This seems like a very basic thing and I feel like I used to somehow use this but maybe that was before I started with vray.
I use basic linear work flow. In an exterior scene I use physical camera, vray sun/sky. I have vray sky in the Max Environment map slot and also instanced into vray environment and vray reflection map slots. On render I see the sky in background. If I turn off/uncheck the vray sky in the Max environment it still affects the render as before but I get black background and “perfect” alpha. So far so good.
I want to be able to show a bitmap/site photo behind my rendering. I want to be able to adjust my scene materials and lighting to match the bitmap background photo. I do not want that background photo to be affected by any rendering process or lighting or etc.
I tried putting the background photo into the Max environment slot. I instanced the map to the material editor and made sure it was set to environment screen mapping, still just renders with black background.
I see the background image button in the vray frame buffer. I click the button but nothing seems to happen. I can’t seem to find any info in the vray docs on how to use this.
Any help sorting this out will be much appreciated.
