Shadows on water surfaces#1965
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Description
Adds support for the $lightmapwaterfog water texture param used in games post l4d2. I wasn't able to get the scale to which the shadow is applied to the fog colour, so I made it depend on the alpha value of the water fog colour.
Keep in mind, water with this parameter needs to have a lightmap. Depending on the bsp compiler used, setting $lightmapwaterfog before compiling may be enough, or you may have to add a compiler flag like "%compileKeepLight". You can check if a water surface has a lightmap with the mat_luxels 1 command. If the surface is entirely filled in in blue, there is no lightmap. If instead you can see a square grid pattern corresponding to the lightmap resolution, the water has a lightmap.
Some example images
$lightmapwaterfog 0
$lightmapwaterfog 1 $fogcolor" "{52 49 44 0}
$lightmapwaterfog 1 $fogcolor" "{52 49 44 1}
Toolchain