Info about Terrain sector texturing.

struct SSectorTextureSet {
  unsigned short nTex0, nTex1;
  float fTexOffsetX, fTexOffsetY, fTexScale, fTerrainMinZ, fTerrainMaxZ;
  AABB nodeBox;
  AABB stencilBox;
};

IRenderer.h

float fTerrainMaxZ;

float fTerrainMinZ;

float fTexOffsetX;

float fTexOffsetY;

float fTexScale;

AABB nodeBox;

unsigned short nTex0;

unsigned short nTex1;

AABB stencilBox;

SSectorTextureSet(unsigned short nT0, unsigned short nT1);