/*
---------------------------------------------------------------------------
Free Asset Import Library (ASSIMP)
---------------------------------------------------------------------------

Copyright (c) 2006-2008, ASSIMP Development Team

All rights reserved.

Redistribution and use of this software in source and binary forms, 
with or without modification, are permitted provided that the following 
conditions are met:

* Redistributions of source code must retain the above
  copyright notice, this list of conditions and the
  following disclaimer.

* Redistributions in binary form must reproduce the above
  copyright notice, this list of conditions and the
  following disclaimer in the documentation and/or other
  materials provided with the distribution.

* Neither the name of the ASSIMP team, nor the names of its
  contributors may be used to endorse or promote products
  derived from this software without specific prior
  written permission of the ASSIMP Development Team.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------------------
*/

#include "stdafx.h"
#include "assimp_view.h"


namespace AssimpView {


CDisplay CDisplay::s_cInstance;

extern COLORREF g_aclCustomColors[16] /*= {0}*/;
extern HKEY g_hRegistry;
extern float g_fLoadTime;

//-------------------------------------------------------------------------------
// Table of colors used for normal vectors. 
//-------------------------------------------------------------------------------
D3DXVECTOR4 g_aclNormalColors[14] = 
{
	D3DXVECTOR4(0xFF / 255.0f,0xFF / 255.0f,0xFF / 255.0f, 1.0f), // white

	D3DXVECTOR4(0xFF / 255.0f,0x00 / 255.0f,0x00 / 255.0f,1.0f), // red
	D3DXVECTOR4(0x00 / 255.0f,0xFF / 255.0f,0x00 / 255.0f,1.0f), // green
	D3DXVECTOR4(0x00 / 255.0f,0x00 / 255.0f,0xFF / 255.0f,1.0f), // blue

	D3DXVECTOR4(0xFF / 255.0f,0xFF / 255.0f,0x00 / 255.0f,1.0f), // yellow
	D3DXVECTOR4(0xFF / 255.0f,0x00 / 255.0f,0xFF / 255.0f,1.0f), // magenta
	D3DXVECTOR4(0x00 / 255.0f,0xFF / 255.0f,0xFF / 255.0f,1.0f), // wtf

	D3DXVECTOR4(0xFF / 255.0f,0x60 / 255.0f,0x60 / 255.0f,1.0f), // light red
	D3DXVECTOR4(0x60 / 255.0f,0xFF / 255.0f,0x60 / 255.0f,1.0f), // light green
	D3DXVECTOR4(0x60 / 255.0f,0x60 / 255.0f,0xFF / 255.0f,1.0f), // light blue

	D3DXVECTOR4(0xA0 / 255.0f,0x00 / 255.0f,0x00 / 255.0f,1.0f), // dark red
	D3DXVECTOR4(0x00 / 255.0f,0xA0 / 255.0f,0x00 / 255.0f,1.0f), // dark green
	D3DXVECTOR4(0x00 / 255.0f,0x00 / 255.0f,0xA0 / 255.0f,1.0f), // dark blue

	D3DXVECTOR4(0x88 / 255.0f,0x88 / 255.0f,0x88 / 255.0f, 1.0f) // gray
};


//-------------------------------------------------------------------------------
// Recursivly count the number of nodes in an asset's node graph
// Used by LoadAsset()
//-------------------------------------------------------------------------------
void GetNodeCount(aiNode* pcNode, unsigned int* piCnt)
{
	*piCnt = *piCnt+1;
	for (unsigned int i = 0; i < pcNode->mNumChildren;++i)
		GetNodeCount(pcNode->mChildren[i],piCnt);
}

//-------------------------------------------------------------------------------
int CDisplay::FillAnimList(void)
{
	if (0 == g_pcAsset->pcScene->mNumAnimations)
	{
		// disable all UI components related to animations
		EnableWindow(GetDlgItem(g_hDlg,IDC_PLAYANIM),FALSE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_SPEED),FALSE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_PINORDER),FALSE);

		EnableWindow(GetDlgItem(g_hDlg,IDC_SSPEED),FALSE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_SANIMGB),FALSE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_SANIM),FALSE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_COMBO1),FALSE);
	}
	else
	{
		// reenable all animation components if they have been
		// disabled for a previous mesh
		EnableWindow(GetDlgItem(g_hDlg,IDC_PLAYANIM),TRUE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_SPEED),TRUE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_PINORDER),TRUE);

		EnableWindow(GetDlgItem(g_hDlg,IDC_SSPEED),TRUE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_SANIMGB),TRUE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_SANIM),TRUE);
		EnableWindow(GetDlgItem(g_hDlg,IDC_COMBO1),TRUE);

		// now fill in all animation names
		for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumAnimations;++i)
		{
			SendDlgItemMessage(g_hDlg,IDC_COMBO1,CB_ADDSTRING,0,
				( LPARAM ) g_pcAsset->pcScene->mAnimations[i]->mName.data);
		}
	}
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::ClearAnimList(void)
{
	// clear the combo box
	SendDlgItemMessage(g_hDlg,IDC_COMBO1,CB_RESETCONTENT,0,0);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::ClearDisplayList(void)
{
	// clear the combo box
	TreeView_DeleteAllItems(GetDlgItem(g_hDlg,IDC_TREE1));
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::AddNodeToDisplayList(
	unsigned int iIndex, 
	unsigned int iDepth,
	aiNode* pcNode,
	HTREEITEM hRoot)
{
	ai_assert(NULL != pcNode);
	ai_assert(NULL != hRoot);

	char chTemp[512];

	if(0 == pcNode->mName.length)
	{
		if (iIndex >= 100)
		{
			iIndex += iDepth  * 1000;
		}
		else if (iIndex >= 10)
		{
			iIndex += iDepth  * 100;
		}
		else iIndex += iDepth  * 10;
		sprintf(chTemp,"Node %i",iIndex);
	}
	else strcpy(chTemp,pcNode->mName.data);

	TVITEMEX tvi; 
	TVINSERTSTRUCT sNew;
	tvi.pszText = chTemp;
	tvi.cchTextMax = (int)strlen(chTemp);
	tvi.mask = TVIF_TEXT | TVIF_SELECTEDIMAGE | TVIF_IMAGE | TVIF_HANDLE | TVIF_PARAM;
	tvi.iImage = this->m_aiImageList[AI_VIEW_IMGLIST_NODE];
	tvi.iSelectedImage = this->m_aiImageList[AI_VIEW_IMGLIST_NODE];
	tvi.lParam = (LPARAM)5; 

	sNew.itemex = tvi; 
	sNew.hInsertAfter = TVI_LAST; 
	sNew.hParent = hRoot;

	// add the item to the list
	HTREEITEM hTexture = (HTREEITEM)SendMessage(GetDlgItem(g_hDlg,IDC_TREE1), 
		TVM_INSERTITEM, 
		0,
		(LPARAM)(LPTVINSERTSTRUCT)&sNew);

	// recursively add all child nodes
	++iDepth;
	for (unsigned int i = 0; i< pcNode->mNumChildren;++i)
	{
		AddNodeToDisplayList(i,iDepth,pcNode->mChildren[i],hTexture);
	}

	// add the node to the list
	NodeInfo info;
	info.hTreeItem = hTexture;
	info.psNode = pcNode;
	this->AddNode(info);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::ReplaceCurrentTexture(const char* szPath)
{
	ai_assert(NULL != szPath);

	// well ... try to load it
	IDirect3DTexture9* piTexture = NULL;
	aiString szString;
	strcpy(szString.data,szPath);
	szString.length = strlen(szPath);
	CMaterialManager::Instance().LoadTexture(&piTexture,&szString);

	if (!piTexture)
	{
		CLogDisplay::Instance().AddEntry("[ERROR] Unable to load this texture",
			D3DCOLOR_ARGB(0xFF,0xFF,0x0,0x0));
		return 0;
	}

	// we must also change the icon of the corresponding tree
	// view item if the default texture was previously set
	TVITEMEX tvi; 
	tvi.mask = TVIF_SELECTEDIMAGE | TVIF_IMAGE;
	tvi.iImage = this->m_aiImageList[AI_VIEW_IMGLIST_MATERIAL];
	tvi.iSelectedImage = this->m_aiImageList[AI_VIEW_IMGLIST_MATERIAL];

	TreeView_SetItem(GetDlgItem(g_hDlg,IDC_TREE1),
		this->m_pcCurrentTexture->hTreeItem);

	// change this in the old aiMaterial structure, too
	Assimp::MaterialHelper* pcMat = (Assimp::MaterialHelper*)
		g_pcAsset->pcScene->mMaterials[this->m_pcCurrentTexture->iMatIndex];
 	
	// update all meshes referencing this material
	this->m_pcCurrentTexture->piTexture = piTexture;
	for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMeshes;++i)
	{
		if (this->m_pcCurrentTexture->iMatIndex != g_pcAsset->pcScene->mMeshes[i]->mMaterialIndex)
			continue;

