<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>Rendering on Umbrella Coffee</title><link>https://rubatotree.github.io/blog/tags/rendering/</link><description>Recent content in Rendering on Umbrella Coffee</description><image><title>Umbrella Coffee</title><url>https://rubatotree.github.io/blog/images/og-default.png</url><link>https://rubatotree.github.io/blog/images/og-default.png</link></image><generator>Hugo</generator><language>en-us</language><lastBuildDate>Sun, 07 Jun 2026 00:00:00 +0800</lastBuildDate><atom:link href="https://rubatotree.github.io/blog/tags/rendering/index.xml" rel="self" type="application/rss+xml"/><item><title>图形已死，all in AI具身 II: 机器人会梦到怎样的现实呢</title><link>https://rubatotree.github.io/blog/posts/embodied-notes-2/</link><pubDate>Sun, 07 Jun 2026 00:00:00 +0800</pubDate><guid>https://rubatotree.github.io/blog/posts/embodied-notes-2/</guid><description>&lt;p class="typst-parbreak"&gt;&lt;/p&gt;
&lt;div style="display: grid; place-items: start center;"&gt;
&lt;figure&gt;
&lt;div style="display: grid; place-items: start center;"&gt;&lt;img src="https://rubatotree.github.io/blog/images/embodied-notes-2/teaser.png" alt loading="lazy"&gt;&lt;/div&gt;
&lt;div style="display: grid; place-items: start center;"&gt;
&lt;figcaption&gt;图 1 玩音乐的最终归宿是转行具身智能。&lt;a id="loc-1" href="#loc-3" role="doc-biblioref"&gt;[1]&lt;/a&gt;&lt;/figcaption&gt;
&lt;/div&gt;
&lt;/figure&gt;
&lt;/div&gt;
&lt;p class="typst-parbreak"&gt;&lt;/p&gt;
&lt;p&gt;TODO&lt;/p&gt;
&lt;div class="toc" style="display: none"&gt;&lt;details&gt;&lt;summary&gt;Table of Contents&lt;/summary&gt;&lt;div&gt;&lt;nav role="doc-toc"&gt;&lt;ol style="list-style-type: none"&gt;&lt;li&gt;&lt;p&gt;&lt;/p&gt;&lt;ul&gt;&lt;li&gt;&lt;a href="#loc-2"&gt;References&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;&lt;p&gt;&lt;/p&gt;&lt;/li&gt;&lt;/ol&gt;&lt;/nav&gt;&lt;/div&gt;&lt;/details&gt;&lt;/div&gt;
&lt;section role="doc-bibliography"&gt;
&lt;h2 id="loc-2"&gt;References&lt;/h2&gt;
&lt;ul style="list-style-type: none"&gt;
&lt;li id="loc-3"&gt;&lt;span class="prefix"&gt;&lt;a href="#loc-1" role="doc-backlink"&gt;[1]&lt;/a&gt;&lt;/span&gt; 山下清悟, “超かぐや姫！.” [Online]. Available: &lt;a href="https://www.netflix.com/title/81756595" target="_blank" rel="noopener noreferrer"&gt;&lt;span style="color: #59a4ff;"&gt;&lt;span style="text-decoration: underline"&gt;https://www.netflix.com/title/81756595&lt;/span&gt;&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;span class="prefix"&gt;[2]&lt;/span&gt; J. Park and H. Kang, “RenderMem: Rendering as Spatial Memory Retrieval.” [Online]. Available: &lt;a href="https://arxiv.org/abs/2603.14669" target="_blank" rel="noopener noreferrer"&gt;&lt;span style="color: #59a4ff;"&gt;&lt;span style="text-decoration: underline"&gt;https://arxiv.org/abs/2603.14669&lt;/span&gt;&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;span class="prefix"&gt;[3]&lt;/span&gt; R. I. C. Muchacho and F. T. Pokorny, “Walk