d3d Z-Buffer?

[Wildbreath]

Good time everyone!

I'm trying to work with Direct3DDevice9 (vtable).

Faced with the problem of displaying 3d primitives, it seems that I did something wrong with the z-buffer. Can anyone suggest something? The code works without throwing any errors.


https://i.imgur.com/7OFi9.jpg

Set render states:

device.SetRenderState(D3DRenderStateType.ZENABLE, 1);
device.SetRenderState(D3DRenderStateType.ZWRITEENABLE, 1);
device.SetRenderState(D3DRenderStateType.ZFUNC, (int)D3DCmp.LESSEQUAL);

device.SetRenderState(D3DRenderStateType.ALPHABLENDENABLE, 1);
device.SetRenderState(D3DRenderStateType.SRCBLEND, (int)D3DBlend.SRCALPHA);
device.SetRenderState(D3DRenderStateType.DESTBLEND, (int)D3DBlend.INVSRCALPHA);

device.SetRenderState(D3DRenderStateType.LIGHTING, 0);
device.SetRenderState(D3DRenderStateType.CULLMODE, 0);

world

Matrix worldMatrix = Matrix.Translation(vector) * Matrix.RotationYawPitchRoll(yaw, pitch, roll);
device.SetTransform(D3DTransformStateType.World, &worldMatrix);

view

Camera camera = Camera.GetCamera();

Matrix matrix;
if ( camera == null )
            matrix = Matrix.Identity();
else 
{
            Vector3 eye = camera.Position;
            Vector3 at = eye + camera.Forward();
            Vector3 up = Vector3.Up;

            matrix = Matrix.LookAtRH( eye, at, up );
}

device.SetTransform( D3DTransformStateType.VIEW, &matrix );

projection

Camera camera = Camera.GetCamera();

Matrix matrix;
if ( camera == null )
            matrix = Matrix.Identity();
else 
{
            float fov = camera.GetFov();
            matrix = Matrix.PerspectiveFovRH( fov * 0.6f, camera.Aspect, camera.NearZ, camera.FarZ );
}

device.SetTransform( D3DTransformStateType.PROJECTION, &matrix );

viewport

D3DViewport viewport = device.GetViewport();
viewport.MinZ = 0;
viewport.MaxZ = 0.94f;

device.SetViewport(viewport);

MinZ = 0
MaxZ = 0.94 (got it using hooking HRESULT SetViewport( D3DVIEWPORT9 * pViewport )
other values, seems, for UI and etc (nameplates?)

---
hooked a setViewport and draw but all drawn on game plane :\
anyone had that issue?

[Wildbreath]

noone knows?
still unsolved

[boredevil]

you could try near-/farZ 0.2 1600.0. That works perfect for me. i fail to get correct results using the camera´s values, which were 0/1 when i checked the last time.
i´m counting viewportcalls with min == 0 and max == 1 every frame, then render my stuff in numMaxCalls -2. basically works from -5 to -2.
it´s not perfect, as it hides some of the ui text, and "flickers" when the number of viewport calls changes. but the geom is perfectly in place, that´s what is important for me.

here´s my mess:

void WowWorldRenderCtx::setDeviceStates()
{



	    // check if device supports alphablend
	    bool bSupportsAlphaBlend = true;
	    LPDIRECT3D9 pd3d9 = NULL;
	    if( SUCCEEDED( m_pD3dDevice->GetDirect3D( &pd3d9 ) ) )
	    {
	        D3DCAPS9 Caps;
	        D3DDISPLAYMODE Mode;
	        LPDIRECT3DSURFACE9 pSurf = NULL;
	        D3DSURFACE_DESC Desc;
	        m_pD3dDevice->GetDeviceCaps( &Caps );
	        m_pD3dDevice->GetDisplayMode( 0, &Mode );
	        if( SUCCEEDED( m_pD3dDevice->GetRenderTarget( 0, &pSurf ) ) )
	        {
	            pSurf->GetDesc( &Desc );
	            if( FAILED( pd3d9->CheckDeviceFormat( Caps.AdapterOrdinal, Caps.DeviceType, Mode.Format,
	                D3DUSAGE_RENDERTARGET | D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING, D3DRTYPE_SURFACE,
	                Desc.Format ) ) )
	            {
	                bSupportsAlphaBlend = false;
	            }
	            SAFE_RELEASE( pSurf );
	        }
	        SAFE_RELEASE( pd3d9 );
	    }