		AssetHelper::MeshHelper* pcMesh = g_pcAsset->apcMeshes[i];
		switch (this->m_pcCurrentTexture->iType)
		{
		case AI_TEXTYPE_DIFFUSE:
			if (pcMesh->piDiffuseTexture && pcMesh->piDiffuseTexture != piTexture)
			{
				pcMesh->piDiffuseTexture->Release();
				pcMesh->piDiffuseTexture = piTexture;

				if (!pcMesh->bSharedFX)
				{
					pcMesh->piEffect->SetTexture("DIFFUSE_TEXTURE",piTexture);
				}
			}
			break;
		case AI_TEXTYPE_AMBIENT:
			if (pcMesh->piAmbientTexture && pcMesh->piAmbientTexture != piTexture)
			{
				pcMesh->piAmbientTexture->Release();
				pcMesh->piAmbientTexture = piTexture;

				if (!pcMesh->bSharedFX)
				{
					pcMesh->piEffect->SetTexture("AMBIENT_TEXTURE",piTexture);
				}
			}
			break;
		case AI_TEXTYPE_SPECULAR:
			if (pcMesh->piSpecularTexture && pcMesh->piSpecularTexture != piTexture)
			{
				pcMesh->piSpecularTexture->Release();
				pcMesh->piSpecularTexture = piTexture;

				if (!pcMesh->bSharedFX)
				{
					pcMesh->piEffect->SetTexture("SPECULAR_TEXTURE",piTexture);
				}
			}
			break;
		case AI_TEXTYPE_EMISSIVE:
			if (pcMesh->piEmissiveTexture && pcMesh->piEmissiveTexture != piTexture)
			{
				pcMesh->piEmissiveTexture->Release();
				pcMesh->piEmissiveTexture = piTexture;

				if (!pcMesh->bSharedFX)
				{
					pcMesh->piEffect->SetTexture("EMISSIVE_TEXTURE",piTexture);
				}
			}
			break;
		case AI_TEXTYPE_SHININESS:
			if (pcMesh->piShininessTexture && pcMesh->piShininessTexture != piTexture)
			{
				pcMesh->piShininessTexture->Release();
				pcMesh->piShininessTexture = piTexture;

				if (!pcMesh->bSharedFX)
				{
					pcMesh->piEffect->SetTexture("SHININESS_TEXTURE",piTexture);
				}
			}
			break;
		case AI_TEXTYPE_NORMALS:
		case AI_TEXTYPE_HEIGHT:
			if (pcMesh->piNormalTexture && pcMesh->piNormalTexture != piTexture)
			{
				pcMesh->piNormalTexture->Release();
				pcMesh->piNormalTexture = piTexture;

				if (!pcMesh->bSharedFX)
				{
					pcMesh->piEffect->SetTexture("NORMAL_TEXTURE",piTexture);
				}
			}
			break;
		default: //case AI_TEXTYPE_OPACITY && case AI_TEXTYPE_OPACITY | 0x40000000:
			if (pcMesh->piOpacityTexture && pcMesh->piOpacityTexture != piTexture)
			{
				pcMesh->piOpacityTexture->Release();
				pcMesh->piOpacityTexture = piTexture;

				if (!pcMesh->bSharedFX)
				{
					pcMesh->piEffect->SetTexture("OPACITY_TEXTURE",piTexture);
				}
			}
			break;
		};
	}

	// now update the material itself
	aiString szOld;
	const char* szKey = NULL;
	switch (this->m_pcCurrentTexture->iType)
	{
	case AI_TEXTYPE_DIFFUSE:
		szKey = AI_MATKEY_TEXTURE_DIFFUSE(0);
		break;
	case AI_TEXTYPE_AMBIENT:
		szKey = AI_MATKEY_TEXTURE_AMBIENT(0);
		break;
	case AI_TEXTYPE_SPECULAR:
		szKey = AI_MATKEY_TEXTURE_SPECULAR(0);
		break;
	case AI_TEXTYPE_EMISSIVE:
		szKey = AI_MATKEY_TEXTURE_EMISSIVE(0);
		break;
	case AI_TEXTYPE_NORMALS:
		szKey = AI_MATKEY_TEXTURE_NORMALS(0);
		break;
	case AI_TEXTYPE_HEIGHT:
		szKey = AI_MATKEY_TEXTURE_HEIGHT(0);
		break;
	case AI_TEXTYPE_SHININESS:
		szKey = AI_MATKEY_TEXTURE_SHININESS(0);
		break;
	default: //case AI_TEXTYPE_OPACITY && case AI_TEXTYPE_OPACITY | 0x40000000:
		szKey = AI_MATKEY_TEXTURE_OPACITY(0);
		break;
	};
	ai_assert(NULL != szKey);

	aiGetMaterialString(pcMat,szKey,&szOld);
	pcMat->AddProperty(&szString,szKey);

	char szBuffer[512];
	sprintf(szBuffer,"%s%s",szKey,"_old");

	if (AI_SUCCESS != aiGetMaterialString(pcMat, szBuffer, &szOld))
	{
		pcMat->AddProperty(&szOld,szBuffer );
	}
	else if (szString.length == szOld.length && 
		0 == Assimp::ASSIMP_stricmp(szString.data,szOld.data))
	{
		pcMat->RemoveProperty(szBuffer);
	}
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::AddTextureToDisplayList(unsigned int iType,
	unsigned int iIndex,
	const aiString* szPath,
	HTREEITEM hFX, 
	unsigned int iUVIndex		/*= 0*/,
	const float fBlendFactor	/*= 0.0f*/,
	aiTextureOp eTextureOp		/*= aiTextureOp_Multiply*/,
	unsigned int iMesh		/*= 0*/)
{
	ai_assert(NULL != szPath);
	ai_assert(NULL != pcMat);

	char chTemp[512];
	char chTempEmb[256];
	const char* sz = strrchr(szPath->data,'\\');
	if (!sz)sz = strrchr(szPath->data,'/');
	if (!sz)
	{
		if ('*' == *szPath->data)
		{
			int iIndex = atoi(szPath->data+1);
			sprintf(chTempEmb,"Embedded #%i",iIndex);
			sz = chTempEmb;
		}
		else
		{
			sz = szPath->data;
		}
	}

	bool bIsExtraOpacity = 0 != (iType & 0x40000000);
	const char* szType;
	IDirect3DTexture9* piTexture;
	switch (iType)
	{
	case AI_TEXTYPE_DIFFUSE:
		piTexture = g_pcAsset->apcMeshes[iMesh]->piDiffuseTexture;
		szType = "Diffuse";break;
	case AI_TEXTYPE_SPECULAR:
		piTexture = g_pcAsset->apcMeshes[iMesh]->piSpecularTexture;
		szType = "Specular";break;
	case AI_TEXTYPE_AMBIENT:
		piTexture = g_pcAsset->apcMeshes[iMesh]->piAmbientTexture;
		szType = "Ambient";break;
	case AI_TEXTYPE_EMISSIVE:
		piTexture = g_pcAsset->apcMeshes[iMesh]->piEmissiveTexture;
		szType = "Emissive";break;
	case AI_TEXTYPE_HEIGHT:
		piTexture = g_pcAsset->apcMeshes[iMesh]->piNormalTexture;
		szType = "HeightMap";break;
	case AI_TEXTYPE_NORMALS:
		piTexture = g_pcAsset->apcMeshes[iMesh]->piNormalTexture;
		szType = "NormalMap";break;
	case AI_TEXTYPE_SHININESS:
		piTexture = g_pcAsset->apcMeshes[iMesh]->piShininessTexture;
		szType = "Shininess";break;
	default: // opacity + opacity | mask
		piTexture = g_pcAsset->apcMeshes[iMesh]->piOpacityTexture;
		szType = "Opacity";break;
	};
	if (bIsExtraOpacity)
	{
		sprintf(chTemp,"%s %i (<copy of diffuse #1>)",szType,iIndex+1);
	}
	else sprintf(chTemp,"%s %i (%s)",szType,iIndex+1,sz);

	TVITEMEX tvi; 
	TVINSERTSTRUCT sNew;
	tvi.pszText = chTemp;
	tvi.cchTextMax = (int)strlen(chTemp);
	tvi.mask = TVIF_TEXT | TVIF_SELECTEDIMAGE | TVIF_IMAGE | TVIF_HANDLE | TVIF_HANDLE;
	tvi.lParam = (LPARAM)20;

	// find out whether this is the default texture or not

	if (piTexture)
	{
		// {9785DA94-1D96-426b-B3CB-BADC36347F5E}
		static const GUID guidPrivateData = 
			{ 0x9785da94, 0x1d96, 0x426b, 
			{ 0xb3, 0xcb, 0xba, 0xdc, 0x36, 0x34, 0x7f, 0x5e } };

		uint32_t iData = 0;
		DWORD dwSize = 4;
		piTexture->GetPrivateData(guidPrivateData,&iData,&dwSize);

		if (0xFFFFFFFF == iData)
		{
			tvi.iImage = this->m_aiImageList[AI_VIEW_IMGLIST_TEXTURE_INVALID];
			tvi.iSelectedImage = this->m_aiImageList[AI_VIEW_IMGLIST_TEXTURE_INVALID];
		}
		else
		{
			tvi.iImage = this->m_aiImageList[AI_VIEW_IMGLIST_TEXTURE];
			tvi.iSelectedImage = this->m_aiImageList[AI_VIEW_IMGLIST_TEXTURE];
		}
	}
	else
	{
		tvi.iImage = this->m_aiImageList[AI_VIEW_IMGLIST_TEXTURE_INVALID];
		tvi.iSelectedImage = this->m_aiImageList[AI_VIEW_IMGLIST_TEXTURE_INVALID];
	}

	sNew.itemex = tvi; 
	sNew.hInsertAfter = TVI_LAST; 
	sNew.hParent = hFX;

	// add the item to the list
	HTREEITEM hTexture = (HTREEITEM)SendMessage(GetDlgItem(g_hDlg,IDC_TREE1), 
		TVM_INSERTITEM, 
		0,
		(LPARAM)(LPTVINSERTSTRUCT)&sNew);

	// add it to the list
	CDisplay::TextureInfo sInfo;
	sInfo.iUV = iUVIndex;
	sInfo.fBlend = fBlendFactor;
	sInfo.eOp = eTextureOp;
	sInfo.szPath = szPath->data;
	sInfo.hTreeItem = hTexture;
	sInfo.piTexture = piTexture;
	sInfo.iType = iType;
	sInfo.iMatIndex = g_pcAsset->pcScene->mMeshes[iMesh]->mMaterialIndex;
	this->AddTexture(sInfo);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::AddMaterialToDisplayList(HTREEITEM hRoot, 
	unsigned int iIndex)
{
	ai_assert(NULL != hRoot);

	aiMaterial* pcMat = g_pcAsset->pcScene->mMaterials[iIndex];

	
	// find the first mesh using this material index
	unsigned int iMesh = 0;
	for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMeshes;++i)
	{
		if (iIndex == g_pcAsset->pcScene->mMeshes[i]->mMaterialIndex)
		{
			iMesh = i;
			break;
		}
	}

