Filip Rachůnek
@rachunek.com
📖 Get my Godot 4 book: https://bit.ly/godot4book
😎 Follow my YouTube channel: https://www.youtube.com/@FencerDevLog
I have a passion for crafting games, designing 3D assets, composing music, and sharing insightful tutorials on these subjects.
😎 Follow my YouTube channel: https://www.youtube.com/@FencerDevLog
I have a passion for crafting games, designing 3D assets, composing music, and sharing insightful tutorials on these subjects.
Pinned
Filip Rachůnek
@rachunek.com
· May 14
Godot Shader Pack
Would you like to add great-looking visual effects to your game made in the Godot Engine? Then you're in the right place! This pack contains 80 shaders from my own collection, ready to use immediately...
filiprachunek.gumroad.com
Would you like to add great-looking visual effects to your game made in the Godot Engine? Then you're in the right place! This pack contains 80 shaders from my own collection, ready to use immediately in any free or commercial product.
filiprachunek.gumroad.com/l/shaderpack
filiprachunek.gumroad.com/l/shaderpack
Hi everyone! We have another effect on the agenda whose code fits on a single line. This time it will be a simple edge detection, which we can also use as an original way to fade out a scene, for example, after finishing a level in our game.
www.youtube.com/watch?v=dp6M...
www.youtube.com/watch?v=dp6M...
Godot 4: One line edge shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
February 9, 2026 at 6:07 AM
Hi everyone! We have another effect on the agenda whose code fits on a single line. This time it will be a simple edge detection, which we can also use as an original way to fade out a scene, for example, after finishing a level in our game.
www.youtube.com/watch?v=dp6M...
www.youtube.com/watch?v=dp6M...
Hi everyone! We’ve already covered several shaders that simulate fog, but they were mostly side effects of technologies that aren’t primarily designed for fog. This time, we’ll create a true fog shader and ook at what options Godot 4 offers for this type of effect.
www.youtube.com/watch?v=U9Uu...
www.youtube.com/watch?v=U9Uu...
Godot 4: Volumetric fog shader, part 1 (tutorial)
YouTube video by FencerDevLog
www.youtube.com
February 2, 2026 at 6:04 AM
Hi everyone! We’ve already covered several shaders that simulate fog, but they were mostly side effects of technologies that aren’t primarily designed for fog. This time, we’ll create a true fog shader and ook at what options Godot 4 offers for this type of effect.
www.youtube.com/watch?v=U9Uu...
www.youtube.com/watch?v=U9Uu...
Hello, everyone! This is a continuation of the previous tutorial, in which we created a simple dithering effect. And as I promised, this time we’ll finish the topic by programming a shader for classic dithering with a regular structure.
www.youtube.com/watch?v=Mcv0...
www.youtube.com/watch?v=Mcv0...
Godot 4: Classic dithering shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
January 26, 2026 at 6:02 AM
Hello, everyone! This is a continuation of the previous tutorial, in which we created a simple dithering effect. And as I promised, this time we’ll finish the topic by programming a shader for classic dithering with a regular structure.
www.youtube.com/watch?v=Mcv0...
www.youtube.com/watch?v=Mcv0...
Hi everyone! Let’s continue programming shaders whose code fits on a single line. This time, we’ll create an effect called dithering, which in this case means rendering an image using a heavily limited color palette.
www.youtube.com/watch?v=1qS0...
www.youtube.com/watch?v=1qS0...
Godot 4: Simple dithering shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
January 19, 2026 at 6:08 AM
Hi everyone! Let’s continue programming shaders whose code fits on a single line. This time, we’ll create an effect called dithering, which in this case means rendering an image using a heavily limited color palette.
www.youtube.com/watch?v=1qS0...
www.youtube.com/watch?v=1qS0...
Hello, everyone! The effect I’ll be creating in this video falls into the category of image distortion—that is, a simulation of an imperfect display or external interference. So, let’s take a look at how this algorithm works.
www.youtube.com/watch?v=q94s...
www.youtube.com/watch?v=q94s...
Godot 4: Frequency distortion shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
January 12, 2026 at 6:13 AM
Hello, everyone! The effect I’ll be creating in this video falls into the category of image distortion—that is, a simulation of an imperfect display or external interference. So, let’s take a look at how this algorithm works.
www.youtube.com/watch?v=q94s...
www.youtube.com/watch?v=q94s...
