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POEnable AntiAliasing in Direct3D9 (MultiSample Render Target)
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copied!<p>I am trying to enable AA in a D3D9 application, but am not sure how to set up the surfaces correctly. So far, I have:</p> <pre><code>IDirect3DDevice9* m_pd3dDevice; IDirect3DSurface9* screen; IDirect3DSurface9* msaasurf; D3DPRESENT_PARAMETERS m_presentationParameters; </code></pre> <p>Initialization:</p> <pre><code>m_presentationParameters.Windowed = TRUE; m_presentationParameters.SwapEffect = D3DSWAPEFFECT_DISCARD; m_presentationParameters.MultiSampleType = D3DMULTISAMPLE_2_SAMPLES; m_presentationParameters.MultiSampleQuality = 0; m_presentationParameters.BackBufferFormat = D3DFMT_UNKNOWN; m_presentationParameters.EnableAutoDepthStencil = TRUE; m_presentationParameters.AutoDepthStencilFormat = D3DFMT_D16; m_presentationParameters.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE; // create d3d device m_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &m_presentationParameters, &m_pd3dDevice ) // save screen surface m_pd3dDevice->GetRenderTarget(0, &screen); D3DSURFACE_DESC desc; screen->GetDesc(&desc); // Create multisample render target m_pd3dDevice->CreateRenderTarget( 800, 600, D3DFMT_A8R8G8B8, desc.MultiSampleType, desc.MultiSampleQuality, false, &msaasurf, NULL ); </code></pre> <p>And then, for each frame:</p> <pre><code>// render to multisample surface m_pd3dDevice->SetRenderTarget(0, msaasurf); m_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB( 0, 0, 0 ), 1.0f, 0 ); m_pd3dDevice->BeginScene(); // render stuff here m_pd3dDevice->EndScene(); m_pd3dDevice->SetRenderTarget(0, screen); // get back buffer IDirect3DSurface9* backBuffer = NULL; m_pd3dDevice->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &backBuffer); // copy rendertarget to backbuffer m_pd3dDevice->StretchRect(msaasurf, NULL, backBuffer, NULL, D3DTEXF_NONE); backBuffer->Release(); // Present the backbuffer contents to the display m_pd3dDevice->Present(NULL, NULL, NULL, NULL); </code></pre> <p>However, nothing is appearing on my screen (all black). No errors are occuring (I check the return value of all d3d calls). What am I doing wrong? </p>

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