GetPixel, problem to get correct color

Hi I have the following image; a PNG 800x800



when I try to get the colour at the following position 100, 560 of the texture (texture coordinates)

GetPixel

returns the colour 0.477, 0.477, 0.788.

However, this is not the correct colour. In fact if, for example, I open the same image in Photoshop at the same coordinates (100, 240 starting from the top left corner) it gives me 0.000, 0.745, 0.443 (or as byte values 0, 190, 113) as colour.



In fact, if I place a sprite at the coordinates (-300, 160 World Position) in Unity for example, you can clearly see that that pixel is on the green colour (0.000, 0.745, 0.443) and not on the blue colour ( 0.477, 0.477, 0.788) of the background.



I imported the image with:

• wrap mode -> clamp
• fliter mode -> point no filter
• format -> rgba32 no compression

Any help? Is this a bug or is this something else?

Thanks!

 

have you disabled scaling? (set to none)


and try using SetPixel() to verify you are in the right pixel coordinate?

 

I imported the image as Sprite (2D and UI) so I haven't that option.

 

I have used SetPixel to draw a black pixel at same coordinates (100,560 in texture coordinate).



As you can see from the image below the pixel has been rendered at the position (100,560 in texture coordinates) but this position does not correspond to where it should have been rendered... is there some strange offset? If this is the problem, I don't understand....

I explain better World Coordinate -> -300, 160 are equals to Photoshop Screen Coordinates (100, 240) that are equals to Unity Texture Coordinates (100, 560). However as we can see, the color is different.
So it seems as the pixel is get and set at wrong coordinates...

 

any solution for this?
I'm experiencing the same issue on unity 2021.3.4f