hl2_ep2_content/materials/sprites/glow_test01.vmt

"Sprite"
{
	"$spriteorientation" "vp_parallel"
	"$spriteorigin" "[ 0.50 0.00 ]"
	"$basetexture" "sprites/glow_test01"
	"$ignorevertexcolors" 1
	"Proxies"
	{
		"lampbeam"
		{
		}
	}
}