Ok, so the pizza is a lie texture is named ‘c2a4x_pizzalie_graffiti.vtf’.
I went into windows search options and added the .bsp extension, and gave it a plain text filter. Next I went into the maps folder and did a search for ‘c2a4x_pizzalie_graffiti’ then search contents.
This is what I found:
background11.bsp
referenced in list
bm_c0a0a.bsp
{
"origin" "5086.06 2884 -1041.58"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "780998"
}
{
"origin" "4441.37 2636 -51.087"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "781007"
}
referenced in list
bm_c1a0a.bsp
{
"origin" "-1362.79 -704.532 645.904"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "3308130"
}
{
"origin" "930.802 -2512 -1115.2"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "3308133"
}
not referenced in list
bm_c2a4b.bsp
{
"origin" "-604.421 -2920 -696.178"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "1170220"
}
not referenced in list
bm_c2a4c.bsp
{
"origin" "-1078.38 -327.876 112"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "1344321"
}
not referenced in list
bm_c2a4g.bsp
referenced in list
bm_c2a4h.bsp
{
"origin" "-1657.45 -4195.52 -416"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "1033696"
}
{
"origin" "2947.11 -1079.26 400"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "1067183"
}
referenced in list
bm_c2a5a.bsp
{
"origin" "-2299.57 -3250.95 1854.72"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "993733"
}
not referenced in list
bm_c3a1b.bsp
{
"origin" "-1760.48 1376 -1498.58"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "2049189"
}
not referenced in list
bm_c3a2a.bsp
{
"origin" "3043.69 -1261.05 -2496"
"texture" "decals/c2a4x_pizzalie_graffiti"
"classname" "infodecal"
"hammerid" "4886235"
}
not referenced in list
So there are 2 different ways that the .bsp files referenced this texture:
The first was in a big ASCII encoded section of the file that includes the location, hammerid, etc.
The second was in a null byte separated list elsewhere in the file. This reference didn’t include any extra information about where the decal would be located. I’m not even sure what the list represents. It was found in some maps that had the coordinates, found in some maps that did not have the coordinates, and also absent in some maps that did have coordinates.