/*
**	Command & Conquer Generals(tm)
**	Copyright 2025 Electronic Arts Inc.
**
**	This program is free software: you can redistribute it and/or modify
**	it under the terms of the GNU General Public License as published by
**	the Free Software Foundation, either version 3 of the License, or
**	(at your option) any later version.
**
**	This program is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
**	GNU General Public License for more details.
**
**	You should have received a copy of the GNU General Public License
**	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

////////////////////////////////////////////////////////////////////////////////
//																																						//
//  (c) 2001-2003 Electronic Arts Inc.																				//
//																																						//
////////////////////////////////////////////////////////////////////////////////

// FILE: W3DShaderManager.cpp ////////////////////////////////////////////////
//-----------------------------------------------------------------------------
//                                                                          
//                       Westwood Studios Pacific.                          
//                                                                          
//                       Confidential Information                           
//                Copyright (C) 2001 - All Rights Reserved                  
//                                                                          
//-----------------------------------------------------------------------------
//
// Project:   RTS3
//
// File name: W3DShaderManager.cpp
//
// Created:   Mark Wilczynski, August 2001
//
// Desc:      Perform tests on currently selected WW3D/D3D device to determine
//			  which of our rendering features are supported.  The system allows
//			  setting up a few custom shaders that are selected based on video
//			  card features.
//
//			  To add a new shader to the system:
//			  0) Add your shader to the ShaderTypes enum
//			  1) Create shader using W3DShaderInterface
//			  2) Repeat step 1 for any alternate shaders
//			  3) Create list of alternate shaders sorted by order of preference.
//				 The first shader which passes hardware validation will be selected.
//			  4) Add list from step 3) to MasterShaderList[].
//
//-----------------------------------------------------------------------------

#include "dx8wrapper.h"
#include "assetmgr.h"
#include "Lib/BaseType.h"
#include "Common/File.h"
#include "Common/FileSystem.h"
#include "W3DDevice/GameClient/W3DShaderManager.h"
#include "W3DDevice/GameClient/W3DShroud.h"
#include "W3DDevice/GameClient/HeightMap.h"
#include "W3DDevice/GameClient/W3DCustomScene.h"
#include "GameClient/view.h"
#include "GameClient/CommandXlat.h"
#include "GameClient/display.h"
#include "GameClient/Water.h"
#include "GameLogic/GameLogic.h"
#include "common/GlobalData.h"
#include "common/GameLOD.h"
#include "d3dx8tex.h"
#include "dx8caps.h"
#include "common/gamelod.h"
#include "Benchmark.h"

#ifdef _INTERNAL
// for occasional debugging...
//#pragma optimize("", off)
//#pragma MESSAGE("************************************** WARNING, optimization disabled for debugging purposes")
#endif

/** Interface definition for custom shaders we define in our app.  These shaders can perform more complex
	operations than those allowed in the WW3D2 shader system.
*/
class W3DShaderInterface
{
public:
	Int getNumPasses(void) {return m_numPasses;};	///<return number of passes needed for this shader
	virtual Int set(Int pass) {return TRUE;};		///<setup shader for the specified rendering pass.
	 ///do any custom resetting necessary to bring W3D in sync.
	virtual void reset(void) {
		ShaderClass::Invalidate();
		DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, NULL);
		DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, NULL);};
	virtual Int init(void) = 0;			///<perform any one time initialization and validation
	virtual Int shutdown(void) { return TRUE;};			///<release resources used by shader
protected:
	Int m_numPasses;						///<number of passes to complete shader
};

//this table will contain custom versions of each shader tuned for specific video card and user options.
static W3DFilterInterface *W3DFilters[FT_MAX];
static W3DShaderInterface *W3DShaders[W3DShaderManager::ST_MAX];
static Int W3DShadersPassCount[W3DShaderManager::ST_MAX];	//number of passes for each of the above shaders
TextureClass *W3DShaderManager::m_Textures[8];
W3DShaderManager::ShaderTypes W3DShaderManager::m_currentShader;
FilterTypes W3DShaderManager::m_currentFilter=FT_NULL_FILTER; ///< Last filter that was set.
Int W3DShaderManager::m_currentShaderPass;

Bool W3DShaderManager::m_renderingToTexture = false;
IDirect3DSurface8 *W3DShaderManager::m_oldRenderSurface=NULL;	///<previous render target
IDirect3DTexture8 *W3DShaderManager::m_renderTexture=NULL;		///<texture into which rendering will be redirected.
IDirect3DSurface8 *W3DShaderManager::m_newRenderSurface=NULL;	///<new render target inside m_renderTexture
IDirect3DSurface8 *W3DShaderManager::m_oldDepthSurface=NULL;	///<previous depth buffer surface
/*===========================================================================================*/
/*=========      Screen Shaders	=============================================================*/
/*===========================================================================================*/

/*=========  ScreenBWFilter	=============================================================*/
///converts viewport to black & white.

Int ScreenBWFilter::m_fadeFrames;
Int ScreenBWFilter::m_curFadeFrame;
Real ScreenBWFilter::m_curFadeValue;
Int ScreenBWFilter::m_fadeDirection;

ScreenBWFilter screenBWFilter;
ScreenBWFilterDOT3 screenBWFilterDOT3;	//slower version for older cards without pixel shaders.

///List of different BW shader implementations in order of preference
W3DFilterInterface *ScreenBWFilterList[]=
{
	&screenBWFilter,
	&screenBWFilterDOT3,	//slower version for older cards without pixel shaders.
	NULL
};

Int ScreenBWFilter::init(void)
{
	Int res;
	HRESULT hr;

	m_dwBWPixelShader = NULL;
	m_curFadeFrame = 0;

	if (!W3DShaderManager::canRenderToTexture()) {
		// Have to be able to render to texture.
		return false;
	}

	if ((res=W3DShaderManager::getChipset()) != 0)
	{
		if (res >= DC_GENERIC_PIXEL_SHADER_1_1)
		{
			//this shader needs some assets that need to be loaded
			//shader decleration
			DWORD Declaration[]=
			{
				(D3DVSD_STREAM(0)),
				(D3DVSD_REG(0, D3DVSDT_FLOAT3)), // Position
				(D3DVSD_REG(1, D3DVSDT_D3DCOLOR)), // Diffuse
				(D3DVSD_REG(2, D3DVSDT_FLOAT2)), //  Texture Coordinates
				(D3DVSD_END())
			};

			//Monochrome pixel shader.
			hr = W3DShaderManager::LoadAndCreateD3DShader("shaders\\monochrome.pso", &Declaration[0], 0, false, &m_dwBWPixelShader);
			if (FAILED(hr))
				return FALSE;

			W3DFilters[FT_VIEW_BW_FILTER]=&screenBWFilter;

			return TRUE;
		}
	}
	return FALSE;
}

Bool ScreenBWFilter::preRender(Bool &skipRender, CustomScenePassModes &scenePassMode)
{
	skipRender = false;
	W3DShaderManager::startRenderToTexture();
	return true;
}

Bool ScreenBWFilter::postRender(enum FilterModes mode, Coord2D &scrollDelta,Bool &doExtraRender)
{
	IDirect3DTexture8 * tex =	W3DShaderManager::endRenderToTexture();
	DEBUG_ASSERTCRASH(tex, ("Require rendered texture."));
	if (!tex) return false;
	if (!set(mode)) return false;

	LPDIRECT3DDEVICE8 pDev=DX8Wrapper::_Get_D3D_Device8();

	struct _TRANS_LIT_TEX_VERTEX {
		D3DXVECTOR4 p;
		DWORD color;   // diffuse color    
		float	u;
		float	v;
	} v[4];

	Int xpos, ypos, width, height;

	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0,tex);	//previously rendered frame inside this texture
	TheTacticalView->getOrigin(&xpos,&ypos);
	width=TheTacticalView->getWidth();
	height=TheTacticalView->getHeight();

	//bottom right
	v[0].p = D3DXVECTOR4( xpos+width-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[0].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[0].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	//top right
	v[1].p = D3DXVECTOR4( xpos+width-0.5f, ypos-0.5f, 0.0f, 1.0f );
	v[1].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[1].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	//bottom left
	v[2].p = D3DXVECTOR4(  xpos-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[2].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[2].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	//top left
	v[3].p = D3DXVECTOR4(  xpos-0.5f,  ypos-0.5f, 0.0f, 1.0f );
	v[3].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[3].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	v[0].color = 0xffffffff;
	v[1].color = 0xffffffff;
	v[2].color = 0xffffffff;
	v[3].color = 0xffffffff;

	//draw polygons like this is very inefficient but for only 2 triangles, it's
	//not worth bothering with index/vertex buffers.
	pDev->SetVertexShader(D3DFVF_XYZRHW | D3DFVF_DIFFUSE | D3DFVF_TEX1);

	pDev->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, v, sizeof(_TRANS_LIT_TEX_VERTEX));

	reset();
	return true;
}

Int ScreenBWFilter::set(enum FilterModes mode)
{
	HRESULT hr;

	if (mode > FM_NULL_MODE)
	{	//rendering a quad with redirected rendering surface tinted by pixel shader

		if (m_fadeDirection > 0)
		{	//turning effect on
			m_curFadeFrame++;
			Int fade = m_curFadeFrame;

			if (fade<m_fadeFrames)
			{
				m_curFadeValue = (Real)fade/(Real)m_fadeFrames;
			}
			else
			{
				m_curFadeFrame = 0;
				m_curFadeValue = 1.0f;
				m_fadeDirection = 0;
			}
		}
		else
		if (m_fadeDirection < 0)
		{	//turning effect off
			m_curFadeFrame++;
			Int fade = m_curFadeFrame;
			if (fade<m_fadeFrames)
			{
				m_curFadeValue = 1.0f - (Real)fade/(Real)m_fadeFrames;
			}
			else
			{	m_curFadeValue = 0.0f;
				TheTacticalView->setViewFilterMode(FM_NULL_MODE);
				TheTacticalView->setViewFilter(FT_NULL_FILTER);
				m_curFadeFrame = 0;
				m_fadeDirection = 0;
			}
		}

		VertexMaterialClass *vmat=VertexMaterialClass::Get_Preset(VertexMaterialClass::PRELIT_DIFFUSE);
		DX8Wrapper::Set_Material(vmat);
		REF_PTR_RELEASE(vmat);	//no need to keep a reference since it's a preset.
		DX8Wrapper::Set_Shader(ShaderClass::_PresetOpaqueShader);
		DX8Wrapper::Set_Texture(0,NULL);
		DX8Wrapper::Apply_Render_State_Changes();	//force update of view and projection matrices

