Houdini与Rs场景灯光渲染

Sharing here my workflow for Environment lighting and atmospheric effects within sidefx Houdini.

Using “Dreamland” for demonstration, a scene I developed last year which was based on a ride of an abandoned park in Japan.

Using Redshift for rendering but can definitely use any engine to follow this principles. (Mantra, Renderman etc…)

This tutorial is about 30 min long in a nutshell we :
– First find and try some sweet HDR images that match our reference photos. I found those HDR files either on CG sky of HDRI Haven so definitely checkout those website :
___ https://www.cgskies.com/
___ https://hdrihaven.com/

We’ll just make sure all of those HDR are oriented in the same direction to setup a consistent light rig for each one of them. And then we’ll play with these rigs to find the most interesting lighting condition for each HDR.

– The Second step will be creating some atmospheric for our scene. I know Redshift can create its own fog but I’m not gonna use it, other engines like Mantra, Renderman don’t have that so I think it’s always a good thing to know how to build this from scratch. I’ll show you a method with basic VEX you can use to create an Exponential Height Fog with Houdini’s VDB. Then we’ll need to tweak its shader to fit our scenes.

– And finally we can start tweaking lighting with the fog volume… and additionaly experiment with postFX to preview some color corrections, bloom, flares that kind of thing. By the end we can pretty much get our final image without leaving Houdini, so perfect for trying ideas and developing concepts.

I hope this get you excited about environment creation !

Also checkout my past videos especially “Ultimate Terrain Workflow” for more tips and tricks about environments in Houdini.

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Social Medias :

gumroad.com/adrienlambert
adrienlambert.artstation.com
facebook.com/adrienlambertvfx/
vimeo.com/adrienlambert
instagram.com/adrienlambertvfx/
patreon.com/adrienlambertvfx

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My Patreon is still unlaunched at the moment, will resume all the content some time next year with new tutorials. Unfortunately I will be stopping Mentorship / VIP Patreon, lacking time with my current position.
谷歌翻译：
在这里分享我在sidefx Houdini中进行环境照明和大气效果的工作流程。

去年，我使用“ Dreamland”进行演示，该场景基于日本一个废弃公园的游乐设施。

使用Redshift进行渲染，但绝对可以使用任何引擎来遵循此原则。 （咒语，渲染器等…）

简而言之，本教程大约需要30分钟：

-首先找到并尝试一些与我们的参考照片匹配的甜美HDR图像。我在HDRI Haven的CG天空上找到了这些HDR文件，因此绝对可以查看这些网站：

___ https://www.cgskies.com/
___ https://hdrihaven.com/

我们只需要确保所有这些HDR的方向相同，即可为每个HDR设置一致的光源。然后，我们将使用这些装备来为每个HDR找到最有趣的照明条件。

-第二步是为我们的场景营造气氛。我知道Redshift可以创建自己的雾，但是我不会使用它，其他引擎（如Mantra，Renderman）没有它，所以我认为了解如何从头开始构建它始终是一件好事。我将向您展示一种具有基本VEX的方法，您可以使用该方法与Houdini的VDB创建指数高度雾。然后，我们需要调整其着色器以适合我们的场景。

-最后，我们可以开始调整雾量的灯光…，并使用postFX进行额外的实验，以预览一些颜色校正，光晕和眩光。到最后，我们几乎可以在不离开Houdini的情况下获得最终形象，因此非常适合尝试想法和发展概念。

希望这会使您对环境创建感到兴奋！

另外，请查看我过去的视频，尤其是“终极地形工作流”，以获取有关Houdini环境的更多提示和技巧。

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社交媒体：

gumroad.com/adrienlambert
adrienlambert.artstation.com
facebook.com/adrienlambertvfx/
vimeo.com/adrienlambert
instagram.com/adrienlambertvfx/
patreon.com/adrienlambertvfx

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我的Patreon目前仍未启动，将在明年的某个时间通过新教程恢复所有内容。不幸的是，由于目前的工作时间不足，我将停止辅导/ VIP Patreon。