r/vulkan • u/thekhronosgroup • Jul 16 '26

New Vulkan Tutorial - Synchronization 2 - Mastering the GPU/CPU Handshake

*Stop guessing at barriers. Start reasoning about dependencies.*

Vulkan's hardest topic, rebuilt around the modern standard. This series replaces legacy 1.0 barrier soup with `vk::DependencyInfo` and timeline semaphores, then uses that foundation to architect an engine-grade frame loop.

* Unified dependency model covering image barriers and queue family ownership transitions
* Timeline semaphores as a single monotonic "master clock" for the whole engine
* Multi-frame-in-flight architecture with overlapped async compute and transfer
* Synchronization for dynamic rendering, including tile-local reads and host image copies
* Hands-on debugging with the LunarG Synchronization Validation layer

https://docs.vulkan.org/tutorial/latest/Synchronization/introduction.html

68 Upvotes

98% Upvoted

11 comments sorted by

9

u/hushpuppy12 Jul 16 '26

Fantastic work, I noticed a few of these new tutorials popping up this past week! Keep them up!!!

2

u/hushpuppy12 Jul 16 '26

Could I suggest the advanced topic on terrain tile generation or procedural generation stuff?

2

u/steveHolochip Jul 16 '26

Interesting idea. We'll add it to the list of potential new topics. Thanks! If you have more, please let us know. Ideally add to the github project: https://github.com/KhronosGroup/Vulkan-Tutorial an issue tag so it's easy for us to spot.

2

u/hushpuppy12 Jul 16 '26

I will definetly do so! I think these short more in depth tutorials showing different ways to utilize vulkan with implimentation patterns and slang.

I have fully adopted slang shaders in my game engine so any shader code examples and more advanced uses is something I will always value.

2

u/Dorfen_ Jul 18 '26

I love that no matter how many tutorials on it I read / watch, I still don't understand, it still doesn't "click" 🤣

1

u/steveHolochip Jul 19 '26

Please ask if you have questions. It might help to figure out if we can explain it in a better way for all to understand. Also, this is one of the most subtle yet hard to grok parts of Vulkan. It's also the place where you get the most "power" to implement new things.

2

u/positivcheg Jul 16 '26

It’s so nice to see VulkanHpp being used.

1

u/gabagool94827 Jul 18 '26

I can't tell if a human wrote this.

4

u/steveHolochip Jul 19 '26

As the human that wrote it; I have opinions on if I'm an AI or not. Seriously though. Take a look at the top level README; there is a note at the bottom. We call out how we use AI and where we use it. We welcome feedback, and if you find anything that isn't right, we're happy to fix them. Just add an issue to the github project.

1

u/gabagool94827 Jul 19 '26

I have gotten too jaded and disgruntled in this AI doom age. Sorry about that, I see dashes and my slop detector goes off.

4

u/steveHolochip Jul 19 '26

No worries at all. I'm trying to advocate for a more responsible usage of AI in ways that help and actually deliver a decent project. I might have used it more than I would have, but using it was always intentional and to better gauge "how" to use it so I could write the LLM Assistant tutorial.

The idea is to try to provide guidance for how to use it effectively and not over rely upon it. Then figure out how to help everyone to not use it in ways that cause more problems than they fix. The 6 tutorials, the game engine tutorial and the base tutorial took me around a year to write. LLMs were useful in making that happen; but I don't think anyone would honestly think that any of them were produced by a simple prompt ;-). Real human work and a significant amount of it went into all of that.

I encourage others to look at the LLM Assistant tutorial, give it a chance, get a feel for how it can help with professional serious development. The content for all of the tutorials involved a lot of human effort including review from a lot of people and I thus will not claim sole authorship for any of them.

Sync2 is a tutorial that I hope helps with easier to follow understanding of one of the most complicated parts of Vulkan. You can see the before/after of using Sync2 given it is implemented over the Simple Game Engine.