		DX8Wrapper::Set_DX8_Render_State(D3DRS_ZFUNC,D3DCMP_ALWAYS);
		DX8Wrapper::Set_DX8_Render_State(D3DRS_ZWRITEENABLE,FALSE);
		DX8Wrapper::Apply_Render_State_Changes();	//force update of view and projection matrices

		hr=DX8Wrapper::_Get_D3D_Device8()->SetPixelShader(m_dwBWPixelShader);
		DX8Wrapper::_Get_D3D_Device8()->SetPixelShaderConstant(0,   D3DXVECTOR4(0.3f, 0.59f, 0.11f, 1.0f), 1);

		D3DXVECTOR4	color(1.0f,1.0f,1.0f,1.0f);	//multiply color

		if (mode == FM_VIEW_BW_BLACK_AND_WHITE)
		{	//back & white mode
			color.x=1.0f;
			color.y=1.0f;
			color.z=1.0f;
		}
		if (mode == FM_VIEW_BW_RED_AND_WHITE)
		{	//red is on
			color.x = 1.0f;
			color.y = 0.0f;
			color.z = 0.0f;
			//inverse red is on
			//red is on
//			color.x = 0.0f;
//			color.y = 1.0f;
//			color.z = 1.0f;
		}
		if (mode == FM_VIEW_BW_GREEN_AND_WHITE)
		{
			color.x = 0.0f;
			color.y = 1.0f;
			color.z = 0.0f;
		}

		DX8Wrapper::_Get_D3D_Device8()->SetPixelShaderConstant(1,   color, 1);
		DX8Wrapper::_Get_D3D_Device8()->SetPixelShaderConstant(2,	D3DXVECTOR4(m_curFadeValue, m_curFadeValue, m_curFadeValue, 1.0f), 1);
/*		DX8Wrapper::_Get_D3D_Device8()->SetPixelShaderConstant(2,   D3DXVECTOR4(150.0f/255.0f, 150.0f/255.0f, 150.0f/255.0f, 0.0f), 1);
		DX8Wrapper::_Get_D3D_Device8()->SetPixelShaderConstant(3,   D3DXVECTOR4((765.0f/450.0f)/3, (765.0f/450.0f)/3, (765.0f/450.0f)/3, 1.0f), 1);
		DX8Wrapper::_Get_D3D_Device8()->SetPixelShaderConstant(4,   D3DXVECTOR4(0.5f, 0.5f, 0.5f, 0), 1);
		DX8Wrapper::_Get_D3D_Device8()->SetPixelShaderConstant(5,   D3DXVECTOR4((60.0f)/255.0f, (60.0f)/255.0f, (60.0f)/255.0f, 0), 1);
		DX8Wrapper::_Get_D3D_Device8()->SetPixelShaderConstant(6,   D3DXVECTOR4((157.0f)/255.0f, (157.0f)/255.0f, (157.0f)/255.0f, 0), 1);
		DX8Wrapper::_Get_D3D_Device8()->SetPixelShaderConstant(7,   D3DXVECTOR4((30.0f)/255.0f, (30.0f)/255.0f, (30.0f)/255.0f, 0), 1);
*/
		return true;
	}
	return false;
}

void ScreenBWFilter::reset(void)
{
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0,NULL);	//previously rendered frame inside this texture
	DX8Wrapper::_Get_D3D_Device8()->SetPixelShader(0);	//turn off pixel shader
	DX8Wrapper::Invalidate_Cached_Render_States();
}

Int ScreenBWFilter::shutdown(void)
{
	if (m_dwBWPixelShader)
		DX8Wrapper::_Get_D3D_Device8()->DeletePixelShader(m_dwBWPixelShader);

	m_dwBWPixelShader=NULL;

	return TRUE;
}

/**Alternate version of the above filter which does not require pixel shaders - good for older cards*/
Int ScreenBWFilterDOT3::init(void)
{
	Int res;

	m_curFadeFrame = 0;

	if (!W3DShaderManager::canRenderToTexture()) {
		// Have to be able to render to texture.
		return false;
	}

	if ((res=W3DShaderManager::getChipset()) != 0)
	{
			W3DFilters[FT_VIEW_BW_FILTER]=&screenBWFilterDOT3;
			return TRUE;
	}
	return FALSE;
}

Bool ScreenBWFilterDOT3::preRender(Bool &skipRender, CustomScenePassModes &scenePassMode)
{
	skipRender = false;
	W3DShaderManager::startRenderToTexture();
	return true;
}

Bool ScreenBWFilterDOT3::postRender(enum FilterModes mode, Coord2D &scrollDelta,Bool &doExtraRender)
{
	IDirect3DTexture8 * tex =	W3DShaderManager::endRenderToTexture();
	DEBUG_ASSERTCRASH(tex, ("Require rendered texture."));
	if (!tex) return false;
	if (!set(mode)) return false;

	LPDIRECT3DDEVICE8 pDev=DX8Wrapper::_Get_D3D_Device8();

	struct _TRANS_LIT_TEX_VERTEX {
		D3DXVECTOR4 p;
		DWORD color;   // diffuse color    
		float	u;
		float	v;
	} v[4];

	Int xpos, ypos, width, height;

	TheTacticalView->getOrigin(&xpos,&ypos);
	width=TheTacticalView->getWidth();
	height=TheTacticalView->getHeight();

	//bottom right
	v[0].p = D3DXVECTOR4( xpos+width-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[0].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[0].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	//top right
	v[1].p = D3DXVECTOR4( xpos+width-0.5f, ypos-0.5f, 0.0f, 1.0f );
	v[1].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[1].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	//bottom left
	v[2].p = D3DXVECTOR4(  xpos-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[2].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[2].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	//top left
	v[3].p = D3DXVECTOR4(  xpos-0.5f,  ypos-0.5f, 0.0f, 1.0f );
	v[3].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[3].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	
	DWORD currentFade=(((Int)((1.0f-m_curFadeValue) * 255.0f))<<24) | 0x00ffffff;	//store alpha value

	v[0].color = currentFade;
	v[1].color = currentFade;
	v[2].color = currentFade;
	v[3].color = currentFade;

	//draw polygons like this is very inefficient but for only 2 triangles, it's
	//not worth bothering with index/vertex buffers.
	pDev->SetVertexShader(D3DFVF_XYZRHW | D3DFVF_DIFFUSE | D3DFVF_TEX1);

	//Draw B&W version first
	if (DX8Caps::Support_DOT3())
	{	//Override W3D states with customizations for grayscale
		DX8Wrapper::Set_DX8_Render_State(D3DRS_TEXTUREFACTOR, 0x80A5CA8E);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG0, D3DTA_TFACTOR | D3DTA_ALPHAREPLICATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG2, D3DTA_TFACTOR | D3DTA_ALPHAREPLICATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLOROP, D3DTOP_MULTIPLYADD);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG1, D3DTA_CURRENT);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG2, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP, D3DTOP_DOTPRODUCT3);
	}
	else
	{	//doesn't have DOT3 blend mode so fake it another way.
		DX8Wrapper::Set_DX8_Render_State(D3DRS_TEXTUREFACTOR, 0x60606060);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG2, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLOROP, D3DTOP_MODULATE);
	}

	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0,tex);	//previously rendered frame inside this texture

	pDev->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, v, sizeof(_TRANS_LIT_TEX_VERTEX));

	//Draw normal view blended by current fade level
	ShaderClass::Invalidate();	//reset DOT3 blend from above.
	ShaderClass shader=ShaderClass::_PresetAlphaShader;
	shader.Set_Depth_Compare(ShaderClass::PASS_ALWAYS);
	DX8Wrapper::Set_Shader(shader);
	DX8Wrapper::Apply_Render_State_Changes();	//force update of view and projection matrices
	//replace texture alpha with vertex alpha
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG2);

	pDev->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, v, sizeof(_TRANS_LIT_TEX_VERTEX));

	reset();
	return true;
}

Int ScreenBWFilterDOT3::set(enum FilterModes mode)
{
	if (mode > FM_NULL_MODE)
	{	//rendering a quad with redirected rendering surface tinted by pixel shader

		if (m_fadeDirection > 0)
		{	//turning effect on
			m_curFadeFrame++;
			Int fade = m_curFadeFrame;

			if (fade<m_fadeFrames)
			{
				m_curFadeValue = (Real)fade/(Real)m_fadeFrames;
			}
			else
			{
				m_curFadeFrame = 0;
				m_curFadeValue = 1.0f;
				m_fadeDirection = 0;
			}
		}
		else
		if (m_fadeDirection < 0)
		{	//turning effect off
			m_curFadeFrame++;
			Int fade = m_curFadeFrame;
			if (fade<m_fadeFrames)
			{
				m_curFadeValue = 1.0f - (Real)fade/(Real)m_fadeFrames;
			}
			else
			{	m_curFadeValue = 0.0f;
				TheTacticalView->setViewFilterMode(FM_NULL_MODE);
				TheTacticalView->setViewFilter(FT_NULL_FILTER);
				m_curFadeFrame = 0;
				m_fadeDirection = 0;
			}
		}

		VertexMaterialClass *vmat=VertexMaterialClass::Get_Preset(VertexMaterialClass::PRELIT_DIFFUSE);
		DX8Wrapper::Set_Material(vmat);
		REF_PTR_RELEASE(vmat);	//no need to keep a reference since it's a preset.
		DX8Wrapper::Set_Shader(ShaderClass::_PresetOpaqueShader);
		DX8Wrapper::Set_Texture(0,NULL);
		DX8Wrapper::Apply_Render_State_Changes();	//force update of view and projection matrices

		DX8Wrapper::Set_DX8_Render_State(D3DRS_ZFUNC,D3DCMP_ALWAYS);
		DX8Wrapper::Set_DX8_Render_State(D3DRS_ZWRITEENABLE,FALSE);
		DX8Wrapper::Apply_Render_State_Changes();	//force update of view and projection matrices

		return true;
	}
	return false;
}

void ScreenBWFilterDOT3::reset(void)
{
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0,NULL);	//previously rendered frame inside this texture
	DX8Wrapper::Invalidate_Cached_Render_States();
}

Int ScreenBWFilterDOT3::shutdown(void)
{
	return TRUE;
}

/*=========  ScreenCrossFadeFilter	=============================================================*/
///Fades screen between 2 different views of the scene with both being visible at once.

