memory grow continuously,why?

[dujimache]

Code: Select all

#include <irrlicht.h>
#pragma comment(lib,"irrlicht.lib")

using namespace irr;

IrrlichtDevice* device;
video::IVideoDriver* driver;
scene::ISceneManager* smgr;

class CCustomSceneNode:public scene::ISceneNode
{
	core::aabbox3d<f32> Box;
	video::SMaterial Material;
	video::S3DVertex vtx[11];
	u16 indices1[30];
	scene::SMeshBuffer* buffer;
	scene::SMesh* mesh;
	scene::SAnimatedMesh* animatedMesh;
	

public:
	CCustomSceneNode(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id):scene::ISceneNode(parent, mgr, id)
	{
		Material.Wireframe = true;
		Material.Lighting = false;

		buffer = new scene::SMeshBuffer();
		vtx->Color.set(255,255,0,0);
		float step = core::PI * 2 / 10;
		vtx[0].Pos.X = 0;
		vtx[0].Pos.Y = -50;
		vtx[0].Pos.Z = 0;
		buffer->Vertices.push_back(vtx[0]);
		animatedMesh = new scene::SAnimatedMesh();
		float r = 250;
		int i;
		for (i = 1 ; i <= 10; i ++)
		{
			vtx[i].Pos.X = r * cosf(i * step);
			vtx[i].Pos.Y = vtx[0].Pos.Y;
			vtx[i].Pos.Z = r * sinf(i * step);
			buffer->Vertices.push_back(vtx[i]);
		}
		
		int j = 0;
		for (i = 0,j = 0; i < 27; i= i + 3,j ++)
		{
			indices1[i] = j+2;
			indices1[i+1] = j + 1;
			indices1[i+2] = 0;
			buffer->Indices.push_back(j+2);
			buffer->Indices.push_back(j + 1);
			buffer->Indices.push_back(0);
		}
		indices1[i] = 1;
		indices1[i+1] = j +1;
		indices1[i+2] = 0;

		buffer->Indices.push_back(1);
		buffer->Indices.push_back(j + 1);
		buffer->Indices.push_back(0);

		buffer->recalculateBoundingBox();

		mesh = new scene::SMesh();
		mesh->addMeshBuffer(buffer);
		mesh->recalculateBoundingBox();
		buffer->drop();

	}
	virtual void OnRegisterSceneNode()
	{
		if (IsVisible)
			SceneManager->registerNodeForRendering(this);
		ISceneNode::OnRegisterSceneNode();
	}
	virtual void render()
	{
		driver->setMaterial(Material);
		driver->setTransform(video::ETS_WORLD,AbsoluteTransformation);
		driver->drawIndexedTriangleList(vtx,30,indices1,10);


		//section to add a round mesh and add water effect to it
		
		if (!animatedMesh)
		{
			mesh->drop();
			return ;
		}
		animatedMesh->addMesh(mesh);
		mesh->drop();
		if (!mesh)
			return;
		smgr->getMeshCache()->addMesh("round",animatedMesh);
		animatedMesh->drop();

		scene::ISceneNode* node = smgr->addWaterSurfaceSceneNode(animatedMesh, 3.0f, 300.0f, 30.0f);
		node->setPosition(core::vector3df(0,-10,0));

		node->setMaterialTexture(0, driver->getTexture("stones.jpg"));
		node->setMaterialTexture(1, driver->getTexture("water.jpg"));
		node->setMaterialType(video::EMT_REFLECTION_2_LAYER);

		node = smgr->addLightSceneNode(0, core::vector3df(0,80,0),
			video::SColorf(1.0f, 0.6f, 0.7f, 1.0f), 800.0f);
	}
	virtual const core::aabbox3d<f32>& getBoundingBox() const
	{
		return Box;
	}
	virtual video::SMaterial& getMaterial(u32 i)
	{
		return Material;
	} 


};

int main()
{
	device = createDevice(video::EDT_OPENGL,core::dimension2d<s32>(640,480),16,false);
	device->setWindowCaption(L"custom scene node - irrlicht engine demo");
	driver = device->getVideoDriver();
	smgr = device->getSceneManager();
	smgr->addCameraSceneNodeFPS();
	CCustomSceneNode* myNode = new CCustomSceneNode(smgr->getRootSceneNode(),smgr,666);
	myNode->drop();

	while(device->run())  
	{   
		driver->beginScene(true, true, video::SColor(0,100,100,100));
		smgr->drawAll();
		driver->endScene();
	}
	device->drop();
	return 0;
}

i create a round mesh,and add water effect on it ,but when the program is implementing,the memory grows continously,why?
the round mesh has ten points.

[devsh]

because you keep adding meshes in the render function (gets called every drawAll)

[dujimache]

yes ,thank you ,i find the problem