August 29, 2022 iRendercs

Create a Slow Motion Liquid Burst with Redshift (Part 2)

In the previous article, we go through 3 first steps to create a slow motion liquid burst with Redshift. Now, we continue with setting up light and render to finish the output.

4. Add light and material to the scene in Redshift

Add a Dome Light to the scene and add the texture. Add a Spotlight and adjust it to point at our geometry from an overhead angle.

Before you create the material, you should set up your post effects so that you can view the render correctly. Therefore, you enable post effects in your render view, turn on the Photographic Exposure effect and adjust Allowed Overexposure to 1.

Next, you create a new Redshift Standard Material, then add it to xpOpenVDB mesher. 

After that, you open the material in the Node Editor, select the Standard Material node:

            • Turn the Base Weight down to 0
            • Change the Reflection Roughness to 0.1 
            • Adjust the Transmission Weight to 0.9
            • Change the Color to the one that is between yellow and orange
            • Bump up the Dispersion to 9

With the above setup, you will have a nice colored glass material which has a thin gold edge with a slight dispersion effect. To make it more detail, you can add another standard material to the network:

            • Change the Base Color to gold color
            • Turn the Base Metalness Parameter to 1 and the Reflection Roughness to 0

Then, you will add a Material Blender node and connect the Transparent Material to the Base Color. The gold material will plug into layer

color 1. 

Next, you add a Curvature node and plug it into the Blend Color. The Curvature node creates a black and white texture where the white areas are curved and the black areas are flat the closer a color is to white the more curved it is:

            • Select the curvature node and increase the Contrast to 3
            • Under Output Range, set the Min down to -0.1 and increase the Max to 2

5. Render on Redshift

When you turn on the Redshift render,  you can see a gold edge on your

transparent material. Now you will hide proxy geometry and turn on the x-particle simulation. After that, you open up the Redshift Render Settings:

            • Select the Advanced tab
            • Under Unified Sampling, bump up the Samples Max to 2048
            • Deselect the Random Noise Pattern checkbox 
            • Turn on the Altus single
            • Pass denoiser under the Denoising tab

Now you’re ready to render!

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iRender – Happy Rendering!

Source: theAstropath

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