	// use the name of the material, if possible
	char chTemp[512];
	aiString szOut;
	if (AI_SUCCESS != aiGetMaterialString(pcMat,AI_MATKEY_NAME,&szOut))
	{
		sprintf(chTemp,"Material %i",iIndex+1);
	}
	else
	{
		sprintf(chTemp,"%s (%i)",szOut.data,iIndex+1);
	}
	TVITEMEX tvi; 
	TVINSERTSTRUCT sNew;
	tvi.pszText = chTemp;
	tvi.cchTextMax = (int)strlen(chTemp);
	tvi.mask = TVIF_TEXT | TVIF_SELECTEDIMAGE | TVIF_IMAGE | TVIF_HANDLE | TVIF_PARAM ;
	tvi.iImage = this->m_aiImageList[AI_VIEW_IMGLIST_MATERIAL];
	tvi.iSelectedImage = this->m_aiImageList[AI_VIEW_IMGLIST_MATERIAL];
	tvi.lParam = (LPARAM)10; 
	//tvi.state = TVIS_EXPANDED | TVIS_EXPANDEDONCE ;

	sNew.itemex = tvi; 
	sNew.hInsertAfter = TVI_LAST; 
	sNew.hParent = hRoot;

	// add the item to the list
	HTREEITEM hTexture = (HTREEITEM)SendMessage(GetDlgItem(g_hDlg,IDC_TREE1), 
		TVM_INSERTITEM, 
		0,
		(LPARAM)(LPTVINSERTSTRUCT)&sNew);

	// for each texture in the list ... add it
	// NOTE: This expects that AI_TEXTYPE_DIFFUSE is 7
	ai_assert(7 == AI_TEXTYPE_DIFFUSE);
	unsigned int iUV;
	float fBlend;
	aiTextureOp eOp;
	aiString szPath;
	bool bNoOpacity = true;
	for (unsigned int i = 0; i < 8;++i)
	{
		unsigned int iNum = 0;
		while (true)
		{
			if (AI_SUCCESS != aiGetMaterialTexture(pcMat,iNum,i,
				&szPath,&iUV,&fBlend,&eOp))
			{
				break;
			}
			if (AI_TEXTYPE_OPACITY == i)bNoOpacity = false;
			AddTextureToDisplayList(i,iNum,&szPath,hTexture,iUV,fBlend,eOp,iMesh);
			++iNum;
		}
	}

	AssetHelper::MeshHelper* pcMesh = g_pcAsset->apcMeshes[iIndex];
	if (pcMesh->piDiffuseTexture && pcMesh->piDiffuseTexture == pcMesh->piOpacityTexture && bNoOpacity)
	{
		// seems the diffuse texture contains alpha, therefore it has been
		// added to the opacity channel, too. Add a special value ...
		AddTextureToDisplayList(AI_TEXTYPE_OPACITY | 0x40000000,
			0,&szPath,hTexture,iUV,fBlend,eOp,iMesh);
	}

	// add the material to the list
	MaterialInfo info;
	info.hTreeItem = hTexture;
	info.psMaterial = pcMat;
	info.iIndex = iIndex;
	info.piEffect = g_pcAsset->apcMeshes[iMesh]->piEffect;
	this->AddMaterial(info);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::ExpandTree()
{
	// expand all materials
	for (std::vector< MaterialInfo >::iterator
		i =  this->m_asMaterials.begin();
		i != this->m_asMaterials.end();++i)
	{
		TreeView_Expand(GetDlgItem(g_hDlg,IDC_TREE1),(*i).hTreeItem,TVE_EXPAND);
	}
	// expand all nodes
	for (std::vector< NodeInfo >::iterator
		i =  this->m_asNodes.begin();
		i != this->m_asNodes.end();++i)
	{
		TreeView_Expand(GetDlgItem(g_hDlg,IDC_TREE1),(*i).hTreeItem,TVE_EXPAND);
	}
	TreeView_Expand(GetDlgItem(g_hDlg,IDC_TREE1),this->m_hRoot,TVE_EXPAND);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::LoadImageList(void)
{
	if (!this->m_hImageList)
	{
		// First, create the image list we will need.
		// FIX: Need RGB888 color space to display all colors correctly
		HIMAGELIST hIml = ImageList_Create( 16,16,ILC_COLOR24, 5, 0 );

		// Load the bitmaps and add them to the image lists.
		HBITMAP hBmp = LoadBitmap(g_hInstance, MAKEINTRESOURCE(IDB_BFX));
		this->m_aiImageList[AI_VIEW_IMGLIST_MATERIAL] = ImageList_Add(hIml, hBmp, NULL);
		DeleteObject(hBmp);

		hBmp = LoadBitmap(g_hInstance, MAKEINTRESOURCE(IDB_BNODE));
		this->m_aiImageList[AI_VIEW_IMGLIST_NODE] = ImageList_Add(hIml, hBmp, NULL);
		DeleteObject(hBmp);

		hBmp = LoadBitmap(g_hInstance, MAKEINTRESOURCE(IDB_BTX));
		this->m_aiImageList[AI_VIEW_IMGLIST_TEXTURE] = ImageList_Add(hIml, hBmp, NULL);
		DeleteObject(hBmp);

		hBmp = LoadBitmap(g_hInstance, MAKEINTRESOURCE(IDB_BTXI));
		this->m_aiImageList[AI_VIEW_IMGLIST_TEXTURE_INVALID] = ImageList_Add(hIml, hBmp, NULL);
		DeleteObject(hBmp);

		hBmp = LoadBitmap(g_hInstance, MAKEINTRESOURCE(IDB_BROOT));
		this->m_aiImageList[AI_VIEW_IMGLIST_MODEL] = ImageList_Add(hIml, hBmp, NULL);
		DeleteObject(hBmp);

		// Associate the image list with the tree.
		TreeView_SetImageList(GetDlgItem(g_hDlg,IDC_TREE1), hIml, TVSIL_NORMAL);

		this->m_hImageList = hIml;
	}
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::FillDisplayList(void)
{
	this->LoadImageList();

	// Initialize the tree view window.
	// fill in the first entry
	TVITEMEX tvi; 
	TVINSERTSTRUCT sNew;
	tvi.pszText = "Model";
	tvi.cchTextMax = (int)strlen(tvi.pszText);
	tvi.mask = TVIF_TEXT | TVIF_SELECTEDIMAGE | TVIF_IMAGE | TVIF_HANDLE | TVIF_STATE;
	tvi.state = TVIS_EXPANDED;
	tvi.iImage = this->m_aiImageList[AI_VIEW_IMGLIST_MODEL];
	tvi.iSelectedImage = this->m_aiImageList[AI_VIEW_IMGLIST_MODEL];
	tvi.lParam = (LPARAM)0; 

	sNew.itemex = tvi; 
	sNew.hInsertAfter = TVI_ROOT; 
	sNew.hParent = 0;

	// add the root item to the tree
	this->m_hRoot = (HTREEITEM)SendMessage(GetDlgItem(g_hDlg,IDC_TREE1), 
		TVM_INSERTITEM, 
		0,
		(LPARAM)(LPTVINSERTSTRUCT)&sNew);

	// add each loaded material to the tree
	for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMaterials;++i)
	{
		AddMaterialToDisplayList(this->m_hRoot,i);
	}

	// now add all loaded nodes recursively
	AddNodeToDisplayList(0,0,g_pcAsset->pcScene->mRootNode,this->m_hRoot);

	// now expand all parent nodes in the tree
	this->ExpandTree();

	// everything reacts a little bit slowly if D3D is rendering,
	// so give GDI a small hint to leave the couch and work ;-)
	UpdateWindow(g_hDlg);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::OnRender()
{
	// begin the frame
	g_piDevice->BeginScene();

	switch (this->m_iViewMode)
	{
	case VIEWMODE_FULL:
	case VIEWMODE_NODE:
		this->RenderFullScene();
		break;
	case VIEWMODE_MATERIAL:
		this->RenderMaterialView();
		break;
	case VIEWMODE_TEXTURE:
		this->RenderTextureView();
		break;
	};

	// Now render the log display in the upper right corner of the window
	CLogDisplay::Instance().OnRender();

	// present the backbuffer
	g_piDevice->EndScene();
	g_piDevice->Present(NULL,NULL,NULL,NULL);

	// don't remove this, problems on some older machines (AMD timing bug)
	Sleep(10);
	return 1;
}	
//-------------------------------------------------------------------------------
int CDisplay::FillDefaultStatistics(void)
{
	// get the number of vertices/faces in the model
	unsigned int iNumVert = 0;
	unsigned int iNumFaces = 0;
	for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMeshes;++i)
	{
		iNumVert += g_pcAsset->pcScene->mMeshes[i]->mNumVertices;
		iNumFaces += g_pcAsset->pcScene->mMeshes[i]->mNumFaces;
	}
	// and fill the statistic edit controls
	char szOut[1024];
	sprintf(szOut,"%i",(int)iNumVert);
	SetDlgItemText(g_hDlg,IDC_EVERT,szOut);
	sprintf(szOut,"%i",(int)iNumFaces);
	SetDlgItemText(g_hDlg,IDC_EFACE,szOut);
	sprintf(szOut,"%i",(int)g_pcAsset->pcScene->mNumMaterials);
	SetDlgItemText(g_hDlg,IDC_EMAT,szOut);
	sprintf(szOut,"%i",(int)g_pcAsset->pcScene->mNumMeshes);
	SetDlgItemText(g_hDlg,IDC_EMESH,szOut);

	// need to get the number of nodes
	iNumVert = 0;
	GetNodeCount(g_pcAsset->pcScene->mRootNode,&iNumVert);
	sprintf(szOut,"%i",(int)iNumVert);
	SetDlgItemText(g_hDlg,IDC_ENODEWND,szOut);

	// now get the number of unique shaders generated for the asset
	// (even if the environment changes this number won't change)
	sprintf(szOut,"%i", CMaterialManager::Instance().GetShaderCount());
	SetDlgItemText(g_hDlg,IDC_ESHADER,szOut);

	sprintf(szOut,"%.5f",(float)g_fLoadTime);
	SetDlgItemText(g_hDlg,IDC_ELOAD,szOut);

