Louis Bavoil

Louis Bavoil has been working in the Developer and Performance Technology group at NVIDIA since 2007, helping improve the GPU performance of DirectX games.
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Posts by Louis Bavoil

Content Creation / Rendering

Powerful Shader Insights: Using Shader Debug Info with NVIDIA Nsight Graphics

As ray tracing becomes the predominant rendering technique in modern game engines, a single GPU RayGen shader can now perform most of the light simulation of a... 7 MIN READ
Content Creation / Rendering

In-Game GPU Profiling for DirectX 12 Using SetBackgroundProcessingMode

If you are a DirectX 12 (DX12) game developer, you may have noticed that GPU times displayed in real time in your game HUD may change over time for a given... 4 MIN READ
Content Creation / Rendering

Identifying Shader Limiters with the Shader Profiler in NVIDIA Nsight Graphics

UPDATE: NVIDIA Nsight Graphics 2023.3 and later feature the new Real-Time Shader Profiler, the first temporal sampling profiler for GPU shaders. This profiler... 8 MIN READ
Simulation / Modeling / Design

Optimizing DX12 Resource Uploads to the GPU Using GPU Upload Heaps

This post was updated on May 19, 2023. How to optimize DX12 resource uploads from the CPU to the GPU over the PCIe bus is an old problem with many possible... 9 MIN READ
Simulation / Modeling / Design

Optimizing Compute Shaders for L2 Locality using Thread-Group ID Swizzling

As part of my GDC 2019 session, Optimizing DX12/DXR GPU Workloads using Nsight Graphics: GPU Trace and the Peak-Performance-Percentage (P3) Method, I presented... 5 MIN READ
Simulation / Modeling / Design

Using Nsight Systems for Fixing Stutters in Games

While working with game developers on pre-release games, NVIDIA has had a steady flow of bugs reported where a game stutters for multiple milliseconds during... 8 MIN READ