2D Vehicles

Xreal's Aura and Meta's VR Glasses hands-on: similar compute puck, lightweight design, and price, but Aura uses optical see-through lenses suitable for walking (Boone Ashworth/Wired)

Xreal's long-hyped Aura glasses arrive soon for $1,279. Here's how they fare against Meta's recently announced VR Glasses.

3d ago ·wired.com

Row vs. Column: Measuring Locality with csperf

Why this lesson exists Locality is often taught as a theoretical concept: row‑major arrays are faster than column‑major ones because the CPU cache lines are contiguous.

• Benchmarks compiled with same optimization flags, JSON artifacts contain detailed metrics.
• Diffing JSON files generates CSV highlighting layout performance differences on specific machines.

3d ago ·dev.to

My macOS virtual mic driver is Apple's sample code. The hard part was a slider that did 0.00 dB

The Compression slider in my app moved the output by exactly 0.00 dB. Not "a bit too little". Zero, at two of three input levels, on real presets, and none of my existing checks caught it.

• Compression slider maintained output at 0.00 dB
• Bug persisted despite author's attempts to fix
• Resolution required five rounds of development

3d ago ·dev.to

GPUParticles2D vs CPUParticles2D in Godot 4 — which and when

You open the Add Node dialog, type "particles", and Godot 4 offers you two nodes that look identical in the viewport: GPUParticles2D and CPUParticles2D .

3d ago ·dev.to

The Third Leg of the Parity Test

Months ago, a commenter on this series proposed a test: if the same backend really stands behind both doors, then auth, error behavior, and idempotency must be preserved across them.

• The third parity test leg focuses on preserving auth, error behavior, and idempotency across doors.
• Agents trigger retries based on timeouts, ambiguous errors, truncated responses, and failed calls.
• The MCP protocol allows second-order retries, serving as a control case to demonstrate failure mode.

3d ago ·dev.to