	UpdateWindow(g_hDlg);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::Reset(void)
{
	// clear all lists
	this->m_asMaterials.clear();
	this->m_asTextures.clear();
	this->m_asNodes.clear();

	this->m_hRoot = NULL;

	return this->OnSetupNormalView();
}
//-------------------------------------------------------------------------------
int CDisplay::OnSetupNormalView()
{
	// now ... change the meaning of the statistics fields back
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMVERTS),"Verts:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMNODES),"Nodes:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMFACES),"Faces:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMSHADERS),"Shd:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMMATS),"Mats:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMMESHES),"Mesh:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_LOADTIME),"Time:");

	this->FillDefaultStatistics();
	this->SetViewMode(VIEWMODE_FULL);

	// for debugging
	this->m_pcCurrentMaterial = NULL;
	this->m_pcCurrentTexture = NULL;
	this->m_pcCurrentNode = NULL;

	UpdateWindow(g_hDlg);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::OnSetupNodeView(NodeInfo* pcNew)
{
	ai_assert(NULL != pcNew);

	if (this->m_pcCurrentNode == pcNew)return 2;

	this->m_pcCurrentNode = pcNew;
	this->SetViewMode(VIEWMODE_NODE);

	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::OnSetupMaterialView(MaterialInfo* pcNew)
{
	ai_assert(NULL != pcNew);

	if (this->m_pcCurrentMaterial == pcNew)return 2;

	this->m_pcCurrentMaterial = pcNew;
	this->SetViewMode(VIEWMODE_MATERIAL);

	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::OnSetupTextureView(TextureInfo* pcNew)
{
	ai_assert(NULL != pcNew);

	if (this->m_pcCurrentTexture == pcNew)return 2;
	if ((AI_TEXTYPE_OPACITY | 0x40000000) == pcNew->iType)
	{
		// for opacity textures display a warn message
		CLogDisplay::Instance().AddEntry("[INFO] This texture is not existing in the "
			"original mesh",D3DCOLOR_ARGB(0xFF,0xFF,0xFF,0));
		CLogDisplay::Instance().AddEntry("It is a copy of the alpha channel of the first "
			"diffuse texture",D3DCOLOR_ARGB(0xFF,0xFF,0xFF,0));
	}

	this->m_fTextureZoom = 1000.0f;
	this->m_vTextureOffset.x = this->m_vTextureOffset.y = 0.0f;

	this->m_pcCurrentTexture = pcNew;
	this->SetViewMode(VIEWMODE_TEXTURE);

	// now ... change the meaning of the statistics fields
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMVERTS),"Width:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMNODES),"Height:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMFACES),"Format:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMSHADERS),"MIPs:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMMATS),"UV:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_NUMMESHES),"Blend:");
	SetWindowText(GetDlgItem(g_hDlg,IDC_LOADTIME),"Op:");

	// and fill them with data
	D3DSURFACE_DESC sDesc;
	pcNew->piTexture->GetLevelDesc(0,&sDesc);
	char szTemp[128];

	sprintf(szTemp,"%i",sDesc.Width);
	SetWindowText(GetDlgItem(g_hDlg,IDC_EVERT),szTemp);

	sprintf(szTemp,"%i",sDesc.Height);
	SetWindowText(GetDlgItem(g_hDlg,IDC_ENODEWND),szTemp);

	sprintf(szTemp,"%i",pcNew->piTexture->GetLevelCount());
	SetWindowText(GetDlgItem(g_hDlg,IDC_ESHADER),szTemp);

	sprintf(szTemp,"%i",pcNew->iUV);
	SetWindowText(GetDlgItem(g_hDlg,IDC_EMAT),szTemp);

	sprintf(szTemp,"%f",pcNew->fBlend);
	SetWindowText(GetDlgItem(g_hDlg,IDC_EMESH),szTemp);

	const char* szOp;
	switch (pcNew->eOp)
	{
	case aiTextureOp_Add:
		szOp = "add";break;
	case aiTextureOp_Subtract:
		szOp = "sub";break;
	case aiTextureOp_Divide:
		szOp = "div";break;
	case aiTextureOp_SignedAdd:
		szOp = "addsign";break;
	case aiTextureOp_SmoothAdd:
		szOp = "addsmooth";break;
	default: szOp = "mul";
	};
	SetWindowText(GetDlgItem(g_hDlg,IDC_ELOAD),szOp);

	// NOTE: Format is always ARGB8888 since other formats are
	// convert to this format ...
	SetWindowText(GetDlgItem(g_hDlg,IDC_EFACE),"ARGB8");

	// check whether this is the default texture
	if (pcNew->piTexture)
	{
		// {9785DA94-1D96-426b-B3CB-BADC36347F5E}
		static const GUID guidPrivateData = 
		{ 0x9785da94, 0x1d96, 0x426b, 
		{ 0xb3, 0xcb, 0xba, 0xdc, 0x36, 0x34, 0x7f, 0x5e } };

		uint32_t iData = 0;
		DWORD dwSize = 4;
		pcNew->piTexture->GetPrivateData(guidPrivateData,&iData,&dwSize);

		if (0xFFFFFFFF == iData)
		{
			CLogDisplay::Instance().AddEntry("[ERROR] Texture could not be loaded. "
				"The displayed texture is a default texture",
				D3DCOLOR_ARGB(0xFF,0xFF,0,0));
			return 0;
		}
	}
	UpdateWindow(g_hDlg);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::OnSetup(HTREEITEM p_hTreeItem)
{
	// search in our list for the item

	union	{
		TextureInfo* pcNew;
		NodeInfo* pcNew2;
		MaterialInfo* pcNew3;	};

	pcNew = NULL;
	for (std::vector<TextureInfo>::iterator
		i =  this->m_asTextures.begin();
		i != this->m_asTextures.end();++i)
	{
		if (p_hTreeItem == (*i).hTreeItem)
		{
			pcNew = &(*i);
			break;
		}
	}
	if (pcNew)
	{
		return this->OnSetupTextureView(pcNew);
	}

	// seach the node list
	for (std::vector<NodeInfo>::iterator
		i =  this->m_asNodes.begin();
		i != this->m_asNodes.end();++i)
	{
		if (p_hTreeItem == (*i).hTreeItem)
		{
			pcNew2 = &(*i);
			break;
		}
	}
	if (pcNew2)
	{
		return this->OnSetupNodeView(pcNew2);
	}

	// seach the material list
	for (std::vector<MaterialInfo>::iterator
		i =  this->m_asMaterials.begin();
		i != this->m_asMaterials.end();++i)
	{
		if (p_hTreeItem == (*i).hTreeItem)
		{
			pcNew3 = &(*i);
			break;
		}
	}
	if (pcNew3)
	{
		return this->OnSetupMaterialView(pcNew3);
	}
	return this->OnSetupNormalView();
}
//-------------------------------------------------------------------------------
int CDisplay::ShowTreeViewContextMenu(HTREEITEM hItem)
{
	ai_assert(NULL != hItem);

	HMENU hDisplay = NULL;

	// search in our list for the item
	TextureInfo* pcNew = NULL;
	for (std::vector<TextureInfo>::iterator
		i =  this->m_asTextures.begin();
		i != this->m_asTextures.end();++i)
	{
		if (hItem == (*i).hTreeItem)
		{
			pcNew = &(*i);
			break;
		}
	}
	if (pcNew)
	{
		HMENU hMenu = LoadMenu(g_hInstance,MAKEINTRESOURCE(IDR_TXPOPUP));
		hDisplay = GetSubMenu(hMenu,0);

		//this->OnSetupTextureView(pcNew);
	}

	// search in the material list for the item
	MaterialInfo* pcNew2 = NULL;
	for (std::vector<MaterialInfo>::iterator
		i =  this->m_asMaterials.begin();
		i != this->m_asMaterials.end();++i)
	{
		if (hItem == (*i).hTreeItem)
		{
			pcNew2 = &(*i);
			break;
		}
	}
	if (pcNew2)
	{
		HMENU hMenu = LoadMenu(g_hInstance,MAKEINTRESOURCE(IDR_MATPOPUP));
		hDisplay = GetSubMenu(hMenu,0);

		//this->OnSetupMaterialView(pcNew2);
	}
	if (NULL != hDisplay)
	{
		// select this entry (this should all OnSetup())
		TreeView_Select(GetDlgItem(g_hDlg,IDC_TREE1),hItem,TVGN_CARET);

		// FIX: Render the scene once that the correct texture/material
		// is displayed while the context menu is active
		this->OnRender();

		POINT sPoint;
		GetCursorPos(&sPoint);
		TrackPopupMenu(hDisplay, TPM_LEFTALIGN, sPoint.x, sPoint.y, 0,
			g_hDlg,NULL);
	}
	return 1;
}
//-------------------------------------------------------------------------------
template <class type, class intype>
type clamp(intype in)
{
	// for unsigned types only ...
	intype mask = (0x1u << (sizeof(type)*8))-1;
	return (type)std::max((intype)0,std::min(in,mask));
}
//-------------------------------------------------------------------------------
int CDisplay::HandleTreeViewPopup(WPARAM wParam,LPARAM lParam)
{
	// helper class
	struct Info
	{
		Info(	D3DXVECTOR4* p1,
				AssetHelper::MeshHelper* p2,
				const char* p3)
				: pclrColor(p1),pMesh(p2),szShaderParam(p3) {}

		D3DXVECTOR4* pclrColor;
		AssetHelper::MeshHelper* pMesh;
		const char* szShaderParam;
	};

