user_texture_idRenderer texture identifier (ImTextureID bigint), not an SFML texture object.
image_sizeDisplayed image width and height in screen pixels, independent of texture dimensions.
uv0Texture coordinates at the upper-left corner; (0,0) is the usual full-image start.
uv1Texture coordinates at the lower-right corner; (1,1) is the usual full-image end.
Display a texture image as a non-interactive widget.