on Spheres for PDE-based Path Planning.” [Online]. Available: &lt;a href="https://arxiv.org/abs/2406.01713" target="_blank" rel="noopener noreferrer"&gt;&lt;span style="color: #59a4ff;"&gt;&lt;span style="text-decoration: underline"&gt;https://arxiv.org/abs/2406.01713&lt;/span&gt;&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;span class="prefix"&gt;[4]&lt;/span&gt; C. Jambon, M. S. Nabizadeh, and M. Konaković Luković, “Walk on Decomposed Subdomains: A Hybrid Monte Carlo–Deterministic Solver for Elliptic PDEs,” &lt;em&gt;ACM Trans. Graph.&lt;/em&gt;, vol. 45, no. 4, July 2026, doi: &lt;a href="https://doi.org/10.1145/3811340" target="_blank" rel="noopener noreferrer"&gt;&lt;span style="color: #59a4ff;"&gt;&lt;span style="text-decoration: underline"&gt;10.1145/3811340&lt;/span&gt;&lt;/span&gt;&lt;/a&gt;.&lt;/li&gt;
&lt;li&gt;&lt;span class="prefix"&gt;[5]&lt;/span&gt; Heskey0, “具身智能 - 9 个方向讲透 2025-2026 灵巧手智能.” [Online]. Available: &lt;a href="https://zhuanlan.zhihu.com/p/2046746760459171551" target="_blank" rel="noopener noreferrer"&gt;&lt;span style="color: #59a4ff;"&gt;&lt;span style="text-decoration: underline"&gt;https://zhuanlan.zhihu.com/p/2046746760459171551&lt;/span&gt;&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;/section&gt;</description></item><item><title>SIGGRAPH 2026 论文笔记 II: Rendering</title><link>https://rubatotree.github.io/blog/posts/sig26-paper-notes-2/</link><pubDate>Thu, 28 May 2026 00:00:00 +0800</pubDate><guid>https://rubatotree.github.io/blog/posts/sig26-paper-notes-2/</guid><description>&lt;h2 id="loc-1"&gt;1. 材质，外观，可微渲染&lt;/h2&gt;
&lt;h3 id="loc-2"&gt;Fiber-level Woven Fabric Capture from a Single Microscopic Image &lt;a id="loc-3" href="#loc-18" role="doc-biblioref"&gt;[1]&lt;/a&gt;&lt;/h3&gt;
&lt;img src="https://rubatotree.github.io/blog/images/sig26-paper-notes/FiberLevel.png" alt loading="lazy"&gt;
&lt;p&gt;&lt;em&gt;另一位助教 &lt;a href="https://jerry-shen0527.github.io/" target="_blank" rel="noopener noreferrer"&gt;&lt;span style="color: #59a4ff;"&gt;&lt;span style="text-decoration: underline"&gt;@JerryShen&lt;/span&gt;&lt;/span&gt;&lt;/a&gt; 的文章之一。这篇没有上 Sig26，只是录进了 ToG，但也放在这里。&lt;/em&gt;&lt;/p&gt;
&lt;p&gt;从单张显微图像通过可微渲染重建织物的纤维级几何和材质。&lt;/p&gt;
&lt;p&gt;对于几何建模了基本可微的五层结构：&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;编织模式 Pattern：平纹、斜纹等纹理模式，直接预设好，用预训练的 CNN 分类；&lt;/li&gt;
&lt;li&gt;中心线层 Yarn Centerline：每根纤维从侧面看高度关于路径长度的函数，用抛物线和圆混合；&lt;/li&gt;
&lt;li&gt;纤维截面层 Cross-sectional Fiber Distribution：在中心线周围生成 &lt;span role="math"&gt;&lt;svg class="typst-frame" style="overflow: visible; width: 0.8779999999999999em; height: 0.683em;" viewBox="0 0 11.853 9.2205" width="11.853pt" height="9.2205pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:h5="http://www.w3.org/1999/xhtml"&gt;&lt;g&gt;&lt;g class="typst-text" transform="matrix(1 0 0 -1 0 9.2205)"&gt;&lt;use xlink:href="#g39F65B41E3D7ECE906702A35E9669C25" x="0" y="0" fill="#000000" fill-rule="nonzero"/&gt;&lt;/g&gt;&lt;/g&gt;&lt;defs