Int ScreenCrossFadeFilter::m_fadeFrames;
Int ScreenCrossFadeFilter::m_curFadeFrame;
Real ScreenCrossFadeFilter::m_curFadeValue;
Int ScreenCrossFadeFilter::m_fadeDirection;
TextureClass *ScreenCrossFadeFilter::m_fadePatternTexture=NULL;
Bool ScreenCrossFadeFilter::m_skipRender = FALSE;

ScreenCrossFadeFilter screenCrossFadeFilter;

///List of different BW shader implementations in order of preference
///@todo: Add a version that doesn't require pixel shader
W3DFilterInterface *ScreenCrossFadeFilterList[]=
{
	&screenCrossFadeFilter,
	NULL
};

Int ScreenCrossFadeFilter::init(void)
{
	if (!TheDisplay)
		return FALSE;	//effect is useless without a view so no point initializing for the WB, etc.

	m_curFadeFrame = 0;

	if (!W3DShaderManager::canRenderToTexture())
		// Have to be able to render to texture.
		return FALSE;

	//Load an alpha mask texture that will mix foreground/background views.
	m_fadePatternTexture=WW3DAssetManager::Get_Instance()->Get_Texture("exmask_g.tga");
	if (!m_fadePatternTexture)
		return FALSE;
	m_fadePatternTexture->Set_U_Addr_Mode(TextureClass::TEXTURE_ADDRESS_CLAMP);
	m_fadePatternTexture->Set_V_Addr_Mode(TextureClass::TEXTURE_ADDRESS_CLAMP);
	m_fadePatternTexture->Set_Mip_Mapping(TextureClass::FILTER_TYPE_NONE);

	W3DFilters[FT_VIEW_CROSSFADE]=&screenCrossFadeFilter;

	return TRUE;
}

Bool ScreenCrossFadeFilter::updateFadeLevel(void)
{
	if (m_fadeDirection > 0)
	{	//turning effect on
		m_curFadeFrame++;
		Int fade = m_curFadeFrame;

		if (fade<m_fadeFrames)
		{
			m_curFadeValue = (Real)fade/(Real)m_fadeFrames;
		}
		else
		{
			m_curFadeFrame = 0;
			m_curFadeValue = 1.0f;
			m_fadeDirection = 0;
			return false;
		}
	}
	else
	if (m_fadeDirection < 0)
	{	//turning effect off
		Int fade = m_curFadeFrame;
		if (fade<m_fadeFrames)
		{
			m_curFadeValue = 1.0f - (Real)fade/(Real)m_fadeFrames;
			m_curFadeFrame++;
		}
		else
		{	m_curFadeValue = 0.0f;
			TheTacticalView->setViewFilterMode(FM_NULL_MODE);
			TheTacticalView->setViewFilter(FT_NULL_FILTER);
			m_curFadeFrame = 0;
			m_fadeDirection = 0;
			return false;
		}
	}
	return true;
}

Bool ScreenCrossFadeFilter::preRender(Bool &skipRender, CustomScenePassModes &scenePassMode)
{
	if (updateFadeLevel())
	{	//if fade has not completed
		W3DShaderManager::startRenderToTexture();
		scenePassMode=SCENE_PASS_ALPHA_MASK;
		skipRender = false;
		m_skipRender=true;	//tell the postRender function not to draw into framebuffer yet.
		return true;
	}
	//fade must have completed
	return true;
}

Bool ScreenCrossFadeFilter::postRender(enum FilterModes mode, Coord2D &scrollDelta,Bool &doExtraRender)
{
	IDirect3DTexture8 * tex;

	if (m_skipRender)
	{
		//don't render anything to frame buffer because we still need to draw the new scene
		//that we're fading into.  Okay to render on the next call.
		m_skipRender = false;
		doExtraRender = TRUE;
		tex =	W3DShaderManager::endRenderToTexture();
		return true;	
	}

	tex=W3DShaderManager::getRenderTexture();

	DEBUG_ASSERTCRASH(tex, ("Require last rendered texture."));
	if (!tex) return false;
	if (!set(mode)) return false;

	LPDIRECT3DDEVICE8 pDev=DX8Wrapper::_Get_D3D_Device8();

	struct _TRANS_LIT_TEX_VERTEX {
		D3DXVECTOR4 p;
		DWORD color;   // diffuse color    
		float	u;
		float	v;
		float	u1;
		float	v1;
	} v[4];

	Int xpos, ypos, width, height;
	Real radius = 0.0f;

	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0,tex);	//previously rendered frame inside this texture
	if (mode == FM_VIEW_CROSSFADE_CIRCLE)
	{	DX8Wrapper::_Get_D3D_Device8()->SetTexture(1,m_fadePatternTexture->Peek_DX8_Texture());
		//Use the current fade level to scale the mask texture, for other modes the texture
		//comes pre-scaled so doesn't require uv scaling.
		radius = (1.0f-m_curFadeValue)*2.0f;
		if (radius <= 0)
			radius = 0.01f;
		radius = 0.5f/radius;
	}

	TheTacticalView->getOrigin(&xpos,&ypos);
	width=TheTacticalView->getWidth();
	height=TheTacticalView->getHeight();

/*	Real radius = (1.0f-m_curFadeValue);
	if (radius <= 0)
		radius = 0.01f;
	radius = 25.0f-radius*24.75f;
*/
	//bottom right
	v[0].p = D3DXVECTOR4( xpos+width-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[0].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[0].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	v[0].u1 = 0.5f+radius;	v[0].v1 = 0.5f+radius;
	//top right
	v[1].p = D3DXVECTOR4( xpos+width-0.5f, ypos-0.5f, 0.0f, 1.0f );
	v[1].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[1].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	v[1].u1 = 0.5f+radius;	v[1].v1 = 0.5f-radius;
	//bottom left
	v[2].p = D3DXVECTOR4(  xpos-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[2].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[2].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	v[2].u1 = 0.5f-radius;	v[2].v1 = 0.5f+radius;
	//top left
	v[3].p = D3DXVECTOR4(  xpos-0.5f,  ypos-0.5f, 0.0f, 1.0f );
	v[3].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[3].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	v[3].u1 = 0.5f-radius;	v[3].v1 = 0.5f-radius;

	DWORD diffuse = 0xffffffff;//((Int)((m_curFadeValue) * 255.0f) << 24) | 0x00ffffff;	//store alpha value in vertex diffuse

	v[0].color = diffuse;
	v[1].color = diffuse;
	v[2].color = diffuse;
	v[3].color = diffuse;

	//draw polygons like this is very inefficient but for only 2 triangles, it's
	//not worth bothering with index/vertex buffers.
	pDev->SetVertexShader(D3DFVF_XYZRHW | D3DFVF_DIFFUSE | D3DFVF_TEX2);

//		m_pDev->SetTextureStageState(0,D3DTSS_MAGFILTER,D3DTEXF_POINT); 
//		m_pDev->SetTextureStageState(0,D3DTSS_MINFILTER,D3DTEXF_POINT); 

	pDev->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, v, sizeof(_TRANS_LIT_TEX_VERTEX));

	reset();
	return true;
}

Int ScreenCrossFadeFilter::set(enum FilterModes mode)
{
	if (mode > FM_NULL_MODE)
	{	//rendering a quad with redirected rendering surface
		VertexMaterialClass *vmat=VertexMaterialClass::Get_Preset(VertexMaterialClass::PRELIT_DIFFUSE);
		DX8Wrapper::Set_Material(vmat);
		REF_PTR_RELEASE(vmat);	//no need to keep a reference since it's a preset.
		DX8Wrapper::Set_Shader(ShaderClass::_PresetAlphaShader);
		DX8Wrapper::Set_Texture(0,NULL);
		DX8Wrapper::Set_Texture(1,NULL);
		DX8Wrapper::Apply_Render_State_Changes();	//force update of view and projection matrices

		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSU, D3DTADDRESS_CLAMP);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSV, D3DTADDRESS_CLAMP);

		if (mode == FM_VIEW_CROSSFADE_CIRCLE)
		{	//cross-fading using circle mask stored in stage 1
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG1, D3DTA_TEXTURE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG2, D3DTA_CURRENT );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP,   D3DTOP_MODULATE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAARG2, D3DTA_CURRENT );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_MODULATE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXCOORDINDEX, 1 );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ADDRESSU, D3DTADDRESS_CLAMP);
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ADDRESSV, D3DTADDRESS_CLAMP);
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_MIPFILTER, D3DTEXF_NONE);
		}

		DX8Wrapper::Set_DX8_Render_State(D3DRS_ZFUNC,D3DCMP_ALWAYS);
		DX8Wrapper::Set_DX8_Render_State(D3DRS_ZWRITEENABLE,FALSE);

		return true;
	}
	return false;
}

void ScreenCrossFadeFilter::reset(void)
{
	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP,   D3DTOP_DISABLE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0,NULL);	//previously rendered frame inside this texture
	DX8Wrapper::Invalidate_Cached_Render_States();
}

Int ScreenCrossFadeFilter::shutdown(void)
{
	REF_PTR_RELEASE(m_fadePatternTexture);

	return TRUE;
}

/*=========  ScreenMotionBlurFilter	=============================================================*/
///applies motion blur to viewport.

ScreenMotionBlurFilter screenMotionBlurFilter;

Coord3D ScreenMotionBlurFilter::m_zoomToPos;
Bool ScreenMotionBlurFilter::m_zoomToValid = false;

ScreenMotionBlurFilter::ScreenMotionBlurFilter():
m_decrement(false),
m_maxCount(0),
m_lastFrame(0), 
m_skipRender(false)
{
}
///List of different motion blur implementations in order of preference
W3DFilterInterface *ScreenMotionBlurFilterList[]=
{
	&screenMotionBlurFilter,
	NULL
};

Int ScreenMotionBlurFilter::init(void)
{
	if (!W3DShaderManager::canRenderToTexture()) {
		// Have to be able to render to texture.
		return false;
	}
	W3DFilters[FT_VIEW_MOTION_BLUR_FILTER]=this;
	return true;
}

Bool ScreenMotionBlurFilter::preRender(Bool &skipRender, CustomScenePassModes &scenePassMode)
{
	skipRender = m_skipRender;
	W3DShaderManager::startRenderToTexture();
	return true;
}

Bool ScreenMotionBlurFilter::postRender(enum FilterModes mode, Coord2D &scrollDelta,Bool &doExtraRender)
{
	IDirect3DTexture8 * tex =	W3DShaderManager::endRenderToTexture();
	DEBUG_ASSERTCRASH(tex, ("Require rendered texture."));
	if (!tex) return false;
	if (!set(mode)) return false;

	LPDIRECT3DDEVICE8 pDev=DX8Wrapper::_Get_D3D_Device8();

	Bool continueEffect = true;
	struct _TRANS_LIT_TEX_VERTEX {
		D3DXVECTOR4 p;
		DWORD color;   // diffuse color    
		float	u;
		float	v;
	} v[4];

	Int xpos, ypos, width, height;

	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0,tex);	//previously rendered frame inside this texture
	TheTacticalView->getOrigin(&xpos,&ypos);
	width=TheTacticalView->getWidth();
	height=TheTacticalView->getHeight();

