Blender & Yafray HDRI Blender 3d tutorial.pdf

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Blender 3d Materials Blender & Yafray HDRI Tutorial
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BLENDER & YAFRAY HDRI TUTORIAL
Tutorial Requirements
You will need to have some basic experience with Blender and, of course, the following pieces of software:
Blender 2.34
YafRay
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You will also need a .hdr image. A few examples can be found here .
Introduction
In this tutorial we are going to create an image that uses HDRI technology - the aim of which is to teach you how to use HDRI
sources in Blender. The acronym HDRI is short for 'High Dynamic Range Image', and is explained in more detail here - the
practical examples themselves are well worth your browsing time.
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Building The Scene
We will start this tutorial by building a simple scene consisting of four objects - a UV sphere, a lamp, a camera, and a floor plane.
Place the objects in roughly the same positions as the diagram below.
Fiddle with the camera a little until you can render a sphere resembling the one below. Our scene is now ready. Define the shader
of our sphere and adjust the world settings so that the .hdr image is mapped onto the surface.
Creating the UV Sphere Shader
Select the UV sphere. Go to the editing tab and click on the set smooth button - This will automatically smooth out our UV
sphere when it is rendered. Now click on the shading tab and press the add new material button. We want to eliminate the
material's specularity, so adjust the spec slider to 0. Click on the mirror transparency button and then the ray mirror button.
Set the corresponding slider to a value around 0.50.
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Our material preview should show a texture reflecting a chequered floor plane. We have now finished creating a material for our
sphere. If we render our image, we can see it is reflecting a blue colour, which is our current sky colour.
Loading a .hdr image Into World Settings
Deselect all objects and click on the shading tab, and then the world settings tab. From the bottom right of the screen find the
add new texture button and click it. We can now load our .hdr file. To do this, click on the texture tab, and set the property in
the texture type box to Image. Navigate your way through your pcÓs hard drive, until you find your hdr file and then load it up.
Leave all the other settings alone.
Soft shadows
To give our scene more life-like lighting we are going to enable soft shadows. Start by selecting your lamp, then click on the
shading tab. Now click on the lamp button and then on the buffer shadows button. Play with the settings to your heart's
content until they suit your own individual tastes. You can also adjust the strength of the light in the shader tab.
Final touches
If you are unsatisfied with the results that you receive from your renders, just start moving the light source into a position that
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BioRUST.com :: Tutorials >> Blender & Yafray HDRI
http://biorust.com/index.php?page=tutorial_detail&tutid=73
you find more aesthetically pleasing. I also find that if I decrease the amount of diffusion on my UV sphere, the specularity
reduces accordingly as well.
Rendering
Go to the render tab. Make sure that you have YafRay enabled as the render engine, and that the envmap setting is enabled.
Then just hit the render button. The result should resemble the image below.
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This is, of course, only a single example of the potential uses of HDRI mapping. You could use this feature on any model that you
have created, and the technique is universally exciting, capable of making all your models substantially more life-like. So play
around a bit and watch your renders come to life!
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- Tutorial written by Milkdrop
Automatic Translations:
LAST 5 USER COMMENTS
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User: jimmy_pazaron ( #48343 )
Date: Mon Feb 25, 2008. 03:01:20
Post #5 of 5
This is awesome.. I was able to do it!!!!!!!
JiM
Reply to this post
User: djwoland ( #42566 )
Date: Thu Jun 07, 2007. 13:16:21
Post #4 of 5
Quote from Korgone;29613:
It not working for me eather it happing on the plane not the sphere :/
with 2.43 everything good
Yafray and internal renderer do results different
Reply to this post
User: Korgone ( #29613 )
Date: Thu Jul 06, 2006. 18:29:42
Post #3 of 5
Quote from buzz:
Hi,
The tutorial is good - but I couldn't get it to work. I'm using 2.41 and followed your instructions (several times to make
sure I was doing it ok) but I couldn't get the hdr image to reflect in the sphere.
Any ideas?
It not working for me eather it happing on the plane not the sphere :/
Reply to this post
User: buzz ( #28312 )
Date: Thu Jun 01, 2006. 20:03:20
Post #2 of 5
Hi,
The tutorial is good - but I couldn't get it to work. I'm using 2.41 and followed your instructions (several times to make sure I
was doing it ok) but I couldn't get the hdr image to reflect in the sphere.
Any ideas?
Reply to this post
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3/7/2008 1:26 PM
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BioRUST.com :: Tutorials >> Blender & Yafray HDRI
http://biorust.com/index.php?page=tutorial_detail&tutid=73
User: zero1535 ( #28133 )
Date: Mon May 29, 2006. 15:03:04
Post #1 of 5
This tutorial is great dude the outcome is awesome. I don't use blender3d but I will recommend it to others who do.
Reply to this post
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