Method BackBufferResized

samples/SampleBase/renderer/Renderer.cpp:270–331

}

void Renderer::BackBufferResized(ID3D11Device* /*device*/, const DXGI_SURFACE_DESC* sd)
{
	// Setup the camera's projection parameters
	m_screenWidth = sd->Width;
	m_screenHeight = sd->Height;
	float fAspectRatio = m_screenWidth / m_screenHeight;
	m_camera.SetProjParams(DirectX::XM_PIDIV4, fAspectRatio, CAMERA_CLIP_NEAR, CAMERA_CLIP_FAR);

	SAFE_RELEASE(m_DSTexture);
	SAFE_RELEASE(m_DSView);
	SAFE_RELEASE(m_DSTextureSRV);

	// create a new Depth-Stencil texture 
	{
		D3D11_TEXTURE2D_DESC desc;
		ZeroMemory(&desc, sizeof(desc));
		desc.Width = sd->Width;
		desc.Height = sd->Height;
		desc.MipLevels = 1;
		desc.ArraySize = 1;
		desc.Format = DXGI_FORMAT_R32_TYPELESS; // Use a typeless type here so that it can be both depth-stencil and shader resource.
		desc.SampleDesc.Count = sd->SampleDesc.Count;
		desc.SampleDesc.Quality = sd->SampleDesc.Quality;
		desc.Usage = D3D11_USAGE_DEFAULT;
		desc.BindFlags = D3D11_BIND_DEPTH_STENCIL | D3D11_BIND_SHADER_RESOURCE;
		desc.CPUAccessFlags = 0;
		desc.MiscFlags = 0;
		V(m_device->CreateTexture2D(&desc, NULL, &m_DSTexture));
	}

	// create Depth-Stencil view
	{
		D3D11_DEPTH_STENCIL_VIEW_DESC desc;
		ZeroMemory(&desc, sizeof(desc));
		desc.ViewDimension = sd->SampleDesc.Count > 1 ? D3D11_DSV_DIMENSION_TEXTURE2DMS : D3D11_DSV_DIMENSION_TEXTURE2D;
		desc.Format = DXGI_FORMAT_D32_FLOAT;	// Make the view see this as D32_FLOAT instead of typeless
		desc.Texture2D.MipSlice = 0;
		V(m_device->CreateDepthStencilView(m_DSTexture, &desc, &m_DSView));
	}

	// create Depth-Stencil shader resource view
	{
		D3D11_SHADER_RESOURCE_VIEW_DESC desc;
		ZeroMemory(&desc, sizeof(desc));
		desc.Format = DXGI_FORMAT_R32_FLOAT;	// Make the shaders see this as R32_FLOAT instead of typeless
		desc.ViewDimension = sd->SampleDesc.Count > 1 ? D3D11_SRV_DIMENSION_TEXTURE2DMS : D3D11_SRV_DIMENSION_TEXTURE2D;
		desc.Texture2D.MipLevels = 1;
		desc.Texture2D.MostDetailedMip = 0;
		V(m_device->CreateShaderResourceView(m_DSTexture, &desc, &m_DSTextureSRV));
	}

	// setup viewport
	m_viewport.Width = (FLOAT)sd->Width;
	m_viewport.Height = (FLOAT)sd->Height;
	m_viewport.MinDepth = 0;
	m_viewport.MaxDepth = 1;
	m_viewport.TopLeftX = 0;
	m_viewport.TopLeftY = 0;