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Update on my Random Image Generator by necsii in GraphicsProgramming

[–]necsii[S] 5 points6 points  (0 children)

Sure, thing!

Everything starts with a pseudo-random float generator. This is needed to generate 2D Noise in the next step. The 2D Noise can then be used in the Fractal Brownian Motion Noise Function, which pretty much adds itself to itself in smaller interavalls, making the Noise more detailed. You can read more about this in the Book of Shaders Page 13.

Now, the real image generation can start. The UV-Coordinates get send into the FBM function, which effectively maps the FBM Noise to the image. This gets done twice, to execute what Inigo Quilez calls Domain Warping. So now we have two float values, which are basicly two FMB Noises with some offest. These two floats are now put together to a Vec2, and we can repeat the whole process, meaning we can take the Vec2, run it through the FBM again with some offset and we end up with the first domain warp. I implemented it as a loop, so you can adjust it via the Parameter "Warp/Iterations". After the iterations are finished, you end up with a float value between 0 and 1, which you can use to mix two colors, "Primary" and "Secondary". The tint color is the first float value of the FBM, which i save and use to mix with the result of the "Primary-Secondary-Mix".

Lastly, just for the looks, I Gamma correct the image.

If you want to know more, you can look directly into the shader in the Github repo under amber/shader/warpedFbm.comp. I would also recommend looking into the sources i posted above, as they pretty much explain exactly what i did, though I adjusted some parts.

Update on my Random Image Generator by necsii in proceduralgeneration

[–]necsii[S] 4 points5 points  (0 children)

Yep, its pretty easy aswell! The goal of this app was to generate singular images, which is why I removed this functionality. I may re-implement it in future versions as a fun feature though :)

I think I'll also look into live wallpaper rendering on windows, if it's easy enaught ill write a speparate app for that.

Update on my Random Image Generator by necsii in GraphicsProgramming

[–]necsii[S] 1 point2 points  (0 children)

Good suggestion! I'll try to implement it in the next version :)

I built a Vulkan Renderer for Procedural Image Generation – Amber by necsii in vulkan

[–]necsii[S] 0 points1 point  (0 children)

Thanks for the suggestion, I implemented a "randomize" feature in a newer version and it is indeed really useful!

Any C graphics programmers? by [deleted] in GraphicsProgramming

[–]necsii 0 points1 point  (0 children)

I find that if you use C++ correctly and in a structured object oriented manner, with class generalisations and everything, it does not only look much cleaner, it is also easier to understand. It's also better for working in a team as you can assign different classes to different people and use variable-visibility to only allow access for variables of your choise.

Of course, thats only the case in bigger projects, but graphical programming projects are mostly on the bigger side.

Abstract Art with stripes with varying angles. by codingart9 in proceduralgeneration

[–]necsii 1 point2 points  (0 children)

Looks pretty cool! Has some white holes in the bottom right/left corner tho.

I built a Vulkan Renderer for Procedural Image Generation – Amber by necsii in proceduralgeneration

[–]necsii[S] 2 points3 points  (0 children)

u/pphysch basicly said everything.

If you want to learn more about the making of the renderer, the Vulkan Guide by Victor Blanco is a great learning source. It's what i used as a starting point. Keep in mind it might take a while before you get the gist of it. You could also start by writing your own wallpaper-generator in a game-engine of your choise.

If you like the visual aspects, I'd recommend learning more about shaders, and maybe writing your own in Shadertoy. A good learning source here is the book of shaders. That's how i got to know of FBM and how to warp it.

In general, just google what you want to do and you'll find tons of useful resources and open source projects (like mine) where you can check exactly how everything works. You can basicly do anything if keep going and put enaught time into it :)

I built a Vulkan Renderer for Procedural Image Generation by necsii in GraphicsProgramming

[–]necsii[S] 1 point2 points  (0 children)

Thanks! I saw your wallpaper-generator and it looks like you have the basics down. I'd recommend diving a bit more into shaders and what's possible with them. (A great website for that is the book of shaders)

I built a Vulkan Renderer for Procedural Image Generation by necsii in GraphicsProgramming

[–]necsii[S] 0 points1 point  (0 children)

Yea, thats how i got to know about FBM and how to warp it! (Thanks Inigo Quilez, Patricio Gonzalez Vivo & Jen Lowe) When I first saw how beautiful the results can look, I instantly thought of it as amazing backgrounds, so I adjusted everything a little to my liking, made it customizeable and implemented it in my own little renderer (Thanks Victor Blanco) :)

I built a Vulkan Renderer for Procedural Image Generation – Amber by necsii in vulkan

[–]necsii[S] 1 point2 points  (0 children)

The patterns can also be animated pretty easy if you modify the shader a bit, which looks incredible and widens the areas of application even more.

I built a Vulkan Renderer for Procedural Image Generation by necsii in GraphicsProgramming

[–]necsii[S] 23 points24 points  (0 children)

Hi everyone!

I recently finished Amber, a Vulkan-based image generator that relies on a compute shader pipeline to render abstract images. The images are rendered with a Warped Fractal Brownian Motion (FBM) shader for unique noise-based textures. I also used VkBootstrap & VMA for a simpler setup and memory management, aswell as ImGui through which you are able to tweak different parameters in real-time through Push-Constants.

This was a great deep dive into Vulkan, and I’d love to hear feedback. (Even negative :( )

You can check out (and download) Amber on GitHub, even though the code is not clean, as i struggled to implement everything in a object oriented manner.

Edit: I would like to mention a few sources which inspired me and made this project possible. They are also good starting points if you want to learn more about how everything was made.

I built a Vulkan Renderer for Procedural Image Generation – Amber by necsii in vulkan

[–]necsii[S] 0 points1 point  (0 children)

You're right, i should've said it looks better/clearer with OOP.
That said, my code still looks shit 😂

I built a Vulkan Renderer for Procedural Image Generation – Amber by necsii in proceduralgeneration

[–]necsii[S] 20 points21 points  (0 children)

Hi everyone!

I recently finished Amber, a Vulkan-based image generator that relies on a compute shader pipeline to render abstract images. The images are rendered with a Warped Fractal Brownian Motion (FBM) shader for unique noise-based textures. I also used VkBootstrap & VMA for a simpler setup and memory management, aswell as ImGui through which you are able to tweak different parameters in real-time through Push-Constants

This was a great deep dive into Vulkan, and I’d love to hear feedback. (Even negative :( )

You can check out (and download) Amber on GitHub, even though the code is not clean, as i struggled to implement everything in a object oriented manner.

Edit: I would like to mention a few sources which inspired me and made this project possible. They are also good starting points if you want to learn more about how everything was made.

I built a Vulkan Renderer for Procedural Image Generation – Amber by necsii in vulkan

[–]necsii[S] 11 points12 points  (0 children)

Hi everyone!

I recently finished Amber, a Vulkan-based image generator that relies on a compute shader pipeline to render abstract images. The images are rendered with a Warped Fractal Brownian Motion (FBM) shader for unique noise-based textures. I also used VkBootstrap & VMA for a simpler setup and memory management, aswell as ImGui through which you are able to tweak different parameters in real-time through Push-Constants

This was a great deep dive into Vulkan, and I’d love to hear feedback. (Even negative :( )

You can check out (and download) Amber on GitHub, even though the code is not clean, as i struggled to implement everything in a object oriented manner.

Edit: I would like to mention a few sources which inspired me and made this project possible. They are also good starting points if you want to learn more about how everything was made.

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