Fix line endlings

1 files changed, 2452 insertions, 2452 deletions

diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index 0750a72b05..9a654ee370 100644
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -1,2452 +1,2452 @@
-/**

- * @file llface.cpp

- * @brief LLFace class implementation

- *

- * $LicenseInfo:firstyear=2001&license=viewerlgpl$

- * Second Life Viewer Source Code

- * Copyright (C) 2010, Linden Research, Inc.

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation;

- * version 2.1 of the License only.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA

- * $/LicenseInfo$

- */

-

-#include "llviewerprecompiledheaders.h"

-

-#include "lldrawable.h" // lldrawable needs to be included before llface

-#include "llface.h"

-#include "llviewertextureanim.h"

-

-#include "llviewercontrol.h"

-#include "llvolume.h"

-#include "m3math.h"

-#include "llmatrix4a.h"

-#include "v3color.h"

-

-#include "lldefs.h"

-

-#include "lldrawpoolavatar.h"

-#include "lldrawpoolbump.h"

-#include "llgl.h"

-#include "llrender.h"

-#include "lllightconstants.h"

-#include "llsky.h"

-#include "llviewercamera.h"

-#include "llviewertexturelist.h"

-#include "llvopartgroup.h"

-#include "llvovolume.h"

-#include "pipeline.h"

-#include "llviewerregion.h"

-#include "llviewerwindow.h"

-#include "llviewershadermgr.h"

-#include "llviewertexture.h"

-#include "llvoavatar.h"

-#include "llsculptidsize.h"

-#include "llmeshrepository.h"

-

-#if LL_LINUX

-// Work-around spurious used before init warning on Vector4a

-//

-#pragma GCC diagnostic ignored "-Wuninitialized"

-#endif

-

-#define LL_MAX_INDICES_COUNT 1000000

-

-static LLStaticHashedString sTextureIndexIn("texture_index_in");

-static LLStaticHashedString sColorIn("color_in");

-

-bool LLFace::sSafeRenderSelect = true; // false

-

-

-#define DOTVEC(a,b) (a.mV[0]*b.mV[0] + a.mV[1]*b.mV[1] + a.mV[2]*b.mV[2])

-

-/*

-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);

-}

-

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

-//

-// LLFace implementation

-//

-

-void LLFace::init(LLDrawable* drawablep, LLViewerObject* objp)

-{

-    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE;

-    mLastUpdateTime = gFrameTimeSeconds;

-    mLastMoveTime = 0.f;

-    mLastSkinTime = gFrameTimeSeconds;

-    mVSize = 0.f;

-    mPixelArea = 16.f;

-    mState      = GLOBAL;

-    mDrawPoolp  = NULL;

-    mPoolType = 0;

-    mCenterLocal = objp->getPosition();

-    mCenterAgent = drawablep->getPositionAgent();

-    mDistance   = 0.f;

-

-    mGeomCount      = 0;

-    mGeomIndex      = 0;

-    mIndicesCount   = 0;

-

-    //special value to indicate uninitialized position

-    mIndicesIndex   = 0xFFFFFFFF;

-

-    for (U32 i = 0; i < LLRender::NUM_TEXTURE_CHANNELS; ++i)

-    {

-        mIndexInTex[i] = 0;

-        mTexture[i] = NULL;

-    }

-

-    mTEOffset       = -1;

-    mTextureIndex = FACE_DO_NOT_BATCH_TEXTURES;

-

-    setDrawable(drawablep);

-    mVObjp = objp;

-

-    mReferenceIndex = -1;

-

-    mTextureMatrix = NULL;

-    mDrawInfo = NULL;

-

-    mFaceColor = LLColor4(1,0,0,1);

-

-    mImportanceToCamera = 0.f ;

-    mBoundingSphereRadius = 0.0f ;

-

-    mHasMedia = false ;

-    mIsMediaAllowed = true;

-}

-

-void LLFace::destroy()

-{

-    if (gDebugGL)

-    {

-        gPipeline.checkReferences(this);

-    }

-

-    for (U32 i = 0; i < LLRender::NUM_TEXTURE_CHANNELS; ++i)

-    {

-        if(mTexture[i].notNull())

-        {

-            mTexture[i]->removeFace(i, this) ;

-            mTexture[i] = NULL;

-        }

-    }

-

-    if (isState(LLFace::PARTICLE))

-    {

-        clearState(LLFace::PARTICLE);

-    }

-

-    if (mDrawPoolp)

-    {

-        mDrawPoolp->removeFace(this);

-        mDrawPoolp = NULL;

-    }

-

-    if (mTextureMatrix)

-    {

-        delete mTextureMatrix;

-        mTextureMatrix = NULL;

-

-        if (mDrawablep)

-        {

-            LLSpatialGroup* group = mDrawablep->getSpatialGroup();

-            if (group)

-            {

-                group->dirtyGeom();

-                gPipeline.markRebuild(group);

-            }

-        }

-    }

-

-    setDrawInfo(NULL);

-

-    mDrawablep = NULL;

-    mVObjp = NULL;

-}

-

-void LLFace::setWorldMatrix(const LLMatrix4 &mat)

-{

-    LL_ERRS() << "Faces on this drawable are not independently modifiable\n" << LL_ENDL;

-}

-

-void LLFace::setPool(LLFacePool* pool)

-{

-    mDrawPoolp = pool;

-}

-

-void LLFace::setPool(LLFacePool* new_pool, LLViewerTexture *texturep)

-{

-    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE

-

-    if (!new_pool)

-    {

-        LL_ERRS() << "Setting pool to null!" << LL_ENDL;

-    }

-

-    if (new_pool != mDrawPoolp)

-    {

-        // Remove from old pool

-        if (mDrawPoolp)

-        {

-            mDrawPoolp->removeFace(this);

-

-            if (mDrawablep)

-            {

-                gPipeline.markRebuild(mDrawablep, LLDrawable::REBUILD_ALL);

-            }

-        }

-        mGeomIndex = 0;

-

-        // Add to new pool

-        if (new_pool)

-        {

-            new_pool->addFace(this);

-        }

-        mDrawPoolp = new_pool;

-    }

-

-    setTexture(texturep) ;

-}

-

-void LLFace::setTexture(U32 ch, LLViewerTexture* tex)

-{

-    llassert(ch < LLRender::NUM_TEXTURE_CHANNELS);

-

-    if(mTexture[ch] == tex)

-    {

-        return ;

-    }

-

-    if(mTexture[ch].notNull())

-    {

-        mTexture[ch]->removeFace(ch, this) ;

-    }

-

-    if(tex)

-    {

-        tex->addFace(ch, this) ;

-    }

-

-    mTexture[ch] = tex ;

-}

-

-void LLFace::setTexture(LLViewerTexture* tex)

-{

-    setDiffuseMap(tex);

-}

-

-void LLFace::setDiffuseMap(LLViewerTexture* tex)

-{

-    setTexture(LLRender::DIFFUSE_MAP, tex);

-}

-

-void LLFace::setAlternateDiffuseMap(LLViewerTexture* tex)

-{

-    setTexture(LLRender::ALTERNATE_DIFFUSE_MAP, tex);

-}

-

-void LLFace::setNormalMap(LLViewerTexture* tex)

-{

-    setTexture(LLRender::NORMAL_MAP, tex);

-}

-

-void LLFace::setSpecularMap(LLViewerTexture* tex)

-{

-    setTexture(LLRender::SPECULAR_MAP, tex);

-}

-

-void LLFace::dirtyTexture()

-{

-    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE

-

-    LLDrawable* drawablep = getDrawable();

-

-    if (mVObjp.notNull() && mVObjp->getVolume())

-    {

-        for (U32 ch = 0; ch < LLRender::NUM_TEXTURE_CHANNELS; ++ch)

-        {

-            if (mTexture[ch].notNull() && mTexture[ch]->getComponents() == 4)

-            { //dirty texture on an alpha object should be treated as an LoD update

-                LLVOVolume* vobj = drawablep->getVOVolume();

-                if (vobj)

-                {

-                    vobj->mLODChanged = true;

-

-                    vobj->updateVisualComplexity();

-                }

-                gPipeline.markRebuild(drawablep, LLDrawable::REBUILD_VOLUME);

-            }

-        }

-    }

-

-    gPipeline.markTextured(drawablep);

-}

-

-void LLFace::switchTexture(U32 ch, LLViewerTexture* new_texture)

-{

-    llassert(ch < LLRender::NUM_TEXTURE_CHANNELS);

-

-    if(mTexture[ch] == new_texture)

-    {

-        return ;

-    }

-

-    if(!new_texture)

-    {

-        LL_ERRS() << "Can not switch to a null texture." << LL_ENDL;

-        return;

-    }

-

-    llassert(mTexture[ch].notNull());

-

-    if (ch == LLRender::DIFFUSE_MAP)

-    {

-        getViewerObject()->changeTEImage(mTEOffset, new_texture) ;

-    }

-

-    setTexture(ch, new_texture) ;

-    dirtyTexture();

-}

-

-void LLFace::setTEOffset(const S32 te_offset)

-{

-    mTEOffset = te_offset;

-}

-

-

-void LLFace::setFaceColor(const LLColor4& color)

-{

-    mFaceColor = color;

-    setState(USE_FACE_COLOR);

-}

-

-void LLFace::unsetFaceColor()

-{

-    clearState(USE_FACE_COLOR);

-}

-

-void LLFace::setDrawable(LLDrawable *drawable)

-{

-    mDrawablep  = drawable;

-    mXform      = &drawable->mXform;

-}

-

-void LLFace::setSize(S32 num_vertices, S32 num_indices, bool align)

-{

-    if (align)

-    {

-        //allocate vertices in blocks of 4 for alignment

-        num_vertices = (num_vertices + 0x3) & ~0x3;

-    }

-

-    if (mGeomCount != num_vertices ||

-        mIndicesCount != num_indices)

-    {

-        mGeomCount    = num_vertices;

-        mIndicesCount = num_indices;

-        mVertexBuffer = NULL;

-    }

-

-    llassert(verify());

-}

-

-void LLFace::setGeomIndex(U16 idx)

-{

-    if (mGeomIndex != idx)

-    {

-        mGeomIndex = idx;

-        mVertexBuffer = NULL;

-    }

-}

-

-void LLFace::setTextureIndex(U8 index)

-{

-    if (index != mTextureIndex)

-    {

-        mTextureIndex = index;

-

-        if (mTextureIndex != FACE_DO_NOT_BATCH_TEXTURES)

-        {

-            mDrawablep->setState(LLDrawable::REBUILD_POSITION);

-        }

-        else

-        {

-            if (mDrawInfo && !mDrawInfo->mTextureList.empty())

-            {

-                LL_ERRS() << "Face with no texture index references indexed texture draw info." << LL_ENDL;

-            }

-        }

-    }

-}

-

-void LLFace::setIndicesIndex(S32 idx)

-{

-    if (mIndicesIndex != idx)

-    {

-        mIndicesIndex = idx;

-        mVertexBuffer = NULL;

-    }

-}

-

-//============================================================================

-

-U16 LLFace::getGeometryAvatar(

-                        LLStrider<LLVector3> &vertices,

-                        LLStrider<LLVector3> &normals,

-                        LLStrider<LLVector2> &tex_coords,

-                        LLStrider<F32>       &vertex_weights,

-                        LLStrider<LLVector4> &clothing_weights)

-{

-    if (mVertexBuffer.notNull())

-    {

-        mVertexBuffer->getVertexStrider      (vertices, mGeomIndex, mGeomCount);

-        mVertexBuffer->getNormalStrider      (normals, mGeomIndex, mGeomCount);

-        mVertexBuffer->getTexCoord0Strider    (tex_coords, mGeomIndex, mGeomCount);

-        mVertexBuffer->getWeightStrider(vertex_weights, mGeomIndex, mGeomCount);

-        mVertexBuffer->getClothWeightStrider(clothing_weights, mGeomIndex, mGeomCount);

-    }

-

-    return mGeomIndex;

-}

-

-U16 LLFace::getGeometry(LLStrider<LLVector3> &vertices, LLStrider<LLVector3> &normals,

-                        LLStrider<LLVector2> &tex_coords, LLStrider<U16> &indicesp)

-{

-    if (mVertexBuffer.notNull())

-    {

-        mVertexBuffer->getVertexStrider(vertices,   mGeomIndex, mGeomCount);

-        if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_NORMAL))

-        {

-            mVertexBuffer->getNormalStrider(normals,    mGeomIndex, mGeomCount);

-        }

-        if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD0))

-        {

-            mVertexBuffer->getTexCoord0Strider(tex_coords, mGeomIndex, mGeomCount);

-        }

-

-        mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex, mIndicesCount);

-    }

-

-    return mGeomIndex;

-}

-

-void LLFace::updateCenterAgent()

-{

-    if (mDrawablep->isActive())

-    {

-        mCenterAgent = mCenterLocal * getRenderMatrix();

-    }

-    else

-    {

-        mCenterAgent = mCenterLocal;

-    }

-}

-

-void LLFace::renderSelected(LLViewerTexture *imagep, const LLColor4& color)

-{

-    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE

-

-    if (mDrawablep == NULL || mDrawablep->getSpatialGroup() == NULL)

-    {

-        return;

-    }

-

-    mDrawablep->getSpatialGroup()->rebuildGeom();

-    mDrawablep->getSpatialGroup()->rebuildMesh();

-

-    if(mVertexBuffer.isNull())

-    {

-        return;

-    }

-

-    if (mGeomCount > 0 && mIndicesCount > 0)

-    {

-        gGL.getTexUnit(0)->bind(imagep);

-

-        gGL.pushMatrix();

-        if (mDrawablep->isActive())

-        {

-            gGL.multMatrix((GLfloat*)mDrawablep->getRenderMatrix().mMatrix);

-        }

-        else

-        {

-            gGL.multMatrix((GLfloat*)mDrawablep->getRegion()->mRenderMatrix.mMatrix);

-        }

-

-        gGL.diffuseColor4fv(color.mV);

-

-        if (mDrawablep->isState(LLDrawable::RIGGED))

-        {

-#if 0 // TODO --  there is no way this won't destroy our GL machine as implemented, rewrite it to not rely on software skinning

-            LLVOVolume* volume = mDrawablep->getVOVolume();

-            if (volume)

-            {

-                LLRiggedVolume* rigged = volume->getRiggedVolume();

-                if (rigged)

-                {

-                    // called when selecting a face during edit of a mesh object

-                    LLGLEnable offset(GL_POLYGON_OFFSET_FILL);

-                    glPolygonOffset(-1.f, -1.f);

-                    gGL.multMatrix((F32*) volume->getRelativeXform().mMatrix);

-                    const LLVolumeFace& vol_face = rigged->getVolumeFace(getTEOffset());

-                    LLVertexBuffer::unbind();

-                    glVertexPointer(3, GL_FLOAT, 16, vol_face.mPositions);

-                    if (vol_face.mTexCoords)

-                    {

-                        glEnableClientState(GL_TEXTURE_COORD_ARRAY);

-                        glTexCoordPointer(2, GL_FLOAT, 8, vol_face.mTexCoords);

-                    }

-                    gGL.syncMatrices();

-                    glDrawElements(GL_TRIANGLES, vol_face.mNumIndices, GL_UNSIGNED_SHORT, vol_face.mIndices);

-                    glDisableClientState(GL_TEXTURE_COORD_ARRAY);

-                }

-            }

-#endif

-        }

-        else

-        {

-            // cheaters sometimes prosper...

-            //

-            mVertexBuffer->setBuffer();

-            mVertexBuffer->draw(LLRender::TRIANGLES, mIndicesCount, mIndicesIndex);

-        }

-

-        gGL.popMatrix();

-    }

-}

-

-

-void renderFace(LLDrawable* drawable, LLFace *face)

-{

-    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE

-

-    LLVOVolume* vobj = drawable->getVOVolume();

-    if (vobj)

-    {

-        LLVolume* volume = NULL;

-

-        if (drawable->isState(LLDrawable::RIGGED))

-        {

-            volume = vobj->getRiggedVolume();

-        }

-        else

-        {

-            volume = vobj->getVolume();

-        }

-

-        if (volume)

-        {

-            const LLVolumeFace& vol_face = volume->getVolumeFace(face->getTEOffset());

-            LLVertexBuffer::drawElements(LLRender::TRIANGLES, vol_face.mPositions, NULL, vol_face.mNumIndices, vol_face.mIndices);

-        }

-    }

-}

-

-void LLFace::renderOneWireframe(const LLColor4 &color, F32 fogCfx, bool wireframe_selection, bool bRenderHiddenSelections, bool shader)

-{

-    if (bRenderHiddenSelections)

-    {

-        gGL.blendFunc(LLRender::BF_SOURCE_COLOR, LLRender::BF_ONE);

-        LLGLDepthTest gls_depth(GL_TRUE, GL_FALSE, GL_GEQUAL);

-        if (shader)

-        {

-            gGL.diffuseColor4f(color.mV[VRED], color.mV[VGREEN], color.mV[VBLUE], 0.4f);

-            renderFace(mDrawablep, this);

-        }

-        else

-        {

-            gGL.flush();

-            {

-                gGL.diffuseColor4f(color.mV[VRED], color.mV[VGREEN], color.mV[VBLUE], 0.4f);

-                renderFace(mDrawablep, this);

-            }

-        }

-    }

-

-    gGL.flush();

-    gGL.setSceneBlendType(LLRender::BT_ALPHA);

-

-    gGL.diffuseColor4f(color.mV[VRED] * 2, color.mV[VGREEN] * 2, color.mV[VBLUE] * 2, color.mV[VALPHA]);

-

-    {

-        LLGLDisable depth(wireframe_selection ? 0 : GL_BLEND);

-        //LLGLEnable stencil(wireframe_selection ? 0 : GL_STENCIL_TEST);

-

-        if (!wireframe_selection)

-        { //modify wireframe into outline selection mode

-            glStencilFunc(GL_NOTEQUAL, 2, 0xffff);

-            glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);

-        }

-

-        LLGLEnable offset(GL_POLYGON_OFFSET_LINE);

-        glPolygonOffset(3.f, 3.f);

-        glLineWidth(5.f);

-        glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);

-        renderFace(mDrawablep, this);

-    }

-}

-

-void LLFace::setDrawInfo(LLDrawInfo* draw_info)

-{

-    mDrawInfo = draw_info;

-}

-

-void LLFace::printDebugInfo() const

-{

-    LLFacePool *poolp = getPool();

-    LL_INFOS() << "Object: " << getViewerObject()->mID << LL_ENDL;

-    if (getDrawable())

-    {

-        LL_INFOS() << "Type: " << LLPrimitive::pCodeToString(getDrawable()->getVObj()->getPCode()) << LL_ENDL;

-    }

-    if (getTexture())

-    {

-        LL_INFOS() << "Texture: " << getTexture() << " Comps: " << (U32)getTexture()->getComponents() << LL_ENDL;

-    }

-    else

-    {

-        LL_INFOS() << "No texture: " << LL_ENDL;

-    }

-

-    LL_INFOS() << "Face: " << this << LL_ENDL;

-    LL_INFOS() << "State: " << getState() << LL_ENDL;

-    LL_INFOS() << "Geom Index Data:" << LL_ENDL;

-    LL_INFOS() << "--------------------" << LL_ENDL;

-    LL_INFOS() << "GI: " << mGeomIndex << " Count:" << mGeomCount << LL_ENDL;

-    LL_INFOS() << "Face Index Data:" << LL_ENDL;

-    LL_INFOS() << "--------------------" << LL_ENDL;

-    LL_INFOS() << "II: " << mIndicesIndex << " Count:" << mIndicesCount << LL_ENDL;

-    LL_INFOS() << LL_ENDL;

-

-    if (poolp)

-    {

-        poolp->printDebugInfo();

-

-        S32 pool_references = 0;

-        for (std::vector<LLFace*>::iterator iter = poolp->mReferences.begin();

-             iter != poolp->mReferences.end(); iter++)

-        {

-            LLFace *facep = *iter;

-            if (facep == this)

-            {

-                LL_INFOS() << "Pool reference: " << pool_references << LL_ENDL;

-                pool_references++;

-            }

-        }

-

-        if (pool_references != 1)

-        {

-            LL_INFOS() << "Incorrect number of pool references!" << LL_ENDL;

-        }

-    }

-

-#if 0

-    LL_INFOS() << "Indices:" << LL_ENDL;

-    LL_INFOS() << "--------------------" << LL_ENDL;

-

-    const U32 *indicesp = getRawIndices();

-    S32 indices_count = getIndicesCount();

-    S32 geom_start = getGeomStart();

-

-    for (S32 i = 0; i < indices_count; i++)

-    {

-        LL_INFOS() << i << ":" << indicesp[i] << ":" << (S32)(indicesp[i] - geom_start) << LL_ENDL;

-    }

-    LL_INFOS() << LL_ENDL;

-

-    LL_INFOS() << "Vertices:" << LL_ENDL;

-    LL_INFOS() << "--------------------" << LL_ENDL;

-    for (S32 i = 0; i < mGeomCount; i++)

-    {

-        LL_INFOS() << mGeomIndex + i << ":" << poolp->getVertex(mGeomIndex + i) << LL_ENDL;

-    }

-    LL_INFOS() << LL_ENDL;

-#endif

-}

-

-// Transform the texture coordinates for this face.