	//bottom right
	v[0].p = D3DXVECTOR4( xpos+width-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[0].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[0].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	//top right
	v[1].p = D3DXVECTOR4( xpos+width-0.5f, ypos-0.5f, 0.0f, 1.0f );
	v[1].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[1].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	//bottom left
	v[2].p = D3DXVECTOR4(  xpos-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[2].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[2].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	//top left
	v[3].p = D3DXVECTOR4(  xpos-0.5f,  ypos-0.5f, 0.0f, 1.0f );
	v[3].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[3].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	v[0].color = 0xffffffff;
	v[1].color = 0xffffffff;
	v[2].color = 0xffffffff;
	v[3].color = 0xffffffff;


	if (m_additive) {
		DX8Wrapper::Set_DX8_Render_State(D3DRS_SRCBLEND,D3DBLEND_SRCALPHA);
		DX8Wrapper::Set_DX8_Render_State(D3DRS_DESTBLEND,D3DBLEND_ONE);
	} else { 
		DX8Wrapper::Set_DX8_Render_State(D3DRS_SRCBLEND,D3DBLEND_SRCALPHA);
		DX8Wrapper::Set_DX8_Render_State(D3DRS_DESTBLEND,D3DBLEND_INVSRCALPHA);
	}
	DX8Wrapper::Set_DX8_Render_State(D3DRS_ALPHABLENDENABLE,false);
	//draw polygons like this is very inefficient but for only 2 triangles, it's
	//not worth bothering with index/vertex buffers.
	DX8Wrapper::Apply_Render_State_Changes();
	pDev->SetVertexShader(D3DFVF_XYZRHW | D3DFVF_DIFFUSE | D3DFVF_TEX1);

	Coord2D center;
	center.x = 0.5f;
	center.y = 0.5f;
	Bool pan = false;
	if (mode>=FM_VIEW_MB_PAN_ALPHA) {
		Real len = sqrt(scrollDelta.x*scrollDelta.x + scrollDelta.y*scrollDelta.y);
		//center.x += 0.5f * (scrollDelta.x/len);
		center.y -= 0.5f; // * (scrollDelta.y/len);
		m_decrement = false;
		m_maxCount = (len*200*m_panFactor/(Real)DEFAULT_PAN_FACTOR);
		if (m_maxCount<m_panFactor/2) 
			m_maxCount = m_panFactor/2;
		if (m_maxCount>m_panFactor) 
			m_maxCount=m_panFactor;
		pan = true;
		m_priorDelta = scrollDelta;
	} else if (mode == FM_VIEW_MB_END_PAN_ALPHA) {
		Real len = sqrt(m_priorDelta.x*m_priorDelta.x + m_priorDelta.y*m_priorDelta.y);
		center.x += 0.5f * (m_priorDelta.x/len);
		center.y -= 0.5f * (m_priorDelta.y/len);
		m_decrement = false;
		m_maxCount--;
		if (m_maxCount<2) {
			continueEffect = false;
		}
		pan = true;
	}


	m_skipRender = false;
	if (!pan && m_lastFrame != TheGameLogic->getFrame()) {
		if (m_decrement) {
			m_maxCount-=COUNT_STEP;
			if (m_maxCount<1) {
				m_decrement = false;
				continueEffect = false;
			}	else {
				m_skipRender = true;
			}
		} else {
			m_maxCount+=COUNT_STEP;
			if (m_maxCount>=MAX_COUNT) {
				m_decrement = true;
				if (m_doZoomTo && m_zoomToValid) {
					TheTacticalView->lookAt(&m_zoomToPos);
				} else {
					continueEffect = false;
				}
			}	else {
				m_skipRender = true;
			}
		}
	}
	Int	 i, j;
	if (!pan) {
		for (i=0; i<4; i++) {
			Real factor = 1.0f - (m_maxCount/(Real)MAX_COUNT)*0.90f;
			factor = sqrt(factor);
			v[i].u = ((v[i].u-center.x)*factor) + center.x;
			v[i].v = ((v[i].v-center.y)*factor) + center.y;
		}
	}
	pDev->SetTextureStageState(0,D3DTSS_ALPHAARG1, D3DTA_CURRENT);
	pDev->SetTextureStageState(0,D3DTSS_ALPHAARG2, D3DTA_TEXTURE);
	pDev->SetTextureStageState(0,D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);
	pDev->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, v, sizeof(_TRANS_LIT_TEX_VERTEX));
	DX8Wrapper::Set_DX8_Render_State(D3DRS_ALPHABLENDENABLE,true);

	DX8Wrapper::Apply_Render_State_Changes();
	{
		Int limit = m_maxCount;
		if (m_maxCount>30) limit = 30;
		for (j=0; j<limit; j++) {
			for (i=0; i<4; i++) {
				Real factor = 0.99f;
				if (m_additive) factor = 0.98f;
				Int alpha = 0x15;
				if (m_additive) {
					alpha = 0x09;
					if (m_maxCount>limit) {
						alpha += (m_maxCount-limit)/5;
					}
					if (m_maxCount==MAX_COUNT) alpha += 60;
				}
				v[i].color = (alpha<<24)|0x00ffffff; // 
				if (pan) {
					v[i].u = ((v[i].u-center.x)*(factor+.006)) + center.x;
					v[i].v = ((v[i].v-center.y)*factor) + center.y;
				} else {
					v[i].u = ((v[i].u-center.x)*factor) + center.x;
					v[i].v = ((v[i].v-center.y)*factor) + center.y;
				}
			}
			pDev->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, v, sizeof(_TRANS_LIT_TEX_VERTEX));

		}
	}
	m_lastFrame = TheGameLogic->getFrame();
	if (pan){
		m_skipRender = false;
	}
	reset();
	if (!continueEffect) {
		m_zoomToValid = false;
	}
	return continueEffect;
}

Bool ScreenMotionBlurFilter::setup(enum FilterModes mode)
{

	m_additive = false;

	if (mode == FM_VIEW_MB_IN_AND_OUT_SATURATE ||
			mode == FM_VIEW_MB_IN_SATURATE ||
			mode == FM_VIEW_MB_OUT_SATURATE) {
		m_additive = true;
	}

	m_doZoomTo = false;
	if (mode == FM_VIEW_MB_IN_AND_OUT_SATURATE ||
			mode == FM_VIEW_MB_IN_AND_OUT_ALPHA ) {
		m_doZoomTo = true;
	}
	if (mode >= FM_VIEW_MB_PAN_ALPHA)	{
		m_panFactor = (int)mode - FM_VIEW_MB_PAN_ALPHA;
		if (m_panFactor<1) m_panFactor = DEFAULT_PAN_FACTOR;
	}
	m_skipRender = false;
	if (mode != FM_VIEW_MB_END_PAN_ALPHA) 
		m_maxCount = 0;
	m_decrement = false;
	m_skipRender = false;
	switch (mode) {
		case FM_VIEW_MB_OUT_SATURATE:
		case FM_VIEW_MB_OUT_ALPHA:
			m_maxCount = MAX_COUNT;
			m_decrement = TRUE;
			break;
	}
	return true;
}

Int ScreenMotionBlurFilter::set(enum FilterModes mode)
{
	if (mode > FM_NULL_MODE)
	{	//rendering a quad with redirected rendering surface motion blurred

		VertexMaterialClass *vmat=VertexMaterialClass::Get_Preset(VertexMaterialClass::PRELIT_DIFFUSE);
		DX8Wrapper::Set_Material(vmat);
		REF_PTR_RELEASE(vmat);	//no need to keep a reference since it's a preset.
		DX8Wrapper::Set_Shader(ShaderClass::_PresetOpaqueShader);
		DX8Wrapper::Set_Texture(0,NULL);
		DX8Wrapper::Set_Texture(1,NULL);
		DX8Wrapper::Apply_Render_State_Changes();	//force update of view and projection matrices

		DX8Wrapper::Set_DX8_Render_State(D3DRS_ZFUNC,D3DCMP_ALWAYS);
		DX8Wrapper::Set_DX8_Render_State(D3DRS_ZWRITEENABLE,FALSE);
		DX8Wrapper::Apply_Render_State_Changes();	//force update of view and projection matrices
	}
	return TRUE;
}

void ScreenMotionBlurFilter::reset(void)
{
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0,NULL);	//previously rendered frame inside this texture
	DX8Wrapper::Invalidate_Cached_Render_States();
}

Int ScreenMotionBlurFilter::shutdown(void)
{
	return TRUE;
}

/*===========================================================================================*/
/*=========      Shroud Shaders	=============================================================*/
/*===========================================================================================*/

///Shroud layer rendering shader
class ShroudTextureShader : public W3DShaderInterface
{
	virtual Int set(Int pass);		///<setup shader for the specified rendering pass.
	virtual Int init(void);			///<perform any one time initialization and validation
	virtual void reset(void);		///<do any custom resetting necessary to bring W3D in sync.
	Int m_stageOfSet;
} shroudTextureShader;

///List of different shroud shader implementations in order of preference
W3DShaderInterface *ShroudShaderList[]=
{
	&shroudTextureShader,
	NULL
};

//#define SHROUD_STRETCH_FACTOR	(1.0f/MAP_XY_FACTOR)	//1 texel per heightmap cell width

Int ShroudTextureShader::init(void)
{
	W3DShaders[W3DShaderManager::ST_SHROUD_TEXTURE]=&shroudTextureShader;
	W3DShadersPassCount[W3DShaderManager::ST_SHROUD_TEXTURE]=1;

	return TRUE;
}

//Setup a texture projection in the given stage that applies our shroud.
Int ShroudTextureShader::set(Int stage)
{
	//force WW3D2 system to set it's states so it won't later overwrite our custom settings.
	VertexMaterialClass *vmat=VertexMaterialClass::Get_Preset(VertexMaterialClass::PRELIT_DIFFUSE);
	DX8Wrapper::Set_Material(vmat);
	REF_PTR_RELEASE(vmat);	//no need to keep a reference since it's a preset.
	if (stage < 2)
		DX8Wrapper::Set_Texture(stage, W3DShaderManager::getShaderTexture(0));
	else	//stages larger than 1 are not supported by W3D so set them directly
		DX8Wrapper::Set_DX8_Texture(stage, W3DShaderManager::getShaderTexture(0)->Peek_DX8_Texture());

	if (stage == 0)
	{
#if defined(_DEBUG) || defined(_INTERNAL)
	if (TheGlobalData && TheGlobalData->m_fogOfWarOn)
		DX8Wrapper::Set_Shader(ShaderClass::_PresetAlphaSpriteShader);
	else
		DX8Wrapper::Set_Shader(ShaderClass::_PresetMultiplicativeSpriteShader);
#else
	DX8Wrapper::Set_Shader(ShaderClass::_PresetMultiplicativeSpriteShader);
#endif
	}
	DX8Wrapper::Apply_Render_State_Changes();

