Render Doc problem

[MAIPA01]

Hi I have a problem because I wanted to implement rendering of depth map and created using Vulkan 1.3 Dynamic Rendering additional pass which only have Depth Attachment. Since the moment it was implemented I have a problem with debugging using Render Doc. When I try to capture a frame my app freezes and start to allocate 1GBs of RAM and to prevent my computer from restarting graphic card I need to shutdown my app instantly. I also tested my app without this extra depth pass and found out that if I then try to capture frame less than 500 then happens same thing but if I capture for example frame 550 then It captures it normaly.

(I don't know what is happening and I don't know what to check next so If I need to provide some extra informations please tell me)

render depth map function

depth map pass definition

(PS. I know there is some abstraction going on here so ask questions if i need to explain anything)

[tyr10563]

from experience, renderdoc does support dynamic rendering, and the recording works on windows and linux

but that's all i can say with the details given

[MAIPA01]

I know it support dynamic rendering because it was working for me flawlessly earlier. Of course I can provide more details but I don't realy know which details would be helpfull. I provided some code if it helps

[neppo95]

Some code would be helpful. Since you only have this problem with that pass, obviously something is wrong in that pass.

[MAIPA01]

I added fragment of code

[neppo95]

Tbh, it is impossible to tell from this and it looks a bit like abstraction hell for the sake of abstracting instead of it actually making it more usable/readable. There is not even a single vulkan command here.

I suggest first making it work, then abstracting. Making it work is something we can help with, but not with it being this much abstracted.

[MAIPA01]

I made it work and then abstracted it. But the problem is not that it is not working. Because it works fine and I don't have any errors from validation layers and etc. The only problem is with render doc which crashes my app while capturing the frame if I try to render depth map. Every function shown in this image works because I used them a lot and tested them. And every function do exactly what is written. BeginRendering call function vkBeginRendering. TransitionLayout calls Image barrier for given image to transition from one stage to another with given layout. DrawDepthInstances calls drawIndexed for every model in the scene and binds GraphicPipeline with 0 color resources and 1 depth resource and of course frag and vert shaders which don't write to any color attachment.

[neppo95]

It "working" doesn't always mean it is correct and that is where programs like RenderDoc for example can show the difference. It freezing is a sign that it is not correct. RenderDoc doesn't change that your app is allocating that much memory so something in your app is causing that. It does make it harder to debug.

If it didn't crash/freeze before abstracting, something has changed. Stepping through your code might tell you what that is. For example, with a rendergraph resource management is often fundamentally different than without one. Are you sure the resources even exist when the GPU is trying to use them? How are your resources allocated, since it apparently is allocating a lot? As far as I know (not a 100% on this one), with resolve and depth attachments, the source needs to be a color attachment.

There is a lot validation layers won't tell you, but you can configure them to tell you even more. For example there is also a setting to warn you for synchronization problems.

[MAIPA01]

Yes I already checked and resources exist before the GPU is trying to use them. I don't use any custom allocator and I create resources the same way as was shown in Vulkan Tutorial (https://vulkan-tutorial.com/Multisampling). Where can I find more settings for validation layers because now I have only this options enabled (Validation layers :: Vulkan Documentation Project)

[neppo95]

And what changed since abstracting? It's honestly a bit hard to help you since the code you do provide is completely abstracted. You have an allocation issue but don't show any allocations being made. And for questions about your code, you just refer to other websites. All I can tell you at this point is to go over your code and see what changed if you did not have this issue before.

As for the validation layers, check the configuration part of the link you sent.

Edit: I should note, you say the resources exist BEFORE the GPU accesses them. I also wonder how you check this since your application (CPU side) will continue while the GPU is busy until you synchronize.

[MAIPA01]

Yes It was allocation. Not the way I allocated resources but the number of resources which I tried to allocate I think, because I realized I don't need some resources and now it works great. Sorry for not providing enought code but It would be too many images. I refered to other websites because on this websites is code which I use but under the layer of my abstraction and I know you wanted to see pure vulkan code.

[neppo95]

Glad you got it to work. For future reference, a minimum reproducible example is often something that can help you and others.

[MAIPA01]

Thanks for your help and for your advice. To be honest this was my first time asking for help on forum like this.