HackerNews Digest

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The article explains why Nintendo 64 (N64) games lacked the bright additive blending seen on PlayStation titles. While the N64’s Reality Display Processor (RDP) supports configurable blending via a color combiner (similar to OpenGL’s glBlendFunc), its default additive mode does not clamp results, causing overflow and color wrap‑around. The author solves this by rendering to a 32‑bit RGBA 8888 buffer while keeping sprites in 16‑bit RGBA 5551 format, effectively scaling sprite colors down (right‑shifting 3 bits) to provide headroom for additive accumulation. A fog‑color trick inserts the required scaling in the combiner, and after rendering the scene the 32‑bit buffer is converted back to 16‑bit for display. Conversion is accelerated using the N64’s vector co‑processor (RSP) with 128‑bit instructions, reducing processing from ~70 ms to ~3 ms per 320×240 frame. The method yields correctly clamped additive effects without wrap‑around, at the cost of higher memory bandwidth; further optimizations could limit 32‑bit rendering to only additive sprites or lower resolutions. A demo implementation is available on GitHub.

The scraped page provides no substantive title or content. It begins with a generic error notice—“Something went wrong, but don’t fret — let’s give it another shot”—indicating a failed load or processing issue and suggesting a retry. Following the message, a section labeled “Images and Visual Content” appears, containing a single entry: “Image 1” whose alt text consists solely of a warning emoji (⚠️). No additional descriptive text, data, links, or contextual information accompanies the image placeholder. The overall structure consists only of the error prompt and an empty visual‑content placeholder, offering no further technical details, narrative, or actionable content. Consequently, the page’s scraped material is limited to the error message and the minimal alt‑text indicator.

The Bean Pointing Stick is in preorder with a launch date of 6 May 2026. Preorder tiers are: Early Access (ships immediately), Tier A (ships within 8 weeks of launch), and Tier B (ships within 20 weeks). Each unit includes 3D‑printed black parts, a PCB, optional USB‑A‑to‑USB‑C cable, one screw, one magnet, four friction pads, and one friction nub; it ships fully assembled. Firmware is preloaded with a custom QMK build, and users can reflash via QMK Toolbox or Configurator. Modifications are supported via an official Modder’s Guide. Checkout may fail if ad‑blockers are active. Shipping uses Canadian provider Chit Chats; transit estimates are shown at checkout, not total delivery time. Sales tax is applied at checkout for Canadian orders; international orders may incur import taxes, duties, and brokerage fees collected by customs. Untracked shipping options provide no tracking number, and some countries are unsupported. Returns are accepted within 30 days (shipping excluded) for unassembled kits only. A one‑year limited manufacturer warranty applies, void if hardware, software, or firmware is altered.

Naturally occurring quasicrystals are extremely rare and have been identified in only a few geological and extraterrestrial settings. Three distinct quasicrystals were first discovered in the Khatyrka meteorite (Russia): - **Icosahedrite** (Al₆₃Cu₂₄Fe₁₃) – exhibits full icosahedral symmetry; its structure derives from a six‑dimensional D₆ lattice via the slice‑and‑project method. - **Decagonite** (Al₇₁Ni₂₄Fe₅) – a stacked quasicrystal with tenfold rotational symmetry in two dimensions and periodic stacking in the third; constructed from a four‑dimensional A₄ lattice. - **i‑Phase II** (Al₆₂Cu₃₁Fe₇) – also icosahedral, generated from the D₆ lattice but with a higher Cu/Al ratio; it was first identified in nature before laboratory synthesis. A fourth quasicrystal was found in a fulgurite (lightning‑formed sand) in Nebraska, composed of Mn₇₂.₃Si₁₅.₆Cr₉.₇Al₁.₈Ni₀.₆, displaying 12‑fold symmetry in quasiperiodic layers stacked periodically. A fifth, Si₆₁Cu₃₀Ca₂Fe₂, with icosahedral symmetry, was recovered from the Trinity atomic‑bomb test site. All formations are linked to extreme high‑temperature, high‑current, rapid‑quench events such as asteroid collisions, lightning strikes, or nuclear explosions.

