How can i make the backdrop white in a PBR Supporting viewer?

Question

With the latest Firestorm Beta my backdrop always shows as grey when I set it as white. Is anyone else having this problem or found a workaround for it? I have tried messing with the RGB settings and also uploaded and added a blank white texture but it always shows as grey. Other white objects do show as white with the viewer including the edge at the bottom of the stand but the backdrop always shows grey.

Answer 1

In the photo tool, enable the 'no postprocessing' checkbox, that will disable auto exposure, that tends to darken the image due to a significant proportion of the screen being very bright when white backdrop is in use.

Answer 2

From https://community.secondlife.com/forums/topic/502688-firestorm-pbr-alpha-viewer/page/3/:

"To avoid auto-adjustment to HDR tone mapping of legacy sky settings (the ones without a ”reflection probe ambiance” parameter), set the ”RenderSkyAutoAdjustLegacy” debug setting to FALSE."

To change the debug setting, in the viewer menu, select Advanced > Show Debug Settings (or hit Ctrl+Alt+Shift+S).