Sometimes i use Corona to bake geometric details onto flat surface and recently i noticed that it incorrectly saves normal shading render element. Flat surface that is perpendicular to the bottom facing camera, should have 128 128 255 colour, but it is saved as 127 127 255 instead. I did little experiment, rendered such surface with 128 128 255 sRGB colour assigned, with flat white lighting, then saved beauty and NormalShading RE. Both elements displayed correctly in VFB, but only beauty has been saved correctly. One thing i noticed, that normal element in VFB was 0.50000 0.50000 1.00000 (tonemapped sRGB), but beauty was 0.50205 0.50205 1.00000 and that got me thinking, could this be a rounding error? If so, can something be done about it? 127 127 255 in normal map is a big issue when renderer expects 128 128 255. For now, i'm correcting baked textures in Affinity, but that's hardly a viable solution.