	// get the current selected material
	std::vector<Info> apclrOut;
	const char* szMatKey;

	switch (LOWORD(wParam))
	{
	case ID_SOLONG_CLEARDIFFUSECOLOR:
		for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMeshes;++i)
		{
			if (this->m_pcCurrentMaterial->iIndex == g_pcAsset->pcScene->mMeshes[i]->mMaterialIndex)
			{
				apclrOut.push_back( Info( &g_pcAsset->apcMeshes[i]->vDiffuseColor,
					g_pcAsset->apcMeshes[i],"DIFFUSE_COLOR"));
			}
		}
		szMatKey = AI_MATKEY_COLOR_DIFFUSE;
		break;
	case ID_SOLONG_CLEARSPECULARCOLOR:
		for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMeshes;++i)
		{
			if (this->m_pcCurrentMaterial->iIndex == g_pcAsset->pcScene->mMeshes[i]->mMaterialIndex)
			{
				apclrOut.push_back( Info( &g_pcAsset->apcMeshes[i]->vSpecularColor,
					g_pcAsset->apcMeshes[i],"SPECULAR_COLOR"));
			}
		}
		szMatKey = AI_MATKEY_COLOR_SPECULAR;
		break;
	case ID_SOLONG_CLEARAMBIENTCOLOR:
		for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMeshes;++i)
		{
			if (this->m_pcCurrentMaterial->iIndex == g_pcAsset->pcScene->mMeshes[i]->mMaterialIndex)
			{
				apclrOut.push_back( Info( &g_pcAsset->apcMeshes[i]->vAmbientColor,
					g_pcAsset->apcMeshes[i],"AMBIENT_COLOR"));
			}
		}
		szMatKey = AI_MATKEY_COLOR_AMBIENT;
		break;
	case ID_SOLONG_CLEAREMISSIVECOLOR:
		for (unsigned int i = 0; i < g_pcAsset->pcScene->mNumMeshes;++i)
		{
			if (this->m_pcCurrentMaterial->iIndex == g_pcAsset->pcScene->mMeshes[i]->mMaterialIndex)
			{
				apclrOut.push_back( Info( &g_pcAsset->apcMeshes[i]->vEmissiveColor,
					g_pcAsset->apcMeshes[i],"EMISSIVE_COLOR"));
			}
		}
		szMatKey = AI_MATKEY_COLOR_EMISSIVE;
		break;
	default:

		// let the next function do this ... no spaghetti code ;-)
		this->HandleTreeViewPopup2(wParam,lParam);
	};
	if (!apclrOut.empty())
	{
		aiColor4D clrOld = *((aiColor4D*)(apclrOut.front().pclrColor));

		CHOOSECOLOR clr;
		clr.lStructSize = sizeof(CHOOSECOLOR);
		clr.hwndOwner = g_hDlg;
		clr.Flags = CC_RGBINIT | CC_FULLOPEN;
		clr.rgbResult = RGB(
			clamp<unsigned char>(clrOld.r * 255.0f),
			clamp<unsigned char>(clrOld.g * 255.0f),
			clamp<unsigned char>(clrOld.b * 255.0f));
		clr.lpCustColors = g_aclCustomColors;
		clr.lpfnHook = NULL;
		clr.lpTemplateName = NULL;
		clr.lCustData = NULL;

		ChooseColor(&clr);

		clrOld.r = (float)(((unsigned int)clr.rgbResult)       & 0xFF) / 255.0f;
		clrOld.g = (float)(((unsigned int)clr.rgbResult >> 8)  & 0xFF) / 255.0f;
		clrOld.b = (float)(((unsigned int)clr.rgbResult >> 16) & 0xFF) / 255.0f;

		// update the color values in the mesh instances and
		// update all shaders ...
		for (std::vector<Info>::iterator
			i =  apclrOut.begin();
			i != apclrOut.end();++i)
		{
			*((*i).pclrColor) = *((D3DXVECTOR4*)&clrOld);
			if (!(*i).pMesh->bSharedFX)
			{
				(*i).pMesh->piEffect->SetVector((*i).szShaderParam,(*i).pclrColor);
			}
		}

		// change the material key ...
		Assimp::MaterialHelper* pcMat = (Assimp::MaterialHelper*)g_pcAsset->pcScene->mMaterials[
			this->m_pcCurrentMaterial->iIndex];
		pcMat->AddProperty<aiColor4D>(&clrOld,1,szMatKey);

		if (ID_SOLONG_CLEARSPECULARCOLOR == LOWORD(wParam) &&
			aiShadingMode_Gouraud == apclrOut.front().pMesh->eShadingMode)
		{
			CLogDisplay::Instance().AddEntry("[INFO] You have just changed the specular "
				"material color",D3DCOLOR_ARGB(0xFF,0xFF,0xFF,0));
			CLogDisplay::Instance().AddEntry(
				"This is great, especially since there is currently no specular shading",
				D3DCOLOR_ARGB(0xFF,0xFF,0xFF,0));
		}
	}
	return 1;
}
//-------------------------------------------------------------------------------
int CALLBACK TreeViewCompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)
{
	if (lParamSort == lParam1)return -1;
	if (lParamSort == lParam2)return 1;
	return 0;
}
//-------------------------------------------------------------------------------
int CDisplay::HandleTreeViewPopup2(WPARAM wParam,LPARAM lParam)
{
	char szFileName[MAX_PATH];
	DWORD dwTemp = MAX_PATH;

	switch (LOWORD(wParam))
	{
	case ID_HEY_REPLACE:
		{
		// get a path to a new texture
		if(ERROR_SUCCESS != RegQueryValueEx(g_hRegistry,"ReplaceTextureSrc",NULL,NULL,
			(BYTE*)szFileName,&dwTemp))
		{
			// Key was not found. Use C:
			strcpy(szFileName,"");
		}
		else
		{
			// need to remove the file name
			char* sz = strrchr(szFileName,'\\');
			if (!sz)sz = strrchr(szFileName,'/');
			if (!sz)*sz = 0;
		}
		OPENFILENAME sFilename1 = {
			sizeof(OPENFILENAME),
			g_hDlg,GetModuleHandle(NULL), 
			"Textures\0*.png;*.dds;*.tga;*.bmp;*.tif;*.ppm;*.ppx;*.jpg;*.jpeg;*.exr\0*.*\0", 
			NULL, 0, 1, 
			szFileName, MAX_PATH, NULL, 0, NULL, 
			"Replace this texture",
			OFN_OVERWRITEPROMPT | OFN_HIDEREADONLY | OFN_NOCHANGEDIR, 
			0, 1, ".jpg", 0, NULL, NULL
		};
		if(GetOpenFileName(&sFilename1) == 0) return 0;

		// Now store the file in the registry
		RegSetValueExA(g_hRegistry,"ReplaceTextureSrc",0,REG_SZ,(const BYTE*)szFileName,MAX_PATH);
		this->ReplaceCurrentTexture(szFileName);
		}
		return 1;

	case ID_HEY_EXPORT:
		{
		if(ERROR_SUCCESS != RegQueryValueEx(g_hRegistry,"TextureExportDest",NULL,NULL,
			(BYTE*)szFileName,&dwTemp))
		{
			// Key was not found. Use C:
			strcpy(szFileName,"");
		}
		else
		{
			// need to remove the file name
			char* sz = strrchr(szFileName,'\\');
			if (!sz)sz = strrchr(szFileName,'/');
			if (!sz)*sz = 0;
		}
		OPENFILENAME sFilename1 = {
			sizeof(OPENFILENAME),
			g_hDlg,GetModuleHandle(NULL), 
			"Textures\0*.png;*.dds;*.bmp;*.tif;*.pfm;*.jpg;*.jpeg;*.hdr\0*.*\0", NULL, 0, 1, 
			szFileName, MAX_PATH, NULL, 0, NULL, 
			"Export texture to file",
			OFN_OVERWRITEPROMPT | OFN_HIDEREADONLY | OFN_NOCHANGEDIR, 
			0, 1, ".png", 0, NULL, NULL
		};
		if(GetSaveFileName(&sFilename1) == 0) return 0;

		// Now store the file in the registry
		RegSetValueExA(g_hRegistry,"TextureExportDest",0,REG_SZ,(const BYTE*)szFileName,MAX_PATH);

		// determine the file format ...
		D3DXIMAGE_FILEFORMAT eFormat = D3DXIFF_PNG;
		const char* sz = strrchr(szFileName,'.');
		if (sz)
		{
			++sz;
			if (0 == Assimp::ASSIMP_stricmp(sz,"pfm"))eFormat = D3DXIFF_PFM;
			else if (0 == Assimp::ASSIMP_stricmp(sz,"dds"))eFormat = D3DXIFF_DDS;
			else if (0 == Assimp::ASSIMP_stricmp(sz,"jpg"))eFormat = D3DXIFF_JPG;
			else if (0 == Assimp::ASSIMP_stricmp(sz,"jpeg"))eFormat = D3DXIFF_JPG;
			else if (0 == Assimp::ASSIMP_stricmp(sz,"hdr"))eFormat = D3DXIFF_HDR;
			else if (0 == Assimp::ASSIMP_stricmp(sz,"bmp"))eFormat = D3DXIFF_BMP;
		}

		// get a pointer to the first surface of the current texture
		IDirect3DSurface9* pi = NULL;
		this->m_pcCurrentTexture->piTexture->GetSurfaceLevel(0,&pi);
		if(!pi || FAILED(D3DXSaveSurfaceToFile(szFileName,eFormat,pi,NULL,NULL)))
		{
			CLogDisplay::Instance().AddEntry("[ERROR] Unable to export texture",
				D3DCOLOR_ARGB(0xFF,0xFF,0,0));
		}
		else
		{
			CLogDisplay::Instance().AddEntry("[INFO] The texture has been exported",
				D3DCOLOR_ARGB(0xFF,0xFF,0xFF,0));
		}
		if(pi)pi->Release();
		}
		return 1;

	case ID_HEY_REMOVE:
		{

		if(IDYES != MessageBox(g_hDlg,"To recover the texture you need to reload the model. Do you wish to continue?",
			"Remove texture",MB_YESNO))
		{
			return 1;
		}

