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One of our complaints from traders: the UI optimised orders for speed, not correctness. Some flows updated positions before the exchange responded, then corrected them later if the order was partially filled or failed, but this caused late updates, incorrect states, and failed sells. Now that our indexing and... show more

Josh

11,154 subscribers

15,715 Aufrufe • vor 8 Tagen •via X (Twitter)

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What the fuck is China building? This is not a clip from movie, this is a real project in China. Due to the trade war, there’s a video of a Chinese guy said, “we both benefit from trade, U.S. and China. But only one of us is using the wealth to build for our people”. that is 🇨🇳

What the fuck is China building? This is not a clip from movie, this is a real project in China. Due to the trade war, there’s a video of a Chinese guy said, “we both benefit from trade, U.S. and China. But only one of us is using the wealth to build for our people”. that is 🇨🇳

chásè yú 👁‍🗨

2,762,507 Aufrufe • vor 1 Jahr

The recent unprecedented weather event in the UAE and the operational disruptions it caused at #DXB have been a great challenge for us all, but it has been the most challenging for our guests who’ve had to spend much longer than they expected at our terminals. To bring some comfort to them during this time, our team of ground staff and volunteers has worked tirelessly around the clock to deliver more than 73,000 packs of snacks and water. We understand the frustration and distress that the past few days have caused many travellers, and we thank you all for your patience and understanding as our operations recover. Please know that your welfare is, and will always continue to be, our number one priority.

The recent unprecedented weather event in the UAE and the operational disruptions it caused at #DXB have been a great challenge for us all, but it has been the most challenging for our guests who’ve had to spend much longer than they expected at our terminals. To bring some comfort to them during this time, our team of ground staff and volunteers has worked tirelessly around the clock to deliver more than 73,000 packs of snacks and water. We understand the frustration and distress that the past few days have caused many travellers, and we thank you all for your patience and understanding as our operations recover. Please know that your welfare is, and will always continue to be, our number one priority.

DXB

82,339 Aufrufe • vor 2 Jahren

Al‑Qaeda Isn’t Finished. They’re Intent on Turning Past Failures into Success. One of the most important things people miss about al‑Qaeda is this: They don’t abandon failed plots. They recycle them. Their current U.S. homeland strategy is built on bringing old failures back, and this time, making them succeed. Look at the pattern: They hit the World Trade Center in 1993 and failed to bring it down. Eight years later, they came back and finished the job. The same mindset applies to everything else al‑Qaeda tried and couldn’t pull off: Project Bojinka was the original blueprint for using commercial aviation as a weapon. Parts of it failed in the 1990s. They brought the idea back and used it to build 9/11. They still believe Bojinka must be completed. That is why the aviation plot is back. None of these ideas are over. The group’s current U.S. homeland plot is not new, it is simply being fulfilled by the next generation of al-Qaeda. It is a direct extension of what they attempted before, only now they intend to turn every past failure into a success. Yes, you read that right. Every. Single. One. Abu Bakr Naji, al‑Qaeda strategist and doctrinal advisor, author of The Management of Savagery, believed failure was part of a longer-term strategy, not a terminal endpoint. In his framework, setbacks aren’t the end of jihad, just a step in escalation, refinement, and eventual success. He wrote: “If we fail—we seek refuge with God from that—it does not mean an end of the matter. Rather, this failure will lead to an increase in savagery.” Understanding this is key: the next attack will hit harder. Our intelligence community knows how each plot failed before. So why can’t they thwart them now?

