Way to getting 16-bit RGB values of a target pixel of the scene

Hi, is there any way to read 16-bit RGB values of a target pixel of the scene?

I used the following code, but only 8-bit RGBA values were collected.

const pixels = viewer.scene.context.readPixels({
x: 500,
y: 500,
width: 1,
height: 1,
});
console.log(pixels);

Best regards,

Eric.

Hi, hi! Can someone give me some suggestions?
Many thanks!