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haliumqsgcontext

A Qt Scene Graph plugin for better hardware integration

General info

This plugin allows for tighter integration of Qt and Halium-based distributions.

  • Uses Android's GraphicBuffer to upload textures to the GPU, using multiple threads
  • Exposes those GraphicBuffers to OpenGL as any other texture
  • Replaces the default QAnimationDriver with a solely VSync-based one

Usage

Enable the plugin by exporting QMLSCENE_DEVICE=haliumqsgcontext in the environment.

Tweaking the settings

There are a handful of libdeviceinfo settings that allow adjusting the behavior of haliumqsgcontext.

  • HaliumQsgUseShaders (default: true): Determines shader-based swizzling, falling back to Qt for texture uploads
  • HaliumQsgAnimationDriver (default: true): Enable or disable the custom QAnimationDriver