Al‑Qaeda Isn’t Finished. They’re Intent on Turning Past Failures into Success. One of the most important things people miss about al‑Qaeda is this: They don’t abandon failed plots. They recycle them. Their current U.S. homeland strategy is built on bringing old failures back, and this time, making them succeed. Look at the pattern: They hit the World Trade Center in 1993 and failed to bring it down. Eight years later, they came back and finished the job. The same mindset applies to everything else al‑Qaeda tried and couldn’t pull off: Project Bojinka was the original blueprint for using commercial aviation as a weapon. Parts of it failed in the 1990s. They brought the idea back and used it to build 9/11. They still believe Bojinka must be completed. That is why the aviation plot is back. None of these ideas are over. The group’s current U.S. homeland plot is not new, it is simply being fulfilled by the next generation of al-Qaeda. It is a direct extension of what they attempted before, only now they intend to turn every past failure into a success. Yes, you read that right. Every. Single. One. Abu Bakr Naji, al‑Qaeda strategist and doctrinal advisor, author of The Management of Savagery, believed failure was part of a longer-term strategy, not a terminal endpoint. In his framework, setbacks aren’t the end of jihad, just a step in escalation, refinement, and eventual success. He wrote: “If we fail—we seek refuge with God from that—it does not mean an end of the matter. Rather, this failure will lead to an increase in savagery.” Understanding this is key: the next attack will hit harder. Our intelligence community knows how each plot failed before. So why can’t they thwart them now?

Sarah Adams

94,999 Aufrufe • vor 10 Monaten

🚨 BREAKING: President Trump announces he will be appointing a HIGH IQ "AI CZAR" and launches the "AI FORCE" Trump says we will UNLEASH AI and that the propaganda will fail All of this will be geared towards not only BUSTING anti-AI hoaxes but keeping America number one. LET'S GO! 🔥 "I am forming the AI Force, much like I did Space Force, which has been a tremendous SUCCESS, in my First Term. To that end, I will be announcing, in the near future, the AI “Czar” — Only High I.Q. individuals need apply! AI is the next Industrial Revolution, or Internet, but will be even larger and more impactful, possibly as much as 25% of our Country’s GDP. We are leading China, and the rest of the World, and I intend to keep it that way!" "Over the years, there have been many Hoaxes, all generated by the Radical Left Dumocrats, for purposes of destroying our Country. RUSSIA, RUSSIA, RUSSIA, UKRAINE, UKRAINE, UKRAINE, Global Warming, Impeachment Hoax 1, Impeachment Hoax 2..." "Now, the decimation, or destruction, of AI, commonly known as Artificial Intelligence — And I, as President of the United States, will not stand by and let this happen." "It all began with an attack on our Data Centers, until people realized how wealthy and prestigious they were for the Communities in which they were built." "Higher Salaries, Lower Taxes, and Safer Streets, was the result, and the crazed Data Center attack has largely failed, so now, in much the same way as they changed the term “Global Warming” to “Climate Change,” in that it covers a much larger “territory” of doubt, they are going straight at AI. We will not in any way hinder or stifle the Growth of this incredible Industry." "Rather, we will cherish it, help it, and watch over it, as it grows! However, we will also be looking for BAD, and we can do that, very easily, with our already existing Criminal and Civil Justice System."

🚨 BREAKING: President Trump announces he will be appointing a HIGH IQ "AI CZAR" and launches the "AI FORCE" Trump says we will UNLEASH AI and that the propaganda will fail All of this will be geared towards not only BUSTING anti-AI hoaxes but keeping America number one. LET'S GO! 🔥 "I am forming the AI Force, much like I did Space Force, which has been a tremendous SUCCESS, in my First Term. To that end, I will be announcing, in the near future, the AI “Czar” — Only High I.Q. individuals need apply! AI is the next Industrial Revolution, or Internet, but will be even larger and more impactful, possibly as much as 25% of our Country’s GDP. We are leading China, and the rest of the World, and I intend to keep it that way!" "Over the years, there have been many Hoaxes, all generated by the Radical Left Dumocrats, for purposes of destroying our Country. RUSSIA, RUSSIA, RUSSIA, UKRAINE, UKRAINE, UKRAINE, Global Warming, Impeachment Hoax 1, Impeachment Hoax 2..." "Now, the decimation, or destruction, of AI, commonly known as Artificial Intelligence — And I, as President of the United States, will not stand by and let this happen." "It all began with an attack on our Data Centers, until people realized how wealthy and prestigious they were for the Communities in which they were built." "Higher Salaries, Lower Taxes, and Safer Streets, was the result, and the crazed Data Center attack has largely failed, so now, in much the same way as they changed the term “Global Warming” to “Climate Change,” in that it covers a much larger “territory” of doubt, they are going straight at AI. We will not in any way hinder or stifle the Growth of this incredible Industry." "Rather, we will cherish it, help it, and watch over it, as it grows! However, we will also be looking for BAD, and we can do that, very easily, with our already existing Criminal and Civil Justice System."

