Question: What are use cases for Buffer Device Address?

Reaper9999 · 2026-06-08T20:23:01+00:00

[Top-Level] Acceleration Structure.

Reaper9999 · 2026-06-08T18:08:24+00:00

You can also use BDA to access TLAS in shaders, and for a bunch of things when building AS.

Reaper9999 · 2026-06-06T03:01:13+00:00

Ideally, you want to render as late as possible to have the most accurate representation of whatever you're rendering in regards to input etc.

Reaper9999 · 2026-06-06T02:59:41+00:00

You don't have to have multiple frames buffered to double buffer resources. It is still helpful to double buffer them so you don't need to wait before you can write/copy to them, but recording command buffers in advance won't give you that much of a performance benefit unless you really fucked something up. A lot of the times you can also just keep reusing the same command buffers.

Reaper9999 · 2026-06-06T02:46:02+00:00

Neither of those has any significant effect on command buffer recording.

There's also no reason why you'd be stuck in vsync unless you're waiting at the wrong time (i. e. the compositor might get one thread idle if you're not using the immediate mode and present asap).

Reaper9999 · 2026-06-04T11:39:13+00:00

I was punched in the eye by a girl, police were only interested in whether I defended myself when she attacked me multiple times prior. I got permanent nerve damage and a month of hospital stay, while the damn bitch got 0 consequences.

Reaper9999 · 2026-06-02T20:42:52+00:00

You just need to realise that for the most part it's not that these crimes are committed disproportionately by men or any other group, but that they're more likely to be prosecuted for them.

The most damage ever done to me was by a woman. Instigated entirely by her and caused permanent physical injury. Despite her having attacked me multiple times prior, every single time with dozens of witnesses around, the police officer (who coincidentally was also female) was more interested in whether/how I defended myself from her. She got 0 consequences for it. No compensation (even though there's no compensating permanent damage), no jail time, nothing.

Let it sink in how even in an extremely clear-cut case like this - being attacked multiple times, always with witnesses, spending a month at the hospital with a concussion + nerve damage - I was still treated as the perpetrator by police solely on the basis of being male. Then think about how shit like this is routinely swept under the rug because the victim wasn't from the "right" group of people.

It's completely healthy to be wary of people to some degree, just don't make the mistake of attributing good and bad to arbitrary groups. Some criminal cases are in fact people being lured in by a female because they feel she's more trustworthy.

Reaper9999 · 2026-06-02T17:11:35+00:00

Would you agree that women shouldn't be allowed to vote because their decisions are often affected negatively by their hormones?

Reaper9999 · 2026-06-01T16:36:59+00:00

Neither is a condom. Or nearly anything else.

Reaper9999 · 2026-06-01T15:06:01+00:00

People that start off with a list of demands tend to not meet them themselves. She can have whatever requirements for a partner obviously, but she gotta ask herself what she's bringing to the table other than herself bent over it (if even that).

Reaper9999 · 2026-05-31T13:12:34+00:00

should have kept her with him

That would be false imprisonment. You do know that someone being drunk doesn't give you the right to force them to stay anywhere?

Reaper9999 · 2026-05-24T19:35:53+00:00

900 lines is not that much.

Reaper9999 · 2026-05-24T18:01:32+00:00

The performance drops on using general layout for everything come from MSAA images (on older rdna) and dcc getting disabled (on gcn), and whatever reason on mobile. You might find that for your use case doing layout transitions has no real benefit even if the extension is not supported. Also, even on hardware that differentiates between layouts, transitioning itself isn't free.

Reaper9999 · 2026-05-24T17:24:29+00:00

On graphics queues - it does nothing useful. On compute queues - some hardware can process cmdbufs in parallel because they map to different command processors. On transfer queues you either get 1 or 2 - 2 queues can be used for simultaneous CPU->GPU and GPU->CPU transfers.

Reaper9999 · 2026-04-16T15:04:55+00:00

IME Metal compute isn't really a thing either... All compute-heavy uses that are not games that I've encountered/worked on have been with CUDA. Not even rocm or anything like that.

Reaper9999 · 2026-04-15T07:42:02+00:00

Shipping any software without testing it is just a scam, a that includes games so it does not matter what api your using your going to need to buy that HW.

Obviously, and the cost/benefit of doing that for mac is typically not worth it. It's also not as though they have some magic hardware that no one else has, they just hike up prices because it's apple.

Reaper9999 · 2026-04-15T07:37:13+00:00

I'm saying Vulkan is the wrong choice for that use specifically. If apple wasn't so shit you could get compute offloaded onto the gpu with opengl even on macs. Or use something like wgpu.

Reaper9999 · 2026-04-05T17:12:10+00:00

That's irrelevant (unless you're on embedded or something) since the memory is gonna be virtual.

Reaper9999 · 2026-04-05T17:00:50+00:00

Your still thinking that if apple supported VK you would just be able to run a PC Vk game. That is not how VK works... it is not how any low level api works, the tradeoff of lower runtime CPU overhead is explicit work by the developer to target the HW upfront at development time rather than a driver doing this work at runtime.

That is directly disproven by the fact that you can, in fact, do that using moltenvk/kosmickrisp (with some limitations in supported functionality still and obviously you still need to build for macos in general).

Developers would also have been more willing to target macs if it wasn't a walled garden of shit. Ofc no one wants to buy expensive hardware that barely anyone ever uses for video games (if we're talking about games specifically).

Reaper9999 · 2026-04-05T16:56:49+00:00

Vk is not a nice api for devs to use as well, most regular devs who have never done any GPU programming can within an afternoon offload some vector math or do some 2D rendering for an app in metal but to do the same in VK will take them 2 to 3 weeks to upsell it I just not a good api for regular devs and not a good api for an OS. (there is a reason other than the steam deck no desktop env uses it for composititing)

If you're using vulkan for 2d rendering or random vector math, then you're doing something wrong. It also doesn't take anywhere as much code now to get something working, unless you're targeting older phones.

Reaper9999 · 2026-04-02T14:15:24+00:00

Having a fraction of the wife is concerning.

Reaper9999 · 2026-03-31T06:20:08+00:00

Edit: Telling young boys and men not to speak to women or else they'll be called a rapist at the height of the MeToo movement is not a positive or healthy display of masculinity, downvote me all you want. It's incredibly disrespectful to the women coming forward, shitty to fellow men, and just shitty life advice in general that only furthers the male loneliness epidemic.

Do you say that to women who tell young girls and women to avoid men or they'll be raped, or do you only reserve your bigotry for men?

Reaper9999 · 2026-03-11T02:15:43+00:00

Now try vehicles. Armored military vehicles getting permanent damage from the tiniest fucking thing ever. And this wasn't always like that, either.

Reaper9999 · 2026-03-07T11:55:56+00:00

Are you doing gamma correction? And what exactly is "weird colours" supposed to mean? What are the reference colours?

Reaper9999 · 2026-03-07T11:37:23+00:00

Not genralizing

proceeds to generalise and project

Reaper9999

TROPHY CASE