-static void xform(LLVector2 &tex_coord, F32 cosAng, F32 sinAng, F32 offS, F32 offT, F32 magS, F32 magT)

-{

-    // New, good way

-    F32 s = tex_coord.mV[0];

-    F32 t = tex_coord.mV[1];

-

-    // Texture transforms are done about the center of the face.

-    s -= 0.5;

-    t -= 0.5;

-

-    // Handle rotation

-    F32 temp = s;

-    s  = s     * cosAng + t * sinAng;

-    t  = -temp * sinAng + t * cosAng;

-

-    // Then scale

-    s *= magS;

-    t *= magT;

-

-    // Then offset

-    s += offS + 0.5f;

-    t += offT + 0.5f;

-

-    tex_coord.mV[0] = s;

-    tex_coord.mV[1] = t;

-}

-

-// Transform the texture coordinates for this face.

-static void xform4a(LLVector4a &tex_coord, const LLVector4a& trans, const LLVector4Logical& mask, const LLVector4a& rot0, const LLVector4a& rot1, const LLVector4a& offset, const LLVector4a& scale)

-{

-    //tex coord is two coords, <s0, t0, s1, t1>

-    LLVector4a st;

-

-    // Texture transforms are done about the center of the face.

-    st.setAdd(tex_coord, trans);

-

-    // Handle rotation

-    LLVector4a rot_st;

-

-    // <s0 * cosAng, s0*-sinAng, s1*cosAng, s1*-sinAng>

-    LLVector4a s0;

-    s0.splat(st, 0);

-    LLVector4a s1;

-    s1.splat(st, 2);

-    LLVector4a ss;

-    ss.setSelectWithMask(mask, s1, s0);

-

-    LLVector4a a;

-    a.setMul(rot0, ss);

-

-    // <t0*sinAng, t0*cosAng, t1*sinAng, t1*cosAng>

-    LLVector4a t0;

-    t0.splat(st, 1);

-    LLVector4a t1;

-    t1.splat(st, 3);

-    LLVector4a tt;

-    tt.setSelectWithMask(mask, t1, t0);

-

-    LLVector4a b;

-    b.setMul(rot1, tt);

-

-    st.setAdd(a,b);

-

-    // Then scale

-    st.mul(scale);

-

-    // Then offset

-    tex_coord.setAdd(st, offset);

-}

-

-

-bool less_than_max_mag(const LLVector4a& vec)

-{

-    LLVector4a MAX_MAG;

-    MAX_MAG.splat(1024.f*1024.f);

-

-    LLVector4a val;

-    val.setAbs(vec);

-

-    S32 lt = val.lessThan(MAX_MAG).getGatheredBits() & 0x7;

-

-    return lt == 0x7;

-}

-

-bool LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f,

-                             const LLMatrix4& mat_vert_in, bool global_volume)

-{

-    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE

-

-    //get bounding box

-    if (mDrawablep->isState(LLDrawable::REBUILD_VOLUME | LLDrawable::REBUILD_POSITION | LLDrawable::REBUILD_RIGGED))

-    {

-        if (f >= volume.getNumVolumeFaces())

-        {

-            LL_WARNS() << "Generating bounding box for invalid face index!" << LL_ENDL;

-            f = 0;

-        }

-

-        const LLVolumeFace &face = volume.getVolumeFace(f);

-

-        LL_DEBUGS("RiggedBox") << "updating extents for face " << f

-                               << " starting extents " << mExtents[0] << ", " << mExtents[1]

-                               << " starting vf extents " << face.mExtents[0] << ", " << face.mExtents[1]

-                               << " num verts " << face.mNumVertices << LL_ENDL;

-

-        // MAINT-8264 - stray vertices, especially in low LODs, cause bounding box errors.

-        if (face.mNumVertices < 3)

-        {

-            LL_DEBUGS("RiggedBox") << "skipping face " << f << ", bad num vertices "

-                                   << face.mNumVertices << " " << face.mNumIndices << " " << face.mWeights << LL_ENDL;

-            return false;

-        }

-

-        //VECTORIZE THIS

-        LLMatrix4a mat_vert;

-        mat_vert.loadu(mat_vert_in);

-        LLVector4a new_extents[2];

-

-        llassert(less_than_max_mag(face.mExtents[0]));

-        llassert(less_than_max_mag(face.mExtents[1]));

-

-        matMulBoundBox(mat_vert, face.mExtents, mExtents);

-

-        LL_DEBUGS("RiggedBox") << "updated extents for face " << f

-                               << " bbox gave extents " << mExtents[0] << ", " << mExtents[1] << LL_ENDL;

-

-        if (!mDrawablep->isActive())

-        {   // Shift position for region

-            LLVector4a offset;

-            offset.load3(mDrawablep->getRegion()->getOriginAgent().mV);

-            mExtents[0].add(offset);

-            mExtents[1].add(offset);

-            LL_DEBUGS("RiggedBox") << "updating extents for face " << f

-                                   << " not active, added offset " << offset << LL_ENDL;

-        }

-

-        LL_DEBUGS("RiggedBox") << "updated extents for face " << f

-                               << " to " << mExtents[0] << ", " << mExtents[1] << LL_ENDL;

-        LLVector4a t;

-        t.setAdd(mExtents[0],mExtents[1]);

-        t.mul(0.5f);

-

-        mCenterLocal.set(t.getF32ptr());

-

-        t.setSub(mExtents[1],mExtents[0]);

-        mBoundingSphereRadius = t.getLength3().getF32()*0.5f;

-

-        updateCenterAgent();

-    }

-

-    return true;

-}

-

-

-

-// convert surface coordinates to texture coordinates, based on

-// the values in the texture entry.  probably should be

-// integrated with getGeometryVolume() for its texture coordinate

-// generation - but i'll leave that to someone more familiar

-// with the implications.

-LLVector2 LLFace::surfaceToTexture(LLVector2 surface_coord, const LLVector4a& position, const LLVector4a& normal)

-{

-    LLVector2 tc = surface_coord;

-

-    const LLTextureEntry *tep = getTextureEntry();

-

-    if (tep == NULL)

-    {

-        // can't do much without the texture entry

-        return surface_coord;

-    }

-

-    //VECTORIZE THIS

-    // see if we have a non-default mapping

-    U8 texgen = getTextureEntry()->getTexGen();

-    if (texgen != LLTextureEntry::TEX_GEN_DEFAULT)

-    {

-        LLVector4a& center = *(mDrawablep->getVOVolume()->getVolume()->getVolumeFace(mTEOffset).mCenter);

-

-        LLVector4a volume_position;

-        LLVector3 v_position(position.getF32ptr());

-

-        volume_position.load3(mDrawablep->getVOVolume()->agentPositionToVolume(v_position).mV);

-

-        if (!mDrawablep->getVOVolume()->isVolumeGlobal())

-        {

-            LLVector4a scale;

-            scale.load3(mVObjp->getScale().mV);

-            volume_position.mul(scale);

-        }

-

-        LLVector4a volume_normal;

-        LLVector3 v_normal(normal.getF32ptr());

-        volume_normal.load3(mDrawablep->getVOVolume()->agentDirectionToVolume(v_normal).mV);

-        volume_normal.normalize3fast();

-

-        if (texgen == LLTextureEntry::TEX_GEN_PLANAR)

-        {

-            planarProjection(tc, volume_normal, center, volume_position);

-        }

-    }

-

-    if (mTextureMatrix) // if we have a texture matrix, use it

-    {

-        LLVector3 tc3(tc);

-        tc3 = tc3 * *mTextureMatrix;

-        tc = LLVector2(tc3);

-    }

-

-    else // otherwise use the texture entry parameters

-    {

-        xform(tc, cos(tep->getRotation()), sin(tep->getRotation()),

-              tep->mOffsetS, tep->mOffsetT, tep->mScaleS, tep->mScaleT);

-    }

-

-

-    return tc;

-}

-

-// Returns scale compared to default texgen, and face orientation as calculated

-// by planarProjection(). This is needed to match planar texgen parameters.

-void LLFace::getPlanarProjectedParams(LLQuaternion* face_rot, LLVector3* face_pos, F32* scale) const

-{

-    const LLMatrix4& vol_mat = getWorldMatrix();

-    const LLVolumeFace& vf = getViewerObject()->getVolume()->getVolumeFace(mTEOffset);

-    if (! (vf.mNormals && vf.mTangents))

-    {

-        return;

-    }

-    const LLVector4a& normal4a = *vf.mNormals;

-    const LLVector4a& tangent  = *vf.mTangents;

-

-    LLVector4a binormal4a;

-    binormal4a.setCross3(normal4a, tangent);

-    binormal4a.mul(tangent.getF32ptr()[3]);

-

-    LLVector2 projected_binormal;

-    planarProjection(projected_binormal, normal4a, *vf.mCenter, binormal4a);

-    projected_binormal -= LLVector2(0.5f, 0.5f); // this normally happens in xform()

-    *scale = projected_binormal.length();

-    // rotate binormal to match what planarProjection() thinks it is,

-    // then find rotation from that:

-    projected_binormal.normalize();

-    F32 ang = acos(projected_binormal.mV[VY]);

-    ang = (projected_binormal.mV[VX] < 0.f) ? -ang : ang;

-

-    //VECTORIZE THIS

-    LLVector3 binormal(binormal4a.getF32ptr());

-    LLVector3 normal(normal4a.getF32ptr());

-    binormal.rotVec(ang, normal);

-    LLQuaternion local_rot( binormal % normal, binormal, normal );

-    *face_rot = local_rot * vol_mat.quaternion();

-    *face_pos = vol_mat.getTranslation();

-}

-

-// Returns the necessary texture transform to align this face's TE to align_to's TE

-bool LLFace::calcAlignedPlanarTE(const LLFace* align_to,  LLVector2* res_st_offset,

-                                 LLVector2* res_st_scale, F32* res_st_rot, LLRender::eTexIndex map) const

-{

-    if (!align_to)

-    {

-        return false;

-    }

-    const LLTextureEntry *orig_tep = align_to->getTextureEntry();

-    if ((orig_tep->getTexGen() != LLTextureEntry::TEX_GEN_PLANAR) ||

-        (getTextureEntry()->getTexGen() != LLTextureEntry::TEX_GEN_PLANAR))

-    {

-        return false;

-    }

-

-    F32 map_rot = 0.f, map_scaleS = 0.f, map_scaleT = 0.f, map_offsS = 0.f, map_offsT = 0.f;

-

-    LLMaterial* mat = orig_tep->getMaterialParams();

-    if (!mat && map != LLRender::DIFFUSE_MAP)

-    {

-        LL_WARNS_ONCE("llface") << "Face is set to use specular or normal map but has no material, defaulting to diffuse" << LL_ENDL;

-        map = LLRender::DIFFUSE_MAP;

-    }

-

-    switch (map)

-    {

-    case LLRender::DIFFUSE_MAP:

-        map_rot = orig_tep->getRotation();

-        map_scaleS = orig_tep->mScaleS;

-        map_scaleT = orig_tep->mScaleT;

-        map_offsS = orig_tep->mOffsetS;

-        map_offsT = orig_tep->mOffsetT;

-        break;

-    case LLRender::NORMAL_MAP:

-        if (mat->getNormalID().isNull())

-        {

-            return false;

-        }

-        map_rot = mat->getNormalRotation();

-        map_scaleS = mat->getNormalRepeatX();

-        map_scaleT = mat->getNormalRepeatY();

-        map_offsS = mat->getNormalOffsetX();

-        map_offsT = mat->getNormalOffsetY();

-        break;

-    case LLRender::SPECULAR_MAP:

-        if (mat->getSpecularID().isNull())

-        {

-            return false;

-        }

-        map_rot = mat->getSpecularRotation();

-        map_scaleS = mat->getSpecularRepeatX();

-        map_scaleT = mat->getSpecularRepeatY();

-        map_offsS = mat->getSpecularOffsetX();

-        map_offsT = mat->getSpecularOffsetY();

-        break;

-    default: /*make compiler happy*/

-        break;

-    }

-

-    LLVector3 orig_pos, this_pos;

-    LLQuaternion orig_face_rot, this_face_rot;

-    F32 orig_proj_scale, this_proj_scale;

-    align_to->getPlanarProjectedParams(&orig_face_rot, &orig_pos, &orig_proj_scale);

-    getPlanarProjectedParams(&this_face_rot, &this_pos, &this_proj_scale);

-

-    // The rotation of "this face's" texture:

-    LLQuaternion orig_st_rot = LLQuaternion(map_rot, LLVector3::z_axis) * orig_face_rot;

-    LLQuaternion this_st_rot = orig_st_rot * ~this_face_rot;

-    F32 x_ang, y_ang, z_ang;

-    this_st_rot.getEulerAngles(&x_ang, &y_ang, &z_ang);

-    *res_st_rot = z_ang;

-

-    // Offset and scale of "this face's" texture:

-    LLVector3 centers_dist = (this_pos - orig_pos) * ~orig_st_rot;

-    LLVector3 st_scale(map_scaleS, map_scaleT, 1.f);

-    st_scale *= orig_proj_scale;

-    centers_dist.scaleVec(st_scale);

-    LLVector2 orig_st_offset(map_offsS, map_offsT);

-

-    *res_st_offset = orig_st_offset + (LLVector2)centers_dist;

-    res_st_offset->mV[VX] -= (S32)res_st_offset->mV[VX];

-    res_st_offset->mV[VY] -= (S32)res_st_offset->mV[VY];

-

-    st_scale /= this_proj_scale;

-    *res_st_scale = (LLVector2)st_scale;

-    return true;

-}

-

-void LLFace::updateRebuildFlags()

-{

-    if (mDrawablep->isState(LLDrawable::REBUILD_VOLUME))

-    { //this rebuild is zero overhead (direct consequence of some change that affects this face)

-        mLastUpdateTime = gFrameTimeSeconds;

-    }

-    else

-    { //this rebuild is overhead (side effect of some change that does not affect this face)

-        mLastMoveTime = gFrameTimeSeconds;

-    }

-}

-

-

-bool LLFace::canRenderAsMask()

-{

-    const LLTextureEntry* te = getTextureEntry();

-    if( !te || !getViewerObject() || !getTexture() )

-    {

-        return false;

-    }

-

-    if (te->getGLTFRenderMaterial())

-    {

-        return false;

-    }

-

-    if (LLPipeline::sNoAlpha)

-    {

-        return true;

-    }

-

-    if (isState(LLFace::RIGGED))

-    { // never auto alpha-mask rigged faces

-        return false;

-    }

-

-

-    LLMaterial* mat = te->getMaterialParams();

-    if (mat && mat->getDiffuseAlphaMode() == LLMaterial::DIFFUSE_ALPHA_MODE_BLEND)

-    {

-        return false;

-    }

-

-    if ((te->getColor().mV[3] == 1.0f) && // can't treat as mask if we have face alpha

-        (te->getGlow() == 0.f) && // glowing masks are hard to implement - don't mask

-        getTexture()->getIsAlphaMask()) // texture actually qualifies for masking (lazily recalculated but expensive)

-    {

-        if (getViewerObject()->isHUDAttachment() || te->getFullbright())

-        { //hud attachments and fullbright objects are NOT subject to the deferred rendering pipe

-            return LLPipeline::sAutoMaskAlphaNonDeferred;

-        }

-        else

-        {

-            return LLPipeline::sAutoMaskAlphaDeferred;

-        }

-    }

-

-    return false;

-}

-

-//helper function for pushing primitives for transform shaders and cleaning up

-//uninitialized data on the tail, plus tracking number of expected primitives

-void push_for_transform(LLVertexBuffer* buff, U32 source_count, U32 dest_count)

-{

-    if (source_count > 0 && dest_count >= source_count) //protect against possible U32 wrapping

-    {

-        //push source primitives

-        buff->drawArrays(LLRender::POINTS, 0, source_count);

-        U32 tail = dest_count-source_count;

-        for (U32 i = 0; i < tail; ++i)

-        { //copy last source primitive into each element in tail

-            buff->drawArrays(LLRender::POINTS, source_count-1, 1);

-        }

-        gPipeline.mTransformFeedbackPrimitives += dest_count;

-    }

-}

-

-bool LLFace::getGeometryVolume(const LLVolume& volume,

-                                S32 face_index,

-                                const LLMatrix4& mat_vert_in,

-                                const LLMatrix3& mat_norm_in,

-                                U16 index_offset,

-                                bool force_rebuild,

-                                bool no_debug_assert)

-{

-    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE;

-    llassert(verify());

-

-    if (face_index < 0 || face_index >= volume.getNumVolumeFaces())

-    {

-        if (gDebugGL)

-        {

-            LL_WARNS() << "Face index is out of bounds!" << LL_ENDL;

-            LL_WARNS() << "Attempt get volume face out of range!"