Eric Daugherty

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Our community hasn't just been stress testing Devnet -> they've been finding bugs, flagging edge cases, and making real contributions to the Percolator risk engine. That feedback loop is why we ship better. And while all of this is happening -> we've been quietly testing Mainnet flows. Toly built the Percolator risk engine. We're building the infrastructure on Solana that brings it to life. First look at the Mainnet trade UI 👇

Our community hasn't just been stress testing Devnet -> they've been finding bugs, flagging edge cases, and making real contributions to the Percolator risk engine. That feedback loop is why we ship better. And while all of this is happening -> we've been quietly testing Mainnet flows. Toly built the Percolator risk engine. We're building the infrastructure on Solana that brings it to life. First look at the Mainnet trade UI 👇

Percolator

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This is a formal warning to the City of Chicago City of Chicago and to the entities that operate Daley Plaza Daley Center, Public Building Commission and Transwestern. The Serbian community has deep roots in this city since its earliest days. Chicagoland is home to the largest Serbian community outside of Serbia and the Balkans. We are a huge, longstanding, and proud community in this city and we will not accept being disregarded or insulted. Without any consultation with our community, a decision was made to raise the flag of the terrorist and criminal “Republic of Kosovo” at Daley Plaza. This is an occupied territory that remains deeply painful for the Serbian people as this land is the centerpiece of our religion, culture and identity. For our community, this act is not symbolic or fun, it is a political statement that directly insults us. This action is unacceptable. If this terrorist flag of so called Republic of Kosovo is raised again in our city without dialogue or consideration of our community, you should expect a highly visible public protest at levels you’ve never seen before. We demand that this issue be addressed immediately. Engage with our community. Show respect for the people who have built this city. Do not repeat this mistake. Do not think to insult us like this ever again.

This is a formal warning to the City of Chicago City of Chicago and to the entities that operate Daley Plaza Daley Center, Public Building Commission and Transwestern. The Serbian community has deep roots in this city since its earliest days. Chicagoland is home to the largest Serbian community outside of Serbia and the Balkans. We are a huge, longstanding, and proud community in this city and we will not accept being disregarded or insulted. Without any consultation with our community, a decision was made to raise the flag of the terrorist and criminal “Republic of Kosovo” at Daley Plaza. This is an occupied territory that remains deeply painful for the Serbian people as this land is the centerpiece of our religion, culture and identity. For our community, this act is not symbolic or fun, it is a political statement that directly insults us. This action is unacceptable. If this terrorist flag of so called Republic of Kosovo is raised again in our city without dialogue or consideration of our community, you should expect a highly visible public protest at levels you’ve never seen before. We demand that this issue be addressed immediately. Engage with our community. Show respect for the people who have built this city. Do not repeat this mistake. Do not think to insult us like this ever again.

