forked from siana/SingularityViewer
/
llface.cpp
2761 lines (2285 loc) · 68.1 KB
/
llface.cpp
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/**
* @file llface.cpp
* @brief LLFace class implementation
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* Copyright (c) 2001-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#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 "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 "llvosky.h"
#include "llvovolume.h"
#include "pipeline.h"
#include "llviewerregion.h"
#include "llviewerwindow.h"
#include "llviewershadermgr.h"
#include "llviewertexture.h"
#include "llvoavatar.h"
#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 ¢er, 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)
{
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 = 255;
setDrawable(drawablep);
mVObjp = objp;
mReferenceIndex = -1;
mTextureMatrix = NULL;
mDrawInfo = NULL;
mFaceColor = LLColor4(1,0,0,1);
mImportanceToCamera = 0.f ;
mBoundingSphereRadius = 0.0f ;
mHasMedia = FALSE ;
mShinyInAlpha = false;
}
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) ;
}
}
if (isState(LLFace::PARTICLE))
{
LLVOPartGroup::freeVBSlot(getGeomIndex()/4);
clearState(LLFace::PARTICLE);
}
if (mDrawPoolp)
{
if (this->isState(LLFace::RIGGED) && mDrawPoolp->getType() == LLDrawPool::POOL_AVATAR)
{
((LLDrawPoolAvatar*) mDrawPoolp)->removeRiggedFace(this);
}
else
{
mDrawPoolp->removeFace(this);
}
mDrawPoolp = NULL;
}
if (mTextureMatrix)
{
ll_aligned_free_16(mTextureMatrix);
mTextureMatrix = NULL;
if (mDrawablep.notNull())
{
LLSpatialGroup* group = mDrawablep->getSpatialGroup();
if (group)
{
group->dirtyGeom();
gPipeline.markRebuild(group, TRUE);
}
}
}
setDrawInfo(NULL);
mDrawablep = NULL;
mVObjp = NULL;
}
// static
void LLFace::initClass()
{
}
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)
{
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, TRUE);
}
}
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::setNormalMap(LLViewerTexture* tex)
{
setTexture(LLRender::NORMAL_MAP, tex);
}
void LLFace::setSpecularMap(LLViewerTexture* tex)
{
setTexture(LLRender::SPECULAR_MAP, tex);
}
void LLFace::dirtyTexture()
{
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;
}
gPipeline.markRebuild(drawablep, LLDrawable::REBUILD_VOLUME, FALSE);
}
}
}
gPipeline.markTextured(drawablep);
}
void LLFace::notifyAboutCreatingTexture(LLViewerTexture *texture)
{
LLDrawable* drawablep = getDrawable();
if(mVObjp.notNull() && mVObjp->getVolume())
{
LLVOVolume *vobj = drawablep->getVOVolume();
if(vobj && vobj->notifyAboutCreatingTexture(texture))
{
gPipeline.markTextured(drawablep);
gPipeline.markRebuild(drawablep, LLDrawable::REBUILD_VOLUME);
}
}
}
void LLFace::notifyAboutMissingAsset(LLViewerTexture *texture)
{
LLDrawable* drawablep = getDrawable();
if(mVObjp.notNull() && mVObjp->getVolume())
{
LLVOVolume *vobj = drawablep->getVOVolume();
if(vobj && vobj->notifyAboutMissingAsset(texture))
{
gPipeline.markTextured(drawablep);
gPipeline.markRebuild(drawablep, LLDrawable::REBUILD_VOLUME);
}
}
}
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());
new_texture->addTextureStats(mTexture[ch]->getMaxVirtualSize()) ;
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, const 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 != 255)
{
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<LLVector4a> &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())
{
LLVector4a local_pos;
local_pos.load3(mCenterLocal.mV);
getRenderMatrix().affineTransform(local_pos,local_pos);
mCenterAgent.set(local_pos.getF32ptr());
}
else
{
mCenterAgent = mCenterLocal;
}
}
void LLFace::renderSelected(LLViewerTexture *imagep, const LLColor4& color)
{
if (mDrawablep->getSpatialGroup() == NULL)
{
return;
}
mDrawablep->getSpatialGroup()->rebuildGeom();
mDrawablep->getSpatialGroup()->rebuildMesh();
if(mDrawablep.isNull() || mVertexBuffer.isNull())
{
return;
}
if (mGeomCount > 0 && mIndicesCount > 0)
{
gGL.getTexUnit(0)->bind(imagep);
gGL.pushMatrix();
const LLMatrix4a* model_matrix = NULL;
if (mDrawablep->isActive())
{
model_matrix = &(mDrawablep->getRenderMatrix());
}
else
{
model_matrix = &mDrawablep->getRegion()->mRenderMatrix;
}
if(model_matrix && !model_matrix->isIdentity())
{
gGL.multMatrix(*model_matrix);
}
if (mDrawablep->isState(LLDrawable::RIGGED))
{
LLVOVolume* volume = mDrawablep->getVOVolume();
if (volume)
{
LLRiggedVolume* rigged = volume->getRiggedVolume();
if (rigged)
{
LLGLEnable offset(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(-1.f, -1.f);
gGL.multMatrix(volume->getRelativeXform());
const LLVolumeFace& vol_face = rigged->getVolumeFace(getTEOffset());
// Singu Note: Implementation changed to utilize a VBO, avoiding fixed functions unless required
#if 0
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);
#else
LLGLSLShader* prev_shader = NULL;
if(LLViewerShaderMgr::instance()->getVertexShaderLevel(LLViewerShaderMgr::SHADER_INTERFACE))
{
if(LLGLSLShader::sCurBoundShaderPtr != &gHighlightProgram)
{
prev_shader = LLGLSLShader::sCurBoundShaderPtr;
gHighlightProgram.bind();
}
}
gGL.diffuseColor4fv(color.mV);
LLVertexBuffer::drawElements(LLRender::TRIANGLES, vol_face.mPositions, vol_face.mTexCoords, vol_face.mNumIndices, vol_face.mIndices);
if(prev_shader)
{
prev_shader->bind();
}
#endif
}
}
}
else
{
gGL.diffuseColor4fv(color.mV);
LLGLEnable poly_offset(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(-1.f,-1.f);
// Singu Note: Disable per-vertex color to prevent fixed-function pipeline from using it. We want glColor color, not vertex color!
