dahart

44 ms·

721.
by dahart 1y ago
Correct. I didn’t say that sentence was the source of the conflation, I said it was the source of the Ansel Adams problem. There are other parts that mix together capture, formats, and display. Edit: and btw I am objecting to calling film c
722.
by dahart 1y ago
Literally the sentence preceding the one you quoted is “What if I told you that analog photographers captured HDR as far back as 1857?”.
723.
by dahart 1y ago
I think most HDR formats do not typically use 32 bit floating point. The first HDR file format I can remember is Greg Ward’s RGBE format, which is also now more commonly known as .HDR and I think is pretty widely used. https://ww
724.
by dahart 1y ago
It seems like a mistake to lump HDR capture, HDR formats and HDR display together, these are very different things. The claim that Ansel Adams used HDR is super likely to cause confusion, and isn’t particularly accurate. We’ve had HDR forma
725.
by dahart 1y ago
> The eye perceives at about 10 hz. Not sure what this means; the eye doesn’t perceive anything. Maybe you’re thinking of saccades or round-trip response times or something else? Those are in the ~100ms range, but that’s different from w
726.
by dahart 1y ago
The Wikipedia page for Market for Lemons more or less summarizes it as a condition of defective products caused by information asymmetry, which can lead to adverse selection, which can lead to market collapse. https://en.m.wikipe
727.
by dahart 1y ago
The dumbest and most obvious of realizations finally dawned on me after trying to build a software startup that was based on quality differentiation. We were sure that a better product would win people over and lead to viral success. It did
728.
by dahart 1y ago
Not having to learn the API & vertex shaders is definitely a feature of ShaderToy, not a problem. :P The extremely low barrier to entry to writing shaders is one of it’s best qualities. Anyway, the question asked about 2d effects, so th
729.
by dahart 1y ago
It’s super easy. ShaderToy draws a rectangle on the screen and runs the given shader on it. There’s a small amount of plumbing to wire in a few variables like time & mouse position, and your texture coordinates. The rendering part of Sh
730.
by dahart 1y ago
This March 1 1989 date is when the adoption of the Berne Convention took effect in the US, the Berne Convention being what brings the notion that registration should not be required in order to have legal copyright protections. European art
731.
by dahart 1y ago
I agree with you that the cost of lunch food adds up and is more than the cost of accounting. Substantial is a subjective word but true if looking at the number by itself, and feeding 2 million kids in NY state will obviously be a big numbe
732.
by dahart 1y ago
I see the problem is I used your $5M number which is NYC, and divided by the state budget. However, I don’t think the $5M number is referring to the total cost of providing lunch, and that’s what you’re comparing it to in your calculation.
733.
by dahart 1y ago
Which decades? Are you saying the $5M number is too small because this article was from 2017, and I used budget from 2024? Okay, the NY state budget in 2017 was a bit over $25B. That actually still leaves the answer at two hundredths of one
734.
by dahart 1y ago
The specific problem is that the alternative in the case of school lunches does not involve upgrading the payment system. Just because transit might benefit in the short term from not upgrading doesn’t mean school lunches would. TBH I’m a l
735.
by dahart 1y ago
Schools seem amazing at spending on lunches, when they can feed people for less than $5 a meal. I can’t eat for that amount, even when cooking at home these days. I’m not seeing clearly what your transit agency’s payment system upgrade has
736.
by dahart 1y ago
So maybe $5M on a NY state education budget of nearly $40B, or less than two hundredths of one percent. Isn’t it weird that we pay for everything else but keep the food in a separate accounting budget?
737.
by dahart 1y ago
> The economics are the same for a startup and established company, no? No, I don’t think so at all. A startup founder and a startup investor are starting from completely different places and have completely different risks from a minimu
738.
by dahart 1y ago
You asked what the capital is, and the government assets reserved for well connected people is the “capital” in this case. You can call capital equity or remuneration, but that seems slightly weird even though there’s overlap of concepts. E
739.
by dahart 1y ago
What do you mean? @plotics wasn’t talking about remuneration for products or services, nor equity. “Capital ownership” in the sentence you quoted is referring to the company, the ol’ ownership of the means of production. “Granting full acce
740.
by dahart 1y ago
I agree, and it’s objectively true, that there are no guarantees on investment. I don’t think GP was making any arguments that implied otherwise. > It’s very easy to look at an isolated case where they made 10x and see it as unfair “Unfa
741.
by dahart 1y ago
The entire reason someone takes the risk is for the chance to have a ‘positive’ expected value, which in startup land means the company gets really big, hires a lot of people, and makes a lot of money for the owners (founders & investor
742.
by dahart 1y ago
The government part is a good point, this is not the best example of a capitalist endeavor. > What capital is there to own? The rights you mentioned is part of the ‘capital’ - these days capital and ‘means of production’ certainly involv
743.
by dahart 1y ago
How do you think wealth works? Regardless of your political stance or economic beliefs, that doesn’t seem like a very informed or thoughtful summary of Marx, who I assume is who the parent comment was referring to, and was one of the more i
744.
by dahart 2y ago
> that should still contradict the mental model of pixels as little squares. No, it doesn’t. You seem to be missing this point. Using subpixel rectangles does not in any way correct the misconception, it perpetuates it.
745.
by dahart 2y ago
> I’m not sure how ray tracing done by video games can be construed a more area-based than point sample based. It seems to me like ray-hit testing is done in a point-sample manner, and games aren’t doing multiple rays per pixel. Ignoring
746.
by dahart 2y ago
FWIW, I can’t ever remember a time when the most widely used compilers in practice weren’t around 5-10 years behind changes in the standard. Part of the issue is that adoption takes time, and always will. A lot of people using C++ professio
747.
by dahart 2y ago
> Camera pixels represent area, but pixels coming out of a 3D game engine usually represent a point sample Having worked on both game engines and CG films, I think that’s misleading. Point sample is kind of an overloaded term in practice
748.
by dahart 2y ago
Yes, LCD subpixel rendering is a tangent, it’s not relevant to Alvy-Ray’s point. And again, LCD subpixel rendering is treating pixels as little squares; cutting a square pixel into 3 rectangles doesn’t change anything with respect to what
749.
by dahart 2y ago
Eh, calling it infinitely small is at least as misleading as calling it a square. While they are both mostly correct, neither Monty’s explanation nor Alvy-Rays are all that good. Pixels are samples taken at a specific point, but pixel value
750.
by dahart 2y ago
You’re conflating different topics. LCD subpixel rendering and font smoothing is often implemented by treating the subpixels as little rectangles, which is the same mistake as treating pixels as squares. Anti-aliasing can be and is done on

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