Serbian National Defense - Српска народна одбрана

33,219 Aufrufe • vor 7 Monaten

🔥 Phoenix is officially live on Solaris AI Flow. You can now trade Phoenix perps inside a Solaris AI workflow. No code. Drop a node onto the canvas, pick an operation, and wire it to anything: AI signals, price feeds, schedules, alerts. The full order-book DEX from Ellipsis Labs, now programmable. Built so you can trade with confidence: ✦ Paper mode is on by default. Every order is checked and simulated against the live order book, real depth and real slippage, but nothing is signed or broadcast. ✦ Paper behaves exactly like Live. If an order would be rejected on-chain, it is rejected in simulation too. No false fills, no surprises. ✦ Going Live is one switch, and it asks for confirmation before any real funds move. Build it. Test it. Trade it. A full perps strategy, proven on paper before a single dollar moves. 30 operations in one node: ✦ Read live markets, order book depth, candles, and funding rates ✦ Track your positions, collateral, and PnL, realized and unrealized ✦ Place limit, market, and stop-loss orders, plus conditional triggers ✦ Cancel orders, manage margin, and move collateral, all from the workflow No scripts. No backend. No terminal to babysit. Just a workflow that trades. You can try it for free. Demo + Link down below 👇

🔥 Phoenix is officially live on Solaris AI Flow. You can now trade Phoenix perps inside a Solaris AI workflow. No code. Drop a node onto the canvas, pick an operation, and wire it to anything: AI signals, price feeds, schedules, alerts. The full order-book DEX from Ellipsis Labs, now programmable. Built so you can trade with confidence: ✦ Paper mode is on by default. Every order is checked and simulated against the live order book, real depth and real slippage, but nothing is signed or broadcast. ✦ Paper behaves exactly like Live. If an order would be rejected on-chain, it is rejected in simulation too. No false fills, no surprises. ✦ Going Live is one switch, and it asks for confirmation before any real funds move. Build it. Test it. Trade it. A full perps strategy, proven on paper before a single dollar moves. 30 operations in one node: ✦ Read live markets, order book depth, candles, and funding rates ✦ Track your positions, collateral, and PnL, realized and unrealized ✦ Place limit, market, and stop-loss orders, plus conditional triggers ✦ Cancel orders, manage margin, and move collateral, all from the workflow No scripts. No backend. No terminal to babysit. Just a workflow that trades. You can try it for free. Demo + Link down below 👇

Solaris AI

10,075 Aufrufe • vor 4 Monaten

Done and delivered 🇪🇺🇺🇸 European Parliament has just approved the EU–US trade deal. We promised certainty, clarity and predictability for businesses, workers, consumers and investors on both sides of the Atlantic. And today we have done just that. This is more than a trade deal. It is an investment in the future of the EU–US partnership and our continued strong transatlantic bond. Thank you to Bernd Lange for leading the European Parliament team throughout this process.

Done and delivered 🇪🇺🇺🇸 European Parliament has just approved the EU–US trade deal. We promised certainty, clarity and predictability for businesses, workers, consumers and investors on both sides of the Atlantic. And today we have done just that. This is more than a trade deal. It is an investment in the future of the EU–US partnership and our continued strong transatlantic bond. Thank you to Bernd Lange for leading the European Parliament team throughout this process.

Roberta Metsola

17,391 Aufrufe • vor 3 Monaten

This is sickening, if true, regarding the Baptist Church Hospital attack: - The Rocket that hit the hospital caused the media, namely Al Jazeera, to blame the IDF. - This caused massive protests and dangers to the embassy in Amman, Jordan (as seen below). - This caused US Politicians to blame the IDF. - Now the IDF states that the attack was "unequivocally a failed rocket, intended to fall on Israel," and there is evidence which appears to back up this theory. This is why misinformation is so harmful. If you believe the IDF (will be confirmed or refuted shortly) then this disinformation could literally cause death.

This is sickening, if true, regarding the Baptist Church Hospital attack: - The Rocket that hit the hospital caused the media, namely Al Jazeera, to blame the IDF. - This caused massive protests and dangers to the embassy in Amman, Jordan (as seen below). - This caused US Politicians to blame the IDF. - Now the IDF states that the attack was "unequivocally a failed rocket, intended to fall on Israel," and there is evidence which appears to back up this theory. This is why misinformation is so harmful. If you believe the IDF (will be confirmed or refuted shortly) then this disinformation could literally cause death.

