SwapChain.cpp

#include "SwapChain.h"

SwapChain::SwapChain(Renderer* renderer) : m_renderer(renderer)
{

}

bool SwapChain::Initialize(HWND hwnd, unsigned int width, unsigned int height, bool fullscreen)
{

	Microsoft::WRL::ComPtr<ID3D11Device> m_pDevice = m_renderer->GetDevice();
	DXGI_SWAP_CHAIN_DESC desc;
	memset(&desc, 0, sizeof(desc));
	desc.BufferCount = 2;
	desc.BufferDesc.Width = width;
	desc.BufferDesc.Height = height;
	desc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
	desc.BufferDesc.RefreshRate.Numerator = 144;
	desc.BufferDesc.RefreshRate.Denominator = 1;
	desc.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
	desc.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
	desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
	desc.OutputWindow = hwnd;
	desc.SampleDesc.Count = 4;
	desc.SampleDesc.Quality = 0;
	desc.Windowed = true;
	desc.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;

	__int64 hr = m_renderer->GetDXGIFactory()->CreateSwapChain(m_pDevice.Get(), &desc, &m_swapChain);

	if (hr < 0x0L)
	{
		return false;
	}
	ReloadBuffers(width, height);
	return true;
}

void SwapChain::Present(bool vsync)
{
	m_swapChain->Present(vsync, NULL);
}

ID3D11RenderTargetView* SwapChain::GetRenderTargetView() const
{
	return m_rtv.Get();
}

ID3D11DepthStencilView* SwapChain::GetDepthStencilView() const
{
	return m_dsv.Get();
}

void SwapChain::Release()
{
	SwapChain::~SwapChain();
	delete this;
}

void SwapChain::ReloadBuffers(unsigned int width, unsigned int height)
{
	Microsoft::WRL::ComPtr<ID3D11Texture2D> m_buffer = nullptr;
	auto hr = m_swapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (void**)&m_buffer);
	if (hr < 0x0L)
	{

	}

	hr = m_renderer->GetDevice()->CreateRenderTargetView(m_buffer.Get(), nullptr, &m_rtv);

	if (hr < 0x0L)
	{

	}

	D3D11_TEXTURE2D_DESC depthStencilDesc{};
	depthStencilDesc.Width = width;
	depthStencilDesc.Height = height;
	depthStencilDesc.MipLevels = 0x1U;
	depthStencilDesc.ArraySize = 0x1U;
	depthStencilDesc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;
	depthStencilDesc.SampleDesc.Count = 4;
	depthStencilDesc.SampleDesc.Quality = 0;
	depthStencilDesc.Usage = D3D11_USAGE_DEFAULT;
	depthStencilDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL;
	depthStencilDesc.CPUAccessFlags = 0;
	depthStencilDesc.MiscFlags = 0;

	hr = m_renderer->GetDevice()->CreateTexture2D(&depthStencilDesc, nullptr, &m_buffer);

	if (hr < 0x0L)
	{

	}

	hr = m_renderer->GetDevice()->CreateDepthStencilView(m_buffer.Get(), nullptr, &m_dsv);
	if (hr < 0x0L)
	{

	}

}

void SwapChain::Resize(unsigned int width, unsigned int height)
{
	m_dsv.Reset();
	m_rtv.Reset();
	m_swapChain->ResizeBuffers(2, width, height, DXGI_FORMAT_R8G8B8A8_UNORM, 0);
	ReloadBuffers(width, height);
}

void SwapChain::SetFullScreen(unsigned int width, unsigned int height, bool fullscreen)
{
	Resize(width, height);
	m_swapChain->SetFullscreenState(fullscreen, nullptr);
}

SwapChain::~SwapChain() = default;