C++ LLVector4a::setCross3方法代码示例

/*
For each vertex, given:
	B - binormal
	T - tangent
	N - normal
	P - position

The resulting texture coordinate <u,v> is:

	u = 2(B dot P)
	v = 2(T dot P)
*/
void planarProjection(LLVector2 &tc, const LLVector4a& normal,
					  const LLVector4a &center, const LLVector4a& vec)
{	
	LLVector4a binormal;
	F32 d = normal[0];

	if (d >= 0.5f || d <= -0.5f)
	{
		if (d < 0)
		{
			binormal.set(0,-1,0);
		}
		else
		{
			binormal.set(0, 1, 0);
		}
	}
	else
	{
        if (normal[1] > 0)
		{
			binormal.set(-1,0,0);
		}
		else
		{
			binormal.set(1,0,0);
		}
	}
	LLVector4a tangent;
	tangent.setCross3(binormal,normal);

	tc.mV[1] = -((tangent.dot3(vec).getF32())*2 - 0.5f);
	tc.mV[0] = 1.0f+((binormal.dot3(vec).getF32())*2 - 0.5f);
}

void LLVOPartGroup::getGeometry(const LLViewerPart& part,
								LLStrider<LLVector4a>& verticesp)
{
	if (part.mFlags & LLPartData::LL_PART_RIBBON_MASK)
	{
		LLVector4a axis, pos, paxis, ppos;
		F32 scale, pscale;

		pos.load3(part.mPosAgent.mV);
		axis.load3(part.mAxis.mV);
		scale = part.mScale.mV[0];
		
		if (part.mParent)
		{
			ppos.load3(part.mParent->mPosAgent.mV);
			paxis.load3(part.mParent->mAxis.mV);
			pscale = part.mParent->mScale.mV[0];
		}
		else
		{ //use source object as position
			
			if (part.mPartSourcep->mSourceObjectp.notNull())
			{
				LLVector3 v = LLVector3(0,0,1);
				v *= part.mPartSourcep->mSourceObjectp->getRenderRotation();
				paxis.load3(v.mV);
				ppos.load3(part.mPartSourcep->mPosAgent.mV);
				pscale = part.mStartScale.mV[0];
			}
			else
			{ //no source object, no parent, nothing to draw
				ppos = pos;
				pscale = scale;
				paxis = axis;
			}
		}

		LLVector4a p0, p1, p2, p3;

		scale *= 0.5f;
		pscale *= 0.5f;

		axis.mul(scale);
		paxis.mul(pscale);

		p0.setAdd(pos, axis);
		p1.setSub(pos,axis);
		p2.setAdd(ppos, paxis);
		p3.setSub(ppos, paxis);

		(*verticesp++) = p2;
		(*verticesp++) = p3;
		(*verticesp++) = p0;
		(*verticesp++) = p1;
	}
	else
	{
		LLVector4a part_pos_agent;
		part_pos_agent.load3(part.mPosAgent.mV);
		LLVector4a camera_agent;
	camera_agent.load3(getCameraPosition().mV); 
	LLVector4a at;
	at.setSub(part_pos_agent, camera_agent);
	LLVector4a up(0, 0, 1);
	LLVector4a right;

	right.setCross3(at, up);
	right.normalize3fast();
	up.setCross3(right, at);
	up.normalize3fast();

	if (part.mFlags & LLPartData::LL_PART_FOLLOW_VELOCITY_MASK)
	{
		LLVector4a normvel;
		normvel.load3(part.mVelocity.mV);
		normvel.normalize3fast();
		LLVector2 up_fracs;
		up_fracs.mV[0] = normvel.dot3(right).getF32();
		up_fracs.mV[1] = normvel.dot3(up).getF32();
		up_fracs.normalize();
		LLVector4a new_up;
		LLVector4a new_right;

		//new_up = up_fracs.mV[0] * right + up_fracs.mV[1]*up;
		LLVector4a t = right;
		t.mul(up_fracs.mV[0]);
		new_up = up;
		new_up.mul(up_fracs.mV[1]);
		new_up.add(t);

