Tool textures (GoldSrc)

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Tool textures are used, mostly by the tools but sometimes by the engine, to perform special tasks.

Tool textures (GoldSrc) - Tool textures available in all GoldSrc engine games.
Tool textures (Source) - Tool textures available in all Source engine games.
Tool textures (Source - Third-party) - Tool textures available in third-party Source engine games.
Tool textures (Source 2) - Tool textures available in all Source 2 engine games.

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Tip:Most mappers should use ZHLT.WAD, as it contains all necessary tool textures used by ZHLT, VHLT, and derivatives.

HALFLIFE.WAD

Image	Name	Usage / Notes
	{BLUE	An invisible brush face if attached to `func_wall` or similar brush entity with rendermode solid. Template:ModernWarning
	{INVISIBLE	Functions same as {BLUE.
	AAATRIGGER	Used for trigger brush entities. Note:The version of this texture found in XENO.WAD uses a cropped image of Gabe Newell's face instead.
	BLACK	A plain black texture for unlit areas, such as the bottom of deep pits. Template:ModernWarning
	CLIP	See Clip texture
	ORIGIN	Treated as the origin point for rotating entities, such as `func_door_rotating`.
	SKY	Used for displaying the skybox. Template:ModernBug
	TRANSLUCENT
	WHITE

HLBASICS.WAD

HLBASICS.WAD is found in Counter-Strike: Condition Zero and Day of Defeat, and is used to avoid needing to load HALFLIFE.WAD for maps that don't use base Half-Life textures. ^[Clarify] Some of these are also in Condition Zero Deleted Scenes, via RITUAL_STANDARD.WAD, as well as in Counter-Strike: Condition Zero, via CZRITUAL_STANDARD.WAD.

Image	Name	Usage / Notes
	{blue	An invisible brush face if attached to `func_wall` or similar brush entity with rendermode solid. Template:ModernWarning
	aaa_1
	aaa_2
	aaa_3
	aaa_hurt
	aaa_multi
	aaa_once
	aaa_push
	aaa_push2
	AAATRIGGER	Used for trigger brush entities.
	clip	See Clip texture.
	cr_matleaf	Makes leaf sounds when walked on, if present in `sound/materials.txt`. Tie to a `func_wall` with renderamt set to 0 (aka invisible) to use as a clip brush for leafy props. Template:ModernWarning
	cr_matmetal	Makes metal sounds when walked on, if present in `sound/materials.txt`. Tie to a `func_wall` with renderamt set to 0 (aka invisible) to use as a clip brush for metalic props. Template:ModernWarning
	hint
	ORIGIN	Treated as the origin point for rotating entities, such as `func_door_rotating`.
	SKIP
	sky	Used for displaying the skybox.

Condition Zero only

Image	Name	Usage / Notes
	bark	No special purpose; use cr_matbark instead.
	black	A plain black texture for unlit areas, such as the bottom of deep pits. Template:ModernWarning
	cr_matbark	Makes wood sounds when walked on, if present in `sound/materials.txt`. Tie to a `func_wall` with renderamt set to 0 (aka invisible) to use as a clip brush for metalic props. Template:ModernWarning
	cr_matcard	Unused, likely intended for non-existent "cardboard" material.
	cull	No purpose; likely used by unreleased in-house compilers.
	leaf
	loc	No purpose; likely used by unreleased in-house compilers.
	skycull	No purpose; likely used by unreleased in-house compilers.

Day of Defeat only

Image	Name	Usage / Notes
	cr_mathvymetal	Identical to CR_MATMETAL. Template:ModernBug
	cr_matsand	Makes sand sounds when walked on, if present in `sound/materials.txt`. Tie to a `func_wall` with renderamt set to 0 (aka invisible) to use as a clip brush for metalic props. Template:ModernWarning
	cr_matwood	Makes wood sounds when walked on, if present in `sound/materials.txt`. Tie to a `func_wall` with renderamt set to 0 (aka invisible) to use as a clip brush for metalic props. Template:ModernWarning
	NULL	Identical to ZHLT's NULL texture.

ZHLT.WAD

ZHLT.WAD is used for the additional features provided by the ZHLT and VHLT compilers. It does not come with any vanilla first-party GoldSrc title, but instead comes with ZHLT/VHLT.

Image	Name	Usage / Notes
	AAATRIGGER	Used for trigger brush entities.
	BEVEL
	Black_HIDDEN	Identical to NULL, but has a lightmap.^[Why?]
	BOUNDINGBOX
	CLIP	See Clip texture.
	CLIPBEVEL
	CLIPBEVELBRUSH
	CLIPHULL1	Like CLIP, but only affects standing-up players and regular-sized NPCs.
	CLIPHULL2	Like CLIP, but only affects giant NPCs.
	CLIPHULL3	Like CLIP, but only affects crouching players.
	CONTENTEMPTY
	CONTENTWATER	Not drawn in game, and inverts the normals of all other faces of the brush. Usually used to simulate volumetric lighting.
	HINT
	NOCLIP	Not drawn in game, and disables collision for all faces on the brush.
	NULL	Not drawn in game, seals leaks, and is skipped by HLRAD. Blocks visibility if used on all surfaces of the same brush. Optimally, every face that can't be seen during normal gameplay should have this texture. Note:While no lightmap data is generated on NULL faces, NULL brushes still cast shadows, unless tied to a `func_wall`. Template:ModernTip
	ORIGIN	Treated as the origin point for rotating entities, such as `func_door_rotating`.
	SKIP
	sky	Used for displaying the skybox. Template:ModernBug
	SOLIDHINT