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Visualize.

Analyze.

Optimize.

Available as part of the Radeon™ Developer Tool Suite.

RRA BLAS

Meet the Radeon™ Raytracing Analyzer (RRA) tool. Investigate the performance of your ray tracing applications and highlight potential bottlenecks.

Download now - v1.3

Download RRA (Windows®)
Download RRA (Linux®)
View RRA on GitHub
Read the RRA docs

This release adds the following:

  • Addition of a RAY tab, to enable the ability to visualize dispatches and individual rays.
  • Ray Dispatches pane added to visualize ray dispatches and allow selection of pixels within those dispatches.
  • Ray Inspector pane added to visualize individual rays and their collisions with scene objects.
  • Reset button added to TLAS/BLAS viewer panes and Inspector pane to reset the UI to its default settings.
  • Allow viewer UI state to be persistent between RRA sessions via a checkbox in the general settings.
  • Bug/stability fixes.

Benefits

By using either geometry mode or traversal mode in addition to a selection of coloring modes, RRA allows you to easily spot areas of interest in your scene that need optimizing.

RRA generates easy to understand visualizations of how your DirectX®12 and Vulkan® ray-tracing applications can be optimized. As with all the tools, capturing the ray-tracing content of a game is both quick and simple, using the Radeon™ Developer Panel and our public GPU driver.

To help get you started, we’ve produced a short video and blog post to show you what you need to do:

Assess your acceleration structures

Get a high level view of your acceleration structures.

See how many TLAS and BLAS objects you are using, how large the acceleration structures are, and how much memory they are consuming.

Visualize the scene

Use the TLAS viewer to visually inspect your scene. Select from a number of coloring modes to highlight areas of interest. See opaque/non-opaque geometry at a glance and a host of other parameters.

Some coloring modes use a range of colors in a heatmap (the surface area heuristic modes, for example) making it easy to see hotspots.

Review your ray traversals

Switch to the traversal counter rendering mode to see how rays interact with your scene.

The heat map image will show areas that require attention. Generally the more red an area, the greater the counter number. The counter types can be selected to show instance hit, box hit/miss, triangle hit/miss and more.

Inspect those instances

A list of all of the instance in the TLAS is available. A separate table is available for instances of a particular BLAS.

Blast through your BLASes

Here, you can see high level statistics for every BLAS in your scene, including things such as memory usage and triangle counts.

All the tables in RRA, like the other tools, have column sorting and text searching so it’s easy to find what you’re looking for.

Double-clicking on a BLAS will display it in the BLAS viewer, almost identical to the TLAS viewer but allows inspection of a single BLAS.

Reveal your ray dispatches

Starting with v1.3, RRA now gives you the ability to see individual rays and how they interact with the scene, showing intersections, misses and the shaders called on those rays, including additional rays generated from the initial ray.

Select a “pixel” from the table or heatmap ..

.. and see the rays that are shot from that pixel.

Requirements

Supported GPUs

  • Radeon™ RX 6000 series
  • Radeon™ RX 7000 series

Supported graphics APIs

  • DirectX® 12
  • Vulkan®

Supported OSs

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

Required driver

Version history

  • Ray face culling flags added to traversal viewer pane.
  • Geometry list sub-tab added to BLAS tab.
  • Addition of an instance mask to the TLAS viewer pane.
  • Addition of a histogram to the traversal mode viewer side pane.
  • Bug/stability fixes.
  • Addition of an axis-free camera.
  • Camera placed at 45 degrees above the scene on trace load.
  • Support for rebraided instances:
    • Coloring mode to show which instances are rebraided.
    • Allow selection of rebraided siblings.
  • Support for split triangles:
    • Improved selection.
    • Coloring mode to show which triangles are split.
    • Sibling triangles shown and selectable from the UI.
  • The ‘Frustum cull ratio’ in the settings has been replaced with “Small object culling”. This should be more intuitive.
  • Additional fields added to the instance and triangles tables.
  • Keyboard shortcuts added for all panes on the Welcome and Settings lists. Some keys have also been remapped to avoid conflict with the Adrenaline software.
  • Bug/stability fixes.
  • This is the first public release of the Radeon Raytracing Analyzer
  • Visualize bounding volume hierarchies (BVHs).
  • Show BVH memory usage, instance and triangle counts, and a whole host of other useful statistics.
  • Analyze the application environment, using different rendering and coloring modes.

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