Noise texture explained (blender 2.9)

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The blender node "Noise Texture", might be a bit confusing to some. In fact the node is a kind of "fractal noise". In this video I give a basic explanation of the noise texture, followed by a detailed and in-depth explanation which covers every input/output socket. At the end of this video I show some other ways you can use fractal noise.

Link to the relevant source files:
Noise Texture node (GLSL)
Fractal Noise (GLSL)

Recorded with: OBS

Blender

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This kind of videos are very welcome. Awesome content, thanks.

mikezurawski

A great explanation. I'm slowly working my way through your excellent tutorials. Just want to say a big thank you for sharing your knowledge. THANK YOU! Dg

vstreet

Wow, awesome thankyou for this video. I want to learn more about normals, shaders and python. This is great place

alexmattyou

Exactly what's needed. Some under-the-hood descriptions of how stuff works. Suggestion? Add a link to the source-code you're referring to.? Content suggestion? Can you describe the order of events behind Cycles displacement? What the renderer picks up, and when, in the pipeline? Or the same, for the Vector > Bump node? How and when normals are derived from heights? I've made my own node group to convert from height to normal via Sobel convolution.. I was hoping Bump worked the same way, but I can't use it to shade, say, one side of a displacement derived from the same height-map, in the way I can use my own (ridicuously complicated) group.

rbettsx

The node groups

What's inside? How do you make the perlon noise with nodes?

swapnayak

Hi may I know why every time I add the noise texture for shading then my mac become so lagging? By the way my mac format is 16GB ram and intel Iris Pro Graphoc 6200 1436MB. Anyone could help? Big thanks !

bp

Would like to know more about those G and B calculations for Fractal noise. It literally looks like its calling the same script with an offset. Strange, doesnt that do the same thing as taking the R channel and moving it or does the offset change the seed?

matissetec

Thanks but would have been nice if you had shown how you are viewing the noise texture..

Guest_

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