-                " Total Faces: " << volume.getNumVolumeFaces() <<

-                " Attempt get access to: " << face_index << LL_ENDL;

-            llassert(no_debug_assert);

-        }

-        return false;

-    }

-

-    bool rigged = isState(RIGGED);

-

-    const LLVolumeFace &vf = volume.getVolumeFace(face_index);

-    S32 num_vertices = (S32)vf.mNumVertices;

-    S32 num_indices = (S32) vf.mNumIndices;

-

-    if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_OCTREE))

-    {

-        updateRebuildFlags();

-    }

-

-    if (mVertexBuffer.notNull())

-    {

-        if (num_indices + (S32) mIndicesIndex > mVertexBuffer->getNumIndices())

-        {

-            if (gDebugGL)

-            {

-                LL_WARNS() << "Index buffer overflow!" << LL_ENDL;

-                LL_WARNS() << "Indices Count: " << mIndicesCount

-                        << " VF Num Indices: " << num_indices

-                        << " Indices Index: " << mIndicesIndex

-                        << " VB Num Indices: " << mVertexBuffer->getNumIndices() << LL_ENDL;

-                LL_WARNS()  << " Face Index: " << face_index

-                        << " Pool Type: " << mPoolType << LL_ENDL;

-                llassert(no_debug_assert);

-            }

-            return false;

-        }

-

-        if (num_vertices + mGeomIndex > mVertexBuffer->getNumVerts())

-        {

-            if (gDebugGL)

-            {

-                LL_WARNS() << "Vertex buffer overflow!" << LL_ENDL;

-                llassert(no_debug_assert);

-            }

-            return false;

-        }

-    }

-

-    LLStrider<LLVector3> vert;

-    LLStrider<LLVector2> tex_coords0;

-    LLStrider<LLVector2> tex_coords1;

-    LLStrider<LLVector2> tex_coords2;

-    LLStrider<LLVector3> norm;

-    LLStrider<LLColor4U> colors;

-    LLStrider<LLVector3> tangent;

-    LLStrider<U16> indicesp;

-    LLStrider<LLVector4> wght;

-

-    bool full_rebuild = force_rebuild || mDrawablep->isState(LLDrawable::REBUILD_VOLUME);

-

-    bool global_volume = mDrawablep->getVOVolume()->isVolumeGlobal();

-    LLVector3 scale;

-    if (global_volume)

-    {

-        scale.setVec(1,1,1);

-    }

-    else

-    {

-        scale = mVObjp->getScale();

-    }

-

-    bool rebuild_pos = full_rebuild || mDrawablep->isState(LLDrawable::REBUILD_POSITION);

-    bool rebuild_color = full_rebuild || mDrawablep->isState(LLDrawable::REBUILD_COLOR);

-    bool rebuild_emissive = rebuild_color && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_EMISSIVE);

-    bool rebuild_tcoord = full_rebuild || mDrawablep->isState(LLDrawable::REBUILD_TCOORD);

-    bool rebuild_normal = rebuild_pos && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_NORMAL);

-    bool rebuild_tangent = rebuild_pos && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TANGENT);

-    bool rebuild_weights = rebuild_pos && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_WEIGHT4);

-

-    const LLTextureEntry *tep = mVObjp->getTE(face_index);

-    const U8 bump_code = tep ? tep->getBumpmap() : 0;

-

-    bool is_static = mDrawablep->isStatic();

-    bool is_global = is_static;

-

-    LLVector3 center_sum(0.f, 0.f, 0.f);

-

-    if (is_global)

-    {

-        setState(GLOBAL);

-    }

-    else

-    {

-        clearState(GLOBAL);

-    }

-

-    LLColor4U color = tep->getColor();

-

-    if (tep->getGLTFRenderMaterial())

-    {

-        color = tep->getGLTFRenderMaterial()->mBaseColor;

-    }

-

-    if (rebuild_color)

-    { //decide if shiny goes in alpha channel of color

-        if (tep &&

-            !isInAlphaPool())  // <--- alpha channel MUST contain transparency, not shiny

-    {

-            LLMaterial* mat = tep->getMaterialParams().get();

-

-            bool shiny_in_alpha = false;

-

-            //store shiny in alpha if we don't have a specular map

-            if  (!mat || mat->getSpecularID().isNull())

-            {

-                shiny_in_alpha = true;

-            }

-

-            if (shiny_in_alpha)

-            {

-                static const GLfloat SHININESS_TO_ALPHA[4] =

-                {

-                    0.0000f,

-                    0.25f,

-                    0.5f,

-                    0.75f

-                };

-

-                llassert(tep->getShiny() <= 3);

-                color.mV[3] = U8 (SHININESS_TO_ALPHA[tep->getShiny()] * 255);

-            }

-        }

-    }

-

-    // INDICES

-    if (full_rebuild)

-    {

-        LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - indices");

-        mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex, mIndicesCount);

-

-        volatile __m128i* dst = (__m128i*) indicesp.get();

-        __m128i* src = (__m128i*) vf.mIndices;

-        __m128i offset = _mm_set1_epi16(index_offset);

-

-        S32 end = num_indices/8;

-

-        for (S32 i = 0; i < end; i++)

-        {

-            __m128i res = _mm_add_epi16(src[i], offset);

-            _mm_storeu_si128((__m128i*) dst++, res);

-        }

-

-        {

-            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - indices tail");

-            U16* idx = (U16*) dst;

-

-            for (S32 i = end*8; i < num_indices; ++i)

-            {

-                *idx++ = vf.mIndices[i]+index_offset;

-            }

-        }

-    }

-

-

-    LLMaterial* mat = tep->getMaterialParams().get();

-    LLGLTFMaterial* gltf_mat = tep->getGLTFRenderMaterial();

-

-    F32 r = 0, os = 0, ot = 0, ms = 0, mt = 0, cos_ang = 0, sin_ang = 0;

-

-    constexpr S32 XFORM_NONE = 0;

-    constexpr S32 XFORM_BLINNPHONG_COLOR = 1;

-    constexpr S32 XFORM_BLINNPHONG_NORMAL = 1 << 1;

-    constexpr S32 XFORM_BLINNPHONG_SPECULAR = 1 << 2;

-

-    S32 xforms = XFORM_NONE;

-    // For GLTF, transforms will be applied later

-    if (rebuild_tcoord && tep && !gltf_mat)

-    {

-        r  = tep->getRotation();

-        os = tep->mOffsetS;

-        ot = tep->mOffsetT;

-        ms = tep->mScaleS;

-        mt = tep->mScaleT;

-        cos_ang = cos(r);

-        sin_ang = sin(r);

-

-        if (cos_ang != 1.f ||

-            sin_ang != 0.f ||

-            os != 0.f ||

-            ot != 0.f ||

-            ms != 1.f ||

-            mt != 1.f)

-        {

-            xforms |= XFORM_BLINNPHONG_COLOR;

-        }

-        if (mat)

-        {

-            F32 r_norm = 0, os_norm = 0, ot_norm = 0, ms_norm = 0, mt_norm = 0, cos_ang_norm = 0, sin_ang_norm = 0;

-            mat->getNormalOffset(os_norm, ot_norm);

-            mat->getNormalRepeat(ms_norm, mt_norm);

-            r_norm = mat->getNormalRotation();

-            cos_ang_norm = cos(r_norm);

-            sin_ang_norm = sin(r_norm);

-            if (cos_ang_norm != 1.f ||

-                sin_ang_norm != 0.f ||

-                os_norm != 0.f ||

-                ot_norm != 0.f ||

-                ms_norm != 1.f ||

-                mt_norm != 1.f)

-            {

-                xforms |= XFORM_BLINNPHONG_NORMAL;

-            }

-        }

-        if (mat)

-        {

-            F32 r_spec = 0, os_spec = 0, ot_spec = 0, ms_spec = 0, mt_spec = 0, cos_ang_spec = 0, sin_ang_spec = 0;

-            mat->getSpecularOffset(os_spec, ot_spec);

-            mat->getSpecularRepeat(ms_spec, mt_spec);

-            r_spec = mat->getSpecularRotation();

-            cos_ang_spec = cos(r_spec);

-            sin_ang_spec = sin(r_spec);

-            if (cos_ang_spec != 1.f ||

-                sin_ang_spec != 0.f ||

-                os_spec != 0.f ||

-                ot_spec != 0.f ||

-                ms_spec != 1.f ||

-                mt_spec != 1.f)

-            {

-                xforms |= XFORM_BLINNPHONG_SPECULAR;

-            }

-        }

-    }

-

-    const LLMeshSkinInfo* skin = nullptr;

-    LLMatrix4a mat_vert;

-    LLMatrix4a mat_normal;

-

-    // prepare mat_vert

-    if (rebuild_pos)

-    {

-        if (rigged)

-        { //override with bind shape matrix if rigged

-            skin = mSkinInfo;

-            mat_vert = skin->mBindShapeMatrix;

-        }

-        else

-        {

-            mat_vert.loadu(mat_vert_in);

-        }

-    }

-

-    if (rebuild_normal || rebuild_tangent)

-    { //override mat_normal with inverse of skin->mBindShapeMatrix

-        LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - norm mat override");

-        if (rigged)

-        {

-            if (skin == nullptr)

-            {

-                skin = mSkinInfo;

-            }

-

-            //TODO -- cache this (check profile marker above)?

-            glh::matrix4f m((F32*) skin->mBindShapeMatrix.getF32ptr());

-            m = m.inverse().transpose();

-            mat_normal.loadu(m.m);

-        }

-        else

-        {

-            mat_normal.loadu(mat_norm_in);

-        }

-    }

-

-    {

-        //if it's not fullbright and has no normals, bake sunlight based on face normal

-        //bool bake_sunlight = !getTextureEntry()->getFullbright() &&

-        //  !mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_NORMAL);

-

-        if (rebuild_tcoord)

-        {

-            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - tcoord");

-

-            //bump setup

-            LLVector4a binormal_dir( -sin_ang, cos_ang, 0.f );

-            LLVector4a bump_s_primary_light_ray(0.f, 0.f, 0.f);

-            LLVector4a bump_t_primary_light_ray(0.f, 0.f, 0.f);

-

-            LLQuaternion bump_quat;

-            if (mDrawablep->isActive())

-            {

-                bump_quat = LLQuaternion(mDrawablep->getRenderMatrix());

-            }

-

-            if (bump_code)

-            {

-                mVObjp->getVolume()->genTangents(face_index);

-                F32 offset_multiple;

-                switch( bump_code )

-                {

-                    case BE_NO_BUMP:

-                    offset_multiple = 0.f;

-                    break;

-                    case BE_BRIGHTNESS:

-                    case BE_DARKNESS:

-                    if( mTexture[LLRender::DIFFUSE_MAP].notNull() && mTexture[LLRender::DIFFUSE_MAP]->hasGLTexture())

-                    {

-                        // Offset by approximately one texel

-                        S32 cur_discard = mTexture[LLRender::DIFFUSE_MAP]->getDiscardLevel();

-                        S32 max_size = llmax( mTexture[LLRender::DIFFUSE_MAP]->getWidth(), mTexture[LLRender::DIFFUSE_MAP]->getHeight() );

-                        max_size <<= cur_discard;

-                        const F32 ARTIFICIAL_OFFSET = 2.f;

-                        offset_multiple = ARTIFICIAL_OFFSET / (F32)max_size;

-                    }

-                    else

-                    {

-                        offset_multiple = 1.f/256;

-                    }

-                    break;

-

-                    default:  // Standard bumpmap textures.  Assumed to be 256x256

-                    offset_multiple = 1.f / 256;

-                    break;

-                }

-

-                F32 s_scale = 1.f;

-                F32 t_scale = 1.f;

-                if( tep )

-                {

-                    tep->getScale( &s_scale, &t_scale );

-                }

-                // Use the nudged south when coming from above sun angle, such

-                // that emboss mapping always shows up on the upward faces of cubes when

-                // it's noon (since a lot of builders build with the sun forced to noon).

-                LLVector3   sun_ray  = gSky.mVOSkyp->mBumpSunDir;

-                LLVector3   moon_ray = gSky.mVOSkyp->getMoon().getDirection();

-                LLVector3& primary_light_ray = (sun_ray.mV[VZ] > 0) ? sun_ray : moon_ray;

-

-                bump_s_primary_light_ray.load3((offset_multiple * s_scale * primary_light_ray).mV);

-                bump_t_primary_light_ray.load3((offset_multiple * t_scale * primary_light_ray).mV);

-            }

-

-            U8 texgen = getTextureEntry()->getTexGen();

-            if (rebuild_tcoord && texgen != LLTextureEntry::TEX_GEN_DEFAULT)

-            { //planar texgen needs binormals

-                mVObjp->getVolume()->genTangents(face_index);

-            }

-

-            U8 tex_mode = 0;

-

-            bool tex_anim = false;

-

-                LLVOVolume* vobj = (LLVOVolume*) (LLViewerObject*) mVObjp;

-                tex_mode = vobj->mTexAnimMode;

-

-            if (vobj->mTextureAnimp)

-            { //texture animation is in play, override specular and normal map tex coords with diffuse texcoords

-                tex_anim = true;

-            }

-

-            if (isState(TEXTURE_ANIM))

-            {

-                if (!tex_mode)

-                {

-                    clearState(TEXTURE_ANIM);

-                }

-                else

-                {

-                    os = ot = 0.f;

-                    r = 0.f;

-                    cos_ang = 1.f;

-                    sin_ang = 0.f;

-                    ms = mt = 1.f;

-

-                    xforms = XFORM_NONE;

-                }

-

-                if (getVirtualSize() >= MIN_TEX_ANIM_SIZE) // || isState(LLFace::RIGGED))

-                { //don't override texture transform during tc bake

-                    tex_mode = 0;

-                }

-            }

-

-            LLVector4a scalea;

-            scalea.load3(scale.mV);

-

-            bool do_bump = bump_code && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD1);

-

-            if ((mat || gltf_mat) && !do_bump)

-            {

-                do_bump  = mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD1)

-                         || mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD2);

-            }

-

-            // For GLTF materials: Transforms will be applied later

-            bool do_tex_mat = tex_mode && mTextureMatrix && !gltf_mat;

-

-            if (!do_bump)

-            { //not bump mapped, might be able to do a cheap update

-                mVertexBuffer->getTexCoord0Strider(tex_coords0, mGeomIndex, mGeomCount);

-

-                if (texgen != LLTextureEntry::TEX_GEN_PLANAR)

-                {

-                    LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - texgen");

-                    if (!do_tex_mat)

-                    {

-                        if (xforms == XFORM_NONE)

-                        {

-                            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("ggv - texgen 1");

-                            S32 tc_size = (num_vertices*2*sizeof(F32)+0xF) & ~0xF;

-                            LLVector4a::memcpyNonAliased16((F32*) tex_coords0.get(), (F32*) vf.mTexCoords, tc_size);

-                        }

-                        else

-                        {

-                            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("ggv - texgen 2");

-                            F32* dst = (F32*) tex_coords0.get();

-                            LLVector4a* src = (LLVector4a*) vf.mTexCoords;

-

-                            LLVector4a trans;

-                            trans.splat(-0.5f);

-

-                            LLVector4a rot0;

-                            rot0.set(cos_ang, -sin_ang, cos_ang, -sin_ang);

-

-                            LLVector4a rot1;

-                            rot1.set(sin_ang, cos_ang, sin_ang, cos_ang);

-

-                            LLVector4a scale;

-                            scale.set(ms, mt, ms, mt);

-

-                            LLVector4a offset;

-                            offset.set(os+0.5f, ot+0.5f, os+0.5f, ot+0.5f);

-

-                            LLVector4Logical mask;

-                            mask.clear();

-                            mask.setElement<2>();

-                            mask.setElement<3>();

-

-                            U32 count = num_vertices/2 + num_vertices%2;

-

-                            for (S32 i = 0; i < count; i++)

-                            {

-                                LLVector4a res = *src++;

-                                xform4a(res, trans, mask, rot0, rot1, offset, scale);

-                                res.store4a(dst);

-                                dst += 4;

-                            }

-                        }

-                    }

-                    else

-                    { //do tex mat, no texgen, no bump

-                        for (S32 i = 0; i < num_vertices; i++)

-                        {

-                            LLVector2 tc(vf.mTexCoords[i]);

-

-                            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];

-                            *tex_coords0++ = tc;

-                        }

-                    }

-                }

-                else

-                { //no bump, tex gen planar

-                    LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - texgen planar");

-                    if (do_tex_mat)

-                    {

-                        for (S32 i = 0; i < num_vertices; i++)

-                        {

-                            LLVector2 tc(vf.mTexCoords[i]);

-                            LLVector4a& norm = vf.mNormals[i];

-                            LLVector4a& center = *(vf.mCenter);

-                            LLVector4a vec = vf.mPositions[i];

-                            vec.mul(scalea);

-                            planarProjection(tc, norm, center, vec);

-

-                            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];

-

-                            *tex_coords0++ = tc;

-                        }

-                    }

-                    else if (xforms != XFORM_NONE)

-                    {

-                        for (S32 i = 0; i < num_vertices; i++)

-                        {

-                            LLVector2 tc(vf.mTexCoords[i]);

-                            LLVector4a& norm = vf.mNormals[i];

-                            LLVector4a& center = *(vf.mCenter);

-                            LLVector4a vec = vf.mPositions[i];

-                            vec.mul(scalea);

-                            planarProjection(tc, norm, center, vec);

-

-                            xform(tc, cos_ang, sin_ang, os, ot, ms, mt);

-

-                            *tex_coords0++ = tc;

-                        }

-                    }

-                    else

-                    {

-                        for (S32 i = 0; i < num_vertices; i++)

-                        {

-                            LLVector2 tc(vf.mTexCoords[i]);

-                            LLVector4a& norm = vf.mNormals[i];

-                            LLVector4a& center = *(vf.mCenter);

-                            LLVector4a vec = vf.mPositions[i];

-                            vec.mul(scalea);

-                            planarProjection(tc, norm, center, vec);

-

-                            *tex_coords0++ = tc;

-                        }

-                    }

-                }

-            }

-            else

-            { //bump mapped or has material, just do the whole expensive loop

-                LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - texgen default");

-

-                std::vector<LLVector2> bump_tc;

-

-                if (mat && !mat->getNormalID().isNull())

-                { //writing out normal and specular texture coordinates, not bump offsets

-                    do_bump = false;

-                }

-

-                LLStrider<LLVector2> dst;

-

-                for (U32 ch = 0; ch < 3; ++ch)

-                {

-                    S32 xform_channel = XFORM_NONE;

-                    switch (ch)

-                    {

-                        case 0:

-                            xform_channel = XFORM_BLINNPHONG_COLOR;

-                            mVertexBuffer->getTexCoord0Strider(dst, mGeomIndex, mGeomCount);

-                            break;

-                        case 1:

-                            xform_channel = XFORM_BLINNPHONG_NORMAL;

-                            if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD1))

-                            {

-                                mVertexBuffer->getTexCoord1Strider(dst, mGeomIndex, mGeomCount);

-                                if (mat && !tex_anim)

-                                {

-                                    r  = mat->getNormalRotation();

-                                    mat->getNormalOffset(os, ot);

-                                    mat->getNormalRepeat(ms, mt);

-

-                                    cos_ang = cos(r);

-                                    sin_ang = sin(r);

-

-                                }

-                            }

-                            else

-                            {

-                                continue;

-                            }

-                            break;

-                        case 2:

-                            xform_channel = XFORM_BLINNPHONG_SPECULAR;

-                            if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD2))

-                            {

-                                mVertexBuffer->getTexCoord2Strider(dst, mGeomIndex, mGeomCount);

-                                if (mat && !tex_anim)

-                                {

-                                    r  = mat->getSpecularRotation();

-                                    mat->getSpecularOffset(os, ot);

-                                    mat->getSpecularRepeat(ms, mt);

-

-                                    cos_ang = cos(r);

-                                    sin_ang = sin(r);

-                                }

-                            }

-                            else

-                            {

-                                continue;

-                            }

-                            break;

-                    }

-                    const bool do_xform = (xforms & xform_channel) != XFORM_NONE;

-

-

-                    for (S32 i = 0; i < num_vertices; i++)

-                    {

-                        LLVector2 tc(vf.mTexCoords[i]);

-

-                        LLVector4a& norm = vf.mNormals[i];

-

-                        LLVector4a& center = *(vf.mCenter);

-

-                        if (texgen != LLTextureEntry::TEX_GEN_DEFAULT)

-                        {

-                            LLVector4a vec = vf.mPositions[i];

-

-                            vec.mul(scalea);

-

-                            if (texgen == LLTextureEntry::TEX_GEN_PLANAR)

-                            {

-                                planarProjection(tc, norm, center, vec);

-                            }

-                        }

-

-                        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 if (do_xform)

-                        {

-                            xform(tc, cos_ang, sin_ang, os, ot, ms, mt);

-                        }

-

-                        *dst++ = tc;

-                        if (do_bump)

-                        {

-                            bump_tc.push_back(tc);

-                        }

-                    }

-                }

-

-                if ((!mat && !gltf_mat) && do_bump)

-                {

-                    mVertexBuffer->getTexCoord1Strider(tex_coords1, mGeomIndex, mGeomCount);

-

-                    mVObjp->getVolume()->genTangents(face_index);

-

-                    for (S32 i = 0; i < num_vertices; i++)

-                    {

-                        LLVector4a tangent = vf.mTangents[i];

-

-                        LLVector4a binorm;

-                        binorm.setCross3(vf.mNormals[i], tangent);

-                        binorm.mul(tangent.getF32ptr()[3]);

-

-                        LLMatrix4a tangent_to_object;

-                        tangent_to_object.setRows(tangent, binorm, 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_coords1++ = tc;

-                    }

-                }

-            }

-        }

-

-        if (rebuild_pos)

-        {

-            LLVector4a* src = vf.mPositions;

-

-            //_mm_prefetch((char*)src, _MM_HINT_T0);

-

-            LLVector4a* end = src+num_vertices;

-            //LLVector4a* end_64 = end-4;

-

-            llassert(num_vertices > 0);

-

-            mVertexBuffer->getVertexStrider(vert, mGeomIndex, mGeomCount);

-

-

-            F32* dst = (F32*) vert.get();

-            F32* end_f32 = dst+mGeomCount*4;

-

-            //_mm_prefetch((char*)dst, _MM_HINT_NTA);

-            //_mm_prefetch((char*)src, _MM_HINT_NTA);

