The Gnomon Workshop - Large-Scale Water FX in Houdini

Houdini大面積的水特效模擬教程。

探索胡迪尼史詩般的水鏡頭模擬的完整過程，海洋生物沖出海面并潛回海洋。這個綜合研討會由CG主管Miguel Perez Senent 講解，首先定義一個大的海洋表面，然后展示Houdini最新的水模擬工具集模擬與生物的互動。使用最新的 FLIP 求解器，創建基礎流體仿真，并深入了解提示和技巧，使其更加逼真和高效。然后，您將學習如何使用一些巧妙的技術生成流體網格并將其與海洋的其余部分混合，了解如何使用結果根據網格表面屬性和物理特征定義自定義白水排放源。

真實水的模擬帶來了重大挑戰，尤其是在大尺度下。在幾節課的過程中，您將探索一系列實現逼真動畫技術，從模擬平面到使用基于真實觀察的各種方法來模擬不同密度下水的行為來修改數百萬個粒子的動力學。最后，您將在 Solaris USD 上下文中使用 Karma 進行效果渲染，確保水的每個組件都緊密集成在一起。通過拆分各種必要的通道，您可以使用Nuke輕松地將最終合成組合在一起。

在整個研討會中，您將學習保持場景效率，以便能夠使用一臺計算機創建鏡頭。值得注意的是，在最終分辨率下展示的FLIP和白水模擬花了不到1個小時的時間運行。借助 TOP 的強大功能，您將解鎖楔入和并行化模擬和渲染的能力。

盡管這個研討會涵蓋了一些高級主題和技術，但沒有經驗的跟隨將使您獲得最終結果。這個教程包括完全創建特效鏡頭所需的材料，包括帶有紋理、光線和相機的動畫生物。

為期： 412 分鐘

格式： HD 1920x1080

Discover the complete process that goes into executing an epic water simulation shot featuring a sea creature breaching out of the ocean and diving back in. This comprehensive workshop, taught by CG Supervisor Miguel Perez Senent, begins by defining a large ocean surface and then showcasing Houdini’s latest water toolset to simulate interaction with the creature. Using the latest FLIP Solver, you will create the base fluid simulation and dive into tips and tricks to make it more realistic and efficient. You’ll then learn how to generate and blend the mesh of the fluid with the rest of the ocean using some clever techniques and discover how to use the result to define a custom whitewater emission source based on the mesh surface properties and physical characteristics.

The simulation of realistic whitewater poses significant challenges, especially at large scales. Over the course of several lessons, you’ll explore a range of techniques to achieve realistic motion, from simulating an airfield to modifying the dynamics of millions of particles using various methods based on real-life observations to mimic the behavior of water at different densities. Finally, you will look-dev and render the shot using Karma within the Solaris USD context, making sure each component of the water is tightly integrated. By splitting the various necessary passes, you can easily put together a final comp using Nuke.

Throughout the workshop, you will learn to keep your scene efficient in order to be able to create the shot with a single computer. Notably, the showcased FLIP and whitewater simulations at the final resolution took under 1 hour to run. Through the power of TOPs, you’ll unlock the ability to wedge and parallelize simulations and renders.

Even though this workshop covers some advanced topics and techniques, following along without prior experience will get you to the end result. Included with this workshop are the materials needed to fully create the FX shot, including the animated creature with textures, light, and camera.

Duration: 412 Minutes

Format: HD 1920x1080