void
TileNode::merge(const TerrainTileModel* model, const RenderBindings& bindings)
{
bool newElevationData = false;
const SamplerBinding& color = bindings[SamplerBinding::COLOR];
if (color.isActive())
{
for(TerrainTileColorLayerModelVector::const_iterator i = model->colorLayers().begin();
i != model->colorLayers().end();
++i)
{
TerrainTileImageLayerModel* model = dynamic_cast<TerrainTileImageLayerModel*>(i->get());
if (model)
{
if (model->getTexture())
{
RenderingPass* pass = _renderModel.getPass(model->getImageLayer()->getUID());
if (!pass)
{
pass = &_renderModel.addPass();
pass->setLayer(model->getLayer());
// This is a new pass that just showed up at this LOD
// Since it just arrived at this LOD, make the parent the same as the color.
if (bindings[SamplerBinding::COLOR_PARENT].isActive())
{
pass->samplers()[SamplerBinding::COLOR_PARENT]._texture = model->getTexture();
pass->samplers()[SamplerBinding::COLOR_PARENT]._matrix.makeIdentity();
}
}
pass->samplers()[SamplerBinding::COLOR]._texture = model->getTexture();
pass->samplers()[SamplerBinding::COLOR]._matrix = *model->getMatrix();
// Handle an RTT image layer:
if (model->getImageLayer() && model->getImageLayer()->createTextureSupported())
{
// Check the texture's userdata for a Node. If there is one there,
// render it to the texture using the Tile Rasterizer service.
// TODO: consider hanging on to this texture and not applying it to
// the live tile until the RTT is complete. (Prevents unsightly flashing)
GeoNode* rttNode = dynamic_cast<GeoNode*>(model->getTexture()->getUserData());
if (rttNode)
{
_context->getTileRasterizer()->push(rttNode->_node.get(), model->getTexture(), rttNode->_extent);
}
}
}
}
else // non-image color layer (like splatting, e.g.)
{
TerrainTileColorLayerModel* model = i->get();
if (model && model->getLayer())
{
RenderingPass* pass = _renderModel.getPass(model->getLayer()->getUID());
if (!pass)
{
pass = &_renderModel.addPass();
pass->setLayer(model->getLayer());
}
}
}
}
}
// Elevation:
const SamplerBinding& elevation = bindings[SamplerBinding::ELEVATION];
if (elevation.isActive() && model->elevationModel().valid() && model->elevationModel()->getTexture())
{
osg::Texture* tex = model->elevationModel()->getTexture();
// always keep the elevation image around because we use it for bounding box computation:
tex->setUnRefImageDataAfterApply(false);
_renderModel._sharedSamplers[SamplerBinding::ELEVATION]._texture = tex;
_renderModel._sharedSamplers[SamplerBinding::ELEVATION]._matrix.makeIdentity();
setElevationRaster(tex->getImage(0), osg::Matrixf::identity());
newElevationData = true;
}
// Normals:
const SamplerBinding& normals = bindings[SamplerBinding::NORMAL];
if (normals.isActive() && model->normalModel().valid() && model->normalModel()->getTexture())
{
osg::Texture* tex = model->normalModel()->getTexture();
// keep the normal map around because we might update it later in "ping"
tex->setUnRefImageDataAfterApply(false);
_renderModel._sharedSamplers[SamplerBinding::NORMAL]._texture = tex;
_renderModel._sharedSamplers[SamplerBinding::NORMAL]._matrix.makeIdentity();
updateNormalMap();
}
// Other Shared Layers:
for (unsigned i = 0; i < model->sharedLayers().size(); ++i)
{
TerrainTileImageLayerModel* layerModel = model->sharedLayers()[i].get();
if (layerModel->getTexture())
{
// locate the shared binding corresponding to this layer:
UID uid = layerModel->getImageLayer()->getUID();
unsigned bindingIndex = INT_MAX;
for(unsigned i=SamplerBinding::SHARED; i<bindings.size() && bindingIndex==INT_MAX; ++i) {
if (bindings[i].isActive() && bindings[i].sourceUID().isSetTo(uid)) {
bindingIndex = i;
}
}
if (bindingIndex < INT_MAX)
{
osg::Texture* tex = layerModel->getTexture();
_renderModel._sharedSamplers[bindingIndex]._texture = tex;
_renderModel._sharedSamplers[bindingIndex]._matrix.makeIdentity();
}
}
}
// Patch Layers
for (unsigned i = 0; i < model->patchLayers().size(); ++i)
{
TerrainTilePatchLayerModel* layerModel = model->patchLayers()[i].get();
}
if (_childrenReady)
{
getSubTile(0)->refreshInheritedData(this, bindings);
getSubTile(1)->refreshInheritedData(this, bindings);
getSubTile(2)->refreshInheritedData(this, bindings);
getSubTile(3)->refreshInheritedData(this, bindings);
}
if (newElevationData)
{
_context->getEngine()->getTerrain()->notifyTileAdded(getKey(), this);
}
}
// invoke runs in the background pager thread.