		//new_right = up_fracs.mV[1] * right - up_fracs.mV[0]*up;
		t = right;
		t.mul(up_fracs.mV[1]);
		new_right = up;
		new_right.mul(up_fracs.mV[0]);
		t.sub(new_right);

		up = new_up;
		right = t;
		up.normalize3fast();
//.........这里部分代码省略.........

void LLVOClouds::getGeometry(S32 idx,
								LLStrider<LLVector4a>& verticesp,
								LLStrider<LLVector3>& normalsp, 
								LLStrider<LLVector2>& texcoordsp,
								LLStrider<LLColor4U>& colorsp, 
								LLStrider<U16>& indicesp)
{

	if (idx >= mCloudGroupp->getNumPuffs())
	{
		return;
	}

	LLDrawable* drawable = mDrawable;
	LLFace *facep = drawable->getFace(idx);

	if (!facep->hasGeometry())
	{
		return;
	}
	

	const LLCloudPuff &puff = mCloudGroupp->getPuff(idx);

	LLColor4 float_color(LLColor3(gSky.getSunDiffuseColor() + gSky.getSunAmbientColor()),puff.getAlpha());
	LLColor4U color;
	color.setVec(float_color);
	facep->setFaceColor(float_color);
	
	U32 vert_offset = facep->getGeomIndex();
		
	LLVector4a part_pos_agent;
	part_pos_agent.load3(facep->mCenterLocal.mV);	
	LLVector4a at;
	at.load3(LLViewerCamera::getInstance()->getAtAxis().mV);
	LLVector4a up(0, 0, 1);
	LLVector4a right;

	right.setCross3(at, up);
	right.normalize3fast();
	up.setCross3(right, at);
	up.normalize3fast();
	right.mul(0.5f*CLOUD_PUFF_WIDTH);
	up.mul(0.5f*CLOUD_PUFF_HEIGHT);
		

	LLVector3 normal(0.f,0.f,-1.f);

	//HACK -- the verticesp->mV[3] = 0.f here are to set the texture index to 0 (particles don't use texture batching, maybe they should)
	// this works because there is actually a 4th float stored after the vertex position which is used as a texture index
	// also, somebody please VECTORIZE THIS

	LLVector4a ppapu;
	LLVector4a ppamu;
	
	ppapu.setAdd(part_pos_agent, up);
	ppamu.setSub(part_pos_agent, up);
	
	verticesp->setSub(ppapu, right);
	(*verticesp++).getF32ptr()[3] = 0.f;
	verticesp->setSub(ppamu, right);
	(*verticesp++).getF32ptr()[3] = 0.f;
	verticesp->setAdd(ppapu, right);
	(*verticesp++).getF32ptr()[3] = 0.f;
	verticesp->setAdd(ppamu, right);
	(*verticesp++).getF32ptr()[3] = 0.f;

	// *verticesp++ = puff_pos_agent - right + up;
	// *verticesp++ = puff_pos_agent - right - up;
	// *verticesp++ = puff_pos_agent + right + up;
	// *verticesp++ = puff_pos_agent + right - up;

	*colorsp++ = color;
	*colorsp++ = color;
	*colorsp++ = color;
	*colorsp++ = color;

	*texcoordsp++ = LLVector2(0.f, 1.f);
	*texcoordsp++ = LLVector2(0.f, 0.f);
	*texcoordsp++ = LLVector2(1.f, 1.f);
	*texcoordsp++ = LLVector2(1.f, 0.f);

	*normalsp++   = normal;
	*normalsp++   = normal;
	*normalsp++   = normal;
	*normalsp++   = normal;

	*indicesp++ = vert_offset + 0;
	*indicesp++ = vert_offset + 1;
	*indicesp++ = vert_offset + 2;

