GetPixels returns an array of "empty" colors.

Hello, I need to get the pixels from a sprite I created at runtime with "Sprite.Create" but "GetPixels" returns an array of RGBA(1.0, 1.0, 1.0, 0.0) colors, which turns into an empty sprite. The base sprite is fine and I checked the sprite's texture and it's readable, any idea how to fix it please?

Here's the code:

Code (CSharp):

1. private void BuildSprite_1()
2.     {
3.         Sprite sprite = SpriteManager.Instance.GetSprite("LoamySoil");
4.         Debug.Log(string.Format("Width {0}  Height {1}  isReadable {2}", sprite.texture.width, sprite.texture.height, sprite.texture.isReadable));
5.  
6.         int tileResolution_x = (int)sprite.rect.width;// sprite.texture.width; //64;
7.         int tileResolution_y = (int)sprite.rect.height;// sprite.texture.height; //32;
8.        
9.         int textureWidth = tileResolution_x;// sprite.texture.width;
10.         int textureHeight = tileResolution_y;// sprite.texture.height;
11.         Texture2D texture = new Texture2D(textureWidth, textureHeight);
12.        
13.         Color[] tilePixels = sprite.texture.GetPixels(0, 0, tileResolution_x, tileResolution_y);
14.         foreach (Color c in tilePixels)
15.         {
16.             Debug.Log(c);
17.         }
18.         texture.SetPixels(0, 0, tileResolution_x, tileResolution_y, tilePixels);
19.  
20.         texture.wrapMode = TextureWrapMode.Clamp;
21.         texture.filterMode = FilterMode.Point;
22.         texture.Apply();
23.  
24.         uint extrude = 1;
25.         SpriteMeshType spriteMeshType = SpriteMeshType.Tight;
26.  
27.         int rect_x = 0;
28.         int rect_y = 0;
29.         int width = textureWidth;
30.         int height = textureHeight;
31.         Rect spriteRect = new Rect(rect_x, rect_y, width, height);
32.         float pivotPointX = 0.0f;
33.         float pivotPointY = 0.0f;
34.         Vector2 pivotPoint = new Vector2(pivotPointX / width, pivotPointY / height);
35.         int pixelsPerUnit = 32;
36.  
37.         Sprite newSprite = Sprite.Create(texture, spriteRect, pivotPoint, pixelsPerUnit, extrude, spriteMeshType);
38.  
39.         GameObject go = new GameObject("NewSprite");
40.         SpriteRenderer spriteRen = go.AddComponent<SpriteRenderer>();
41.         spriteRen.sprite = newSprite;
42.     }

 

Your Alpha (the fourth value in RGBA) is Zero, meaning Zero opacit = full transfparency. Try changing it to 1.0

 

I know that, that is the problem..GetPixels should returns an array of colors (the sprite is green), instead the array has got only black transparent colors.

 

To nitpick, if what you write is true, it has white transparent pixels - not that you and I could tell the differece - can you try the simpler Create() call without pixelsPerUnit? I know C# should convert the int to float, but I've seen stranger things go wrong, and here we simply eliminate more thaings that can go wrong.

 

Yes sorry, white, I was thinking about Color32 (1-255) instead of Color (0-1).

Anyway I solved the problem, I was using (0, 0) to set the starting point for GetPixels because I thought that the sprite.rect and its texture had the same size, which is not true..the sprite.rect is 64x32 while the texture is 1024x512..I have no idea why it's like that..is that the minimum size for a texture when you use Sprite.Create?
So I changed the origin from (0, 0) to (int)sprite.rect.min.x and (int)sprite.rect.min.y and now it's working.

Still I'm really curious to know why sprite.rect and sprite.texture have completely different sizes.