//-----------------------------------------------------------------------------
// Torque Game Engine
// Copyright (C) GarageGames.com, Inc.
//-----------------------------------------------------------------------------

#include "ts/tsMesh.h"
#include "dgl/dgl.h"
#include "math/mMath.h"
#include "math/mathIO.h"
#include "ts/tsShape.h"
#include "console/console.h"
#include "ts/tsShapeInstance.h"
#include "sim/sceneObject.h"
#include "ts/tsSortedMesh.h"
#include "core/bitRender.h"
#include "collision/convex.h"
#include "core/frameAllocator.h"
#include "platform/profiler.h"

// Not worth the effort, much less the effort to comment, but if the draw types
// are consecutive use addition rather than a table to go from index to command value...
#if ((GL_TRIANGLES+1==GL_TRIANGLE_STRIP) && (GL_TRIANGLE_STRIP+1==GL_TRIANGLE_FAN))
   #define getDrawType(a) (GL_TRIANGLES+(a))
#else
   U32 drawTypes[] = { GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN };
   #define getDrawType(a) (drawTypes[a])
#endif

// structures used to share data between detail levels...
// used (and valid) during load only
Vector<Point3F*> TSMesh::smVertsList;
Vector<Point3F*> TSMesh::smNormsList;
Vector<U8*>      TSMesh::smEncodedNormsList;
Vector<Point2F*> TSMesh::smTVertsList;
Vector<bool>     TSMesh::smDataCopied;

Vector<Point3F>  TSMesh::smSaveVerts;
Vector<Point3F>  TSMesh::smSaveNorms;
Vector<Point2F>  TSMesh::smSaveTVerts;

Vector<MatrixF*> TSSkinMesh::smInitTransformList;
Vector<S32*>     TSSkinMesh::smVertexIndexList;
Vector<S32*>     TSSkinMesh::smBoneIndexList;
Vector<F32*>     TSSkinMesh::smWeightList;
Vector<S32*>     TSSkinMesh::smNodeIndexList;

Vector<Point3F> gNormalStore;

F32 TSMesh::overrideFadeVal = 1.0;

bool TSMesh::smUseTriangles = false; // convert all primitives to triangle lists on load
bool TSMesh::smUseOneStrip  = false; // join triangle strips into one long strip on load
S32  TSMesh::smMinStripSize = 1;     // smallest number of _faces_ allowed per strip (all else put in tri list)
bool TSMesh::smUseEncodedNormals = false;

// quick function to force object to face camera -- currently throws out roll :(
void forceFaceCamera()
{
   MatrixF mat;
   Point4F p;

   dglGetModelview(&mat);
   mat.getColumn(3,&p);
   mat.identity();
   mat.setColumn(3,p);
   dglLoadMatrix(&mat);
   if (TSShapeInstance::smRenderData.objectScale)
      glScalef(TSShapeInstance::smRenderData.objectScale->x,
               TSShapeInstance::smRenderData.objectScale->y,
               TSShapeInstance::smRenderData.objectScale->z);
}

void forceFaceCameraZAxis()
{
   MatrixF mat;
   dglGetModelview(&mat);
   Point3F z;
   mat.getColumn(2,&z); // this is where the z-axis goes, keep it here but reset x and y
   Point3F x,y;
   if (mFabs(z.y) < 0.99f)
   {
      // mCross(Point3F(0,1,0),tAxis,&x);
      x.set(z.z,0,-z.x);
      x.normalize();
      mCross(z,x,&y);
   }
   else
   {
      // mCross(z,Point3F(1,0,0),&y);
      y.set(0,z.z,-z.y);
      y.normalize();
      mCross(y,z,&x);
   }
   mat.setColumn(0,x);
   mat.setColumn(1,y);
   mat.setColumn(2,z);
   dglLoadMatrix(&mat);
   if (TSShapeInstance::smRenderData.objectScale)
      glScalef(TSShapeInstance::smRenderData.objectScale->x,TSShapeInstance::smRenderData.objectScale->y,TSShapeInstance::smRenderData.objectScale->z);
}

void TSMesh::saveMergeVerts()
{
   S32 startMerge = vertsPerFrame - mergeIndices.size();
   S32 j;
   for (j=0; j<mergeIndices.size(); j++)
   {
      smSaveVerts[j+mergeBufferStart]  = verts[j+startMerge];
      smSaveTVerts[j+mergeBufferStart] = tverts[j+startMerge];
   }
   F32 mult = TSShapeInstance::smRenderData.intraDetailLevel;
   for (j=0; j<mergeIndices.size(); j++)
   {
      verts[j+startMerge] *= mult;
      Point3F v = mergeIndices[j]<startMerge ? verts[mergeIndices[j]] : smSaveVerts[mergeIndices[j]-startMerge+mergeBufferStart];
      v *= 1.0f - mult;
      verts[j+startMerge] += v;

      tverts[j+startMerge] *= mult;
      Point2F tv = mergeIndices[j]<startMerge ? tverts[mergeIndices[j]] : smSaveTVerts[mergeIndices[j]-startMerge+mergeBufferStart];
      tv *= 1.0f - mult;
      tverts[j+startMerge] += tv;
   }
}

void TSMesh::restoreMergeVerts()
{
   S32 startMerge = vertsPerFrame - mergeIndices.size();
   for (S32 i=0; i<mergeIndices.size(); i++)
   {
      verts[i+startMerge] = smSaveVerts[i+mergeBufferStart];
      tverts[i+startMerge] = smSaveTVerts[i+mergeBufferStart];
   }
}

void TSMesh::saveMergeNormals()
{
   S32 startMerge = vertsPerFrame - mergeIndices.size();
   S32 j;
   smSaveNorms.setSize(mergeIndices.size());
   for (j=0; j<mergeIndices.size(); j++)
      smSaveNorms[j]  = norms[j+startMerge];
   F32 mult = TSShapeInstance::smRenderData.intraDetailLevel;
   for (j=0; j<mergeIndices.size(); j++)
   {
      norms[j+startMerge] *= mult;
      Point3F n = mergeIndices[j]<startMerge ? norms[mergeIndices[j]] : smSaveNorms[mergeIndices[j]-startMerge];
      n *= 1.0f - mult;
      norms[j+startMerge] += n;
      // norms[j+startMerge].normalize();
   }
}

void TSMesh::restoreMergeNormals()
{
   if (getFlags(UseEncodedNormals))
      return;

   S32 startMerge = vertsPerFrame - mergeIndices.size();
   for (S32 i=0; i<mergeIndices.size(); i++)
      norms[i+startMerge] = smSaveNorms[i];
}

//-----------------------------------------------------
// TSMesh render methods
//-----------------------------------------------------

void TSMesh::fillVB(S32 vb, S32 frame, S32 matFrame, TSMaterialList *materials)
{
   S32 firstVert  = vertsPerFrame * frame;
   S32 firstTVert = vertsPerFrame * matFrame;
   const Point3F *normals = getNormals(firstVert);

   // set up vertex arrays -- already enabled in TSShapeInstance::render
   glVertexPointer(3,GL_FLOAT,0,&verts[firstVert]);
   glNormalPointer(GL_FLOAT,0,normals);
   glTexCoordPointer(2,GL_FLOAT,0,&tverts[firstTVert]);

   TSDrawPrimitive &draw = primitives[0];

   AssertFatal(draw.matIndex & TSDrawPrimitive::Indexed,
               "TSMesh::render: rendering of non-indexed meshes no longer supported");

   // we do this to enable texturing -- if necessary
   if (((TSShapeInstance::smRenderData.materialIndex ^ draw.matIndex) &
       (TSDrawPrimitive::MaterialMask|TSDrawPrimitive::NoMaterial)) != 0)
      setMaterial(draw.matIndex,materials);

   glFillVertexBufferEXT(vb,0,vertsPerFrame);
}

void TSMesh::morphVB(S32 vb, S32 morph, S32 frame, S32 matFrame, TSMaterialList *materials)
{
   S32 firstVert  = vertsPerFrame * (frame+1) - morph;
   S32 firstTVert = vertsPerFrame * (matFrame+1) - morph;
   const Point3F *normals = getNormals(firstVert);

   saveMergeNormals(); // verts & tverts saved and restored on tsshapeinstance::setStatics

   // set up vertex arrays -- already enabled in TSShapeInstance::render
   glVertexPointer(3,GL_FLOAT,0,&verts[firstVert]);
   glNormalPointer(GL_FLOAT,0,normals);
   glTexCoordPointer(2,GL_FLOAT,0,&tverts[firstTVert]);

   TSDrawPrimitive &draw = primitives[0];

   AssertFatal(draw.matIndex & TSDrawPrimitive::Indexed,
               "TSMesh::render: rendering of non-indexed meshes no longer supported");

   // we do this to enable texturing -- if necessary
   if (((TSShapeInstance::smRenderData.materialIndex ^ draw.matIndex) &
       (TSDrawPrimitive::MaterialMask|TSDrawPrimitive::NoMaterial)) != 0)
      setMaterial(draw.matIndex,materials);

   glFillVertexBufferEXT(vb,0,morph);

   restoreMergeNormals();
}

void TSMesh::renderVB(S32 frame, S32 matFrame, TSMaterialList *materials)
{
   S32 firstVert  = vertsPerFrame * frame;
   S32 firstTVert = vertsPerFrame * matFrame;

   if (getFlags(Billboard))
   {
      if (getFlags(BillboardZAxis))
         forceFaceCameraZAxis();
      else
         forceFaceCamera();
   }

   const Point3F *normals = getNormals(firstVert);

   // lock...
   bool lockArrays = dglDoesSupportCompiledVertexArray();
   if (lockArrays)
      glLockArraysEXT(0,vertsPerFrame);

   for (S32 i=0; i<primitives.size(); i++)
   {
      PROFILE_START(TSShapeInstanceVBMat);
      TSDrawPrimitive &draw = primitives[i];

      AssertFatal(draw.matIndex & TSDrawPrimitive::Indexed,
                  "TSMesh::render: rendering of non-indexed meshes no longer supported");

      // material change?
      if (((TSShapeInstance::smRenderData.materialIndex ^ draw.matIndex) &
           (TSDrawPrimitive::MaterialMask|TSDrawPrimitive::NoMaterial)) != 0)
         setMaterial(draw.matIndex,materials);
      PROFILE_END();

      PROFILE_START(TSShapeInstanceDE);
      S32 drawType = getDrawType(draw.matIndex>>30);

      glDrawElements(drawType,draw.numElements,GL_UNSIGNED_SHORT,&indices[draw.start]);
      PROFILE_END();
   }

   // unlock...
   if (lockArrays)
      glUnlockArraysEXT();
}

void TSMesh::render(S32 frame, S32 matFrame, TSMaterialList * materials)
{
   if( vertsPerFrame <= 0 ) {
      return;
   }

   S32 firstVert  = vertsPerFrame * frame;
   S32 firstTVert = vertsPerFrame * matFrame;

   if (getFlags(Billboard))
   {
      if (getFlags(BillboardZAxis))
         forceFaceCameraZAxis();
      else
         forceFaceCamera();
   }

   const Point3F * normals = getNormals(firstVert);
   saveMergeNormals(); // verts & tverts saved and restored on tsshapeinstance::setStatics

   // set up vertex arrays -- already enabled in TSShapeInstance::render
   glVertexPointer(3,GL_FLOAT,0,&verts[firstVert]);
   glNormalPointer(GL_FLOAT,0,normals);
   glTexCoordPointer(2,GL_FLOAT,0,&tverts[firstTVert]);
   if (TSShapeInstance::smRenderData.detailMapMethod == TSShapeInstance::DETAIL_MAP_MULTI_1 ||
       TSShapeInstance::smRenderData.detailMapMethod == TSShapeInstance::DETAIL_MAP_MULTI_2)
   {
      glClientActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.detailMapTE);
      glTexCoordPointer(2,GL_FLOAT,0,&tverts[firstTVert]);
      glClientActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE);
   }

   // lock...
   bool lockArrays = dglDoesSupportCompiledVertexArray();
   if (lockArrays)
      glLockArraysEXT(0,vertsPerFrame);

   for (S32 i=0; i<primitives.size(); i++)
   {
      TSDrawPrimitive & draw = primitives[i];
      AssertFatal(draw.matIndex & TSDrawPrimitive::Indexed,
                  "TSMesh::render: rendering of non-indexed meshes no longer supported");

      // material change?
      if ( ((TSShapeInstance::smRenderData.materialIndex ^ draw.matIndex) &
            (TSDrawPrimitive::MaterialMask|TSDrawPrimitive::NoMaterial)) != 0)
         setMaterial(draw.matIndex,materials);

      S32 drawType = getDrawType(draw.matIndex>>30);

      glDrawElements(drawType,draw.numElements,GL_UNSIGNED_SHORT,&indices[draw.start]);
   }

   // unlock...
   if (lockArrays)
      glUnlockArraysEXT();

   restoreMergeNormals();
}

const Point3F * TSMesh::getNormals(S32 firstVert)
{
   if (getFlags(UseEncodedNormals))
   {
      gNormalStore.setSize(vertsPerFrame);
      for (S32 i=0; i<encodedNorms.size(); i++)
         gNormalStore[i]=decodeNormal(encodedNorms[i+firstVert]);
      return gNormalStore.address();
   }
   return &norms[firstVert];
}

void TSMesh::initMaterials()
{
   S32 & emapMethod = TSShapeInstance::smRenderData.environmentMapMethod;
   S32 & dmapMethod = TSShapeInstance::smRenderData.detailMapMethod;
   S32 & fogMethod  = TSShapeInstance::smRenderData.fogMethod;
   S32 & dmapTE     = TSShapeInstance::smRenderData.detailMapTE;
   S32 & emapTE     = TSShapeInstance::smRenderData.environmentMapTE;
   S32 & baseTE     = TSShapeInstance::smRenderData.baseTE;
   S32 & fogTE      = TSShapeInstance::smRenderData.fogTE;
   TSShapeInstance::smRenderData.detailTextureScale = 1.0f;
   TSShapeInstance::smRenderData.fadeSet = false;
   TSShapeInstance::smRenderData.textureMatrixPushed = false;

   // initialize various sources of vertex alpha
   TSShapeInstance::smRenderData.vertexAlpha.init();
   TSShapeInstance::smRenderData.vertexAlpha.always = TSShapeInstance::smRenderData.alwaysAlphaValue;

   // -------------------------------------------------

   if (dmapMethod == TSShapeInstance::DETAIL_MAP_MULTI_1)
   {
      glClientActiveTextureARB(GL_TEXTURE0_ARB + dmapTE);
      glEnableClientState(GL_TEXTURE_COORD_ARRAY);
      glClientActiveTextureARB(GL_TEXTURE0_ARB + baseTE);

      // switch to detail map texture unit
      glActiveTextureARB(GL_TEXTURE0_ARB + dmapTE);

      glEnable(GL_TEXTURE_2D);

      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_MODULATE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_RGB,GL_TEXTURE);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_REPLACE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);
      glTexEnvf(GL_TEXTURE_ENV,GL_RGB_SCALE,2.0f);

      // switch to base texture unit
      glActiveTextureARB(GL_TEXTURE0_ARB + baseTE);
   }
   else if (dmapMethod == TSShapeInstance::DETAIL_MAP_MULTI_2)
   {
      glClientActiveTextureARB(GL_TEXTURE0_ARB + dmapTE);
      glEnableClientState(GL_TEXTURE_COORD_ARRAY);
      glClientActiveTextureARB(GL_TEXTURE0_ARB + baseTE);

      // switch to detail map texture unit
      glActiveTextureARB(GL_TEXTURE0_ARB + dmapTE);

      glEnable(GL_TEXTURE_2D);

