Houdini点属性烘焙到贴图Houdini: Baking Point Attributes To Textures

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EDIT: For more point to texture attribute trickery have a look at the scene files.

In our tutorial on dissolving geometry we hinted at baking point distances into a texture rather than using highly subdivided geometry to store attributes from a point cloud. While this is possible using classic baking approaches in Mantra, we wanted to build something more lightweight, while providing on render time evaluation in third party engines such as Redshift or Octane.

In this tutorial we’re gonna build a fast texture baking setup using volumes and VEX. It evaluates on render time without the need for separate baking and it works with Octane and Redshift too!

00:00 – Intro
00:33 – Importing & Preparing Geometry
01:50 – Fixing UVs
03:03 – Scattering Points
03:30 – Creating A Texture
04:27 – VEX: Writing Point Distances To Volume
07:56 – Converting Volume To Texture
08:57 – Mapping Texture To Geometry
10:00 – Building The Artwork: Remapping Point Distances
11:16 – Setting Up Octane
11:47 – Setting Up Main Material
12:58 – Fixing Octane’s N-Gon Issue
13:45 – Ideas For Further Improvements
14:20 – Setting Up Particles
15:40 – Changing Texture’s Resolution
16:33 – Infamous Last Words

Download Project Files: https://www.entagma.com/downloads/Texture_From_Point_Attrib_01.zip
谷歌翻译：
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编辑：有关纹理属性欺骗的更多信息，请查看场景文件。

在我们的有关溶解几何的教程中，我们暗示了将烘焙点的距离映射到纹理中，而不是使用高度细分的几何来存储点云中的属性。尽管使用Mantra中的经典烘焙方法可以做到这一点，但我们希望构建更轻巧的东西，同时在第三方引擎（如Redshift或Octane）中提供渲染时间评估。

在本教程中，我们将使用体积和VEX建立快速的纹理烘焙设置。它可以评估渲染时间，而无需单独烘烤，它也可以与Octane和Redshift一起使用！

00:00-简介
00:33-导入和准备几何
01:50-修复UV
03:03-散射点
03:30-创建纹理
04:27-VEX：写入点到体积的距离
07:56-将体积转换为纹理
08:57-将纹理映射到几何
10:00-构建作品：重新映射点距离
11:16-设置辛烷值
11:47-设置主要材料
12:58-修正Octane的N-Gon问题
13:45-进一步改进的想法
14:20-设置粒子
15:40-更改纹理的分辨率
16:33-臭名昭著的遗言

下载项目文件：https://www.entagma.com/downloads/Texture_From_Point_Attrib_01.zip