Nvidia’s Auto Shader Compilation (ASC) is a beta feature designed to recompile cached shaders after driver updates for the same GPU model, aiming to reduce stutter caused by these updates but not addressing initial shader compilation stutter in new games. While currently limited and niche, ASC shows potential for future enhancements involving more universal shader caches, offline compilation, and crowdsourced data to improve shader management and gaming performance.
Nvidia recently introduced a beta feature called Auto Shader Compilation (ASC), which aims to improve shader management after driver updates. Unlike Microsoft’s advanced shader delivery and Intel’s solutions, Nvidia’s ASC focuses on reducing the need to recompile shaders when users update their GPU drivers. Specifically, after updating to driver version 595.97 or later, Nvidia’s app can recompile previously cached shaders from older driver versions to the current one, potentially reducing stutter caused by driver changes. However, ASC does not address the initial shader compilation stutter that occurs when playing a new game for the first time without any cached shaders.
The current implementation of ASC is quite limited and targets specific scenarios, such as games like Fortnite that experience shader compilation issues following driver updates. It works by scanning the Nvidia DX driver cache on the user’s system and recompiling shaders either passively or on user command. However, it does nothing for new games or games that have never been played on the system before, meaning it cannot prevent the initial stutter players often experience. This limitation makes ASC more of a niche solution focused on improving stability for ongoing games rather than eliminating shader stutter altogether.
Experiments with transferring shader cache files between different GPUs revealed that ASC’s shader caches are tied to specific GPU models. For example, transferring shader caches between the same GPU model (e.g., RTX 4060 to RTX 4060) helped reduce stutter, but transferring between different models (e.g., RTX 5090 to RTX 4070 Super) did not. This suggests that the shaders compiled by ASC are not universally compatible across different GPU architectures, limiting its usefulness for broader shader sharing. Despite this, the feature allows users to potentially share shader caches for the same GPU model, which could save bandwidth and improve performance after driver updates.
Looking ahead, the video discusses the potential for more advanced and flexible shader delivery systems. One idea is to adopt a method similar to Microsoft’s advanced shader delivery, which involves developers submitting large Shader Object Database (SODB) blobs that can be distributed and compiled locally on users’ machines. This approach could be more efficient and less reliant on cloud servers compared to Nvidia’s current system. Additionally, crowdsourcing shader compilation data from millions of users, as done by tools like Fossilize, could provide more complete shader caches, reducing stutter more effectively than relying solely on developer submissions.
In conclusion, Nvidia’s Auto Shader Compilation in its current beta form is a modest step toward improving shader management, primarily targeting shader recompilation after driver updates for specific GPU models. While it doesn’t solve the broader problem of initial shader compilation stutter for new games, it demonstrates Nvidia’s capability to control shader compilation processes. Future improvements might include more universal shader caches, offline compilation options, and leveraging crowdsourced data to create more robust and comprehensive shader delivery systems, potentially reducing stutter and improving gaming experiences across a wider range of titles and hardware.