#include <windows.h>
#include "Core/Window.h"

#include <d3d11.h>
#include <d3dx10.h>
#include <d3dx11.h>
#include <d3dCompiler.h>

#pragma comment(lib,"d3d11.lib")
#pragma comment(lib,"d3dx10.lib")
#pragma comment(lib,"d3dx11.lib")
#pragma comment(lib,"d3dCompiler.lib")

//マクロ
#define SAFE_RELEASE(x) if(x){x->Release(); x=NULL;}
#define WINDOW_WIDTH 640 //ウィンドウ幅
#define WINDOW_HEIGHT 480 //ウィンドウ高さ

using namespace NeneLabyrinth;

ID3D11Device* m_pDevice;
ID3D11DeviceContext* m_pDeviceContext;
IDXGISwapChain* m_pSwapChain;
ID3D11Texture2D* m_pBuckBuffer_DSTex;
ID3D11RenderTargetView* m_pBackBuffer_TexRTV;
ID3D11DepthStencilView* m_pBuckBuffer_DSTexDSV;

HRESULT InitializeDirectX(HWND _hWnd)
{
	// デバイスとスワップチェーンの作成
	DXGI_SWAP_CHAIN_DESC sd;
	ZeroMemory(&sd, sizeof(sd));
	sd.BufferCount = 1;
	sd.BufferDesc.Width = WINDOW_WIDTH;
	sd.BufferDesc.Height = WINDOW_HEIGHT;
	sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
	sd.BufferDesc.RefreshRate.Numerator = 60;
	sd.BufferDesc.RefreshRate.Denominator = 1;
	sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
	sd.OutputWindow = _hWnd;
	sd.SampleDesc.Count = 1;
	sd.SampleDesc.Quality = 0;
	sd.Windowed = TRUE;

	D3D_FEATURE_LEVEL pFeatureLevels = D3D_FEATURE_LEVEL_11_0;
	D3D_FEATURE_LEVEL* pFeatureLevel = NULL;

	if (FAILED(D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL,
		0, &pFeatureLevels, 1, D3D11_SDK_VERSION, &sd, &m_pSwapChain, &m_pDevice,
		pFeatureLevel, &m_pDeviceContext)))
	{
		return FALSE;
	}

	//バックバッファーテクスチャーを取得（既にあるので作成ではない）
	ID3D11Texture2D *pBackBuffer_Tex;
	m_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&pBackBuffer_Tex);
	//そのテクスチャーに対しレンダーターゲットビュー(RTV)を作成
	m_pDevice->CreateRenderTargetView(pBackBuffer_Tex, NULL, &m_pBackBuffer_TexRTV);
	SAFE_RELEASE(pBackBuffer_Tex);

	//デプスステンシルビュー用のテクスチャーを作成
	D3D11_TEXTURE2D_DESC descDepth;
	descDepth.Width = WINDOW_WIDTH;
	descDepth.Height = WINDOW_HEIGHT;
	descDepth.MipLevels = 1;
	descDepth.ArraySize = 1;
	descDepth.Format = DXGI_FORMAT_D32_FLOAT;
	descDepth.SampleDesc.Count = 1;
	descDepth.SampleDesc.Quality = 0;
	descDepth.Usage = D3D11_USAGE_DEFAULT;
	descDepth.BindFlags = D3D11_BIND_DEPTH_STENCIL;
	descDepth.CPUAccessFlags = 0;
	descDepth.MiscFlags = 0;
	m_pDevice->CreateTexture2D(&descDepth, NULL, &m_pBuckBuffer_DSTex);
	//そのテクスチャーに対しデプスステンシルビュー(DSV)を作成
	m_pDevice->CreateDepthStencilView(m_pBuckBuffer_DSTex, NULL, &m_pBuckBuffer_DSTexDSV);

	//レンダーターゲットビューとデプスステンシルビューをパイプラインにセット
	m_pDeviceContext->OMSetRenderTargets(1, &m_pBackBuffer_TexRTV, m_pBuckBuffer_DSTexDSV);

	//ビューポートの設定
	D3D11_VIEWPORT vp;
	vp.Width = WINDOW_WIDTH;
	vp.Height = WINDOW_HEIGHT;
	vp.MinDepth = 0.0f;
	vp.MaxDepth = 1.0f;
	vp.TopLeftX = 0;
	vp.TopLeftY = 0;
	m_pDeviceContext->RSSetViewports(1, &vp);

	//ラスタライズ設定
	D3D11_RASTERIZER_DESC rdc;
	ZeroMemory(&rdc, sizeof(rdc));
	rdc.CullMode = D3D11_CULL_NONE;
	rdc.FillMode = D3D11_FILL_SOLID;
	ID3D11RasterizerState* pIr = NULL;
	m_pDevice->CreateRasterizerState(&rdc, &pIr);
	m_pDeviceContext->RSSetState(pIr);

	return S_OK;
}
void ReleaseDirectXResource()
{
	SAFE_RELEASE(m_pSwapChain);
	SAFE_RELEASE(m_pBackBuffer_TexRTV);
	SAFE_RELEASE(m_pDeviceContext);
	SAFE_RELEASE(m_pBuckBuffer_DSTexDSV);
	SAFE_RELEASE(m_pBuckBuffer_DSTex);
	SAFE_RELEASE(m_pDevice);
}

void Rendering()
{
	//画面クリア
	float ClearColor[4] = { 0,0,0.5,1 };// クリア色　RGBAの順
	m_pDeviceContext->ClearRenderTargetView(m_pBackBuffer_TexRTV, ClearColor);//カラーバッファクリア
	m_pDeviceContext->ClearDepthStencilView(m_pBuckBuffer_DSTexDSV, D3D11_CLEAR_DEPTH, 1.0f, 0);//デプスステンシルバッファクリア

	m_pSwapChain->Present(0, 0);//画面更新（バックバッファをフロントバッファに）
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int)
{
	Core::Window window(
		hInstance,
		"NeneLabyrinth",
		"NeneLabyrinth",
		WINDOW_WIDTH,
		480);
	window.Create();

	InitializeDirectX(window);

	while (!window.IsReceiveQuitMessage())
	{
		Rendering();
	}

	ReleaseDirectXResource();
	return 0;
}