Terrain Basemap Bug with Linear Space Lighting

After switching my project settings to use linear space lighting (such an improvement, by the way!) the basemaps of my terrains render the wrong way. Turning the directional light on or off doesn't seem to matter, the brightness different seems to persist irrespective of the lighting setup in the scene.



Uneducated guess: The basemaps didn't get the memo regarding the transition to linear space. Or am I doing something wrong here?

I'll submit a bug report if it turns out I can't fix it myself.

 

Thanks for mentioning the import settings. It turns out some of the Nature Pack's texture import settings had the 'bypass sRGB' setting still flagged by default. I feel a bit silly for not noticing this.

Fixing these settings improves it, but there's still a small difference in lightness. Here's a screenshot of the effect and the current import settings:



This is using Unity 3.5.1f2

 

I am using 4.1.5f with linear space and also find the base map is mixing the splat maps in gamma space rather than linear space. Do 50% dirt, 50% grass and outside your base map distance it will be grassier because the darker grass is getting a gamma boost.. Texture option generate mipmaps in linear space does not make a difference. Textures have bypass sRGB checked off.

Go back to gamma space rendering and the base map matches the near splat map mixing.

Workaround is maxing out base map distance and taking the fps hit, or not using the splat maps.

[EDIT turns out I had splat mats that I had normalized using the vector normalize function which makes the magnitude 1.0, but splat mats want the sum to be 1.0. Found a post that suggested testing by making all textures the same, if brightness varies the splat mats are not normalized]

 

Lars,

Is there an issue using the shaders with Linear Lighting and HDR? I have noticed that the billboarded tree's go very dark unlike when in forward lighting mode. Is this a unity bug or is this something that i can solve with your shaders?