-

-            //_mm_prefetch((char*)dst, _MM_HINT_NTA);

-

-

-            LLVector4a res0; //,res1,res2,res3;

-

-            LLVector4a texIdx;

-

-            S32 index = mTextureIndex < FACE_DO_NOT_BATCH_TEXTURES ? mTextureIndex : 0;

-

-            F32 val = 0.f;

-            S32* vp = (S32*) &val;

-            *vp = index;

-

-            llassert(index <= LLGLSLShader::sIndexedTextureChannels-1);

-

-            LLVector4Logical mask;

-            mask.clear();

-            mask.setElement<3>();

-

-            texIdx.set(0,0,0,val);

-

-            LLVector4a tmp;

-

-

-            while (src < end)

-            {

-                mat_vert.affineTransform(*src++, res0);

-                tmp.setSelectWithMask(mask, texIdx, res0);

-                tmp.store4a((F32*) dst);

-                dst += 4;

-            }

-

-            while (dst < end_f32)

-            {

-                res0.store4a((F32*) dst);

-                dst += 4;

-            }

-        }

-

-        if (rebuild_normal)

-        {

-            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - normal");

-

-            mVertexBuffer->getNormalStrider(norm, mGeomIndex, mGeomCount);

-            F32* normals = (F32*) norm.get();

-            LLVector4a* src = vf.mNormals;

-            LLVector4a* end = src+num_vertices;

-

-            while (src < end)

-            {

-                LLVector4a normal;

-                mat_normal.rotate(*src++, normal);

-                normal.store4a(normals);

-                normals += 4;

-            }

-        }

-

-        if (rebuild_tangent)

-        {

-            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - tangent");

-            mVertexBuffer->getTangentStrider(tangent, mGeomIndex, mGeomCount);

-            F32* tangents = (F32*) tangent.get();

-

-            mVObjp->getVolume()->genTangents(face_index);

-

-            LLVector4Logical mask;

-            mask.clear();

-            mask.setElement<3>();

-

-            LLVector4a* src = vf.mTangents;

-            LLVector4a* end = vf.mTangents +num_vertices;

-

-            while (src < end)

-            {

-                LLVector4a tangent_out;

-                mat_normal.rotate(*src, tangent_out);

-                tangent_out.setSelectWithMask(mask, *src, tangent_out);

-                tangent_out.store4a(tangents);

-

-                src++;

-                tangents += 4;

-            }

-        }

-

-        if (rebuild_weights && vf.mWeights)

-        {

-            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - weight");

-            mVertexBuffer->getWeight4Strider(wght, mGeomIndex, mGeomCount);

-            F32* weights = (F32*) wght.get();

-            LLVector4a::memcpyNonAliased16(weights, (F32*) vf.mWeights, num_vertices*4*sizeof(F32));

-        }

-

-        if (rebuild_color && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_COLOR) )

-        {

-            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - color");

-            mVertexBuffer->getColorStrider(colors, mGeomIndex, mGeomCount);

-

-            LLVector4a src;

-

-            U32 vec[4];

-            vec[0] = vec[1] = vec[2] = vec[3] = color.asRGBA();

-

-            src.loadua((F32*) vec);

-

-            F32* dst = (F32*) colors.get();

-            S32 num_vecs = num_vertices/4;

-            if (num_vertices%4 > 0)

-            {

-                ++num_vecs;

-            }

-

-            for (S32 i = 0; i < num_vecs; i++)

-            {

-                src.store4a(dst);

-                dst += 4;

-            }

-        }

-

-        if (rebuild_emissive)

-        {

-            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - emissive");

-            LLStrider<LLColor4U> emissive;

-            mVertexBuffer->getEmissiveStrider(emissive, mGeomIndex, mGeomCount);

-

-            U8 glow = (U8) llclamp((S32) (getTextureEntry()->getGlow()*255), 0, 255);

-

-            LLVector4a src;

-

-

-            LLColor4U glow4u = LLColor4U(0,0,0,glow);

-

-            U32 glow32 = glow4u.asRGBA();

-

-            U32 vec[4];

-            vec[0] = vec[1] = vec[2] = vec[3] = glow32;

-

-            src.loadua((F32*) vec);

-

-            F32* dst = (F32*) emissive.get();

-            S32 num_vecs = num_vertices/4;

-            if (num_vertices%4 > 0)

-            {

-                ++num_vecs;

-            }

-

-            for (S32 i = 0; i < num_vecs; i++)

-            {

-                src.store4a(dst);

-                dst += 4;

-            }

-        }

-    }

-

-    if (rebuild_tcoord)

-    {

-        mTexExtents[0].setVec(0,0);

-        mTexExtents[1].setVec(1,1);

-        xform(mTexExtents[0], cos_ang, sin_ang, os, ot, ms, mt);

-        xform(mTexExtents[1], cos_ang, sin_ang, os, ot, ms, mt);

-

-        F32 es = vf.mTexCoordExtents[1].mV[0] - vf.mTexCoordExtents[0].mV[0] ;

-        F32 et = vf.mTexCoordExtents[1].mV[1] - vf.mTexCoordExtents[0].mV[1] ;

-        mTexExtents[0][0] *= es ;

-        mTexExtents[1][0] *= es ;

-        mTexExtents[0][1] *= et ;

-        mTexExtents[1][1] *= et ;

-    }

-

-

-    return true;

-}

-

-void LLFace::renderIndexed()

-{

-    if (mVertexBuffer.notNull())

-    {

-        mVertexBuffer->setBuffer();

-        mVertexBuffer->drawRange(LLRender::TRIANGLES, getGeomIndex(), getGeomIndex() + getGeomCount()-1, getIndicesCount(), getIndicesStart());

-    }

-}

-

-//check if the face has a media

-bool LLFace::hasMedia() const

-{

-    if(mHasMedia)

-    {

-        return true ;

-    }

-    if(mTexture[LLRender::DIFFUSE_MAP].notNull())

-    {

-        return mTexture[LLRender::DIFFUSE_MAP]->hasParcelMedia() ;  //if has a parcel media

-    }

-

-    return false ; //no media.

-}

-

-const F32 LEAST_IMPORTANCE = 0.05f ;

-const F32 LEAST_IMPORTANCE_FOR_LARGE_IMAGE = 0.3f ;

-

-void LLFace::resetVirtualSize()

-{

-    setVirtualSize(0.f);

-    mImportanceToCamera = 0.f;

-}

-

-F32 LLFace::getTextureVirtualSize()

-{

-    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;

-    F32 radius;

-    F32 cos_angle_to_view_dir;

-    bool in_frustum = calcPixelArea(cos_angle_to_view_dir, radius);

-

-    if (mPixelArea < F_ALMOST_ZERO || !in_frustum)

-    {

-        setVirtualSize(0.f) ;

-        return 0.f;

-    }

-

-    //get area of circle in texture space

-    LLVector2 tdim = mTexExtents[1] - mTexExtents[0];

-    F32 texel_area = (tdim * 0.5f).lengthSquared()*3.14159f;

-    if (texel_area <= 0)

-    {

-        // Probably animated, use default

-        texel_area = 1.f;

-    }

-

-    F32 face_area;

-    if (mVObjp->isSculpted() && texel_area > 1.f)

-    {

-        //sculpts can break assumptions about texel area

-        face_area = mPixelArea;

-    }

-    else

-    {

-        //apply texel area to face area to get accurate ratio

-        //face_area /= llclamp(texel_area, 1.f/64.f, 16.f);

-        face_area =  mPixelArea / llclamp(texel_area, 0.015625f, 128.f);

-    }

-

-    face_area = LLFace::adjustPixelArea(mImportanceToCamera, face_area) ;

-    if(face_area > LLViewerTexture::sMinLargeImageSize) //if is large image, shrink face_area by considering the partial overlapping.

-    {

-        if(mImportanceToCamera > LEAST_IMPORTANCE_FOR_LARGE_IMAGE && mTexture[LLRender::DIFFUSE_MAP].notNull() && mTexture[LLRender::DIFFUSE_MAP]->isLargeImage())

-        {

-            face_area *= adjustPartialOverlapPixelArea(cos_angle_to_view_dir, radius );

-        }

-    }

-

-    setVirtualSize(face_area) ;

-

-    return face_area;

-}

-

-bool LLFace::calcPixelArea(F32& cos_angle_to_view_dir, F32& radius)

-{

-    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE;

-

-    //VECTORIZE THIS

-    //get area of circle around face

-

-    LLVector4a center;

-    LLVector4a size;

-

-

-    if (isState(LLFace::RIGGED))

-    {

-        //override with avatar bounding box

-        LLVOAvatar* avatar = mVObjp->getAvatar();

-        if (avatar && avatar->mDrawable)

-        {

-            center.load3(avatar->getPositionAgent().mV);

-            const LLVector4a* exts = avatar->mDrawable->getSpatialExtents();

-            size.setSub(exts[1], exts[0]);

-        }

-        else

-        {

-            return false;

-        }

-    }

-    else

-    {

-        center.load3(getPositionAgent().mV);

-        size.setSub(mExtents[1], mExtents[0]);

-    }

-    size.mul(0.5f);

-

-    LLViewerCamera* camera = LLViewerCamera::getInstance();

-

-    F32 size_squared = size.dot3(size).getF32();

-    LLVector4a lookAt;

-    LLVector4a t;

-    t.load3(camera->getOrigin().mV);

-    lookAt.setSub(center, t);

-

-    F32 dist = lookAt.getLength3().getF32();

-    dist = llmax(dist-size.getLength3().getF32(), 0.001f);

-    //ramp down distance for nearby objects

-    if (dist < 16.f)

-    {

-        dist /= 16.f;

-        dist *= dist;

-        dist *= 16.f;

-    }

-

-    lookAt.normalize3fast() ;

-

-    //get area of circle around node

-    F32 app_angle = atanf((F32) sqrt(size_squared) / dist);

-    radius = app_angle*LLDrawable::sCurPixelAngle;

-    mPixelArea = radius*radius * 3.14159f;

-    LLVector4a x_axis;

-    x_axis.load3(camera->getXAxis().mV);

-    cos_angle_to_view_dir = lookAt.dot3(x_axis).getF32();

-

-    //if has media, check if the face is out of the view frustum.

-    if(hasMedia())

-    {

-        if(!camera->AABBInFrustum(center, size))

-        {

-            mImportanceToCamera = 0.f ;

-            return false ;

-        }

-        if(cos_angle_to_view_dir > camera->getCosHalfFov()) //the center is within the view frustum

-        {

-            cos_angle_to_view_dir = 1.0f ;

-        }

-        else

-        {

-            LLVector4a d;

-            d.setSub(lookAt, x_axis);

-

-            if(dist * dist * d.dot3(d) < size_squared)

-            {

-                cos_angle_to_view_dir = 1.0f ;

-            }

-        }

-    }

-

-    if(dist < mBoundingSphereRadius) //camera is very close

-    {

-        cos_angle_to_view_dir = 1.0f ;

-        mImportanceToCamera = 1.0f ;

-    }

-    else

-    {

-        mImportanceToCamera = LLFace::calcImportanceToCamera(cos_angle_to_view_dir, dist) ;

-    }

-

-    return true ;

-}

-

-//the projection of the face partially overlaps with the screen

-F32 LLFace::adjustPartialOverlapPixelArea(F32 cos_angle_to_view_dir, F32 radius )

-{

-    F32 screen_radius = (F32)llmax(gViewerWindow->getWindowWidthRaw(), gViewerWindow->getWindowHeightRaw()) ;

-    F32 center_angle = acosf(cos_angle_to_view_dir) ;

-    F32 d = center_angle * LLDrawable::sCurPixelAngle ;

-

-    if(d + radius > screen_radius + 5.f)

-    {

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

-        //calculate the intersection area of two circles

-        //F32 radius_square = radius * radius ;

-        //F32 d_square = d * d ;

-        //F32 screen_radius_square = screen_radius * screen_radius ;

-        //face_area =

-        //  radius_square * acosf((d_square + radius_square - screen_radius_square)/(2 * d * radius)) +

-        //  screen_radius_square * acosf((d_square + screen_radius_square - radius_square)/(2 * d * screen_radius)) -

-        //  0.5f * sqrtf((-d + radius + screen_radius) * (d + radius - screen_radius) * (d - radius + screen_radius) * (d + radius + screen_radius)) ;

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

-

-        //the above calculation is too expensive

-        //the below is a good estimation: bounding box of the bounding sphere:

-        F32 alpha = 0.5f * (radius + screen_radius - d) / radius ;

-        alpha = llclamp(alpha, 0.f, 1.f) ;

-        return alpha * alpha ;

-    }

-    return 1.0f ;

-}

-

-const S8 FACE_IMPORTANCE_LEVEL = 4 ;

-const F32 FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[FACE_IMPORTANCE_LEVEL][2] = //{distance, importance_weight}

-    {{16.1f, 1.0f}, {32.1f, 0.5f}, {48.1f, 0.2f}, {96.1f, 0.05f} } ;

-const F32 FACE_IMPORTANCE_TO_CAMERA_OVER_ANGLE[FACE_IMPORTANCE_LEVEL][2] =    //{cos(angle), importance_weight}

-    {{0.985f /*cos(10 degrees)*/, 1.0f}, {0.94f /*cos(20 degrees)*/, 0.8f}, {0.866f /*cos(30 degrees)*/, 0.64f}, {0.0f, 0.36f}} ;

-

-//static

-F32 LLFace::calcImportanceToCamera(F32 cos_angle_to_view_dir, F32 dist)

-{

-    F32 importance = 0.f ;

-

-    if(cos_angle_to_view_dir > LLViewerCamera::getInstance()->getCosHalfFov() &&

-        dist < FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[FACE_IMPORTANCE_LEVEL - 1][0])

-    {

-        LLViewerCamera* camera = LLViewerCamera::getInstance();

-        F32 camera_moving_speed = camera->getAverageSpeed() ;

-        F32 camera_angular_speed = camera->getAverageAngularSpeed();

-

-        if(camera_moving_speed > 10.0f || camera_angular_speed > 1.0f)

-        {

-            //if camera moves or rotates too fast, ignore the importance factor

-            return 0.f ;

-        }

-

-        S32 i = 0 ;

-        for(i = 0; i < FACE_IMPORTANCE_LEVEL && dist > FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[i][0]; ++i);

-        i = llmin(i, FACE_IMPORTANCE_LEVEL - 1) ;

-        F32 dist_factor = FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[i][1] ;

-

-        for(i = 0; i < FACE_IMPORTANCE_LEVEL && cos_angle_to_view_dir < FACE_IMPORTANCE_TO_CAMERA_OVER_ANGLE[i][0] ; ++i) ;

-        i = llmin(i, FACE_IMPORTANCE_LEVEL - 1) ;

-        importance = dist_factor * FACE_IMPORTANCE_TO_CAMERA_OVER_ANGLE[i][1] ;

-    }

-

-    return importance ;

-}

-

-//static

-F32 LLFace::adjustPixelArea(F32 importance, F32 pixel_area)

-{

-    if(pixel_area > LLViewerTexture::sMaxSmallImageSize)

-    {

-        if(importance < LEAST_IMPORTANCE) //if the face is not important, do not load hi-res.

-        {

-            static const F32 MAX_LEAST_IMPORTANCE_IMAGE_SIZE = 128.0f * 128.0f ;

-            pixel_area = llmin(pixel_area * 0.5f, MAX_LEAST_IMPORTANCE_IMAGE_SIZE) ;

-        }

-        else if(pixel_area > LLViewerTexture::sMinLargeImageSize) //if is large image, shrink face_area by considering the partial overlapping.

-        {

-            if(importance < LEAST_IMPORTANCE_FOR_LARGE_IMAGE)//if the face is not important, do not load hi-res.

-            {

-                pixel_area = LLViewerTexture::sMinLargeImageSize ;

-            }

-        }

-    }

-

-    return pixel_area ;

-}

-

-bool LLFace::verify(const U32* indices_array) const

-{

-    bool ok = true;

-

-    if( mVertexBuffer.isNull() )

-    { //no vertex buffer, face is implicitly valid

-        return true;

-    }

-

-    // First, check whether the face data fits within the pool's range.

-    if ((mGeomIndex + mGeomCount) > mVertexBuffer->getNumVerts())

-    {

-        ok = false;

-        LL_INFOS() << "Face references invalid vertices!" << LL_ENDL;

-    }

-

-    S32 indices_count = (S32)getIndicesCount();

-

-    if (!indices_count)

-    {

-        return true;

-    }

-

-    if (indices_count > LL_MAX_INDICES_COUNT)

-    {

-        ok = false;

-        LL_INFOS() << "Face has bogus indices count" << LL_ENDL;

-    }

-

-    if (mIndicesIndex + mIndicesCount > mVertexBuffer->getNumIndices())

-    {

-        ok = false;

-        LL_INFOS() << "Face references invalid indices!" << LL_ENDL;

-    }

-

-#if 0

-    S32 geom_start = getGeomStart();

-    S32 geom_count = mGeomCount;

-

-    const U32 *indicesp = indices_array ? indices_array + mIndicesIndex : getRawIndices();

-

-    for (S32 i = 0; i < indices_count; i++)

-    {

-        S32 delta = indicesp[i] - geom_start;

-        if (0 > delta)

-        {

-            LL_WARNS() << "Face index too low!" << LL_ENDL;

-            LL_INFOS() << "i:" << i << " Index:" << indicesp[i] << " GStart: " << geom_start << LL_ENDL;

-            ok = false;

-        }

-        else if (delta >= geom_count)

-        {

-            LL_WARNS() << "Face index too high!" << LL_ENDL;

-            LL_INFOS() << "i:" << i << " Index:" << indicesp[i] << " GEnd: " << geom_start + geom_count << LL_ENDL;

-            ok = false;

-        }

-    }

-#endif

-

-    if (!ok)

-    {

-        printDebugInfo();

-    }

-    return ok;

-}

-

-

-void LLFace::setViewerObject(LLViewerObject* objp)

-{

-    mVObjp = objp;

-}

-

-

-const LLMatrix4& LLFace::getRenderMatrix() const

-{

-    return mDrawablep->getRenderMatrix();

-}

-

-//============================================================================

-// From llface.inl

-

-S32 LLFace::getColors(LLStrider<LLColor4U> &colors)

-{

-    if (!mGeomCount)

-    {

-        return -1;

-    }

-

-    // llassert(mGeomIndex >= 0);

-    mVertexBuffer->getColorStrider(colors, mGeomIndex, mGeomCount);

-    return mGeomIndex;

-}

-

-S32 LLFace::getIndices(LLStrider<U16> &indicesp)

-{

-    mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex, mIndicesCount);

-    llassert(indicesp[0] != indicesp[1]);

-    return mIndicesIndex;

-}

-

-LLVector3 LLFace::getPositionAgent() const

-{

-    if (mDrawablep->isStatic())

-    {

-        return mCenterAgent;

-    }

-    else

-    {

-        return mCenterLocal * getRenderMatrix();

-    }

-}

-

-LLViewerTexture* LLFace::getTexture(U32 ch) const

-{

-    llassert(ch < LLRender::NUM_TEXTURE_CHANNELS);

-

-    return mTexture[ch] ;

-}

-

-void LLFace::setVertexBuffer(LLVertexBuffer* buffer)

-{

-    if (buffer)

-    {

-        LLSculptIDSize::instance().inc(mDrawablep, buffer->getSize() + buffer->getIndicesSize());

-    }

-

-    if (mVertexBuffer)

-    {

-        LLSculptIDSize::instance().dec(mDrawablep);

-    }

-

-    mVertexBuffer = buffer;

-    llassert(verify());

-}

-

-void LLFace::clearVertexBuffer()

-{

-    if (mVertexBuffer)

-    {

-        LLSculptIDSize::instance().dec(mDrawablep);

-    }

-

-    mVertexBuffer = NULL;

-}

-

-S32 LLFace::getRiggedIndex(U32 type) const

-{

-    if (mRiggedIndex.empty())

-    {

-        return -1;

-    }

-

-    llassert(type < mRiggedIndex.size());

-

-    return mRiggedIndex[type];

-}

-

-U64 LLFace::getSkinHash()

-{

-    return mSkinInfo ? mSkinInfo->mHash : 0;

