XModel Surface Asset

The xmodel surface (xmodelsurf) is an asset dedicated to holding the XSurfaces from the XModel. This asset was added on Modern Warfare 2, and stayed for Modern Warfare 3 and Ghosts, Treyarch however continues to keep this part of the XModel asset.

Modern Warfare 2

struct XSurfaceVertexInfo
{
  __int16 vertCount[4];
  unsigned __int16 *vertsBlend;

  /*Count... Ok, here we go...

   (((vertCount[2] << 2) + vertCount[2]) +
  ((vertCount[3] << 3) - vertCount[3]) +
  ((vertCount[1] << 1) + vertCount[1])
  + vertCount[0]) << 1*/
};

union GfxColor
{
  unsigned int packed;
  char array[4];
};

union PackedTexCoords
{
  unsigned int packed;
};

union PackedUnitVec
{
  unsigned int packed;
};

struct GfxPackedVertex
{
  float xyz[3];
  float binormalSign;
  GfxColor color;
  PackedTexCoords texCoord;
  PackedUnitVec normal;
  PackedUnitVec tangent;
};

struct XSurfaceCollisionAabb
{
  unsigned __int16 mins[3];
  unsigned __int16 maxs[3];
};

struct XSurfaceCollisionNode
{
  XSurfaceCollisionAabb aabb;
  unsigned __int16 childBeginIndex;
  unsigned __int16 childCount;
};

struct XSurfaceCollisionLeaf
{
  unsigned __int16 triangleBeginIndex;
};

struct XSurfaceCollisionTree
{
  float trans[3];
  float scale[3];
  unsigned int nodeCount;
  XSurfaceCollisionNode *nodes;
  unsigned int leafCount;
  XSurfaceCollisionLeaf *leafs;
};

struct XRigidVertList
{
  unsigned __int16 boneOffset;
  unsigned __int16 vertCount;
  unsigned __int16 triOffset;
  unsigned __int16 triCount;
  XSurfaceCollisionTree *collisionTree;
};

struct XSurface
{
  char tileMode;
  bool deformed;
  unsigned __int16 vertCount;
  unsigned __int16 triCount;
  short _pad;
  unsigned __int16 (*triIndices)[3];                  //Count = triCount * 3 (groups of 3)
  XSurfaceVertexInfo vertexInfo;
  GfxPackedVertex * packedVerticies;
  IDirect3DVertexBuffer9 vertexBuffer;
  unsigned int vertListCount;
  XRigidVertList * rigidVertLists;
  IDirect3DIndexBuffer9 indexBuffer;
       char unknown[0x18];
};

struct ModelSurface
{
  char * name;
  XSurface * xSurficies;
  short xSurficiesCount; //This is a copy of the count, the actual count is loaded from the parent XModelStreamInfo
  short _pad;
       char unknown[0x18];
};

Modern Warfare 3

struct XSurfaceVertexInfo
{
  __int16 vertCount[4];
  unsigned __int16 *vertsBlend;

  /*
  Count... Ok, here we go...

   (((vertCount[2] << 2) + vertCount[2]) +
  ((vertCount[3] << 3) - vertCount[3]) +
  ((vertCount[1] << 1) + vertCount[1])
  + vertCount[0]) << 1*/
};

union GfxColor
{
  unsigned int packed;
  char array[4];
};

union PackedTexCoords
{
  unsigned int packed;
};

union PackedUnitVec
{
  unsigned int packed;
};

struct GfxPackedVertex
{
  float xyz[3];
  float binormalSign;
  GfxColor color;
  PackedTexCoords texCoord;
  PackedUnitVec normal;
  PackedUnitVec tangent;
};

struct XSurfaceCollisionAabb
{
  unsigned __int16 mins[3];
  unsigned __int16 maxs[3];
};

struct XSurfaceCollisionNode
{
  XSurfaceCollisionAabb aabb;
  unsigned __int16 childBeginIndex;
  unsigned __int16 childCount;
};

struct XSurfaceCollisionLeaf
{
  unsigned __int16 triangleBeginIndex;
};

