I previously posted a list of values I was using for the d3d8.ini file based on the initial October release of the 2019 shaders. With the updated December release I noticed that there was a Terrain and Scenery section that changed. These parameters are new with the 2019 versions and their values are mostly undocumented, so I have no idea how to go about adjusting them.
The initial October release had:
; Terrain Lighting and Bump Mapping
TerrainDiffuse=1
TerrainDetailBump=0.2
TerrainDetailColor=0.75
TerrainSpecular=0.5,0.5,0.5
TerrainBumpFactor=0.125,0.125,0.125
; Scenery Lighting
SceneryDiffuse=0.5
; Facility Lighting - FacilityBrightness works as a multiplier for diffuse color of building. So if you have a texture pixel with RGB value = 200 and FacilityBrightness = 0.8 the result will appear as if RGB value was 200 * 0.8 = 160. It can also make objects brighter if you use value >1.0.
FacilityBrightness=0.825
The revised December version has:
TerrainDiffuse=1.5
TerrainDetailBump=0.5
TerrainDetailColor=1.0
TerrainSpecular=-8.4, 8.0, 2.4
TerrainGlossiness=4.0
TerrainBumpFactor=1.0, 1.6, -3.0
; Scenery Lighting
SceneryDiffuse=1.0
; Facility Lighting - FacilityBrightness works as a multiplier for diffuse color of building.
; So if you have a texture pixel with RGB value = 200 and FacilityBrightness = 0.8 the result will appear as if RGB value was 200 * 0.8 = 160. It can also make objects brighter if you use value >1.0.
FacilityBrightness=1.0
The December version is a much closer match to the way the terrain looked with all the previous versions of AnKor's shaders. The October values are much more flat and dark, so I'm going with the December values as the default now.