C++

Forum

 
Directx rendering problem

yakobom (2)
Hi,

I'm trying to render something I get from a COM interface. The image I get from the interface is ok (checked by printing the DC I get from the surface), but still I get a black image. All DX calls return S_OK.

Here's my code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
 
BOOL FlashPlayer::Render()
{	
	HRESULT hr; 
	
	if (m_pRenderTexture && m_pVertexBuffer)
	{

		LPDIRECT3DSURFACE9 pRenderSurface = NULL, pRenderSurfaceTMP = NULL;
	
		hr = m_pRenderTexture->GetSurfaceLevel(0, &pRenderSurface);
		if (pRenderSurface == NULL)
			return FALSE;
	
		hr = m_pD3DDevice->CreateOffscreenPlainSurface(m_nWidth, m_nHeight,
			D3DFMT_X8R8G8B8, D3DPOOL_SYSTEMMEM, &pRenderSurfaceTMP, 0);

		if (FAILED(hr))
			int delme = 1;

		hr = m_pD3DDevice->GetRenderTargetData(pRenderSurface,pRenderSurfaceTMP);

		if (FAILED(hr))
			int delme = 1;

		HDC hDC = NULL;
		hr = pRenderSurfaceTMP->GetDC(&hDC);
		if (FAILED(hr))
			return FALSE;	

		if (m_pViewObject != NULL)
		{
			// RECT is relative to the windowless container rect
			RECTL rcRect = {0, 0, m_nWidth, m_nHeight};  

			m_hbrBackground = ::CreateSolidBrush(m_dwBackground);
			::FillRect(hDC, (RECT*)&rcRect, m_hbrBackground);

			// Draw onto the DC!
			hr = m_pViewObject->Draw(DVASPECT_CONTENT, 1,
				NULL, NULL, NULL, hDC, &rcRect, NULL, NULL,
				0);
		}

		
			
		// Draw the surface
		hr = m_pD3DDevice->SetStreamSource(0, m_pVertexBuffer, 0, sizeof(Vertex));
		if (FAILED(hr))
			int delme = 1;
		
		hr = m_pD3DDevice->SetTexture( 0, m_pRenderTexture );
		if (FAILED(hr))
			int delme = 1;

	
		
		hr = m_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
		if (FAILED(hr))
			int delme = 1;
		

		
		pRenderSurface->Release();
		::DeleteObject(m_hbrBackground);
                pRenderSurfaceTMP->ReleaseDC(hDC);
		pRenderSurfaceTMP->Release();
		m_hbrBackground = NULL;

		return TRUE;

	}


Any ideas what am I doing wrong?
Last edited on
closed account (o1vk4iN6)
Line 60 looks wrong:

D3DTSS_ALPHAOP,D3DTOP_SELECTARG1);

unless that's a copy error, i don't think it should even be able to compile.
yakobom (2)
Yes, sorry, I deleted a line that was commented out, and left a part of it... I fixed it. So now can you help me? :-)
Topic archived. No new replies allowed.