I am familiar with the simple tutorials included with DirectX 8.1-everything i tested out with that had worked well so far. Now i want to use the DirectX-Framework (d3dapp) to write an independent application When i am using the "DrawPrimitive"-Method in my Render-Method of the application the Debug-Output of the DrawPrimitive-Method says: "... Direct3d8: (ERROR) :Cannot invert view matrix" - i have no idea at all what this error-message means. Consequently nothing is drawn. I have not modified the camera, world or projection-matrices at all - i have left in the same status as they were before in my chosen sample (my code was adopt by the sample "text3d";i have simply commendet out the parts that i have not needed). In the renderstate-settings i have disabled light, since in my FVF i am using only RGB and Diffuse color. I simply want the sample-framework to draw a stupid triangle like in the tutorial too. With that i could build my own application. I would be glad if someone could help me!

I also had the same problem. I just rewrote my code and it went away. *shrugs*

Hey thanks Sheep and IndirectX for your promt help!

To IndirectX:
Here is the code that sets up the matrices:

Part of: HRESULT CMyD3DApplication::RestoreDeviceObjects()
codeBegin----------------------------------------------------
...
// Set the transform matrices
D3DXVECTOR3 vEyePt = D3DXVECTOR3( 0.0f,-5.0f, 0.0f );
D3DXVECTOR3 vLookatPt = D3DXVECTOR3( 0.0f, 0.0f, 0.0f );
D3DXVECTOR3 vUpVec = D3DXVECTOR3( 0.0f, 1.0f, 0.0f );
D3DXMATRIX matWorld, matView, matProj;

D3DXMatrixIdentity( &matWorld );
D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
FLOAT fAspect = m_d3dsdBackBuffer.Width / (FLOAT)
m_d3dsdBackBuffer.Height;
D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, fAspect,
1.0f, 100.0f );

m_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld );
m_pd3dDevice->SetTransform( D3DTS_VIEW, &matView );
m_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );
...
codeEnd------------------------------------------------------

Hmmm...try posting your drawing code.

ok, here is the Rendering Code:


//--------------
//Method Render
//--------------
HRESULT CTriangle::Render() {
HRESULT hr;

m_pd3dDevice->SetVertexShader( CFUNCTION_VERTEX_FORMAT );
BYTE* pData = 0;

//Lock the vertex buffer
hr = m_pVB->Lock( 0, 0, &pData, 0 );
if( FAILED( hr ) )
{
SAFE_RELEASE( m_pVB );
return E_FAIL;
}

//Copy the face vertices into the buffer
CopyMemory( pData, (void*)m_pVertices, sizeof(
CFunctionVertex ) * 3 );

//Unlock the Vertex Buffer:
m_pVB->Unlock();

//Connect the vertex buffer to a rendering steam
m_pd3dDevice->SetStreamSource( 0, m_pVB, sizeof(
CFunctionVertex ) );


m_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLELIST, 0, 1 );

return( S_OK );
} //Render


I hope this helps analysing my problem.
If nothing doesn´t work i will write the whole code again, just like you, Sheep