🌈 炸裂！RenoDX 能给那些压根没做过 HDR 的 DirectX 老游戏，硬生生改出 HDR 画面。 GitHub 上 3621 star，最近冲上了 GitHub 热榜，围着它长出来的社区 mod 已经覆盖上百款游戏。 买了台 HDR 显示器，回头发现游戏库里一半的游戏根本不支持，打开还是灰扑扑的 SDR 画面，亮部糊成一团。厂商不可能回头给十年前的游戏补这个，玩家能做的只有认命。 RenoDX 的全称是 Renovation Engine for DirectX Games，走的是 ReShade 的插件系统，不用针对某个版本的 exe 单独打补丁，兼容面因此比传统改法宽得多。它能替换游戏里的着色器、往里注入缓冲区、加叠加层、升级交换链和纹理资源，还能把你调好的设置写回磁盘，下次开游戏直接生效。 除了主框架，仓库里还附了几个能单独用的小工具：renodx-fpslimiter 管限帧，renodx-devkit 帮你自己写插件，decomp.exe 是个 Shader Model 6.0 以上的反编译器，想研究游戏渲染的可以直接上手。作者 Carlos Lopez 还维护着一个 Discord 社区和一份记录所有 mod 的 Wiki 页面。 老游戏的画质天花板，原来是可以被玩家自己抬高的。 GitHub：

和Quant Alex @StochAlex07 讨论： SABR Theta与Spot Theta+Vol Theta+Cross Theta的异同与应用，以及SABR模型自洽性分析。 **English Summary of the Chat** **SABR Theta vs Spot Theta + Vol Theta + Cross Theta** The conversation between **Alex Wu** (white bubbles) and **Jeff Liang** (green bubbles) is a technical discussion focused on **SABR Theta versus Total Theta** (i.e., Spot Theta + Cross Theta + Vol Theta), model self-consistency, PDE residual, and the correct definition of SABR Greeks. ### Key Points Discussed: 1. **SABR Gamma = Spot Gamma** (first major question, raised by Jeff) Jeff asked whether SABR Gamma (\(\partial^2 P / \partial F^2\)) is identical to Spot Gamma and whether it includes the dependence of \(\sigma_B\) on \(F\). He also provided the full chain-rule expansion of SABR Gamma in terms of Black-76 Greeks. Alex confirmed the understanding and **later affirmed in code** that this is exactly how SABR Gamma is implemented in their system. 2. **SABR Theta vs Total Theta and Model Self-Consistency** (main topic, led by Jeff) Jeff shared a clear 3-point understanding: - SABR Theta is computed directly via the SABR approximation formula to obtain \(\sigma_B\), then applying the Black-76 chain rule: \(\partial P/\partial t =\) BS_Theta(\(\sigma_B\)) + BS_Vega \(\cdot \partial\sigma_B/\partial t\). - Total Theta is the exact decomposition from the SABR PDE (Spot Theta + Cross Theta + Vol Theta). - When the model is **fully self-consistent** (Residual = \(\partial P/\partial t + \mathcal{L}P = 0\)), SABR Theta = Total Theta; otherwise the difference is the unexplained PnL caused by the approximation error in the Hagan formula (especially pronounced in long-dated, high vol-of-vol, or high-skew options). 3. **Practical Implication – Theta Decomposition Decision** (comment by Alex) Alex noted that whether to perform Theta decomposition depends on the risk-management approach: - Without decomposition → use SABR Gamma vs. dP/dt. - With decomposition → SABR Gamma maps to Spot Theta, Vanna to Cross Theta, and Volga to Vol Theta. **Overall Tone**: The discussion is highly technical and collaborative. Jeff drives the conversation by asking clarifying questions and presenting a well-structured 3-point summary of his recent study. Alex provides confirmations, practical insights, and code-level validation. Both participants demonstrate a strong command of SABR model nuances, particularly the relationship between approximation error, PDE residual, and real-world risk management.

December’s Preview❤2022/12 服裝一覽 Tier1★ 草神納西妲 Tier2★ 逢坂大河 老虎兔女郎 Tier3★ Rurudo天使警察 VIP★ 白老虎內衣 VIP Bonus★ 逢坂大河 老虎裝 ★ Patre♡n ★ ★Patre♡n台灣匯款訂閱表單 ★ 虎年最後的波紋૮ ̳ᴗ ̫ ᴗ ̳ა❤︎

December's Patreon TierVIP preview! Please look forward to this month 十二月份的等級VIP預告! 期待這個月吧! patreon : Gumroad: IG: #雷電將軍# #原神# #cosplay#

➼ December's Patr0n—③◂ ➼12月獎勵③ ➼生日聚會圓滿！！ 黑江雫來了！🔥 充滿祝福的12月 今天的生日聚會也圓滿結束了！🌟 謝謝大家送我的禮物>""< 有很欠K的禮物，也有很暖心的禮物 謝謝你們每一年都陪著我<3

➼ December's Patr0n◂ December is my month! Because I was born in December. I hope you like this month's rewards~ I also look forward to a better life for all of us in 2023! 12月來啦~🌟 我是12月誕生的哦！ 希望這個月的獎勵大家也很喜歡~ 也期盼2023年我們大家都能過得更好！