Poly flags

These are all the surface (poly) flags used in UE1

To check for a flag in script:

local Actor aBrush;
local name TexName, TexGroup;
local int TexFlags;
local Vector HitLoc, HitNorm, TraceStart, TraceEnd;
local bool bSpecialPoly;

TraceStart = Location;
TraceEnd = TraceStart + Vector(ViewRotation) * 128;

foreach TraceTexture(class'Actor', aBrush, TexName, TexGroup, TexFlags, HitLoc, HitNorm, TraceEnd, TraceStart)
    bSpecialPoly = (TexFlags & 4096) == 4096;

Bit	Value (dec)	Value (hex)	Name	Description
	0	0x0		Use settings from Surface Properties for each individual surface of the brush.
0	1	0x1	PF_Invisible	Polygon is invisible.
1	2	0x2	PF_Masked	Polygon should be drawn masked. Use for palettized textures to make the first color in the palette (in Paint Shop Pro at least) invisible, see Color Blending.
2	4	0x4	PF_Translucent	Darker parts of the texture become transparent, see Color Blending.
3	8	0x8	PF_NotSolid	Polygon is not solid doesn't block.
4	16	0x10	PF_Environment	Polygon should be drawn environment mapped.
4	16	0x10	PF_ForceViewZone	Force current iViewZone in OccludeBSP (reuse Environment flag).
5	32	0x20	PF_Semisolid	Polygon is semi-solid, collision solid CSG nonsolid.
6	64	0x40	PF_Modulated	Greyer parts of the texture become transparent, see Color Blending.
7	128	0x80	PF_FakeBackdrop	Poly looks exactly like backdrop (parallax SkyBox visible through surface).
8	256	0x100	PF_TwoSided	Poly is visible from both sides.
9	512	0x200	PF_AutoUPan	Automatically pans in U direction; change speed in ZoneInfo or LevelInfo -> ZoneLight.
10	1024	0x400	PF_AutoVPan	Automatically pans in V direction; change speed in ZoneInfo or LevelInfo -> ZoneLight.
11	2048	0x800	PF_NoSmooth	Don't smooth textures.
12	4096	0x1000	PF_BigWavy	Poly has a big wavy pattern in it.
12	4096	0x1000	PF_SpecialPoly	Game-specific poly-level render control (reuse BigWavy flag).
13	8192	0x2000	PF_SmallWavy	Small wavy pattern (for water/enviro reflection).
14	16384	0x4000	PF_Flat	Flat surface.
15	32768	0x8000	PF_LowShadowDetail	Reduces shadow detail; in conjunction with High Shadow Detail (below), makes extra low shadow detail
16	65536	0x10000	PF_NoMerge	Don't merge poly's nodes before lighting when rendering.
17	131072	0x20000	PF_CloudWavy	Polygon appears wavy like clouds.
18	262144	0x40000	PF_DirtyShadows	Dirty shadows.
19	524288	0x80000	PF_BrightCorners	Brighten convex corners; no dark shadows at the edges of the surface.
20	1048576	0x100000	PF_SpecialLit	Surface only gets light from Special Lit lights.
21	2097152	0x200000	PF_Gouraud	Gouraud shaded.
21	2097152	0x200000	PF_NoBoundRejection	Disable bound rejection in OccludeBSP (reuse Gourard flag).
22	4194304	0x400000	PF_Unlit	Surface ignores lighting and is full bright.
23	8388608	0x800000	PF_HighShadowDetail	Enhances shadow detail.
24	16777216	0x1000000	PF_Memorized	Editor: Poly is remembered.
24	16777216	0x1000000	PF_RenderHint	Internal: Rendering optimization hint.
25	33554432	0x2000000	PF_Selected	Editor: Poly is selected.
26	67108864	0x4000000	PF_Portal	Portal between iZones.
27	134217728	0x8000000	PF_Mirrored	Reflective surface.
28	268435456	0x10000000	PF_Highlighted	Editor: Poly is highlighted.
29	536870912	0x20000000		(unused?)
30	1073741824	0x40000000	PF_FlatShaded	FPoly has been split by SplitPolyWithPlane.
30	1073741824	0x40000000	PF_EdProcessed	Internal: FPoly was already processed in editorBuildFPolys.
30	1073741824	0x40000000	PF_RenderFog	Internal: Render with fogmapping.
31	2147483648	0x80000000	PF_EdCut	Internal: FPoly has been split by SplitPolyWithPlane.
31	2147483648	0x80000000	PF_Occlude	Internal: Occludes even if PF_NoOcclude.