Holoviz vsync

Authors: Holoscan Team (NVIDIA)
Supported platforms: x86_64, aarch64
Last modified: March 18, 2025
Language: C++
Latest version: 1.0.0
Minimum Holoscan SDK version: 2.3
Tested Holoscan SDK versions: 2.3
Contribution metric: Level 1 - Highly Reliable

This application demonstrates the capability of the Holoviz operator to wait for the vertical blank of the display before updating the current image. It prints the displayed frames per second to the console, if sync to vertical blank is enabled the frames per second are capped to the display refresh rate.

To enable syncing to vertical blank set the vsync parameter of the Holoviz operator to true:

    auto holoviz = make_operator<ops::HolovizOp>(
        "holoviz",
        // enable synchronization to vertical blank
        Arg("vsync", true));

By default, the Holoviz operator is not syncing to the vertical blank of the display.

Run Instructions

To build and start the application:

./dev_container build_and_run holoviz_vsync