Brian Krassenstein

1,909,487 Aufrufe • vor 2 Jahren

The Crown Prince called, and a nation answered with fire and defiance from one end of Iran to the other. The regime thugs came with violence and intimidation. It changed nothing. Chaharshanbe Suri has always belonged to Iran like this, ancient, joyous, untamed. For 47 years the terrorist Islamic Regime occupying Iran has tried to bury our old traditions by beating, threatening, and humiliating people for celebrating them, and for 47 years it has failed. Because these traditions are not decoration to us. They are memory. They are inheritance. They are proof that Iran is older than this occupation and will outlive it too. Our culture is not Islamism, not the regime’s imported sickness, not the ideology of men who fear joy, fire, music, and the open street. Our culture is Iran. We are Iranians. Children of Cyrus the Great. And just as we answered the call last night, we will answer again when the final call comes. Long live #Irán Javid shah.

The Crown Prince called, and a nation answered with fire and defiance from one end of Iran to the other. The regime thugs came with violence and intimidation. It changed nothing. Chaharshanbe Suri has always belonged to Iran like this, ancient, joyous, untamed. For 47 years the terrorist Islamic Regime occupying Iran has tried to bury our old traditions by beating, threatening, and humiliating people for celebrating them, and for 47 years it has failed. Because these traditions are not decoration to us. They are memory. They are inheritance. They are proof that Iran is older than this occupation and will outlive it too. Our culture is not Islamism, not the regime’s imported sickness, not the ideology of men who fear joy, fire, music, and the open street. Our culture is Iran. We are Iranians. Children of Cyrus the Great. And just as we answered the call last night, we will answer again when the final call comes. Long live #Irán Javid shah.

🇮🇷Decado🇮🇷

28,905 Aufrufe • vor 6 Monaten

𝐓𝐄𝐍 𝐌𝐎𝐍𝐓𝐇𝐒, 𝐒𝐓𝐈𝐋𝐋 𝐇𝐄𝐑𝐄. This has definitely been the hardest month to date, filled with challenges that tested our patience, faith, and love. But we remain grateful for the strength to stay, the courage to continue, and the bond that keeps us standing together. After all, we only have each other. In moments of uncertainty, it is this connection that becomes our safe space, our source of comfort, and our reminder of why we choose to stay. Let this milestone be a reminder that every struggle we face together makes us stronger. Thank you for the understanding, the support, and the unwavering presence. Here’s to moving forward with hope in our hearts and appreciation for one another. ✨ All our love for Will and Bianca! Happy 10th monthsary, WillCatchers. 🩵🩷

𝐓𝐄𝐍 𝐌𝐎𝐍𝐓𝐇𝐒, 𝐒𝐓𝐈𝐋𝐋 𝐇𝐄𝐑𝐄. This has definitely been the hardest month to date, filled with challenges that tested our patience, faith, and love. But we remain grateful for the strength to stay, the courage to continue, and the bond that keeps us standing together. After all, we only have each other. In moments of uncertainty, it is this connection that becomes our safe space, our source of comfort, and our reminder of why we choose to stay. Let this milestone be a reminder that every struggle we face together makes us stronger. Thank you for the understanding, the support, and the unwavering presence. Here’s to moving forward with hope in our hearts and appreciation for one another. ✨ All our love for Will and Bianca! Happy 10th monthsary, WillCatchers. 🩵🩷

WILLCA OFFICIAL

40,317 Aufrufe • vor 7 Monaten

Hi everyone Great news, we have sucesfully cashed out all the money from the wallet that the mom gave us, and this morning me and my brother, went to their village to give them the money in exchange for the solanas raised It took some effort and help from 28. Jun to prove that the crypto community actually raised all this money, but luckily they managed to pull it off. With the 19 000$ that we have raised + what 28Jun has raised, we have purchased a new home for them in their village ( il get the photos of that too) , as this one was not in great condition and it is too small for such a big family. I would like to thank u all for participating and proving that when its a good cause, we can all come together and help, no matter the country, race or nationality Here are some photos i took from this beautiful family

