November 6, 2019 update:
  • There's a new open source Cardboard SDK for iOS and Android NDK that offers a streamlined API, improved device compatibility, and built-in viewer profile QR code scanning. A corresponding Unity package (SDK) is planned for a future release. We recommend that all developers actively building for Google Cardboard migrate (iOS, Android NDK) to the new Cardboard SDK.
October 15, 2019 update:
  • The Daydream View VR headset is no longer available for purchase. However, you can continue to use the existing Google VR SDK to update and distribute your apps to the Google Play Store, and make them available to users in the Daydream app.

GAPID (Graphics API Debugger)

GAPID is a Graphics API Debugger.

Use GAPID to diagnose GPU issues when developing graphical applications.

GAPID lets you capture, inspect, and adjust traces of your app's graphics driver calls. This helps you to:

  • Identify rendering issues, such as missing objects or object size and texture problems.
  • Inspect the resources loaded by the graphics API.
  • Make adjustments to resources like shaders or commands and observe the results live.

Supported platforms and APIs

Android Windows macOS Linux
OpenGL ES Trace
OpenGL ES Replay
Vulkan Trace
Vulkan Replay
(Must be performed on the same device used to trace)

The GAPID interface

The GAPID interface lets you analyze resources and commands when investigating issues.

Rendering context and frames
Select a rendering context to see frames in a film-strip view.

Commands
Review graphics API calls made by the application, grouped by frame and draw call or by user markers.

Framebuffer
Pinpoint the source of rendering errors by viewing the contents of the currently bound framebuffer.

Geometry
View the pre-transformed mesh of a selected draw call. Rotate or zoom in on the model. Change the rendering mode to investigate issues or export a model as an .obj file.

Textures
See all of the texture resources created up to and including a selected command.

Shaders
View and iterate on shaders in your application. See all:

  • Shaders created by the program
  • Linked Vertex/Fragment programs
  • Bound uniform values

Edit your shaders and see the results directly within GAPID.

Report
Review a log of issues, including incorrect API usage or problems that GAPID encounters while replaying your graphics trace.

State
See the driver state immediately after executing a selected command.

Download and start using GAPID