Hi everyone! This is the first video I’ve published in 2026, and since I wouldn’t like to start the new year with something extremely complicated, this tutorial will be easy and quick. We’ll show how we can simulate a view through something like small glass blocks.
www.youtube.com/watch?v=0f0K...
www.youtube.com/watch?v=0f0K...
Godot 4: Glass block shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
January 5, 2026 at 6:03 AM
Hi everyone! This is the first video I’ve published in 2026, and since I wouldn’t like to start the new year with something extremely complicated, this tutorial will be easy and quick. We’ll show how we can simulate a view through something like small glass blocks.
www.youtube.com/watch?v=0f0K...
www.youtube.com/watch?v=0f0K...
Hi everyone! There are only a few days left until the end of 2025, so I’ll release one more video tutorial this year. Once again, it will be a contribution to the category of scene transitions. And I would say that the rotating vertical tiles look quite impressive.
www.youtube.com/watch?v=bLEk...
www.youtube.com/watch?v=bLEk...
Godot 4: Wave transition shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
December 29, 2025 at 7:09 AM
Hi everyone! There are only a few days left until the end of 2025, so I’ll release one more video tutorial this year. Once again, it will be a contribution to the category of scene transitions. And I would say that the rotating vertical tiles look quite impressive.
www.youtube.com/watch?v=bLEk...
www.youtube.com/watch?v=bLEk...
Hi everyone! We’re almost at the end of the year - at least at the time of recording this video—which means we still have time for one more broken-screen effect. This time, it will be a simulation of an LCD monitor that has suffered some sort of internal malfunction.
www.youtube.com/watch?v=RTwP...
www.youtube.com/watch?v=RTwP...
Godot 4: Digital glitch shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
December 22, 2025 at 7:16 AM
Hi everyone! We’re almost at the end of the year - at least at the time of recording this video—which means we still have time for one more broken-screen effect. This time, it will be a simulation of an LCD monitor that has suffered some sort of internal malfunction.
www.youtube.com/watch?v=RTwP...
www.youtube.com/watch?v=RTwP...
Hi everyone! This time we’ll once again take a short break from creating shaders. Instead I’ll describe how we can test a game developed in the Godot Engine on the Steam Deck and what needs to be ensured or verified before we release our game for this console as well.
www.youtube.com/watch?v=VnOL...
www.youtube.com/watch?v=VnOL...
Godot and Steam Deck (tutorial)
YouTube video by FencerDevLog
www.youtube.com
December 15, 2025 at 6:02 AM
Hi everyone! This time we’ll once again take a short break from creating shaders. Instead I’ll describe how we can test a game developed in the Godot Engine on the Steam Deck and what needs to be ensured or verified before we release our game for this console as well.
www.youtube.com/watch?v=VnOL...
www.youtube.com/watch?v=VnOL...
Hi everyone! Didn’t I say recently that you can never have too many scene-transition effects? I’ve just created another one that can also be customized in interesting ways, so it’s basically three effects in one. Let’s take a look at how such a shader works.
www.youtube.com/watch?v=5CME...
www.youtube.com/watch?v=5CME...
Godot 4: Dot transition shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
December 8, 2025 at 6:01 AM
Hi everyone! Didn’t I say recently that you can never have too many scene-transition effects? I’ve just created another one that can also be customized in interesting ways, so it’s basically three effects in one. Let’s take a look at how such a shader works.
www.youtube.com/watch?v=5CME...
www.youtube.com/watch?v=5CME...
Hello everyone! This time we’ll create a shader that simulates playback from a faulty videotape. Yes, it’s a simulation of an outdated technology that’s almost unknown today, but I still think it’s an interesting effect that can find its place in many games.
www.youtube.com/watch?v=_2nG...
www.youtube.com/watch?v=_2nG...
Godot 4: VHS noise shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
December 1, 2025 at 6:05 AM
Hello everyone! This time we’ll create a shader that simulates playback from a faulty videotape. Yes, it’s a simulation of an outdated technology that’s almost unknown today, but I still think it’s an interesting effect that can find its place in many games.
www.youtube.com/watch?v=_2nG...
www.youtube.com/watch?v=_2nG...
Hi everyone! This time, we’ll make another transition effect, and as you can see, it simulates something like a pixelated change of the background image. Let’s take a look at how easily we can program a similar effect.
www.youtube.com/watch?v=D_zZ...
www.youtube.com/watch?v=D_zZ...