      // following used to "alpha" out detail texture
      F32 f = (1.0f-TSShapeInstance::smRenderData.detailMapAlpha)*0.5f;
      glTexEnvfv(GL_TEXTURE_ENV,GL_TEXTURE_ENV_COLOR,Point4F(f,f,f,1.0f-f));

      // first unit computes "alpha-ed" detail texture
      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_INTERPOLATE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_CONSTANT);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_ALPHA);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_RGB,GL_CONSTANT);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE2_RGB,GL_TEXTURE);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND2_RGB,GL_SRC_COLOR);
      // alpha:  don't need it...
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_REPLACE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_CONSTANT); // don't need alpha, maybe this'll be cheaper than alternatives
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);

      // second unit applies detail texture to base texture
      AssertFatal(dmapTE+1==baseTE,"TSShapeInstance::setupTexturing:  assertion failed (1)");
      glActiveTextureARB(GL_TEXTURE0_ARB+dmapTE+1);
      glEnable(GL_TEXTURE_2D);
      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_MODULATE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_RGB,GL_TEXTURE);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_RGB,GL_SRC_COLOR);

      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_REPLACE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_TEXTURE);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);
      glTexEnvf(GL_TEXTURE_ENV,GL_RGB_SCALE,2.0f);

      // third unit will apply lighting...
      // we need to use the combine extension...we modulate by primary color rather than fragment color
      glActiveTextureARB(GL_TEXTURE0_ARB+dmapTE+2);
      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);

      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_MODULATE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_RGB,GL_PRIMARY_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_RGB,GL_SRC_COLOR);

      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_MODULATE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_ALPHA,GL_PRIMARY_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_ALPHA,GL_SRC_ALPHA);

      // switch to base texture unit
      glActiveTextureARB(GL_TEXTURE0_ARB + baseTE);
   }

   if (emapMethod == TSShapeInstance::ENVIRONMENT_MAP_MULTI_1)
   {
      // reflectance map == alpha of texture map (always preferred if no translucency)

      // ---------------------------------
      // set up second texure unit (TE #1)
      glActiveTextureARB(GL_TEXTURE0_ARB + emapTE);
      glEnable(GL_TEXTURE_2D);
      glTexGeni(GL_S,GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
      glTexGeni(GL_T,GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
      glEnable(GL_TEXTURE_GEN_S);
      glEnable(GL_TEXTURE_GEN_T);
      // use combine extension -- RGB:   interpolate between previous and current texture on previous alpha
      //                          Alpha: previous alpha
      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_INTERPOLATE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_TEXTURE);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_RGB,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE2_RGB,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND2_RGB,GL_SRC_ALPHA);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_REPLACE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);

      // set the environment map
      glBindTexture(GL_TEXTURE_2D, TSShapeInstance::smRenderData.environmentMapGLName);

      TSShapeInstance::smRenderData.vertexAlpha.emap = TSShapeInstance::smRenderData.environmentMapAlpha;

      // switch to base texture unit
      glActiveTextureARB(GL_TEXTURE0_ARB + baseTE);
   }
   else if (emapMethod == TSShapeInstance::ENVIRONMENT_MAP_MULTI_3)
   {
      // ---------------------------------
      // set up first texure unit (TE #1)
      // Note: TE #1 bound to refelectance
      //       map in tsmesh
      glActiveTextureARB(GL_TEXTURE0_ARB + emapTE);
      glEnable(GL_TEXTURE_2D);
      // use combine extension -- RGB:   previous
      //                          Alpha: modulate previous with primary color
      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_REPLACE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_MODULATE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_ALPHA,GL_PRIMARY_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_ALPHA,GL_SRC_ALPHA);

      // ---------------------------------
      // set up second texure unit (TE #2)
      glActiveTextureARB(GL_TEXTURE0_ARB + emapTE + 1);
      glEnable(GL_TEXTURE_2D);
      glTexGeni(GL_S,GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
      glTexGeni(GL_T,GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
      glEnable(GL_TEXTURE_GEN_S);
      glEnable(GL_TEXTURE_GEN_T);
      // use combine extension -- RGB:   interpolate between previous and current texture on previous alpha
      //                          Alpha: previous alpha
      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_INTERPOLATE); // Interpolate
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_TEXTURE);         // texture.color
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_RGB,GL_PREVIOUS);    // previous.color
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE2_RGB,GL_PREVIOUS);    // by previous.srcalpha
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND2_RGB,GL_SRC_ALPHA);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_REPLACE);       // alpha replace
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_PREVIOUS);  // previous.srcalpha
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);
      // set the environment map
      glBindTexture(GL_TEXTURE_2D, TSShapeInstance::smRenderData.environmentMapGLName);

      // ---------------------------------
      // set up third texure unit (TE #3)
      // Note: TE #3 bound to shape texture
      //       in tsmesh (only uses alpha)
      glActiveTextureARB(GL_TEXTURE0_ARB + emapTE);
      glEnable(GL_TEXTURE_2D);
      // use combine extension -- RGB:   previous RGB
      //                          Alpha: interpolate between 1 and current texture using previous alpha
      //                                 = previous.alpha + (1-previous.alpha) * current.alpha
      //                                 = 1 - (1-previous.alpha) * (1-current.alpha)
      //                                 = correct alpha value of texture w/ emap pre-blended
      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_REPLACE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_INTERPOLATE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_CONSTANT);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);
      glTexEnvfv(GL_TEXTURE_ENV,GL_TEXTURE_ENV_COLOR,Point4F(1.0f,1.0f,1.0f,1.0f));
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_ALPHA,GL_TEXTURE);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_ALPHA,GL_SRC_ALPHA);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE2_ALPHA,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND2_ALPHA,GL_SRC_ALPHA);

      // set vertex color alpha
      TSShapeInstance::smRenderData.vertexAlpha.emap = TSShapeInstance::smRenderData.environmentMapAlpha;

      // switch to base texture unit
      glActiveTextureARB(GL_TEXTURE0_ARB + baseTE);
   }

   if (fogMethod == TSShapeInstance::FOG_MULTI_1)
   {
      // ---------------------------------
      // set up fog texure unit
      glActiveTextureARB(GL_TEXTURE0_ARB + fogTE);
      glEnable(GL_TEXTURE_2D);

      glTexEnvfv(GL_TEXTURE_ENV,GL_TEXTURE_ENV_COLOR,TSShapeInstance::smRenderData.fogColor);
      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_INTERPOLATE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_TEXTURE);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_RGB,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_RGB,GL_SRC_COLOR);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND2_RGB,GL_SRC_ALPHA);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_REPLACE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_PREVIOUS);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);

      // the ATI Rage 128 needs a forthcoming driver to do do constant alpha blend
      if (TSShapeInstance::smRenderData.fogTexture)
         glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE2_RGB,GL_TEXTURE);
      else
         glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE2_RGB,GL_CONSTANT);

      // bind constant fog bitmap
      glBindTexture(GL_TEXTURE_2D, TSShapeInstance::smRenderData.fogHandle->getGLName());
      glActiveTextureARB(GL_TEXTURE0_ARB + baseTE);
   }
   else if (fogMethod == TSShapeInstance::FOG_MULTI_1_TEXGEN)
   {
      // set up fog texure unit
      glActiveTextureARB(GL_TEXTURE0_ARB + fogTE);
      glEnable(GL_TEXTURE_2D);
      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_DECAL);

      // set up fog map
      glBindTexture(GL_TEXTURE_2D, TSShapeInstance::smRenderData.fogMapHandle->getGLName());

      // set up texgen equations
      glTexGeni(GL_S,GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
      glTexGeni(GL_T,GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
      glEnable(GL_TEXTURE_GEN_S);
      glEnable(GL_TEXTURE_GEN_T);
      glTexGenfv(GL_S,GL_OBJECT_PLANE,&TSShapeInstance::smRenderData.fogTexGenS.x);
      glTexGenfv(GL_T,GL_OBJECT_PLANE,&TSShapeInstance::smRenderData.fogTexGenT.x);

      // return to base TE
      glActiveTextureARB(GL_TEXTURE0_ARB + baseTE);
   }

   //----------------------------------
   // set up texture enviroment for base texture

   TSShapeInstance::smRenderData.materialFlags = TSMaterialList::S_Wrap | TSMaterialList::T_Wrap;
   TSShapeInstance::smRenderData.materialIndex = TSDrawPrimitive::NoMaterial;

   // draw one-sided...
   glEnable(GL_CULL_FACE);
   glFrontFace(GL_CW);

   // enable vertex arrays...
   glEnableClientState(GL_VERTEX_ARRAY);
   glEnableClientState(GL_NORMAL_ARRAY);
   glEnableClientState(GL_TEXTURE_COORD_ARRAY);

   // when blending we modulate and draw using src_alpha, 1-src_alpha...
   glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

   // we modulate in order to apply lighting...
   glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);

   // but we don't blend by default...
   glDisable(GL_BLEND);
   glDepthMask(GL_TRUE);

   // lighting?
   TSShapeInstance::smRenderData.lightingOn = glIsEnabled(GL_LIGHTING)!=0;

   // set vertex color (if emapping, vertexColor.w holds emapAlpha)
   TSShapeInstance::smRenderData.vertexAlpha.set();
   Point4F vertexColor(1,1,1,TSShapeInstance::smRenderData.vertexAlpha.current);
   glColor4fv(vertexColor);
   glMaterialfv(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE,vertexColor);

   // this should be off by default, but we'll end up turning it on asap...
   glDisable(GL_TEXTURE_2D);
}

void TSMesh::resetMaterials()
{
   // restore gl state changes made for dmap
   if (TSShapeInstance::smRenderData.detailMapMethod==TSShapeInstance::DETAIL_MAP_MULTI_1 ||
       TSShapeInstance::smRenderData.detailMapMethod==TSShapeInstance::DETAIL_MAP_MULTI_2)
   {
      // set detail maps texture unit
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.detailMapTE);

      glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
      glDisable(GL_TEXTURE_2D);

      // may have changed texture matrix of one of detail-texture texture-environment
      if (mFabs(TSShapeInstance::smRenderData.detailTextureScale-1.0f) > 0.001f)
      {
         glMatrixMode(GL_TEXTURE);
         glLoadIdentity();
         glMatrixMode(GL_MODELVIEW);
      }

      if (TSShapeInstance::smRenderData.detailMapMethod==TSShapeInstance::DETAIL_MAP_MULTI_2)
      {
         glTexEnvfv(GL_TEXTURE_ENV,GL_TEXTURE_ENV_COLOR,Point4F(0,0,0,0));
         glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.detailMapTE+1);
         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
         glDisable(GL_TEXTURE_2D);
         glTexEnvf(GL_TEXTURE_ENV,GL_RGB_SCALE,1.0f);
      }
      else
         glTexEnvf(GL_TEXTURE_ENV,GL_RGB_SCALE,1.0f);

      // disable tcoord's on detail map's TE
      glClientActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.detailMapTE);
      glDisableClientState(GL_TEXTURE_COORD_ARRAY);
      glClientActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE);
   }

   // restore gl state changes made for emap
   if (TSShapeInstance::smRenderData.environmentMapMethod==TSShapeInstance::ENVIRONMENT_MAP_MULTI_1)
   {
      // set second texure unit (TE #1)
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.environmentMapTE);
      glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
      glDisable(GL_TEXTURE_2D);
      glDisable(GL_TEXTURE_GEN_S);
      glDisable(GL_TEXTURE_GEN_T);
   }
   else if (TSShapeInstance::smRenderData.environmentMapMethod==TSShapeInstance::ENVIRONMENT_MAP_MULTI_3)
   {
      // set second texure unit (TE #1)
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.environmentMapTE);
      glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
      glDisable(GL_TEXTURE_2D);

      // set third texure unit (TE #2)
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.environmentMapTE + 1);
      glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
      glDisable(GL_TEXTURE_2D);
      glDisable(GL_TEXTURE_GEN_S);
      glDisable(GL_TEXTURE_GEN_T);

      // set fourth texure unit (TE #3)
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.environmentMapTE + 2);
      glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
      glDisable(GL_TEXTURE_2D);
   }

   if (TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_MULTI_1 || TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_MULTI_1_TEXGEN)
   {
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.fogTE);
      glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
      glDisable(GL_TEXTURE_GEN_S);
      glDisable(GL_TEXTURE_GEN_T);
      glDisable(GL_TEXTURE_2D);
   }

   // restore gl state changes made for base texture
   if (dglDoesSupportARBMultitexture())
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE);

   glDisableClientState(GL_VERTEX_ARRAY);
   glDisableClientState(GL_NORMAL_ARRAY);
   glDisableClientState(GL_TEXTURE_COORD_ARRAY);

   glDisable(GL_TEXTURE_2D);
   glDisable(GL_BLEND);
   glDepthMask(GL_TRUE);

   // don't cull by default...
   glDisable(GL_CULL_FACE);

   // if lights were on when we started, make sure they're on when we leave
   if (TSShapeInstance::smRenderData.lightingOn && !glIsEnabled(GL_LIGHTING))
      glEnable(GL_LIGHTING);

   // baseTE != 0?
   if (TSShapeInstance::smRenderData.baseTE!=0)
   {
      glActiveTextureARB(GL_TEXTURE0_ARB);
      glClientActiveTextureARB(GL_TEXTURE0_ARB);
   }

   // restore cloak shifting
   if (TSShapeInstance::smRenderData.textureMatrixPushed)
   {
      glMatrixMode(GL_TEXTURE);
      glPopMatrix();
      glMatrixMode(GL_MODELVIEW);
      TSShapeInstance::smRenderData.textureMatrixPushed = false;
   }
}

// set up materials for mesh rendering
// keeps track of flags via TSShapeInstance::smRenderData.materialFlags and only changes what needs to be changed
// keeps track of material index via TSShapeInstance::smRenderData.materialIndex
void TSMesh::setMaterial(S32 matIndex, TSMaterialList* materials)
{
   if ((matIndex|TSShapeInstance::smRenderData.materialIndex) & TSDrawPrimitive::NoMaterial)
   {
      if (matIndex & TSDrawPrimitive::NoMaterial)
      {
         glDisable(GL_TEXTURE_2D);
         glDisable(GL_BLEND);
         glDepthMask(GL_TRUE);
         TSShapeInstance::smRenderData.materialIndex = matIndex;
         TSShapeInstance::smRenderData.materialFlags &= ~TSMaterialList::Translucent;
         return;
      }
      glEnable(GL_TEXTURE_2D);
   }

   matIndex &= TSDrawPrimitive::MaterialMask;

   U32 flags     = materials->getFlags(matIndex);
   U32 bareFlags = flags;
   if (TSShapeInstance::smRenderData.alwaysAlpha || TSShapeInstance::smRenderData.fadeSet)
      flags |= TSMaterialList::Translucent;
   U32 deltaFlags = flags ^ TSShapeInstance::smRenderData.materialFlags;
   if (TSShapeInstance::smRenderData.environmentMapMethod!=TSShapeInstance::ENVIRONMENT_MAP_MULTI_1)
      deltaFlags &= ~TSMaterialList::NeverEnvMap;

   // update flags and material index...
   TSShapeInstance::smRenderData.materialFlags = flags;
   TSShapeInstance::smRenderData.materialIndex = matIndex;

   if (TSShapeInstance::smRenderData.useOverride == false || bareFlags & TSMaterialList::Translucent)
   {
      TextureHandle & tex = materials->getMaterial(matIndex);
      glBindTexture(GL_TEXTURE_2D, tex.getGLName());
   }
   else
      glBindTexture(GL_TEXTURE_2D, TSShapeInstance::smRenderData.override.getGLName());

