Due to floating point differences between importance sampling and texture evaluation, disagreeing on whether or not a ray lies within the sun disc. * Use the same input values for geographical_to_direction() in sky_radiance_nishita() and kernel_data.background.sun. * The mathematical operations in pdf_uniform_cone() were adjusted to match sky_radiance_nishita(). Pull Request: https://projects.blender.org/blender/blender/pulls/106764