Nsight Graphics 2025.3

NVIDIA® Nsight™ Graphics 2025.3 is released with the following changes:

New Features:

  • Graphics Capture
    • This second beta release of Graphics Capture includes many feature updates and bug fixes. Please refer to the 2025.2 release notes for the announcement of this new activity.
    • New Graphics Capture Debugger Texture Inspector features:
      • The inspector now includes standard controls for adjusting color display in the viewer. Floating-point formats also have tonemapping options.
      • A histogram is available for understanding data distribution.
      • Utilize a format selector to customize data visualization. You may also write your own shader to customize the data visualization.
    • Added a Memory Viewer
      • View device memory alongside resources that are placed within that memory.
      • Navigate to individual resources for deeper inspection.
    • Added partial support for RTX Mega Geometry in Vulkan, via the VK_NV_cluster_acceleration_structure extension.
      • Applications that make use of cluster acceleration structures in Vulkan can be captured and replayed.
      • Utilize the Ray Tracing Inspector to visualize an applications cluster acceleration structure.
    • Added support for Playback of DirectStorage.
      • Applications that utilize DirectStorage features in frame will now have these operations faithfully replayed.
      • View DirectStorage calls and data in the Graphics Capture Debugger
  • GPU Trace
    • GPU Trace now displays information about Vulkan Video workloads. Vulkan Video Encode and Decode events are shown on the timeline under Encode or Decode queues, and also shown in the Event List and Event Details view. The specific Vulkan extensions supported are VK_KHR_video_queue, VK_KHR_video_decode_queue, and VK_KHR_video_encode_queue.
    • CUDA-In-Graphics (CIG) in Vulkan applications is now supported in GPU Trace. In this mode the CUDA context resides in the same hardware context as Vulkan. (CIG for D3D12 was already supported.)
  • Shader Debugger
    • There is a new System Information view that will give you key information about your current system setup and hints on changes that may be needed for the best debugging experience.

Improvements:

  • General
    • The Documents window now minimizes itself to the taskbar when an activity is launched.
  • Shader Profiler
    • Display settings related to the Active Threads Per Warp Histogram (introduced in 2024.3) have been improved thanks to your feedback. The histogram now only shows by default in the Shader Pipelines view, and has been renamed to “Approx. Active Threads Per Warp.” Correlation of the Active Threads Per Warp to individual lines of code is not guaranteed when there is more than one warp running in an SM subpartition during a sampling interval, so the column has been hidden by default in the Shader Source, Top-Down, and Bottom-Up views.
  • Graphics Debugging
    • Event markers that begin and end on separate command lists are now drawn as continuous regions in the Scrubber. This simplifies the display of captures from some game engines, such as Unreal.
    • The Acceleration Structures list in the Ray Tracing Inspector now has a toggle called “Filter To Highlight”. This can be used to identify by name the acceleration structures meeting certain criteria. For example you can find all structures that have “No Opacity Micromaps”, which is helpful when converting a scene to use OMM’s.
  • Graphics Capture
    • The Graphics Capture HUD now matches the look and feel of the GPU Trace HUD. The position of the HUD can be cycled by pressing Shift-F11, and its initial position can be set in the Start Activity settings.
  • Shader Debugger
    • Added support for filtering the GPU that the host is running on when enumerating the Vulkan devices. This should help when running the debugger locally, to ensure the target application runs on a different GPU than the host.
    • Together with the latest R575 drivers, you will see improved symbolics support when debugging ray tracing shaders.
    • Improved the performance of populating the Warp Info view, which should make stepping and continuing faster.
    • Improved the performance of fetching the data from various buffers in the Focus Picker.

Deprecations:

  • This will be the last release with support for Ubuntu 20, which ends Standard Support from Canonical on May 31, 2025. As always, Nsight Graphics may still run on unsupported Linux distributions, however we cannot guarantee compatibility or support outside of the listed distributions.

Known Issues:

  • GPU Trace
    • On Ubuntu 20 and Rocky 9, the Trace Analysis feature in GPU Trace is not available.
  • Shader Debugger
    • Using Shader Execution Reordering (SER) with the shader debugger is not currently supported due to a lack of debug information. This will be supported in a future driver release.

For more details and known issues, please see the full release notes!

For an overview of Nsight™ Graphics and access to resources, please visit the main Nsight™ Graphics page.

NVIDIA® Nsight™ Graphics 2025.3 is available for download under the NVIDIA Registered Developer Program.

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