	*indicesp++ = vert_offset + 1;
	*indicesp++ = vert_offset + 3;
	*indicesp++ = vert_offset + 2;
}

void LLPolyMorphTarget::apply( ESex avatar_sex )
{
	if (!mMorphData || mNumMorphMasksPending > 0)
	{
		return;
	}

	LL_RECORD_BLOCK_TIME(FTM_APPLY_MORPH_TARGET);

	mLastSex = avatar_sex;

	// Check for NaN condition (NaN is detected if a variable doesn't equal itself.
	if (mCurWeight != mCurWeight)
	{
		mCurWeight = 0.0;
	}
	if (mLastWeight != mLastWeight)
	{
		mLastWeight = mCurWeight+.001;
	}

	// perform differential update of morph
	F32 delta_weight = ( getSex() & avatar_sex ) ? (mCurWeight - mLastWeight) : (getDefaultWeight() - mLastWeight);
	// store last weight
	mLastWeight += delta_weight;

	if (delta_weight != 0.f)
	{
		llassert(!mMesh->isLOD());
		LLVector4a *coords = mMesh->getWritableCoords();

		LLVector4a *scaled_normals = mMesh->getScaledNormals();
		LLVector4a *normals = mMesh->getWritableNormals();

		LLVector4a *scaled_binormals = mMesh->getScaledBinormals();
		LLVector4a *binormals = mMesh->getWritableBinormals();

		LLVector4a *clothing_weights = mMesh->getWritableClothingWeights();
		LLVector2 *tex_coords = mMesh->getWritableTexCoords();

		F32 *maskWeightArray = (mVertMask) ? mVertMask->getMorphMaskWeights() : NULL;

		for(U32 vert_index_morph = 0; vert_index_morph < mMorphData->mNumIndices; vert_index_morph++)
		{
			S32 vert_index_mesh = mMorphData->mVertexIndices[vert_index_morph];

			F32 maskWeight = 1.f;
			if (maskWeightArray)
			{
				maskWeight = maskWeightArray[vert_index_morph];
			}


			LLVector4a pos = mMorphData->mCoords[vert_index_morph];
			pos.mul(delta_weight*maskWeight);
			coords[vert_index_mesh].add(pos);

			if (getInfo()->mIsClothingMorph && clothing_weights)
			{
				LLVector4a clothing_offset = mMorphData->mCoords[vert_index_morph];
				clothing_offset.mul(delta_weight * maskWeight);
				LLVector4a* clothing_weight = &clothing_weights[vert_index_mesh];
				clothing_weight->add(clothing_offset);
				clothing_weight->getF32ptr()[VW] = maskWeight;
			}

			// calculate new normals based on half angles
			LLVector4a norm = mMorphData->mNormals[vert_index_morph];
			norm.mul(delta_weight*maskWeight*NORMAL_SOFTEN_FACTOR);
			scaled_normals[vert_index_mesh].add(norm);
			norm = scaled_normals[vert_index_mesh];

			// guard against degenerate input data before we create NaNs below!
			//
			norm.normalize3fast();
			normals[vert_index_mesh] = norm;

			// calculate new binormals
			LLVector4a binorm = mMorphData->mBinormals[vert_index_morph];

			// guard against degenerate input data before we create NaNs below!
			//
			if (!binorm.isFinite3() || (binorm.dot3(binorm).getF32() <= F_APPROXIMATELY_ZERO))
			{
				binorm.set(1,0,0,1);
			}

			binorm.mul(delta_weight*maskWeight*NORMAL_SOFTEN_FACTOR);
			scaled_binormals[vert_index_mesh].add(binorm);
			LLVector4a tangent;
			tangent.setCross3(scaled_binormals[vert_index_mesh], norm);
			LLVector4a& normalized_binormal = binormals[vert_index_mesh];

			normalized_binormal.setCross3(norm, tangent); 
			normalized_binormal.normalize3fast();
			
			tex_coords[vert_index_mesh] += mMorphData->mTexCoords[vert_index_morph] * delta_weight * maskWeight;
		}