   // anything change...?
   if (deltaFlags)
   {
      if (deltaFlags & TSMaterialList::NeverEnvMap && !TSShapeInstance::smRenderData.useOverride )
      {
         glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.environmentMapTE);
         if (bareFlags & TSMaterialList::NeverEnvMap)
            glDisable(GL_TEXTURE_2D);
         else
            glEnable(GL_TEXTURE_2D);
         glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE);
      }
      if (flags & TSMaterialList::Translucent)
      {
         if (TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_TWO_PASS || TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_TWO_PASS_TEXGEN)
         {
            TSShapeInstance::smRenderData.vertexAlpha.fog = 1.0f - TSShapeInstance::smRenderData.fogColor.w;
         }
         else if ((TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_MULTI_1 ||
                  TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_MULTI_1_TEXGEN) &&
                  flags & (TSMaterialList::Additive|TSMaterialList::Subtractive))
         {
            glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.fogTE);
            glDisable(GL_TEXTURE_2D);
            glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE);
            TSShapeInstance::smRenderData.vertexAlpha.fog = 1.0f - TSShapeInstance::smRenderData.fogColor.w;
         }
         glEnable(GL_BLEND);
         glDepthMask(GL_FALSE);
      }
      else
      {
         if (TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_TWO_PASS || TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_TWO_PASS_TEXGEN)
         {
            TSShapeInstance::smRenderData.vertexAlpha.fog = 1.0f;
         }
         else if ((TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_MULTI_1 ||
                  TSShapeInstance::smRenderData.fogMethod == TSShapeInstance::FOG_MULTI_1_TEXGEN) &&
                  flags & (TSMaterialList::Additive|TSMaterialList::Subtractive))
         {
            glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.fogTE);
            glEnable(GL_TEXTURE_2D);
            glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE);
            TSShapeInstance::smRenderData.vertexAlpha.fog = 1.0f;
         }
         glDisable(GL_BLEND);
         glDepthMask(GL_TRUE);
      }
      if (deltaFlags & (TSMaterialList::Additive|TSMaterialList::Subtractive))
      {
         if (flags & TSMaterialList::Additive)
            glBlendFunc(GL_SRC_ALPHA, GL_ONE);
         else if (flags & TSMaterialList::Subtractive)
            glBlendFunc(GL_ZERO,GL_ONE_MINUS_SRC_COLOR);
         else
            glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
      }
      if (deltaFlags & TSMaterialList::SelfIlluminating)
      {
         if (TSShapeInstance::smRenderData.detailMapMethod==TSShapeInstance::DETAIL_MAP_MULTI_2)
         {
            // special case:  lighting done on different TE than texture...
            glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE + 1);
            if (flags & TSMaterialList::SelfIlluminating)
            {
               // modulate...
               glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);
            }
            else
            {
               // we need to use the combine extension...we modulate by primary color rather than fragment color
               glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
               glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_RGB,GL_MODULATE);
               glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_RGB,GL_PREVIOUS);
               glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_RGB,GL_SRC_COLOR);
               glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_RGB,GL_PRIMARY_COLOR);
               glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_RGB,GL_SRC_COLOR);
               glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_MODULATE);
               glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_PREVIOUS);
               glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);
               glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE1_ALPHA,GL_PRIMARY_COLOR);
               glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND1_ALPHA,GL_SRC_ALPHA);
            }
            glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE);
         }
         // turn off lights if self-illuminating (or back on if not)
         if (flags & TSMaterialList::SelfIlluminating || !TSShapeInstance::smRenderData.lightingOn)
            glDisable(GL_LIGHTING);
         else
            glEnable(GL_LIGHTING);
      }
   }

   // gotta set these every time since present value depends on texture not gl state
   glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,flags & TSMaterialList::S_Wrap ? GL_REPEAT : GL_CLAMP);
   glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,flags & TSMaterialList::T_Wrap ? GL_REPEAT : GL_CLAMP);

   // emap texture...
   if (TSShapeInstance::smRenderData.environmentMapMethod==TSShapeInstance::ENVIRONMENT_MAP_MULTI_3)
   {
      // set emap's texture unit...
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.environmentMapTE + 2);

      if (TSShapeInstance::smRenderData.useOverride == false || flags & TSMaterialList::Translucent)
      {
         TextureHandle & tex = materials->getMaterial(matIndex);
         glBindTexture(GL_TEXTURE_2D, tex.getGLName());
      }
      else
         glBindTexture(GL_TEXTURE_2D, TSShapeInstance::smRenderData.override.getGLName());
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.environmentMapTE);
      glBindTexture(GL_TEXTURE_2D, materials->getReflectionMap(matIndex)->getGLName());

      // set default texture unit...
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE);
   }

   // dmap texture...
   if (TSShapeInstance::smRenderData.detailMapMethod==TSShapeInstance::DETAIL_MAP_MULTI_1 ||
       TSShapeInstance::smRenderData.detailMapMethod==TSShapeInstance::DETAIL_MAP_MULTI_2)
   {
      // set detail map's texture unit...
      glActiveTextureARB(GL_TEXTURE0_ARB+TSShapeInstance::smRenderData.detailMapTE);

      TextureHandle * detailMap = materials->getDetailMap(matIndex);
      if (detailMap)
      {
         glEnable(GL_TEXTURE_2D);
         glBindTexture(GL_TEXTURE_2D,detailMap->getGLName());

         // has texture scale changed?
         F32 tscale = materials->getDetailMapScale(matIndex);
         if (mFabs(tscale-TSShapeInstance::smRenderData.detailTextureScale) > 0.001f)
         {
            // yes, update scale
            TSShapeInstance::smRenderData.detailTextureScale = tscale;
            glMatrixMode(GL_TEXTURE);
            MatrixF scaleMat;
            scaleMat.identity();
            for (S32 i=0; i<15; i++)
               ((F32*)scaleMat)[i] *= tscale;
            dglLoadMatrix(&scaleMat);
            glMatrixMode(GL_MODELVIEW);
         }
      }
      else
         glDisable(GL_TEXTURE_2D);

      // set default texture unit...
      glActiveTextureARB(GL_TEXTURE0_ARB + TSShapeInstance::smRenderData.baseTE);
   }

   // translucent materials shouldn't get cloak shifting
   // 1: pushed -> pushed
   // 2: pushed -> not pushed
   // 3: not pushed -> pushed
   // 4: not pushed -> not pushed
   if (TSShapeInstance::smRenderData.textureMatrixPushed)
   {
      if (TSShapeInstance::smRenderData.useOverride && bareFlags & TSMaterialList::Translucent)
      {
         // Leave it alone
      }
      else
      {
         // Pop it off
         glMatrixMode(GL_TEXTURE);
         glPopMatrix();
         glMatrixMode(GL_MODELVIEW);
         TSShapeInstance::smRenderData.textureMatrixPushed = false;
      }
   }
   else
   {
      if (TSShapeInstance::smRenderData.useOverride && bareFlags & TSMaterialList::Translucent)
      {
         // Push it up
         glMatrixMode(GL_TEXTURE);
         glPushMatrix();
         glLoadIdentity();
         glMatrixMode(GL_MODELVIEW);
         TSShapeInstance::smRenderData.textureMatrixPushed = true;
      }
      else
      {
         // leave it alone
      }
   }

   // handle environment map
   if (flags & TSMaterialList::NeverEnvMap)
      TSShapeInstance::smRenderData.vertexAlpha.emap = 1.0f;
   else
      TSShapeInstance::smRenderData.vertexAlpha.emap = TSShapeInstance::smRenderData.environmentMapAlpha * materials->getReflectionAmount(matIndex);
   // handle vertex alpha
   if (TSShapeInstance::smRenderData.vertexAlpha.set())
   {
      Point4F v(1,1,1,TSShapeInstance::smRenderData.vertexAlpha.current);
      glColor4fv(v);
      glMaterialfv(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE,v);
   }

   // set up fade
   if( overrideFadeVal < 1.0f && dglDoesSupportTextureEnvCombine() )
   {
      S32 & emapTE     = TSShapeInstance::smRenderData.environmentMapTE;
      S32 & baseTE     = TSShapeInstance::smRenderData.baseTE;

      if( TSShapeInstance::smRenderData.environmentMapMethod == TSShapeInstance::ENVIRONMENT_MAP_MULTI_1 )
      {
         glActiveTextureARB(GL_TEXTURE0_ARB + emapTE);
         glDisable(GL_TEXTURE_2D);
      }

      glActiveTextureARB(GL_TEXTURE0_ARB + baseTE);

      glEnable( GL_BLEND );

      if( TSShapeInstance::smRenderData.materialFlags & TSMaterialList::Translucent )
      {
         glBlendFunc( GL_SRC_ALPHA, GL_ONE );
      }
      else
      {
         glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
      }


      ColorF curColor;
      glGetFloatv( GL_FOG_COLOR, (GLfloat*)&curColor );
      curColor.alpha = overrideFadeVal;
      glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, curColor);

      glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_COMBINE);
      glTexEnvi(GL_TEXTURE_ENV,GL_COMBINE_ALPHA,GL_REPLACE);
      glTexEnvi(GL_TEXTURE_ENV,GL_SOURCE0_ALPHA,GL_CONSTANT);
      glTexEnvi(GL_TEXTURE_ENV,GL_OPERAND0_ALPHA,GL_SRC_ALPHA);


   }
}

void TSMesh::setFade(F32 fadeValue)
{
   TSShapeInstance::smRenderData.vertexAlpha.vis = fadeValue;
   if (TSShapeInstance::smRenderData.vertexAlpha.set())
   {
      Point4F v(1,1,1,TSShapeInstance::smRenderData.vertexAlpha.current);
      glColor4fv(v);
      glMaterialfv(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE,v);
   }
   TSShapeInstance::smRenderData.fadeSet = true;
}

void TSMesh::clearFade()
{
   setFade(1.0f);
   TSShapeInstance::smRenderData.fadeSet = false;
}

//-----------------------------------------------------
// TSMesh render environment map (2-pass) methods
//-----------------------------------------------------

void TSMesh::renderEnvironmentMap(S32 frame, S32 matFrame, TSMaterialList * materials)
{
   matFrame;

   // most gl states assumed to be all set up...
   // if we're here, then we're drawing environment map in two passes...

   S32 firstVert  = vertsPerFrame * frame;

   // set up vertex arrays -- already enabled in TSShapeInstance::render
   glVertexPointer(3,GL_FLOAT,0,&verts[firstVert]);
   glNormalPointer(GL_FLOAT,0,&norms[firstVert]);

   // lock...
   bool lockArrays = dglDoesSupportCompiledVertexArray();
   if (lockArrays)
      glLockArraysEXT(0,vertsPerFrame);

   S32 matIndex = -1;

   for (S32 i=0; i<primitives.size(); i++)
   {
      TSDrawPrimitive & draw = primitives[i];
      AssertFatal(draw.matIndex & TSDrawPrimitive::Indexed,"TSMesh::render: rendering of non-indexed meshes no longer supported");

      if ( (matIndex ^ draw.matIndex) & (TSDrawPrimitive::MaterialMask|TSDrawPrimitive::NoMaterial))
      {
         // material change
         matIndex = draw.matIndex & (TSDrawPrimitive::MaterialMask|TSDrawPrimitive::NoMaterial);

         if (matIndex & TSDrawPrimitive::NoMaterial)
            // no material...
            continue;
         else
         {
            if (materials->getFlags(matIndex) & TSMaterialList::NeverEnvMap)
               continue;
            TSShapeInstance::smRenderData.vertexAlpha.emap =
               TSShapeInstance::smRenderData.environmentMapAlpha * materials->getReflectionAmount(matIndex);
            glBindTexture(GL_TEXTURE_2D, materials->getReflectionMap(matIndex)->getGLName());
            if (TSShapeInstance::smRenderData.vertexAlpha.set())
            {
               Point4F v(1,1,1,TSShapeInstance::smRenderData.vertexAlpha.current);
               glColor4fv(v);
               glMaterialfv(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE,v);
            }
         }
      }
      glDrawElements(getDrawType(draw.matIndex>>30),draw.numElements,GL_UNSIGNED_SHORT,&indices[draw.start]);
   }

   // unlock...
   if (lockArrays)
      glUnlockArraysEXT();
}

void TSMesh::initEnvironmentMapMaterials()
{
   // set up gl environment

   // TE0
   glActiveTextureARB(GL_TEXTURE0_ARB);

   glEnable(GL_TEXTURE_2D);
   glEnable(GL_CULL_FACE);
   glEnable(GL_BLEND);
   glDepthMask(GL_TRUE);
   glFrontFace(GL_CW);
   glEnableClientState(GL_VERTEX_ARRAY);
   glEnableClientState(GL_NORMAL_ARRAY);
   glEnableClientState(GL_TEXTURE_COORD_ARRAY);
   glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
   glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);

   // TE1
   glActiveTextureARB(GL_TEXTURE1_ARB);

   glEnable(GL_TEXTURE_2D);
   glTexGeni(GL_S,GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
   glTexGeni(GL_T,GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
   glEnable(GL_TEXTURE_GEN_S);
   glEnable(GL_TEXTURE_GEN_T);
   glBindTexture(GL_TEXTURE_2D, TSShapeInstance::smRenderData.environmentMapGLName);
   glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_REPLACE); // should leave alpha alone since emap has no alpha

   // TE0 again
   glActiveTextureARB(GL_TEXTURE0_ARB);

   TSShapeInstance::smRenderData.vertexAlpha.init();
   TSShapeInstance::smRenderData.vertexAlpha.emap = TSShapeInstance::smRenderData.environmentMapAlpha;
   TSShapeInstance::smRenderData.vertexAlpha.always = TSShapeInstance::smRenderData.alwaysAlphaValue;
   TSShapeInstance::smRenderData.vertexAlpha.set();
   glColor4fv(Point4F(1.0f,1.0f,1.0f,TSShapeInstance::smRenderData.vertexAlpha.current));
}

void TSMesh::resetEnvironmentMapMaterials()
{
   // restore texture environmnet 0
   glDisable(GL_TEXTURE_2D);
   glDisable(GL_BLEND);
   glDepthMask(GL_TRUE);
   glDisable(GL_CULL_FACE);
   glDisableClientState(GL_VERTEX_ARRAY);
   glDisableClientState(GL_NORMAL_ARRAY);
   glDisableClientState(GL_TEXTURE_COORD_ARRAY);

   // restore texture environment 1
   glActiveTextureARB(GL_TEXTURE1_ARB);
   glDisable(GL_TEXTURE_GEN_S);
   glDisable(GL_TEXTURE_GEN_T);
   glDisable(GL_TEXTURE_2D);

   glActiveTextureARB(GL_TEXTURE0_ARB);
}

//-----------------------------------------------------
// TSMesh render detail map (2 pass) methods
//-----------------------------------------------------

void TSMesh::renderDetailMap(S32 frame, S32 matFrame, TSMaterialList * materials)
{
   // most gl states assumed to be all set up...
   // if we're here, then we're drawing detail map in two passes...