		Assimp::MaterialHelper* pcMat = (Assimp::MaterialHelper*)g_pcAsset->pcScene->mMaterials[
			this->m_pcCurrentTexture->iMatIndex];

		switch (this->m_pcCurrentTexture->iType)
		{
		case AI_TEXTYPE_DIFFUSE:
			pcMat->RemoveProperty(AI_MATKEY_TEXTURE_DIFFUSE(0));
			break;
		case AI_TEXTYPE_SPECULAR:
			pcMat->RemoveProperty(AI_MATKEY_TEXTURE_SPECULAR(0));
			break;
		case AI_TEXTYPE_AMBIENT:
			pcMat->RemoveProperty(AI_MATKEY_TEXTURE_AMBIENT(0));
			break;
		case AI_TEXTYPE_EMISSIVE:
			pcMat->RemoveProperty(AI_MATKEY_TEXTURE_EMISSIVE(0));
			break;
		case AI_TEXTYPE_NORMALS:
			pcMat->RemoveProperty(AI_MATKEY_TEXTURE_NORMALS(0));
			break;
		case AI_TEXTYPE_HEIGHT:
			pcMat->RemoveProperty(AI_MATKEY_TEXTURE_HEIGHT(0));
			break;
		case AI_TEXTYPE_SHININESS:
			pcMat->RemoveProperty(AI_MATKEY_TEXTURE_SHININESS(0));
			break;
		case (AI_TEXTYPE_OPACITY | 0x40000000):
		
			// set a special property to indicate that no alpha channel is required
			{int iVal = 1;
			pcMat->AddProperty<int>(&iVal,1,"no_a_from_d");}

			break;
		default: //case AI_TEXTYPE_OPACITY
			pcMat->RemoveProperty(AI_MATKEY_TEXTURE_OPACITY(0));
		};

		// need to update all meshes associated with this material
		for (unsigned int i = 0;i < g_pcAsset->pcScene->mNumMeshes;++i)
		{
			if (this->m_pcCurrentTexture->iMatIndex == g_pcAsset->pcScene->mMeshes[i]->mMaterialIndex)
			{
				CMaterialManager::Instance().DeleteMaterial(g_pcAsset->apcMeshes[i]);
				CMaterialManager::Instance().CreateMaterial(g_pcAsset->apcMeshes[i],g_pcAsset->pcScene->mMeshes[i]);
			}
		}
		// find the corresponding MaterialInfo structure
		const unsigned int iMatIndex = this->m_pcCurrentTexture->iMatIndex;
		for (std::vector<MaterialInfo>::iterator
			a =  this->m_asMaterials.begin();
			a != this->m_asMaterials.end();++a)
		{
			if (iMatIndex == (*a).iIndex)
			{
				// good news. we will also need to find all other textures
				// associated with this item ...
				for (std::vector<TextureInfo>::iterator
					n =  this->m_asTextures.begin();
					n != this->m_asTextures.end();++n)
				{
					if ((*n).iMatIndex == iMatIndex)
					{
						n =  this->m_asTextures.erase(n);
						if (this->m_asTextures.end() == n)break;
					}
				}
				// delete this material from all lists ...
				TreeView_DeleteItem(GetDlgItem(g_hDlg,IDC_TREE1),(*a).hTreeItem);
				this->m_asMaterials.erase(a);
				break;
			}
		}

		// add the new material to the list and make sure it will be fully expanded
		AddMaterialToDisplayList(this->m_hRoot,iMatIndex);
		HTREEITEM hNewItem = this->m_asMaterials.back().hTreeItem;
		TreeView_Expand(GetDlgItem(g_hDlg,IDC_TREE1),hNewItem,TVE_EXPAND);

		// we need to sort the list, materials come first, then nodes
		TVSORTCB sSort;
		sSort.hParent = this->m_hRoot;
		sSort.lParam = 10;
		sSort.lpfnCompare = &TreeViewCompareFunc;
		TreeView_SortChildrenCB(GetDlgItem(g_hDlg,IDC_TREE1),&sSort,0);

		// the texture was selected, but the silly user has just deleted it
		// ... go back to normal viewing mode
		TreeView_Select(GetDlgItem(g_hDlg,IDC_TREE1),this->m_hRoot,TVGN_CARET);
		return 1;
		}

	case ID_HEY_RESETTEXTURE:
		{
		aiString szOld;
		aiMaterial* pcMat = g_pcAsset->pcScene->mMaterials[this->m_pcCurrentTexture->iMatIndex];
		switch (this->m_pcCurrentTexture->iType)
		{
		case AI_TEXTYPE_DIFFUSE:
			aiGetMaterialString(pcMat,AI_MATKEY_TEXTURE_DIFFUSE(0) "_old",&szOld);
			break;
		case AI_TEXTYPE_SPECULAR:
			aiGetMaterialString(pcMat,AI_MATKEY_TEXTURE_SPECULAR(0) "_old",&szOld);
			break;
		case AI_TEXTYPE_AMBIENT:
			aiGetMaterialString(pcMat,AI_MATKEY_TEXTURE_AMBIENT(0) "_old",&szOld);
			break;
		case AI_TEXTYPE_EMISSIVE:
			aiGetMaterialString(pcMat,AI_MATKEY_TEXTURE_EMISSIVE(0) "_old",&szOld);
			break;
		case AI_TEXTYPE_NORMALS:
			aiGetMaterialString(pcMat,AI_MATKEY_TEXTURE_NORMALS(0) "_old",&szOld);
			break;
		case AI_TEXTYPE_HEIGHT:
			aiGetMaterialString(pcMat,AI_MATKEY_TEXTURE_HEIGHT(0) "_old",&szOld);
			break;
		case AI_TEXTYPE_SHININESS:
			aiGetMaterialString(pcMat,AI_MATKEY_TEXTURE_SHININESS(0) "_old",&szOld);
			break;
		default : //case AI_TEXTYPE_OPACITY && case AI_TEXTYPE_OPACITY | 0x40000000:
			aiGetMaterialString(pcMat,AI_MATKEY_TEXTURE_OPACITY(0) "_old",&szOld);
			break;
		};
		if (0 != szOld.length)this->ReplaceCurrentTexture(szOld.data);
		return 1;
		}
	}
	return 0;
}
//-------------------------------------------------------------------------------
int CDisplay::SetupStereoView()
{
	if (NULL != g_pcAsset && NULL != g_pcAsset->pcScene->mRootNode)
	{
		// enable the RED, GREEN and ALPHA channels
		g_piDevice->SetRenderState(D3DRS_COLORWRITEENABLE,
			D3DCOLORWRITEENABLE_RED |
			D3DCOLORWRITEENABLE_ALPHA |
			D3DCOLORWRITEENABLE_GREEN);

		// move the camera a little bit to the left
		g_sCamera.vPos -= g_sCamera.vRight * 0.03f;
	}
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::RenderStereoView(const aiMatrix4x4& m)
{
	// and rerender the scene
	if (NULL != g_pcAsset && NULL != g_pcAsset->pcScene->mRootNode)
	{
		// enable the BLUE, GREEN and ALPHA channels
		g_piDevice->SetRenderState(D3DRS_COLORWRITEENABLE,
			D3DCOLORWRITEENABLE_GREEN |
			D3DCOLORWRITEENABLE_ALPHA |
			D3DCOLORWRITEENABLE_BLUE);

		// clear the z-buffer
		g_piDevice->Clear(0,NULL,D3DCLEAR_ZBUFFER,0,1.0f,0);

		// move the camera a little bit to the right
		g_sCamera.vPos += g_sCamera.vRight * 0.06f;

		RenderNode(g_pcAsset->pcScene->mRootNode,m,false);
		g_piDevice->SetRenderState(D3DRS_ZWRITEENABLE,FALSE);
		RenderNode(g_pcAsset->pcScene->mRootNode,m,true);
		g_piDevice->SetRenderState(D3DRS_ZWRITEENABLE,TRUE);

		// (move back to the original position)
		g_sCamera.vPos -= g_sCamera.vRight * 0.03f;

		// reenable all channels
		g_piDevice->SetRenderState(D3DRS_COLORWRITEENABLE,
			D3DCOLORWRITEENABLE_RED |
			D3DCOLORWRITEENABLE_GREEN |
			D3DCOLORWRITEENABLE_ALPHA |
			D3DCOLORWRITEENABLE_BLUE);
	}
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::HandleInputTextureView()
{
	HandleMouseInputTextureView();
	HandleKeyboardInputTextureView();
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::HandleInput()
{
	if(CBackgroundPainter::TEXTURE_CUBE == CBackgroundPainter::Instance().GetMode())
		HandleMouseInputSkyBox();

	// handle input commands
	HandleMouseInputLightRotate();
	HandleMouseInputLightIntensityAndColor();
	if(g_bFPSView)
	{
		HandleMouseInputFPS();
		HandleKeyboardInputFPS();
	}
	else HandleMouseInputLocal();

	// compute auto rotation depending on the time which has passed
	if (g_sOptions.bRotate)
	{
		aiMatrix4x4 mMat;
		D3DXMatrixRotationYawPitchRoll((D3DXMATRIX*)&mMat,
			g_vRotateSpeed.x * g_fElpasedTime,
			g_vRotateSpeed.y * g_fElpasedTime,
			g_vRotateSpeed.z * g_fElpasedTime);
		g_mWorldRotate = g_mWorldRotate * mMat;
	}

	// Handle rotations of light source(s)
	if (g_sOptions.bLightRotate)
	{
		aiMatrix4x4 mMat;
		D3DXMatrixRotationYawPitchRoll((D3DXMATRIX*)&mMat,
			g_vRotateSpeed.x * g_fElpasedTime * 0.5f,
			g_vRotateSpeed.y * g_fElpasedTime * 0.5f,
			g_vRotateSpeed.z * g_fElpasedTime * 0.5f);

		D3DXVec3TransformNormal((D3DXVECTOR3*)&g_avLightDirs[0],
			(D3DXVECTOR3*)&g_avLightDirs[0],(D3DXMATRIX*)&mMat);

		// 2 lights to rotate?
		if (g_sOptions.b3Lights)
		{
			D3DXVec3TransformNormal((D3DXVECTOR3*)&g_avLightDirs[1],
				(D3DXVECTOR3*)&g_avLightDirs[1],(D3DXMATRIX*)&mMat);

			g_avLightDirs[1].Normalize();
		}
		g_avLightDirs[0].Normalize();
	}
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::HandleInputEmptyScene()
{
	if(CBackgroundPainter::TEXTURE_CUBE == CBackgroundPainter::Instance().GetMode())
	{
		if (g_bFPSView)
		{
			HandleMouseInputFPS();
			HandleKeyboardInputFPS();
		}
		HandleMouseInputSkyBox();