Godot 4: Noise transition shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
November 24, 2025 at 6:04 AM
Hi everyone! This time, we’ll make another transition effect, and as you can see, it simulates something like a pixelated change of the background image. Let’s take a look at how easily we can program a similar effect.
www.youtube.com/watch?v=D_zZ...
www.youtube.com/watch?v=D_zZ...
Hello, everybody! In this video, I’ll demonstrate how we can program a shader that simulates a page turning in a book, which is definitely a very effective way to transition between scenes. So let’s launch the Godot editor and get started.
www.youtube.com/watch?v=8aIK...
www.youtube.com/watch?v=8aIK...
Godot 4: Page flip shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
November 17, 2025 at 7:18 AM
Hello, everybody! In this video, I’ll demonstrate how we can program a shader that simulates a page turning in a book, which is definitely a very effective way to transition between scenes. So let’s launch the Godot editor and get started.
www.youtube.com/watch?v=8aIK...
www.youtube.com/watch?v=8aIK...
Hi everyone! Let’s take a short break from post-processing effects. In this tutorial, I’ll be creating a dynamic ornament that at one stage resembles a magical portal and at another something like a fiery eye.
www.youtube.com/watch?v=yRA3...
www.youtube.com/watch?v=yRA3...
Godot 4: Fiery ornament shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
November 10, 2025 at 6:07 AM
Hi everyone! Let’s take a short break from post-processing effects. In this tutorial, I’ll be creating a dynamic ornament that at one stage resembles a magical portal and at another something like a fiery eye.
www.youtube.com/watch?v=yRA3...
www.youtube.com/watch?v=yRA3...
Hi everyone! Let's create another post-processing effect. The result can be quite useful—for example, if we want to simulate TV signal interference in our game and control the visual appearance of that effect with parameters. So, let's do it.
www.youtube.com/watch?v=LJ7r...
www.youtube.com/watch?v=LJ7r...
Godot 4: Horizontal jitter shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
November 3, 2025 at 6:35 AM
Hi everyone! Let's create another post-processing effect. The result can be quite useful—for example, if we want to simulate TV signal interference in our game and control the visual appearance of that effect with parameters. So, let's do it.
www.youtube.com/watch?v=LJ7r...
www.youtube.com/watch?v=LJ7r...
Hi everyone! Last time, I talked about post-processing effects and how it’s useful to have as many of them available as possible. And here we are again, because in this video we’ll be making something new in this category.
www.youtube.com/watch?v=6JEG...
www.youtube.com/watch?v=6JEG...
Godot 4: Underwater shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
October 27, 2025 at 6:08 AM
Hi everyone! Last time, I talked about post-processing effects and how it’s useful to have as many of them available as possible. And here we are again, because in this video we’ll be making something new in this category.
www.youtube.com/watch?v=6JEG...
www.youtube.com/watch?v=6JEG...
Hi everyone! I was thinking that we can never have too many effects for transitions between game screens, so I made a fairly simple one that lets us demonstrate a nice result with an easy formula. Let’s take a look at how easily we can create this.
www.youtube.com/watch?v=yl32...
www.youtube.com/watch?v=yl32...
Godot 4: Stripe transition shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
October 20, 2025 at 5:03 AM
Hi everyone! I was thinking that we can never have too many effects for transitions between game screens, so I made a fairly simple one that lets us demonstrate a nice result with an easy formula. Let’s take a look at how easily we can create this.
www.youtube.com/watch?v=yl32...
www.youtube.com/watch?v=yl32...
Hey everyone! It looks like our collection of shader-generated tunnels has grown once again. This time, as you can see, it’s an interesting effect created purely with points, which we can further adjust as needed. So let’s get to programming it.
www.youtube.com/watch?v=NSCX...
www.youtube.com/watch?v=NSCX...
Godot 4: Point tunnel shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
October 13, 2025 at 5:02 AM
Hey everyone! It looks like our collection of shader-generated tunnels has grown once again. This time, as you can see, it’s an interesting effect created purely with points, which we can further adjust as needed. So let’s get to programming it.
www.youtube.com/watch?v=NSCX...
www.youtube.com/watch?v=NSCX...
Hi everyone! I’d say it’s time for another simple shader. I don’t think we’ve created an infinite zoom here yet, especially if it’s a cool-looking effect that we might be able to use in a game - and if not, it’s still fun to watch. So let’s get to it.
www.youtube.com/watch?v=En9L...
www.youtube.com/watch?v=En9L...