-}

-

-bool LLFace::isInAlphaPool() const

-{

-    return  getPoolType() == LLDrawPool::POOL_ALPHA ||

-        getPoolType() == LLDrawPool::POOL_ALPHA_PRE_WATER ||

-        getPoolType() == LLDrawPool::POOL_ALPHA_POST_WATER;

-}

+/**
+ * @file llface.cpp
+ * @brief LLFace class implementation
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "lldrawable.h" // lldrawable needs to be included before llface
+#include "llface.h"
+#include "llviewertextureanim.h"
+
+#include "llviewercontrol.h"
+#include "llvolume.h"
+#include "m3math.h"
+#include "llmatrix4a.h"
+#include "v3color.h"
+
+#include "lldefs.h"
+
+#include "lldrawpoolavatar.h"
+#include "lldrawpoolbump.h"
+#include "llgl.h"
+#include "llrender.h"
+#include "lllightconstants.h"
+#include "llsky.h"
+#include "llviewercamera.h"
+#include "llviewertexturelist.h"
+#include "llvopartgroup.h"
+#include "llvovolume.h"
+#include "pipeline.h"
+#include "llviewerregion.h"
+#include "llviewerwindow.h"
+#include "llviewershadermgr.h"
+#include "llviewertexture.h"
+#include "llvoavatar.h"
+#include "llsculptidsize.h"
+#include "llmeshrepository.h"
+
+#if LL_LINUX
+// Work-around spurious used before init warning on Vector4a
+//
+#pragma GCC diagnostic ignored "-Wuninitialized"
+#endif
+
+#define LL_MAX_INDICES_COUNT 1000000
+
+static LLStaticHashedString sTextureIndexIn("texture_index_in");
+static LLStaticHashedString sColorIn("color_in");
+
+bool LLFace::sSafeRenderSelect = true; // false
+
+
+#define DOTVEC(a,b) (a.mV[0]*b.mV[0] + a.mV[1]*b.mV[1] + a.mV[2]*b.mV[2])
+
+/*
+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);
+}
+
+////////////////////
+//
+// LLFace implementation
+//
+
+void LLFace::init(LLDrawable* drawablep, LLViewerObject* objp)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE;
+    mLastUpdateTime = gFrameTimeSeconds;
+    mLastMoveTime = 0.f;
+    mLastSkinTime = gFrameTimeSeconds;
+    mVSize = 0.f;
+    mPixelArea = 16.f;
+    mState      = GLOBAL;
+    mDrawPoolp  = NULL;
+    mPoolType = 0;
+    mCenterLocal = objp->getPosition();
+    mCenterAgent = drawablep->getPositionAgent();
+    mDistance   = 0.f;
+
+    mGeomCount      = 0;
+    mGeomIndex      = 0;
+    mIndicesCount   = 0;
+
+    //special value to indicate uninitialized position
+    mIndicesIndex   = 0xFFFFFFFF;
+
+    for (U32 i = 0; i < LLRender::NUM_TEXTURE_CHANNELS; ++i)
+    {
+        mIndexInTex[i] = 0;
+        mTexture[i] = NULL;
+    }
+
+    mTEOffset       = -1;
+    mTextureIndex = FACE_DO_NOT_BATCH_TEXTURES;
+
+    setDrawable(drawablep);
+    mVObjp = objp;
+
+    mReferenceIndex = -1;
+
+    mTextureMatrix = NULL;
+    mDrawInfo = NULL;
+
+    mFaceColor = LLColor4(1,0,0,1);
+
+    mImportanceToCamera = 0.f ;
+    mBoundingSphereRadius = 0.0f ;
+
+    mHasMedia = false ;
+    mIsMediaAllowed = true;
+}
+
+void LLFace::destroy()
+{
+    if (gDebugGL)
+    {
+        gPipeline.checkReferences(this);
+    }
+
+    for (U32 i = 0; i < LLRender::NUM_TEXTURE_CHANNELS; ++i)
+    {
+        if(mTexture[i].notNull())
+        {
+            mTexture[i]->removeFace(i, this) ;
+            mTexture[i] = NULL;
+        }
+    }
+
+    if (isState(LLFace::PARTICLE))
+    {
+        clearState(LLFace::PARTICLE);
+    }
+
+    if (mDrawPoolp)
+    {
+        mDrawPoolp->removeFace(this);
+        mDrawPoolp = NULL;
+    }
+
+    if (mTextureMatrix)
+    {
+        delete mTextureMatrix;
+        mTextureMatrix = NULL;
+
+        if (mDrawablep)
+        {
+            LLSpatialGroup* group = mDrawablep->getSpatialGroup();
+            if (group)
+            {
+                group->dirtyGeom();
+                gPipeline.markRebuild(group);
+            }
+        }
+    }
+
+    setDrawInfo(NULL);
+
+    mDrawablep = NULL;
+    mVObjp = NULL;
+}
+
+void LLFace::setWorldMatrix(const LLMatrix4 &mat)
+{
+    LL_ERRS() << "Faces on this drawable are not independently modifiable\n" << LL_ENDL;
+}
+
+void LLFace::setPool(LLFacePool* pool)
+{
+    mDrawPoolp = pool;
+}
+
+void LLFace::setPool(LLFacePool* new_pool, LLViewerTexture *texturep)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE
+
+    if (!new_pool)
+    {
+        LL_ERRS() << "Setting pool to null!" << LL_ENDL;
+    }
+
+    if (new_pool != mDrawPoolp)
+    {
+        // Remove from old pool
+        if (mDrawPoolp)
+        {
+            mDrawPoolp->removeFace(this);
+
+            if (mDrawablep)
+            {
+                gPipeline.markRebuild(mDrawablep, LLDrawable::REBUILD_ALL);
+            }
+        }
+        mGeomIndex = 0;
+
+        // Add to new pool
+        if (new_pool)
+        {
+            new_pool->addFace(this);
+        }
+        mDrawPoolp = new_pool;
+    }
+
+    setTexture(texturep) ;
+}
+
+void LLFace::setTexture(U32 ch, LLViewerTexture* tex)
+{
+    llassert(ch < LLRender::NUM_TEXTURE_CHANNELS);
+
+    if(mTexture[ch] == tex)
+    {
+        return ;
+    }
+
+    if(mTexture[ch].notNull())
+    {
+        mTexture[ch]->removeFace(ch, this) ;
+    }
+
+    if(tex)
+    {
+        tex->addFace(ch, this) ;
+    }
+
+    mTexture[ch] = tex ;
+}
+
+void LLFace::setTexture(LLViewerTexture* tex)
+{
+    setDiffuseMap(tex);
+}
+
+void LLFace::setDiffuseMap(LLViewerTexture* tex)
+{
+    setTexture(LLRender::DIFFUSE_MAP, tex);
+}
+
+void LLFace::setAlternateDiffuseMap(LLViewerTexture* tex)
+{
+    setTexture(LLRender::ALTERNATE_DIFFUSE_MAP, tex);
+}
+
+void LLFace::setNormalMap(LLViewerTexture* tex)
+{
+    setTexture(LLRender::NORMAL_MAP, tex);
+}
+
+void LLFace::setSpecularMap(LLViewerTexture* tex)
+{
+    setTexture(LLRender::SPECULAR_MAP, tex);
+}
+
+void LLFace::dirtyTexture()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE
+
+    LLDrawable* drawablep = getDrawable();
+
+    if (mVObjp.notNull() && mVObjp->getVolume())
+    {
+        for (U32 ch = 0; ch < LLRender::NUM_TEXTURE_CHANNELS; ++ch)
+        {
+            if (mTexture[ch].notNull() && mTexture[ch]->getComponents() == 4)
+            { //dirty texture on an alpha object should be treated as an LoD update
+                LLVOVolume* vobj = drawablep->getVOVolume();
+                if (vobj)
+                {
+                    vobj->mLODChanged = true;
+
+                    vobj->updateVisualComplexity();
+                }
+                gPipeline.markRebuild(drawablep, LLDrawable::REBUILD_VOLUME);
+            }
+        }
+    }
+
+    gPipeline.markTextured(drawablep);
+}
+
+void LLFace::switchTexture(U32 ch, LLViewerTexture* new_texture)
+{
+    llassert(ch < LLRender::NUM_TEXTURE_CHANNELS);
+
+    if(mTexture[ch] == new_texture)
+    {
+        return ;
+    }
+
+    if(!new_texture)
+    {
+        LL_ERRS() << "Can not switch to a null texture." << LL_ENDL;
+        return;
+    }
+
+    llassert(mTexture[ch].notNull());
+
+    if (ch == LLRender::DIFFUSE_MAP)
+    {
+        getViewerObject()->changeTEImage(mTEOffset, new_texture) ;
+    }
+
+    setTexture(ch, new_texture) ;
+    dirtyTexture();
+}
+
+void LLFace::setTEOffset(const S32 te_offset)
+{
+    mTEOffset = te_offset;
+}
+
+
+void LLFace::setFaceColor(const LLColor4& color)
+{
+    mFaceColor = color;
+    setState(USE_FACE_COLOR);
+}
+
+void LLFace::unsetFaceColor()
+{
+    clearState(USE_FACE_COLOR);
+}
+
+void LLFace::setDrawable(LLDrawable *drawable)
+{
+    mDrawablep  = drawable;
+    mXform      = &drawable->mXform;
+}
+
+void LLFace::setSize(S32 num_vertices, S32 num_indices, bool align)
+{
+    if (align)
+    {
+        //allocate vertices in blocks of 4 for alignment
+        num_vertices = (num_vertices + 0x3) & ~0x3;
+    }
+
+    if (mGeomCount != num_vertices ||
+        mIndicesCount != num_indices)
+    {
+        mGeomCount    = num_vertices;
+        mIndicesCount = num_indices;
+        mVertexBuffer = NULL;
+    }
+
+    llassert(verify());
+}
+
+void LLFace::setGeomIndex(U16 idx)
+{
+    if (mGeomIndex != idx)
+    {
+        mGeomIndex = idx;
+        mVertexBuffer = NULL;
+    }
+}
+
+void LLFace::setTextureIndex(U8 index)
+{
+    if (index != mTextureIndex)
+    {
+        mTextureIndex = index;
+
+        if (mTextureIndex != FACE_DO_NOT_BATCH_TEXTURES)
+        {
+            mDrawablep->setState(LLDrawable::REBUILD_POSITION);
+        }
+        else
+        {
+            if (mDrawInfo && !mDrawInfo->mTextureList.empty())
+            {
+                LL_ERRS() << "Face with no texture index references indexed texture draw info." << LL_ENDL;
+            }
+        }
+    }
+}
+
+void LLFace::setIndicesIndex(S32 idx)
+{
+    if (mIndicesIndex != idx)
+    {
+        mIndicesIndex = idx;
+        mVertexBuffer = NULL;
+    }
+}
+
+//============================================================================
+
+U16 LLFace::getGeometryAvatar(
+                        LLStrider<LLVector3> &vertices,
+                        LLStrider<LLVector3> &normals,
+                        LLStrider<LLVector2> &tex_coords,
+                        LLStrider<F32>       &vertex_weights,
+                        LLStrider<LLVector4> &clothing_weights)
+{
+    if (mVertexBuffer.notNull())
+    {
+        mVertexBuffer->getVertexStrider      (vertices, mGeomIndex, mGeomCount);
+        mVertexBuffer->getNormalStrider      (normals, mGeomIndex, mGeomCount);
+        mVertexBuffer->getTexCoord0Strider    (tex_coords, mGeomIndex, mGeomCount);
+        mVertexBuffer->getWeightStrider(vertex_weights, mGeomIndex, mGeomCount);
+        mVertexBuffer->getClothWeightStrider(clothing_weights, mGeomIndex, mGeomCount);
+    }
+
+    return mGeomIndex;
+}
+
+U16 LLFace::getGeometry(LLStrider<LLVector3> &vertices, LLStrider<LLVector3> &normals,
+                        LLStrider<LLVector2> &tex_coords, LLStrider<U16> &indicesp)
+{
+    if (mVertexBuffer.notNull())
+    {
+        mVertexBuffer->getVertexStrider(vertices,   mGeomIndex, mGeomCount);
+        if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_NORMAL))
+        {
+            mVertexBuffer->getNormalStrider(normals,    mGeomIndex, mGeomCount);
+        }
+        if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD0))
+        {
+            mVertexBuffer->getTexCoord0Strider(tex_coords, mGeomIndex, mGeomCount);
+        }
+
+        mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex, mIndicesCount);
+    }
+
+    return mGeomIndex;
+}
+
+void LLFace::updateCenterAgent()
+{
+    if (mDrawablep->isActive())
+    {
+        mCenterAgent = mCenterLocal * getRenderMatrix();
+    }
+    else
+    {
+        mCenterAgent = mCenterLocal;
+    }
+}
+
+void LLFace::renderSelected(LLViewerTexture *imagep, const LLColor4& color)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE
+
+    if (mDrawablep == NULL || mDrawablep->getSpatialGroup() == NULL)
+    {
+        return;
+    }
+
+    mDrawablep->getSpatialGroup()->rebuildGeom();
+    mDrawablep->getSpatialGroup()->rebuildMesh();
+
+    if(mVertexBuffer.isNull())
+    {
+        return;
+    }
+
+    if (mGeomCount > 0 && mIndicesCount > 0)
+    {
+        gGL.getTexUnit(0)->bind(imagep);
+
+        gGL.pushMatrix();
+        if (mDrawablep->isActive())
+        {
+            gGL.multMatrix((GLfloat*)mDrawablep->getRenderMatrix().mMatrix);
+        }
+        else
+        {
+            gGL.multMatrix((GLfloat*)mDrawablep->getRegion()->mRenderMatrix.mMatrix);
+        }
+
+        gGL.diffuseColor4fv(color.mV);
+
+        if (mDrawablep->isState(LLDrawable::RIGGED))
+        {
+#if 0 // TODO --  there is no way this won't destroy our GL machine as implemented, rewrite it to not rely on software skinning
+            LLVOVolume* volume = mDrawablep->getVOVolume();
+            if (volume)
+            {
+                LLRiggedVolume* rigged = volume->getRiggedVolume();
+                if (rigged)
+                {
+                    // called when selecting a face during edit of a mesh object
+                    LLGLEnable offset(GL_POLYGON_OFFSET_FILL);
+                    glPolygonOffset(-1.f, -1.f);
+                    gGL.multMatrix((F32*) volume->getRelativeXform().mMatrix);
+                    const LLVolumeFace& vol_face = rigged->getVolumeFace(getTEOffset());
+                    LLVertexBuffer::unbind();
+                    glVertexPointer(3, GL_FLOAT, 16, vol_face.mPositions);
+                    if (vol_face.mTexCoords)
+                    {
+                        glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+                        glTexCoordPointer(2, GL_FLOAT, 8, vol_face.mTexCoords);
+                    }
+                    gGL.syncMatrices();
+                    glDrawElements(GL_TRIANGLES, vol_face.mNumIndices, GL_UNSIGNED_SHORT, vol_face.mIndices);
+                    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+                }
+            }
+#endif
+        }
+        else
+        {
+            // cheaters sometimes prosper...
+            //
+            mVertexBuffer->setBuffer();
+            mVertexBuffer->draw(LLRender::TRIANGLES, mIndicesCount, mIndicesIndex);
+        }
+
+        gGL.popMatrix();
+    }
+}
+
+
+void renderFace(LLDrawable* drawable, LLFace *face)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE
+
+    LLVOVolume* vobj = drawable->getVOVolume();
+    if (vobj)
+    {
+        LLVolume* volume = NULL;
+
+        if (drawable->isState(LLDrawable::RIGGED))
+        {
+            volume = vobj->getRiggedVolume();
+        }
+        else
+        {
+            volume = vobj->getVolume();
+        }
+
+        if (volume)
+        {
+            const LLVolumeFace& vol_face = volume->getVolumeFace(face->getTEOffset());
+            LLVertexBuffer::drawElements(LLRender::TRIANGLES, vol_face.mPositions, NULL, vol_face.mNumIndices, vol_face.mIndices);
+        }
+    }
+}
+
+void LLFace::renderOneWireframe(const LLColor4 &color, F32 fogCfx, bool wireframe_selection, bool bRenderHiddenSelections, bool shader)
+{
+    if (bRenderHiddenSelections)
+    {
+        gGL.blendFunc(LLRender::BF_SOURCE_COLOR, LLRender::BF_ONE);
+        LLGLDepthTest gls_depth(GL_TRUE, GL_FALSE, GL_GEQUAL);
+        if (shader)
+        {
+            gGL.diffuseColor4f(color.mV[VRED], color.mV[VGREEN], color.mV[VBLUE], 0.4f);
+            renderFace(mDrawablep, this);
+        }
+        else
+        {
+            gGL.flush();
+            {
+                gGL.diffuseColor4f(color.mV[VRED], color.mV[VGREEN], color.mV[VBLUE], 0.4f);
+                renderFace(mDrawablep, this);
+            }
+        }
+    }
+
+    gGL.flush();
+    gGL.setSceneBlendType(LLRender::BT_ALPHA);
+
+    gGL.diffuseColor4f(color.mV[VRED] * 2, color.mV[VGREEN] * 2, color.mV[VBLUE] * 2, color.mV[VALPHA]);
+
+    {
+        LLGLDisable depth(wireframe_selection ? 0 : GL_BLEND);
+        //LLGLEnable stencil(wireframe_selection ? 0 : GL_STENCIL_TEST);
+
+        if (!wireframe_selection)
+        { //modify wireframe into outline selection mode
+            glStencilFunc(GL_NOTEQUAL, 2, 0xffff);
+            glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+        }
+
+        LLGLEnable offset(GL_POLYGON_OFFSET_LINE);
+        glPolygonOffset(3.f, 3.f);
+        glLineWidth(5.f);
+        glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+        renderFace(mDrawablep, this);
+    }
+}
+
+void LLFace::setDrawInfo(LLDrawInfo* draw_info)
+{
+    mDrawInfo = draw_info;
+}
+
+void LLFace::printDebugInfo() const
+{
+    LLFacePool *poolp = getPool();
+    LL_INFOS() << "Object: " << getViewerObject()->mID << LL_ENDL;
+    if (getDrawable())
+    {
+        LL_INFOS() << "Type: " << LLPrimitive::pCodeToString(getDrawable()->getVObj()->getPCode()) << LL_ENDL;
+    }
+    if (getTexture())
+    {
+        LL_INFOS() << "Texture: " << getTexture() << " Comps: " << (U32)getTexture()->getComponents() << LL_ENDL;
+    }
+    else
+    {
+        LL_INFOS() << "No texture: " << LL_ENDL;
+    }
+
+    LL_INFOS() << "Face: " << this << LL_ENDL;
+    LL_INFOS() << "State: " << getState() << LL_ENDL;
+    LL_INFOS() << "Geom Index Data:" << LL_ENDL;
+    LL_INFOS() << "--------------------" << LL_ENDL;
+    LL_INFOS() << "GI: " << mGeomIndex << " Count:" << mGeomCount << LL_ENDL;
+    LL_INFOS() << "Face Index Data:" << LL_ENDL;
+    LL_INFOS() << "--------------------" << LL_ENDL;
+    LL_INFOS() << "II: " << mIndicesIndex << " Count:" << mIndicesCount << LL_ENDL;
+    LL_INFOS() << LL_ENDL;
+
+    if (poolp)
+    {
+        poolp->printDebugInfo();
+
+        S32 pool_references = 0;
+        for (std::vector<LLFace*>::iterator iter = poolp->mReferences.begin();
+             iter != poolp->mReferences.end(); iter++)
+        {
+            LLFace *facep = *iter;
+            if (facep == this)
+            {
+                LL_INFOS() << "Pool reference: " << pool_references << LL_ENDL;
+                pool_references++;
+            }
+        }
+
+        if (pool_references != 1)
+        {
+            LL_INFOS() << "Incorrect number of pool references!" << LL_ENDL;
+        }
+    }
+
+#if 0
+    LL_INFOS() << "Indices:" << LL_ENDL;
+    LL_INFOS() << "--------------------" << LL_ENDL;
+
+    const U32 *indicesp = getRawIndices();
+    S32 indices_count = getIndicesCount();
+    S32 geom_start = getGeomStart();
+
+    for (S32 i = 0; i < indices_count; i++)
+    {
+        LL_INFOS() << i << ":" << indicesp[i] << ":" << (S32)(indicesp[i] - geom_start) << LL_ENDL;
+    }
+    LL_INFOS() << LL_ENDL;
+
+    LL_INFOS() << "Vertices:" << LL_ENDL;
+    LL_INFOS() << "--------------------" << LL_ENDL;
+    for (S32 i = 0; i < mGeomCount; i++)
+    {
+        LL_INFOS() << mGeomIndex + i << ":" << poolp->getVertex(mGeomIndex + i) << LL_ENDL;
+    }
+    LL_INFOS() << LL_ENDL;
+#endif
+}
+
+// Transform the texture coordinates for this face.
+static void xform(LLVector2 &tex_coord, F32 cosAng, F32 sinAng, F32 offS, F32 offT, F32 magS, F32 magT)
+{
+    // New, good way
+    F32 s = tex_coord.mV[0];
+    F32 t = tex_coord.mV[1];
+
+    // Texture transforms are done about the center of the face.
+    s -= 0.5;
+    t -= 0.5;
+
+    // Handle rotation
+    F32 temp = s;
+    s  = s     * cosAng + t * sinAng;
+    t  = -temp * sinAng + t * cosAng;
+
+    // Then scale
+    s *= magS;
+    t *= magT;
+
+    // Then offset
+    s += offS + 0.5f;
+    t += offT + 0.5f;
+
+    tex_coord.mV[0] = s;
+    tex_coord.mV[1] = t;
+}
+
+// Transform the texture coordinates for this face.
+static void xform4a(LLVector4a &tex_coord, const LLVector4a& trans, const LLVector4Logical& mask, const LLVector4a& rot0, const LLVector4a& rot1, const LLVector4a& offset, const LLVector4a& scale)
+{
+    //tex coord is two coords, <s0, t0, s1, t1>
+    LLVector4a st;