id="glyph"&gt;&lt;symbol id="g39F65B41E3D7ECE906702A35E9669C25" overflow="visible"&gt;&lt;path d="M 0 0m 11.448 1.9305 c 0 0.13499999 -0.121500015 0.13499999 -0.1619997 0.13499999 c -0.13500023 0 -0.13500023 -0.040499926 -0.20250034 -0.24300003 c -0.20249939 -0.7155 -0.63449955 -1.674 -1.3769999 -1.674 c -0.22949982 0 -0.3239994 0.135 -0.3239994 0.44550002 c 0 0.33749998 0.121500015 0.66150004 0.24300003 0.95849997 c 0.2564993 0.70200014 0.8234997 2.2005 0.8234997 2.97 c 0 0.87750006 -0.53999996 1.4445 -1.5524998 1.4445 c -1.0125003 0 -1.7010002 -0.59399986 -2.2005005 -1.3094997 c -0.013499737 0.17549992 -0.0539999 0.6345 -0.43200016 0.9584999 c -0.33749962 0.2835002 -0.7694998 0.35099983 -1.1069999 0.35099983 c -1.2149999 0 -1.8764999 -0.86399984 -2.106 -1.1745 c -0.067500114 0.76950026 -0.6345 1.1745 -1.2420001 1.1745 c -0.62099993 0 -0.8775 -0.52649975 -0.999 -0.7694998 c -0.24299997 -0.47250032 -0.4185 -1.269 -0.4185 -1.3095002 c 0 -0.13499999 0.162 -0.13499999 0.162 -0.13499999 c 0.13500005 0 0.14850003 0.013499975 0.2295 0.3104999 c 0.22950006 0.9585004 0.49950004 1.6065001 0.9855001 1.6065001 c 0.21599996 0 0.41849995 -0.1079998 0.41849995 -0.6209998 c 0 -0.2835002 -0.040499926 -0.43200016 -0.21599996 -1.1340001 l -0.783 -3.1185002 c -0.040500045 -0.20249999 -0.121500015 -0.513 -0.121500015 -0.5805 c 0 -0.243 0.18900001 -0.36450002 0.3915 -0.36450002 c 0.16199994 0 0.40499997 0.10800001 0.49950004 0.37800002 c 0.013499975 0.026999995 0.17550004 0.66150004 0.2564999 0.999 l 0.29700017 1.215 c 0.08099985 0.29699993 0.16199994 0.5940001 0.22949982 0.9045 l 0.17550015 0.6750002 c 0.20249987 0.41849995 0.918 1.6469998 2.2004998 1.6469998 c 0.6075001 0 0.7290001 -0.4994998 0.7290001 -0.9450002 c 0 -0.33749962 -0.094500065 -0.7154999 -0.20249987 -1.1204998 l -0.37799978 -1.566 c -0.13500023 -0.49950004 -0.14850044 -0.5805 -0.26999998 -1.026 c -0.054000378 -0.27000004 -0.1755004 -0.72900003 -0.1755004 -0.7965 c 0 -0.243 0.18900013 -0.36450002 0.3915 -0.36450002 c 0.41849995 0 0.49950027 0.33750004 0.6075001 0.7695 l 0.80999994 3.2535 c 0.040500164 0.17550015 0.75600004 1.7955 2.2275 1.7955 c 0.5805006 0 0.7290001 -0.4590001 0.7290001 -0.9450002 c 0 -0.7694998 -0.56699944 -2.3084998 -0.8369999 -3.0239997 c -0.121500015 -0.324 -0.17549992 -0.4725001 -0.17549992 -0.74250007 c 0 -0.6345 0.47249985 -1.107 1.1070004 -1.107 c 1.269 0 1.7684994 1.971 1.7684994 2.079 Z "/&gt;&lt;/symbol&gt;&lt;/defs&gt;&lt;/svg&gt;&lt;/span&gt; 根纤维，纤维的螺旋扭转 &lt;span role="math"&gt;&lt;svg class="typst-frame" style="overflow: visible; width: 0.64em; height: 0.683em;" viewBox="0 0 8.64 9.2205" width="8.64pt" height="9.2205pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:h5="http://www.w3.org/1999/xhtml"&gt;&lt;g&gt;&lt;g class="typst-text" transform="matrix(1 0 0 -1 0 9.2205)"&gt;&lt;use xlink:href="#g6D487EE5ECC06F630D6411F35200858D" x="0" y="0" fill="#000000" fill-rule="nonzero"/&gt;&lt;/g&gt;&lt;/g&gt;&lt;defs