		// now apply volume changes
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	// Because meshes are set by continually updating morph weights
	// there is no easy way to reapply the morphs, so we just compute
	// the change in this morph and apply that appropriately weighted.

	for( morph_index = 0; morph_index < mNumIndices; morph_index++)
	{
		vert_index = mVertexIndices[morph_index];

		delta_coords[vert_index].sub(	mCoords[morph_index]);
		delta_normals[vert_index].sub(	mNormals[morph_index]);
		delta_binormals[vert_index].sub(mBinormals[morph_index]);
		delta_tex_coords[vert_index] -= mTexCoords[morph_index];
	}

	//-------------------------------------------------------------------------
	// Update all avatars
	//-------------------------------------------------------------------------

	std::vector< LLCharacter* >::iterator avatar_it;
	for(avatar_it = LLCharacter::sInstances.begin(); avatar_it != LLCharacter::sInstances.end(); ++avatar_it)
	{
		LLVOAvatar* avatarp = (LLVOAvatar*)*avatar_it;

		LLPolyMorphTarget* param = (LLPolyMorphTarget*) avatarp->getVisualParam(mName.c_str());
		if (!param)
		{
			continue;
		}

		F32 weight = param->getLastWeight();
		if (weight == 0.0f)
		{
			continue;
		}

		LLPolyMesh* mesh = avatarp->getMesh(mMesh);
		if (!mesh)
		{
			continue;
		}

		// If we have a vertex mask, just remove it.  It will be recreated.
		/*if (param->undoMask(TRUE))
		{
			continue;
		}*/

		LLVector4a *mesh_coords           = mesh->getWritableCoords();
		LLVector4a *mesh_normals          = mesh->getWritableNormals();
		LLVector4a *mesh_binormals        = mesh->getWritableBinormals();
		LLVector2 *mesh_tex_coords        = mesh->getWritableTexCoords();
		LLVector4a *mesh_scaled_normals   = mesh->getScaledNormals();
		LLVector4a *mesh_scaled_binormals = mesh->getScaledBinormals();

		for( vert_index = 0; vert_index < nverts; vert_index++)
		{
			delta_coords[vert_index].mul(weight);
			mesh_coords[vert_index].add(delta_coords[vert_index]);

			mesh_tex_coords[vert_index]       += delta_tex_coords[vert_index] * weight;

			delta_normals[vert_index].mul(weight * NORMAL_SOFTEN_FACTOR);
			mesh_scaled_normals[vert_index].add(delta_normals[vert_index]);
			
			LLVector4a normalized_normal       = mesh_scaled_normals[vert_index];
			normalized_normal.normalize3();
			mesh_normals[vert_index]           = normalized_normal;

			delta_binormals[vert_index].mul(weight * NORMAL_SOFTEN_FACTOR);
			mesh_scaled_binormals[vert_index].add(delta_binormals[vert_index]);

			LLVector4a tangent;
			tangent.setCross3(mesh_scaled_binormals[vert_index], normalized_normal);
			LLVector4a normalized_binormal;
			normalized_binormal.setCross3(normalized_normal, tangent);
			normalized_binormal.normalize3();
			mesh_binormals[vert_index]         = normalized_binormal;
		}

		avatarp->dirtyMesh();
	}

	//-------------------------------------------------------------------------
	// reallocate vertices
	//-------------------------------------------------------------------------
	delete [] mVertexIndices;
	delete [] mCoords;
	delete [] mNormals;
	delete [] mBinormals;
	delete [] mTexCoords;

	mVertexIndices = new_vertex_indices;
	mCoords        = new_coords;
	mNormals       = new_normals;
	mBinormals     = new_binormals;
	mTexCoords     = new_tex_coords;
	mNumIndices    = nindices;

