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The Radeon™ Raytracing Analyzer (RRA)

The Radeon Raytracing Analyzer is a tool designed to help developers improve the raytracing performance on AMD Radeon 6000 and 7000 series GPU's. The tool focuses on the visualization of Acceleration Structures, which in our case consist of Bounding Volume Hierarchies. RRA allows the developer to visualize the bounding box hierarchies, and related scene geometries, to quickly identify issues with the bounding volume hierarchies, such as overlapping bounding volumes and sparse geometry layout within bounding volumes. Once identified, the developer can revisit their BVH generation strategy.

This document describes how the Radeon Raytracing Analyzer can be used to examine a bounding volume hierarchy.

Supported graphics APIs, RDNA hardware, and operating systems

Supported APIs

  • DirectX 12
  • Vulkan

Supported RDNA hardware

  • AMD Radeon RX 7000 series
  • AMD Radeon RX 6000 series

Supported Operating Systems

  • Windows® 10
  • Windows® 11
  • Ubuntu® 22.04 LTS (Vulkan only)

Radeon Raytracing Analyzer - Quick Start

Starting the Radeon Raytracing Analyzer

Start RadeonRaytracingAnalyzer.exe (this is the tool used to view RRA scene data).

How to load a scene

There are a few ways to load a scene into RRA.

  1. Use the "File/Open scene" pull down menu, or the "File/Recent scene" pull down menu item.
  2. Go to the "Welcome" view and click on the "Open a Radeon Raytracing Analyzer file…"
  3. Go to the "Welcome" view and click on a scene that you have previously loaded in the Recent list.

image

  1. Go to the Recent scenes view to see a full list of all your recent scenes.

Notice that there is additional information provided for each scene when viewed in this pane, such as the date when the scene was last accessed. It is also possible to remove recent scenes from the list using the "Remove from list" link button. Note that they will only be removed from the list; they won't be deleted from the file system. There is also a link button, "Open file location" to open the folder where that scene file is on the disk.

image

  1. Drag and drop an RRA scene file onto the Radeon Raytracing Analyzer executable, or onto an already open RRA instance.

The Radeon Raytracing Analyzer user interface

There are four main menus in the Radeon Raytracing Analyzer and each may have a number of sub-windows..

  1. START
    1. Welcome - Shows links to help documentation, and a list of recently opened scenes.
    2. Recent scenes - Displays a list of the recently opened scenes.
    3. About - Shows build information about RRA and useful links.
  2. OVERVIEW
    1. Summary - Gives an overview of the scene, showing the number of acceleration structures, the resources they use and their memory usage.
    2. Device configuration - Provides details of the GPU used to record the scene.
  3. TLAS
    1. Viewer - The main viewer for a top-level acceleration structure.
    2. Instances - Lists statistics for all instances referenced in the selected top-level acceleration structure.
    3. BLAS List - Lists statistics for all bottom-level acceleration structures referenced in the selected TLAS.
    4. Properties - Lists statistics and properties for the currently selected top-level acceleration structure.
  4. BLAS
    1. Viewer - The main viewer for a bottom-level acceleration structure.
    2. Instances - Lists statistics for all instances of the selected bottom-level acceleration structure.
    3. Triangles - Lists statistics for all triangles of the selected bottom-level acceleration structure.
    4. Geometries - Lists statistics for all geometries of the selected selected bottom-level acceleration structure.
    5. Properties - Lists statistics and properties for the currently selected bottom-level acceleration structure.
  5. RAY
    1. Dispatches - The main viewer for visualizing various types of dispatches that shot rays.
    2. Inspector - A viewer for inspecting rays and how they interact with the scene.

Settings

The settings tab is used to control global settings throughout the product. These settings are stored, and are persistent for all instances of RRA.

UI Navigation

In an effort to improve workflow, RRA supports keyboard shortcuts and back and forward history to quickly navigate throughout the UI.

Back and forward navigation

RRA tracks navigation history, which allows users to navigate back and forward between all of RRA’s panes. This is achieved using global navigation hotkeys shown above, or the back and forward buttons on all panes in the top left below the file menu.

Currently, back and forward navigation is restricted to pane switches.

The OVERVIEW windows

The TLAS windows

These panes show information about a top-level acceleration structure and its associated bottom-level acceleration structures.

The BLAS windows

These panes show information about a bottom-level acceleration structure.

The RAY windows

These panes allow dispatches and rays to be visualized.

DISCLAIMER

The information contained herein is for informational purposes only, and is subject to change without notice. While every precaution has been taken in the preparation of this document, it may contain technical inaccuracies, omissions and typographical errors, and AMD is under no obligation to update or otherwise correct this information. Advanced Micro Devices, Inc. makes no representations or warranties with respect to the accuracy or completeness of the contents of this document, and assumes no liability of any kind, including the implied warranties of noninfringement, merchantability or fitness for particular purposes, with respect to the operation or use of AMD hardware, software or other products described herein. No license, including implied or arising by estoppel, to any intellectual property rights is granted by this document. Terms and limitations applicable to the purchase or use of AMD’s products are as set forth in a signed agreement between the parties or in AMD's Standard Terms and Conditions of Sale.

AMD, the AMD Arrow logo, Radeon, Ryzen, RDNA and combinations thereof are trademarks of Advanced Micro Devices, Inc. Other product names used in this publication are for identification purposes only and may be trademarks of their respective companies.

DirectX is a registered trademark of Microsoft Corporation in the US and other jurisdictions.

Vulkan and the Vulkan logo are registered trademarks of the Khronos Group Inc.

Microsoft is a registered trademark of Microsoft Corporation in the US and other jurisdictions.

Windows is a registered trademark of Microsoft Corporation in the US and other jurisdictions.

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