Today we were learning how rendering worked in Houdini. I have experience in rendering in Maya now to it was definitely easier to understand in Houdini.
- Linearise everything when rendering
- HDRI images – photos used in sphere lighting (environment), linear image
- Displacement render on changes objects when rendered
- Output- EXR image. .exr
- sRGB is is a tirangle and the gamma curve.
- ACEcg is the primary colouring area to use.
- Link – an idiots guide to ACEcg
- Compositing artist
In this task we will be asked to use on of the test objects in Houdini and render it.
- Mantra is a render engine which is also Houdini’s render default.
- Arnold – Maya Autodesk
- Renderman – Pixar
- Redshift – Animation Series
- Cycles – Blender
- Mantra – this you can do a lot but takes a long time to render.
- Karma Soiaris – New render engine, part of Houdini.
- HDRI haven – environment light pictures.
- Hlight node
- Grid – Area light, defused reflection and shadows.
- Sphere – soft shadow
- Distant sun – both sunlight
- Temperature (T) – colour of light
- Align with HDRI environment picture.
- Mix both lighting because normally there is not enough light from the HDRI image.
- Shop and Material work space are similar.
- Shop work space will be prioritised.
- Principleshader node
- Arnold render system is free to download.
- Make sure to restart the programme to install the extensions
- Material work space – Arnold material, standard surface.
- Shader – Arnold material builder e.g. metal
- Specular – reflection
- Texture (.tx) – Proper proxy to be read by Arnold
- Don’t convert textures so Arnold can pick it up.
- IOR – 1.55 is glass, 1.33 is water usually
- Metalness – metal
- Render for a few stills.
When we had the class with Medhi to discuss how we got on with the weekly tutorial. I was having a few issues with rendering. As you can see, the render is black. There is still the time of the render showing up so Medhi said he would look into my file and see what was wrong. Turns out it was that the file name had brackets in it. Also I think there is a memory issue on my laptop so wont allow me to do anymore work.
Once I changed the name of the Houdini file from () to ____ then it seemed to work fine. As such…