		// need to store the last mouse position in the global variable
		// HandleMouseInputFPS() is doing this internally
		if (!g_bFPSView)
		{
			g_LastmousePos.x = g_mousePos.x;
			g_LastmousePos.y = g_mousePos.y;
		}
	}
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::DrawHUD()
{
	// get the dimension of the back buffer
	RECT sRect;
	GetWindowRect(GetDlgItem(g_hDlg,IDC_RT),&sRect);
	sRect.right -= sRect.left;
	sRect.bottom -= sRect.top;

	struct SVertex
	{
		float x,y,z,w,u,v;
	};

	// commit the texture to the shader
	// FIX: Necessary because the texture view is also using this shader
	g_piPassThroughEffect->SetTexture("TEXTURE_2D",g_pcTexture);

	// NOTE: The shader might be used for other purposes, too.
	// So ensure the right technique is there
	g_piPassThroughEffect->SetTechnique("PassThrough");

	// build vertices for drawing from system memory
	UINT dw;
	g_piPassThroughEffect->Begin(&dw,0);
	g_piPassThroughEffect->BeginPass(0);

	D3DSURFACE_DESC sDesc;
	g_pcTexture->GetLevelDesc(0,&sDesc);
	SVertex as[4];
	float fHalfX = ((float)sRect.right-(float)sDesc.Width) / 2.0f;
	float fHalfY = ((float)sRect.bottom-(float)sDesc.Height) / 2.0f;
	as[1].x = fHalfX;
	as[1].y = fHalfY;
	as[1].z = 0.2f;
	as[1].w = 1.0f;
	as[1].u = 0.0f;
	as[1].v = 0.0f;

	as[3].x = (float)sRect.right-fHalfX;
	as[3].y = fHalfY;
	as[3].z = 0.2f;
	as[3].w = 1.0f;
	as[3].u = 1.0f;
	as[3].v = 0.0f;

	as[0].x = fHalfX;
	as[0].y = (float)sRect.bottom-fHalfY;
	as[0].z = 0.2f;
	as[0].w = 1.0f;
	as[0].u = 0.0f;
	as[0].v = 1.0f;

	as[2].x = (float)sRect.right-fHalfX;
	as[2].y = (float)sRect.bottom-fHalfY;
	as[2].z = 0.2f;
	as[2].w = 1.0f;
	as[2].u = 1.0f;
	as[2].v = 1.0f;

	as[0].x -= 0.5f;as[1].x -= 0.5f;as[2].x -= 0.5f;as[3].x -= 0.5f;
	as[0].y -= 0.5f;as[1].y -= 0.5f;as[2].y -= 0.5f;as[3].y -= 0.5f;

	// draw the screen-filling squad
	DWORD dw2;g_piDevice->GetFVF(&dw2);
	g_piDevice->SetFVF(D3DFVF_XYZRHW | D3DFVF_TEX1);
	g_piDevice->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP,2,
		&as,sizeof(SVertex));

	// end the effect and recover the old vertex format
	g_piPassThroughEffect->EndPass();
	g_piPassThroughEffect->End();

	g_piDevice->SetFVF(dw2);
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::RenderFullScene()
{
	// reset the color index used for drawing normals
	g_iCurrentColor = 0;

	// reset frame counter and rotation tracker 
	CMeshRenderer::Instance().OnBeginFrame();

	// setup wireframe/solid rendering mode
	if (g_sOptions.eDrawMode == RenderOptions::WIREFRAME)
	{
		g_piDevice->SetRenderState(D3DRS_FILLMODE,D3DFILL_WIREFRAME);
	}
	else g_piDevice->SetRenderState(D3DRS_FILLMODE,D3DFILL_SOLID);

	// draw the scene background (clear and texture 2d)
	CBackgroundPainter::Instance().OnPreRender();

	// setup the stereo view if necessary
	if (g_sOptions.bStereoView)
	{
		this->SetupStereoView();
	}

	// draw all opaque objects in the scene
	aiMatrix4x4 m;
	if (NULL != g_pcAsset && NULL != g_pcAsset->pcScene->mRootNode)
	{
		this->HandleInput();
		m =  g_mWorld * g_mWorldRotate;
		RenderNode(g_pcAsset->pcScene->mRootNode,m,false);
	}

	// if a cube texture is loaded as background image, the user
	// should be able to rotate it even if no asset is loaded
	this->HandleInputEmptyScene();

	// draw the scene background
	CBackgroundPainter::Instance().OnPostRender();

	// draw all non-opaque objects in the scene
	if (NULL != g_pcAsset && NULL != g_pcAsset->pcScene->mRootNode)
	{
		// disable the z-buffer
		g_piDevice->SetRenderState(D3DRS_ZWRITEENABLE,FALSE);
		RenderNode(g_pcAsset->pcScene->mRootNode,m,true);
		g_piDevice->SetRenderState(D3DRS_ZWRITEENABLE,TRUE);
	}

	// setup the stereo view if necessary
	if (g_sOptions.bStereoView)
	{
		this->RenderStereoView(m);
	}

	// draw the HUD texture on top of the rendered scene using
	// pre-projected vertices
	if (!g_bFPSView && g_pcAsset && g_pcTexture)
	{
		this->DrawHUD();
	}
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::RenderMaterialView()
{
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::RenderNode (aiNode* piNode,const aiMatrix4x4& piMatrix,
						  bool bAlpha /*= false*/)
{
	aiMatrix4x4 mTemp = piNode->mTransformation;
	mTemp.Transpose();
	aiMatrix4x4 aiMe = mTemp * piMatrix;

	bool bChangedVM = false;
	if (VIEWMODE_NODE == this->m_iViewMode && this->m_pcCurrentNode)
	{
		if (piNode != this->m_pcCurrentNode->psNode)
		{
			if (0 != piNode->mNumChildren)
			{
				// directly call our children
				for (unsigned int i = 0; i < piNode->mNumChildren;++i)
				{
					RenderNode(piNode->mChildren[i],aiMe,bAlpha );
				}
			}
			return 1;
		}
		this->m_iViewMode = VIEWMODE_FULL;
		bChangedVM = true;
	}

	aiMatrix4x4 pcProj;
	GetProjectionMatrix(pcProj);

	aiMatrix4x4 pcCam;
	aiVector3D vPos = GetCameraMatrix(pcCam);
	pcProj = (aiMe * pcCam) * pcProj;

	pcCam = aiMe;
	pcCam.Inverse().Transpose();

	// VERY UNOPTIMIZED, much stuff is redundant. Who cares?
	if (!g_sOptions.bRenderMats && !bAlpha)
	{
		// this is very similar to the code in SetupMaterial()
		ID3DXEffect* piEnd = g_piDefaultEffect;

		// commit transformation matrices to the shader
		piEnd->SetMatrix("WorldViewProjection",
			(const D3DXMATRIX*)&pcProj);

		piEnd->SetMatrix("World",(const D3DXMATRIX*)&aiMe);
		piEnd->SetMatrix("WorldInverseTranspose",
			(const D3DXMATRIX*)&pcCam);

		if ( CBackgroundPainter::TEXTURE_CUBE == CBackgroundPainter::Instance().GetMode())
		{
			pcCam = pcCam * pcProj;
			piEnd->SetMatrix("ViewProj",(const D3DXMATRIX*)&pcCam);
			pcCam.Inverse();
			piEnd->SetMatrix("InvViewProj",(const D3DXMATRIX*)&pcCam);
		}

		// commit light colors and direction to the shader
		D3DXVECTOR4 apcVec[5];
		apcVec[0].x = g_avLightDirs[0].x;
		apcVec[0].y = g_avLightDirs[0].y;
		apcVec[0].z = g_avLightDirs[0].z;
		apcVec[1].x = g_avLightDirs[0].x * -1.0f;
		apcVec[1].y = g_avLightDirs[0].y * -1.0f;
		apcVec[1].z = g_avLightDirs[0].z * -1.0f;

		D3DXVec4Normalize(&apcVec[0],&apcVec[0]);
		D3DXVec4Normalize(&apcVec[1],&apcVec[1]);
		piEnd->SetVectorArray("afLightDir",apcVec,5);

		apcVec[0].x = ((g_avLightColors[0] >> 16) & 0xFF) / 255.0f;
		apcVec[0].y = ((g_avLightColors[0] >> 8) & 0xFF) / 255.0f;
		apcVec[0].z = ((g_avLightColors[0]) & 0xFF) / 255.0f;
		apcVec[0].w = 1.0f;

		apcVec[1].x = ((g_avLightColors[1] >> 16) & 0xFF) / 255.0f;
		apcVec[1].y = ((g_avLightColors[1] >> 8) & 0xFF) / 255.0f;
		apcVec[1].z = ((g_avLightColors[1]) & 0xFF) / 255.0f;
		apcVec[1].w = 0.0f;

		apcVec[0] *= g_fLightIntensity;
		apcVec[1] *= g_fLightIntensity;
		piEnd->SetVectorArray("afLightColor",apcVec,5);

		apcVec[0].x = vPos.x;
		apcVec[0].y = vPos.y;
		apcVec[0].z = vPos.z;
		piEnd->SetVector( "vCameraPos",&apcVec[0]);

		// setup the best technique 
		if (g_sCaps.PixelShaderVersion < D3DPS_VERSION(3,0) || g_sOptions.bLowQuality)
		{
			if (g_sOptions.b3Lights)
				piEnd->SetTechnique("DefaultFXSpecular_PS20_D2");
			else piEnd->SetTechnique("DefaultFXSpecular_PS20_D1");
		}
		else
		{
			if (g_sOptions.b3Lights)
				piEnd->SetTechnique("DefaultFXSpecular_D2");
			else piEnd->SetTechnique("DefaultFXSpecular_D1");
		}

