Blender Cycles: Procedural Stars World
Hi everybody. Today I'm going to show to you how to make a stars world for cycles. Blender internal has an option in the world settings to create this, but cycles engine hasn't. So I have created a procedural world including galaxies too.
First of all we need a texture to show stars. I have taken one node setup from this awesome apple material explained here. It is well explained by its author. It is called Big Dots.
Then I need a noise texture to simulate galaxies in astronomy pictures. I have used the following. It is called Noise0Pattern:
The next step is setting the noise texture on the world. I have used two Noise0Pattern groups, one for blue/pink light, and another for yellow light. I have also used alpha to be uses as factor for mixing both textures. This is what I have done:
I have tweaked the pink/blue color ramp node to establish high and low density areas of stars in the world.
After this I can add stars with different sizes and intensities. Some of them go to high density areas and the others go everywhere:
And finally I have joined everything and used two Background nodes with different strengths. Because of the World settings add light to your objects, I use 1.0 for camera background and 0.
This is the complete node setup and the world panel view:
You can download this in blendswap and find a high resolution version of the render with some compositing in deviantart.
I hope you like it.
Bye
First of all we need a texture to show stars. I have taken one node setup from this awesome apple material explained here. It is well explained by its author. It is called Big Dots.
Then I need a noise texture to simulate galaxies in astronomy pictures. I have used the following. It is called Noise0Pattern:
The next step is setting the noise texture on the world. I have used two Noise0Pattern groups, one for blue/pink light, and another for yellow light. I have also used alpha to be uses as factor for mixing both textures. This is what I have done:
I have tweaked the pink/blue color ramp node to establish high and low density areas of stars in the world.
After this I can add stars with different sizes and intensities. Some of them go to high density areas and the others go everywhere:
And finally I have joined everything and used two Background nodes with different strengths. Because of the World settings add light to your objects, I use 1.0 for camera background and 0.
This is the complete node setup and the world panel view:
You can download this in blendswap and find a high resolution version of the render with some compositing in deviantart.
I hope you like it.
Bye
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