	    if(bSupportsAlphaBlend)
	    {
	        m_pD3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, TRUE );
	        m_pD3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
	        m_pD3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
	    }
	    else
	    {
	        m_pD3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, FALSE );
	    }


		m_pD3dDevice->SetRenderState( D3DRS_CULLMODE , 0);
		m_pD3dDevice->SetRenderState(D3DRS_ZENABLE, D3DZB_TRUE);
		m_pD3dDevice->SetRenderState(D3DRS_LIGHTING, FALSE);

	    m_pD3dDevice->SetRenderState(D3DRS_ZWRITEENABLE, TRUE);
	    m_pD3dDevice->SetRenderState(D3DRS_ZFUNC, D3DCMP_LESSEQUAL);

	    m_pD3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_DISABLE );
	    m_pD3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_DISABLE );

	    m_pD3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_TEXTURE);

}

void WowWorldRenderCtx::beginDrawing()
{
    D3DXMATRIX 		 projMatrix;
    D3DXMATRIX 		 viewMatrix;
    D3DXMATRIX 		 worldMatrix;

    // make that stuff member variables..
    float m_AspectRatio = 1680.0 / 1050.0;	// get values from client...
    float m_fFovYMulti = 0.6;
    float m_ZNearPlane = 0.2;
    float m_ZFarPlane = 1600.0;


	CameraInfo* cam = CGWorld::getActiveCamera();

	D3DXMatrixPerspectiveFovRH(&projMatrix, cam->fFov * m_fFovYMulti , m_AspectRatio ,m_ZNearPlane, m_ZFarPlane);

	D3DXVECTOR3 eye = cam->fPos;

    float ppos[3];
    ppos[0] = eye[0] + cam->fViewMat[0][0] ;
    ppos[1] = eye[1] + cam->fViewMat[0][1] ;
    ppos[2]= eye[2] + cam->fViewMat[0][2]  ;



    D3DXVECTOR3 at = ppos ;
    D3DXVECTOR3 upVec(0, 0, 1);
	D3DXMatrixLookAtRH(&viewMatrix, &eye, &at, &upVec);


    // set Transformation matix
    m_pD3dDevice->SetTransform(D3DTS_VIEW, &viewMatrix);
    m_pD3dDevice->SetTransform(D3DTS_PROJECTION, &projMatrix);

    //  move somewhere other/
    D3DXMatrixIdentity(&worldMatrix);
    D3DXMatrixTranslation(&worldMatrix, 0, 0, 0);
    m_pD3dDevice->SetTransform(D3DTS_WORLD, &worldMatrix);


    // setup viewport
    D3DVIEWPORT9 Viewport;
	m_pD3dDevice->GetViewport(&Viewport);
	Viewport.MinZ = m_ZViewPortNearPlane;
	Viewport.MaxZ = m_ZViewPortFarPlane;
	m_pD3dDevice->SetViewport(&Viewport);

	if(m_bWireFramed)
	{
		m_pD3dDevice->SetRenderState( D3DRS_FILLMODE,   D3DFILL_WIREFRAME );
		m_pD3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, FALSE );
	}
	else
	{
		m_pD3dDevice->SetRenderState( D3DRS_FILLMODE,   D3DFILL_SOLID );
		m_pD3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, TRUE );
	}
}

[Wildbreath]

Thank you for your advice, I'll check in the evening and report back. Wasn't know what farZ could be greater than 1 :confused:

[Wildbreath]

Thank very much, solved.

https://i.imgur.com/r1DeX.jpg

+rep ofc