		// setup the default material
		UINT dwPasses = 0;
		piEnd->Begin(&dwPasses,0);
		piEnd->BeginPass(0);
	}
	D3DXVECTOR4 vVector = g_aclNormalColors[g_iCurrentColor];
	if (++g_iCurrentColor == 14)
	{
		g_iCurrentColor = 0;
	}
	if (! (!g_sOptions.bRenderMats && bAlpha))
	{
		for (unsigned int i = 0; i < piNode->mNumMeshes;++i)
		{
			// don't render the mesh if the render pass is incorrect
			if (g_sOptions.bRenderMats && (
				g_pcAsset->apcMeshes[piNode->mMeshes[i]]->piOpacityTexture || 
				g_pcAsset->apcMeshes[piNode->mMeshes[i]]->fOpacity != 1.0f))
			{
				if (!bAlpha)continue;
			}
			else if (bAlpha)continue;

			// now setup the material
			if (g_sOptions.bRenderMats)
			{
				CMaterialManager::Instance().SetupMaterial(
					g_pcAsset->apcMeshes[piNode->mMeshes[i]],pcProj,aiMe,pcCam,vPos);
			}

			if (bAlpha)CMeshRenderer::Instance().DrawSorted(piNode->mMeshes[i],aiMe);
			else CMeshRenderer::Instance().DrawUnsorted(piNode->mMeshes[i]);

			// now end the material
			if (g_sOptions.bRenderMats)
			{
				CMaterialManager::Instance().EndMaterial(
					g_pcAsset->apcMeshes[piNode->mMeshes[i]]);
			}

			// render normal vectors?
			if (g_sOptions.bRenderNormals && g_pcAsset->apcMeshes[piNode->mMeshes[i]]->piVBNormals)
			{
				// this is very similar to the code in SetupMaterial()
				ID3DXEffect* piEnd = g_piNormalsEffect;

				piEnd->SetVector("OUTPUT_COLOR",&vVector);

				piEnd->SetMatrix("WorldViewProjection",
					(const D3DXMATRIX*)&pcProj);

				UINT dwPasses = 0;
				piEnd->Begin(&dwPasses,0);
				piEnd->BeginPass(0);

				g_piDevice->SetStreamSource(0,
					g_pcAsset->apcMeshes[piNode->mMeshes[i]]->piVBNormals,0,
					sizeof(AssetHelper::LineVertex));

				g_piDevice->DrawPrimitive(D3DPT_LINELIST,0,
					g_pcAsset->pcScene->mMeshes[piNode->mMeshes[i]]->mNumVertices);

				piEnd->EndPass();
				piEnd->End();
			}
		}
		// end the default material
		if (!g_sOptions.bRenderMats)
		{
			g_piDefaultEffect->EndPass();
			g_piDefaultEffect->End();
		}
	}
	// render all child nodes
	for (unsigned int i = 0; i < piNode->mNumChildren;++i)
	{
		RenderNode(piNode->mChildren[i],aiMe,bAlpha );
	}
	// need to reset the viewmode?
	if (bChangedVM)
		this->m_iViewMode = VIEWMODE_NODE;
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::RenderPatternBG()
{
	if (!g_piPatternEffect)
	{
		// seems we have not yet compiled this shader.
		// and NOW is the best time to do that ...
		ID3DXBuffer* piBuffer = NULL;
		if(FAILED( D3DXCreateEffect(g_piDevice,
			g_szCheckerBackgroundShader.c_str(),
			(UINT)g_szCheckerBackgroundShader.length(),
			NULL,
			NULL,
			D3DXSHADER_USE_LEGACY_D3DX9_31_DLL,
			NULL,
			&g_piPatternEffect,&piBuffer)))
		{
			if( piBuffer) 
			{
				MessageBox(g_hDlg,(LPCSTR)piBuffer->GetBufferPointer(),"HLSL",MB_OK);
				piBuffer->Release();
			}
			return 0;
		}
		if( piBuffer) 
		{
			piBuffer->Release();
			piBuffer = NULL;
		}
	}
	// clear the color buffer in magenta
	g_piDevice->Clear(0,NULL,D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER,
		D3DCOLOR_ARGB(0xFF,0xFF,0,0xFF), 1.0f,0 );

	if (!g_piPatternEffect)
	{
		return 0;
	}

	// setup the shader
	UINT dw;
	g_piPatternEffect->Begin(&dw,0);
	g_piPatternEffect->BeginPass(0);

	RECT sRect;
	GetWindowRect(GetDlgItem(g_hDlg,IDC_RT),&sRect);
	sRect.right -= sRect.left;
	sRect.bottom -= sRect.top;

	struct SVertex
	{
		float x,y,z,w;
	};
	// build the screen-filling rectangle
	SVertex as[4];
	as[1].x = 0.0f;
	as[1].y = 0.0f;
	as[1].z = 0.2f;
	as[3].x = (float)sRect.right;
	as[3].y = 0.0f;
	as[3].z = 0.2f;
	as[0].x = 0.0f;
	as[0].y = (float)sRect.bottom;
	as[0].z = 0.2f;
	as[2].x = (float)sRect.right;
	as[2].y = (float)sRect.bottom;
	as[2].z = 0.2f;

	as[0].w = 1.0f;
	as[1].w = 1.0f;
	as[2].w = 1.0f;
	as[3].w = 1.0f;
	
	as[0].x -= 0.5f;as[1].x -= 0.5f;as[2].x -= 0.5f;as[3].x -= 0.5f;
	as[0].y -= 0.5f;as[1].y -= 0.5f;as[2].y -= 0.5f;as[3].y -= 0.5f;

	// draw the rectangle
	DWORD dw2;g_piDevice->GetFVF(&dw2);
	g_piDevice->SetFVF(D3DFVF_XYZRHW);
	g_piDevice->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP,2,
		&as,sizeof(SVertex));
	g_piDevice->SetFVF(dw2);

	// cleanup
	g_piPatternEffect->EndPass();
	g_piPatternEffect->End();
	return 1;
}
//-------------------------------------------------------------------------------
int CDisplay::RenderTextureView()
{
	if (!g_pcAsset || !g_pcAsset->pcScene)return 0;

	// handle input
	this->HandleInputTextureView();

	// render the background
	this->RenderPatternBG();

	// it might be that there is no texture ...
	if (!this->m_pcCurrentTexture->piTexture)
	{
		// FIX: no such log message. it would be repeated to often
		//CLogDisplay::Instance().AddEntry("Unable to display texture. Image is unreachable.",
		//	D3DCOLOR_ARGB(0xFF,0xFF,0,0));
		return 0;
	}


	RECT sRect;
	GetWindowRect(GetDlgItem(g_hDlg,IDC_RT),&sRect);
	sRect.right -= sRect.left;
	sRect.bottom -= sRect.top;

	// commit the texture to the shader
	g_piPassThroughEffect->SetTexture("TEXTURE_2D",this->m_pcCurrentTexture->piTexture);

	if (AI_TEXTYPE_OPACITY == this->m_pcCurrentTexture->iType)
	{
		g_piPassThroughEffect->SetTechnique("PassThroughAlphaFromR");
	}
	else if ((AI_TEXTYPE_OPACITY | 0x40000000) == this->m_pcCurrentTexture->iType)
	{
		g_piPassThroughEffect->SetTechnique("PassThroughAlphaFromA");
	}
	else g_piPassThroughEffect->SetTechnique("PassThrough");

	UINT dw;
	g_piPassThroughEffect->Begin(&dw,0);
	g_piPassThroughEffect->BeginPass(0);

	if (AI_TEXTYPE_HEIGHT == this->m_pcCurrentTexture->iType ||
		AI_TEXTYPE_NORMALS == this->m_pcCurrentTexture->iType)
	{
		// manually disable alpha blending
		g_piDevice->SetRenderState(D3DRS_ALPHABLENDENABLE,FALSE);
	}

	// build a rectangle which centers the texture
	// scaling is OK, but no stretching
	D3DSURFACE_DESC sDesc;
	this->m_pcCurrentTexture->piTexture->GetLevelDesc(0,&sDesc);

	struct SVertex{float x,y,z,w,u,v;};
	SVertex as[4];

	const float nx = (float)sRect.right;
	const float ny = (float)sRect.bottom;
	const float  x = (float)sDesc.Width;
	const float  y = (float)sDesc.Height;
	float f = std::min((nx-30) / x,(ny-30) / y) * (this->m_fTextureZoom/1000.0f);
	
	float fHalfX = (nx - (f * x)) / 2.0f;
	float fHalfY = (ny - (f * y)) / 2.0f;
	as[1].x = fHalfX + this->m_vTextureOffset.x;
	as[1].y = fHalfY + this->m_vTextureOffset.y;
	as[1].z = 0.2f;
	as[1].w = 1.0f;
	as[1].u = 0.0f;
	as[1].v = 0.0f;
	as[3].x = nx-fHalfX + this->m_vTextureOffset.x;
	as[3].y = fHalfY + this->m_vTextureOffset.y;
	as[3].z = 0.2f;
	as[3].w = 1.0f;
	as[3].u = 1.0f;
	as[3].v = 0.0f;
	as[0].x = fHalfX + this->m_vTextureOffset.x;
	as[0].y = ny-fHalfY + this->m_vTextureOffset.y;
	as[0].z = 0.2f;
	as[0].w = 1.0f;
	as[0].u = 0.0f;
	as[0].v = 1.0f;
	as[2].x = nx-fHalfX + this->m_vTextureOffset.x;
	as[2].y = ny-fHalfY + this->m_vTextureOffset.y;
	as[2].z = 0.2f;
	as[2].w = 1.0f;
	as[2].u = 1.0f;
	as[2].v = 1.0f;
	as[0].x -= 0.5f;as[1].x -= 0.5f;as[2].x -= 0.5f;as[3].x -= 0.5f;
	as[0].y -= 0.5f;as[1].y -= 0.5f;as[2].y -= 0.5f;as[3].y -= 0.5f;

	// draw the rectangle
	DWORD dw2;g_piDevice->GetFVF(&dw2);
	g_piDevice->SetFVF(D3DFVF_XYZRHW | D3DFVF_TEX1);
	g_piDevice->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP,2,
		&as,sizeof(SVertex));
	g_piDevice->SetFVF(dw2);

	g_piPassThroughEffect->EndPass();
	g_piPassThroughEffect->End();

	// do we need to draw UV coordinates?
	return 1;
}
};