Use this virtual-reality calculation for a first-order display, optics, tracking, rendering, or latency estimate when all stages and units are explicitly defined.

Full Resolution Pixel Work (pixels)

Required number in pixels.

Foveated Pixel Work (pixels)

Required number in pixels.

The cited overview of Virtual reality supplies background for the terminology and domain context used by this tool.^[1]

Ideal pixel-work reduction factor from full-resolution pixel workload divided by foveated workload; not measured FPS gain. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Pixel Work Reduction Factor

Returned number.

• Lens calibration, per-eye geometry, display scanout, asynchronous pipelines, tracking filters, workload variation, user anatomy, and device firmware can make measured VR behavior differ from a serial model.
• Full Resolution Pixel Work must be at least 0.
• Foveated Pixel Work must be at least 0.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Validate the estimate on the target headset with calibrated motion, optical, frame-timing, and latency measurements under a representative workload.

• Dynamic Resolution Scale Factor

  Uniform linear render-scale factor needed for a target pixel budget relative to base resolution.

• Super Sampling Factor

  Rendered pixel area divided by native panel pixel area for one eye.

• Distortion Correction Factor Calculator

  Compute the per-pixel radial correction factor 1 + k1·r² + k2·r⁴ used to undistort headset lens output.