   S32 firstVert  = vertsPerFrame * frame;
   S32 firstTVert = vertsPerFrame * matFrame;

   // set up vertex arrays -- already enabled in TSShapeInstance::render
   glVertexPointer(3,GL_FLOAT,0,&verts[firstVert]);
   glNormalPointer(GL_FLOAT,0,&norms[firstVert]);
   glTexCoordPointer(2,GL_FLOAT,0,&tverts[firstTVert]);

   // lock...
   bool lockArrays = dglDoesSupportCompiledVertexArray();
   if (lockArrays)
      glLockArraysEXT(0,vertsPerFrame);

   S32 matIndex = -1;

   for (S32 i=0; i<primitives.size(); i++)
   {
      TSDrawPrimitive & draw = primitives[i];
      AssertFatal(draw.matIndex & TSDrawPrimitive::Indexed,"TSMesh::render: rendering of non-indexed meshes no longer supported");

      if ( (matIndex ^ draw.matIndex) & (TSDrawPrimitive::MaterialMask|TSDrawPrimitive::NoMaterial))
      {
         // material change
         matIndex = draw.matIndex & (TSDrawPrimitive::MaterialMask|TSDrawPrimitive::NoMaterial);

         if (matIndex & TSDrawPrimitive::NoMaterial)
            // no material...
            continue;
         else
         {
            TSShapeInstance::smRenderData.detailMapTE = 0; // borrow this variable...use as a bool to flag that we have a dmap
            TextureHandle * detailMap = materials->getDetailMap(matIndex);
            if (detailMap)
               glBindTexture(GL_TEXTURE_2D,detailMap->getGLName());
            else
               continue;
            TSShapeInstance::smRenderData.detailMapTE = 1;
            F32 tscale = materials->getDetailMapScale(matIndex);
            if (mFabs(tscale-TSShapeInstance::smRenderData.detailTextureScale) > 0.001f)
            {
               // yes, update scale
               TSShapeInstance::smRenderData.detailTextureScale = tscale;
               glMatrixMode(GL_TEXTURE);
               MatrixF scaleMat;
               scaleMat.identity();
               for (S32 i=0; i<15; i++)
                  ((F32*)scaleMat)[i] *= tscale;
               dglLoadMatrix(&scaleMat);
               glMatrixMode(GL_MODELVIEW);
            }
         }
      }
      if (TSShapeInstance::smRenderData.detailMapTE)
         glDrawElements(getDrawType(draw.matIndex>>30),draw.numElements,GL_UNSIGNED_SHORT,&indices[draw.start]);
   }

   // unlock...
   if (lockArrays)
      glUnlockArraysEXT();
}

void TSMesh::initDetailMapMaterials()
{
   TSShapeInstance::smRenderData.detailTextureScale = 1.0f;

   glEnable(GL_TEXTURE_2D);
   glEnable(GL_BLEND);
   glEnable(GL_CULL_FACE);
   glFrontFace(GL_CW);
   glDepthMask(GL_TRUE);
   glBlendFunc(GL_DST_COLOR,GL_SRC_COLOR);
   glEnableClientState(GL_VERTEX_ARRAY);
   glEnableClientState(GL_NORMAL_ARRAY);
   glEnableClientState(GL_TEXTURE_COORD_ARRAY);

   // set texture environment color and fragment color
   // so that c=1-k/2 and f=k/2, where k is 1-detailMapAlpha
   // result is that distance from 0.5 is reduced as
   // detailMapAlpha goes to 0...
   F32 k = 0.5f * (1.0f - TSShapeInstance::smRenderData.detailMapAlpha);
   Point4F TEColor(1.0f-k,1.0f-k,1.0f-k,1.0f);
   glTexEnvfv(GL_TEXTURE_ENV,GL_TEXTURE_ENV_COLOR,TEColor);
   Point4F fColor(k,k,k,1.0f);
   glColor4fv(fColor);
   glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_BLEND);

   glDisable(GL_LIGHTING);
}

void TSMesh::resetDetailMapMaterials()
{
   glEnable(GL_LIGHTING);

   if (mFabs(TSShapeInstance::smRenderData.detailTextureScale-1.0f)>0.001f)
   {
      glMatrixMode(GL_TEXTURE);
      glLoadIdentity();
      glMatrixMode(GL_MODELVIEW);
   }

   glDisable(GL_BLEND);
   glDisable(GL_TEXTURE_2D);
   glDepthMask(GL_TRUE);
   glDisable(GL_CULL_FACE);
   glDisableClientState(GL_VERTEX_ARRAY);
   glDisableClientState(GL_NORMAL_ARRAY);
   glDisableClientState(GL_TEXTURE_COORD_ARRAY);

   glColor4fv(Point4F(1,1,1,1));
   glTexEnvfv(GL_TEXTURE_ENV,GL_TEXTURE_ENV_COLOR,Point4F(0,0,0,0));
   glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);
}

//-----------------------------------------------------
// TSMesh renderShadow
//-----------------------------------------------------

Vector<Point2I> gShadowVerts(__FILE__, __LINE__);

void shadowTransform(const MatrixF & mat, Point3F * v, Point3F * vend, S32 max)
{
   const F32 * m = (const F32*)mat;
   F32 ax = m[0];
   F32 ay = m[1];
   F32 az = m[2];
   F32 at = m[3];
   F32 bx = m[8];
   F32 by = m[9];
   F32 bz = m[10];
   F32 bt = m[11];

   Point2I * dest = gShadowVerts.address();
   S32 val;

   while (v < vend)
   {
      val = (S32)(ax*v->x + ay*v->y + az*v->z + at);
      dest->x = val<0 ? 0 : (val>max ? max : val);

      val = (S32)(bx*v->x + by*v->y + bz*v->z + bt);
      dest->y = val<0 ? 0 : (val>max ? max : val);

      dest++; v++;
   }
}

void TSMesh::renderShadow(S32 frame, const MatrixF & mat, S32 dim, U32 * bits, TSMaterialList * materials)
{
   if (!vertsPerFrame || !primitives.size())
      return;

   if (!(primitives[0].matIndex & TSDrawPrimitive::NoMaterial) && (TSMaterialList::Translucent & materials->getFlags(primitives[0].matIndex & TSDrawPrimitive::MaterialMask)))
      // if no material...it would be nice to just exit...but may have some real polys back there...
      return;

   AssertFatal(primitives[0].matIndex & TSDrawPrimitive::Indexed,"TSMesh::renderShadow: indexed polys only");

   gShadowVerts.setSize(vertsPerFrame);
   Point3F * vstart = &verts[frame*vertsPerFrame];
   Point3F * vend   = vstart + vertsPerFrame;

   // result placed into gShadowVerts
   shadowTransform(mat,vstart,vend,dim-1);

   // pick correct bit render routine...we assume all strips or all triangles
   if ( (primitives[0].matIndex & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Strip)
      BitRender::render_strips((U8*)primitives.address(),primitives.size(),sizeof(TSDrawPrimitive),indices.address(),gShadowVerts.address(),dim,bits);
   else if ( (primitives[0].matIndex & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Triangles)
      BitRender::render_tris((U8*)primitives.address(),primitives.size(),sizeof(TSDrawPrimitive),indices.address(),gShadowVerts.address(),dim,bits);
   else
      AssertFatal(0,"TSMesh::renderShadow: strips or triangles only...how'd you get in here.");
}


//-----------------------------------------------------
// TSMesh render fog
//-----------------------------------------------------
void TSMesh::renderFog(S32 frame, TSMaterialList* materials)
{
   if (getFlags(Billboard))
   {
      if (getFlags(BillboardZAxis))
         forceFaceCameraZAxis();
      else
         forceFaceCamera();
   }

   S32 firstVert  = vertsPerFrame * frame;

   // set up vertex arrays -- already enabled in TSShapeInstance::render
   glVertexPointer(3,GL_FLOAT,0,&verts[firstVert]);

   // lock...
   bool lockArrays = dglDoesSupportCompiledVertexArray();
   if (lockArrays)
      glLockArraysEXT(0,vertsPerFrame);

   for (S32 i=0; i<primitives.size(); i++)
   {
      TSDrawPrimitive & draw = primitives[i];
      if (primitives[i].matIndex & TSDrawPrimitive::NoMaterial ||
          materials->getFlags(primitives[i].matIndex & TSDrawPrimitive::MaterialMask) & (TSMaterialList::Translucent | TSMaterialList::Additive))
         continue;

      glDrawElements(getDrawType(draw.matIndex>>30),draw.numElements,GL_UNSIGNED_SHORT,&indices[draw.start]);
   }

   // unlock...
   if (lockArrays)
      glUnlockArraysEXT();
}

//-----------------------------------------------------
// TSMesh collision methods
//-----------------------------------------------------

bool TSMesh::buildPolyList(S32 frame, AbstractPolyList * polyList, U32 & surfaceKey)
{
   S32 firstVert  = vertsPerFrame * frame, i, base;

   // add the verts...
   if (vertsPerFrame)
   {
      base = polyList->addPoint(verts[firstVert]);
      for (i=1; i<vertsPerFrame; i++)
         polyList->addPoint(verts[i+firstVert]);
   }

   // add the polys...
   for (i=0; i<primitives.size(); i++)
   {
      TSDrawPrimitive & draw = primitives[i];
      U32 start = draw.start;

      AssertFatal(draw.matIndex & TSDrawPrimitive::Indexed,"TSMesh::buildPolyList (1)");

      U32 material = draw.matIndex & TSDrawPrimitive::MaterialMask;

      // gonna depend on what kind of primitive it is...
      if ( (draw.matIndex & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Triangles)
      {
         for (S32 j=0; j<draw.numElements; )
         {
            U32 idx0 = base + indices[start + j + 0];
            U32 idx1 = base + indices[start + j + 1];
            U32 idx2 = base + indices[start + j + 2];
            polyList->begin(material,surfaceKey++);
            polyList->vertex(idx0);
            polyList->vertex(idx1);
            polyList->vertex(idx2);
            polyList->plane(idx0,idx1,idx2);
            polyList->end();
            j += 3;
         }
      }
      else
      {
         AssertFatal((draw.matIndex & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Strip,"TSMesh::buildPolyList (2)");

         U32 idx0 = base + indices[start + 0];
         U32 idx1;
         U32 idx2 = base + indices[start + 1];
         U32 * nextIdx = &idx1;
         for (S32 j=2; j<draw.numElements; j++)
         {
            *nextIdx = idx2;
//            nextIdx = (j%2)==0 ? &idx0 : &idx1;
            nextIdx = (U32*) ( (dsize_t)nextIdx ^ (dsize_t)&idx0 ^ (dsize_t)&idx1);
            idx2 = base + indices[start + j];
            if (idx0 == idx1 || idx0 == idx2 || idx1 == idx2)
               continue;

            polyList->begin(material,surfaceKey++);
            polyList->vertex(idx0);
            polyList->vertex(idx1);
            polyList->vertex(idx2);
            polyList->plane(idx0,idx1,idx2);
            polyList->end();
         }
      }
   }
   return true;
}

bool TSMesh::getFeatures(S32 frame, const MatrixF& mat, const VectorF& /*n*/, ConvexFeature* cf, U32& /*surfaceKey*/)
{
   // DMM NOTE! Do not change without talking to Dave Moore.  ShapeBase assumes that
   //  this will return ALL information from the mesh.
   S32 firstVert = vertsPerFrame * frame;
   S32 i;
   S32 base = cf->mVertexList.size();

   for (i = 0; i < vertsPerFrame; i++) {
      cf->mVertexList.increment();
      mat.mulP(verts[firstVert + i], &cf->mVertexList.last());
   }

   // add the polys...
   for (i=0; i < primitives.size(); i++)
   {
      TSDrawPrimitive & draw = primitives[i];
      U32 start = draw.start;

      AssertFatal(draw.matIndex & TSDrawPrimitive::Indexed,"TSMesh::buildPolyList (1)");

      U32 material = draw.matIndex & TSDrawPrimitive::MaterialMask;

      // gonna depend on what kind of primitive it is...
      if ( (draw.matIndex & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Triangles)
      {
         for (S32 j=0; j<draw.numElements; j+=3)
         {
            PlaneF plane(cf->mVertexList[base + indices[start + j + 0]],
                         cf->mVertexList[base + indices[start + j + 1]],
                         cf->mVertexList[base + indices[start + j + 2]]);

            cf->mFaceList.increment();
            cf->mFaceList.last().normal = plane;

            cf->mFaceList.last().vertex[0] = base + indices[start + j + 0];
            cf->mFaceList.last().vertex[1] = base + indices[start + j + 1];
            cf->mFaceList.last().vertex[2] = base + indices[start + j + 2];

            for (U32 l = 0; l < 3; l++) {
               U32 newEdge0, newEdge1;
               U32 zero = base + indices[start + j + l];
               U32 one  = base + indices[start + j + ((l+1)%3)];
               newEdge0 = getMin(zero, one);
               newEdge1 = getMax(zero, one);
               bool found = false;
               for (S32 k = 0; k < cf->mEdgeList.size(); k++) {
                  if (cf->mEdgeList[k].vertex[0] == newEdge0 &&
                      cf->mEdgeList[k].vertex[1] == newEdge1) {
                     found = true;
                     break;
                  }
               }
               if (!found) {
                  cf->mEdgeList.increment();
                  cf->mEdgeList.last().vertex[0] = newEdge0;
                  cf->mEdgeList.last().vertex[1] = newEdge1;
               }
            }
         }
      }
      else
      {
         AssertFatal((draw.matIndex & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Strip,"TSMesh::buildPolyList (2)");

         U32 idx0 = base + indices[start + 0];
         U32 idx1;
         U32 idx2 = base + indices[start + 1];
         U32 * nextIdx = &idx1;
         for (S32 j=2; j<draw.numElements; j++)
         {
            *nextIdx = idx2;
            nextIdx = (U32*) ( (dsize_t)nextIdx ^ (dsize_t)&idx0 ^ (dsize_t)&idx1);
            idx2 = base + indices[start + j];
            if (idx0 == idx1 || idx0 == idx2 || idx1 == idx2)
               continue;

            PlaneF plane(cf->mVertexList[idx0],
                         cf->mVertexList[idx1],
                         cf->mVertexList[idx2]);

            cf->mFaceList.increment();
            cf->mFaceList.last().normal = plane;

            cf->mFaceList.last().vertex[0] = idx0;
            cf->mFaceList.last().vertex[1] = idx1;
            cf->mFaceList.last().vertex[2] = idx2;

            U32 newEdge0, newEdge1;
            newEdge0 = getMin(idx0, idx1);
            newEdge1 = getMax(idx0, idx1);
            bool found = false;
            S32 k;
            for (k = 0; k < cf->mEdgeList.size(); k++) {
               if (cf->mEdgeList[k].vertex[0] == newEdge0 &&
                   cf->mEdgeList[k].vertex[1] == newEdge1) {
                  found = true;
                  break;
               }
            }
            if (!found) {
               cf->mEdgeList.increment();
               cf->mEdgeList.last().vertex[0] = newEdge0;
               cf->mEdgeList.last().vertex[1] = newEdge1;
            }

            newEdge0 = getMin(idx1, idx2);
            newEdge1 = getMax(idx1, idx2);
            found = false;
            for (k = 0; k < cf->mEdgeList.size(); k++) {
               if (cf->mEdgeList[k].vertex[0] == newEdge0 &&
                   cf->mEdgeList[k].vertex[1] == newEdge1) {
                  found = true;
                  break;
               }
            }
            if (!found) {
               cf->mEdgeList.increment();
               cf->mEdgeList.last().vertex[0] = newEdge0;
               cf->mEdgeList.last().vertex[1] = newEdge1;
            }

            newEdge0 = getMin(idx0, idx2);
            newEdge1 = getMax(idx0, idx2);
            found = false;
            for (k = 0; k < cf->mEdgeList.size(); k++) {
               if (cf->mEdgeList[k].vertex[0] == newEdge0 &&
                   cf->mEdgeList[k].vertex[1] == newEdge1) {
                  found = true;
                  break;
               }
            }
            if (!found) {
               cf->mEdgeList.increment();
               cf->mEdgeList.last().vertex[0] = newEdge0;
               cf->mEdgeList.last().vertex[1] = newEdge1;
            }
         }
      }
   }

   return false;
}


void TSMesh::support(S32 frame, const Point3F& v, F32* currMaxDP, Point3F* currSupport)
{
   if (vertsPerFrame == 0)
      return;

   U32 waterMark = FrameAllocator::getWaterMark();
   F32* pDots = (F32*)FrameAllocator::alloc(sizeof(F32) * vertsPerFrame);

   S32 firstVert = vertsPerFrame * frame;
   m_point3F_bulk_dot(&v.x,
                      &verts[firstVert].x,
                      vertsPerFrame,
                      sizeof(Point3F),
                      pDots);

   F32 localdp = *currMaxDP;
   S32 index   = -1;

   for (S32 i = 0; i < vertsPerFrame; i++)
   {
      if (pDots[i] > localdp)
      {
         localdp = pDots[i];
         index   = i;
      }
   }

   FrameAllocator::setWaterMark(waterMark);

   if (index != -1)
   {
      *currMaxDP   = localdp;
      *currSupport = verts[index + firstVert];
   }
}

bool TSMesh::castRay(S32 frame, const Point3F & start, const Point3F & end, RayInfo * rayInfo)
{
   if (planeNormals.empty())
      // if haven't done it yet...
      buildConvexHull();

   // Keep track of startTime and endTime.  They start out at just under 0 and just over 1, respectively.
   // As we check against each plane, prune start and end times back to represent current intersection of
   // line with all the planes (or rather with all the half-spaces defined by the planes).
   // But, instead of explicitly keeping track of startTime and endTime, keep track as numerator and denominator
   // so that we can avoid as many divisions as possible.

