BloodyMess Ogre::Terrain heightfield fps drop to zero

hi, every one!

i'm using ogre1.7+BloodyMess.
when i want to create a heightfield with the method from below url
http://www.ogre3d.org/wiki/index.php/BloodyMess_Ogre::Terrain_Heightfield
the ogre render fps will drop to 0, and triangle will up to even 400 thousand.

i create the ogre terrain lwith below code,
mTerrainGlobals = OGRE_NEW Ogre::TerrainGlobalOptions();
mTerrain = OGRE_NEW Ogre::Terrain(mSceneMgr);

Ogre::Image img;
img.load("terrain.png", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
mTerrainGlobals->setMaxPixelError(8);
mTerrainGlobals->setCompositeMapDistance(3000);
TerrainMaterialGeneratorA::SM2Profile* matProfile =
static_cast<TerrainMaterialGeneratorA::SM2Profile*>(mTerrainGlobals->getDefaultMaterialGenerator()->getActiveProfile());
mTerrainGlobals->setLightMapDirection(l->getDerivedDirection());
mTerrainGlobals->setCompositeMapAmbient(mSceneMgr->getAmbientLight());
mTerrainGlobals->setCompositeMapDiffuse(l->getDiffuseColour());

Ogre::Terrain::ImportData defaultimp;
defaultimp.terrainSize = TERRAIN_SIZE;
defaultimp.worldSize = TERRAIN_WORLD_SIZE;
defaultimp.inputScale = 600;
defaultimp.minBatchSize = 33;
defaultimp.maxBatchSize = 65;
defaultimp.inputImage = &img;

// textures
defaultimp.layerList.resize(3);
defaultimp.layerList[0].worldSize = 100;
defaultimp.layerList[0].textureNames.push_back("dirt_grayrocky_diffusespecular.dds");
defaultimp.layerList[0].textureNames.push_back("dirt_grayrocky_normalheight.dds");
defaultimp.layerList[1].worldSize = 30;
defaultimp.layerList[1].textureNames.push_back("grass_green-01_diffusespecular.dds");
defaultimp.layerList[1].textureNames.push_back("grass_green-01_normalheight.dds");
defaultimp.layerList[2].worldSize = 200;
defaultimp.layerList[2].textureNames.push_back("growth_weirdfungus-03_diffusespecular.dds");
defaultimp.layerList[2].textureNames.push_back("growth_weirdfungus-03_normalheight.dds");

mTerrain->prepare(defaultimp);
mTerrain->load();

Ogre::TerrainLayerBlendMap* blendMap0 = mTerrain->getLayerBlendMap(1);
Ogre::TerrainLayerBlendMap* blendMap1 = mTerrain->getLayerBlendMap(2);
Ogre::Real minHeight0 = 70;
Ogre::Real fadeDist0 = 40;
Ogre::Real minHeight1 = 70;
Ogre::Real fadeDist1 = 15;
float* pBlend0 = blendMap0->getBlendPointer();
float* pBlend1 = blendMap1->getBlendPointer();
for (Ogre::uint16 y = 0; y < mTerrain->getLayerBlendMapSize(); ++y)
{
for (Ogre::uint16 x = 0; x < mTerrain->getLayerBlendMapSize(); ++x)
{
Ogre::Real tx, ty;

blendMap0->convertImageToTerrainSpace(x, y, &tx, &ty);
Ogre::Real height = mTerrain->getHeightAtTerrainPosition(tx, ty);
Ogre::Real val = (height - minHeight0) / fadeDist0;
val = Ogre::Math::Clamp(val, (Ogre::Real)0, (Ogre::Real)1);

val = (height - minHeight1) / fadeDist1;
val = Ogre::Math::Clamp(val, (Ogre::Real)0, (Ogre::Real)1);
*pBlend1++ = val * 255;
}
}
blendMap0->dirty();
blendMap1->dirty();
blendMap0->update();
blendMap1->update();

loadTerrainGeometry(mTerrain->getMaterialName(), mTerrain->getHeightData(), mTerrain->getSize(),
mTerrain->getWorldSize(), mTerrain->getMinHeight(), mTerrain->getMaxHeight(), mTerrain->getPosition());

mTerrain->freeTemporaryResources();



