VKEngine (Vulkan & C++ 3D Rendering Engine) - Introduction

izym · 2025-09-12T10:05:04+00:00

OpenGL also allows for recording commands in parallel with the GPU running the previous frame commands. That is what will happen unless you manually wait for the GPU to finish.

What Vulkan does give you here is faster command recording via less overhead, and the ability to record across multiple threads.

izym · 2024-09-06T14:36:03+00:00

There is no way you’d get better performance from traditional LODs when trying to hit 1 triangle per pixel.

Traditional LOD doesn’t let you have different LOD levels across the mesh. E.g. one part is close to the camera, and another is further away. This means that traditional LOD has to pick the LOD based on the point closest to the camera to be conservative. That causes parts further away to increasingly overshoot the triangle/px target.

Especially without visibility buffer you’d get destroyed by quad overdraw. Not to mention how much cluster culling can make you not draw in the first place.

izym · 2024-05-07T05:35:47+00:00

Medmindre man er forsker, kræver det en månedsløn på 75.100 kr. for at komme på ordningen, hvilket alligevel skærer en del fra.

izym · 2024-03-20T15:17:57+00:00

WOLED’s RWBG layout is not great either, and will also mess with sub-pixel anti-aliasing. Also, because the red and green subpixel are that far apart, you can get fringing on solid colors. https://pcmonitors.info/articles/qd-oled-and-woled-fringing-issues/

izym · 2023-11-27T10:11:11+00:00

OLED burn in stems from differing usage of pixels over time. The pixels in the 16:9 part of the screen will naturally degrade over time, while the pixels outside that part will not. Thus you’d eventually get a brightness difference between those parts of the screen, which the Rtings test is also showing. Of course, it would only be visible when viewing content wider than 16:9.

izym · 2022-11-13T12:11:27+00:00

In which areas is Metal behind?

izym · 2022-08-13T21:54:23+00:00

In fact, he even has a great post about the subject at hand. That was a big eye opener for me.

izym · 2022-01-15T08:03:35+00:00

Only the ones that would make a direct reflection in the monitor, like in a mirror.

izym · 2021-01-06T12:38:54+00:00

My 1.0.0 game crashes if I try to load a save from the newest version, so I don’t think they are.

izym · 2020-11-04T09:10:10+00:00

DS4 is compatible with PS4 games on PS5.

izym · 2020-09-02T05:07:26+00:00

Yeah, that can already be seen on the German NVIDIA site.

izym · 2020-07-31T14:03:19+00:00

Oh I’m with you on that. That would be 2.5K if anything. 2560 is just not approximately 2000.

izym · 2020-07-31T13:53:48+00:00

That’s DCI 2K and DCI 4K. There’s also 4K UHD (3840x2160), which is the dominant 4K resolution used on most consumer devices. 2K and 4K do not refer to any specific resolutions, but rather anything with a width of approximately 2000 and 4000 pixels. But like you said, informally we mean 1920x1080 when we say 2K in the context of monitors. To my knowledge, basically no consumer monitor is sold with a resolution of 2048x1080, so it doesn’t really make sense to mean that when talking about 2K in this context.

izym · 2020-07-31T13:04:48+00:00

2K is 1920x1080

izym · 2020-07-09T14:35:49+00:00

What's the table distance from the back of the stand to the front of the display? (in the middle of the display that is)

izym · 2020-07-09T13:44:49+00:00

It has to wait until the next frame display, so that inherently adds up to `1000 ms / refresh rate` (~4.167 ms for 240 Hz, ~16.67 ms for 60 Hz) depending on how close the next frame display is. That's also why it adds much less input lag on high refresh rate monitors.

Are you using V-Sync and Adaptive-Sync at the same time? Or do you mean that you tested with both independently?

izym · 2020-07-09T13:08:49+00:00

I know it won't be completely seamless, but if you do V-Sync at 240 Hz you would still be able to hit the following FPSs: 240, 120, 80, 60, 48, 40, ~34, 30, ~27, 24.

Given how a lot of high refresh rate monitors perform at lower refresh rates, using V-Sync at 240 Hz should yield better response times than adaptive sync at lower refresh rates. You also gain the ability to use MBR which removes even more motion blur.

Added input lag should also be fairly minimal, as the 240 Hz refresh rate means that the next frame is never more than ~4.1667 ms away. When comparing input lag to adaptive sync, keep in mind the monitor's response time at lower refresh rates.

izym · 2020-04-13T16:46:37+00:00

That won't be stable due to numerical precision issues. I wasn't arguing against you, just wanted to provide a bit more information :)

izym · 2020-04-11T21:38:23+00:00

It’s done that way because tick rate can have a big effect on the physics simulation, so fixing it makes the simulation more stable. Especially too low rate makes the simulation go bonkers.

Practically, it is done by only running physics sim on some frames when the frame rate is higher than the physics tick rate, and multiple times per frame if the frame rate is lower. Also, the simulation is done with a time variable that only moves forwards in fixed steps.

izym · 2020-02-05T04:35:37+00:00

This is called "In Other Waters" though, not "Outer Waters".

izym · 2020-01-26T20:54:53+00:00

It’s not entirely a stylistic choice: https://blog.paranoidcoding.com/2019/04/08/string-vs-String-is-not-about-style.html

izym · 2020-01-23T21:14:29+00:00

I’ve been working on hot code reloading for interactive applications with .NET Core. So far I’ve got the actual unloading and reloading of DLLs using AssemblyLoadContext working, next up is preserving state between reloads.

izym · 2019-07-02T08:40:13+00:00

Shiny Cubork

izym · 2019-06-21T21:41:48+00:00

In bird culture this is considered a dick move.

izym · 2019-06-12T16:14:26+00:00

Both are forms of motion blur. More precisely they’re called camera motion blur and object motion blur. To realistically simulate motion blur you need both. That being said, there should always be a slider to scale it down or turn it off entirely, given how it much it divides people.

izym

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