	return TRUE;
}

void LLModel::generateNormals(F32 angle_cutoff)
{
	//generate normals for all faces by:
	// 1 - Create faceted copy of face with no texture coordinates
	// 2 - Weld vertices in faceted copy that are shared between triangles with less than "angle_cutoff" difference between normals
	// 3 - Generate smoothed set of normals based on welding results
	// 4 - Create faceted copy of face with texture coordinates
	// 5 - Copy smoothed normals to faceted copy, using closest normal to triangle normal where more than one normal exists for a given position
	// 6 - Remove redundant vertices from new faceted (now smooth) copy

	angle_cutoff = cosf(angle_cutoff);
	for (U32 j = 0; j < mVolumeFaces.size(); ++j)
	{
		LLVolumeFace& vol_face = mVolumeFaces[j];

		if (vol_face.mNumIndices > 65535)
		{
			LL_WARNS() << "Too many vertices for normal generation to work." << LL_ENDL;
			continue;
		}

		//create faceted copy of current face with no texture coordinates (step 1)
		LLVolumeFace faceted;

		LLVector4a* src_pos = (LLVector4a*) vol_face.mPositions;
		//LLVector4a* src_norm = (LLVector4a*) vol_face.mNormals;


		faceted.resizeVertices(vol_face.mNumIndices);
		faceted.resizeIndices(vol_face.mNumIndices);
		//bake out triangles into temporary face, clearing texture coordinates
		for (U32 i = 0; i < (U32)vol_face.mNumIndices; ++i)
		{
			U32 idx = vol_face.mIndices[i];
		
			faceted.mPositions[i] = src_pos[idx];
			faceted.mTexCoords[i] = LLVector2(0,0);
			faceted.mIndices[i] = i;
		}

		//generate normals for temporary face
		for (U32 i = 0; i < (U32)faceted.mNumIndices; i += 3)
		{ //for each triangle
			U16 i0 = faceted.mIndices[i+0];
			U16 i1 = faceted.mIndices[i+1];
			U16 i2 = faceted.mIndices[i+2];
			
			LLVector4a& p0 = faceted.mPositions[i0];
			LLVector4a& p1 = faceted.mPositions[i1];
			LLVector4a& p2 = faceted.mPositions[i2];

			LLVector4a& n0 = faceted.mNormals[i0];
			LLVector4a& n1 = faceted.mNormals[i1];
			LLVector4a& n2 = faceted.mNormals[i2];

			LLVector4a lhs, rhs;
			lhs.setSub(p1, p0);
			rhs.setSub(p2, p0);

			n0.setCross3(lhs, rhs);
			n0.normalize3();
			n1 = n0;
			n2 = n0;
		}

		//weld vertices in temporary face, respecting angle_cutoff (step 2)
		validate_face(faceted);
		faceted.optimize(angle_cutoff);
		validate_face(faceted);

		//generate normals for welded face based on new topology (step 3)

		for (U32 i = 0; i < (U32)faceted.mNumVertices; i++)
		{
			faceted.mNormals[i].clear();
		}

		for (U32 i = 0; i < (U32)faceted.mNumIndices; i += 3)
		{ //for each triangle
			U16 i0 = faceted.mIndices[i+0];
			U16 i1 = faceted.mIndices[i+1];
			U16 i2 = faceted.mIndices[i+2];
			
			LLVector4a& p0 = faceted.mPositions[i0];
			LLVector4a& p1 = faceted.mPositions[i1];
			LLVector4a& p2 = faceted.mPositions[i2];

			LLVector4a& n0 = faceted.mNormals[i0];
			LLVector4a& n1 = faceted.mNormals[i1];
			LLVector4a& n2 = faceted.mNormals[i2];

			LLVector4a lhs, rhs;
			lhs.setSub(p1, p0);
			rhs.setSub(p2, p0);

			LLVector4a n;
			n.setCross3(lhs, rhs);

			n0.add(n);
			n1.add(n);
//.........这里部分代码省略.........

bool ll_is_degenerate(const LLVector4a& a, const LLVector4a& b, const LLVector4a& c, F32 tolerance)
{
	// small area check
	{
		LLVector4a edge1; edge1.setSub( a, b );
		LLVector4a edge2; edge2.setSub( a, c );
		//////////////////////////////////////////////////////////////////////////
		/// Linden Modified
		//////////////////////////////////////////////////////////////////////////

		// If no one edge is more than 10x longer than any other edge, we weaken
		// the tolerance by a factor of 1e-4f.