mVertexBuffer->setBuffer(mVertexBuffer->getTypeMask() & ~(LLVertexBuffer::MAP_COLOR));
mVertexBuffer->draw(LLRender::TRIANGLES, mIndicesCount, mIndicesIndex);
}
gGL.popMatrix();
}
}
/* removed in lieu of raycast uv detection
void LLFace::renderSelectedUV()
{
LLViewerTexture* red_blue_imagep = LLViewerTextureManager::getFetchedTextureFromFile("uv_test1.j2c", TRUE, LLGLTexture::BOOST_UI);
LLViewerTexture* green_imagep = LLViewerTextureManager::getFetchedTextureFromFile("uv_test2.tga", TRUE, LLGLTexture::BOOST_UI);
LLGLSUVSelect object_select;
// use red/blue gradient to get coarse UV coordinates
renderSelected(red_blue_imagep, LLColor4::white);
static F32 bias = 0.f;
static F32 factor = -10.f;
glPolygonOffset(factor, bias);
// add green dither pattern on top of red/blue gradient
gGL.blendFunc(LLRender::BF_ONE, LLRender::BF_ONE);
gGL.matrixMode(LLRender::MM_TEXTURE);
gGL.pushMatrix();
// make green pattern repeat once per texel in red/blue texture
gGL.scalef(256.f, 256.f, 1.f);
gGL.matrixMode(LLRender::MM_MODELVIEW);
renderSelected(green_imagep, LLColor4::white);
gGL.matrixMode(LLRender::MM_TEXTURE);
gGL.popMatrix();
gGL.matrixMode(LLRender::MM_MODELVIEW);
gGL.blendFunc(LLRender::BF_SOURCE_ALPHA, LLRender::BF_ONE_MINUS_SOURCE_ALPHA);
}
*/
void LLFace::setDrawInfo(LLDrawInfo* draw_info)
{
if (draw_info)
{
if (draw_info->mFace)
{
draw_info->mFace->setDrawInfo(NULL);
}
draw_info->mFace = this;
}
if (mDrawInfo)
{
mDrawInfo->mFace = NULL;
}
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)
{
#if 1
return true;
#else
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;
#endif
}
BOOL LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f,
const LLMatrix4a& mat_vert_in, BOOL global_volume)
{
//get bounding box
if (mDrawablep->isState(LLDrawable::REBUILD_VOLUME | LLDrawable::REBUILD_POSITION | LLDrawable::REBUILD_RIGGED))
{
//VECTORIZE THIS
const LLMatrix4a& mat_vert = mat_vert_in;
//mat_vert.loadu(mat_vert_in);
LLVector4a min,max;
if (f >= volume.getNumVolumeFaces())
{
LL_WARNS() << "Generating bounding box for invalid face index!" << LL_ENDL;
f = 0;
}
const LLVolumeFace &face = volume.getVolumeFace(f);
min = face.mExtents[0];
max = face.mExtents[1];
llassert(less_than_max_mag(min));
llassert(less_than_max_mag(max));
//min, max are in volume space, convert to drawable render space
//get 8 corners of bounding box
LLVector4Logical mask[6];
for (U32 i = 0; i < 6; ++i)
{
mask[i].clear();
}
mask[0].setElement<2>(); //001
mask[1].setElement<1>(); //010
mask[2].setElement<1>(); //011
mask[2].setElement<2>();
mask[3].setElement<0>(); //100
mask[4].setElement<0>(); //101
mask[4].setElement<2>();
mask[5].setElement<0>(); //110
mask[5].setElement<1>();
LLVector4a v[8];
v[6] = min;
v[7] = max;
for (U32 i = 0; i < 6; ++i)
{
v[i].setSelectWithMask(mask[i], min, max);
}
LLVector4a tv[8];
//transform bounding box into drawable space
for (U32 i = 0; i < 8; ++i)
{
mat_vert.affineTransform(v[i], tv[i]);
}
//find bounding box
LLVector4a& newMin = mExtents[0];
LLVector4a& newMax = mExtents[1];
newMin = newMax = tv[0];
for (U32 i = 1; i < 8; ++i)
{
newMin.setMin(newMin, tv[i]);
newMax.setMax(newMax, tv[i]);
}
if (!mDrawablep->isActive())
{ // Shift position for region
LLVector4a offset;
offset.load3(mDrawablep->getRegion()->getOriginAgent().mV);
newMin.add(offset);
newMax.add(offset);
}
LLVector4a t;
t.setAdd(newMin,newMax);
t.mul(0.5f);
mCenterLocal.set(t.getF32ptr());
t.setSub(newMax,newMin);
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
{
LLVector4a tc4(tc.mV[VX],tc.mV[VY],0.f);
mTextureMatrix->affineTransform(tc4,tc4);
tc.set(tc4.getF32ptr());
}