ACES in 4.2

[Moriah]

For some reason, changing to renderers.current.options_rgbColorSpace = 2 doesn't make any changes at all in the render, not in color swatches or bitmaps. Also converting an hdri via vraytexOCIO from linear to acescg produces no difference other than a slight change in hue.

VRAY_VFB_AFFECT_SWATCHES also has no changes in the material editor, having the ACES on in the VFB.

Has this workflow changed in Vray Next 4.2?

Is there any scene file that shows how to setup ACEScg in vray next for 3dsmax?

Thank you

[matanov]

For VRayColor you'll need the env VRAY_SHOW_COLOR_SPACE_UI=1.

The VRayHDRI texture map includes the option to perform sRGB -> ACEScg conversion internally on its own. The option is called ocioColorSpace and normally this option is disabled, but it can be enabled from MaxScript on each VRayHDRI map individually (in the future there will be a global option in the renderer for this). If this option is enabled, VRayHDRI will use the OCIOColorSpaceManager:: parseColorSpaceFromString() method to determine the color space of bitmap files. This means that if the file name of the texture contains the string “sRGB” somewhere in it, V-Ray will automatically convert it from sRGB to ACEScg without the need to use additional VRayOCIOTex texture nodes.