		LLVector4a edge3; edge3.setSub( c, b );
		const F32 len1sq = edge1.dot3(edge1).getF32();
		const F32 len2sq = edge2.dot3(edge2).getF32();
		const F32 len3sq = edge3.dot3(edge3).getF32();
		bool abOK = (len1sq <= 100.f * len2sq) && (len1sq <= 100.f * len3sq);
		bool acOK = (len2sq <= 100.f * len1sq) && (len1sq <= 100.f * len3sq);
		bool cbOK = (len3sq <= 100.f * len1sq) && (len1sq <= 100.f * len2sq);
		if ( abOK && acOK && cbOK )
		{
			tolerance *= 1e-4f;
		}

		//////////////////////////////////////////////////////////////////////////
		/// End Modified
		//////////////////////////////////////////////////////////////////////////

		LLVector4a cross; cross.setCross3( edge1, edge2 );

		LLVector4a edge1b; edge1b.setSub( b, a );
		LLVector4a edge2b; edge2b.setSub( b, c );
		LLVector4a crossb; crossb.setCross3( edge1b, edge2b );

		if ( ( cross.dot3(cross).getF32() < tolerance ) || ( crossb.dot3(crossb).getF32() < tolerance ))
		{
			return true;
		}
	}

	// point triangle distance check
	{
		LLVector4a Q; Q.setSub(a, b);
		LLVector4a R; R.setSub(c, b);

		const F32 QQ = dot3fpu(Q, Q);
		const F32 RR = dot3fpu(R, R);
		const F32 QR = dot3fpu(R, Q);

		volatile F32 QQRR = QQ * RR;
		volatile F32 QRQR = QR * QR;
		F32 Det = (QQRR - QRQR);

		if( Det == 0.0f )
		{
			return true;
		}
	}

	return false;
}

void LLVOPartGroup::getGeometry(S32 idx,
								LLStrider<LLVector4a>& verticesp,
								LLStrider<LLVector3>& normalsp, 
								LLStrider<LLVector2>& texcoordsp,
								LLStrider<LLColor4U>& colorsp, 
								LLStrider<U16>& indicesp)
{
	if (idx >= (S32) mViewerPartGroupp->mParticles.size())
	{
		return;
	}

	const LLViewerPart &part = *((LLViewerPart*) (mViewerPartGroupp->mParticles[idx]));

	U32 vert_offset = mDrawable->getFace(idx)->getGeomIndex();

	
	LLVector4a part_pos_agent;
	part_pos_agent.load3(part.mPosAgent.mV);
	LLVector4a camera_agent;
	camera_agent.load3(getCameraPosition().mV); 
	LLVector4a at;
	at.setSub(part_pos_agent, camera_agent);
	LLVector4a up(0, 0, 1);
	LLVector4a right;

	right.setCross3(at, up);
	right.normalize3fast();
	up.setCross3(right, at);
	up.normalize3fast();

	if (part.mFlags & LLPartData::LL_PART_FOLLOW_VELOCITY_MASK)
	{
		LLVector4a normvel;
		normvel.load3(part.mVelocity.mV);
		normvel.normalize3fast();
		LLVector2 up_fracs;
		up_fracs.mV[0] = normvel.dot3(right).getF32();
		up_fracs.mV[1] = normvel.dot3(up).getF32();
		up_fracs.normalize();
		LLVector4a new_up;
		LLVector4a new_right;

		//new_up = up_fracs.mV[0] * right + up_fracs.mV[1]*up;
		LLVector4a t = right;
		t.mul(up_fracs.mV[0]);
		new_up = up;
		new_up.mul(up_fracs.mV[1]);
		new_up.add(t);

