SotCodeLaureate

6 ms·

1.
by SotCodeLaureate 3y ago
Thanks! Yeah, this one is supposed to be a very simple implementation for a kind of "how to write a machine code interpreter" tutorial, but I was looking to experiment with some optimizations if time permits. Patching with pre-bak
2.
by SotCodeLaureate 3y ago
Recently I wrote a simplistic RISC-V interpreter for educational purposes mostly, and a friend was benchmarking it against several scripting system in the context of game-character control routines. Well, it's quite fast for what it is
3.
by SotCodeLaureate 3y ago
Couple years ago was experimenting with portable OpenGL rendering, and, interestingly of all platforms I had to deal with the Web was the easiest target :) - thanks to the excellent emscripten largely. If interested, you can find the code&#
4.
by SotCodeLaureate 3y ago
> I'm going to start learning graphics for the first time Vulkan is a quagmire of very low-level concepts, the danger of getting stuck in them and give up without learning anything is just too high. At the same time making somethin
5.
by SotCodeLaureate 3y ago
> No I mean do full software rendering, no shaders, no graphics card. But why? There doesn't seems to be a lot to learn about applied linear algebra (in the sense discussed here) by implementing a rasterizer. But there is plenty of
6.
by SotCodeLaureate 4y ago
Well, to make an (imperfect) analogy with programming tools - Houdini is like Emacs, while Blender is more like Visual Studio. That is not to say that one is intrinsically better than the other, but for a technically-minded person (== any p
7.
by SotCodeLaureate 4y ago
Please let me recommend SideFX Houdini as an artistic (yet technical) tool to learn: https://www.sidefx.com (perhaps would be a kind of therapy in itself - it was for me long ago) > exploring toon shading Sounds excellent! An
8.
by SotCodeLaureate 4y ago
> terrain generation in OpenGL Well, sounds like pretty interesting thing to do, so rewarding in itself maybe. Is it published on github or elsewhere? Also, as someone doing graphics programming mostly as a hobby, I think a good thing to
9.
by SotCodeLaureate 4y ago
He explains the carpet in the top comment under the video.
10.
by SotCodeLaureate 4y ago
I came across a russian translation of Shahnamah several years ago, that was published in 1950-60s, and it's in rhyming verses unlike most other Western translations that mostly resort to prose approximations. Amazing experience, I eve
11.
by SotCodeLaureate 4y ago
Frank L. Holt's books on the subject are really interesting, "Into the land of bones" in particular.
12.
by SotCodeLaureate 4y ago
Neat.. of course it seems obvious now, but that's funny - I'm Ukrainian and I think that without explicit explanation it would have never occurred to me to read, let alone pronounce it this way - the dot before the extension someh
13.
by SotCodeLaureate 4y ago
> at least tens of thousands of simulated AI agents Are you planning on displaying all/most of them every frame, or just to control that many of them, then draw those nearby/visible? If it's the former (but how exactly?) t
14.
by SotCodeLaureate 4y ago
> along the lines of Blender/Maya/Houdini That's very interesting indeed, but arent's these lines are way too blurry? That's why I'm using Houdini and not the other two. And even then, Houdini is not set in
15.
by SotCodeLaureate 4y ago
I often recommend this book, RTCD, as a "better intro to data structures and algorithms" (sometimes as "the best"). The advice often falls on deaf ears, unfortunately.
16.
by SotCodeLaureate 4y ago
SSE has scalar instructions - like "addss", "subss" etc. These will be used by default (at O2 without vectorization enabled) for single-precision floating point math on x86-64 (where stack-based FPU is deprecated). Vecto
17.
by SotCodeLaureate 4y ago
> PREFETCH It's generated by GCC with "-fprefetch-loop-arrays", not supported in clang I believe.
18.
by SotCodeLaureate 4y ago
> the compiler will never emit ... instructions like PSHUFB or PUNPCKxx These are most certainly generated by GCC from C++ code (no intrinsics and such) - can even provide an evidence in the form of a codebase with appropriate build flag
19.
by SotCodeLaureate 4y ago
> sqlite ... 19x slower But is this a failing of wasm or the system glue layer, that for something like sqlite/web has to go through js/browser/etc? Yes, I understand the importance of real-life tests like this, but how on
20.
by SotCodeLaureate 4y ago
> if the original uses highly-tuned x86 SIMD BTW, if there is a problem with the current WASM performance, it's probably SIMD. Again, based solely on my own benchmarks, exclusively in the area I'm interested in (game-type workl
21.
by SotCodeLaureate 4y ago
> 3-5x slower than native Depends on workload of course, but seems too pessimistic with the current state of WASM support. At least this is not what I'm seeing with the things I'm working on (graphics-related), when comparing t
22.
by SotCodeLaureate 4y ago
> what do YOU not like about arm? I find it difficult to read, it's aesthetics mostly, not necessary an architectural thing as such, the choice of mnemonics, why "ubfx", what's "rsb" - have to lookup these t
23.
by SotCodeLaureate 4y ago
Hm, as a counter-example, I learned assembly languages in this order - Z80, x86, 6502, ARM, SuperH, MIPS (then some more). SH and MIPS I like the most, not because of delay slots specifically, but I do like the concept. (The one I "hat
24.
by SotCodeLaureate 4y ago
Removing lighting before object recognition may be a separate step, yes. But in this case it's just that their goal is to scan objects, shapes as such, and not intrinsic properties of their constituent materials (such as specularity).
25.
by SotCodeLaureate 4y ago
These are just standard OBJ files with diffuse textures only and trivial material settings (all white). Additional there is some metadata that specifies that the same data is to be used as displayable model and collision geometry. So, essen
26.
by SotCodeLaureate 4y ago
No, you can't boot into ARM code without it. ARM part is disabled power-on, VPU is a general purpose processor really. Basically, on start-up it loads its start.elf (i.e. boot application compiled for its instruction set) from boot-med
27.
by SotCodeLaureate 5y ago
I don't know, I live right next to where this was happening, what I've heard seemed like artillery fire (not an expert though, but I probable will soon be).
28.
by SotCodeLaureate 5y ago
Here is the latest local news on this (in Russian, this is russian-language news site in Odessa): https://dumskaya.net/news/v-chernom-more-vblizi-odessy-spasl... Fortunately all 6 crew members seems to be safe (4 of th
29.
by SotCodeLaureate 5y ago
Apparently the power plant was captured by russian forces, source (in Ukrainian): https://censor.net/ua/news/3318857/okupanty_zahopyly_chaes
30.
by SotCodeLaureate 5y ago
Right now the local news sources (I'm in Odessa, Ukraine) seems to diverge on this, some say there was an (averted) sabotage attempt, some say there is a fighting going on.

More ›