+
+    // Texture transforms are done about the center of the face.
+    st.setAdd(tex_coord, trans);
+
+    // Handle rotation
+    LLVector4a rot_st;
+
+    // <s0 * cosAng, s0*-sinAng, s1*cosAng, s1*-sinAng>
+    LLVector4a s0;
+    s0.splat(st, 0);
+    LLVector4a s1;
+    s1.splat(st, 2);
+    LLVector4a ss;
+    ss.setSelectWithMask(mask, s1, s0);
+
+    LLVector4a a;
+    a.setMul(rot0, ss);
+
+    // <t0*sinAng, t0*cosAng, t1*sinAng, t1*cosAng>
+    LLVector4a t0;
+    t0.splat(st, 1);
+    LLVector4a t1;
+    t1.splat(st, 3);
+    LLVector4a tt;
+    tt.setSelectWithMask(mask, t1, t0);
+
+    LLVector4a b;
+    b.setMul(rot1, tt);
+
+    st.setAdd(a,b);
+
+    // Then scale
+    st.mul(scale);
+
+    // Then offset
+    tex_coord.setAdd(st, offset);
+}
+
+
+bool less_than_max_mag(const LLVector4a& vec)
+{
+    LLVector4a MAX_MAG;
+    MAX_MAG.splat(1024.f*1024.f);
+
+    LLVector4a val;
+    val.setAbs(vec);
+
+    S32 lt = val.lessThan(MAX_MAG).getGatheredBits() & 0x7;
+
+    return lt == 0x7;
+}
+
+bool LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f,
+                             const LLMatrix4& mat_vert_in, bool global_volume)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE
+
+    //get bounding box
+    if (mDrawablep->isState(LLDrawable::REBUILD_VOLUME | LLDrawable::REBUILD_POSITION | LLDrawable::REBUILD_RIGGED))
+    {
+        if (f >= volume.getNumVolumeFaces())
+        {
+            LL_WARNS() << "Generating bounding box for invalid face index!" << LL_ENDL;
+            f = 0;
+        }
+
+        const LLVolumeFace &face = volume.getVolumeFace(f);
+
+        LL_DEBUGS("RiggedBox") << "updating extents for face " << f
+                               << " starting extents " << mExtents[0] << ", " << mExtents[1]
+                               << " starting vf extents " << face.mExtents[0] << ", " << face.mExtents[1]
+                               << " num verts " << face.mNumVertices << LL_ENDL;
+
+        // MAINT-8264 - stray vertices, especially in low LODs, cause bounding box errors.
+        if (face.mNumVertices < 3)
+        {
+            LL_DEBUGS("RiggedBox") << "skipping face " << f << ", bad num vertices "
+                                   << face.mNumVertices << " " << face.mNumIndices << " " << face.mWeights << LL_ENDL;
+            return false;
+        }
+
+        //VECTORIZE THIS
+        LLMatrix4a mat_vert;
+        mat_vert.loadu(mat_vert_in);
+        LLVector4a new_extents[2];
+
+        llassert(less_than_max_mag(face.mExtents[0]));
+        llassert(less_than_max_mag(face.mExtents[1]));
+
+        matMulBoundBox(mat_vert, face.mExtents, mExtents);
+
+        LL_DEBUGS("RiggedBox") << "updated extents for face " << f
+                               << " bbox gave extents " << mExtents[0] << ", " << mExtents[1] << LL_ENDL;
+
+        if (!mDrawablep->isActive())
+        {   // Shift position for region
+            LLVector4a offset;
+            offset.load3(mDrawablep->getRegion()->getOriginAgent().mV);
+            mExtents[0].add(offset);
+            mExtents[1].add(offset);
+            LL_DEBUGS("RiggedBox") << "updating extents for face " << f
+                                   << " not active, added offset " << offset << LL_ENDL;
+        }
+
+        LL_DEBUGS("RiggedBox") << "updated extents for face " << f
+                               << " to " << mExtents[0] << ", " << mExtents[1] << LL_ENDL;
+        LLVector4a t;
+        t.setAdd(mExtents[0],mExtents[1]);
+        t.mul(0.5f);
+
+        mCenterLocal.set(t.getF32ptr());
+
+        t.setSub(mExtents[1],mExtents[0]);
+        mBoundingSphereRadius = t.getLength3().getF32()*0.5f;
+
+        updateCenterAgent();
+    }
+
+    return true;
+}
+
+
+
+// convert surface coordinates to texture coordinates, based on
+// the values in the texture entry.  probably should be
+// integrated with getGeometryVolume() for its texture coordinate
+// generation - but i'll leave that to someone more familiar
+// with the implications.
+LLVector2 LLFace::surfaceToTexture(LLVector2 surface_coord, const LLVector4a& position, const LLVector4a& normal)
+{
+    LLVector2 tc = surface_coord;
+
+    const LLTextureEntry *tep = getTextureEntry();
+
+    if (tep == NULL)
+    {
+        // can't do much without the texture entry
+        return surface_coord;
+    }
+
+    //VECTORIZE THIS
+    // see if we have a non-default mapping
+    U8 texgen = getTextureEntry()->getTexGen();
+    if (texgen != LLTextureEntry::TEX_GEN_DEFAULT)
+    {
+        LLVector4a& center = *(mDrawablep->getVOVolume()->getVolume()->getVolumeFace(mTEOffset).mCenter);
+
+        LLVector4a volume_position;
+        LLVector3 v_position(position.getF32ptr());
+
+        volume_position.load3(mDrawablep->getVOVolume()->agentPositionToVolume(v_position).mV);
+
+        if (!mDrawablep->getVOVolume()->isVolumeGlobal())
+        {
+            LLVector4a scale;
+            scale.load3(mVObjp->getScale().mV);
+            volume_position.mul(scale);
+        }
+
+        LLVector4a volume_normal;
+        LLVector3 v_normal(normal.getF32ptr());
+        volume_normal.load3(mDrawablep->getVOVolume()->agentDirectionToVolume(v_normal).mV);
+        volume_normal.normalize3fast();
+
+        if (texgen == LLTextureEntry::TEX_GEN_PLANAR)
+        {
+            planarProjection(tc, volume_normal, center, volume_position);
+        }
+    }
+
+    if (mTextureMatrix) // if we have a texture matrix, use it
+    {
+        LLVector3 tc3(tc);
+        tc3 = tc3 * *mTextureMatrix;
+        tc = LLVector2(tc3);
+    }
+
+    else // otherwise use the texture entry parameters
+    {
+        xform(tc, cos(tep->getRotation()), sin(tep->getRotation()),
+              tep->mOffsetS, tep->mOffsetT, tep->mScaleS, tep->mScaleT);
+    }
+
+
+    return tc;
+}
+
+// Returns scale compared to default texgen, and face orientation as calculated
+// by planarProjection(). This is needed to match planar texgen parameters.
+void LLFace::getPlanarProjectedParams(LLQuaternion* face_rot, LLVector3* face_pos, F32* scale) const
+{
+    const LLMatrix4& vol_mat = getWorldMatrix();
+    const LLVolumeFace& vf = getViewerObject()->getVolume()->getVolumeFace(mTEOffset);
+    if (! (vf.mNormals && vf.mTangents))
+    {
+        return;
+    }
+    const LLVector4a& normal4a = *vf.mNormals;
+    const LLVector4a& tangent  = *vf.mTangents;
+
+    LLVector4a binormal4a;
+    binormal4a.setCross3(normal4a, tangent);
+    binormal4a.mul(tangent.getF32ptr()[3]);
+
+    LLVector2 projected_binormal;
+    planarProjection(projected_binormal, normal4a, *vf.mCenter, binormal4a);
+    projected_binormal -= LLVector2(0.5f, 0.5f); // this normally happens in xform()
+    *scale = projected_binormal.length();
+    // rotate binormal to match what planarProjection() thinks it is,
+    // then find rotation from that:
+    projected_binormal.normalize();
+    F32 ang = acos(projected_binormal.mV[VY]);
+    ang = (projected_binormal.mV[VX] < 0.f) ? -ang : ang;
+
+    //VECTORIZE THIS
+    LLVector3 binormal(binormal4a.getF32ptr());
+    LLVector3 normal(normal4a.getF32ptr());
+    binormal.rotVec(ang, normal);
+    LLQuaternion local_rot( binormal % normal, binormal, normal );
+    *face_rot = local_rot * vol_mat.quaternion();
+    *face_pos = vol_mat.getTranslation();
+}
+
+// Returns the necessary texture transform to align this face's TE to align_to's TE
+bool LLFace::calcAlignedPlanarTE(const LLFace* align_to,  LLVector2* res_st_offset,
+                                 LLVector2* res_st_scale, F32* res_st_rot, LLRender::eTexIndex map) const
+{
+    if (!align_to)
+    {
+        return false;
+    }
+    const LLTextureEntry *orig_tep = align_to->getTextureEntry();
+    if ((orig_tep->getTexGen() != LLTextureEntry::TEX_GEN_PLANAR) ||
+        (getTextureEntry()->getTexGen() != LLTextureEntry::TEX_GEN_PLANAR))
+    {
+        return false;
+    }
+
+    F32 map_rot = 0.f, map_scaleS = 0.f, map_scaleT = 0.f, map_offsS = 0.f, map_offsT = 0.f;
+
+    LLMaterial* mat = orig_tep->getMaterialParams();
+    if (!mat && map != LLRender::DIFFUSE_MAP)
+    {
+        LL_WARNS_ONCE("llface") << "Face is set to use specular or normal map but has no material, defaulting to diffuse" << LL_ENDL;
+        map = LLRender::DIFFUSE_MAP;
+    }
+
+    switch (map)
+    {
+    case LLRender::DIFFUSE_MAP:
+        map_rot = orig_tep->getRotation();
+        map_scaleS = orig_tep->mScaleS;
+        map_scaleT = orig_tep->mScaleT;
+        map_offsS = orig_tep->mOffsetS;
+        map_offsT = orig_tep->mOffsetT;
+        break;
+    case LLRender::NORMAL_MAP:
+        if (mat->getNormalID().isNull())
+        {
+            return false;
+        }
+        map_rot = mat->getNormalRotation();
+        map_scaleS = mat->getNormalRepeatX();
+        map_scaleT = mat->getNormalRepeatY();
+        map_offsS = mat->getNormalOffsetX();
+        map_offsT = mat->getNormalOffsetY();
+        break;
+    case LLRender::SPECULAR_MAP:
+        if (mat->getSpecularID().isNull())
+        {
+            return false;
+        }
+        map_rot = mat->getSpecularRotation();
+        map_scaleS = mat->getSpecularRepeatX();
+        map_scaleT = mat->getSpecularRepeatY();
+        map_offsS = mat->getSpecularOffsetX();
+        map_offsT = mat->getSpecularOffsetY();
+        break;
+    default: /*make compiler happy*/
+        break;
+    }
+
+    LLVector3 orig_pos, this_pos;
+    LLQuaternion orig_face_rot, this_face_rot;
+    F32 orig_proj_scale, this_proj_scale;
+    align_to->getPlanarProjectedParams(&orig_face_rot, &orig_pos, &orig_proj_scale);
+    getPlanarProjectedParams(&this_face_rot, &this_pos, &this_proj_scale);
+
+    // The rotation of "this face's" texture:
+    LLQuaternion orig_st_rot = LLQuaternion(map_rot, LLVector3::z_axis) * orig_face_rot;
+    LLQuaternion this_st_rot = orig_st_rot * ~this_face_rot;
+    F32 x_ang, y_ang, z_ang;
+    this_st_rot.getEulerAngles(&x_ang, &y_ang, &z_ang);
+    *res_st_rot = z_ang;
+
+    // Offset and scale of "this face's" texture:
+    LLVector3 centers_dist = (this_pos - orig_pos) * ~orig_st_rot;
+    LLVector3 st_scale(map_scaleS, map_scaleT, 1.f);
+    st_scale *= orig_proj_scale;
+    centers_dist.scaleVec(st_scale);
+    LLVector2 orig_st_offset(map_offsS, map_offsT);
+
+    *res_st_offset = orig_st_offset + (LLVector2)centers_dist;
+    res_st_offset->mV[VX] -= (S32)res_st_offset->mV[VX];
+    res_st_offset->mV[VY] -= (S32)res_st_offset->mV[VY];
+
+    st_scale /= this_proj_scale;
+    *res_st_scale = (LLVector2)st_scale;
+    return true;
+}
+
+void LLFace::updateRebuildFlags()
+{
+    if (mDrawablep->isState(LLDrawable::REBUILD_VOLUME))
+    { //this rebuild is zero overhead (direct consequence of some change that affects this face)
+        mLastUpdateTime = gFrameTimeSeconds;
+    }
+    else
+    { //this rebuild is overhead (side effect of some change that does not affect this face)
+        mLastMoveTime = gFrameTimeSeconds;
+    }
+}
+
+
+bool LLFace::canRenderAsMask()
+{
+    const LLTextureEntry* te = getTextureEntry();
+    if( !te || !getViewerObject() || !getTexture() )
+    {
+        return false;
+    }
+
+    if (te->getGLTFRenderMaterial())
+    {
+        return false;
+    }
+
+    if (LLPipeline::sNoAlpha)
+    {
+        return true;
+    }
+
+    if (isState(LLFace::RIGGED))
+    { // never auto alpha-mask rigged faces
+        return false;
+    }
+
+
+    LLMaterial* mat = te->getMaterialParams();
+    if (mat && mat->getDiffuseAlphaMode() == LLMaterial::DIFFUSE_ALPHA_MODE_BLEND)
+    {
+        return false;
+    }
+
+    if ((te->getColor().mV[3] == 1.0f) && // can't treat as mask if we have face alpha
+        (te->getGlow() == 0.f) && // glowing masks are hard to implement - don't mask
+        getTexture()->getIsAlphaMask()) // texture actually qualifies for masking (lazily recalculated but expensive)
+    {
+        if (getViewerObject()->isHUDAttachment() || te->getFullbright())
+        { //hud attachments and fullbright objects are NOT subject to the deferred rendering pipe
+            return LLPipeline::sAutoMaskAlphaNonDeferred;
+        }
+        else
+        {
+            return LLPipeline::sAutoMaskAlphaDeferred;
+        }
+    }
+
+    return false;
+}
+
+//helper function for pushing primitives for transform shaders and cleaning up
+//uninitialized data on the tail, plus tracking number of expected primitives
+void push_for_transform(LLVertexBuffer* buff, U32 source_count, U32 dest_count)
+{
+    if (source_count > 0 && dest_count >= source_count) //protect against possible U32 wrapping
+    {
+        //push source primitives
+        buff->drawArrays(LLRender::POINTS, 0, source_count);
+        U32 tail = dest_count-source_count;
+        for (U32 i = 0; i < tail; ++i)
+        { //copy last source primitive into each element in tail
+            buff->drawArrays(LLRender::POINTS, source_count-1, 1);
+        }
+        gPipeline.mTransformFeedbackPrimitives += dest_count;
+    }
+}
+
+bool LLFace::getGeometryVolume(const LLVolume& volume,
+                                S32 face_index,
+                                const LLMatrix4& mat_vert_in,
+                                const LLMatrix3& mat_norm_in,
+                                U16 index_offset,
+                                bool force_rebuild,
+                                bool no_debug_assert)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE;
+    llassert(verify());
+
+    if (face_index < 0 || face_index >= volume.getNumVolumeFaces())
+    {
+        if (gDebugGL)
+        {
+            LL_WARNS() << "Face index is out of bounds!" << LL_ENDL;
+            LL_WARNS() << "Attempt get volume face out of range!"
+                " Total Faces: " << volume.getNumVolumeFaces() <<
+                " Attempt get access to: " << face_index << LL_ENDL;
+            llassert(no_debug_assert);
+        }
+        return false;
+    }
+
+    bool rigged = isState(RIGGED);
+
+    const LLVolumeFace &vf = volume.getVolumeFace(face_index);
+    S32 num_vertices = (S32)vf.mNumVertices;
+    S32 num_indices = (S32) vf.mNumIndices;
+
+    if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_OCTREE))
+    {
+        updateRebuildFlags();
+    }
+
+    if (mVertexBuffer.notNull())
+    {
+        if (num_indices + (S32) mIndicesIndex > mVertexBuffer->getNumIndices())
+        {
+            if (gDebugGL)
+            {
+                LL_WARNS() << "Index buffer overflow!" << LL_ENDL;
+                LL_WARNS() << "Indices Count: " << mIndicesCount
+                        << " VF Num Indices: " << num_indices
+                        << " Indices Index: " << mIndicesIndex
+                        << " VB Num Indices: " << mVertexBuffer->getNumIndices() << LL_ENDL;
+                LL_WARNS()  << " Face Index: " << face_index
+                        << " Pool Type: " << mPoolType << LL_ENDL;
+                llassert(no_debug_assert);
+            }
+            return false;
+        }
+
+        if (num_vertices + mGeomIndex > mVertexBuffer->getNumVerts())
+        {
+            if (gDebugGL)
+            {
+                LL_WARNS() << "Vertex buffer overflow!" << LL_ENDL;
+                llassert(no_debug_assert);
+            }
+            return false;
+        }
+    }
+
+    LLStrider<LLVector3> vert;
+    LLStrider<LLVector2> tex_coords0;
+    LLStrider<LLVector2> tex_coords1;
+    LLStrider<LLVector2> tex_coords2;
+    LLStrider<LLVector3> norm;
+    LLStrider<LLColor4U> colors;
+    LLStrider<LLVector3> tangent;
+    LLStrider<U16> indicesp;
+    LLStrider<LLVector4> wght;
+
+    bool full_rebuild = force_rebuild || mDrawablep->isState(LLDrawable::REBUILD_VOLUME);
+
+    bool global_volume = mDrawablep->getVOVolume()->isVolumeGlobal();
+    LLVector3 scale;
+    if (global_volume)
+    {
+        scale.setVec(1,1,1);
+    }
+    else
+    {
+        scale = mVObjp->getScale();
+    }
+
+    bool rebuild_pos = full_rebuild || mDrawablep->isState(LLDrawable::REBUILD_POSITION);
+    bool rebuild_color = full_rebuild || mDrawablep->isState(LLDrawable::REBUILD_COLOR);
+    bool rebuild_emissive = rebuild_color && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_EMISSIVE);
+    bool rebuild_tcoord = full_rebuild || mDrawablep->isState(LLDrawable::REBUILD_TCOORD);
+    bool rebuild_normal = rebuild_pos && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_NORMAL);
+    bool rebuild_tangent = rebuild_pos && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TANGENT);
+    bool rebuild_weights = rebuild_pos && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_WEIGHT4);
+
+    const LLTextureEntry *tep = mVObjp->getTE(face_index);
+    const U8 bump_code = tep ? tep->getBumpmap() : 0;
+
+    bool is_static = mDrawablep->isStatic();
+    bool is_global = is_static;
+
+    LLVector3 center_sum(0.f, 0.f, 0.f);
+
+    if (is_global)
+    {
+        setState(GLOBAL);
+    }
+    else
+    {
+        clearState(GLOBAL);
+    }
+
+    LLColor4U color = tep->getColor();
+
+    if (tep->getGLTFRenderMaterial())
+    {
+        color = tep->getGLTFRenderMaterial()->mBaseColor;
+    }
+
+    if (rebuild_color)
+    { //decide if shiny goes in alpha channel of color
+        if (tep &&
+            !isInAlphaPool())  // <--- alpha channel MUST contain transparency, not shiny
+    {
+            LLMaterial* mat = tep->getMaterialParams().get();
+
+            bool shiny_in_alpha = false;
+
+            //store shiny in alpha if we don't have a specular map
+            if  (!mat || mat->getSpecularID().isNull())
+            {
+                shiny_in_alpha = true;
+            }
+
+            if (shiny_in_alpha)
+            {
+                static const GLfloat SHININESS_TO_ALPHA[4] =
+                {
+                    0.0000f,
+                    0.25f,
+                    0.5f,
+                    0.75f
+                };
+
+                llassert(tep->getShiny() <= 3);
+                color.mV[3] = U8 (SHININESS_TO_ALPHA[tep->getShiny()] * 255);
+            }
+        }
+    }
+
+    // INDICES
+    if (full_rebuild)
+    {
+        LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - indices");
+        mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex, mIndicesCount);
+
+        volatile __m128i* dst = (__m128i*) indicesp.get();
+        __m128i* src = (__m128i*) vf.mIndices;
+        __m128i offset = _mm_set1_epi16(index_offset);
+
+        S32 end = num_indices/8;
+
+        for (S32 i = 0; i < end; i++)
+        {
+            __m128i res = _mm_add_epi16(src[i], offset);