Godot 4: Endless ornament shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
October 6, 2025 at 5:02 AM
Hi everyone! I’d say it’s time for another simple shader. I don’t think we’ve created an infinite zoom here yet, especially if it’s a cool-looking effect that we might be able to use in a game - and if not, it’s still fun to watch. So let’s get to it.
www.youtube.com/watch?v=En9L...
www.youtube.com/watch?v=En9L...
If you’re planning to release your game on Steam, this functionality will be very useful, as it allows you, for example, to save game progress to Steam Cloud or enable various achievements. So, let’s take a look at how we can achieve this in Godot 4.
www.youtube.com/watch?v=Suye...
www.youtube.com/watch?v=Suye...
Godot 4: Steam API tutorial
YouTube video by FencerDevLog
www.youtube.com
September 29, 2025 at 5:03 AM
If you’re planning to release your game on Steam, this functionality will be very useful, as it allows you, for example, to save game progress to Steam Cloud or enable various achievements. So, let’s take a look at how we can achieve this in Godot 4.
www.youtube.com/watch?v=Suye...
www.youtube.com/watch?v=Suye...
Hi everyone! And as I promised in the previous video, today’s one will be somewhat related to the new game release, because I’ll show how I created the system for displaying and using a talent tree in that game. So let’s dive into the UI design and programming.
www.youtube.com/watch?v=A35l...
www.youtube.com/watch?v=A35l...
Godot 4: Dynamic talent tree (tutorial)
YouTube video by FencerDevLog
www.youtube.com
September 22, 2025 at 5:04 AM
Hi everyone! And as I promised in the previous video, today’s one will be somewhat related to the new game release, because I’ll show how I created the system for displaying and using a talent tree in that game. So let’s dive into the UI design and programming.
www.youtube.com/watch?v=A35l...
www.youtube.com/watch?v=A35l...
My new book is out! 618 pages of tutorials, code, images, and insights about game development in Godot 4. During the first week, the discount code 20INTRO is active.
filiprachunek.gumroad.com/l/advanced-g...
filiprachunek.gumroad.com/l/advanced-g...
Godot 4: Advanced Game Development
Do you want to take your indie game development to the next level?Discover the complete process of game development in Godot Engine, including preparation, creating simple assets, building complex UI,...
filiprachunek.gumroad.com
September 19, 2025 at 5:39 AM
My new book is out! 618 pages of tutorials, code, images, and insights about game development in Godot 4. During the first week, the discount code 20INTRO is active.
filiprachunek.gumroad.com/l/advanced-g...
filiprachunek.gumroad.com/l/advanced-g...
Hey everyone! I’ve just finished writing my book about game development in Godot, which means the time I had for coming up with new shaders was once again equal to zero. But I do have something after all. Let’s take a look at how we can create yet another blur effect.
www.youtube.com/watch?v=H_ys...
www.youtube.com/watch?v=H_ys...
Godot 4: Circular blur shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
September 15, 2025 at 5:16 AM
Hey everyone! I’ve just finished writing my book about game development in Godot, which means the time I had for coming up with new shaders was once again equal to zero. But I do have something after all. Let’s take a look at how we can create yet another blur effect.
www.youtube.com/watch?v=H_ys...
www.youtube.com/watch?v=H_ys...
Hi everyone! Let’s create another shader in Godot Engine. I was thinking about how we could combine the organized chaos represented by fractal Brownian motion with image post-processing.
www.youtube.com/watch?v=mN9q...
www.youtube.com/watch?v=mN9q...
Godot 4: Flow noise blur shader (tutorial)
YouTube video by FencerDevLog
www.youtube.com
September 8, 2025 at 5:09 AM
Hi everyone! Let’s create another shader in Godot Engine. I was thinking about how we could combine the organized chaos represented by fractal Brownian motion with image post-processing.
www.youtube.com/watch?v=mN9q...
www.youtube.com/watch?v=mN9q...
Hi everyone! This time I’d like to show how a 2D shader can be used in a 3D scene, which can have plenty of applications in 3D games.
www.youtube.com/watch?v=z2vU...
www.youtube.com/watch?v=z2vU...
Godot 4: 2D shader in 3D scene (tutorial)
YouTube video by FencerDevLog
www.youtube.com
September 1, 2025 at 5:14 AM
Hi everyone! This time I’d like to show how a 2D shader can be used in a 3D scene, which can have plenty of applications in 3D games.
www.youtube.com/watch?v=z2vU...
www.youtube.com/watch?v=z2vU...