   //   F32 startTime = -0.01f;
   F32 startNum = -0.01f;
   F32 startDen =  1.00f;
   //   F32 endTime   = 1.01f;
   F32 endNum = 1.01f;
   F32 endDen = 1.00f;

   S32 curPlane = 0;
   U32 curMaterial = 0;
   bool found = false;

   // the following block of code is an optimization...
   // it isn't necessary if the longer version of the main loop is used
   bool tmpFound;
   S32 tmpPlane;
   F32 sgn = -1.0f;
   F32 * pnum = &startNum;
   F32 * pden = &startDen;
   S32 * pplane = &curPlane;
   bool * pfound = &found;

   S32 startPlane = frame * planesPerFrame;
   for (S32 i=startPlane; i<startPlane+planesPerFrame; i++)
   {
      // if start & end outside, no collision
      // if start & end inside, continue
      // if start outside, end inside, or visa versa, find intersection of line with plane
      //    then update intersection of line with hull (using startTime and endTime)
      F32 dot1 = mDot(planeNormals[i],start) - planeConstants[i];
      F32 dot2 = mDot(planeNormals[i],end) - planeConstants[i];
      if (dot1*dot2>0.0f)
      {
         // same side of the plane...which side -- dot==0 considered inside
         if (dot1>0.0f)
            // start and end outside of this plane, no collision
            return false;
         // start and end inside plane, continue
         continue;
      }

      AssertFatal(dot1/(dot1-dot2)>=0.0f && dot1/(dot1-dot2)<=1.0f,"TSMesh::castRay (1)");

      // find intersection (time) with this plane...
      // F32 time = dot1 / (dot1-dot2);
      F32 num = mFabs(dot1);
      F32 den = mFabs(dot1-dot2);

      // the following block of code is an optimized version...
      // this can be commented out and the following block of code used instead
      // if debugging a problem in this code, that should probably be done
      // if you want to see how this works, look at the following block of code,
      // not this one...
      // Note that this does not get optimized appropriately...it is included this way
      // as an idea for future optimization.
      if (sgn*dot1>=0)
      {
         sgn *= -1.0f;
         pnum = (F32*) ((dsize_t)pnum ^ (dsize_t)&endNum ^ (dsize_t)&startNum);
         pden = (F32*) ((dsize_t)pden ^ (dsize_t)&endDen ^ (dsize_t)&startDen);
         pplane = (S32*) ((dsize_t)pplane ^ (dsize_t)&tmpPlane ^ (dsize_t)&curPlane);
         pfound = (bool*) ((dsize_t)pfound ^ (dsize_t)&tmpFound ^ (dsize_t)&found);
      }
      bool noCollision = num*endDen*sgn<endNum*den*sgn && num*startDen*sgn<startNum*den*sgn;
      if (num * *pden * sgn < *pnum * den * sgn && !noCollision)
      {
         *pnum = num;
         *pden = den;
         *pplane = i;
         *pfound = true;
      }
      else if (noCollision)
         return false;

//      if (dot1<=0.0f)
//      {
//         // start is inside plane, end is outside...chop off end
//         if (num*endDen<endNum*den) // if (time<endTime)
//         {
//            if (num*startDen<startNum*den) //if (time<startTime)
//               // no intersection of line and hull
//               return false;
//            // endTime = time;
//            endNum = num;
//            endDen = den;
//         }
//         // else, no need to do anything, just continue (we've been more inside than this)
//      }
//      else // dot2<=0.0f
//      {
//         // end is inside poly, start is outside...chop off start
//         AssertFatal(dot2<=0.0f,"TSMesh::castRay (2)");
//         if (num*startDen>startNum*den) // if (time>startTime)
//        {
//            if (num*endDen>endNum*den) //if (time>endTime)
//               // no intersection of line and hull
//               return false;
//            // startTime   = time;
//            startNum = num;
//            startDen = den;
//            curPlane    = i;
//            curMaterial = planeMaterials[i-startPlane];
//            found = true;
//         }
//         // else, no need to do anything, just continue (we've been more inside than this)
//      }
   }

   // setup rayInfo
   if (found && rayInfo)
   {
      rayInfo->t        = (F32)startNum/(F32)startDen; // finally divide...
      rayInfo->normal   = planeNormals[curPlane];
      rayInfo->material = curMaterial;
      return true;
   }
   else if (found)
      return true;

   // only way to get here is if start is inside hull...
   // we could return null and just plug in garbage for the material and normal...
   return false;
}

bool TSMesh::addToHull(U32 idx0, U32 idx1, U32 idx2)
{
   Point3F normal;
   mCross(verts[idx2]-verts[idx0],verts[idx1]-verts[idx0],&normal);
   if (mDot(normal,normal)<0.001f)
   {
      mCross(verts[idx0]-verts[idx1],verts[idx2]-verts[idx1],&normal);
      if (mDot(normal,normal)<0.001f)
      {
         mCross(verts[idx1]-verts[idx2],verts[idx0]-verts[idx2],&normal);
         if (mDot(normal,normal)<0.001f)
            return false;
      }
   }
   normal.normalize();
   F32 k = mDot(normal,verts[idx0]);
   for (S32 i=0; i<planeNormals.size(); i++)
   {
      if (mDot(planeNormals[i],normal)>0.99f && mFabs(k-planeConstants[i])<0.01f)
         // this is a repeat...
         return false;
   }
   // new plane, add it to the list...
   planeNormals.push_back(normal);
   planeConstants.push_back(k);
   return true;
}

bool TSMesh::buildConvexHull()
{
   // already done, return without error
   if (planeNormals.size())
      return true;

   bool error = false;

   // should probably only have 1 frame, but just in case...
   planesPerFrame = 0;
   S32 frame, i, j;
   for (frame=0; frame<numFrames; frame++)
   {
      S32 firstVert  = vertsPerFrame * frame;
      S32 firstPlane = planeNormals.size();
      for (i=0; i<primitives.size(); i++)
      {
         TSDrawPrimitive & draw = primitives[i];
         U32 start = draw.start;

         AssertFatal(draw.matIndex & TSDrawPrimitive::Indexed,"TSMesh::buildConvexHull (1)");

         // gonna depend on what kind of primitive it is...
         U32 material = draw.matIndex & TSDrawPrimitive::MaterialMask;
         if ( (draw.matIndex&TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Triangles)
         {
            for (j=0; j<draw.numElements; j+=3)
               if (addToHull(indices[start+j+0]+firstVert,indices[start+j+1]+firstVert,indices[start+j+2]+firstVert) && frame==0)
                  planeMaterials.push_back(draw.matIndex & TSDrawPrimitive::MaterialMask);
         }
         else
         {
            AssertFatal((draw.matIndex&TSDrawPrimitive::Strip) == TSDrawPrimitive::Strip,"TSMesh::buildConvexHull (2)");

            U32 idx0 = indices[start + 0] + firstVert;
            U32 idx1;
            U32 idx2 = indices[start + 1] + firstVert;
            U32 * nextIdx = &idx1;
            for (j=2; j<draw.numElements; j++)
            {
               *nextIdx = idx2;
//               nextIdx = (j%2)==0 ? &idx0 : &idx1;
               nextIdx = (U32*) ( (dsize_t)nextIdx ^ (dsize_t)&idx0 ^ (dsize_t)&idx1);
               idx2 = indices[start + j] + firstVert;
               if (addToHull(idx0,idx1,idx2) && frame==0)
                  planeMaterials.push_back(draw.matIndex & TSDrawPrimitive::MaterialMask);
            }
         }
      }
      // make sure all the verts on this frame are inside all the planes
      for (i=0; i<vertsPerFrame; i++)
         for (j=firstPlane; j<planeNormals.size(); j++)
            if (mDot(verts[firstVert+i],planeNormals[j])-planeConstants[j]<0.01) // .01 == a little slack
               error = true;
      if (frame==0)
         planesPerFrame = planeNormals.size();

      if ( (frame+1) * planesPerFrame != planeNormals.size() )
      {
         // eek, not all frames have same number of planes...
         while ( (frame+1) * planesPerFrame > planeNormals.size() )
         {
            // we're short, duplicate last plane till we match
            U32 sz = planeNormals.size();
            planeNormals.increment();
            planeNormals.last() = planeNormals[sz-1];
            planeConstants.increment();
            planeConstants.last() = planeConstants[sz-1];
         }
         while ( (frame+1) * planesPerFrame < planeNormals.size() )
         {
            // harsh -- last frame has more than other frames
            // duplicate last plane in each frame
            for (S32 k=frame-1; k>=0; k--)
            {
               planeNormals.insert(k*planesPerFrame+planesPerFrame);
               planeNormals[k*planesPerFrame+planesPerFrame] = planeNormals[k*planesPerFrame+planesPerFrame-1];
               planeConstants.insert(k*planesPerFrame+planesPerFrame);
               planeConstants[k*planesPerFrame+planesPerFrame] = planeConstants[k*planesPerFrame+planesPerFrame-1];
               if (k==0)
               {
                  planeMaterials.increment();
                  planeMaterials.last() = planeMaterials[planeMaterials.size()-2];
               }
            }
            planesPerFrame++;
         }
      }
      AssertFatal((frame+1) * planesPerFrame == planeNormals.size(),"TSMesh::buildConvexHull (3)");
   }
   return !error;
}

//-----------------------------------------------------
// TSMesh bounds methods
//-----------------------------------------------------

void TSMesh::computeBounds()
{
   MatrixF mat(true);
   computeBounds(mat,mBounds,-1,&mCenter,&mRadius);
}

void TSMesh::computeBounds(MatrixF & transform, Box3F & bounds, S32 frame, Point3F * center, F32 * radius)
{
   if (frame<0)
      computeBounds(verts.address(),verts.size(),transform,bounds,center,radius);
   else
      computeBounds(verts.address() + frame * vertsPerFrame,vertsPerFrame,transform,bounds,center,radius);
}

void TSMesh::computeBounds(Point3F * v, S32 numVerts, MatrixF & transform, Box3F & bounds, Point3F * center, F32 * radius)
{
   if (!numVerts)
   {
      bounds.min.set(0,0,0);
      bounds.max.set(0,0,0);
      if (center)
         center->set(0,0,0);
      if (radius)
         *radius = 0;
      return;
   }

   S32 i;
   Point3F p;
   transform.mulP(*v,&bounds.min);
   bounds.max = bounds.min;
   for (i=0; i<numVerts; i++)
   {
      transform.mulP(v[i],&p);
      bounds.max.setMax(p);
      bounds.min.setMin(p);
   }
   Point3F c;
   if (!center)
      center = &c;
   center->x = 0.5f * (bounds.min.x + bounds.max.x);
   center->y = 0.5f * (bounds.min.y + bounds.max.y);
   center->z = 0.5f * (bounds.min.z + bounds.max.z);
   if (radius)
   {
      *radius = 0.0f;
      for (i=0; i<numVerts; i++)
      {
         transform.mulP(v[i],&p);
         p -= *center;
         *radius = getMax(*radius,mDot(p,p));
      }
      *radius = mSqrt(*radius);
   }
}

//-----------------------------------------------------

S32 TSMesh::getNumPolys()
{
   S32 count = 0;
   for (S32 i=0; i<primitives.size(); i++)
   {
      if ((primitives[i].matIndex & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Triangles)
         count += primitives[i].numElements / 3;
      else
         count += primitives[i].numElements - 2;
   }
   return count;
}

//-----------------------------------------------------
// TSMesh destructor
//-----------------------------------------------------

TSMesh::~TSMesh()
{
}

//-----------------------------------------------------
// TSSkinMesh methods
//-----------------------------------------------------

Vector<MatrixF> gBoneTransforms;
Vector<Point3F> gSkinVerts;
Vector<Point3F> gSkinNorms;

/// Chris Lomont version of fast inverse sqrt,
/// based on Newton method, 1 iteration, more accurate
/// We use here for skinning cuz we don't need much accuracy -- BJG
F32 InvSqrt_Lomont(F32 x)
{
   F32 xhalf = 0.5f*x;
   S32 i = *(S32*)&x;
   i = 0x5f375a84 - (i>>1); // hidden initial guess, fast
   x = *(F32*)&i;
   x = x*(1.5f-xhalf*x*x);
   return x;
}

void TSSkinMesh::updateSkin()
{
   // setup arrays
   gBoneTransforms.setSize(nodeIndex.size());
#if defined(TORQUE_LIB)
   verts.setSize(initialVerts.size());
   norms.setSize(initialVerts.size());
#else
   if (encodedNorms.size())
   {
      // we co-opt responsibility for updating encoded normals from mesh
      gNormalStore.setSize(vertsPerFrame);
      for (S32 i=0; i<vertsPerFrame; i++)
         gNormalStore[i]=decodeNormal(encodedNorms[i]);
      initialNorms.set(gNormalStore.address(),vertsPerFrame);
   }
   gSkinVerts.setSize(initialVerts.size());
   gSkinNorms.setSize(initialNorms.size());
   verts.set(gSkinVerts.address(),gSkinVerts.size());
   norms.set(gSkinNorms.address(),gSkinNorms.size());
#endif

   // set up bone transforms
   S32 i;
   for (i=0; i<nodeIndex.size(); i++)
   {
      S32 node = nodeIndex[i];
      gBoneTransforms[i].mul(TSShapeInstance::ObjectInstance::smTransforms[node],initialTransforms[i]);
   }

   // multiply verts and normals by boneTransforms
   S32 prevIndex = -1;
   S32 vertexIndexSize = vertexIndex.size();
   Point3F v0,n0;
   // TODO: vectorize this.
   for (i=0; i<vertexIndexSize; i++)
   {
      const S32 &vIndex = vertexIndex[i];
      const MatrixF & deltaTransform = gBoneTransforms[boneIndex[i]];
      deltaTransform.mulP(initialVerts[vIndex],&v0);
      deltaTransform.mulV(initialNorms[vIndex],&n0);
      v0 *= weight[i];
      n0 *= weight[i];
      Point3F & v = verts[vIndex];
      Point3F & n = norms[vIndex];
      // this should be implemented as a series of conditional moves to avoid the branch
      if (vIndex != prevIndex)
      {
         v.x = 0.0f;
         v.y = 0.0f;
         v.z = 0.0f;
         n.x = 0.0f;
         n.y = 0.0f;
         n.z = 0.0f;
      }
      v += v0;
      n += n0;
      prevIndex = vIndex;
   }

   // normalize normals...
   for (i=0; i<norms.size(); i++)
   {
      // gotta do a check now since shared verts between meshes
      // may result in an unused vert in the list...
      Point3F & n = norms[i];
      F32 len2 = mDot(n,n);
      if (len2>0.01f)
         norms[i] *= InvSqrt_Lomont(len2); // 1.0f/mSqrt(len2);
   }
}

void TSSkinMesh::render(S32 frame, S32 matFrame, TSMaterialList * materials)
{
   // update verts and normals...
   updateSkin();