+            _mm_storeu_si128((__m128i*) dst++, res);
+        }
+
+        {
+            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - indices tail");
+            U16* idx = (U16*) dst;
+
+            for (S32 i = end*8; i < num_indices; ++i)
+            {
+                *idx++ = vf.mIndices[i]+index_offset;
+            }
+        }
+    }
+
+
+    LLMaterial* mat = tep->getMaterialParams().get();
+    LLGLTFMaterial* gltf_mat = tep->getGLTFRenderMaterial();
+
+    F32 r = 0, os = 0, ot = 0, ms = 0, mt = 0, cos_ang = 0, sin_ang = 0;
+
+    constexpr S32 XFORM_NONE = 0;
+    constexpr S32 XFORM_BLINNPHONG_COLOR = 1;
+    constexpr S32 XFORM_BLINNPHONG_NORMAL = 1 << 1;
+    constexpr S32 XFORM_BLINNPHONG_SPECULAR = 1 << 2;
+
+    S32 xforms = XFORM_NONE;
+    // For GLTF, transforms will be applied later
+    if (rebuild_tcoord && tep && !gltf_mat)
+    {
+        r  = tep->getRotation();
+        os = tep->mOffsetS;
+        ot = tep->mOffsetT;
+        ms = tep->mScaleS;
+        mt = tep->mScaleT;
+        cos_ang = cos(r);
+        sin_ang = sin(r);
+
+        if (cos_ang != 1.f ||
+            sin_ang != 0.f ||
+            os != 0.f ||
+            ot != 0.f ||
+            ms != 1.f ||
+            mt != 1.f)
+        {
+            xforms |= XFORM_BLINNPHONG_COLOR;
+        }
+        if (mat)
+        {
+            F32 r_norm = 0, os_norm = 0, ot_norm = 0, ms_norm = 0, mt_norm = 0, cos_ang_norm = 0, sin_ang_norm = 0;
+            mat->getNormalOffset(os_norm, ot_norm);
+            mat->getNormalRepeat(ms_norm, mt_norm);
+            r_norm = mat->getNormalRotation();
+            cos_ang_norm = cos(r_norm);
+            sin_ang_norm = sin(r_norm);
+            if (cos_ang_norm != 1.f ||
+                sin_ang_norm != 0.f ||
+                os_norm != 0.f ||
+                ot_norm != 0.f ||
+                ms_norm != 1.f ||
+                mt_norm != 1.f)
+            {
+                xforms |= XFORM_BLINNPHONG_NORMAL;
+            }
+        }
+        if (mat)
+        {
+            F32 r_spec = 0, os_spec = 0, ot_spec = 0, ms_spec = 0, mt_spec = 0, cos_ang_spec = 0, sin_ang_spec = 0;
+            mat->getSpecularOffset(os_spec, ot_spec);
+            mat->getSpecularRepeat(ms_spec, mt_spec);
+            r_spec = mat->getSpecularRotation();
+            cos_ang_spec = cos(r_spec);
+            sin_ang_spec = sin(r_spec);
+            if (cos_ang_spec != 1.f ||
+                sin_ang_spec != 0.f ||
+                os_spec != 0.f ||
+                ot_spec != 0.f ||
+                ms_spec != 1.f ||
+                mt_spec != 1.f)
+            {
+                xforms |= XFORM_BLINNPHONG_SPECULAR;
+            }
+        }
+    }
+
+    const LLMeshSkinInfo* skin = nullptr;
+    LLMatrix4a mat_vert;
+    LLMatrix4a mat_normal;
+
+    // prepare mat_vert
+    if (rebuild_pos)
+    {
+        if (rigged)
+        { //override with bind shape matrix if rigged
+            skin = mSkinInfo;
+            mat_vert = skin->mBindShapeMatrix;
+        }
+        else
+        {
+            mat_vert.loadu(mat_vert_in);
+        }
+    }
+
+    if (rebuild_normal || rebuild_tangent)
+    { //override mat_normal with inverse of skin->mBindShapeMatrix
+        LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - norm mat override");
+        if (rigged)
+        {
+            if (skin == nullptr)
+            {
+                skin = mSkinInfo;
+            }
+
+            //TODO -- cache this (check profile marker above)?
+            glh::matrix4f m((F32*) skin->mBindShapeMatrix.getF32ptr());
+            m = m.inverse().transpose();
+            mat_normal.loadu(m.m);
+        }
+        else
+        {
+            mat_normal.loadu(mat_norm_in);
+        }
+    }
+
+    {
+        //if it's not fullbright and has no normals, bake sunlight based on face normal
+        //bool bake_sunlight = !getTextureEntry()->getFullbright() &&
+        //  !mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_NORMAL);
+
+        if (rebuild_tcoord)
+        {
+            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - tcoord");
+
+            //bump setup
+            LLVector4a binormal_dir( -sin_ang, cos_ang, 0.f );
+            LLVector4a bump_s_primary_light_ray(0.f, 0.f, 0.f);
+            LLVector4a bump_t_primary_light_ray(0.f, 0.f, 0.f);
+
+            LLQuaternion bump_quat;
+            if (mDrawablep->isActive())
+            {
+                bump_quat = LLQuaternion(mDrawablep->getRenderMatrix());
+            }
+
+            if (bump_code)
+            {
+                mVObjp->getVolume()->genTangents(face_index);
+                F32 offset_multiple;
+                switch( bump_code )
+                {
+                    case BE_NO_BUMP:
+                    offset_multiple = 0.f;
+                    break;
+                    case BE_BRIGHTNESS:
+                    case BE_DARKNESS:
+                    if( mTexture[LLRender::DIFFUSE_MAP].notNull() && mTexture[LLRender::DIFFUSE_MAP]->hasGLTexture())
+                    {
+                        // Offset by approximately one texel
+                        S32 cur_discard = mTexture[LLRender::DIFFUSE_MAP]->getDiscardLevel();
+                        S32 max_size = llmax( mTexture[LLRender::DIFFUSE_MAP]->getWidth(), mTexture[LLRender::DIFFUSE_MAP]->getHeight() );
+                        max_size <<= cur_discard;
+                        const F32 ARTIFICIAL_OFFSET = 2.f;
+                        offset_multiple = ARTIFICIAL_OFFSET / (F32)max_size;
+                    }
+                    else
+                    {
+                        offset_multiple = 1.f/256;
+                    }
+                    break;
+
+                    default:  // Standard bumpmap textures.  Assumed to be 256x256
+                    offset_multiple = 1.f / 256;
+                    break;
+                }
+
+                F32 s_scale = 1.f;
+                F32 t_scale = 1.f;
+                if( tep )
+                {
+                    tep->getScale( &s_scale, &t_scale );
+                }
+                // Use the nudged south when coming from above sun angle, such
+                // that emboss mapping always shows up on the upward faces of cubes when
+                // it's noon (since a lot of builders build with the sun forced to noon).
+                LLVector3   sun_ray  = gSky.mVOSkyp->mBumpSunDir;
+                LLVector3   moon_ray = gSky.mVOSkyp->getMoon().getDirection();
+                LLVector3& primary_light_ray = (sun_ray.mV[VZ] > 0) ? sun_ray : moon_ray;
+
+                bump_s_primary_light_ray.load3((offset_multiple * s_scale * primary_light_ray).mV);
+                bump_t_primary_light_ray.load3((offset_multiple * t_scale * primary_light_ray).mV);
+            }
+
+            U8 texgen = getTextureEntry()->getTexGen();
+            if (rebuild_tcoord && texgen != LLTextureEntry::TEX_GEN_DEFAULT)
+            { //planar texgen needs binormals
+                mVObjp->getVolume()->genTangents(face_index);
+            }
+
+            U8 tex_mode = 0;
+
+            bool tex_anim = false;
+
+                LLVOVolume* vobj = (LLVOVolume*) (LLViewerObject*) mVObjp;
+                tex_mode = vobj->mTexAnimMode;
+
+            if (vobj->mTextureAnimp)
+            { //texture animation is in play, override specular and normal map tex coords with diffuse texcoords
+                tex_anim = true;
+            }
+
+            if (isState(TEXTURE_ANIM))
+            {
+                if (!tex_mode)
+                {
+                    clearState(TEXTURE_ANIM);
+                }
+                else
+                {
+                    os = ot = 0.f;
+                    r = 0.f;
+                    cos_ang = 1.f;
+                    sin_ang = 0.f;
+                    ms = mt = 1.f;
+
+                    xforms = XFORM_NONE;
+                }
+
+                if (getVirtualSize() >= MIN_TEX_ANIM_SIZE) // || isState(LLFace::RIGGED))
+                { //don't override texture transform during tc bake
+                    tex_mode = 0;
+                }
+            }
+
+            LLVector4a scalea;
+            scalea.load3(scale.mV);
+
+            bool do_bump = bump_code && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD1);
+
+            if ((mat || gltf_mat) && !do_bump)
+            {
+                do_bump  = mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD1)
+                         || mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD2);
+            }
+
+            // For GLTF materials: Transforms will be applied later
+            bool do_tex_mat = tex_mode && mTextureMatrix && !gltf_mat;
+
+            if (!do_bump)
+            { //not bump mapped, might be able to do a cheap update
+                mVertexBuffer->getTexCoord0Strider(tex_coords0, mGeomIndex, mGeomCount);
+
+                if (texgen != LLTextureEntry::TEX_GEN_PLANAR)
+                {
+                    LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - texgen");
+                    if (!do_tex_mat)
+                    {
+                        if (xforms == XFORM_NONE)
+                        {
+                            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("ggv - texgen 1");
+                            S32 tc_size = (num_vertices*2*sizeof(F32)+0xF) & ~0xF;
+                            LLVector4a::memcpyNonAliased16((F32*) tex_coords0.get(), (F32*) vf.mTexCoords, tc_size);
+                        }
+                        else
+                        {
+                            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("ggv - texgen 2");
+                            F32* dst = (F32*) tex_coords0.get();
+                            LLVector4a* src = (LLVector4a*) vf.mTexCoords;
+
+                            LLVector4a trans;
+                            trans.splat(-0.5f);
+
+                            LLVector4a rot0;
+                            rot0.set(cos_ang, -sin_ang, cos_ang, -sin_ang);
+
+                            LLVector4a rot1;
+                            rot1.set(sin_ang, cos_ang, sin_ang, cos_ang);
+
+                            LLVector4a scale;
+                            scale.set(ms, mt, ms, mt);
+
+                            LLVector4a offset;
+                            offset.set(os+0.5f, ot+0.5f, os+0.5f, ot+0.5f);
+
+                            LLVector4Logical mask;
+                            mask.clear();
+                            mask.setElement<2>();
+                            mask.setElement<3>();
+
+                            U32 count = num_vertices/2 + num_vertices%2;
+
+                            for (S32 i = 0; i < count; i++)
+                            {
+                                LLVector4a res = *src++;
+                                xform4a(res, trans, mask, rot0, rot1, offset, scale);
+                                res.store4a(dst);
+                                dst += 4;
+                            }
+                        }
+                    }
+                    else
+                    { //do tex mat, no texgen, no bump
+                        for (S32 i = 0; i < num_vertices; i++)
+                        {
+                            LLVector2 tc(vf.mTexCoords[i]);
+
+                            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];
+                            *tex_coords0++ = tc;
+                        }
+                    }
+                }
+                else
+                { //no bump, tex gen planar
+                    LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - texgen planar");
+                    if (do_tex_mat)
+                    {
+                        for (S32 i = 0; i < num_vertices; i++)
+                        {
+                            LLVector2 tc(vf.mTexCoords[i]);
+                            LLVector4a& norm = vf.mNormals[i];
+                            LLVector4a& center = *(vf.mCenter);
+                            LLVector4a vec = vf.mPositions[i];
+                            vec.mul(scalea);
+                            planarProjection(tc, norm, center, vec);
+
+                            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];
+
+                            *tex_coords0++ = tc;
+                        }
+                    }
+                    else if (xforms != XFORM_NONE)
+                    {
+                        for (S32 i = 0; i < num_vertices; i++)
+                        {
+                            LLVector2 tc(vf.mTexCoords[i]);
+                            LLVector4a& norm = vf.mNormals[i];
+                            LLVector4a& center = *(vf.mCenter);
+                            LLVector4a vec = vf.mPositions[i];
+                            vec.mul(scalea);
+                            planarProjection(tc, norm, center, vec);
+
+                            xform(tc, cos_ang, sin_ang, os, ot, ms, mt);
+
+                            *tex_coords0++ = tc;
+                        }
+                    }
+                    else
+                    {
+                        for (S32 i = 0; i < num_vertices; i++)
+                        {
+                            LLVector2 tc(vf.mTexCoords[i]);
+                            LLVector4a& norm = vf.mNormals[i];
+                            LLVector4a& center = *(vf.mCenter);
+                            LLVector4a vec = vf.mPositions[i];
+                            vec.mul(scalea);
+                            planarProjection(tc, norm, center, vec);
+
+                            *tex_coords0++ = tc;
+                        }
+                    }
+                }
+            }
+            else
+            { //bump mapped or has material, just do the whole expensive loop
+                LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - texgen default");
+
+                std::vector<LLVector2> bump_tc;
+
+                if (mat && !mat->getNormalID().isNull())
+                { //writing out normal and specular texture coordinates, not bump offsets
+                    do_bump = false;
+                }
+
+                LLStrider<LLVector2> dst;
+
+                for (U32 ch = 0; ch < 3; ++ch)
+                {
+                    S32 xform_channel = XFORM_NONE;
+                    switch (ch)
+                    {
+                        case 0:
+                            xform_channel = XFORM_BLINNPHONG_COLOR;
+                            mVertexBuffer->getTexCoord0Strider(dst, mGeomIndex, mGeomCount);
+                            break;
+                        case 1:
+                            xform_channel = XFORM_BLINNPHONG_NORMAL;
+                            if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD1))
+                            {
+                                mVertexBuffer->getTexCoord1Strider(dst, mGeomIndex, mGeomCount);
+                                if (mat && !tex_anim)
+                                {
+                                    r  = mat->getNormalRotation();
+                                    mat->getNormalOffset(os, ot);
+                                    mat->getNormalRepeat(ms, mt);
+
+                                    cos_ang = cos(r);
+                                    sin_ang = sin(r);
+
+                                }
+                            }
+                            else
+                            {
+                                continue;
+                            }
+                            break;
+                        case 2:
+                            xform_channel = XFORM_BLINNPHONG_SPECULAR;
+                            if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD2))
+                            {
+                                mVertexBuffer->getTexCoord2Strider(dst, mGeomIndex, mGeomCount);
+                                if (mat && !tex_anim)
+                                {
+                                    r  = mat->getSpecularRotation();
+                                    mat->getSpecularOffset(os, ot);
+                                    mat->getSpecularRepeat(ms, mt);
+
+                                    cos_ang = cos(r);
+                                    sin_ang = sin(r);
+                                }
+                            }
+                            else
+                            {
+                                continue;
+                            }
+                            break;
+                    }
+                    const bool do_xform = (xforms & xform_channel) != XFORM_NONE;
+
+
+                    for (S32 i = 0; i < num_vertices; i++)
+                    {
+                        LLVector2 tc(vf.mTexCoords[i]);
+
+                        LLVector4a& norm = vf.mNormals[i];
+
+                        LLVector4a& center = *(vf.mCenter);
+
+                        if (texgen != LLTextureEntry::TEX_GEN_DEFAULT)
+                        {
+                            LLVector4a vec = vf.mPositions[i];
+
+                            vec.mul(scalea);
+
+                            if (texgen == LLTextureEntry::TEX_GEN_PLANAR)
+                            {
+                                planarProjection(tc, norm, center, vec);
+                            }
+                        }
+
+                        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 if (do_xform)
+                        {
+                            xform(tc, cos_ang, sin_ang, os, ot, ms, mt);
+                        }
+
+                        *dst++ = tc;
+                        if (do_bump)
+                        {
+                            bump_tc.push_back(tc);
+                        }
+                    }
+                }
+
+                if ((!mat && !gltf_mat) && do_bump)
+                {
+                    mVertexBuffer->getTexCoord1Strider(tex_coords1, mGeomIndex, mGeomCount);
+
+                    mVObjp->getVolume()->genTangents(face_index);
+
+                    for (S32 i = 0; i < num_vertices; i++)
+                    {
+                        LLVector4a tangent = vf.mTangents[i];
+
+                        LLVector4a binorm;
+                        binorm.setCross3(vf.mNormals[i], tangent);
+                        binorm.mul(tangent.getF32ptr()[3]);
+
+                        LLMatrix4a tangent_to_object;
+                        tangent_to_object.setRows(tangent, binorm, 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_coords1++ = tc;
