CrossGL Surface Clock: Ultimate Setup & Installation Guide
Overview
CrossGL Surface Clock is a lightweight, touch-optimized desktop clock application built on CrossGL (a cross-platform OpenGL wrapper). It displays an accurate, customizable clock directly on your desktop or lock screen, supports themes, touch gestures, and low-GPU rendering for minimal performance impact.
System requirements (assumed)
- OS: Windows 10 or later (desktop-focused); may support Linux/macOS with CrossGL-compatible runtime.
- CPU: Dual-core or better.
- GPU: OpenGL 2.1+ compatible or equivalent.
- RAM: 2 GB minimum.
- Storage: <100 MB.
Pre-installation checklist
- Ensure GPU drivers are up to date.
- Close other heavy graphical apps during installation.
- Back up any existing desktop widgets or clock configuration files (if present).
Installation — Windows (presumed primary platform)
- Download the installer from the official distribution (EXE) or GitHub release.
- Right-click the installer → Run as administrator.
- Follow prompts: accept license, choose install path, select optional components (themes, language packs).
- Allow firewall access if prompted (for any network sync features).
- Finish and launch CrossGL Surface Clock.
Installation — Portable / ZIP (alternate)
- Download ZIP release.
- Extract to a folder (e.g., C:\Apps\CrossGLSurfaceClock).
- Run the executable directly.
- Create a shortcut in the Start Menu or Startup folder to run at login.
First-run setup
- Grant any OS permission requests (overlay, accessibility for lock-screen display).
- Choose a default theme and ⁄24-hour format.
- Configure position: docked corner, centered overlay, or full-surface.
- Enable or disable touch gestures and animations for performance.
Configuration & customization
- Themes: Select built-in themes or import .cgltheme files.
- Colors & Fonts: Adjust accent color, primary/secondary text color, and font size.
- Widgets: Add date, world clocks, alarms, timers, and battery indicator.
- Gestures: Two-finger swipe to reveal settings, pinch to resize.
- Transparency & Always-on-Top: Set opacity and toggle top-most window.
- Sync & Time Source: Use system time by default; optional NTP server configuration for higher accuracy.
- Startup behavior: Toggle start with OS, minimize to tray, or start hidden.
Performance tips
- Use low-power theme and disable animations on older GPUs.
- Limit refresh rate (e.g., 1 Hz for second-less displays).
- Use hardware acceleration when available; otherwise enable software rendering fallback.
- Set GPU priority to normal in Task Manager if needed.
Common issues & fixes
- Clock not showing: Ensure app is running and not minimized to tray; check Always-on-Top.
- Incorrect time: Verify system time and timezone; enable NTP sync.
- High CPU/GPU usage: Disable animations, reduce update frequency, switch to a simpler theme.
- Overlay blocked on lock screen: Grant accessibility/overlay permissions or enable lock-screen display in settings.
- Touch gestures not responsive: Verify touch drivers and enable gesture support in settings.
Updating & uninstalling
- Update: Use in-app updater or download latest release from the project page. Back up settings before major updates.
- Uninstall (Windows): Settings → Apps → CrossGL Surface Clock → Uninstall, or run uninstaller from installation folder. Remove leftover config in %APPDATA%\CrossGLSurfaceClock if desired.
Advanced (for power users / developers)
- Command-line flags: –theme , –position
, –start-hidden. - Config file: JSON at %APPDATA%\CrossGLSurfaceClock\config.json for manual edits.
- Plugin system: Drop plugins in /plugins folder; restart app to load.
- Building from source: Requires CrossGL SDK, CMake, and an OpenGL-capable toolchain.
Quick checklist (post-install)
- Verify correct time and timezone
- Set preferred theme and size
- Enable startup behavior if desired
- Test touch gestures and lock-screen display
- Create backup of config