question ???build Release pagedGeometry-1.1.0 with ogre 1.7

As title mentioned
In ogre 1.7 getLodIndexSquaredDepth no exist and in pagedGeometry-1.1.0

material->getLodIndex(parent->minDistanceSquared * parent->minDistanceSquared));

instead of

bestTechnqiue = material->getBestTechnique(material->getLodIndexSquaredDepth(parent->minDistanceSquared));

but when i compile example 1 with this(pagedGeometry-1.1.0 ,ogre 1.7, vs2008), i havent seen any trees

then i look for answers in source code

in ogre1.6.5
unsigned short Material::getLodIndex(Real d) const
{
return getLodIndexSquaredDepth(d * d);
}
// --------------------------------------------------------------------
unsigned short Material::getLodIndexSquaredDepth(Real squaredDistance) const
{
LodDistanceList::const_iterator i, iend;
iend = mLodDistances.end();
unsigned short index = 0;
for (i = mLodDistances.begin(); i != iend; ++i, ++index)
{
if (*i > squaredDistance)
{
return index - 1;
}
}

// If we fall all the way through, use the highest value
return static_cast<ushort>(mLodDistances.size() - 1);
}

in ogre1.7
ushort Material::getLodIndex(Real value) const
{
return mLodStrategy->getIndex(value, mLodValues);
}

// Initialise to default strategy
mLodStrategy = LodStrategyManager::getSingleton().getDefaultStrategy();

LodStrategyManager::LodStrategyManager()
{
// Add default (distance) strategy
LodStrategy *distanceStrategy = OGRE_NEW DistanceLodStrategy();
addStrategy(distanceStrategy);

// Add new pixel-count strategy
LodStrategy *pixelCountStrategy = OGRE_NEW PixelCountLodStrategy();
addStrategy(pixelCountStrategy);

// Set the default strategy
setDefaultStrategy(distanceStrategy);

ushort DistanceLodStrategy::getIndex(Real value, const Material::LodValueList& materialLodValueList) const
{
// Get index assuming ascending values
return getIndexAscending(value, materialLodValueList);
}

ushort LodStrategy::getIndexAscending(Real value, const Mesh::MeshLodUsageList& meshLodUsageList)
{
Mesh::MeshLodUsageList::const_iterator i, iend;
iend = meshLodUsageList.end();
ushort index = 0;
for (i = meshLodUsageList.begin(); i != iend; ++i, ++index)
{
[quote] if (i->value > value)[/quote]
{
return index ? index - 1 : 0;
}
}

// If we fall all the way through, use the highest value
return static_cast<ushort>(meshLodUsageList.size() - 1);
}

i think getLodIndex(parent->minDistanceSquared * parent->minDistanceSquared)) is not right
as parent->minDistanceSquared is acturally a squares value you can find this
minDistanceSquared = max(0.0f, centerDistanceSquared - (radius * radius));

so you just past getLodIndex(parent->minDistanceSquared) it is right

but modified this i still cannt seen any trees, i don't kong why ? any one help me ,thanks a lot

cannt seen any trees means that th e render window is blank
no trees no terrain
but when i shut off trees->update(); i can seen the terrain

void World::render()
{
//[NOTE] PagedGeometry::update() is called every frame to keep LODs, etc. up-to-date
trees->update();

//Render the scene with Ogre
root->renderOneFrame();
}

Can you check your Ogre.log for errors? It seems to be working fine here.

-Fish

find answer

my graphics card is ati

when i tried on a nVIDIA card ， it is ok

What ATI model is your video card? Do you get the same results with both OpenGL and DirectX?

edit: make sure you have the newest video card drivers and BIOS updates for your system.

- Fish

My graphics card is PowerColor hd4870 fire 1GB

Directx:
The Render Window is blank, no trees and no terrain

OpenGL:
It show that error on Plugin_CgProgramManager_d.dll, and then appication exit

Then i test example on another card, Nvidia GxForce 5200, very old one, everything is ok

o, my master board is asus, memory is kingston DDR3 1333

did you try to update to latest drivers for your card? Most of the time those problems are caused by hurried out drivers (which gets fixed after a while with a new release)

I update to latest drivers and try again

Run the example app, only a blank window,still no trees and terrain.
After several seconds, there is no response.

In the log, there is no error, donn't know why?

I have simillar troubles. If I use the newest Ogre 1.7.1 (with boost threads) and DirectX9 Renderer 1.7.1, something is wrong and there is no render output. If I downgrade to the renderer 1.7.0 (without downgrade Ogre), render runs correctly. Just try this these changes and give feedback.

It's working fine here under Ogre 1.7.1. It might be an ATI driver issue.

I'm using an nVidia 7900GS.

- Fish