   // render...
   Parent::render(frame,matFrame,materials);
}

void TSSkinMesh::renderShadow(S32 frame, const MatrixF & mat, S32 dim, U32 * bits, TSMaterialList * materials)
{
   // update verts and normals...
   updateSkin();

   // render...
   Parent::renderShadow(frame,mat,dim,bits,materials);
}


bool TSSkinMesh::buildPolyList(S32 frame, AbstractPolyList * polyList, U32 & surfaceKey)
{
   // update verts and normals...
   updateSkin();

   // render...
   return Parent::buildPolyList(frame,polyList,surfaceKey);
}

bool TSSkinMesh::castRay(S32 frame, const Point3F & start, const Point3F & end, RayInfo * rayInfo)
{
   frame,start,end,rayInfo;
   return false;
}

bool TSSkinMesh::buildConvexHull()
{
   return false; // no error, but we don't do anything either...
}

void TSSkinMesh::computeBounds(MatrixF & transform, Box3F & bounds, S32 frame, Point3F * center, F32 * radius)
{
   frame;
   TSMesh::computeBounds(initialVerts.address(),initialVerts.size(),transform,bounds,center,radius);
}

//-----------------------------------------------------
// encoded normals
//-----------------------------------------------------

const Point3F TSMesh::smU8ToNormalTable[] =
{
      Point3F( 0.565061f, -0.270644f, -0.779396f ),
      Point3F( -0.309804f, -0.731114f, 0.607860f ),
      Point3F( -0.867412f, 0.472957f, 0.154619f ),
      Point3F( -0.757488f, 0.498188f, -0.421925f ),
      Point3F( 0.306834f, -0.915340f, 0.260778f ),
      Point3F( 0.098754f, 0.639153f, -0.762713f ),
      Point3F( 0.713706f, -0.558862f, -0.422252f ),
      Point3F( -0.890431f, -0.407603f, -0.202466f ),
      Point3F( 0.848050f, -0.487612f, -0.207475f ),
      Point3F( -0.232226f, 0.776855f, 0.585293f ),
      Point3F( -0.940195f, 0.304490f, -0.152706f ),
      Point3F( 0.602019f, -0.491878f, -0.628991f ),
      Point3F( -0.096835f, -0.494354f, -0.863850f ),
      Point3F( 0.026630f, -0.323659f, -0.945799f ),
      Point3F( 0.019208f, 0.909386f, 0.415510f ),
      Point3F( 0.854440f, 0.491730f, 0.167731f ),
      Point3F( -0.418835f, 0.866521f, -0.271512f ),
      Point3F( 0.465024f, 0.409667f, 0.784809f ),
      Point3F( -0.674391f, -0.691087f, -0.259992f ),
      Point3F( 0.303858f, -0.869270f, -0.389922f ),
      Point3F( 0.991333f, 0.090061f, -0.095640f ),
      Point3F( -0.275924f, -0.369550f, 0.887298f ),
      Point3F( 0.426545f, -0.465962f, 0.775202f ),
      Point3F( -0.482741f, -0.873278f, -0.065920f ),
      Point3F( 0.063616f, 0.932012f, -0.356800f ),
      Point3F( 0.624786f, -0.061315f, 0.778385f ),
      Point3F( -0.530300f, 0.416850f, 0.738253f ),
      Point3F( 0.312144f, -0.757028f, -0.573999f ),
      Point3F( 0.399288f, -0.587091f, -0.704197f ),
      Point3F( -0.132698f, 0.482877f, 0.865576f ),
      Point3F( 0.950966f, 0.306530f, 0.041268f ),
      Point3F( -0.015923f, -0.144300f, 0.989406f ),
      Point3F( -0.407522f, -0.854193f, 0.322925f ),
      Point3F( -0.932398f, 0.220464f, 0.286408f ),
      Point3F( 0.477509f, 0.876580f, 0.059936f ),
      Point3F( 0.337133f, 0.932606f, -0.128796f ),
      Point3F( -0.638117f, 0.199338f, 0.743687f ),
      Point3F( -0.677454f, 0.445349f, 0.585423f ),
      Point3F( -0.446715f, 0.889059f, -0.100099f ),
      Point3F( -0.410024f, 0.909168f, 0.072759f ),
      Point3F( 0.708462f, 0.702103f, -0.071641f ),
      Point3F( -0.048801f, -0.903683f, -0.425411f ),
      Point3F( -0.513681f, -0.646901f, 0.563606f ),
      Point3F( -0.080022f, 0.000676f, -0.996793f ),
      Point3F( 0.066966f, -0.991150f, -0.114615f ),
      Point3F( -0.245220f, 0.639318f, -0.728793f ),
      Point3F( 0.250978f, 0.855979f, 0.452006f ),
      Point3F( -0.123547f, 0.982443f, -0.139791f ),
      Point3F( -0.794825f, 0.030254f, -0.606084f ),
      Point3F( -0.772905f, 0.547941f, 0.319967f ),
      Point3F( 0.916347f, 0.369614f, -0.153928f ),
      Point3F( -0.388203f, 0.105395f, 0.915527f ),
      Point3F( -0.700468f, -0.709334f, 0.078677f ),
      Point3F( -0.816193f, 0.390455f, 0.425880f ),
      Point3F( -0.043007f, 0.769222f, -0.637533f ),
      Point3F( 0.911444f, 0.113150f, 0.395560f ),
      Point3F( 0.845801f, 0.156091f, -0.510153f ),
      Point3F( 0.829801f, -0.029340f, 0.557287f ),
      Point3F( 0.259529f, 0.416263f, 0.871418f ),
      Point3F( 0.231128f, -0.845982f, 0.480515f ),
      Point3F( -0.626203f, -0.646168f, 0.436277f ),
      Point3F( -0.197047f, -0.065791f, 0.978184f ),
      Point3F( -0.255692f, -0.637488f, -0.726794f ),
      Point3F( 0.530662f, -0.844385f, -0.073567f ),
      Point3F( -0.779887f, 0.617067f, -0.104899f ),
      Point3F( 0.739908f, 0.113984f, 0.662982f ),
      Point3F( -0.218801f, 0.930194f, -0.294729f ),
      Point3F( -0.374231f, 0.818666f, 0.435589f ),
      Point3F( -0.720250f, -0.028285f, 0.693137f ),
      Point3F( 0.075389f, 0.415049f, 0.906670f ),
      Point3F( -0.539724f, -0.106620f, 0.835063f ),
      Point3F( -0.452612f, -0.754669f, -0.474991f ),
      Point3F( 0.682822f, 0.581234f, -0.442629f ),
      Point3F( 0.002435f, -0.618462f, -0.785811f ),
      Point3F( -0.397631f, 0.110766f, -0.910835f ),
      Point3F( 0.133935f, -0.985438f, 0.104754f ),
      Point3F( 0.759098f, -0.608004f, 0.232595f ),
      Point3F( -0.825239f, -0.256087f, 0.503388f ),
      Point3F( 0.101693f, -0.565568f, 0.818408f ),
      Point3F( 0.386377f, 0.793546f, -0.470104f ),
      Point3F( -0.520516f, -0.840690f, 0.149346f ),
      Point3F( -0.784549f, -0.479672f, 0.392935f ),
      Point3F( -0.325322f, -0.927581f, -0.183735f ),
      Point3F( -0.069294f, -0.428541f, 0.900861f ),
      Point3F( 0.993354f, -0.115023f, -0.004288f ),
      Point3F( -0.123896f, -0.700568f, 0.702747f ),
      Point3F( -0.438031f, -0.120880f, -0.890795f ),
      Point3F( 0.063314f, 0.813233f, 0.578484f ),
      Point3F( 0.322045f, 0.889086f, -0.325289f ),
      Point3F( -0.133521f, 0.875063f, -0.465228f ),
      Point3F( 0.637155f, 0.564814f, 0.524422f ),
      Point3F( 0.260092f, -0.669353f, 0.695930f ),
      Point3F( 0.953195f, 0.040485f, -0.299634f ),
      Point3F( -0.840665f, -0.076509f, 0.536124f ),
      Point3F( -0.971350f, 0.202093f, 0.125047f ),
      Point3F( -0.804307f, -0.396312f, -0.442749f ),
      Point3F( -0.936746f, 0.069572f, 0.343027f ),
      Point3F( 0.426545f, -0.465962f, 0.775202f ),
      Point3F( 0.794542f, -0.227450f, 0.563000f ),
      Point3F( -0.892172f, 0.091169f, -0.442399f ),
      Point3F( -0.312654f, 0.541264f, 0.780564f ),
      Point3F( 0.590603f, -0.735618f, -0.331743f ),
      Point3F( -0.098040f, -0.986713f, 0.129558f ),
      Point3F( 0.569646f, 0.283078f, -0.771603f ),
      Point3F( 0.431051f, -0.407385f, -0.805129f ),
      Point3F( -0.162087f, -0.938749f, -0.304104f ),
      Point3F( 0.241533f, -0.359509f, 0.901341f ),
      Point3F( -0.576191f, 0.614939f, 0.538380f ),
      Point3F( -0.025110f, 0.085740f, 0.996001f ),
      Point3F( -0.352693f, -0.198168f, 0.914515f ),
      Point3F( -0.604577f, 0.700711f, 0.378802f ),
      Point3F( 0.465024f, 0.409667f, 0.784809f ),
      Point3F( -0.254684f, -0.030474f, -0.966544f ),
      Point3F( -0.604789f, 0.791809f, 0.085259f ),
      Point3F( -0.705147f, -0.399298f, 0.585943f ),
      Point3F( 0.185691f, 0.017236f, -0.982457f ),
      Point3F( 0.044588f, 0.973094f, 0.226052f ),
      Point3F( -0.405463f, 0.642367f, 0.650357f ),
      Point3F( -0.563959f, 0.599136f, -0.568319f ),
      Point3F( 0.367162f, -0.072253f, -0.927347f ),
      Point3F( 0.960429f, -0.213570f, -0.178783f ),
      Point3F( -0.192629f, 0.906005f, 0.376893f ),
      Point3F( -0.199718f, -0.359865f, -0.911378f ),
      Point3F( 0.485072f, 0.121233f, -0.866030f ),
      Point3F( 0.467163f, -0.874294f, 0.131792f ),
      Point3F( -0.638953f, -0.716603f, 0.279677f ),
      Point3F( -0.622710f, 0.047813f, -0.780990f ),
      Point3F( 0.828724f, -0.054433f, -0.557004f ),
      Point3F( 0.130241f, 0.991080f, 0.028245f ),
      Point3F( 0.310995f, -0.950076f, -0.025242f ),
      Point3F( 0.818118f, 0.275336f, 0.504850f ),
      Point3F( 0.676328f, 0.387023f, 0.626733f ),
      Point3F( -0.100433f, 0.495114f, -0.863004f ),
      Point3F( -0.949609f, -0.240681f, -0.200786f ),
      Point3F( -0.102610f, 0.261831f, -0.959644f ),
      Point3F( -0.845732f, -0.493136f, 0.203850f ),
      Point3F( 0.672617f, -0.738838f, 0.041290f ),
      Point3F( 0.380465f, 0.875938f, 0.296613f ),
      Point3F( -0.811223f, 0.262027f, -0.522742f ),
      Point3F( -0.074423f, -0.775670f, -0.626736f ),
      Point3F( -0.286499f, 0.755850f, -0.588735f ),
      Point3F( 0.291182f, -0.276189f, -0.915933f ),
      Point3F( -0.638117f, 0.199338f, 0.743687f ),
      Point3F( 0.439922f, -0.864433f, -0.243359f ),
      Point3F( 0.177649f, 0.206919f, 0.962094f ),
      Point3F( 0.277107f, 0.948521f, 0.153361f ),
      Point3F( 0.507629f, 0.661918f, -0.551523f ),
      Point3F( -0.503110f, -0.579308f, -0.641313f ),
      Point3F( 0.600522f, 0.736495f, -0.311364f ),
      Point3F( -0.691096f, -0.715301f, -0.103592f ),
      Point3F( -0.041083f, -0.858497f, 0.511171f ),
      Point3F( 0.207773f, -0.480062f, -0.852274f ),
      Point3F( 0.795719f, 0.464614f, 0.388543f ),
      Point3F( -0.100433f, 0.495114f, -0.863004f ),
      Point3F( 0.703249f, 0.065157f, -0.707951f ),
      Point3F( -0.324171f, -0.941112f, 0.096024f ),
      Point3F( -0.134933f, -0.940212f, 0.312722f ),
      Point3F( -0.438240f, 0.752088f, -0.492249f ),
      Point3F( 0.964762f, -0.198855f, 0.172311f ),
      Point3F( -0.831799f, 0.196807f, 0.519015f ),
      Point3F( -0.508008f, 0.819902f, 0.263986f ),
      Point3F( 0.471075f, -0.001146f, 0.882092f ),
      Point3F( 0.919512f, 0.246162f, -0.306435f ),
      Point3F( -0.960050f, 0.279828f, -0.001187f ),
      Point3F( 0.110232f, -0.847535f, -0.519165f ),
      Point3F( 0.208229f, 0.697360f, 0.685806f ),
      Point3F( -0.199680f, -0.560621f, 0.803637f ),
      Point3F( 0.170135f, -0.679985f, -0.713214f ),
      Point3F( 0.758371f, -0.494907f, 0.424195f ),
      Point3F( 0.077734f, -0.755978f, 0.649965f ),
      Point3F( 0.612831f, -0.672475f, 0.414987f ),
      Point3F( 0.142776f, 0.836698f, -0.528726f ),
      Point3F( -0.765185f, 0.635778f, 0.101382f ),
      Point3F( 0.669873f, -0.419737f, 0.612447f ),
      Point3F( 0.593549f, 0.194879f, 0.780847f ),
      Point3F( 0.646930f, 0.752173f, 0.125368f ),
      Point3F( 0.837721f, 0.545266f, -0.030127f ),
      Point3F( 0.541505f, 0.768070f, 0.341820f ),
      Point3F( 0.760679f, -0.365715f, -0.536301f ),
      Point3F( 0.381516f, 0.640377f, 0.666605f ),
      Point3F( 0.565794f, -0.072415f, -0.821361f ),
      Point3F( -0.466072f, -0.401588f, 0.788356f ),
      Point3F( 0.987146f, 0.096290f, 0.127560f ),
      Point3F( 0.509709f, -0.688886f, -0.515396f ),
      Point3F( -0.135132f, -0.988046f, -0.074192f ),
      Point3F( 0.600499f, 0.476471f, -0.642166f ),
      Point3F( -0.732326f, -0.275320f, -0.622815f ),
      Point3F( -0.881141f, -0.470404f, 0.048078f ),
      Point3F( 0.051548f, 0.601042f, 0.797553f ),
      Point3F( 0.402027f, -0.763183f, 0.505891f ),
      Point3F( 0.404233f, -0.208288f, 0.890624f ),
      Point3F( -0.311793f, 0.343843f, 0.885752f ),
      Point3F( 0.098132f, -0.937014f, 0.335223f ),
      Point3F( 0.537158f, 0.830585f, -0.146936f ),
      Point3F( 0.725277f, 0.298172f, -0.620538f ),
      Point3F( -0.882025f, 0.342976f, -0.323110f ),
      Point3F( -0.668829f, 0.424296f, -0.610443f ),
      Point3F( -0.408835f, -0.476442f, -0.778368f ),
      Point3F( 0.809472f, 0.397249f, -0.432375f ),
      Point3F( -0.909184f, -0.205938f, -0.361903f ),
      Point3F( 0.866930f, -0.347934f, -0.356895f ),
      Point3F( 0.911660f, -0.141281f, -0.385897f ),
      Point3F( -0.431404f, -0.844074f, -0.318480f ),
      Point3F( -0.950593f, -0.073496f, 0.301614f ),
      Point3F( -0.719716f, 0.626915f, -0.298305f ),
      Point3F( -0.779887f, 0.617067f, -0.104899f ),
      Point3F( -0.475899f, -0.542630f, 0.692151f ),
      Point3F( 0.081952f, -0.157248f, -0.984153f ),
      Point3F( 0.923990f, -0.381662f, -0.024025f ),
      Point3F( -0.957998f, 0.120979f, -0.260008f ),
      Point3F( 0.306601f, 0.227975f, -0.924134f ),
      Point3F( -0.141244f, 0.989182f, 0.039601f ),
      Point3F( 0.077097f, 0.186288f, -0.979466f ),
      Point3F( -0.630407f, -0.259801f, 0.731499f ),
      Point3F( 0.718150f, 0.637408f, 0.279233f ),
      Point3F( 0.340946f, 0.110494f, 0.933567f ),
      Point3F( -0.396671f, 0.503020f, -0.767869f ),
      Point3F( 0.636943f, -0.245005f, 0.730942f ),
      Point3F( -0.849605f, -0.518660f, -0.095724f ),
      Point3F( -0.388203f, 0.105395f, 0.915527f ),
      Point3F( -0.280671f, -0.776541f, -0.564099f ),
      Point3F( -0.601680f, 0.215451f, -0.769131f ),
      Point3F( -0.660112f, -0.632371f, -0.405412f ),
      Point3F( 0.921096f, 0.284072f, 0.266242f ),
      Point3F( 0.074850f, -0.300846f, 0.950731f ),
      Point3F( 0.943952f, -0.067062f, 0.323198f ),
      Point3F( -0.917838f, -0.254589f, 0.304561f ),
      Point3F( 0.889843f, -0.409008f, 0.202219f ),
      Point3F( -0.565849f, 0.753721f, -0.334246f ),
      Point3F( 0.791460f, 0.555918f, -0.254060f ),
      Point3F( 0.261936f, 0.703590f, -0.660568f ),
      Point3F( -0.234406f, 0.952084f, 0.196444f ),
      Point3F( 0.111205f, 0.979492f, -0.168014f ),
      Point3F( -0.869844f, -0.109095f, -0.481113f ),
      Point3F( -0.337728f, -0.269701f, -0.901777f ),
      Point3F( 0.366793f, 0.408875f, -0.835634f ),
      Point3F( -0.098749f, 0.261316f, 0.960189f ),
      Point3F( -0.272379f, -0.847100f, 0.456324f ),
      Point3F( -0.319506f, 0.287444f, -0.902935f ),
      Point3F( 0.873383f, -0.294109f, 0.388203f ),
      Point3F( -0.088950f, 0.710450f, 0.698104f ),
      Point3F( 0.551238f, -0.786552f, 0.278340f ),
      Point3F( 0.724436f, -0.663575f, -0.186712f ),
      Point3F( 0.529741f, -0.606539f, 0.592861f ),
      Point3F( -0.949743f, -0.282514f, 0.134809f ),
      Point3F( 0.155047f, 0.419442f, -0.894443f ),
      Point3F( -0.562653f, -0.329139f, -0.758346f ),
      Point3F( 0.816407f, -0.576953f, 0.024576f ),
      Point3F( 0.178550f, -0.950242f, -0.255266f ),
      Point3F( 0.479571f, 0.706691f, 0.520192f ),
      Point3F( 0.391687f, 0.559884f, -0.730145f ),
      Point3F( 0.724872f, -0.205570f, -0.657496f ),
      Point3F( -0.663196f, -0.517587f, -0.540624f ),
      Point3F( -0.660054f, -0.122486f, -0.741165f ),
      Point3F( -0.531989f, 0.374711f, -0.759328f ),
      Point3F( 0.194979f, -0.059120f, 0.979024f )
};

