Rendering to multiple windows SDK

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Rendering to multiple windows SDK #466207 05/31/17 21:12 05/31/17 21:12
Joined: Jul 2006 Posts: 783 London, UK sheefo OP User
sheefo OP User Joined: Jul 2006 Posts: 783 London, UK	I have tried everywhere and found that this is the only place to find results. I am trying to create a second window using the C++ SDK, but I am having trouble rendering to the second window. I have created a new window and Swap Chain (following the Microsoft documentation), but I don't know how else to proceed. IDirect3DDevice9::Begin and IDirect3DDevice9::End calls cause strange results. Can someone advise me on how to correctly setup a second window in which to render another scene. It is intended to debug render targets at runtime. Thanks.

Re: Rendering to multiple windows SDK [Re: sheefo] #466367 06/12/17 07:53 06/12/17 07:53
Joined: Jul 2000 Posts: 27,978 Frankfurt jcl Chief Engineer
jcl Chief Engineer Joined: Jul 2000 Posts: 27,978 Frankfurt	Do you mean multiple viewports inside the same window, or really multiple windows? In the latter case the simplest way probably would be running several engine instances.

Re: Rendering to multiple windows SDK [Re: jcl] #466508 06/18/17 22:25 06/18/17 22:25
Joined: Jul 2006 Posts: 783 London, UK sheefo OP User
sheefo OP User Joined: Jul 2006 Posts: 783 London, UK	I intended to have multiple windows with shared resources. I attempted to implement it [blindly] by creating a second HWND and using IDirect3DDevice9::CreateAdditionalSwapChain(). Is this is correct method of implementation? I have two windows, but I don't know how to differentiate rendering between them. The engine window is GREEN from the call to draw_quad(), but RED when I uncomment IDirect3DDevice9::BeginScene() and IDirect3DDevice9::EndScene(). The second window remains black. Code: do { if (v(key_esc)) { break; } IDirect3DDevice9* pExtraDevice; g_pSwapChain->GetDevice(&pExtraDevice); //pExtraDevice->BeginScene(); pExtraDevice->Clear(0, nullptr, D3DCLEAR_TARGET, D3DCOLOR_RGBA(255, 0, 0, 255), 1.0f, 0x00000000); //pExtraDevice->EndScene(); g_pSwapChain->Present(0, 0, 0, 0, 0); pExtraDevice->Release(); draw_quad(nullptr, _vec(0.0f, 0.0f, 0.0f), nullptr, &v(screen_size), nullptr, (COLOR*)_vec(0.0f, 255.0f, 0.0f), _VAR(100), _VAR(0)); } while (engine_frame());

Re: Rendering to multiple windows SDK [Re: sheefo] #466518 06/19/17 08:23 06/19/17 08:23
Joined: Jul 2000 Posts: 27,978 Frankfurt jcl Chief Engineer
jcl Chief Engineer Joined: Jul 2000 Posts: 27,978 Frankfurt	I'm not so deep in DirectX that I can directly answer that question. I would normally suppose that BeginScene() and EndScene() switches rendering to the extra device, and EndScene() and SwapChain->Present() must be called _after_ draw_quad. But maybe you can get better information on a DirectX forum.

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