This tutorial shows a workflow for rendering 3D scenes in separate passes and compositing these renderings for finer control. The 3D rendering will be done in Maya, using Mental Ray and its “mia_x_Passes” materials, that allow the output of all information used by the shader at render-time. The compositing of these renderings will be done in Nuke using OpenEXRs in a linear workflow.
- Separating scene elements in contribution maps
- Separating passes for each contribution map
- Saving multi-layer OpenExr files
- Compositing shaders in Nuke
- Writing custom color buffers
Chapter 1 – Introductionhttp://cgchannelvideos.s3.amazonaws.com/multipassrenderingtutorial/chapter1_introduction.mp4
Chapter 2 – Contribution Mapshttp://cgchannelvideos.s3.amazonaws.com/multipassrenderingtutorial/chapter2_contributionMaps.mp4
Chapter 3 – Passeshttp://cgchannelvideos.s3.amazonaws.com/multipassrenderingtutorial/chapter3_passes.mp4
Chapter 4 – Multi-layer OpenEXR fileshttp://cgchannelvideos.s3.amazonaws.com/multipassrenderingtutorial/chapter4_openEXRs.mp4
Chapter 5 – Compositing shaders in Nukehttp://cgchannelvideos.s3.amazonaws.com/multipassrenderingtutorial/chapter5_nukecompositing.mp4
Chapter 6 – Writing custom color buffershttp://cgchannelvideos.s3.amazonaws.com/multipassrenderingtutorial/chapter6_customColors.mp4
Gustavo Eggert Boehs has a degree in Graphic Design by the Federal University of Santa Catarina,Brazil. He has also atended a one year 3d animation course at Melies, during this time he directed and produced from start to finish his animated short “Chicken’o’Matic”. He now works at a post house in Brazil called Ilegal FX as a Generalist 3d artist.