//---------------------------------------------------------------------
void TerrainQuadTreeNode::updateVertexData(bool positions, bool deltas,
const Rect& rect, bool cpuData)
{
if (rect.left <= mBoundaryX || rect.right > mOffsetX
|| rect.top <= mBoundaryY || rect.bottom > mOffsetY)
{
// Do we have vertex data?
if (mVertexDataRecord)
{
// Trim to our bounds
Rect updateRect(mOffsetX, mOffsetY, mBoundaryX, mBoundaryY);
updateRect.left = std::max(updateRect.left, rect.left);
updateRect.right = std::min(updateRect.right, rect.right);
updateRect.top = std::max(updateRect.top, rect.top);
updateRect.bottom = std::min(updateRect.bottom, rect.bottom);
// update the GPU buffer directly
// TODO: do we have no use for CPU vertex data after initial load?
// if so, destroy it to free RAM, this should be fast enough to
// to direct
if(!cpuData)
{
if(mVertexDataRecord->gpuPosVertexBuf == NULL)
createGpuVertexData();
}
updateVertexBuffer(updateRect);
}
// pass on to children
if (!isLeaf())
{
for (int i = 0; i < 4; ++i)
{
mChildren[i]->updateVertexData(positions, deltas, rect, cpuData);
// merge bounds from children
AABB childBox = mChildren[i]->getAABB();
// this box is relative to child centre
VEC3 boxoffset = mChildren[i]->getLocalCentre() - getLocalCentre();
childBox.m_minCorner = childBox.m_minCorner + boxoffset;
childBox.m_maxCorner = childBox.m_maxCorner + boxoffset;
mAABB.Merge(childBox);
}
}
}
}
//------------------------------------------------------------------------
void TerrainBatch::load()
{
if ( mRenderEnable && !mIsLoaded )
{
//////////////////////////////////
createGpuVertexData();
createGpuIndexData();
loadChilds();
loadRenderableObject();
updateVertexData( mVertexRectInTile );
if ( EngineMain::getInstance().getMode() != EM_EDITOR )
{
destroyGpuVertexBackupData();
destroyGpuIndexBackupData();
}
mIsLoaded = true;
}
}
void TerrainQuadTreeNode::loadSelf()
{
createGpuVertexData();
createGpuIndexData();
}
