I want to make the background of a scene pure white [255, 255, 255] and so far I’ve found this is only possible while using the ColorGradingEffect with the tonemapper set to retro.
To clarify, here’s an example where retro tonemapping is set to default vs retro and the skybox is white.
As you can see however this does render as pure white, but a byproduct of this is that the background appears emissive now.
I attempted to add a bloom effect and set the intensity to 0, which does remove the emissive byproduct, but now we no longer achieves pure white (instead we get [253, 253, 253]). This also adds another undesired byproduct which is that things that actually should be emissive (i.e. neon) don’t glow.
Here I use a highlight will fill transparency set to zero. This does provide the desired pure white output, but I noticed that anything with transparency rendered in front of the highlight part doesn’t render at all!
These models are both in front of the white highlight
3. Fog
I searched a fair bit for info on this problem and I’m def not the first person to run into it. One of the common recomendations was to use fog + an inverted sphere mesh. However, these posts were from a couple of years ago and as far as I can tell does not work anymore.
So, aside from these, does anyone know of any working techniques to do this or is it simply impossible?
Skyboxes don’t render as pure white unless the tonemapper is set to retro.
I tried the atmosphere with haze set to 10 as you suggested, but that only bumps up the color from [223, 233, 233] to [224, 224, 244] so that doesn’t seem to work either unfortunately.
I already discussed this in my post as something that doesn’t work.
Also could you maybe try the inverted sphere idea again but this time making the sphere kind of anchored to the head of the player? Also making it neon.
You can achieve this with a Highlight that’s behind everything with:
[0, 0, 0] FillColor
1.15 FillTransparency (might need tweaking based on lighting, higher = brighter)
Occluded DepthMode
0.9999999 OutlineTransparency (outline has to be visible if FillTransparency is above 1)
This Highlight brightens the background which can pump up the (~225, ~225, ~225) color of a white BillboardGui to (255, 255, 255).
As a bonus you can use any Sky you want. Of course you can also use a white skybox which also means that you wont need a ´BillboardGui´ to achieve the pure white color.
A downside is that the Highlight also brightens up transparent parts, particles, beams etc.
Because the tonemapper changes the colors of the other stuff in the scene. Ideally, I could get a pure white background in any lighting configuration so that the foreground remains unchanged.
