Shadows on water surfaces

[AdamTadeusz]

Description

neo assets pr NeotokyoRebuild/neoAssets#120

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

• Windows MSVC VS2022