		//new_right = up_fracs.mV[1] * right - up_fracs.mV[0]*up;
		t = right;
		t.mul(up_fracs.mV[1]);
		new_right = up;
		new_right.mul(up_fracs.mV[0]);
		t.sub(new_right);

		up = new_up;
		right = t;
		up.normalize3fast();
		right.normalize3fast();
	}

	right.mul(0.5f*part.mScale.mV[0]);
	up.mul(0.5f*part.mScale.mV[1]);


	LLVector3 normal = -LLViewerCamera::getInstance()->getXAxis();

	//HACK -- the verticesp->mV[3] = 0.f here are to set the texture index to 0 (particles don't use texture batching, maybe they should)
	// this works because there is actually a 4th float stored after the vertex position which is used as a texture index
	// also, somebody please VECTORIZE THIS

	LLVector4a ppapu;
	LLVector4a ppamu;

	ppapu.setAdd(part_pos_agent, up);
	ppamu.setSub(part_pos_agent, up);

	verticesp->setSub(ppapu, right);
	(*verticesp++).getF32ptr()[3] = 0.f;
	verticesp->setSub(ppamu, right);
	(*verticesp++).getF32ptr()[3] = 0.f;
	verticesp->setAdd(ppapu, right);
	(*verticesp++).getF32ptr()[3] = 0.f;
	verticesp->setAdd(ppamu, right);
	(*verticesp++).getF32ptr()[3] = 0.f;

	//*verticesp++ = part_pos_agent + up - right;
	//*verticesp++ = part_pos_agent - up - right;
	//*verticesp++ = part_pos_agent + up + right;
	//*verticesp++ = part_pos_agent - up + right;

	*colorsp++ = part.mColor;
	*colorsp++ = part.mColor;
	*colorsp++ = part.mColor;
	*colorsp++ = part.mColor;

	*texcoordsp++ = LLVector2(0.f, 1.f);
	*texcoordsp++ = LLVector2(0.f, 0.f);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
					}		
				}

				if (tex_mode && mTextureMatrix)
				{
					LLVector3 tmp(tc.mV[0], tc.mV[1], 0.f);
					tmp = tmp * *mTextureMatrix;
					tc.mV[0] = tmp.mV[0];
					tc.mV[1] = tmp.mV[1];
				}
				else
				{
					xform(tc, cos_ang, sin_ang, os, ot, ms, mt);
				}


				*tex_coords++ = tc;
				if (do_bump)
				{
					bump_tc.push_back(tc);
				}
			}

			//mVertexBuffer->setBuffer(0);


			if (do_bump)
			{
				mVertexBuffer->getTexCoord1Strider(tex_coords2, mGeomIndex);
		
				for (S32 i = 0; i < num_vertices; i++)
				{
					LLVector4a tangent;
					tangent.setCross3(vf.mBinormals[i], vf.mNormals[i]);

					LLMatrix4a tangent_to_object;
					tangent_to_object.setRows(tangent, vf.mBinormals[i], vf.mNormals[i]);
					LLVector4a t;
					tangent_to_object.rotate(binormal_dir, t);
					LLVector4a binormal;
					mat_normal.rotate(t, binormal);
						
					//VECTORIZE THIS
					if (mDrawablep->isActive())
					{
						LLVector3 t;
						t.set(binormal.getF32ptr());
						t *= bump_quat;
						binormal.load3(t.mV);
					}

					binormal.normalize3fast();
					LLVector2 tc = bump_tc[i];
					tc += LLVector2( bump_s_primary_light_ray.dot3(tangent).getF32(), bump_t_primary_light_ray.dot3(binormal).getF32() );
					
					*tex_coords2++ = tc;
				}

				//mVertexBuffer->setBuffer(0);
			}
		}
	}

	if (rebuild_pos)
	{
		llassert(num_vertices > 0);