U8 TSMesh::encodeNormal(const Point3F & normal)
{
   U8 bestIndex=0;
   F32 bestDot=-10E30f;
   for (U32 i=0; i<256; i++)
   {
      F32 dot = mDot(normal,smU8ToNormalTable[i]);
      if (dot>bestDot)
      {
         bestIndex = i;
         bestDot = dot;
      }
   }
   return bestIndex;
}

//-----------------------------------------------------
// TSMesh assemble from/ dissemble to memory buffer
//-----------------------------------------------------

#define alloc TSShape::alloc

TSMesh * TSMesh::assembleMesh(U32 meshType, bool skip)
{
   static TSMesh tempStandardMesh;
   static TSSkinMesh tempSkinMesh;
   static TSDecalMesh tempDecalMesh;
   static TSSortedMesh tempSortedMesh;

   bool justSize = skip || !alloc.allocShape32(0); // if this returns NULL, we're just sizing memory block

   // a little funny business because we pretend decals are derived from meshes
   S32 * ret = NULL;
   TSMesh * mesh = NULL;
   TSDecalMesh * decal = NULL;

   if (justSize)
   {
      switch (meshType)
      {
         case StandardMeshType :
         {
            ret = (S32*)&tempStandardMesh;
            mesh = &tempStandardMesh;
            alloc.allocShape32(sizeof(TSMesh)>>2);
            break;
         }
         case SkinMeshType     :
         {
            ret = (S32*)&tempSkinMesh;
            mesh = &tempSkinMesh;
            alloc.allocShape32(sizeof(TSSkinMesh)>>2);
            break;
         }
         case DecalMeshType    :
         {
            ret = (S32*)&tempDecalMesh;
            decal = &tempDecalMesh;
            alloc.allocShape32(sizeof(TSDecalMesh)>>2);
            break;
         }
         case SortedMeshType   :
         {
            ret = (S32*)&tempSortedMesh;
            mesh = &tempSortedMesh;
            alloc.allocShape32(sizeof(TSSortedMesh)>>2);
            break;
         }
      }
   }
   else
   {
      switch (meshType)
      {
         case StandardMeshType :
         {
            ret = alloc.allocShape32(sizeof(TSMesh)>>2);
            constructInPlace((TSMesh*)ret);
            mesh = (TSMesh*)ret;
            break;
         }
         case SkinMeshType     :
         {
            ret = alloc.allocShape32(sizeof(TSSkinMesh)>>2);
            constructInPlace((TSSkinMesh*)ret);
            mesh = (TSSkinMesh*)ret;
            break;
         }
         case DecalMeshType    :
         {
            ret = alloc.allocShape32(sizeof(TSDecalMesh)>>2);
            constructInPlace((TSDecalMesh*)ret);
            decal = (TSDecalMesh*)ret;
            break;
         }
         case SortedMeshType   :
         {
            ret = alloc.allocShape32(sizeof(TSSortedMesh)>>2);
            constructInPlace((TSSortedMesh*)ret);
            mesh = (TSSortedMesh*)ret;
            break;
         }
      }
   }

   alloc.setSkipMode(skip);

   if (mesh)
      mesh->assemble(skip);
   if (decal)
      decal->assemble(skip);

   alloc.setSkipMode(false);

   return (TSMesh*)ret;
}

void TSMesh::convertToTris(S16 * primitiveDataIn, S32 * primitiveMatIn, S16 * indicesIn,
                           S32 numPrimIn, S32 & numPrimOut, S32 & numIndicesOut,
                           S32 * primitivesOut, S16 * indicesOut)
{
   S32 prevMaterial = -99999;
   TSDrawPrimitive * newDraw = NULL;
   numPrimOut=0;
   numIndicesOut=0;
   for (S32 i=0; i<numPrimIn; i++)
   {
      S32 newMat = primitiveMatIn[i];
      newMat &= ~TSDrawPrimitive::TypeMask;
      if (newMat!=prevMaterial)
      {
         if (primitivesOut)
         {
            newDraw = (TSDrawPrimitive*) &primitivesOut[numPrimOut*2];
            newDraw->start = numIndicesOut;
            newDraw->numElements = 0;
            newDraw->matIndex = newMat | TSDrawPrimitive::Triangles;
         }
         numPrimOut++;
         prevMaterial = newMat;
      }
      U16 start = primitiveDataIn[i*2];
      U16 numElements = primitiveDataIn[i*2+1];

      // gonna depend on what kind of primitive it is...
      if ( (primitiveMatIn[i] & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Triangles)
      {
         for (S32 j=0; j<numElements; j+=3)
         {
            if (indicesOut)
            {
               indicesOut[numIndicesOut+0] = indicesIn[start+j+0];
               indicesOut[numIndicesOut+1] = indicesIn[start+j+1];
               indicesOut[numIndicesOut+2] = indicesIn[start+j+2];
            }
            if (newDraw)
               newDraw->numElements += 3;
            numIndicesOut += 3;
         }
      }
      else
      {
         U32 idx0 = indicesIn[start + 0];
         U32 idx1;
         U32 idx2 = indicesIn[start + 1];
         U32 * nextIdx = &idx1;
         for (S32 j=2; j<numElements; j++)
         {
            *nextIdx = idx2;
            nextIdx = (U32*) ( (dsize_t)nextIdx ^ (dsize_t)&idx0 ^ (dsize_t)&idx1);
            idx2 = indicesIn[start + j];
            if (idx0==idx1 || idx1==idx2 || idx2==idx0)
               continue;
            if (indicesOut)
            {
               indicesOut[numIndicesOut+0] = idx0;
               indicesOut[numIndicesOut+1] = idx1;
               indicesOut[numIndicesOut+2] = idx2;
            }
            if (newDraw)
               newDraw->numElements += 3;
            numIndicesOut += 3;
         }
      }
   }
}

void unwindStrip(S16 * indices, S32 numElements, Vector<S16> & triIndices)
{
   U32 idx0 = indices[0];
   U32 idx1;
   U32 idx2 = indices[1];
   U32 * nextIdx = &idx1;
   for (S32 j=2; j<numElements; j++)
   {
      *nextIdx = idx2;
      nextIdx = (U32*) ( (dsize_t)nextIdx ^ (dsize_t)&idx0 ^ (dsize_t)&idx1);
      idx2 = indices[j];
      if (idx0==idx1 || idx1==idx2 || idx2==idx0)
         continue;
      triIndices.push_back(idx0);
      triIndices.push_back(idx1);
      triIndices.push_back(idx2);
   }
}

void TSMesh::convertToSingleStrip(S16 * primitiveDataIn, S32 * primitiveMatIn, S16 * indicesIn, S32 numPrimIn,
                                  S32 & numPrimOut, S32 & numIndicesOut,
                                  S32 * primitivesOut, S16 * indicesOut)
{
   S32 prevMaterial = -99999;
   TSDrawPrimitive * newDraw = NULL;
   TSDrawPrimitive * newTris = NULL;
   Vector<S16> triIndices;
   S32 curDrawOut = 0;
   numPrimOut=0;
   numIndicesOut=0;
   for (S32 i=0; i<numPrimIn; i++)
   {
      S32 newMat = primitiveMatIn[i];
      if (newMat!=prevMaterial)
      {
         // before adding the new primitive, transfer triangle indices
         if (triIndices.size())
         {
            if (newTris && indicesOut)
            {
               newTris->start = numIndicesOut;
               newTris->numElements = triIndices.size();
               dMemcpy(&indicesOut[numIndicesOut],triIndices.address(),triIndices.size()*sizeof(U16));
            }
            numIndicesOut += triIndices.size();
            triIndices.clear();
            newTris = NULL;
         }

         if (primitivesOut)
         {
            newDraw = (TSDrawPrimitive*) &primitivesOut[numPrimOut*2];
            newDraw->start = numIndicesOut;
            newDraw->numElements = 0;
            newDraw->matIndex = newMat;
         }
         numPrimOut++;
         curDrawOut = 0;
         prevMaterial = newMat;
      }
      U16 start = primitiveDataIn[i*2];
      U16 numElements = primitiveDataIn[i*2+1];

      // gonna depend on what kind of primitive it is...
      // from above we know it's the same kind as the one we're building...
      if ( (primitiveMatIn[i] & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Triangles)
      {
         // triangles primitive...add to it
         for (S32 j=0; j<numElements; j+=3)
         {
            if (indicesOut)
            {
               indicesOut[numIndicesOut+0] = indicesIn[start+j+0];
               indicesOut[numIndicesOut+1] = indicesIn[start+j+1];
               indicesOut[numIndicesOut+2] = indicesIn[start+j+2];
            }
            if (newDraw)
               newDraw->numElements += 3;
            numIndicesOut += 3;
         }
      }
      else
      {
         // strip primitive...
         // if numElements less than smSmallestStripSize, add to triangles...
         if (numElements<smMinStripSize+2)
         {
            // put triangle indices aside until material changes...
            if (triIndices.empty())
            {
               // set up for new triangle primitive and add it if we are copying data right now
               if (primitivesOut)
               {
                  newTris = (TSDrawPrimitive*) &primitivesOut[numPrimOut*2];
                  newTris->matIndex  = newMat;
                  newTris->matIndex &= ~(TSDrawPrimitive::Triangles|TSDrawPrimitive::Strip);
                  newTris->matIndex |= TSDrawPrimitive::Triangles;
               }
               numPrimOut++;
            }
            unwindStrip(indicesIn+start,numElements,triIndices);
         }
         else
         {
            // strip primitive...add to it
            if (indicesOut)
            {
               if (curDrawOut&1)
               {
                  indicesOut[numIndicesOut+0] = indicesOut[numIndicesOut-1];
                  indicesOut[numIndicesOut+1] = indicesOut[numIndicesOut-1];
                  indicesOut[numIndicesOut+2] = indicesIn[start];
                  dMemcpy(indicesOut+numIndicesOut+3,indicesIn+start,2*numElements);
               }
               else if (curDrawOut)
               {
                  indicesOut[numIndicesOut+0] = indicesOut[numIndicesOut-1];
                  indicesOut[numIndicesOut+1] = indicesIn[start];
                  dMemcpy(indicesOut+numIndicesOut+2,indicesIn+start,2*numElements);
               }
               else
                  dMemcpy(indicesOut+numIndicesOut,indicesIn+start,2*numElements);
            }
            S32 added = numElements;
            added += curDrawOut ? (curDrawOut&1 ? 3 : 2) : 0;
            if (newDraw)
               newDraw->numElements += added;
            numIndicesOut += added;
            curDrawOut += added;
         }
      }
   }
   // spit out tris before leaving
   // before adding the new primitive, transfer triangle indices
   if (triIndices.size())
   {
      if (newTris && indicesOut)
      {
         newTris->start = numIndicesOut;
         newTris->numElements = triIndices.size();
         dMemcpy(&indicesOut[numIndicesOut],triIndices.address(),triIndices.size()*sizeof(U16));
      }
      numIndicesOut += triIndices.size();
      triIndices.clear();
      newTris = NULL;
   }
}

// this method does none of the converting that the above methods do, except that small strips are converted
// to triangle lists...
void TSMesh::leaveAsMultipleStrips(S16 * primitiveDataIn, S32 * primitiveMatIn, S16 * indicesIn, S32 numPrimIn,
                                   S32 & numPrimOut, S32 & numIndicesOut,
                                   S32 * primitivesOut, S16 * indicesOut)
{
   S32 prevMaterial = -99999;
   TSDrawPrimitive * newDraw = NULL;
   Vector<S16> triIndices;
   numPrimOut=0;
   numIndicesOut=0;
   for (S32 i=0; i<numPrimIn; i++)
   {
      S32 newMat = primitiveMatIn[i];