- In the U.S., meth production shifted from ephedrine/pseudo‑ephedrine to phenyl‑2‑propanone (P2P) synthesis between 2009‑2012 after regulatory restrictions on precursor sales. - P2P routes (via nitrostyrene or ethyl phenylacetate) initially yielded a racemic mixture of d‑methamphetamine (the active, dopamine‑releasing isomer) and l‑methamphetamine (minimal psychoactive effect). By 2019 the l‑isomer content fell to near‑zero, so modern street meth is ~95 % d‑meth by purity and potency. - DEA seizure data show a rapid rise in P2P‑derived meth, increasing overall purity while potency (percentage of d‑meth) fluctuated but remained high; “purity” (total meth fraction) now averages ~95 %. - Supply indicators—border seizures, Seattle wastewater measurements, national usage surveys—show a doubling of consumption around 2017 and a tripling of heavy‑use prevalence (2015‑2019). Correspondingly, street price per pound fell from ≈ $15 k (2014) to ≈ $4‑5 k (2019). - Meth‑related overdose deaths have risen sharply, exceeding 24 000 in 2020, driven by higher availability rather than new contaminants; lead acetate or other additives are not correlated with the observed psychiatric effects. - Overall, the primary impact of P2P meth is dramatically increased volume and purity of d‑methamphetamine, not a distinct chemical or contaminant‑driven toxicity profile.

The study demonstrates that the avian pecten oculi enables retinal cells to sustain anaerobic glycolysis, allowing portions of the bird retina to function without oxygen—a condition previously unseen in vertebrate tissues. Comparative measurements showed normal oxygen levels and no glycolytic shift in the retinas of Chinese pond turtles and broad‑snouted caimans, suggesting the anoxic adaptation arose after the avian line diverged from crocodilians, likely during the dinosaur era when retinal thickness increased. Researchers hypothesize the trait evolved in theropod dinosaurs to enhance visual acuity for predation and later supported high‑altitude flight where ambient oxygen is low. The absence of retinal blood vessels may also improve visual resolution by eliminating vascular obstruction. Beyond evolutionary insight, the mechanism offers a model for tissue tolerance to hypoxia, potentially informing medical strategies for conditions such as stroke, where oxygen deprivation causes damage. The findings underscore the value of studying extreme physiological adaptations to uncover natural solutions to low‑oxygen stress.

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The Project Zero team built a two‑exploit chain for Pixel 10, adapting the earlier Pixel 9 Dolby 0‑click vulnerability (CVE‑2025‑54957) by updating library offsets and replacing the overwritten __stack_chk_fail with dap_cpdp_init, due to the device’s use of RET PAC. The chain’s second stage could not reuse the Pixel 9 BigWave LPE because that driver is absent on Pixel 10; instead, a VPU driver (/dev/vpu) exposing the Chips&Media Wave677DV MMIO registers was examined. An audit revealed that its mmap handler maps the VPU register region without bounds checking, allowing an attacker to request an arbitrarily large VMA. Because the kernel resides at a fixed offset above the VPU registers, the mmap can expose the entire kernel image to user space, enabling arbitrary read‑write and kernel code execution with minimal code. The vulnerability was reported on 24 Nov 2025, rated high severity, and patched 71 days later in the February 2026 security bulletin. The authors note faster triage compared to the prior BigWave bug but stress the need for more rigorous driver security practices.

The California “Protect Our Games Act” seeks to prevent game publishers from discontinuing online services for titles that consumers have purchased. Supporters, including the Stop Killing Games (SKG) coalition, argue that live‑service games require clear end‑of‑life procedures to maintain consumer access after purchase. The Entertainment Software Association (ESA) opposes the bill, stating that users receive a license, not ownership, and that shutting down obsolete games is a normal aspect of software requiring ongoing online infrastructure. ESA warns the legislation would force publishers to renegotiate music and intellectual‑property licenses indefinitely or alter games in ways that may be legally or technically impossible. The bill has cleared the California Assembly’s Privacy and Consumer Protection and Judiciary committees but still needs majority approval in both the full Assembly and Senate before reaching Governor Gavin Newsom. The movement’s momentum follows a stalled UK parliamentary debate on game preservation.