Nate написал

Animating pixel art is really no different from animating larger images, except that the pixels are bigger, though there are different pixel art styles.

How do you want to use Spine's interpolation? You may want to keep each frame on pixels. Some games render each pixel as 4 or more pixels, giving a retro look. With that Spine's interpolated movement can happen at the pixel level, so the 4x4 pixels can move smoothly between 4x4 pixels. You could also round the image locations so you don't get that interpolation.

Have you seen this thread?
Using Spine with Pixelart in Dan The Man

I've seen that thread and there's some ideas. Do you have any other examples of some things you mention?

I would be using interpolations to create the animations. Otherwise, it defeats the purpose of using Spine here. Also, un like Dan the Man, I would need to modify meshes to create animations.

What I'm trying to say is that it would be nice if I could create all the doll parts and then rotate, transform and edit their meshes in an animation to create a three quarter animation walking cycle, like the one below. I think that's possible with a high resolution image but I don't see how it could be done with pixel art.

Thanks for the suggestions. I was very skeptical this was going to work but then I checked Pixel Grid. I remade my original sprite and took out the lines and reduced the colors. I looked at sprites from Xenogears as an example. Here's a quick result. It still needs work but it's my first animation in Spine.

Edit. Adding a version that uses the original style with lines and more colors. Which one do you prefer?

The pixel grid is a setting in the Spine viewscreen. How do I achieve the pixel grid look in the engine in the game?

Let me back up and start from the beginning.

So here is my sprite animated in Spine

Now after some tests, I found that the best look for this animation is what it looks like as an animated gif, 100% size and at 6fps.

Here is currently the Spine animation playing in my 3D game engine where it looks, as expected, the same as the animation in the Spine software.

The idea is with pixel art, you don't want it to be smooth like it is in the non-pixel view of the Spine animation. But chunkier and with fewer frames like it is when exported as a gif.

So I the goal here is to have the animation in the game look like it does in the exported gif. The fact that my game is in 3D adds another layer of complexity.

Update: Step 1 Complete

So I've successfully imported and run the spine animation in a 2D environment such that the animation in the game engine matches perfectly the animated gif I exported from spine. So this is exactly how I want the spine character to look. But I want them to look like this in a 3D environment. Next step is to project the drawing onto a rendertarget.

Update: Finished

It's working. I draw the spine animation in the bottom center of a 398x224 render target. Then I project that render target onto a plane. The plane rotates to always face the camera too of course. Also I have the render target created and updated every 6 frames to give it a more crunchy pixelly movement. In the video you'll notice how there is no "subpixel" movement in the animations. With each frame of animation the characters pixels translate at distances that match the pixel size of the character.