#include "stdafx.h"
#include "Renderer.h"

#include <NiDX9PersistentSrcTextureRendererData.h>

cRenderer::cRenderer()
: mTerrainEffect( 0 )
, mTrailEffect( 0 )
{
}

cRenderer::~cRenderer()
{
	/// ÀÌÆåÆ®¸¦ Á¦°Å
	if( mTerrainEffect )
		mTerrainEffect->Release();

	if( mTrailEffect )
		mTrailEffect->Release();
}

cRenderer* cRenderer::Create( unsigned int uiWidth, 
							 unsigned int uiHeight, unsigned int uiUseFlags, NiWindowRef kWndDevice, 
							 NiWindowRef kWndFocus, unsigned int uiAdapter, DeviceDesc eDesc, 
							 FrameBufferFormat eFBFormat, DepthStencilFormat eDSFormat, 
							 PresentationInterval ePresentationInterval, SwapEffect eSwapEffect, 
							 unsigned int uiFBMode, unsigned int uiBackBufferCount, 
							 unsigned int uiRefreshRate )
{
	// Create the Direct3D9 interface
	if( CreateDirect3D9() == -1)
	{
		SetLastErrorString("Creation failed: Could not initialize DirectX9");
		Error("cRenderer::Create> Invalid device ID specified "
			"- FAILING\n");
		return 0;
	}

	// Create an 'empty' instance of the renderer
	cRenderer* r = NiNew cRenderer;
	assert(r);

	ms_kD3DCriticalSection.Lock();

	bool bSuccess = r->Initialize( uiWidth, uiHeight, uiUseFlags, kWndDevice, 
		kWndFocus, uiAdapter, eDesc, eFBFormat, eDSFormat, 
		ePresentationInterval, eSwapEffect, uiFBMode, uiBackBufferCount, 
		uiRefreshRate );

	ms_kD3DCriticalSection.Unlock();

	if( bSuccess == false )
	{
		NiDelete r;
		r = 0;
	}
	else
	{
		// Registration of the DX9-specific
		// NiDX9PersistentSrcTextureRendererData::LoadBinary() that overrides
		// NiPersistentSrcTextureRendererData::LoadBinary();
		NiStream::UnregisterLoader( "NiPersistentSrcTextureRendererData" );
		NiStream::RegisterLoader( "NiPersistentSrcTextureRendererData", NiDX9PersistentSrcTextureRendererData::CreateObject );
	}

	return r;
}

bool cRenderer::Init()
{
	/// ÀÌÆåÆ®¸¦ »ý¼º
	if( CreateEffect( "Script/Resource/TerrainShader.fx", &mTerrainEffect ) == false || mTerrainEffect == 0 )
	{
		::MessageBoxA(NULL, "failed to create terrainshader.fx", "Error", MB_OK );
		return false;
	}

	if( CreateEffect( "Script/Resource/TrailShader.fx", &mTrailEffect ) == false || mTrailEffect == 0 )
	{
		::MessageBoxA(NULL, "failed to create TrailShader.fx", "Error", MB_OK );
		return false;
	}

	return true;
}

bool cRenderer::CreateEffect( const cString& pathName, LPD3DXEFFECT* effect )
{
	cFileLoader loader;

	if( loader.Open( pathName, true ) == false )
		return false;

	/// D3DXSHADER_ENABLE_BACKWARDS_COMPATIBILITY
	/// À§ Ç÷¡±×´Â ps_1_x¸¦ ´õÀÌ»ó Áö¿øÇÏÁö ¾Ê´Â dx¹öÁ¯À» À§ÇÑ Àç»ý Ç÷¡±×
	LPD3DXBUFFER error = 0;
#ifdef D3DXSHADER_ENABLE_BACKWARDS_COMPATIBILITY
	HRESULT hr = ::D3DXCreateEffect( m_pkD3DDevice9, loader.GetBufferPtr(), loader.GetSize(), 0, 0, D3DXSHADER_ENABLE_BACKWARDS_COMPATIBILITY, 0, effect, &error );
#else
	HRESULT hr = ::D3DXCreateEffect( m_pkD3DDevice9, loader.GetBufferPtr(), loader.GetSize(), 0, 0, 0, 0, effect, &error );
#endif

	if( FAILED(hr) )
	{
		const char* c = (const char*)error->GetBufferPointer();
		c;
		::MessageBoxA(NULL, c, "Error", MB_OK );
		assert( 0 );
	}
	if( error )
		error->Release();

	if( FAILED(hr) )
		return false;
	else
		return true;
}

LPDIRECT3DVERTEXBUFFER9 cRenderer::CreateVertexBuffer( unsigned int vertexCount, unsigned int vertexStride, const void* data )
{
	LPDIRECT3DVERTEXBUFFER9 vb = 0;
	unsigned int length = vertexCount * vertexStride;

	HRESULT ret = m_pkD3DDevice9->CreateVertexBuffer( length, D3DUSAGE_WRITEONLY, 0, D3DPOOL_MANAGED, &vb, 0 );

	if( FAILED(ret) || vb == 0 )
		return 0;

	/// »ý¼ºµÈ ¹öÆÛ¿¡ ³»¿ë º¹»ç
	if( data )
	{
		void* p = 0;
		HRESULT ret = vb->Lock( 0, length, &p, 0 );

		if( SUCCEEDED(ret) )
		{
			NiMemcpy( p, (const void*)data, length );
		}
		vb->Unlock();
	}
	return vb;
}

LPDIRECT3DINDEXBUFFER9 cRenderer::CreateIndexBuffer( unsigned int indexCount, const unsigned short* indexArray )
{
	assert( m_pkD3DDevice9 );

	LPDIRECT3DINDEXBUFFER9 ib = 0;
	unsigned int length = indexCount * sizeof(unsigned short);

	HRESULT ret = m_pkD3DDevice9->CreateIndexBuffer( length, 0, D3DFMT_INDEX16, D3DPOOL_MANAGED, &ib, 0 );

	if( FAILED(ret) || ib == 0 )
		return 0;

	/// »ý¼ºµÈ ¹öÆÛ¿¡ ³»¿ë º¹»ç
	if( indexArray )
	{
		void* p = 0;
		HRESULT ret = ib->Lock( 0, length, &p, 0 );

		if( SUCCEEDED(ret) )
		{
			NiMemcpy( p, (const void*)indexArray, length );
		}
		ib->Unlock();
	}
	return ib;
}

void cRenderer::OnLostDevice()
{
	mTerrainEffect->OnLostDevice();
	mTrailEffect->OnLostDevice();
}

void cRenderer::OnResetDevice()
{
	mTerrainEffect->OnResetDevice();
	mTrailEffect->OnResetDevice();
}