backend modes.
• Smoke, ash and suspended particles can use the new renderer.
• Unsupported, modded or incompatible particles automatically fall back to vanilla rendering.
• Pretty Rain, FBP, weather, leaves and campfire smoke remain vanilla.
• Unsupported GPUs and shader errors safely disable V2 without crashing.
• SAFE mode disables V2 with Iris/Oculus, while FORCE allows experimental testing.

Bottleneck Detector

• Added automatic detection of CPU-bound and GPU-bound situations.
• Adaptive Mode can now adjust particle, entity and block-entity budgets based on the detected bottleneck.
• GPU timing is asynchronous and does not wait for the GPU.

UI

• Added GPU backend selection.
• Added Bottleneck Detector toggle and status.
• Debug overlay now shows GPU particle instances, fallback count, draw calls, CPU/GPU frame time and bottleneck state.

Benchmark

Compared with stable 1.2.5:

• Average FPS: 140.75 vs 140.37
• p95 frame time: 9.29 ms vs 9.53 ms
• p99 frame time: 10.95 ms vs 11.78 ms
• 1% Low: 39.77 FPS vs 36.79 FPS

Average FPS is effectively unchanged, while heavier frame-time spikes and 1% Low performance improved.