Color Picker Eyedropper does not pick the same Color as getting the Color from the image data

[ghost]

Godot version

4.1

System information

Godot v4.1.stable - Windows 10.0.22621 - Vulkan (Forward+) - integrated Intel(R) Iris(R) Xe Graphics (Intel Corporation; 30.0.101.1660) - 12th Gen Intel(R) Core(TM) i7-1260P (16 Threads)

Issue description

I made an image with only one color and no partially transparent tiles. When I get the list of all colors through code, I get one color. When I use the eyedropper on a color picker to get the same color, the color is different. For example, using a color of 23674e gets me (0.1373, 0.4039, 0.3059, 1) as the color from the image data, and (0.1367, 0.4023, 0.3047, 1) as the color from the color picker eyedropper. This is not close enough for Color.is_equal_approx to count it as the same color.

Steps to reproduce

1. Make an image
2. Get an array of colors from the image via the Image class
3. Get a color from the image via the Color Picker eyedropper
4. The color isn't in the array.

Minimal reproduction project

test.zip

[Calinou]

The error is small enough that this sounds like a off-by-one error or rounding error, rather than a sRGB/linear conversion issue.

[dalexeev]

This is not close enough for Color.is_equal_approx to count it as the same color.

Note that Image has different formats. Try to use Image.FORMAT_RGBAF, I had a similar error with unequal colors.