Sam Bigos

As a huge fan of Digital Foundry and the work they do, this is the highest compliment!

@HarryAlisavakis Looks great, nice one! Glad the article helped.

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@gadirom_ @ziyangwen It's the one you linked in the post you sent me (the browser game, I don't know if the renderer is released). Normals and depth exist in 2D. But I don't know enough about how IS works. I assume it would work similarly.

@Calneon @ziyangwen Not sure how IS works in 2D, also denoisers usually asks for normals and depth which don’t exist.. can you give me a link on his renderer?

Test 618 Morphing #unity3d #generativeart

@gadirom_ @ziyangwen Ah nice. Yeah mine is very slow too. I think you could use some importance sampling techniques that 3D GI solutions use to make it faster. Impressive how fast kishimisu's browser version runs!

@Calneon @ziyangwen Here is how my implementation looked like. Extremely noisy and quite slow on iPhone. I used a lot of Gaussian to fight noise but then the detailed struggled.

@gadirom_ @ziyangwen I don't know how Wenzy does it (or if it's built-in Unity, I don't think so) but I have an implementation here: sambigos.itch.io/2d-global-illu…

@ziyangwen Wow Unity has a real-time 2D GI? I wonder what algo they used, since my Monte Carlo estimator looks ugly compared to this 🙈

This is what I've been working on for the last 3+ years. Feels good to set it free.

Sci-fi shooty shooty I'm prototyping. Uses a global illumination system I wrote based on DDGI, and the character anims are all procedural IK (Fabrik).

@reduzio Hi Juan, are you able to give more info on how the solid/emissive/albedo maps are created? I'm not sure on the step to go from 2D rasterized images of the scene to a 3D texture of voxels. Is Voxelization the technique used here?

@OskSta Make a custom X-dimensional native array type. Here: github.com/samuelbigos/ma…

So.. you absolutely have to flatten all data structures to fit them into Unity's Jobs and Burst, right? My WFC library is really quite nested, so this looking like a real piece of work...

@yaqwsx_cz The very odd thing is that the warping comes in pairs, when one warps, it warps its adjacent neighbor in the opposite direction. I guess that's because when it warps, it then creates turbulence in the resin that warps neighbors? Tried adding rest time but didn't help much :(

@yaqwsx_cz Should be perfectly straight. My best guess right now is it's some external vibrations, possibly from the downstairs neighbor. It's inconsistent, some have worked, and when it warps the height varies. I agree doesn't seem mechanical.

@yaqwsx_cz Hi! Your post on resin printing are amazing and I'm learning so much from them. In a video (youtube.com/watch?v=TIYiXM…) you're printing tall and thin objects. I'm trying something similar but mine get warped at various heights. Did you face similar issues? Any ideas?

@SebAaltonen Yes I'm talking about main thread work too. We make sure they don't hitch (are consistent) and are no more than like 1% of the total available frame time (e.g. if we have 5ms for game logic per frame, each task is no more than 0.1ms). Then, it averages and total variance is low.

@Calneon If these are background tasks which run in worker threads and don't stall the frame, then it's OK. I am talking about stuff that must be executed as part of the frame, and can cause a hitch -> miss vsync.

The most malicious performance hack: You have slow running code. Let's execute it every other frame (or every second in case of online services). The code is still slow, but is less visible in the average fps counter. But you will see horrible stuttering instead.

@SebAaltonen It can be the only way to improve performance if that code is already well optimised, though. If enough systems use it, and you have a reasonably intelligent scheduler, it averages out and saves a lot of time for systems that can handle it (we use 3hz and 1hz groups).

This is especially bad if multiple people add code like that and they amplify each other. The stuttering becomes bigger. It's difficult to profile performance issues like this as they are not visible every frame. You need to carefully time your frame capture.

@beast_pixels Yeah that's basically what the top image is. WFC isn't doing much except placing the correct tiles for the path. But, any other solution without WFC would encounter the same problem, making a path that doesn't make best use of the tiles, or allow weighted placement.

Applying path constraints to my marble run generator is a tough problem. Generating a path first then constraining WFC by it (top) ignores weights and biases inherent in tile setup. Leaving WFC to generate a path (bottom) leads to invalid paths and loops if using forked tiles.

@runevision I agree it can sometimes be a trap. But I think it is helpful here. I need to get from a start to end cell, doing that by randomly placing tiles wouldn't work. If you predefine a path, you're basically back to the initial problem where the path doesn't make good use of the tiles.

@Calneon If it's proving this difficult, I suspect it might be easier to use a non-WFC approach instead. Like continuously placing new valid adjacent tiles next to open ends, and backtrack if it's built itself into a dead end.

@OskSta @ValakhP Yeah I really like how that works in Townscaper. It looks like you're somehow collecting faces from the constructed mesh, constructing a new mesh and enlarging it slightly. Doesn't seem to be based purely on the face normal though since details like chimneys are preserved.

@Calneon @ValakhP The tricky bit is how you highlight upon the already constructed mesh

I didn't like how selection highlight was instantly jumping between cells so I made it smooth