uint DynamicGeometryBatch::build(){
if(!m_vCnt || !m_iCnt)
return 0;
video::IHardwareIndexBuffer::EIndexType iType;
//check for 16/32 bit index buffer
bool b16=0;
if(m_iCnt>=g_max16bit)
iType=video::IHardwareIndexBuffer::EIT_32Bit;
else {
iType=video::IHardwareIndexBuffer::EIT_16Bit;
b16=true;
}
m_lastTrans.clear();
m_mesh->clear();
MeshBufferData*bdata= m_mesh->addNewBuffer();
IMeshBuffer* buffer=bdata->getMeshBuffer();
buffer->createStream(0,video::EMST_Position,video::ESDT_Point3f,m_vCnt,video::IHardwareBuffer::EUT_DynamicWriteOnly,0,0);
buffer->createStream(0,video::EMST_Normal,video::ESDT_Point3f,m_vCnt,video::IHardwareBuffer::EUT_DynamicWriteOnly,0,0);
buffer->createStream(0,video::EMST_Texcoord,video::ESDT_Point2f,m_vCnt,video::IHardwareBuffer::EUT_DynamicWriteOnly,0,0);
buffer->createIndexBuffer(iType,m_iCnt,video::IHardwareIndexBuffer::EUT_DynamicWriteOnly,0);
union{
ushort*i16;
uint*i32;
}index,sindex;
video::IHardwareIndexBuffer* idxBuff=buffer->getIndexData()->indexBuffer;
void*idx=idxBuff->lock(0,0,video::IHardwareBuffer::ELO_Discard);
if(b16)index.i16=(ushort*)idx;
else index.i32=(uint*)idx;
int offset=0;
int m=0;
std::list<InstanceData>::iterator it=m_instances.begin();
for (;it!=m_instances.end();++it)
{
m_lastTrans.push_back(math::matrix4x4::Identity);
SMesh* mesh=it->meshBuffer;
for(int i=0;i<mesh->getBuffersCount();i++){
MeshBufferData* bd= mesh->getBufferData(i);
IMeshAnimator* anim=bd->getAnimator();
IMeshBuffer* buffer;
if(anim){
buffer=anim->getMeshBuffer();
}else{
buffer=bd->getMeshBuffer();
}
video::IHardwareIndexBuffer* sidxBuff=buffer->getIndexData()->indexBuffer;
void*sidx=sidxBuff->lock(0,0,video::IHardwareBuffer::ELO_Discard);
uint svCnt=buffer->getStreamsData()->count;
bool sb16=0;
if(sidxBuff->getIndexType()== video::IHardwareIndexBuffer::EIT_16Bit)
{
sb16=true;
sindex.i16=(ushort*)sidx;
}else sindex.i32=(uint*)sidx;
uint sIStart=buffer->getIndexData()->firstIndex;
uint sICnt=buffer->getIndexData()->indexCount;
for(int k=sIStart;k<sICnt;k++){
if(b16){
if(sb16)
index.i16[m]=sindex.i16[k]+offset;
else
index.i16[m]=sindex.i32[k]+offset;
}else{
if(sb16)
index.i32[m]=sindex.i16[k]+offset;
else
index.i32[m]=sindex.i32[k]+offset;
}
m++;
}
offset+=svCnt;
sidxBuff->unlock();
}
}
idxBuff->unlock();
return 1;
}
void DynamicGeometryBatch::update(){
IMeshBuffer* buffer=m_mesh->getBuffer(0);
if(!buffer)
return;
video::IHardwareStreamBuffer* vstream=buffer->getStream(0,video::EMST_Position);
video::IHardwareStreamBuffer* nstream=buffer->getStream(0,video::EMST_Normal);
math::vector3d*vtx=(math::vector3d*)vstream->lock(0,0,video::IHardwareBuffer::ELO_Normal);
math::vector3d*norm=(math::vector3d*)nstream->lock(0,0,video::IHardwareBuffer::ELO_Normal);
int n=0;
math::box3d bbox;
bool first=true;
std::list<math::matrix4x4>::iterator tIt=m_lastTrans.begin();
std::list<InstanceData>::iterator it=m_instances.begin();
for (;it!=m_instances.end();++it,++tIt)
{
SMesh* mesh=it->meshBuffer;
const math::matrix4x4&worldMat=it->node->getAbsoluteTransformation();
bool changed=false;
const float*m1=worldMat.getMatPointer();
const float*m2=(*tIt).getMatPointer();
for(int i=0;i<16;++i){
if(m1[i]!=m2[i])
{
changed=true;
break;
}
}
if(!changed)
continue;
*tIt=worldMat;
for(int i=0;i<mesh->getBuffersCount();i++){
MeshBufferData* bd= mesh->getBufferData(i);
IMeshAnimator* anim=bd->getAnimator();
IMeshBuffer* buffer;
if(anim){
buffer=anim->getMeshBuffer();
}else{
buffer=bd->getMeshBuffer();
}
video::IHardwareStreamBuffer* svstream=buffer->getStream(0,video::EMST_Position);
math::vector3d*svtx=(math::vector3d*)svstream->lock(0,0,video::IHardwareBuffer::ELO_ReadOnly);
video::IHardwareStreamBuffer* snstream=buffer->getStream(0,video::EMST_Normal);
math::vector3d*snorm=(math::vector3d*)snstream->lock(0,0,video::IHardwareBuffer::ELO_ReadOnly);
uint svStart=buffer->getStreamsData()->start;
uint svCnt=buffer->getStreamsData()->count;
for(int k=svStart;k<svCnt;k++){
vtx[n]=worldMat*(svtx[k]);
norm[n]=worldMat.transformNormal(snorm[k]);
if(first){
first=false;
bbox.reset(vtx[n]);
}else
bbox.AddPoint(vtx[n]);
n++;
}
svstream->unlock();
snstream->unlock();
}
}
vstream->unlock();
nstream->unlock();
buffer->setBoundingBox(bbox);
m_mesh->calcCurrBoundingBox();
}