inversion of GetRenderTargetData

akira32

GetRenderTargetData is used to copys the render-target data from device memory to system memory. If I want to inverse the operation(from system memory to device memory), how do I do that?

akira32

I use DirectX9 and try to use StrechRect to copy texture. I just try the creation of texture. So my method is very strange.

In the line 29, pSmTile->m_pShadowMapSurf and m_pShadowMapSurf are RenderTraget Texture's surface. The copy between them is all right. But in the line 30, I try to copy the Texture Loading from file to RenderTraget Texture's surface.

The function of StretchRect always return "D3DERR_INVALIDCALL -2005530516". I see the MSDN that the StretchRect can support the Destination of RT texture no matter source format.

How do I solve this problem? And then let line 30 return S_OK.
I also try UpdateSurface in line31, it still return "D3DERR_INVALIDCALL -2005530516". I think the reason the source surface is not created with D3DPOOL_SYSTEMMEM. But how do I copy the texture loading from xfile to the RenderTarget texture? That is very strange.

1. 
   
2.         HRESULT hr;
   
3. 
   
4.         ReleaseSMTexture();
   
5.         //CreateSMTexture();
   
6. 
   
7.         V_RETURN(m_pd3dDevice->CreateTexture(
   
8.                 SHADOW_MAP_SIZE,
   
9.                 SHADOW_MAP_SIZE,
   
10.                 1,
    
11.                 D3DUSAGE_RENDERTARGET,
    
12.                 SHADOW_MAP_FORMAT,
    
13.                 D3DPOOL_DEFAULT,
    
14.                 &m_pShadowMapTex,
    
15.                 NULL
    
16.                 ));
    
17. 
    
18.         V_RETURN(m_pShadowMapTex->GetSurfaceLevel(0, &m_pShadowMapSurf));
    
19. 
    
20.         V_RETURN(m_pd3dDevice->CreateDepthStencilSurface(
    
21.                 SHADOW_MAP_SIZE,
    
22.                 SHADOW_MAP_SIZE,
    
23.                 D3DFMT_D24S8,
    
24.                 D3DMULTISAMPLE_NONE,
    
25.                 0,
    
26.                 TRUE,
    
27.                 &m_pShadowMapZ,
    
28.                 NULL
    
29.                 ));
    
30.                
    
31.         LPDIRECT3DTEXTURE9 pTex;
    
32.         LPDIRECT3DSURFACE9 pSourceSurface;
    
33. 
    
34.         hr=D3DXCreateTextureFromFile( m_pd3dDevice, L"Texture.bmp", &pTex );
    
35.         hr=pTex->GetSurfaceLevel(0,&pSourceSurface);
    
36. 
    
37.         //StretchRect for Dest format=RT texture
    
38. line29=>//hr=m_pd3dDevice->StretchRect(pSmTile->m_pShadowMapSurf,NULL,m_pShadowMapSurf,NULL,D3DTEXF_LINEAR); //S_OK
    
39. line30=>//hr=m_pd3dDevice->StretchRect(pSourceSurface,NULL,m_pShadowMapSurf,NULL,D3DTEXF_LINEAR); //D3DERR_INVALIDCALL -2005530516
    
40. line31=>hr=m_pd3dDevice->UpdateSurface(pSourceSurface,NULL,m_pShadowMapSurf,NULL); //D3DERR_INVALIDCALL -2005530516
    
41. 
    
42.         hr=D3DXSaveTextureToFile(L"t1.png",D3DXIFF_PNG ,m_pShadowMapTex,NULL);
    
43. 
    
44.         SAFE_RELEASE(pTex);
    
45.         SAFE_RELEASE(pSourceSurface);
    

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