- orig:
- HL: (how does this map?)
	- Render: Normal (по умолчанию), Color, Texture, Glow, Solid, Additive
	- Render FX: разные пульсации, строб, плавные переходы, Constant Glow, Distort, Hologram (Distort + fade)
- brush:
	- opaque:
		- "diffuse": pbr (diffuse, metallic, roughness, ...)
		- reflective: specular, ...
		- emissive
	- semi-opaque: alpha mask + same as opaque
	- transparent:
		- glass:
			- reflective
			- translucent + refractions
		- additive:
			- ???
- studio:
	- normal: ~same as opaque
	- float: ???
	- chrome:
		- reflective
	- glow shell
		- transparent-additive
	- x rendermode ???
- sprite
	- transparent additive:
		- fake bloom (rtx: just disable)
		- misc: smoke, explosions (rtx: custom shader?)
	- can generally be in all "HL Render/FX" modes
- beams:
	- can have custom color?
	- transparent additive
		- rtx: needs custom shader
	- can generally be in all "HL Render/FX" modes
- decals: ???
- rtx proposal:
- kusok
	- bool alpha_mask -- whether need to check alpha mask for boolean anyhit transparency
	- render modes:
		- opaque
			- emissive
			- diffuse
			- specular/reflection
		- transparent additive -- render_mode
			- force emissive
			- no diffuse, specular, ...
		- translucent -- render_mode
			- ? diffuse
			- (? specular)/reflection
			- refraction
		- sky?
			- emissive cubemap