and the loadTerrainGeometry method code is below,
void loadTerrainGeometry(const Ogre::String& name, float* data, Ogre::uint16 size, Ogre::Real worldSize, Ogre::Real minHeight, Ogre::Real maxHeight, const Ogre::Vector3& position)
{
// Create the manual heightfield
NxOgre::ManualHeightField *mhf = OGRE_NEW_T(NxOgre::ManualHeightField, Ogre::MEMCATEGORY_GENERAL)();
mhf->begin(size, size);
Ogre::Real normMin = -32767.0f;
Ogre::Real normMax = 32767.0f;
// Sample the data to the manual heightfield
for(int x = 0; x < size; ++x)
{
NxOgre::Enums::HeightFieldTesselation tess = NxOgre::Enums::HeightFieldTesselation_NW_SE;
for(int z = size-1; z >= 0; --z)
{
Ogre::Real height = data[(size * z) + x];
short sample = (short)(((height - minHeight) / (maxHeight - minHeight)) * (normMax - normMin) + normMin);
mhf->sample(sample, 0, 0, tess);
if(tess == NxOgre::Enums::HeightFieldTesselation_NE_SW)
tess = NxOgre::Enums::HeightFieldTesselation_NW_SE;
else
tess = NxOgre::Enums::HeightFieldTesselation_NE_SW;
}
}

// Create the actual heightfield
NxOgre::HeightField *hf = mhf->end(name.c_str());
Ogre::Real hf_size = worldSize + (worldSize / size);
Ogre::Real hf_height = (maxHeight - minHeight) / 2.0f;
Ogre::Real hf_pose_x = position.x - (worldSize / 2.0f);
Ogre::Real hf_pose_y = position.y + ((maxHeight + minHeight) / 2.0f);
Ogre::Real hf_pose_z = position.z - (worldSize / 2.0f);
#if NxOgreVersionMajor <= 1 && NxOgreVersionMinor <= 5
NxOgre::HeightFieldGeometry* hfg = new NxOgre::HeightFieldGeometry(hf, NxOgre::Vec3(hf_size, hf_height, hf_size));
hfg->setLocalPose(NxOgre::Matrix44(NxOgre::Vec3(hf_pose_x, hf_pose_y, hf_pose_z)));
mScene->createSceneGeometry(hfg);
#else
NxOgre::HeightFieldGeometryDescription desc(hf, NxOgre::Vec3(hf_size, hf_height, hf_size));
mScene->createSceneGeometry(desc, NxOgre::Matrix44(NxOgre::Vec3(hf_pose_x, hf_pose_y, hf_pose_z)));
#endif
// Free memory
OGRE_DELETE_T(mhf, ManualHeightField, Ogre::MEMCATEGORY_GENERAL);
}


does anyone kown about this?
help me to solve this, thans very much!

Make sure the visualisation flags in the HeightfieldGeometryDescription is off. That is usually the culprit.

Make sure the visualisation flags in the HeightfieldGeometryDescription is off. That is usually the culprit.

thanks for your reply!

i'm using nxogre1.5.5, i cannot find the HeightfieldGeometryDescription.

i only find this,
class NxHeightFieldDesc; //< \internal Prototyped class. DO NOT USE.
so the class NxHeightFieldDesc looks like can not use in app.

can you tell me how to do it? i am a newer to this, .

Oh your using BloodyMess, then I mean "HeightFieldGeometryBlueprint"

Make sure the flags in it are set to zero, when passing it to your HeightFieldGeometry.

Oh your using BloodyMess, then I mean "HeightFieldGeometryBlueprint"

Make sure the flags in it are set to zero, when passing it to your HeightFieldGeometry.

thanks again,

do you mean below?
NxOgre::HeightFieldGeometryBlueprint* blue = new HeightFieldGeometryBlueprint();
blue->mFlags=0;
blue->mHeightField=0;

NxOgre::HeightFieldGeometry* hfg = new NxOgre::HeightFieldGeometry(hf, NxOgre::Vec3(hf_size, hf_height, hf_size),blue);
hfg->setLocalPose(NxOgre::Matrix44(NxOgre::Vec3(hf_pose_x, hf_pose_y, hf_pose_z)));
mScene->createSceneGeometry(hfg);

there are many flags in blue,all are set to zero, or just some special?