A shader for Unity that generates moving grating patterns.
- The Unity game engine. Get it here: https://unity3d.com/unity
Start a Unity project or open an existing one
Copy the GratingShader.shader file into the Assets folder
You can apply this material to any GameObject that has a Mesh Renderer component.
Full screen mode
To render a grating pattern such that it covers the whole screen:
- Download the FullScreenMaterial.cs script
- Put it in your Assets forlder
- Select the Main Camera of your scene and drag the script onto the inspector
- Choose a material you want to render as the Material property of the script
You can customize how the grating pattern looks by selecting a Material that uses the GratingShader and changing its values in the inspector.
- Direction controls which way the lines of the pattern are aligned (in degrees). 0 is completely horizontal with the lines moving from top to bottom. Increasing the value rotates the pattern clockwise.
- Speed controls how fast the animation is playing. Note: The animation only plays while you are in play mode.
- Density controls how many lines are drawn
- Modulation can be toggled between Sine and Square. The former results in smooth edges, the latter in sharp ones.
- Tint Color as the name implies tints the pattern with the selected color.
- Starting Phase sets an offset in degrees. This is proportional to the frequency so an offset of 360 looks exactly the same as 0.
- Texture can be optionally set to any image that you imported as an asset by dragging it onto the texture property. The image will be overlayed to the pattern. Tip: For a smooth circular cutoff you can use the Default-Particle texture built into Unity (press the Select button).