struct XSurfaceCollisionTree
{
  float trans[3];
  float scale[3];
  unsigned int nodeCount;
  XSurfaceCollisionNode *nodes;
  unsigned int leafCount;
  XSurfaceCollisionLeaf *leafs;
};

struct XRigidVertList
{
  unsigned __int16 boneOffset;
  unsigned __int16 vertCount;
  unsigned __int16 triOffset;
  unsigned __int16 triCount;
  XSurfaceCollisionTree *collisionTree;
};

struct unknownUnion
{
  GfxPackedVertex * packedVerticies;
       char * unknown1;  //Size = ((vertCount << 1) + vertCount) << 3
       char * unknown2;  //Size = ((vertCount << 2) + vertCount) << 2
};

struct XSurface
{
  char tileMode;
  bool deformed;
  unsigned __int16 vertCount;
  unsigned __int16 triCount;
  short _padding;
       int unknown1;
  unsigned __int16 (*triIndices)[3];                  //Count = triCount * 3 (groups of 3)
  XSurfaceVertexInfo vertexInfo;
        unknownUnion verticies;
  IDirect3DVertexBuffer9 vertexBuffer;
  unsigned int vertListCount;
  XRigidVertList * rigidVertLists;
  IDirect3DIndexBuffer9 indexBuffer;
       char unknown2[0x18];
};

struct ModelSurface
{
  char * name;
  XSurface * xSurficies;
  short xSurficiesCount; //This is a copy of the count, the actual count is loaded from the parent XModelStreamInfo
  short _pad;
  char unknown[0x18];
};

Ghosts

union GfxColor
{
  unsigned int packed;
  char array[4];
};

union PackedTexCoords
{
  unsigned int packed;
};

union PackedUnitVec
{
  unsigned int packed;
};

struct GfxPackedVertex
{
  float xyz[3];
  float binormalSign;
  GfxColor color;
  PackedTexCoords texCoord;
  PackedUnitVec normal;
  PackedUnitVec tangent;
};

struct XSurfaceCollisionAabb
{
  unsigned __int16 mins[3];
  unsigned __int16 maxs[3];
};

struct XSurfaceCollisionNode
{
  XSurfaceCollisionAabb aabb;
  unsigned __int16 childBeginIndex;
  unsigned __int16 childCount;
};

struct XSurfaceCollisionLeaf
{
  unsigned __int16 triangleBeginIndex;
};

struct XSurfaceCollisionTree
{
  float trans[3];
  float scale[3];
  unsigned int nodeCount;
  XSurfaceCollisionNode *nodes;
  unsigned int leafCount;
  XSurfaceCollisionLeaf *leafs;
};

struct XRigidVertList
{
  unsigned __int16 boneOffset;
  unsigned __int16 vertCount;
  unsigned __int16 triOffset;
  unsigned __int16 triCount;
  XSurfaceCollisionTree *collisionTree;
};

union unknownUnion
{
  GfxPackedVertex * packedVerticies;
       char * unknown1;  //Size = vertCount << 5
       char * unknown2;  //Size = ((vertCount << 1) + vertCount) << 3
       char * unknown3;  //Size = ((vertCount << 1) + vertCount) << 3
       char * unknown4;  //Size = ((vertCount << 2) + vertCount) << 2
};

struct XSurface
{
  char tileMode;
  bool deformed;
  unsigned __int16 vertCount;
  byte vertListCount;
  unsigned __int16 triCount;
  __int16 vertCount[4];
       unknownUnion verticies;
       char * unknown2; //Size = ((vertCount << 1) + vertCount) << 1
  IDirect3DVertexBuffer9 vertexBuffer;
  IDirect3DIndexBuffer9 indexBuffer;
  XRigidVertList * rigidVertLists;
  unsigned __int16 *vertsBlend;
       char unknown3[0x20];
};

struct ModelSurface
{
  char * name;
  XSurface * xSurficies;
  short xSurficiesCount; //This is a copy of the count, the actual count is loaded from the parent XModelStreamInfo
  short unknownShort;
  char unknown[0x18];
};