id="glyph"&gt;&lt;symbol id="g6D487EE5ECC06F630D6411F35200858D" overflow="visible"&gt;&lt;path d="M 0 0m 8.127 5.1705003 c 0 0 -0.01349926 0.13499975 -0.1619997 0.13499975 c -0.13499975 0 -0.13499975 -0.040499687 -0.20249987 -0.28349972 c -0.24300003 -0.8505001 -0.6884999 -1.8765001 -1.323 -2.6730003 v 0.83700013 c 0 2.1195 -1.2555003 2.781 -2.2545004 2.781 c -1.8495 0 -3.6315 -1.9305 -3.6315 -3.8339999 c 0 -1.2555001 0.81 -2.2815 2.187 -2.2815 c 0.8505001 0 1.8225002 0.31050003 2.8485003 1.1340001 c 0.17549992 -0.7155 0.6209998 -1.1340001 1.2284999 -1.1340001 c 0.7154999 0 1.1340003 0.74250007 1.1340003 0.9585 c 0 0.094500005 -0.08100033 0.13500005 -0.16200018 0.13500005 c -0.094500065 0 -0.13500023 -0.040500045 -0.17549992 -0.13500005 c -0.24300003 -0.6615 -0.75600004 -0.6615 -0.75600004 -0.6615 c -0.41849995 0 -0.41849995 1.0530001 -0.41849995 1.3770001 c 0 0.28349996 0 0.31050003 0.13499975 0.47249997 c 1.269 1.593 1.5524998 3.1725001 1.5524998 3.1725001 Z m -2.5919995 -3.834 c -1.1880002 -1.0395 -2.2275002 -1.1880001 -2.7675002 -1.1880001 c -0.81000006 0 -1.2150002 0.6075 -1.2150002 1.4715 c 0 0.6615001 0.35100007 2.1195002 0.783 2.808 c 0.6345 0.98550034 1.3635001 1.2420001 1.8360002 1.2420001 c 1.3365002 0 1.3365002 -1.7685001 1.3365002 -2.8215 c 0 -0.49950004 0 -1.2825 0.02699995 -1.512 Z "/&gt;&lt;/symbol&gt;&lt;/defs&gt;&lt;/svg&gt;&lt;/span&gt;、偏移 &lt;span role="math"&gt;&lt;svg class="typst-frame" style="overflow: visible; width: 1.0978em; height: 0.683em;" viewBox="0 0 14.820300000000001 9.2205" width="14.820300000000001pt" height="9.2205pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:h5="http://www.w3.org/1999/xhtml"&gt;&lt;g&gt;&lt;g class="typst-text" transform="matrix(1 0 0 -1 0 9.2205)"&gt;&lt;use xlink:href="#gB56EE940A3E6922E94D0196ED1F53569" x="0" y="0" fill="#000000" fill-rule="nonzero"/&gt;&lt;/g&gt;&lt;g class="typst-text" transform="matrix(1 0 0 -1 10.246500000000001 12.555000000000001)"&gt;&lt;use xlink:href="#g3A69B5BA14C4FC0AE0508775E710B241" x="0" y="0" fill="#000000" fill-rule="nonzero"/&gt;&lt;/g&gt;&lt;/g&gt;&lt;defs id="glyph"&gt;&lt;symbol id="gB56EE940A3E6922E94D0196ED1F53569" overflow="visible"&gt;&lt;path d="M 0 0m 8.721001 7.4655004 c 0 -0.4590001 -0.21600056 -1.3905001 -0.7425003 -1.9170003 c -0.3510003 -0.35099983 -1.0665002 -0.783 -2.2815003 -0.783 h -1.5120001 l 0.87750006 3.5235004 c 0.08100033 0.3239994 0.121500015 0.45899963 0.37800026 0.49949932 c 0.121500015 0.013500214 0.5534997 0.013500214 0.8234997 0.013500214 c 0.9585004 0 2.4570007 0 2.4570007 -1.3364997 Z m 1.4714994 -6.21 c 0 0.16199994 -0.1619997 0.16199994 -0.1619997 0.16199994 c -0.121500015 0 -0.14850044 -0.094499946 -0.17549992 -0.18900001 c -0.33750057 -0.999 -0.9180002 -1.2285 -1.2285004 -1.2285 c -0.44550037 0 -0.53999996 0.29700002 -0.53999996 0.82350004 c 0 0.41849995 0.08100033 1.107 0.13500023 1.5389999 c 0.026999474 0.18900013 0.0539999 0.44550014 0.0539999 0.6345 c 0 1.0395 -0.9045 