| Mode | Behavior | |------|----------| | Passive | Client waits for server to push updates. No local refresh timer. | | Active | Client polls server at fixed intervals (e.g., 30 fps). | | Hybrid | Combines push (for screen changes) and pull (for frame drops). |
Report ID: VFR-2026-04-21-001
Date: April 21, 2026
Author: [Your Name/System]
Subject: Analysis of Viewer Frame Refresh Mechanism
"Mode" refers to the operational state of the viewer. Common modes include: viewerframe mode refresh work
The chosen mode dictates how the system handles the work of refreshing.
The goal is minimizing latency while maximizing smoothness. | Mode | Behavior | |------|----------| | Passive
To assess the functionality, performance, and reliability of the viewer frame refresh mode under defined operating conditions.
When switching from manual to continuous mode while paused on a non-first frame, the viewer does not automatically refresh that current frame before starting the loop. The result is a brief stale display (1–2 frames into playback).
Severity: Medium The chosen mode dictates how the system handles
The concept of a "viewer" in software engineering typically refers to a substrate responsible for rendering graphical data to an output device. However, the ViewerFrame modality represents a specific state machine where the viewer operates not as a passive display, but as an active participant in the rendering loop.
The "Mode Refresh" is the mechanism by which the viewer detects staleness in the underlying data model and triggers a rasterization event. Unlike static rendering, where a scene is drawn once, the ViewerFrame mode must balance the computational cost of redrawing against the requirement for temporal accuracy. This paper posits that an efficient ViewerFrame refresh architecture must move away from polling-based models toward an event-driven invalidation paradigm.
In VR headsets, the viewer’s gaze point is rendered at full resolution, while the periphery is blurred. The refresh work is now non-uniform: high work in the center, low work at the edges.