+                    }
+                }
+            }
+        }
+
+        if (rebuild_pos)
+        {
+            LLVector4a* src = vf.mPositions;
+
+            //_mm_prefetch((char*)src, _MM_HINT_T0);
+
+            LLVector4a* end = src+num_vertices;
+            //LLVector4a* end_64 = end-4;
+
+            llassert(num_vertices > 0);
+
+            mVertexBuffer->getVertexStrider(vert, mGeomIndex, mGeomCount);
+
+
+            F32* dst = (F32*) vert.get();
+            F32* end_f32 = dst+mGeomCount*4;
+
+            //_mm_prefetch((char*)dst, _MM_HINT_NTA);
+            //_mm_prefetch((char*)src, _MM_HINT_NTA);
+
+            //_mm_prefetch((char*)dst, _MM_HINT_NTA);
+
+
+            LLVector4a res0; //,res1,res2,res3;
+
+            LLVector4a texIdx;
+
+            S32 index = mTextureIndex < FACE_DO_NOT_BATCH_TEXTURES ? mTextureIndex : 0;
+
+            F32 val = 0.f;
+            S32* vp = (S32*) &val;
+            *vp = index;
+
+            llassert(index <= LLGLSLShader::sIndexedTextureChannels-1);
+
+            LLVector4Logical mask;
+            mask.clear();
+            mask.setElement<3>();
+
+            texIdx.set(0,0,0,val);
+
+            LLVector4a tmp;
+
+
+            while (src < end)
+            {
+                mat_vert.affineTransform(*src++, res0);
+                tmp.setSelectWithMask(mask, texIdx, res0);
+                tmp.store4a((F32*) dst);
+                dst += 4;
+            }
+
+            while (dst < end_f32)
+            {
+                res0.store4a((F32*) dst);
+                dst += 4;
+            }
+        }
+
+        if (rebuild_normal)
+        {
+            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - normal");
+
+            mVertexBuffer->getNormalStrider(norm, mGeomIndex, mGeomCount);
+            F32* normals = (F32*) norm.get();
+            LLVector4a* src = vf.mNormals;
+            LLVector4a* end = src+num_vertices;
+
+            while (src < end)
+            {
+                LLVector4a normal;
+                mat_normal.rotate(*src++, normal);
+                normal.store4a(normals);
+                normals += 4;
+            }
+        }
+
+        if (rebuild_tangent)
+        {
+            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - tangent");
+            mVertexBuffer->getTangentStrider(tangent, mGeomIndex, mGeomCount);
+            F32* tangents = (F32*) tangent.get();
+
+            mVObjp->getVolume()->genTangents(face_index);
+
+            LLVector4Logical mask;
+            mask.clear();
+            mask.setElement<3>();
+
+            LLVector4a* src = vf.mTangents;
+            LLVector4a* end = vf.mTangents +num_vertices;
+
+            while (src < end)
+            {
+                LLVector4a tangent_out;
+                mat_normal.rotate(*src, tangent_out);
+                tangent_out.setSelectWithMask(mask, *src, tangent_out);
+                tangent_out.store4a(tangents);
+
+                src++;
+                tangents += 4;
+            }
+        }
+
+        if (rebuild_weights && vf.mWeights)
+        {
+            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - weight");
+            mVertexBuffer->getWeight4Strider(wght, mGeomIndex, mGeomCount);
+            F32* weights = (F32*) wght.get();
+            LLVector4a::memcpyNonAliased16(weights, (F32*) vf.mWeights, num_vertices*4*sizeof(F32));
+        }
+
+        if (rebuild_color && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_COLOR) )
+        {
+            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - color");
+            mVertexBuffer->getColorStrider(colors, mGeomIndex, mGeomCount);
+
+            LLVector4a src;
+
+            U32 vec[4];
+            vec[0] = vec[1] = vec[2] = vec[3] = color.asRGBA();
+
+            src.loadua((F32*) vec);
+
+            F32* dst = (F32*) colors.get();
+            S32 num_vecs = num_vertices/4;
+            if (num_vertices%4 > 0)
+            {
+                ++num_vecs;
+            }
+
+            for (S32 i = 0; i < num_vecs; i++)
+            {
+                src.store4a(dst);
+                dst += 4;
+            }
+        }
+
+        if (rebuild_emissive)
+        {
+            LL_PROFILE_ZONE_NAMED_CATEGORY_FACE("getGeometryVolume - emissive");
+            LLStrider<LLColor4U> emissive;
+            mVertexBuffer->getEmissiveStrider(emissive, mGeomIndex, mGeomCount);
+
+            U8 glow = (U8) llclamp((S32) (getTextureEntry()->getGlow()*255), 0, 255);
+
+            LLVector4a src;
+
+
+            LLColor4U glow4u = LLColor4U(0,0,0,glow);
+
+            U32 glow32 = glow4u.asRGBA();
+
+            U32 vec[4];
+            vec[0] = vec[1] = vec[2] = vec[3] = glow32;
+
+            src.loadua((F32*) vec);
+
+            F32* dst = (F32*) emissive.get();
+            S32 num_vecs = num_vertices/4;
+            if (num_vertices%4 > 0)
+            {
+                ++num_vecs;
+            }
+
+            for (S32 i = 0; i < num_vecs; i++)
+            {
+                src.store4a(dst);
+                dst += 4;
+            }
+        }
+    }
+
+    if (rebuild_tcoord)
+    {
+        mTexExtents[0].setVec(0,0);
+        mTexExtents[1].setVec(1,1);
+        xform(mTexExtents[0], cos_ang, sin_ang, os, ot, ms, mt);
+        xform(mTexExtents[1], cos_ang, sin_ang, os, ot, ms, mt);
+
+        F32 es = vf.mTexCoordExtents[1].mV[0] - vf.mTexCoordExtents[0].mV[0] ;
+        F32 et = vf.mTexCoordExtents[1].mV[1] - vf.mTexCoordExtents[0].mV[1] ;
+        mTexExtents[0][0] *= es ;
+        mTexExtents[1][0] *= es ;
+        mTexExtents[0][1] *= et ;
+        mTexExtents[1][1] *= et ;
+    }
+
+
+    return true;
+}
+
+void LLFace::renderIndexed()
+{
+    if (mVertexBuffer.notNull())
+    {
+        mVertexBuffer->setBuffer();
+        mVertexBuffer->drawRange(LLRender::TRIANGLES, getGeomIndex(), getGeomIndex() + getGeomCount()-1, getIndicesCount(), getIndicesStart());
+    }
+}
+
+//check if the face has a media
+bool LLFace::hasMedia() const
+{
+    if(mHasMedia)
+    {
+        return true ;
+    }
+    if(mTexture[LLRender::DIFFUSE_MAP].notNull())
+    {
+        return mTexture[LLRender::DIFFUSE_MAP]->hasParcelMedia() ;  //if has a parcel media
+    }
+
+    return false ; //no media.
+}
+
+const F32 LEAST_IMPORTANCE = 0.05f ;
+const F32 LEAST_IMPORTANCE_FOR_LARGE_IMAGE = 0.3f ;
+
+void LLFace::resetVirtualSize()
+{
+    setVirtualSize(0.f);
+    mImportanceToCamera = 0.f;
+}
+
+F32 LLFace::getTextureVirtualSize()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
+    F32 radius;
+    F32 cos_angle_to_view_dir;
+    bool in_frustum = calcPixelArea(cos_angle_to_view_dir, radius);
+
+    if (mPixelArea < F_ALMOST_ZERO || !in_frustum)
+    {
+        setVirtualSize(0.f) ;
+        return 0.f;
+    }
+
+    //get area of circle in texture space
+    LLVector2 tdim = mTexExtents[1] - mTexExtents[0];
+    F32 texel_area = (tdim * 0.5f).lengthSquared()*3.14159f;
+    if (texel_area <= 0)
+    {
+        // Probably animated, use default
+        texel_area = 1.f;
+    }
+
+    F32 face_area;
+    if (mVObjp->isSculpted() && texel_area > 1.f)
+    {
+        //sculpts can break assumptions about texel area
+        face_area = mPixelArea;
+    }
+    else
+    {
+        //apply texel area to face area to get accurate ratio
+        //face_area /= llclamp(texel_area, 1.f/64.f, 16.f);
+        face_area =  mPixelArea / llclamp(texel_area, 0.015625f, 128.f);
+    }
+
+    face_area = LLFace::adjustPixelArea(mImportanceToCamera, face_area) ;
+    if(face_area > LLViewerTexture::sMinLargeImageSize) //if is large image, shrink face_area by considering the partial overlapping.
+    {
+        if(mImportanceToCamera > LEAST_IMPORTANCE_FOR_LARGE_IMAGE && mTexture[LLRender::DIFFUSE_MAP].notNull() && mTexture[LLRender::DIFFUSE_MAP]->isLargeImage())
+        {
+            face_area *= adjustPartialOverlapPixelArea(cos_angle_to_view_dir, radius );
+        }
+    }
+
+    setVirtualSize(face_area) ;
+
+    return face_area;
+}
+
+bool LLFace::calcPixelArea(F32& cos_angle_to_view_dir, F32& radius)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE;
+
+    //VECTORIZE THIS
+    //get area of circle around face
+
+    LLVector4a center;
+    LLVector4a size;
+
+
+    if (isState(LLFace::RIGGED))
+    {
+        //override with avatar bounding box
+        LLVOAvatar* avatar = mVObjp->getAvatar();
+        if (avatar && avatar->mDrawable)
+        {
+            center.load3(avatar->getPositionAgent().mV);
+            const LLVector4a* exts = avatar->mDrawable->getSpatialExtents();
+            size.setSub(exts[1], exts[0]);
+        }
+        else
+        {
+            return false;
+        }
+    }
+    else
+    {
+        center.load3(getPositionAgent().mV);
+        size.setSub(mExtents[1], mExtents[0]);
+    }
+    size.mul(0.5f);
+
+    LLViewerCamera* camera = LLViewerCamera::getInstance();
+
+    F32 size_squared = size.dot3(size).getF32();
+    LLVector4a lookAt;
+    LLVector4a t;
+    t.load3(camera->getOrigin().mV);
+    lookAt.setSub(center, t);
+
+    F32 dist = lookAt.getLength3().getF32();
+    dist = llmax(dist-size.getLength3().getF32(), 0.001f);
+    //ramp down distance for nearby objects
+    if (dist < 16.f)
+    {
+        dist /= 16.f;
+        dist *= dist;
+        dist *= 16.f;
+    }
+
+    lookAt.normalize3fast() ;
+
+    //get area of circle around node
+    F32 app_angle = atanf((F32) sqrt(size_squared) / dist);
+    radius = app_angle*LLDrawable::sCurPixelAngle;
+    mPixelArea = radius*radius * 3.14159f;
+    LLVector4a x_axis;
+    x_axis.load3(camera->getXAxis().mV);
+    cos_angle_to_view_dir = lookAt.dot3(x_axis).getF32();
+
+    //if has media, check if the face is out of the view frustum.
+    if(hasMedia())
+    {
+        if(!camera->AABBInFrustum(center, size))
+        {
+            mImportanceToCamera = 0.f ;
+            return false ;
+        }
+        if(cos_angle_to_view_dir > camera->getCosHalfFov()) //the center is within the view frustum
+        {
+            cos_angle_to_view_dir = 1.0f ;
+        }
+        else
+        {
+            LLVector4a d;
+            d.setSub(lookAt, x_axis);
+
+            if(dist * dist * d.dot3(d) < size_squared)
+            {
+                cos_angle_to_view_dir = 1.0f ;
+            }
+        }
+    }
+
+    if(dist < mBoundingSphereRadius) //camera is very close
+    {
+        cos_angle_to_view_dir = 1.0f ;
+        mImportanceToCamera = 1.0f ;
+    }
+    else
+    {
+        mImportanceToCamera = LLFace::calcImportanceToCamera(cos_angle_to_view_dir, dist) ;
+    }
+
+    return true ;
+}
+
+//the projection of the face partially overlaps with the screen
+F32 LLFace::adjustPartialOverlapPixelArea(F32 cos_angle_to_view_dir, F32 radius )
+{
+    F32 screen_radius = (F32)llmax(gViewerWindow->getWindowWidthRaw(), gViewerWindow->getWindowHeightRaw()) ;
+    F32 center_angle = acosf(cos_angle_to_view_dir) ;
+    F32 d = center_angle * LLDrawable::sCurPixelAngle ;
+
+    if(d + radius > screen_radius + 5.f)
+    {
+        //----------------------------------------------
+        //calculate the intersection area of two circles
+        //F32 radius_square = radius * radius ;
+        //F32 d_square = d * d ;
+        //F32 screen_radius_square = screen_radius * screen_radius ;
+        //face_area =
+        //  radius_square * acosf((d_square + radius_square - screen_radius_square)/(2 * d * radius)) +
+        //  screen_radius_square * acosf((d_square + screen_radius_square - radius_square)/(2 * d * screen_radius)) -
+        //  0.5f * sqrtf((-d + radius + screen_radius) * (d + radius - screen_radius) * (d - radius + screen_radius) * (d + radius + screen_radius)) ;
+        //----------------------------------------------
+
+        //the above calculation is too expensive
+        //the below is a good estimation: bounding box of the bounding sphere:
+        F32 alpha = 0.5f * (radius + screen_radius - d) / radius ;
+        alpha = llclamp(alpha, 0.f, 1.f) ;
+        return alpha * alpha ;
+    }
+    return 1.0f ;
+}
+
+const S8 FACE_IMPORTANCE_LEVEL = 4 ;
+const F32 FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[FACE_IMPORTANCE_LEVEL][2] = //{distance, importance_weight}
+    {{16.1f, 1.0f}, {32.1f, 0.5f}, {48.1f, 0.2f}, {96.1f, 0.05f} } ;
+const F32 FACE_IMPORTANCE_TO_CAMERA_OVER_ANGLE[FACE_IMPORTANCE_LEVEL][2] =    //{cos(angle), importance_weight}
+    {{0.985f /*cos(10 degrees)*/, 1.0f}, {0.94f /*cos(20 degrees)*/, 0.8f}, {0.866f /*cos(30 degrees)*/, 0.64f}, {0.0f, 0.36f}} ;
+
+//static
+F32 LLFace::calcImportanceToCamera(F32 cos_angle_to_view_dir, F32 dist)
+{
+    F32 importance = 0.f ;
+
+    if(cos_angle_to_view_dir > LLViewerCamera::getInstance()->getCosHalfFov() &&
+        dist < FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[FACE_IMPORTANCE_LEVEL - 1][0])
+    {
+        LLViewerCamera* camera = LLViewerCamera::getInstance();
+        F32 camera_moving_speed = camera->getAverageSpeed() ;
+        F32 camera_angular_speed = camera->getAverageAngularSpeed();
+
+        if(camera_moving_speed > 10.0f || camera_angular_speed > 1.0f)
+        {
+            //if camera moves or rotates too fast, ignore the importance factor
+            return 0.f ;
+        }
+
+        S32 i = 0 ;
+        for(i = 0; i < FACE_IMPORTANCE_LEVEL && dist > FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[i][0]; ++i);
+        i = llmin(i, FACE_IMPORTANCE_LEVEL - 1) ;
+        F32 dist_factor = FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[i][1] ;
+
+        for(i = 0; i < FACE_IMPORTANCE_LEVEL && cos_angle_to_view_dir < FACE_IMPORTANCE_TO_CAMERA_OVER_ANGLE[i][0] ; ++i) ;
+        i = llmin(i, FACE_IMPORTANCE_LEVEL - 1) ;
+        importance = dist_factor * FACE_IMPORTANCE_TO_CAMERA_OVER_ANGLE[i][1] ;
+    }
+
+    return importance ;
+}
+
+//static
+F32 LLFace::adjustPixelArea(F32 importance, F32 pixel_area)
+{
+    if(pixel_area > LLViewerTexture::sMaxSmallImageSize)
+    {
+        if(importance < LEAST_IMPORTANCE) //if the face is not important, do not load hi-res.
+        {
+            static const F32 MAX_LEAST_IMPORTANCE_IMAGE_SIZE = 128.0f * 128.0f ;
+            pixel_area = llmin(pixel_area * 0.5f, MAX_LEAST_IMPORTANCE_IMAGE_SIZE) ;
+        }
+        else if(pixel_area > LLViewerTexture::sMinLargeImageSize) //if is large image, shrink face_area by considering the partial overlapping.
+        {
+            if(importance < LEAST_IMPORTANCE_FOR_LARGE_IMAGE)//if the face is not important, do not load hi-res.
+            {
+                pixel_area = LLViewerTexture::sMinLargeImageSize ;
+            }
+        }
+    }
+
+    return pixel_area ;
+}
+
+bool LLFace::verify(const U32* indices_array) const
+{
+    bool ok = true;
+
+    if( mVertexBuffer.isNull() )
+    { //no vertex buffer, face is implicitly valid
+        return true;
+    }
+
+    // First, check whether the face data fits within the pool's range.
+    if ((mGeomIndex + mGeomCount) > mVertexBuffer->getNumVerts())
+    {
+        ok = false;
+        LL_INFOS() << "Face references invalid vertices!" << LL_ENDL;
+    }
+
+    S32 indices_count = (S32)getIndicesCount();
+
+    if (!indices_count)
+    {
+        return true;
+    }
+
+    if (indices_count > LL_MAX_INDICES_COUNT)
+    {
+        ok = false;
+        LL_INFOS() << "Face has bogus indices count" << LL_ENDL;
+    }
+
+    if (mIndicesIndex + mIndicesCount > mVertexBuffer->getNumIndices())
+    {
+        ok = false;
+        LL_INFOS() << "Face references invalid indices!" << LL_ENDL;
+    }
+
+#if 0
+    S32 geom_start = getGeomStart();
+    S32 geom_count = mGeomCount;
+
+    const U32 *indicesp = indices_array ? indices_array + mIndicesIndex : getRawIndices();
+
+    for (S32 i = 0; i < indices_count; i++)
+    {
+        S32 delta = indicesp[i] - geom_start;
+        if (0 > delta)
+        {
+            LL_WARNS() << "Face index too low!" << LL_ENDL;
+            LL_INFOS() << "i:" << i << " Index:" << indicesp[i] << " GStart: " << geom_start << LL_ENDL;
+            ok = false;
+        }
+        else if (delta >= geom_count)
+        {
+            LL_WARNS() << "Face index too high!" << LL_ENDL;
+            LL_INFOS() << "i:" << i << " Index:" << indicesp[i] << " GEnd: " << geom_start + geom_count << LL_ENDL;
+            ok = false;
+        }
+    }
+#endif
+
+    if (!ok)
+    {
+        printDebugInfo();
+    }
+    return ok;
+}
+
+
+void LLFace::setViewerObject(LLViewerObject* objp)
+{
+    mVObjp = objp;
+}
+
+
+const LLMatrix4& LLFace::getRenderMatrix() const
+{
+    return mDrawablep->getRenderMatrix();
+}
+
+//============================================================================
+// From llface.inl
+
+S32 LLFace::getColors(LLStrider<LLColor4U> &colors)
+{
+    if (!mGeomCount)
+    {
+        return -1;
+    }
+
+    // llassert(mGeomIndex >= 0);
+    mVertexBuffer->getColorStrider(colors, mGeomIndex, mGeomCount);
+    return mGeomIndex;
+}
+
+S32 LLFace::getIndices(LLStrider<U16> &indicesp)
+{
+    mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex, mIndicesCount);
+    llassert(indicesp[0] != indicesp[1]);
+    return mIndicesIndex;
+}
+
+LLVector3 LLFace::getPositionAgent() const
+{
+    if (mDrawablep->isStatic())
+    {
+        return mCenterAgent;
+    }
+    else
+    {
+        return mCenterLocal * getRenderMatrix();
+    }
+}
+
+LLViewerTexture* LLFace::getTexture(U32 ch) const
+{
+    llassert(ch < LLRender::NUM_TEXTURE_CHANNELS);
+
+    return mTexture[ch] ;
+}
+
+void LLFace::setVertexBuffer(LLVertexBuffer* buffer)
+{
+    if (buffer)
+    {
+        LLSculptIDSize::instance().inc(mDrawablep, buffer->getSize() + buffer->getIndicesSize());
+    }
+
+    if (mVertexBuffer)
+    {
+        LLSculptIDSize::instance().dec(mDrawablep);
+    }
+
+    mVertexBuffer = buffer;
+    llassert(verify());
+}
+
+void LLFace::clearVertexBuffer()
+{
+    if (mVertexBuffer)
+    {
+        LLSculptIDSize::instance().dec(mDrawablep);
+    }
+
+    mVertexBuffer = NULL;
+}
+
+S32 LLFace::getRiggedIndex(U32 type) const
+{
+    if (mRiggedIndex.empty())
+    {
+        return -1;
+    }
+
+    llassert(type < mRiggedIndex.size());
+
+    return mRiggedIndex[type];
+}
+
+U64 LLFace::getSkinHash()
+{
+    return mSkinInfo ? mSkinInfo->mHash : 0;
+}
+
+bool LLFace::isInAlphaPool() const
+{
+    return  getPoolType() == LLDrawPool::POOL_ALPHA ||
+        getPoolType() == LLDrawPool::POOL_ALPHA_PRE_WATER ||
+        getPoolType() == LLDrawPool::POOL_ALPHA_POST_WATER;
+}