Hi everyone Great news, we have sucesfully cashed out all the money from the wallet that the mom gave us, and this morning me and my brother, went to their village to give them the money in exchange for the solanas raised It took some effort and help from 28. Jun to prove that the crypto community actually raised all this money, but luckily they managed to pull it off. With the 19 000$ that we have raised + what 28Jun has raised, we have purchased a new home for them in their village ( il get the photos of that too) , as this one was not in great condition and it is too small for such a big family. I would like to thank u all for participating and proving that when its a good cause, we can all come together and help, no matter the country, race or nationality Here are some photos i took from this beautiful family

Rell

75,916 Aufrufe • vor 9 Monaten

Good morning to everyone in Massachusetts who now sees that there is hope in our state. The Charlie Kirk Vigil at Boston Common last night brought together so many patriots, united in prayer, strength, and determination for change. Thank you to every single person who showed up. You reminded us that we are not alone. One of the most inspiring parts of the night was hearing from the young speakers who talked about the impact Charlie had on their lives and why they feel called to get involved. Their words were powerful and showed that the next generation is ready to carry this mission forward. But this is just the beginning. We need to take that same energy back to our towns, our schools, and our communities. Get involved, speak up, and be part of the movement for a better Massachusetts. This is exactly what Charlie would have wanted. Not just a moment of mourning, but a spark that ignites real action. Together, we can honor his legacy by standing up for our values and shaping the future of our state.

Good morning to everyone in Massachusetts who now sees that there is hope in our state. The Charlie Kirk Vigil at Boston Common last night brought together so many patriots, united in prayer, strength, and determination for change. Thank you to every single person who showed up. You reminded us that we are not alone. One of the most inspiring parts of the night was hearing from the young speakers who talked about the impact Charlie had on their lives and why they feel called to get involved. Their words were powerful and showed that the next generation is ready to carry this mission forward. But this is just the beginning. We need to take that same energy back to our towns, our schools, and our communities. Get involved, speak up, and be part of the movement for a better Massachusetts. This is exactly what Charlie would have wanted. Not just a moment of mourning, but a spark that ignites real action. Together, we can honor his legacy by standing up for our values and shaping the future of our state.

Chester Tam

31,347 Aufrufe • vor 1 Jahr

🇺🇸 —Trump: “WE DON’T NEED ANYTHING FROM CANADA.” Just hours later: 🇺🇸 —Trump: “We need aluminum in this country. We don’t have it. We get it all from Canada for the most part, and we need it badly.” 🇨🇦 —Carney: “If the US wants Canadian products, it will have to pay more for them now. Everything the US once imported cheaply from Canada will come at a higher cost.”👏 🇨🇦 —Carney is playing this trade war smartly — and in the end, this trade war is going to cost the US far more than it costs Canada. 🔥

🇺🇸 —Trump: “WE DON’T NEED ANYTHING FROM CANADA.” Just hours later: 🇺🇸 —Trump: “We need aluminum in this country. We don’t have it. We get it all from Canada for the most part, and we need it badly.” 🇨🇦 —Carney: “If the US wants Canadian products, it will have to pay more for them now. Everything the US once imported cheaply from Canada will come at a higher cost.”👏 🇨🇦 —Carney is playing this trade war smartly — and in the end, this trade war is going to cost the US far more than it costs Canada. 🔥

Robert Bruce

508,088 Aufrufe • vor 29 Tagen

This week I switched to Titan COMPLETELY What’s the big deal? Simple. It gives me the best swap rates. > It outperforms Jupiter, Raydium, Orca, and others by checking all of them and routing your trade through the best possible path. That is what Meta-Routing is... And they went further: > Their Prime Mode auto-tunes your slippage, fees, and landing priority to avoid failed or sandwiched trades. If the data holds (claims of 75% better execution), Titan could quietly become the most efficient swap tool on Solana. You'd better swap today 👇

