Viewing profile — exDM69

Counter question: why shouldn't it be portable? It's definitely a 80% solution where you occasionally need to drop down to intrinsics (at zero runtime perf cost) for CPU specific i…

> They specifies a constant SIMD width so it's non-portable. This is incorrect, you can use vectors wider than native SIMD width and the compiler will break them down to register s…

> misdirect Ukrainian drones toward NATO airspace (which has happened). Claims to such effect has been made in public by reputable persons but they are not very credible nor has an…

From what I have read (from unreliable sources), Ukrainian fighter pilots tried this a few years back and stopped due to too many losses. To engage a slow flying drone with cannons…

The example code in this article is using Zig's portable SIMD features. Similar features are available for C/C++ (GCC/Clang extension) [0], (nightly) Rust [1] and C++26 [2]. All of…

> The best SIMD optimizations likely require changing your data format from AoS to SoA. We do have gather load instructions in SIMD instruction sets these days (AVX2 and newer), so…

> Is the `@reduce()` function in the example a special... Yes, it is. In SIMD you can do a reduce for a commutative function in O(log N) steps. Sum, product, min, max, all, any, et…

Thanks for listening to feedback. Seems like you've made many improvements since yesterday. I played a few more rounds today. Fun!

Absolutely delightful, just played a few rounds. I really love ATC games and the "draw it by hand" aspect makes this kinda funny. Maybe I need to try with a real mouse, kinda slow …

That's the whole point! You plug it into your project and it can be rendered on anything that can push pixels and/or triangles to the screen. Events from windowing system go in, li…

I started writing a software triangle rasterizer. Not sure exactly why, but I just felt like doing it. Like many software rasterizer projects I used Fabian Giesen's software raster…

Slightly related note, the pictures in the articles show a handheld digital oscillscope. It's an Owon HDS200 series oscilloscope with signal generator and they are amazing and the …

> You can play with sensors (acidity, humidity etc) Can you share some useful sensors? Any good pH sensor that can work for some period of time without manual maintenance (cleaning…

Great looking instruments. I've built half a dozen similar box guitars, it's such a fun little thing to build. Do I see a piezo disk under the bridge in the 3rd instrument? Do you …

That's a fun two minutes for any computer scientist drum and bass fan.

I have shared the trick in this thread above.

Good attempt, but it's simpler than that. For each AABB, you take the morton code of the minimum and maximum and store them in the array. But for sorting and searching, construct a…

Nice and concise description of quadtrees implemented with classical pointer chasing data structures. A faster and (arguably) simpler way to construct quad/octrees is using morton …

> notorious Vulkan shader compilation lag spikes. Vulkan gives all the tools to avoid any "lag spikes" from shader compiling. In fact, causing them is much more difficult than Open…

> or you leave performance on the floor The dynamic rendering local read feature is for this. You can get tiler gpus working on the happy path without the need for verbose render p…

> look up the extension on vulkan.gpuinfo.org and see ... currently 0.3% of all devices support it. Afaik the extension isn't even finalized yet and they are pre-releasing it to ga…

That's the right way to go for simple use cases and especially getting started on a new project.

You can use descriptor heaps with existing bindless shaders if you configure the optional "root signature". However it looks like it's simpler to change your shaders (if you can) t…

The GPS jamming maps are based on commercial air traffic flying in the area. While that gives some ideas of how widespread the jamming is, it won't give accurate information about …

Starlink was also blocked by radio frequency interference. Granted that can't possibly cover the entire area of the country.