	DX8Wrapper::Set_DX8_Texture_Stage_State(stage,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
	DX8Wrapper::Set_DX8_Texture_Stage_State(stage,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	
	DX8Wrapper::Set_DX8_Render_State(D3DRS_ZFUNC,D3DCMP_EQUAL);

	//We need to scale so shroud texel stretches over one full terrain cell.  Each texel
	//is 1/128 the size of full texture. (assuming 128x128 vid-mem texture).
	W3DShroud *shroud;
	if ((shroud=TheTerrainRenderObject->getShroud()) != 0)
	{	///@todo: All this code really only need to be done once per camera/view.  Find a way to optimize it out.
		D3DXMATRIX inv;
		float det;

		Matrix4 curView;
		DX8Wrapper::_Get_DX8_Transform(D3DTS_VIEW, curView);

		D3DXMatrixInverse(&inv, &det, (D3DXMATRIX*)&curView);

		D3DXMATRIX scale,offset;

		//We need to make all world coordinates be relative to the heightmap data origin since that
		//is where the shroud begins.

		float xoffset = 0;
		float yoffset = 0;
		Real width=shroud->getCellWidth();
		Real height=shroud->getCellHeight();

		if (TheTerrainRenderObject->getMap())
		{	//subtract origin position from all coordinates.  Origin is shifted by 1 cell width/height to allow for unused border texels.
			xoffset = -(float)shroud->getDrawOriginX() + width;
			yoffset = -(float)shroud->getDrawOriginY() + height;
		}

		D3DXMatrixTranslation(&offset, xoffset, yoffset,0);

		width = 1.0f/(width*shroud->getTextureWidth());
		height = 1.0f/(height*shroud->getTextureHeight());
		D3DXMatrixScaling(&scale, width, height, 1);
		*((D3DXMATRIX *)&curView) = (inv * offset) * scale;
		DX8Wrapper::_Set_DX8_Transform((D3DTRANSFORMSTATETYPE )(D3DTS_TEXTURE0+stage), *((Matrix4*)&curView));
	}
	m_stageOfSet=stage;
	return TRUE;
}

void ShroudTextureShader::reset(void)
{
	if (m_stageOfSet < MAX_TEXTURE_STAGES)
		DX8Wrapper::Set_Texture(m_stageOfSet,NULL);
	DX8Wrapper::Set_DX8_Render_State(D3DRS_ZFUNC,D3DCMP_LESSEQUAL);
	DX8Wrapper::Set_DX8_Texture_Stage_State(m_stageOfSet,  D3DTSS_TEXCOORDINDEX, m_stageOfSet);
	DX8Wrapper::Set_DX8_Texture_Stage_State(m_stageOfSet,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);	
}

///Mask layer rendering shader
class MaskTextureShader : public W3DShaderInterface
{
	virtual Int set(Int pass);		///<setup shader for the specified rendering pass.
	virtual Int init(void);			///<perform any one time initialization and validation
	virtual void reset(void);		///<do any custom resetting necessary to bring W3D in sync.
} maskTextureShader;

///List of different shroud shader implementations in order of preference
W3DShaderInterface *MaskShaderList[]=
{
	&maskTextureShader,
	NULL
};

Int MaskTextureShader::init(void)
{
	W3DShaders[W3DShaderManager::ST_MASK_TEXTURE]=&maskTextureShader;
	W3DShadersPassCount[W3DShaderManager::ST_MASK_TEXTURE]=1;

	return TRUE;
}

Int MaskTextureShader::set(Int pass)
{
	Real fadeLevel=ScreenCrossFadeFilter::getCurrentFadeValue();

	//Use the current fade level to scale the mask texture
	Real radius = (1.0f-fadeLevel)*2.0f;
	if (radius <= 0)
		radius = 0.01f;
	radius = 0.5f/radius;

	//force WW3D2 system to set it's states so it won't later overwrite our custom settings.
	VertexMaterialClass *vmat=VertexMaterialClass::Get_Preset(VertexMaterialClass::PRELIT_DIFFUSE);
	DX8Wrapper::Set_Material(vmat);
	REF_PTR_RELEASE(vmat);	//no need to keep a reference since it's a preset.

	//For now we're always going to project the texture coming from the crossfade effect
	DX8Wrapper::Set_Texture(0, ScreenCrossFadeFilter::getCurrentMaskTexture());
	ShaderClass shader=ShaderClass::_PresetOpaqueShader;
	shader.Set_Primary_Gradient(ShaderClass::GRADIENT_DISABLE);
	DX8Wrapper::Set_Shader(shader);
	DX8Wrapper::Apply_Render_State_Changes();
	Matrix4 curView;
	DX8Wrapper::_Get_DX8_Transform(D3DTS_VIEW, curView);

	DX8Wrapper::Set_DX8_Texture_Stage_State(0,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
	DX8Wrapper::Set_DX8_Texture_Stage_State(0,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	

	D3DXMATRIX inv;
	float det;

	//Get inverse view matrix so we can transform camera space points back to world space
	D3DXMatrixInverse(&inv, &det, (D3DXMATRIX*)&curView);

	D3DXMATRIX scale,offset,offsetTextureCenter;
	Coord3D centerPos;

	//Find center of projection (this should be returned from some other filter, etc. but
	//for now assume terrain location at center of screen.
	if (TheTacticalView)
	{	Int xpos,ypos;

		TheTacticalView->getOrigin(&xpos,&ypos);

		ICoord2D screenPos;
		screenPos.x=(Real)TheTacticalView->getWidth()*0.5f;
		screenPos.y=(Real)TheTacticalView->getHeight()*0.5f;
		TheTacticalView->screenToTerrain(&screenPos,&centerPos);
	}

	D3DXMatrixTranslation(&offset, -centerPos.x, -centerPos.y,0);

	D3DXMatrixTranslation(&offsetTextureCenter, 0.5f, 0.5f, 0);	//shift coordinates so center of projection falls at uv 0.5,0.5

	Real worldTexelWidth=(1.0f-fadeLevel)*25.0f;	//9 worked well for circle but weird shape requires more stretch to cover.
	Real worldTexelHeight=(1.0f-fadeLevel)*25.0f;

	///@todo: Fix this to work with non 128x128 textures.
	if (worldTexelWidth != 0 && worldTexelHeight != 0)
	{	Real widthScale = 1.0f/(worldTexelWidth*128.0f);
		Real heightScale = 1.0f/(worldTexelHeight*128.0f);
		D3DXMatrixScaling(&scale, widthScale, heightScale, 1);
		*((D3DXMATRIX *)&curView) = ((inv * offset) * scale)*offsetTextureCenter;
	}
	else
	{	D3DXMatrixScaling(&scale, 0, 0, 1);	//scaling by 0 will set uv coordinates to 0,0
		*((D3DXMATRIX *)&curView) = ((inv * offset) * scale);
	}

	DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE0, *((Matrix4*)&curView));

	return TRUE;
}

void MaskTextureShader::reset(void)
{
	DX8Wrapper::Set_Texture(0,NULL);
	DX8Wrapper::Set_DX8_Texture_Stage_State(0,  D3DTSS_TEXCOORDINDEX, 0);
	DX8Wrapper::Set_DX8_Texture_Stage_State(0,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);	
}

/*===========================================================================================*/
/*=========      Terrain Shaders	=========================================================*/
/*===========================================================================================*/

///regular terrain shader that should work on all multi-texture video cards (slowest version)
class TerrainShader2Stage : public W3DShaderInterface
{
public:
	float m_xSlidePerSecond ;	 ///< How far the clouds move per second.
	float m_ySlidePerSecond ;	 ///< How far the clouds move per second.
	int	  m_curTick;
	float m_xOffset;
	float m_yOffset;
	virtual Int set(Int pass);		///<setup shader for the specified rendering pass.
	virtual Int init(void);			///<perform any one time initialization and validation
	virtual void reset(void);		///<do any custom resetting necessary to bring W3D in sync.
	void updateNoise1 (D3DXMATRIX *destMatrix,D3DXMATRIX *curViewInverse, Bool doUpdate=true);	///<generate the uv coordinates for Noise1 (i.e clouds)
	void updateNoise2 (D3DXMATRIX *destMatrix,D3DXMATRIX *curViewInverse, Bool doUpdate=true);	///<generate the uv coordinates for Noise2 (i.e lightmap)
} terrainShader2Stage;

///8 stage terrain shader which only works on certain Nvidia cards.
class TerrainShader8Stage : public W3DShaderInterface
{
	virtual Int set(Int pass);		///<setup shader for the specified rendering pass.
	virtual void reset(void);		///<do any custom resetting necessary to bring W3D in sync.
	virtual Int init(void);			///<perform any one time initialization and validation
} terrainShader8Stage;

//Offsets into constant register pool used by vertex shader
#define CV_WORLDVIEWPROJ_0	0	//4 vectors for transform of world->clip space.

///Pixel shader based terrain shader - fastest method for the newest cards.
class TerrainShaderPixelShader : public W3DShaderInterface
{
	DWORD					m_dwBasePixelShader;	///<handle to terrain D3D pixel shader
	DWORD					m_dwBaseNoise1PixelShader;	///<handle to terrain/single noise D3D pixel shader
	DWORD					m_dwBaseNoise2PixelShader;	///<handle to terrain/double noise D3D pixel shader

	virtual Int set(Int pass);		///<setup shader for the specified rendering pass.
	virtual void reset(void);		///<do any custom resetting necessary to bring W3D in sync.
	virtual Int init(void);			///<perform any one time initialization and validation
	virtual Int shutdown(void);			///<release resources used by shader
} terrainShaderPixelShader;

///List of different terrain shader implementations in order of preference
W3DShaderInterface *TerrainShaderList[]=
{
	&terrainShaderPixelShader,
	&terrainShader8Stage,
	&terrainShader2Stage,
	NULL
};

Int TerrainShader2Stage::init( void )
{
	//initialize settings for uv animated clouds
	m_xSlidePerSecond = -0.02f;	 
	m_ySlidePerSecond =  1.50f * m_xSlidePerSecond;
	m_curTick = 0;
	m_curTick = WW3D::Get_Sync_Time();//::GetTickCount();
	m_xOffset = 0;
	m_yOffset = 0;

	//no special device validation needed - anything in our min spec should handle this.