      U16 start = primitiveDataIn[i*2];
      U16 numElements = primitiveDataIn[i*2+1];

      if (newMat!=prevMaterial && triIndices.size())
      {
         // material just changed and we have triangles lying around
         // add primitive and indices for triangles and clear triIndices
         if (indicesOut)
         {
            TSDrawPrimitive * newTris = (TSDrawPrimitive*) &primitivesOut[numPrimOut*2];
            newTris->matIndex = prevMaterial;
            newTris->matIndex &= ~(TSDrawPrimitive::Triangles|TSDrawPrimitive::Strip);
            newTris->matIndex |= TSDrawPrimitive::Triangles;
            newTris->start = numIndicesOut;
            newTris->numElements = triIndices.size();
            dMemcpy(&indicesOut[numIndicesOut],triIndices.address(),triIndices.size()*sizeof(U16));
         }
         numPrimOut++;
         numIndicesOut += triIndices.size();
         triIndices.clear();
      }

      // this is a little convoluted because this code was adapted from convertToSingleStrip
      // but we will need a new primitive only if it is a triangle primitive coming in
      // or we have more elements than the min strip size...
      if ( (primitiveMatIn[i] & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Triangles || numElements>=smMinStripSize+2)
      {
         if (primitivesOut)
         {
            newDraw = (TSDrawPrimitive*) &primitivesOut[numPrimOut*2];
            newDraw->start = numIndicesOut;
            newDraw->numElements = 0;
            newDraw->matIndex = newMat;
         }
         numPrimOut++;
      }
      prevMaterial = newMat;

      // gonna depend on what kind of primitive it is...
      // from above we know it's the same kind as the one we're building...
      if ( (primitiveMatIn[i] & TSDrawPrimitive::TypeMask) == TSDrawPrimitive::Triangles)
      {
         // triangles primitive...add to it
         for (S32 j=0; j<numElements; j+=3)
         {
            if (indicesOut)
            {
               indicesOut[numIndicesOut+0] = indicesIn[start+j+0];
               indicesOut[numIndicesOut+1] = indicesIn[start+j+1];
               indicesOut[numIndicesOut+2] = indicesIn[start+j+2];
            }
            if (newDraw)
               newDraw->numElements += 3;
            numIndicesOut += 3;
         }
      }
      else
      {
         // strip primitive...
         // if numElements less than smSmallestStripSize, add to triangles...
         if (numElements<smMinStripSize+2)
            // put triangle indices aside until material changes...
            unwindStrip(indicesIn+start,numElements,triIndices);
         else
         {
            // strip primitive...add to it
            if (indicesOut)
               dMemcpy(indicesOut+numIndicesOut,indicesIn+start,2*numElements);
            if (newDraw)
               newDraw->numElements = numElements;
            numIndicesOut += numElements;
         }
      }
   }
   // spit out tris before leaving
   if (triIndices.size())
   {
      // material just changed and we have triangles lying around
      // add primitive and indices for triangles and clear triIndices
      if (indicesOut)
      {
         TSDrawPrimitive * newTris = (TSDrawPrimitive*) &primitivesOut[numPrimOut*2];
         newTris->matIndex = prevMaterial;
         newTris->matIndex &= ~(TSDrawPrimitive::Triangles|TSDrawPrimitive::Strip);
         newTris->matIndex |= TSDrawPrimitive::Triangles;
         newTris->start = numIndicesOut;
         newTris->numElements = triIndices.size();
         dMemcpy(&indicesOut[numIndicesOut],triIndices.address(),triIndices.size()*sizeof(U16));
      }
      numPrimOut++;
      numIndicesOut += triIndices.size();
      triIndices.clear();
   }
}

// This method retrieves data that is shared (or possibly shared) between different meshes.
// This adds an extra step to the copying of data from the memory buffer to the shape data buffer.
// If we have no parentMesh, then we either return a pointer to the data in the memory buffer
// (in the case that we skip this mesh) or copy the data into the shape data buffer and return
// that pointer (in the case that we don't skip this mesh).
// If we do have a parent mesh, then we return a pointer to the data in the shape buffer,
// copying the data in there ourselves if our parent didn't already do it (i.e., if it was skipped).
S32 * TSMesh::getSharedData32(S32 parentMesh, S32 size, S32 ** source, bool skip)
{
   S32 * ptr;
   if(parentMesh<0)
      ptr = skip ? alloc.getPointer32(size) : alloc.copyToShape32(size);
   else
   {
      ptr = source[parentMesh];
      // if we skipped the previous mesh (and we're not skipping this one) then
      // we still need to copy points into the shape...
      if (!smDataCopied[parentMesh] && !skip)
      {
         S32 * tmp = ptr;
         ptr = alloc.allocShape32(size);
         if (ptr && tmp)
            dMemcpy(ptr,tmp,size*sizeof(S32));
      }
   }
   return ptr;
}

S8 * TSMesh::getSharedData8(S32 parentMesh, S32 size, S8 ** source, bool skip)
{
   S8 * ptr;
   if(parentMesh<0)
      ptr = skip ? alloc.getPointer8(size) : alloc.copyToShape8(size);
   else
   {
      ptr = source[parentMesh];
      // if we skipped the previous mesh (and we're not skipping this one) then
      // we still need to copy points into the shape...
      if (!smDataCopied[parentMesh] && !skip)
      {
         S8 * tmp = ptr;
         ptr = alloc.allocShape8(size);
         if (ptr && tmp)
            dMemcpy(ptr,tmp,size*sizeof(S32));
      }
   }
   return ptr;
}

void TSMesh::assemble(bool skip)
{
   alloc.checkGuard();

   numFrames = alloc.get32();
   numMatFrames = alloc.get32();
   parentMesh = alloc.get32();
   alloc.get32((S32*)&mBounds,6);
   alloc.get32((S32*)&mCenter,3);
   mRadius = (F32)alloc.get32();

   S32 numVerts = alloc.get32();
   S32 * ptr32 = getSharedData32(parentMesh,3*numVerts,(S32**)smVertsList.address(),skip);
   verts.set((Point3F*)ptr32,numVerts);

   S32 numTVerts = alloc.get32();
   ptr32 = getSharedData32(parentMesh,2*numTVerts,(S32**)smTVertsList.address(),skip);
   tverts.set((Point2F*)ptr32,numTVerts);

   S8 * ptr8;
   if (TSShape::smReadVersion>21 && TSMesh::smUseEncodedNormals)
   {
      // we have encoded normals and we want to use them...

      if (parentMesh<0)
         alloc.getPointer32(numVerts*3); // advance past norms, don't use
      norms.set(NULL,0);

      ptr8 = getSharedData8(parentMesh,numVerts,(S8**)smEncodedNormsList.address(),skip);
      encodedNorms.set(ptr8,numVerts);
   }
   else if (TSShape::smReadVersion>21)
   {
      // we have encoded normals but we don't want to use them...

      ptr32 = getSharedData32(parentMesh,3*numVerts,(S32**)smNormsList.address(),skip);
      norms.set((Point3F*)ptr32,numVerts);

      if (parentMesh<0)
         alloc.getPointer8(numVerts); // advance past encoded normls, don't use
      encodedNorms.set(NULL,0);
   }
   else
   {
      // no encoded normals...

      ptr32 = getSharedData32(parentMesh,3*numVerts,(S32**)smNormsList.address(),skip);
      norms.set((Point3F*)ptr32,numVerts);
      encodedNorms.set(NULL,0);
   }

   // copy the primitives and indices...how we do this depends on what
   // form we want them in when copied...just get pointers to data for now
   S32 szPrim = alloc.get32();
   S16 * prim16 = alloc.getPointer16(szPrim*2);
   S32 * prim32 = alloc.getPointer32(szPrim);
   S32 szInd = alloc.get32();
   S16 * ind16 = alloc.getPointer16(szInd);

   // count then copy...
   S32 cpyPrim = szPrim, cpyInd = szInd;
   if (smUseTriangles)
      convertToTris(prim16,prim32,ind16,szPrim,cpyPrim,cpyInd,NULL,NULL);
   else if (smUseOneStrip)
      convertToSingleStrip(prim16,prim32,ind16,szPrim,cpyPrim,cpyInd,NULL,NULL);
   else
      leaveAsMultipleStrips(prim16,prim32,ind16,szPrim,cpyPrim,cpyInd,NULL,NULL);
   ptr32 = alloc.allocShape32(2*cpyPrim);
   S16 * ptr16 = alloc.allocShape16(cpyInd);
   alloc.align32();
   S32 chkPrim = szPrim, chkInd = szInd;
   if (smUseTriangles)
      convertToTris(prim16,prim32,ind16,szPrim,chkPrim,chkInd,ptr32,ptr16);
   else if (smUseOneStrip)
      convertToSingleStrip(prim16,prim32,ind16,szPrim,chkPrim,chkInd,ptr32,ptr16);
   else
      leaveAsMultipleStrips(prim16,prim32,ind16,szPrim,chkPrim,chkInd,ptr32,ptr16);
   AssertFatal(chkPrim==cpyPrim && chkInd==cpyInd,"TSMesh::primitive conversion");
   primitives.set(ptr32,cpyPrim);
   indices.set(ptr16,cpyInd);

   S32 sz = alloc.get32();
   ptr16 = alloc.copyToShape16(sz);
   alloc.align32();
   mergeIndices.set(ptr16,sz);

   vertsPerFrame = alloc.get32();
   U32 flags = (U32)alloc.get32();
   if (encodedNorms.size())
      flags |= UseEncodedNormals;
   setFlags(flags);

   alloc.checkGuard();

   if (alloc.allocShape32(0) && TSShape::smReadVersion<19)
      // only do this if we copied the data...
      computeBounds();
}

void TSMesh::disassemble()
{
   alloc.setGuard();

   alloc.set32(numFrames);
   alloc.set32(numMatFrames);
   alloc.set32(parentMesh);
   alloc.copyToBuffer32((S32*)&mBounds,6);
   alloc.copyToBuffer32((S32*)&mCenter,3);
   alloc.set32((S32)mRadius);

   // verts...
   alloc.set32(verts.size());
   if (parentMesh<0)
      // if no parent mesh, then save off our verts
      alloc.copyToBuffer32((S32*)verts.address(),3*verts.size());

   // tverts...
   alloc.set32(tverts.size());
   if (parentMesh<0)
      // if no parent mesh, then save off our tverts
      alloc.copyToBuffer32((S32*)tverts.address(),2*tverts.size());

   // norms...
   if (parentMesh<0)
      // if no parent mesh, then save off our norms
      alloc.copyToBuffer32((S32*)norms.address(),3*norms.size()); // norms.size()==verts.size() or error...

   // encoded norms...
   if (parentMesh<0)
   {
      // if no parent mesh, compute encoded normals and copy over
      for (S32 i=0; i<norms.size(); i++)
      {
         U8 normIdx = encodedNorms.size() ? encodedNorms[i] : encodeNormal(norms[i]);
         alloc.copyToBuffer8((S8*)&normIdx,1);
      }
   }

   // primitives...
   alloc.set32(primitives.size());
   for (S32 i=0; i<primitives.size(); i++)
   {
      alloc.copyToBuffer16((S16*)&primitives[i],2);
      alloc.copyToBuffer32(((S32*)&primitives[i])+1,1);
   }

   // indices...
   alloc.set32(indices.size());
   alloc.copyToBuffer16((S16*)indices.address(),indices.size());

   // merge indices...
   alloc.set32(mergeIndices.size());
   alloc.copyToBuffer16((S16*)mergeIndices.address(),mergeIndices.size());

   // small stuff...
   alloc.set32(vertsPerFrame);
   alloc.set32(getFlags());

   alloc.setGuard();
}

//-----------------------------------------------------
// TSSkinMesh assemble from/ dissemble to memory buffer
//-----------------------------------------------------

void TSSkinMesh::assemble(bool skip)
{
   // avoid a crash on computeBounds...
   initialVerts.set(NULL,0);

   TSMesh::assemble(skip);

   S32 sz = alloc.get32();
   S32 numVerts = sz;
   S32 * ptr32 = getSharedData32(parentMesh,3*numVerts,(S32**)smVertsList.address(),skip);
   initialVerts.set((Point3F*)ptr32,sz);

   S8 * ptr8;
   if (TSShape::smReadVersion>21 && TSMesh::smUseEncodedNormals)
   {
      // we have encoded normals and we want to use them...
      if (parentMesh<0)
         alloc.getPointer32(numVerts*3); // advance past norms, don't use
      initialNorms.set(NULL,0);

      ptr8 = getSharedData8(parentMesh,numVerts,(S8**)smEncodedNormsList.address(),skip);
      encodedNorms.set(ptr8,numVerts);
      // Note: we don't set the encoded normals flag because we handle them in updateSkin and
      //       hide the fact that we are using them from base class (TSMesh)
   }
   else if (TSShape::smReadVersion>21)
   {
      // we have encoded normals but we don't want to use them...
      ptr32 = getSharedData32(parentMesh,3*numVerts,(S32**)smNormsList.address(),skip);
      initialNorms.set((Point3F*)ptr32,numVerts);

      if (parentMesh<0)
         alloc.getPointer8(numVerts); // advance past encoded normls, don't use
      encodedNorms.set(NULL,0);
   }
   else
   {
      // no encoded normals...
      ptr32 = getSharedData32(parentMesh,3*numVerts,(S32**)smNormsList.address(),skip);
      initialNorms.set((Point3F*)ptr32,numVerts);
      encodedNorms.set(NULL,0);
   }

   sz = alloc.get32();
   ptr32 = getSharedData32(parentMesh,16*sz,(S32**)smInitTransformList.address(),skip);
   initialTransforms.set(ptr32,sz);

   sz = alloc.get32();
   ptr32 = getSharedData32(parentMesh,sz,(S32**)smVertexIndexList.address(),skip);
   vertexIndex.set(ptr32,sz);

   ptr32 = getSharedData32(parentMesh,sz,(S32**)smBoneIndexList.address(),skip);
   boneIndex.set(ptr32,sz);

   ptr32 = getSharedData32(parentMesh,sz,(S32**)smWeightList.address(),skip);
   weight.set((F32*)ptr32,sz);

   sz = alloc.get32();
   ptr32 = getSharedData32(parentMesh,sz,(S32**)smNodeIndexList.address(),skip);
   nodeIndex.set(ptr32,sz);

   alloc.checkGuard();

   if (alloc.allocShape32(0) && TSShape::smReadVersion<19)
      // only do this if we copied the data...
      TSMesh::computeBounds();
}

void TSSkinMesh::disassemble()
{
   TSMesh::disassemble();

   alloc.set32(initialVerts.size());
   // if we have no parent mesh, then save off our verts & norms
   if (parentMesh<0)
   {
      alloc.copyToBuffer32((S32*)initialVerts.address(),3*initialVerts.size());

      // no longer do this here...let tsmesh handle this
      alloc.copyToBuffer32((S32*)initialNorms.address(),3*initialNorms.size());

      // if no parent mesh, compute encoded normals and copy over
      for (S32 i=0; i<initialNorms.size(); i++)
      {
         U8 normIdx = encodedNorms.size() ? encodedNorms[i] : encodeNormal(initialNorms[i]);
         alloc.copyToBuffer8((S8*)&normIdx,1);
      }
   }

   alloc.set32(initialTransforms.size());
   if (parentMesh<0)
      alloc.copyToBuffer32((S32*)initialTransforms.address(),initialTransforms.size()*16);

   alloc.set32(vertexIndex.size());
   if (parentMesh<0)
   {
      alloc.copyToBuffer32((S32*)vertexIndex.address(),vertexIndex.size());

      alloc.copyToBuffer32((S32*)boneIndex.address(),boneIndex.size());

      alloc.copyToBuffer32((S32*)weight.address(),weight.size());
   }

   alloc.set32(nodeIndex.size());
   if (parentMesh<0)
      alloc.copyToBuffer32((S32*)nodeIndex.address(),nodeIndex.size());

   alloc.setGuard();
}