1.458 -1.269 1.5930002 c 1.3634996 0.29699993 2.9700003 1.2420001 2.9700003 2.6055002 c 0 1.1610003 -1.2150002 2.0249996 -2.9835005 2.0249996 h -3.8474998 c -0.27000022 0 -0.3915 0 -0.3915 -0.2699995 c 0 -0.14850044 0.12149978 -0.14850044 0.37799978 -0.14850044 c 0 0 0.2835002 0 0.513 -0.026999474 c 0.24300003 -0.027000427 0.36450005 -0.04050064 0.36450005 -0.21600056 c 0 -0.0539999 -0.013499975 -0.09449959 -0.0539999 -0.25650024 l -1.809 -7.2495 c -0.13499999 -0.5265 -0.16200006 -0.63449997 -1.2285001 -0.63449997 c -0.24300003 0 -0.36450005 0 -0.36450005 -0.26999998 c 0 -0.14850001 0.18900001 -0.14850001 0.18900001 -0.14850001 l 1.701 0.0405 l 1.7145 -0.0405 c 0.10800028 0 0.26999998 0 0.26999998 0.27 c 0 0.1485 -0.121500015 0.1485 -0.37799978 0.1485 c -0.49950004 0 -0.87750006 0 -0.87750006 0.24300003 c 0 0.08099997 0.02699995 0.14849997 0.040499926 0.2295 l 0.89100003 3.5775 h 1.6065001 c 1.2284999 0 1.4714999 -0.75600004 1.4714999 -1.2285001 c 0 -0.20249987 -0.1079998 -0.62100005 -0.18900013 -0.93149996 c -0.094500065 -0.37800002 -0.21600008 -0.87750006 -0.21600008 -1.1475 c 0 -1.4580001 1.6200004 -1.4580001 1.7955003 -1.4580001 c 1.1475 0 1.6199999 1.3635001 1.6199999 1.5525001 Z "/&gt;&lt;/symbol&gt;&lt;symbol id="g3A69B5BA14C4FC0AE0508775E710B241" overflow="visible"&gt;&lt;path d="M 0 0m 3.0618 5.90625 c 0 0.15119982 -0.11339998 0.35909986 -0.37800002 0.35909986 c -0.25515008 0 -0.5292001 -0.24569988 -0.5292001 -0.5197501 c 0 -0.16064978 0.12284994 -0.35909986 0.37800002 -0.35909986 c 0.27405 0 0.5292001 0.2645998 0.5292001 0.5197501 Z m 0.24569988 -4.5549 c 0 0.12285006 -0.12284994 0.12285006 -0.15120006 0.12285006 c -0.1322999 0 -0.14174986 -0.05669999 -0.17954993 -0.16065001 c -0.21735 -0.756 -0.63314986 -1.14345 -1.0016999 -1.14345 c -0.18900001 0 -0.23625004 0.12285 -0.23625004 0.33074996 c 0 0.21735 0.06615007 0.3969 0.15120006 0.6048 l 0.3024 0.75600004 l 0.4630499 1.20015 c 0.028350115 0.09449983 0.05669999 0.20789981 0.05669999 0.30239987 c 0 0.44414997 -0.37800002 0.8032501 -0.8977499 0.8032501 c -0.93555 0 -1.37025 -1.2852001 -1.37025 -1.4458499 c 0 -0.12285018 0.13229999 -0.12285018 0.16064999 -0.12285018 c 0.13230002 0 0.14174998 0.047250032 0.17009997 0.15120006 c 0.2457 0.81270003 0.6615 1.1529 1.01115 1.1529 c 0.15119994 0 0.23625004 -0.07559991 0.23625004 -0.33075 c 0 -0.21735 -0.05669999 -0.3591001 -0.29295003 -0.94499993 l -0.59535 -1.52145 c -0.037799954 -0.12284994 -0.08504999 -0.23624998 -0.08504999 -0.39689994 c 0 -0.44415003 0.37800002 -0.80325 0.89775 -0.80325 c 0.94500005 0 1.3607999 1.3040999 1.3607999 1.4458499 Z "/&gt;&lt;/symbol&gt;&lt;/defs&gt;&lt;/svg&gt;&lt;/span&gt;、周期性挤压变形等都是可微参数；&lt;/li&gt;
&lt;li&gt;随机噪声层 Randomized Variation：用柏林噪声和白噪声让纤维的半径和纵向产生变化、噪声种子本身不可微但强度可微。&lt;/li&gt;
&lt;li&gt;飘散纤维层 Flyaway Model：额外手动添加飘散出来的断线等纤维（定义有毛发 Hair 和环路 Loop 两种），模拟现实材质情况。这一层没法可微优化出来。&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;&lt;/p&gt;</description></item></channel></rss>