Material Flags

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Material $flags and $flags2 parameters control how the material is rendered. $flag can be changed in real-time to allow changes in rendering, but $flags2 is read-only and assists the engine or other code in using the material correctly. Enumerations found in https://github.com/ValveSoftware/source-sdk-2013/blob/master/mp/src/public/materialsystem/imaterial.h

The flags can also be set via the .vmt Example:

#Sets the MATERIAL_VAR_VERTEXCOLOR and MATERIAL_VAR_VERTEXALPHA flag
UnlitGeneric
{
$basetexture brick/brickwall003a
$vertexcolor 1
$vertexalpha 1
}

$flags

$flags can contain the following flags:

Flag Hex Value Dec Value Comment
MATERIAL_VAR_DEBUG 0x0001 1
MATERIAL_VAR_NO_DEBUG_OVERRIDE 0x0002 2
MATERIAL_VAR_NO_DRAW 0x0004 4
MATERIAL_VAR_USE_IN_FILLRATE_MODE 0x0008 8
MATERIAL_VAR_VERTEXCOLOR 0x0010 16 $vertexalpha
MATERIAL_VAR_VERTEXALPHA 0x0020 32 $vertexalpha
MATERIAL_VAR_SELFILLUM 0x0040 64 $selfillum
MATERIAL_VAR_ADDITIVE 0x0080 128
MATERIAL_VAR_ALPHATEST 0x0100 256 $alphatest
MATERIAL_VAR_MULTIPASS 0x0200 512
MATERIAL_VAR_ZNEARER 0x0400 1024
MATERIAL_VAR_MODEL 0x0800 2048 $model
MATERIAL_VAR_FLAT 0x1000 4096
MATERIAL_VAR_NOCULL 0x2000 8192 $nocull
MATERIAL_VAR_NOFOG 0x4000 16384 $nofog
MATERIAL_VAR_IGNOREZ 0x8000 32768 $ignorez
MATERIAL_VAR_DECAL 0x10000 65536
MATERIAL_VAR_ENVMAPSPHERE 0x20000 131072
MATERIAL_VAR_NOALPHAMOD 0x40000 262144
MATERIAL_VAR_ENVMAPCAMERASPACE 0x80000 524288
MATERIAL_VAR_BASEALPHAENVMAPMASK 0x100000 1048576
MATERIAL_VAR_TRANSLUCENT 0x200000 2097152 $translucent
MATERIAL_VAR_NORMALMAPALPHAENVMAPMASK 0x400000 4194304
MATERIAL_VAR_NEEDS_SOFTWARE_SKINNING 0x800000 8388608
MATERIAL_VAR_OPAQUETEXTURE 0x1000000 16777216
MATERIAL_VAR_ENVMAPMODE 0x2000000 33554432
MATERIAL_VAR_SUPPRESS_DECALS 0x4000000 67108864
MATERIAL_VAR_HALFLAMBERT 0x8000000 134217728 Half Lambert
MATERIAL_VAR_WIREFRAME 0x10000000 268435456
MATERIAL_VAR_ALLOWALPHATOCOVERAGE 0x20000000 536870912
MATERIAL_VAR_IGNORE_ALPHA_MODULATION 0x40000000 1073741824

$flags2

$flags2 can contain the following flags:

Flag Dec Value Comment
MATERIAL_VAR2_LIGHTING_UNLIT 0
MATERIAL_VAR2_LIGHTING_VERTEX_LIT 1
MATERIAL_VAR2_LIGHTING_LIGHTMAP0 2
MATERIAL_VAR2_LIGHTING_BUMPED_LIGHTMAP 4
MATERIAL_VAR2_LIGHTING_MASK 7 Sum of 3 above
MATERIAL_VAR2_DIFFUSE_BUMPMAPPED_MODEL 8
MATERIAL_VAR2_USES_ENV_CUBEMAP 16
MATERIAL_VAR2_NEEDS_TANGENT_SPACES 32
MATERIAL_VAR2_NEEDS_SOFTWARE_LIGHTING 64
MATERIAL_VAR2_BLEND_WITH_LIGHTMAP_ALPHA 128
MATERIAL_VAR2_NEEDS_BAKED_LIGHTING_SNAPSHOTS 256
MATERIAL_VAR2_USE_FLASHLIGHT 512
MATERIAL_VAR2_USE_FIXED_FUNCTION_BAKED_LIGHTING 1024
MATERIAL_VAR2_NEEDS_FIXED_FUNCTION_FLASHLIGHT 2048
MATERIAL_VAR2_USE_EDITOR 4096
MATERIAL_VAR2_NEEDS_POWER_OF_TWO_FRAME_BUFFER_TEXTURE 8192
MATERIAL_VAR2_NEEDS_FULL_FRAME_BUFFER_TEXTURE 16384
MATERIAL_VAR2_IS_SPRITECARD 32768
MATERIAL_VAR2_USES_VERTEXID 65536
MATERIAL_VAR2_SUPPORTS_HW_SKINNING 131072
MATERIAL_VAR2_SUPPORTS_FLASHLIGHT 262144