Hiya.. Im just rendering a simpel pice of a bar disk.... But when i render it the fps peeks down from 2500 (Nothing rendering except som UI and Text and light When i render the disk the ftp pops down to 1600 and with another one i go down to 1000.. I know it kind of hi FPS.. but i mean a full 3d scen consist of many more objects then that.. The following code i use to load the Mesh from an X file I allso use D3DDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW); D3DDevice->SetRenderState(D3DRS_ZENABLE, TRUE );

VOID Mesh::CreateFromFile(LPCTSTR Name, LPCTSTR FileName)
{
	LPD3DXBUFFER D3DXMtrlBuffer;

	Meshes.Name = Name;


	
	if( FAILED( D3DXLoadMeshFromX( FileName, D3DXMESH_MANAGED, 
                                   D3DDevice, NULL, 
                                   &D3DXMtrlBuffer, NULL, &Meshes.NumMaterials, 
                                   &Meshes.Mesh ) ) )
    {
        MessageBox(NULL, "Could not find tiger.x", "Meshes.exe", MB_OK);
    }


	D3DXMATERIAL* d3dxMaterials = (D3DXMATERIAL*)D3DXMtrlBuffer->GetBufferPointer();
    Meshes.Materials = new D3DMATERIAL9[Meshes.NumMaterials];

    Meshes.Textures  = new LPDIRECT3DTEXTURE9[Meshes.NumMaterials];

    for( DWORD i=0; i<Meshes.NumMaterials; i++ )
    {
        Meshes.Materials = d3dxMaterials.MatD3D;
        Meshes.Materials.Ambient = Meshes.Materials.Diffuse;

        Meshes.Textures = NULL;
        if( d3dxMaterials.pTextureFilename != NULL && 
            lstrlen(d3dxMaterials.pTextureFilename) > 0 )

        D3DXCreateTextureFromFile( D3DDevice, d3dxMaterials.pTextureFilename, &Meshes.Textures );
    }

	DWORD *rgdwAdjacency = NULL;
	rgdwAdjacency = new DWORD[Meshes.Mesh->GetNumFaces() * 3];

    Meshes.Mesh->GenerateAdjacency(1e-6f,rgdwAdjacency);


	Meshes.Mesh->OptimizeInplace(D3DXMESHOPT_COMPACT | D3DXMESHOPT_ATTRSORT | D3DXMESHOPT_VERTEXCACHE, 
												rgdwAdjacency, NULL, NULL, NULL);

	
	delete []rgdwAdjacency;
	

	Meshes.SetPos = false;
	Meshes.SetRot = false;
	Meshes.SetScale = false;

	D3DDevice->GetTransform( D3DTS_WORLD, &Meshes.PosMatrix);
	D3DDevice->GetTransform( D3DTS_WORLD, &Meshes.RotMatrix);
	D3DDevice->GetTransform( D3DTS_WORLD, &Meshes.ScaleMatrix);
	D3DDevice->GetTransform( D3DTS_WORLD, &Meshes.WorldMatrix);

    D3DXMtrlBuffer->Release();
}

and i use the folloing code to render

VOID Mesh::Render()
{
	D3DXMATRIX WorldMatrix;
	D3DXMATRIX TmpMatrix;
	D3DXMATRIX TmpMatrix2;

	D3DDevice->GetTransform( D3DTS_WORLD, &WorldMatrix);
	if(Meshes.SetPos == true)
	{
		D3DDevice->GetTransform( D3DTS_WORLD, &Meshes.PosMatrix);
		D3DXMatrixTranslation( &Meshes.PosMatrix, Meshes.Position.x, Meshes.Position.y, Meshes.Position.z);
	}

	if(Meshes.SetRot == true)
	{
		D3DDevice->GetTransform( D3DTS_WORLD, &Meshes.RotMatrix);
		D3DXMatrixRotationYawPitchRoll( &Meshes.RotMatrix, Meshes.Rotation.x, Meshes.Rotation.y, Meshes.Rotation.z);
	}

	if(Meshes.SetScale == true)
	{
		D3DDevice->GetTransform( D3DTS_WORLD, &Meshes.ScaleMatrix);
		D3DDevice->GetTransform( D3DTS_WORLD, &TmpMatrix2);
		D3DXMatrixScaling( &Meshes.ScaleMatrix, Meshes.Scale.x, Meshes.Scale.y, Meshes.Scale.z);
		D3DXMatrixMultiply(&Meshes.ScaleMatrix, &TmpMatrix2, &Meshes.ScaleMatrix);
        
	}

	if(Meshes.SetPos == true || Meshes.SetRot == true || Meshes.SetScale == true)
	{
		D3DXMatrixMultiply(&TmpMatrix, &Meshes.RotMatrix, &Meshes.ScaleMatrix);
		D3DXMatrixMultiply(&TmpMatrix, &TmpMatrix, &Meshes.PosMatrix);
		D3DXMatrixMultiply(&Meshes.WorldMatrix, &WorldMatrix, &TmpMatrix);
		Meshes.SetScale = false;
		Meshes.SetRot = false;
		Meshes.SetPos = false;
	}

	D3DDevice->SetTransform( D3DTS_WORLD, &Meshes.WorldMatrix);

	for( DWORD i=0; i<Meshes.NumMaterials; i++ )
    {
		D3DDevice->SetMaterial( &Meshes.Materials );
		D3DDevice->SetTexture( 0, Meshes.Textures );
        
        Meshes.Mesh->DrawSubset( i );
    }

	D3DDevice->SetTransform( D3DTS_WORLD, &WorldMatrix);
}

Maybe there is a better way to position the meshes.. or is it the drawsubset that steals the fps ??

Hi It's Me Again :P

There's a few things i would like to comment on your code...

First, your matrices usage...
You have a class named Mesh (which i supposed implements the behaviours of a 3D Object). So this class should implement a function like GetTransformsMatrix();

For my part, if i simplify my design, i have CObject3D, CCamera, CEntity. CObject3D implement thoses 3D behaviours and it is an abstract class, GetTransformationsMatrix is defined in here). CCamera override it to implements it own GetTransformationsMatrix() since everything is inversed.

You do not need to do, and you dont want to use GetTransformMatrix...
Your object should already know its position, orientation and scaling, it's a matters of mupliying the Rotation, Scale and Translation matrices.

My render sequence ressemble to this:



And also, i normaly use the Optimize function instead of OptimizeInPlace, which optimize a clone of the Mesh. However, this shoulnt be a problem.

I'm very curious about your framerate, looking at your renderloop, its seems not too bad. What else is running in your GameLoop?

Jonathan

[Edited by - LowRad on January 2, 2006 11:00:02 PM]

If you wanna see a system that is similar to the one i used to manage all thoses transformations and objects..

Take a look at : http://www.geometrictools.com/Books/GameEngineArchitecture/BookSample.pdf

Or SceneGraph at this link or search google:
http://www.gamedev.net/community/forums/topic.asp?topic_id=349829