Uploaded October 2022 | Updated September 2026, 1 hour ago
In this Unity tutorial you'll learn how to sample texture data from within your C# scripts and do something based on the sampled result. Specifically today we'll be using the grayscale value of the colors to choose a weighted random pixel. Once we know that we'll be updating a virtual texture on a SpriteRenderer to show us the bounds of where we were sampling and the specific pixel sampled each time.
Reading texture data in your scripts has a wide variety of applications in Unity. From Editor Scripting to show brushes, to runtime weighted bullet spread there's as many options as you can come up with!
🔶 ALL THINGS LlamAcademy now available at: https://llamacademy.dev/support including latest tutorials, courses, ways to support, and more! Check it out 🙂
👨💻 Get the FULL FREE PROJECT on GitHub: github.com/llamacademy/read-texture-data
🏷️Save 25% on the ultimate C# IDE: JetBrains Rider with code LLAMACADEMY: jetbrains.com/store/?section=personal&billing=yearly
📚 Resources
🟠 Get Pixels: docs.unity3d.com/ScriptReference/Texture2D.GetPixels.html
🟠 Get Raw Texture Data: docs.unity3d.com/ScriptReference/Texture2D.GetRawTextureData.html
🟠 Create Sprite: docs.unity3d.com/ScriptReference/Sprite.Create.html
🟠 Create Texture2D: docs.unity3d.com/ScriptReference/Texture2D-ctor.html
Some links may be affiliate links, which at no additional cost to you, gives me a small portion of the purchase.
Chapters:
00:00 Topic Introduction
01:30 Variables & Setup - SampleTextureOnClick.cs
02:48 Handling Click - SampleTextureOnClick.cs
03:03 Sampling a Texture with Weighted Random Grayscale - SampleTextureOnClick.cs
05:55 Mapping 1D Color Array to 2D Pixel Coordinates - SampleTextureOnClick.cs
07:16 Writing to a Texture - SampleTextureOnClick.cs
07:36 Become a Supporter
08:08 IMPORTANT Texture Settings & Demo
08:49 Performance Considerations
In this Unity tutorial you'll learn how to sample texture data from within your C# scripts and do something based on the sampled result. Specifically today we'll be using the grayscale value of the colors to choose a weighted random pixel. Once we know that we'll be updating a virtual texture on a SpriteRenderer to show us the bounds of where we were sampling and the specific pixel sampled each time.
Reading texture data in your scripts has a wide variety of applications in Unity. From Editor Scripting to show brushes, to runtime weighted bullet spread there's as many options as you can come up with!
🔶 ALL THINGS LlamAcademy now available at: https://llamacademy.dev/support including latest tutorials, courses, ways to support, and more! Check it out 🙂
👨💻 Get the FULL FREE PROJECT on GitHub: github.com/llamacademy/read-texture-data
🏷️Save 25% on the ultimate C# IDE: JetBrains Rider with code LLAMACADEMY: jetbrains.com/store/?section=personal&billing=yearly
📚 Resources
🟠 Get Pixels: docs.unity3d.com/ScriptReference/Texture2D.GetPixels.html
🟠 Get Raw Texture Data: docs.unity3d.com/ScriptReference/Texture2D.GetRawTextureData.html
🟠 Create Sprite: docs.unity3d.com/ScriptReference/Sprite.Create.html
🟠 Create Texture2D: docs.unity3d.com/ScriptReference/Texture2D-ctor.html
Some links may be affiliate links, which at no additional cost to you, gives me a small portion of the purchase.
Chapters:
00:00 Topic Introduction
01:30 Variables & Setup - SampleTextureOnClick.cs
02:48 Handling Click - SampleTextureOnClick.cs
03:03 Sampling a Texture with Weighted Random Grayscale - SampleTextureOnClick.cs
05:55 Mapping 1D Color Array to 2D Pixel Coordinates - SampleTextureOnClick.cs
07:16 Writing to a Texture - SampleTextureOnClick.cs
07:36 Become a Supporter
08:08 IMPORTANT Texture Settings & Demo
08:49 Performance Considerations