	W3DShaders[W3DShaderManager::ST_TERRAIN_BASE]=&terrainShader2Stage;
	W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE]=2;
	W3DShaders[W3DShaderManager::ST_TERRAIN_BASE_NOISE1]=&terrainShader2Stage;
	W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE_NOISE1]=3;
	W3DShaders[W3DShaderManager::ST_TERRAIN_BASE_NOISE2]=&terrainShader2Stage;
	W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE_NOISE2]=3;
	W3DShaders[W3DShaderManager::ST_TERRAIN_BASE_NOISE12]=&terrainShader2Stage;
	W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE_NOISE12]=3;

	return TRUE;
}

void TerrainShader2Stage::reset(void)
{
	ShaderClass::Invalidate();

	//Free references to textures
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, NULL);
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, NULL);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|0);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|1);
}

void TerrainShader2Stage::updateNoise1(D3DXMATRIX *destMatrix,D3DXMATRIX *curViewInverse, Bool doUpdate)
{
	#define STRETCH_FACTOR ((float)(1/(63.0*MAP_XY_FACTOR/2))) /* covers 63/2 tiles */

	D3DXMATRIX scale;

	D3DXMatrixScaling(&scale, STRETCH_FACTOR, STRETCH_FACTOR,1);
	*destMatrix = *curViewInverse * scale;

	D3DXMATRIX offset;

	Int delta = m_curTick;
	m_curTick = WW3D::Get_Sync_Time();//::GetTickCount();
	delta = m_curTick-delta;
	m_xOffset += m_xSlidePerSecond*delta/1000;
	m_yOffset += m_ySlidePerSecond*delta/1000;


	//m_xOffset += m_xSlidePerSecond*delta/500;
	//m_yOffset += m_ySlidePerSecond*delta/500;


	//m_yOffset = sinf( (float)m_curTick * 0.0001f );
	//m_xOffset = cosf( (float)m_curTick * 0.0001f );

	if (m_xOffset > 1) m_xOffset -= 1;
	if (m_yOffset > 1) m_yOffset -= 1;
	if (m_xOffset < -1) m_xOffset += 1;
	if (m_yOffset < -1) m_yOffset += 1;

	D3DXMatrixTranslation(&offset, m_xOffset, m_yOffset,0);
	*destMatrix *= offset;
}

void TerrainShader2Stage::updateNoise2(D3DXMATRIX *destMatrix,D3DXMATRIX *curViewInverse, Bool doUpdate)
{
			
	D3DXMATRIX scale;

	D3DXMatrixScaling(&scale, STRETCH_FACTOR, STRETCH_FACTOR,1);
	*destMatrix = *curViewInverse * scale;
}

Int TerrainShader2Stage::set(Int pass)																											  
{
	//force WW3D2 system to set it's states so it won't later overwrite our custom settings.
	DX8Wrapper::Apply_Render_State_Changes();

	if (TheGlobalData && TheGlobalData->m_bilinearTerrainTex || TheGlobalData->m_trilinearTerrainTex) {
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
	} else {
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MINFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MAGFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_POINT);
	}
	if (TheGlobalData && TheGlobalData->m_trilinearTerrainTex) {
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
	} else {
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MIPFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
	}

	switch (pass)
	{
		case 0:
			DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, W3DShaderManager::getShaderTexture(0)->Peek_DX8_Texture());
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSU, D3DTADDRESS_CLAMP);
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSV, D3DTADDRESS_CLAMP);

			// Modulate the diffuse color with the texture as lighting comes from diffuse.
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLOROP,   D3DTOP_MODULATE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP,   D3DTOP_DISABLE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, 0 );
			DX8Wrapper::Set_DX8_Render_State(D3DRS_ALPHABLENDENABLE,false);
			break;
		case 1:
			DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, W3DShaderManager::getShaderTexture(1)->Peek_DX8_Texture());
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSU, D3DTADDRESS_CLAMP);
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSV, D3DTADDRESS_CLAMP);

			// Modulate the diffuse color with the texture as lighting comes from diffuse.
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLOROP,   D3DTOP_MODULATE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAOP,   D3DTOP_MODULATE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, 1 );
			// Blend the result using the alpha. (came from diffuse mod texture)
			DX8Wrapper::Set_DX8_Render_State(D3DRS_ALPHABLENDENABLE,true);
			DX8Wrapper::Set_DX8_Render_State(D3DRS_SRCBLEND,D3DBLEND_SRCALPHA);
			DX8Wrapper::Set_DX8_Render_State(D3DRS_DESTBLEND,D3DBLEND_INVSRCALPHA);
			// Disable stage 2.
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP,   D3DTOP_DISABLE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );
			break;
		case 2:
			// Noise/cloud pass
			Matrix4 curView;
			DX8Wrapper::_Get_DX8_Transform(D3DTS_VIEW, curView);

			//these states apply to all noise/cloud combination passes
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLOROP,   D3DTOP_SELECTARG1 );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );

			DX8Wrapper::Set_DX8_Texture_Stage_State(0,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
			// Two output coordinates are used.
			DX8Wrapper::Set_DX8_Texture_Stage_State(0,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	
			DX8Wrapper::Set_DX8_Texture_Stage_State(0,  D3DTSS_ADDRESSU, D3DTADDRESS_WRAP);
			DX8Wrapper::Set_DX8_Texture_Stage_State(0,  D3DTSS_ADDRESSV, D3DTADDRESS_WRAP);

			//blend into frame buffer
			DX8Wrapper::Set_DX8_Render_State(D3DRS_ALPHABLENDENABLE,true);
			DX8Wrapper::Set_DX8_Render_State(D3DRS_SRCBLEND,D3DBLEND_DESTCOLOR);
			DX8Wrapper::Set_DX8_Render_State(D3DRS_DESTBLEND,D3DBLEND_ZERO);

			
			D3DXMATRIX inv;
			float det;

			D3DXMatrixInverse(&inv, &det, (D3DXMATRIX*)&curView);

			if (W3DShaderManager::getCurrentShader() == W3DShaderManager::ST_TERRAIN_BASE_NOISE12)
			{
				//setup cloud pass
				DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, W3DShaderManager::getShaderTexture(2)->Peek_DX8_Texture());

				updateNoise1(((D3DXMATRIX*)&curView),&inv);	//update curView with texture matrix
				DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE0, curView);
				//clouds always need bilinear filtering
				DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
				DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);

				//setup noise pass
				DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, W3DShaderManager::getShaderTexture(3)->Peek_DX8_Texture());

				updateNoise2(((D3DXMATRIX*)&curView),&inv);
				DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE1, curView);
				//noise always needs point/linear filtering.  Why point!?
				DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_POINT);
				DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);

				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG1, D3DTA_TEXTURE );
				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG2, D3DTA_CURRENT );
				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP,   D3DTOP_MODULATE );
				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );
				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
				// Two output coordinates are used.
				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	

				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ADDRESSU, D3DTADDRESS_WRAP);
				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ADDRESSV, D3DTADDRESS_WRAP);
			} //ST_TERRAIN_BASE_NOISE12
			else
			{	//only 1 noise or cloud texture
				// Now setup the texture pipeline.
				if (W3DShaderManager::getCurrentShader() == W3DShaderManager::ST_TERRAIN_BASE_NOISE1)
				{	//setup cloud pass
					DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, W3DShaderManager::getShaderTexture(2)->Peek_DX8_Texture());
					updateNoise1(((D3DXMATRIX*)&curView),&inv);	//update curView with texture matrix
					DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
					DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
				}
				else
				{
					//setup noise pass
					DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, W3DShaderManager::getShaderTexture(3)->Peek_DX8_Texture());
					updateNoise2(((D3DXMATRIX*)&curView),&inv);	//update curView with texture matrix
					DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_POINT);
					DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
				}

				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP,   D3DTOP_DISABLE );
				DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );
				DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE0, *((Matrix4*)&curView));
			}
			break;
	}

	return TRUE;
}

Int TerrainShader8Stage::init( void )
{	
	ChipsetType res;

	//this shader will also use the 2Stage shader for some of the passes so initialize it too.
	if (terrainShader2Stage.init() && (res=W3DShaderManager::getChipset()) >= DC_TNT && res <= DC_GEFORCE2)
	{
		W3DShaders[W3DShaderManager::ST_TERRAIN_BASE]=&terrainShader8Stage;
		W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE]=1;
		W3DShaders[W3DShaderManager::ST_TERRAIN_BASE_NOISE1]=&terrainShader8Stage;
		W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE_NOISE1]=2;
		W3DShaders[W3DShaderManager::ST_TERRAIN_BASE_NOISE2]=&terrainShader8Stage;
		W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE_NOISE2]=2;
		W3DShaders[W3DShaderManager::ST_TERRAIN_BASE_NOISE12]=&terrainShader8Stage;
		W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE_NOISE12]=2;
		return TRUE;
	}

	return FALSE;
}

Int TerrainShader8Stage::set(Int pass)
{
	if (pass == 0)
	{
		//force WW3D2 system to set it's states so it won't later overwrite our custom settings.
		DX8Wrapper::Apply_Render_State_Changes();

		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSU, D3DTADDRESS_CLAMP);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSV, D3DTADDRESS_CLAMP);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ADDRESSU, D3DTADDRESS_CLAMP);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ADDRESSV, D3DTADDRESS_CLAMP);

		if (TheGlobalData && TheGlobalData->m_bilinearTerrainTex || TheGlobalData->m_trilinearTerrainTex) {
			DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
			DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
			DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
			DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
		} else {
			DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MINFILTER, D3DTEXF_POINT);
			DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MAGFILTER, D3DTEXF_POINT);
			DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_POINT);
			DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_POINT);
		}
		if (TheGlobalData && TheGlobalData->m_trilinearTerrainTex) {
			DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
			DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
		} else {
			DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MIPFILTER, D3DTEXF_POINT);
			DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
		}
		
		DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, W3DShaderManager::getShaderTexture(0)->Peek_DX8_Texture());
		DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, W3DShaderManager::getShaderTexture(1)->Peek_DX8_Texture());

		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLOROP, D3DTOP_MODULATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, 0);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAOP,   D3DTOP_MODULATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE);

		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP, D3DTOP_ADD);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXCOORDINDEX, 1);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG1, D3DTA_DIFFUSE | D3DTA_COMPLEMENT | D3DTA_ALPHAREPLICATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_ADD);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAARG1, D3DTA_TFACTOR | D3DTA_COMPLEMENT);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAARG2, D3DTA_TFACTOR);

		DX8Wrapper::Set_DX8_Texture(2, NULL);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_COLOROP, D3DTOP_MODULATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_TEXCOORDINDEX, 2);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_COLORARG1, D3DTA_TEXTURE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_COLORARG2, D3DTA_TEXTURE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_ALPHAOP,   D3DTOP_MODULATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_ALPHAARG1, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_ALPHAARG2, D3DTA_TFACTOR);

		DX8Wrapper::Set_DX8_Texture(3, NULL);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_COLOROP, D3DTOP_SELECTARG1);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_TEXCOORDINDEX, 3);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_COLORARG1, D3DTA_DIFFUSE | 0 | D3DTA_ALPHAREPLICATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_ALPHAOP,   D3DTOP_SELECTARG1);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_ALPHAARG1, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_ALPHAARG2, D3DTA_TFACTOR);

