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RenderTiming plugin for Unity

This plugin employs the OpenGL timer query extension (GL_EXT_disjoint_timer_query) to provide accurate GPU time measurements in real-time to apps made with the Unity game engine. Notably this works on mobile devices and has virtually no overhead.

Typical use cases include:

  • adding GPU frame time to an app's real-time debug overlay
  • getting instant, in-app feedback on coding changes which affect rendering, as well as visibility into performance regressions and problematic views
  • automated performance testing

Caveats

  • only Android is supported (adding other GL platforms is straightforward)
  • quality varies among mobile implementations of GL_EXT_disjoint_timer_query. Notably, some GPU's (e.g. Mali) don't provide a useful measurement at all.
  • only GLES3 graphics API is supported, not GLES2 or Vulkan (adding GLES2 support is straightforward)
  • plugin does not verify GL_EXT_disjoint_timer_query existence yet

Unity versions tested: 5.4 and 5.6

GPU's tested: Snapdragon 821 (Adreno 530), Snapdragon 835 (Adreno 540)

Quick start

  1. download the latest RenderTiming Unity package and import it into your Unity project
  2. add the RenderTiming component to a suitable singleton object in your scene
  3. reference RenderTiming.instance.deltaTime from your in-app debug overlay, etc.

By default it will log GPU time to console once per second. Disable via component's "Log Timing" field in the inspector.

It will measure GPU time from the end of Update until the end of frame rendering. (I.e. encompassing both eyes for VR stereo case.) See RenderTiming.cs source for additional caveats.

Directory

Disclaimer

This project is not an official Google project. It is not supported by Google and Google specifically disclaims all warranties as to its quality, merchantability, or fitness for a particular purpose.