Murray Stevenson, Image Engine’s resident Gaffer expert, has been curating an internal “Gaffer by GIF” page, highlighting lesser-known Gaffer features in 60 seconds or less. We’ve liberated as many as we can for this blog post, so check them out and give yourself a pat on the back if you knew them all already.Continue reading “Giffer”
Eric Mehl of Hypothetical has been busy using Gaffer’s procedural scene generation and rendering to recreate Welikia, the ecosystem of New York City before settlement by Europeans. There’s an overview of the work on Hypothetical’s website, and a discussion of the Gaffer workflow on their blog. Windows users might know Eric from his Herculean efforts to port Gaffer to Windows, and his integration of Deadline with Gaffer. Thanks for sharing, Eric!
Gaffer 0.58 contains a caching optimisation that can significantly improve interactive performance in many cases. But this optimisation can also reveal subtle bugs in Nodes that may have gone unnoticed until now. In this post we’ll explore why that is the case, and outline some useful strategies for catching and eradicating such bugs from your custom nodes.Continue reading “Gaffer 0.58.0 : We’re going on a bug hunt”
Sets are a powerful and commonly used tool in production pipelines, but they are not without their dangers. In this post we look at the details of how they work, and share some tips for avoiding their pitfalls.Continue reading “Let’s talk about sets”
Execute the following via the PythonEditor :
import GafferScene n = GafferScene.ShaderAssignment() n["in"]["childNames"].setValue( IECore.InternedStringVectorData( [ "turtles", "all", "the", "way", "down" ] ) ) root.addChild( n )
Then look at the innocent looking ShaderAssignment node in the HierarchyView, and marvel at its recursive uselessness.
How does this work? Answers on the back of a postcard please…
Let’s face it, there’s only so much you can learn about Gaffer from a ball of cows. Wouldn’t it be great if there were some more comprehensive examples that resembled how you might work in a studio environment? Something with real assets and light rigs, that showed how to build a multi-shot workflow using a single template script? Well, now there is!Continue reading “New Gaffer Examples”
Gaffer allows scene locations to be organised into sets, and then uses a simple expression language to combine sets for use in light linking, shader assignments and the like. In this short post we’ll discuss a historical limitation of set expressions and present some useful improvements made in Gaffer 0.56.0.0.Continue reading “0.56.0: New set expression operators”
A common pattern that arises in production is the “shot-specific branch switcher”, typically using a Switch or NameSwitch node to choose the right branch for the current shot. In the fictitious example below, this pattern is employed to select the right render settings per shot, with an ArnoldOptions and StandardOptions node on each branch.Continue reading “What’s cooking? : Spreadsheet node”