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We have released lighttracer.org! It is GPU physically-correct renderer for web. Import your OBJ model, configure the scene, and save the rendering result. Model from grabcad.com/library/10-cyl…
RTs appreciated!
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Danila Ulyanov
4.1K posts
Danila Ulyanov
@hb3p8
Light Tracer Render development, 3d graphics, CAD tools and a little bit of gamedev
Katılım Mart 2010
1.6K Takip Edilen968 Takipçiler
Danila Ulyanov retweetledi
This Stephen Biesty cross-section shows the tasks for the workers and craftsmen in a castle.
Castles built as residences needed a whole village to support the servantry, the guests, the garrison, let alone the noble family, requiring farmers, blacksmiths, coopers, huntsmen, etc. Comparing a castle to a compact town is a good way to wrap your head around all the daily work needed to keep things running.
Medieval Diesel@TimothyEveland
Stephen Biesty is the master of historical cutout cross-sections. Check out the detail on this stunning cutaway diagram showing the defensive features of medieval castles.
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They actually work worse with simpler approaches like server side html + unpoly.js (for example) It’s possible of course, but you’ll have to babysit the agent way more
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Sure modern web dev still feels wrong, but since LLMs are so good at it I really don’t mind anymore
Lucas Meijer@lucasmeijer
I'm in non stop doubt between "just let go, ride with the flow, adopt all this modern web stuff", and screaming "no i just need a computer program that outputs a html string, I don't want to bring in 100k+ ish lines of framework code, all these guys are wrong"
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Friendly reminder that these tonemappers rely oh physically-correct input HDR to work at all. Judging by screenshots all you likely need is some color grading LUT.
Charlie Callahan@ccallac7
Here is my take on tone mappers after experimenting: ACES: saturated colors, 2010s console look AGX: looks very realistic, reduces color saturation, reds/oranges look salmon pink Uchimura: default = vibrant colors, can be adjusted using 6 parameters to get the look you want
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Danila Ulyanov retweetledi
GIF
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Chat, quick question: Should user colors be saved along with the scene file, or globally in user settings?
Danila Ulyanov@hb3p8
Damn, chatGPT is ok in designing interfaces these days while keeping the task in mind. The prompt was: Propose updated design for color selector widget, add controls for saved user colors in the bottom
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@castano I'd say you can decode jpegs pretty fast in wasm while having full control over what's going on. Sure, it's a tradeoff but still a viable option
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@hb3p8 Using the native functionality of the browser is much more practical. No additional downloads and much faster execution. For formats not supported by the browser that's your best option, but for standard formats it's not a competitive solution.
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Don’t forget you can actually decode the image however you like with JS or WASM. Of course there are downsides as well, but worth mentioning
Ignacio Castaño@castano
Loading images is one of the most fundamental things a browser does. It turns out that doing it efficiently from JavaScript is an open problem. There are multiple APIs available and the right choice depends on the browser you are targeting. ludicon.com/castano/blog/2…
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Damn, chatGPT is ok in designing interfaces these days while keeping the task in mind.
The prompt was: Propose updated design for color selector widget, add controls for saved user colors in the bottom
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It sure gives you a full picture, but dealing with all that sometimes I envy being able to rely on browser black box 🤣
Nic Barker@nicbarkeragain
I've found UI programming to be very deep and interesting if you're doing it all from scratch (API design, layout, rendering, text handling, focus management, animation, input handling etc). Such a shame we condemned a generation of frontend devs to the browser black box.
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Danila Ulyanov retweetledi
I've found UI programming to be very deep and interesting if you're doing it all from scratch (API design, layout, rendering, text handling, focus management, animation, input handling etc).
Such a shame we condemned a generation of frontend devs to the browser black box.
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I’d say single simple CMake file is pretty good too
Ryan Fleury@rfleury
Downloading a library to build from source and seeing a build.bat instead of 100 CMakeLists.txt files
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Did a bit more work on file format for 3d scene for Shade.
Was - 29.2 Mb
Now - 22.2 Mb
That's 24% reduction. The scene is Sponza.
The original GLTF scene with the HDR environment map is 58 Mb.
My file format also encodes BLAS data, meaning we have ray-tracing support. In fact, BLAS is just over 50% of the file size. Without the BLAS included, the file size is just 10.8 Mb
The savings this time comes from sub-geometry deduplication. That is - we find identical pieces of geometry in the scene, and reference them instead of encoding them again.
There is a catch, we matching based on local surface information, so if you have, say a flower pot in your scene, and it's a separate piece of geometry copied 10 times, with different orientation and scale and slight offset - I will still find them and detect the duplicates, even if the transform is baked into the geometry itself.
Specifically on Sponza, I believe it's the curtains, columns and pots that get deduplicated.
The benefit is that there is no decoding cost, takes a few seconds to deduplicate geometry on a complex scene, but you get smaller file size and instant deserialization, unlike with something like Draco.
I haven't ran it on many scenes, it consistently finds duplicate geometry, even if it's just 5-10% of the scene on good assets.
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Recent LightTracer work: deep links, login plumbing, encrypted scene uploads, Backblaze integration, content hashes, project metadata, handling previews.
Desktop renderer becomes a very different product once it talks to the cloud.
That's something I'd like to explore more!
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Danila Ulyanov retweetledi
Danila Ulyanov retweetledi
Hi hi, Dear ImGui 1.92.7 is released!
50+ changes (e.g. tables reworked columns freezing with hidden columns, reorder from context menu, webgpu for emscripten 5 & wgvk native, nav keyboard/gamepad to open context menus, & many fixes/improvements)
github.com/ocornut/imgui/…
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Danila Ulyanov retweetledi
meshoptimizer 1.1 is out!
Featuring two new major features, meshlet topology compression and opacity micromaps, as well as a few smaller features and improvements! Meshlet codec is heavily optimized for CPU decompression and output can be compressed further with Zstandard; opacity micromap rasterizer outputs hardware ready data representation and is fast and easy to integrate.
Boosts and repository stars are welcome!
github.com/zeux/meshoptim…
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@hb3p8 @stephenhaney @kvncnls It does much more as it has a cms and a lot of design system details.
A major update is in beta and coming up in the next couple of days.
Want try it out?
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Pretty accurate breakdown of Paper's rendering engine, for those interested in such things
Amarnath@amrnth0
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