		DX8Wrapper::Set_DX8_Texture(4, NULL);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 4, D3DTSS_COLOROP, D3DTOP_MODULATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 4, D3DTSS_TEXCOORDINDEX, 4);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 4, D3DTSS_COLORARG1, D3DTA_CURRENT);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 4, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 4, D3DTSS_ALPHAOP,   D3DTOP_MODULATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 4, D3DTSS_ALPHAARG1, D3DTA_CURRENT);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 4, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE);

		DX8Wrapper::Set_DX8_Texture(5, NULL);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 5, D3DTSS_COLOROP, D3DTOP_ADD);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 5, D3DTSS_TEXCOORDINDEX, 5);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 5, D3DTSS_COLORARG1, D3DTA_DIFFUSE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 5, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 5, D3DTSS_ALPHAOP,   D3DTOP_ADD);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 5, D3DTSS_ALPHAARG1, D3DTA_TFACTOR | D3DTA_COMPLEMENT);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 5, D3DTSS_ALPHAARG2, D3DTA_TFACTOR);

		DX8Wrapper::Set_DX8_Texture(6, NULL);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 6, D3DTSS_COLOROP, D3DTOP_MODULATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 6, D3DTSS_TEXCOORDINDEX, 6);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 6, D3DTSS_COLORARG1, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 6, D3DTSS_COLORARG2, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 6, D3DTSS_ALPHAOP,   D3DTOP_MODULATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 6, D3DTSS_ALPHAARG1, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 6, D3DTSS_ALPHAARG2, D3DTA_TFACTOR);

		DX8Wrapper::Set_DX8_Texture(7, NULL);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 7, D3DTSS_COLOROP, D3DTOP_SELECTARG1);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 7, D3DTSS_TEXCOORDINDEX, 7);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 7, D3DTSS_COLORARG1, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 7, D3DTSS_COLORARG2, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 7, D3DTSS_ALPHAOP,   D3DTOP_SELECTARG1);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 7, D3DTSS_ALPHAARG1, D3DTA_TFACTOR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 7, D3DTSS_ALPHAARG2, D3DTA_TFACTOR);
	}
	else
	{	//setup cloud noise/pass
		DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_COLOROP, D3DTOP_DISABLE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_ALPHAOP, D3DTOP_DISABLE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_COLOROP, D3DTOP_DISABLE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_ALPHAOP, D3DTOP_DISABLE);
		DX8Wrapper::Invalidate_Cached_Render_States();

		terrainShader2Stage.set(2);
	}
	return TRUE;
}

void TerrainShader8Stage::reset(void)
{
	DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_COLOROP, D3DTOP_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_ALPHAOP, D3DTOP_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_COLOROP, D3DTOP_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_ALPHAOP, D3DTOP_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 4, D3DTSS_COLOROP, D3DTOP_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 4, D3DTSS_ALPHAOP, D3DTOP_DISABLE);

	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, NULL);
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, NULL);
	DX8Wrapper::Invalidate_Cached_Render_States();
}

Int TerrainShaderPixelShader::shutdown(void)
{
	if (m_dwBasePixelShader)
		DX8Wrapper::_Get_D3D_Device8()->DeletePixelShader(m_dwBasePixelShader);

	if (m_dwBaseNoise1PixelShader)
		DX8Wrapper::_Get_D3D_Device8()->DeletePixelShader(m_dwBaseNoise1PixelShader);

	if (m_dwBaseNoise2PixelShader)
		DX8Wrapper::_Get_D3D_Device8()->DeletePixelShader(m_dwBaseNoise2PixelShader);

	m_dwBasePixelShader=NULL;
	m_dwBaseNoise1PixelShader=NULL;
	m_dwBaseNoise2PixelShader=NULL;

	return TRUE;
}

Int TerrainShaderPixelShader::init( void )
{	
	Int res;

	//this shader will also use the 2Stage shader for some of the passes so initialize it too.
	if (terrainShader2Stage.init() && (res=W3DShaderManager::getChipset()) >= DC_GENERIC_PIXEL_SHADER_1_1)
	{
		if (res >= DC_GENERIC_PIXEL_SHADER_1_1)
		{
			//this shader needs some assets that need to be loaded
			//shader decleration
			DWORD Declaration[]=
			{
				(D3DVSD_STREAM(0)),
				(D3DVSD_REG(0, D3DVSDT_FLOAT3)), // Position
				(D3DVSD_REG(1, D3DVSDT_D3DCOLOR)), // Diffuse
				(D3DVSD_REG(2, D3DVSDT_FLOAT2)), //  Texture Coordinates
				(D3DVSD_REG(3, D3DVSDT_FLOAT2)), //  Texture Coordinates
				(D3DVSD_END())
			};

			//base version which doesn't apply any noise textures.
			HRESULT hr = W3DShaderManager::LoadAndCreateD3DShader("shaders\\terrain.pso", &Declaration[0], 0, false, &m_dwBasePixelShader);
			if (FAILED(hr))
				return FALSE;

			//version which blends 1 noise texture.
			hr = W3DShaderManager::LoadAndCreateD3DShader("shaders\\terrainnoise.pso", &Declaration[0], 0, false, &m_dwBaseNoise1PixelShader);
			if (FAILED(hr))
				return FALSE;

			//version which blends 2 noise textures.
			hr = W3DShaderManager::LoadAndCreateD3DShader("shaders\\terrainnoise2.pso", &Declaration[0], 0, false, &m_dwBaseNoise2PixelShader);
			if (FAILED(hr))
				return FALSE;

			W3DShaders[W3DShaderManager::ST_TERRAIN_BASE]=&terrainShaderPixelShader;
			W3DShaders[W3DShaderManager::ST_TERRAIN_BASE_NOISE1]=&terrainShaderPixelShader;
			W3DShaders[W3DShaderManager::ST_TERRAIN_BASE_NOISE2]=&terrainShaderPixelShader;
			W3DShaders[W3DShaderManager::ST_TERRAIN_BASE_NOISE12]=&terrainShaderPixelShader;
			W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE]=1;
			W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE_NOISE1]=1;
			W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE_NOISE2]=1;
			W3DShadersPassCount[W3DShaderManager::ST_TERRAIN_BASE_NOISE12]=1;
			return TRUE;
		}
	}
	return FALSE;
}

Int TerrainShaderPixelShader::set(Int pass)
{
	//force WW3D2 system to set it's states so it won't later overwrite our custom settings.
	DX8Wrapper::Apply_Render_State_Changes();

	//setup base pass
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, W3DShaderManager::getShaderTexture(0)->Peek_DX8_Texture());
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, W3DShaderManager::getShaderTexture(1)->Peek_DX8_Texture());

	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSU, D3DTADDRESS_CLAMP);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSV, D3DTADDRESS_CLAMP);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ADDRESSU, D3DTADDRESS_CLAMP);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ADDRESSV, D3DTADDRESS_CLAMP);

	//tell pixel shader which UV set to use for each stage
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, 0 );
	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXCOORDINDEX, 1 );

	if (TheGlobalData && TheGlobalData->m_bilinearTerrainTex || TheGlobalData->m_trilinearTerrainTex) {
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
	} else {
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MINFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MAGFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_POINT);
	}
	if (TheGlobalData && TheGlobalData->m_trilinearTerrainTex) {
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
	} else {
		DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MIPFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
	}

	if (W3DShaderManager::getCurrentShader() >= W3DShaderManager::ST_TERRAIN_BASE_NOISE1)
	{	
		Matrix4 curView;
		DX8Wrapper::_Get_DX8_Transform(D3DTS_VIEW, curView);

		D3DXMATRIX inv;
		float det;
		D3DXMatrixInverse(&inv, &det, (D3DXMATRIX*)&curView);

		DX8Wrapper::Set_DX8_Texture_Stage_State(2,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
		// Two output coordinates are used.
		DX8Wrapper::Set_DX8_Texture_Stage_State(2,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	

		DX8Wrapper::Set_DX8_Texture_Stage_State(2,  D3DTSS_ADDRESSU, D3DTADDRESS_WRAP);
		DX8Wrapper::Set_DX8_Texture_Stage_State(2,  D3DTSS_ADDRESSV, D3DTADDRESS_WRAP);
		
		if (W3DShaderManager::getCurrentShader() == W3DShaderManager::ST_TERRAIN_BASE_NOISE12)
		{	//full shader
			DX8Wrapper::Set_DX8_Texture_Stage_State(3,  D3DTSS_ADDRESSU, D3DTADDRESS_WRAP);
			DX8Wrapper::Set_DX8_Texture_Stage_State(3,  D3DTSS_ADDRESSV, D3DTADDRESS_WRAP);
			DX8Wrapper::_Get_D3D_Device8()->SetTexture(2, W3DShaderManager::getShaderTexture(2)->Peek_DX8_Texture());
			DX8Wrapper::_Get_D3D_Device8()->SetTexture(3, W3DShaderManager::getShaderTexture(3)->Peek_DX8_Texture());
			DX8Wrapper::_Get_D3D_Device8()->SetPixelShader(m_dwBaseNoise2PixelShader);

			DX8Wrapper::Set_DX8_Texture_Stage_State(2, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
			DX8Wrapper::Set_DX8_Texture_Stage_State(2, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);

			DX8Wrapper::Set_DX8_Texture_Stage_State(3, D3DTSS_MINFILTER, D3DTEXF_POINT);
			DX8Wrapper::Set_DX8_Texture_Stage_State(3, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);

			terrainShader2Stage.updateNoise1(((D3DXMATRIX*)&curView),&inv);	//update curView with texture matrix
			DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE2, curView);

			terrainShader2Stage.updateNoise2(((D3DXMATRIX*)&curView),&inv);	//update curView with texture matrix
			DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE3, curView);

			DX8Wrapper::Set_DX8_Texture_Stage_State(3,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
			// Two output coordinates are used.
			DX8Wrapper::Set_DX8_Texture_Stage_State(3,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	
		}
		else
		{	//single noise texture shader
			DX8Wrapper::_Get_D3D_Device8()->SetPixelShader(m_dwBaseNoise1PixelShader);

			if (W3DShaderManager::getCurrentShader() == W3DShaderManager::ST_TERRAIN_BASE_NOISE1)
			{	//cloud map
				DX8Wrapper::_Get_D3D_Device8()->SetTexture(2, W3DShaderManager::getShaderTexture(2)->Peek_DX8_Texture());
				terrainShader2Stage.updateNoise1(((D3DXMATRIX*)&curView),&inv);	//update curView with texture matrix
				DX8Wrapper::Set_DX8_Texture_Stage_State(2, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
				DX8Wrapper::Set_DX8_Texture_Stage_State(2, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
			}
			else
			{	//light map
				DX8Wrapper::_Get_D3D_Device8()->SetTexture(2, W3DShaderManager::getShaderTexture(3)->Peek_DX8_Texture());
				terrainShader2Stage.updateNoise2(((D3DXMATRIX*)&curView),&inv);	//update curView with texture matrix
				DX8Wrapper::Set_DX8_Texture_Stage_State(2, D3DTSS_MINFILTER, D3DTEXF_POINT);
				DX8Wrapper::Set_DX8_Texture_Stage_State(2, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
			}
			DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE2, curView);
		}
	}
	else
	{	//just base texturing
		DX8Wrapper::_Get_D3D_Device8()->SetPixelShader(m_dwBasePixelShader);
	}

	return TRUE;
}

void TerrainShaderPixelShader::reset(void)
{
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(2,NULL);	//release reference to any texture
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(3,NULL);	//release reference to any texture