void
LoadTileData::invoke()
{
osg::ref_ptr<TileNode> tilenode;
if ( _tilenode.lock(tilenode) )
{
// Assemble all the components necessary to display this tile
_model = _context->getEngine()->createTileModel(
_context->getMapFrame(),
tilenode->getTileKey(),
0L ); // progress
// Prep the stateset for merging (and for GL pre-compile).
if ( _model.valid() )
{
const RenderBindings& bindings = _context->getRenderBindings();
osg::StateSet* stateSet = getStateSet();
// Insert all the color layers into a new MPTexture state attribute,
// which exists to facilitate GL pre-compilation.
if ( _model->colorLayers().size() > 0 )
{
const SamplerBinding* colorBinding = SamplerBinding::findUsage(bindings, SamplerBinding::COLOR);
if ( colorBinding )
{
osg::ref_ptr<MPTexture> mptex = new MPTexture();
for(TerrainTileImageLayerModelVector::iterator i = _model->colorLayers().begin();
i != _model->colorLayers().end();
++i)
{
TerrainTileImageLayerModel* layerModel = i->get();
if ( layerModel && layerModel->getTexture() )
{
mptex->setLayer( layerModel->getImageLayer(), layerModel->getTexture(), layerModel->getOrder() );
}
}
if ( !mptex->getPasses().empty() )
{
stateSet->setTextureAttribute(
colorBinding->unit(),
mptex );
}
}
}
// Insert the elevation texture and an identity matrix:
if ( _model->elevationModel().valid() && _model->elevationModel()->getTexture())
{
const SamplerBinding* binding = SamplerBinding::findUsage(bindings, SamplerBinding::ELEVATION);
if ( binding )
{
stateSet->setTextureAttribute(
binding->unit(),
_model->elevationModel()->getTexture() );
stateSet->removeUniform(binding->matrixName());
stateSet->addUniform( _context->getOrCreateMatrixUniform(
binding->matrixName(),
osg::Matrixf::identity() ) );
}
}
// Insert the normal texture and an identity matrix:
if ( _model->normalModel().valid() && _model->normalModel()->getTexture() )
{
const SamplerBinding* binding = SamplerBinding::findUsage(bindings, SamplerBinding::NORMAL);
if ( binding )
{
stateSet->setTextureAttribute(
binding->unit(),
_model->normalModel()->getTexture() );
stateSet->removeUniform(binding->matrixName());
stateSet->addUniform( _context->getOrCreateMatrixUniform(
binding->matrixName(),
osg::Matrixf::identity() ) );
}
}
// Process any shared image layers, each of which should have its
// own sampler binding point
for(TerrainTileImageLayerModelVector::iterator i = _model->sharedLayers().begin();
i != _model->sharedLayers().end();
++i)
{
TerrainTileImageLayerModel* layerModel = i->get();
if ( layerModel->getTexture() )
{
const SamplerBinding* binding = SamplerBinding::findUID(bindings, layerModel->getImageLayer()->getUID());
if ( binding )
{
stateSet->setTextureAttribute(
binding->unit(),
layerModel->getTexture() );
stateSet->removeUniform(binding->matrixName());
stateSet->addUniform( _context->getOrCreateMatrixUniform(
binding->matrixName(),
osg::Matrixf::identity() ) );
}
}
}
}
}
}