For the entire usage use

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  • SPDX-License-Identifier: Apache-2.0
  • Licensed under the Apache License, Version 2.0 the "License";
  • you may not use this file except in compliance with the License.
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//// = Vulkan Samples // omit in toc :pp: {plus}{plus} ifndef::site-gen-antora[] :toc: endif::[]

image::banner.jpg[Vulkan Samples banner]

ifndef::site-gen-antora[] == Vulkan Documentation Site

Documentation for the samples is best viewed at the new link:https://docs.vulkan.org/samples/latest/README.html[Vulkan Documentation Site]. The documentation uses AsciiDoc which isn't fully supported by github.

endif::[]

== Introduction

The Vulkan Samples is collection of resources to help you develop optimized Vulkan applications.

If you are new to Vulkan the xref:samples/api/README.adoc[API samples] are the right place to start. Additionally you may find the following links useful:

ifdef::site-gen-antora[]

  • xref:guide:ROOT:index.adoc[Vulkan Guide]
  • xref:tutorial:ROOT:00_Introduction.adoc[Get Started in Vulkan] endif::[]

ifndef::site-gen-antora[]

xref:samples/performance/README.adoc[Performance samples] show the recommended best practice together with real-time profiling information. They are more advanced but also contain a detailed tutorial with more in-detail explanations.

=== Requirements

The samples are written in C{pp} and require a compiler that supports at least C{pp}20. To run the samples, a device that supports at least Vulkan 1.1 or newer is required. Some samples might require a higher Vulkan version and/or support for certain extensions.

=== Goals

  • Create a collection of resources that demonstrate best-practice recommendations in Vulkan
  • Create tutorials that explain the implementation of best-practices and include performance analysis guides

== Samples

  • xref:./samples/README.adoc[Listing of all samples available in this repository]

== General information

  • Project Basics ** xref:./docs/misc.adoc#controls[Controls] ** xref:./docs/misc.adoc#debug-window[Debug window] ** xref:./scripts/README.adoc[Create a Sample]
  • Vulkan Essentials ** xref:./samples/vulkan_basics.adoc[How does Vulkan compare to OpenGL ES? What should you expect when targeting Vulkan?]
  • Misc ** xref:./docs/misc.adoc#driver-version[Driver version] ** xref:./docs/memory_limits.adoc[Memory limits]

== Setup

Prerequisites: https://git-scm.com/downloads[git] with https://docs.github.com/en/repositories/working-with-files/managing-large-files/installing-git-large-file-storage[git large file storage (git-lfs)].

Clone the repo with submodules using the following command:

git clone --recurse-submodules https://github.com/KhronosGroup/Vulkan-Samples.git cd Vulkan-Samples

Follow build instructions for your platform below.

[NOTE]

The full repository is very large, and some ISPs appear to have trouble providing a robust connection to github while the clone is being made.

If you notice problems such as submodules downloading at reported rates in the tens of kB/s, or fatal timeout errors occurring, these may be due to network routing issues to github within your ISP's internal network, rather than anything wrong in your own networking setup.

It can be very difficult to get ISPs to acknowledge such problems exist, much less to fix them.

One workaround is to switch the repository to use ssh protocol prior to the submodule download, which can be done via e.g.

[source,sh]

git clone git@github.com:KhronosGroup/Vulkan-Samples.git cd Vulkan-Samples perl -i -p -e 's|https://(.*?)/|git@\1:|g' .gitmodules git submodule sync git submodule update

While this can be a good alternative if you are running into this connection issue, you must have GitHub ssh key authentication setup to use ssh protocol - see link:https://docs.github.com/en/authentication/connecting-to-github-with-ssh[Connecting to GitHub with SSH] for details. So it is a not a solution we can implement as the repository default.

Another option which may help is to run github through a VPN service.

== Build

=== Supported Platforms

  • Windows - xref:./docs/build.adoc#windows[Build Guide]
  • Linux - xref:./docs/build.adoc#linux[Build Guide]
  • Android - xref:./docs/build.adoc#android[Build Guide]
  • macOS - xref:./docs/build.adoc#macos[Build Guide]
  • iOS - xref:./docs/build.adoc#ios[Build Guide]

== Usage

The following shows some example command line usage on how to configure and run the Vulkan Samples.

Make sure that you are running the samples from the root directory of the repository. Otherwise the samples will not be able to find the assets. ./build/app/bin///vulkan_samples

For the entire usage use

vulkan_samples --help

For subcommand usage use

vulkan_samples <sub_command> --help

Run Swapchain Images sample

vulkan_samples sample swapchain_images

Run AFBC sample in benchmark mode for 5000 frames

vulkan_samples sample afbc --benchmark --stop-after-frame 5000

Run compute nbody using headless-surface and take a screenshot of frame 5

Note: headless-surface uses VK_EXT_headless_surface.

This will create a surface and a Swapchain, but present will be a no op.

The extension is supported by Swiftshader(https://github.com/google/swiftshader).

It allows to quickly test content in environments without a GPU.

vulkan_samples sample compute_nbody --headless-surface --screenshot 5

Run all the performance samples for 10 seconds in each configuration

vulkan_samples batch --category performance --duration 10

Run Swapchain Images sample on an Android device

adb shell am start-activity -n com.khronos.vulkan_samples/com.khronos.vulkan_samples.SampleLauncherActivity -e sample swapchain_images

== License

See link:LICENSE[LICENSE].

This project has several xref:./third_party/README.adoc[third-party dependencies]

This project uses assets from https://github.com/KhronosGroup/Vulkan-Samples-Assets[vulkan-samples-assets]. Each one has its own license.

=== Trademarks

Vulkan is a registered trademark of the Khronos Group Inc.

== Contributions

Donated to Khronos by Arm, with further contributions by Sascha Willems and Adam Sawicki. See xref:CONTRIBUTORS.adoc[CONTRIBUTORS] for the full contributor list.

Also see xref:CONTRIBUTING.adoc[CONTRIBUTING] for contribution guidelines.

== Related resources