This week I switched to Titan COMPLETELY What’s the big deal? Simple. It gives me the best swap rates. > It outperforms Jupiter, Raydium, Orca, and others by checking all of them and routing your trade through the best possible path. That is what Meta-Routing is... And they went further: > Their Prime Mode auto-tunes your slippage, fees, and landing priority to avoid failed or sandwiched trades. If the data holds (claims of 75% better execution), Titan could quietly become the most efficient swap tool on Solana. You'd better swap today 👇

Mango

67,829 Aufrufe • vor 11 Monaten

As a graphics engine coder I think when you look at a flickering bug like this one in the video below it’s not immediately obvious what is going on. The key here is observation - to study this flickering/bugged render carefully - what do we see? Firstly for me it was very obvious that nearly all of the scene shadows were flashing on and off - but (but!) there was a secondary issue where some buildings and parts of the sky were also flashing purple. Hmmmm. Interesting. I initially thought then this might be two separate bugs - but because the sky purple element could only based on full screen post fx and not 3D rendering I looked at this first with a few GPU captures to step through all our post processing to find the rendering stage which made these pixels turn purple: When I did this I found the colour 3D texture LUT grading that makes our different biomes have unique colour palettes was going very wrong - colours near 0 or 1 were wrapping and making the purple elements that we see in the said sky and base parts. The only way this could happen was if the texture was corrupt (which it was not) or if the 3D texture sampling was wrapping and not clamped as intended. That was the Eureka moment - because if the post fx had the wrong texture sampler then the disappearing shadows which also require an exact texture sampler for comparing depth might be also wrong because of the same kind of texture sampling issue! So with this idea that the engine was using the wrong texture samplers, but only in very high draw call scenes like the big base here I the looked at some engine limits and found the bug very quickly - a circular dx12 descriptor buffer for samplers running out over multiple frames, reusing the wrong data for new scenes inflight. Hence the flickering, as the GPU randomly got wrong samplers for some post textures or shadow depth. Easy to fix with triple limits for future expansion and also adding an assert/debug spam in case this limit is ever reached again - QA testers would see this message and report if they ever saw a flicker with this style of bug. My bug and my bad from 2017 porting NMS to DX12 without foreseeing how massively complex bases and our game would grow.

As a graphics engine coder I think when you look at a flickering bug like this one in the video below it’s not immediately obvious what is going on. The key here is observation - to study this flickering/bugged render carefully - what do we see? Firstly for me it was very obvious that nearly all of the scene shadows were flashing on and off - but (but!) there was a secondary issue where some buildings and parts of the sky were also flashing purple. Hmmmm. Interesting. I initially thought then this might be two separate bugs - but because the sky purple element could only based on full screen post fx and not 3D rendering I looked at this first with a few GPU captures to step through all our post processing to find the rendering stage which made these pixels turn purple: When I did this I found the colour 3D texture LUT grading that makes our different biomes have unique colour palettes was going very wrong - colours near 0 or 1 were wrapping and making the purple elements that we see in the said sky and base parts. The only way this could happen was if the texture was corrupt (which it was not) or if the 3D texture sampling was wrapping and not clamped as intended. That was the Eureka moment - because if the post fx had the wrong texture sampler then the disappearing shadows which also require an exact texture sampler for comparing depth might be also wrong because of the same kind of texture sampling issue! So with this idea that the engine was using the wrong texture samplers, but only in very high draw call scenes like the big base here I the looked at some engine limits and found the bug very quickly - a circular dx12 descriptor buffer for samplers running out over multiple frames, reusing the wrong data for new scenes inflight. Hence the flickering, as the GPU randomly got wrong samplers for some post textures or shadow depth. Easy to fix with triple limits for future expansion and also adding an assert/debug spam in case this limit is ever reached again - QA testers would see this message and report if they ever saw a flicker with this style of bug. My bug and my bad from 2017 porting NMS to DX12 without foreseeing how massively complex bases and our game would grow.

Martin Griffiths

72,855 Aufrufe • vor 1 Jahr