[Direct3D 9] Resizing window

Hello people

I'm currently learning D3D and so far I'm doing good but I ran into a little problem that I'm not sure how to fix. I'm displaying a quad in window mode and when I resize the window the content is stretched. I tried to use IDirect3DDevice9::Reset() but I had 2 problem with that, it's slow and makes the resizing of the window become laggy and still appeared bigger. I wanna be able to see more of my world, not just see it become bigger. I tried to mess up with IDirect3DDevice9::SetViewport and creating a swap chain but it didn't work (I probably didn't do it right).

Does anyone have any advice or could point to a good resource on that subject? (I can't seem to find any)

Thank you

Since the window extents have changed, you'll need to recreate the device to reflect that change. This can force a perfomance hit, so, you should definitely use a swap chanin. And, you should query the device to ensure that you can create it with hardware acceleration. In my code, I wrote a method that is called whenever I need to release and recreate a new DirectX device.

Thanks for your reply.

I tried the swap chain thing I wasn't able to draw in it... it looked like it was still using the default swap chain (i created the device with a small buffer and everything was still all blurry). Do you know what I was doing wrong?

This was executed every time the window was resized.

D3DPRESENT_PARAMETERS d3dpp = {0};
D3DDISPLAYMODE mode;

if (FAILED(m_d3d->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &mode)))
[...]

d3dpp.Windowed = TRUE;
d3dpp.SwapEffect = D3DSWAPEFFECT_COPY;
d3dpp.BackBufferFormat = mode.Format;
d3dpp.BackBufferWidth = (unsigned int) m_backbufferWidth;
d3dpp.BackBufferHeight = (unsigned int) m_backbufferHeight;
d3dpp.hDeviceWindow = m_hWndTarget;
d3dpp.EnableAutoDepthStencil = TRUE;
d3dpp.AutoDepthStencilFormat = D3DFMT_D16;

SAFE_RELEASE(m_swapChain);
if (FAILED(m_d3dDevice->CreateAdditionalSwapChain(&d3dpp, &m_swapChain)))
[...]
else
{
IDirect3DSurface9 *backBuffer;
m_swapChain->GetBackBuffer(0, D3DBACKBUFFER_TYPE_MONO, &backBuffer);
m_d3dDevice->CreateDepthStencilSurface((unsigned int) m_backbufferWidth, (unsigned int) m_backbufferHeight, mode.Format, D3DMULTISAMPLE_NONE, 0, false, &backBuffer, 0);
m_d3dDevice->SetRenderTarget(0, backBuffer);
}

Thank you,
-Roxanne

The code you posted is taken out of context, so, it's difficult to know how you are using it. Are you responding to WM_SIZE and recreating the device?

Yes, this is when I receive WM_SIZE but I'm not recreating the device, I only create a new swap chain with the new size.

Thank you

Please refer to my earlier post. I think you still need to recreate the device with the new window extents.

Thank you Mike!