Challenge 08: Welding.Â Too often we see metals in CG which aren't welded at all. It's a fairly complex problem shading wise, since often the UV cuts placed where the welding should be at. Whilst it would make sense to add geometry for this, this is not allowed in this shading challenge. Let's solve this issue once and for all, and figure out how to do this properly and procedurally. On our end, we've moved hosting provider which should hopefully provide a smoother experience [we used to run out of ram too often during peak times]. Apologies for the December downtime. There will once again be aÂ voting panel of various industry experts in lookdevelopmentÂ - working atÂ Pixar, ILM and Double Negative. Feel free to tag shaders.xyz in your social media posts, we now have a Facebook, Twitter and Instagram.The deadline of the challenge is on the 1st of March, 00:00 GMT.Â Good luck everyone!
The initial scene setup is very straightforward and only takes 5 minutes. It is important that we standardize scene conditions between contributors, so please make sure that you're not setting up the scene differently.
- Download and extract the .zip package.
- Open or load in the alembic, containing the scene geometry and camera.
- Assign a lambertian material to the floor geometry, assign the checker texture map [tex/checker_floor.tif] to the color slot.
- Repeat step 3 for the macbeth chart [tex/macbeth_chart.tif].
- Download this HDR. Big thanks goes out to Greg at HDRIHAVEN for open-sourcing his work. Big up! His journey into crowdfunded work is pretty interesting, read it if you find a spare moment!
- No need to rotate the HDRI this time!
The default lighting setup should look like the following.
Please make sure to post renders using this setup. It is allowed to post extra renders using your own light setup. Since the shared light setup is at the core of the challenge, this will be heavily moderated. You've been warned!
What is expected of you?
This month, only oneÂ render needs to be submitted. The focus of these challenges is on sharing shading knowledge. ExplainÂ the shading setup in as much detail as you can be bothered to do. Think of shaders.xyz as a sort of open source project. Please, also share your scene file if possible. This is not a requirement, but would be very nice. About creating extra geometry - just try to think if it would work in a shading pipeline. If you think it would be practical, go for it. I don't want to limit anyone's amazingly capable brains.
Feel free to post WIPs in this thread.
For now, please use "auto" for the width and height attributes when uploading images. This is needed to display them correctly.
To tag others in a post, use the "@" symbol.
To avoid image compression, upload .png instead of .jpg! This is something we're working on to avoid ..yes.. still..
That's all! The winner gets picked by the admin team on theÂ 1st of March, 2018Â and willÂ receive an exclusiveÂ SHADERS.XYZÂ t-shirt (hype!).Â Don't forget to motivate others by voting for your favourite submission! Good luck everyone!