How do I create a texture dynamically in Unity?

Question

For example I want to create a 2 x 2 texture.

The upper left pixel would be White.
The upper right pixel would be Black.
The lower left pixel would be 50% transparent Black.
The lower right pixel would be 100% transparent.

Thanks,
Sammual

Answer 1

Best Answer

Answer by Jaap Kreijkamp · Jan 09, 2010 at 02:55 AM

 function Start () {
     // Create a new 2x2 texture ARGB32 (32 bit with alpha) and no mipmaps
     var texture = new Texture2D(2, 2, TextureFormat.ARGB32, false);
 
     // set the pixel values
     texture.SetPixel(0, 0, Color(1.0, 1.0, 1.0, 0.5));
     texture.SetPixel(1, 0, Color.clear);
     texture.SetPixel(0, 1, Color.white);
     texture.SetPixel(1, 1, Color.black);
 
     // Apply all SetPixel calls
     texture.Apply();
 
     // connect texture to material of GameObject this script is attached to
     renderer.material.mainTexture = texture;
 }

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Sammual12 · Jan 09, 2010 at 04:42 AM 1

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Other then changing texture.SetPixel(0, 0, Color(1.0, 1.0, 1.0, 0.5)); to texture.SetPixel(0, 0, Color(0, 0, 0, 0.5)); that was exactly what I needed.
Thank you!

Eowyn27 · Mar 12, 2015 at 03:37 PM 0

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@Jaap $$anonymous$$reijkamp, Hi I have a question related to this topic: http://answers.unity3d.com/questions/922309/applying-contrast-makes-the-image-black.html

Answer 2

Answer by Meltdown · Jul 02, 2015 at 04:55 AM

C# version for all the cool coders out there :)

 void Start()
     {
         // Create a new 2x2 texture ARGB32 (32 bit with alpha) and no mipmaps
         var texture = new Texture2D(2, 2, TextureFormat.ARGB32, false);
         
         // set the pixel values
         texture.SetPixel(0, 0, new Color(1.0f, 1.0f, 1.0f, 0.5f));
         texture.SetPixel(1, 0, Color.clear);
         texture.SetPixel(0, 1, Color.white);
         texture.SetPixel(1, 1, Color.black);
         
         // Apply all SetPixel calls
         texture.Apply();
         
         // connect texture to material of GameObject this script is attached to
         GetComponent<Renderer>().material.mainTexture = texture;
     }

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mfahadminhas · Aug 05, 2016 at 07:17 PM 0

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How can we do it if we have a camera frame and we want to use it as a texture? How can we convert the Image to texture?

Kyuugatsu mfahadminhas · Aug 05, 2016 at 07:50 PM 0

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Use: https://docs.unity3d.com/ScriptReference/Camera-targetTexture.html

MandL27 · Aug 25, 2016 at 08:08 PM 1

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How could I make texture.SetPixel() use ARGB data from an existing texture (e.g. making (24,0) on the new texture being the same color and alpha as (0,0) on an existing texture)?

monteredento · Dec 29, 2021 at 09:41 PM 0

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It has been some time since you posted this, thanks. But I can't get it to work. It shows an error about namespace. Any ideas?

How do I create a texture dynamically in Unity?

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