	DX8Wrapper::_Get_D3D_Device8()->SetPixelShader(0);	//turn off pixel shader

	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, NULL);
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, NULL);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|0);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|1);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|2);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|3);


	DX8Wrapper::Invalidate_Cached_Render_States();
}

///Cloud layer rendering shader - used for objects similar to terrain which only need the cloud layer.
class CloudTextureShader : public W3DShaderInterface
{
	virtual Int set(Int stage);		///<setup shader for the specified rendering pass.
	virtual Int init(void);			///<perform any one time initialization and validation
	virtual void reset(void);		///<do any custom resetting necessary to bring W3D in sync.
	Int m_stageOfSet;
} cloudTextureShader;

///List of different cloud shader implementations in order of preference
W3DShaderInterface *CloudShaderList[]=
{
	&cloudTextureShader,
	NULL
};

Int CloudTextureShader::init(void)
{
	W3DShaders[W3DShaderManager::ST_CLOUD_TEXTURE]=&cloudTextureShader;
	W3DShadersPassCount[W3DShaderManager::ST_CLOUD_TEXTURE]=1;

	return TRUE;
}

/**Setup a certain texture stage to project our cloud texture*/
Int CloudTextureShader::set(Int stage)
{
	Matrix4 curView;
	DX8Wrapper::_Get_DX8_Transform(D3DTS_VIEW, curView);

	D3DXMATRIX inv;
	float det;

	D3DXMatrixInverse(&inv, &det, (D3DXMATRIX*)&curView);

	//Get a texture matrix that applies the current cloud position
	terrainShader2Stage.updateNoise1(((D3DXMATRIX*)&curView),&inv,false);	//update curView with texture matrix

	DX8Wrapper::Set_DX8_Texture_Stage_State(stage,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
	DX8Wrapper::Set_DX8_Texture_Stage_State(stage,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	
	DX8Wrapper::_Set_DX8_Transform((D3DTRANSFORMSTATETYPE )(D3DTS_TEXTURE0+stage), curView);
	DX8Wrapper::Set_DX8_Texture_Stage_State(stage, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
	DX8Wrapper::Set_DX8_Texture_Stage_State(stage, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
	DX8Wrapper::Set_DX8_Texture_Stage_State(stage, D3DTSS_ADDRESSU, D3DTADDRESS_WRAP);
	DX8Wrapper::Set_DX8_Texture_Stage_State(stage, D3DTSS_ADDRESSV, D3DTADDRESS_WRAP);

	DX8Wrapper::Set_DX8_Texture_Stage_State( stage, D3DTSS_COLORARG1, D3DTA_TEXTURE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( stage, D3DTSS_COLORARG2, D3DTA_CURRENT );
	DX8Wrapper::Set_DX8_Texture_Stage_State( stage, D3DTSS_COLOROP,   D3DTOP_MODULATE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( stage, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( stage, D3DTSS_ALPHAARG2, D3DTA_CURRENT );
	DX8Wrapper::Set_DX8_Texture_Stage_State( stage, D3DTSS_ALPHAOP,   D3DTOP_MODULATE );

	DX8Wrapper::_Get_D3D_Device8()->SetTexture(stage, W3DShaderManager::getShaderTexture(stage)->Peek_DX8_Texture());

	m_stageOfSet=stage;
	return TRUE;
}

void CloudTextureShader::reset(void)
{
	//Free reference to texture
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(m_stageOfSet, NULL);
	//Turn off texture projection
	DX8Wrapper::Set_DX8_Texture_Stage_State( m_stageOfSet, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( m_stageOfSet, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|m_stageOfSet);

	DX8Wrapper::Set_DX8_Texture_Stage_State( m_stageOfSet, D3DTSS_COLOROP,   D3DTOP_DISABLE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( m_stageOfSet, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );
}

/*===========================================================================================*/
/*=========      Road Shaders	=========================================================*/
/*===========================================================================================*/
class RoadShaderPixelShader : public W3DShaderInterface
{
	DWORD					m_dwBaseNoise2PixelShader;	///<handle to road/double noise D3D pixel shader

	virtual Int set(Int pass);		///<setup shader for the specified rendering pass.
	virtual void reset(void);		///<do any custom resetting necessary to bring W3D in sync.
	virtual Int init(void);			///<perform any one time initialization and validation
	virtual Int shutdown(void);			///<release resources used by shader
} roadShaderPixelShader;

class RoadShader2Stage : public W3DShaderInterface
{	friend class RoadShaderPixelShader;	//pixel shader version uses some of the same features.

	virtual Int set(Int pass);		///<setup shader for the specified rendering pass.
	virtual Int init(void);			///<perform any one time initialization and validation
	virtual void reset(void);
} roadShader2Stage;

///List of different terrain shader implementations in order of preference
W3DShaderInterface *RoadShaderList[]=
{
	&roadShaderPixelShader,
	&roadShader2Stage,
	NULL
};

Int RoadShaderPixelShader::shutdown(void)
{
	if (m_dwBaseNoise2PixelShader)
		DX8Wrapper::_Get_D3D_Device8()->DeletePixelShader(m_dwBaseNoise2PixelShader);

	m_dwBaseNoise2PixelShader=NULL;

	return TRUE;
}

Int RoadShaderPixelShader::init( void )
{	
	Int res;

	//this shader will also use the 2Stage shader for some of the passes so initialize it too.
	if (roadShader2Stage.init() && (res=W3DShaderManager::getChipset()) >= DC_GENERIC_PIXEL_SHADER_1_1)
	{
		if (res >= DC_GENERIC_PIXEL_SHADER_1_1)
		{
			//this shader needs some assets that need to be loaded
			//shader decleration
			DWORD Declaration[]=
			{
				(D3DVSD_STREAM(0)),
				(D3DVSD_REG(0, D3DVSDT_FLOAT3)), // Position
				(D3DVSD_REG(1, D3DVSDT_D3DCOLOR)), // Diffuse
				(D3DVSD_REG(2, D3DVSDT_FLOAT2)), //  Texture Coordinates
				(D3DVSD_END())
			};

			//version which blends 2 noise textures.
			HRESULT hr = W3DShaderManager::LoadAndCreateD3DShader("shaders\\roadnoise2.pso", &Declaration[0], 0, false, &m_dwBaseNoise2PixelShader);
			if (FAILED(hr))
				return FALSE;

			//Only set this shader for use in dual noise mode.  The 2Stage shader will take care of
			//all the other modes.
			W3DShaders[W3DShaderManager::ST_ROAD_BASE_NOISE12]=&roadShaderPixelShader;
			W3DShadersPassCount[W3DShaderManager::ST_ROAD_BASE_NOISE12]=1;
			return TRUE;
		}
	}
	return FALSE;
}

Int RoadShaderPixelShader::set(Int pass)
{
	//after we're done with this shader we're going to reset to NULL texture, so set W3D same way.
	DX8Wrapper::Set_Texture(0,NULL);
	DX8Wrapper::Set_Texture(1,NULL);
	//force WW3D2 system to set it's states so it won't later overwrite our custom settings.
	DX8Wrapper::Apply_Render_State_Changes();
	//Directly set texture without W3D knowing... but we'll restore to NULL later.
	if (W3DShaderManager::getShaderTexture(0))
		DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, W3DShaderManager::getShaderTexture(0)->Peek_DX8_Texture());

	//tell pixel shader which UV set to use for each stage
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, 0 );

	DX8Wrapper::Set_DX8_Render_State(D3DRS_ZFUNC,D3DCMP_LESSEQUAL);
	DX8Wrapper::Set_DX8_Render_State(D3DRS_ZWRITEENABLE,FALSE);
	DX8Wrapper::Set_DX8_Render_State(D3DRS_LIGHTING, FALSE);

	DX8Wrapper::Set_DX8_Render_State(D3DRS_ALPHABLENDENABLE,true);	//blend roads into terrain
	DX8Wrapper::Set_DX8_Render_State(D3DRS_SRCBLEND,D3DBLEND_SRCALPHA);
	DX8Wrapper::Set_DX8_Render_State(D3DRS_DESTBLEND,D3DBLEND_INVSRCALPHA);

	Matrix4 curView;
	DX8Wrapper::_Get_DX8_Transform(D3DTS_VIEW, curView);

	D3DXMATRIX inv;
	float det;
	D3DXMatrixInverse(&inv, &det, (D3DXMATRIX*)&curView);

	if (TheGlobalData && TheGlobalData->m_trilinearTerrainTex)
	{	DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
	}
	else
	{	DX8Wrapper::Set_DX8_Texture_Stage_State(0, D3DTSS_MIPFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_POINT);
	}

	DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
	// Two output coordinates are used.
	DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	

	DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_ADDRESSU, D3DTADDRESS_WRAP);
	DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_ADDRESSV, D3DTADDRESS_WRAP);
	
	DX8Wrapper::Set_DX8_Texture_Stage_State(2,  D3DTSS_ADDRESSU, D3DTADDRESS_WRAP);
	DX8Wrapper::Set_DX8_Texture_Stage_State(2,  D3DTSS_ADDRESSV, D3DTADDRESS_WRAP);
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, W3DShaderManager::getShaderTexture(1)->Peek_DX8_Texture());
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(2, W3DShaderManager::getShaderTexture(2)->Peek_DX8_Texture());
	DX8Wrapper::_Get_D3D_Device8()->SetPixelShader(m_dwBaseNoise2PixelShader);

	DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
	DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);

	DX8Wrapper::Set_DX8_Texture_Stage_State(2, D3DTSS_MINFILTER, D3DTEXF_POINT);
	DX8Wrapper::Set_DX8_Texture_Stage_State(2, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);

	terrainShader2Stage.updateNoise1(((D3DXMATRIX*)&curView),&inv, false);	//get texture projection matrix
	DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE1, curView);

	terrainShader2Stage.updateNoise2(((D3DXMATRIX*)&curView),&inv, false);	//get texture projection matrix
	DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE2, curView);

	DX8Wrapper::Set_DX8_Texture_Stage_State(2,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
	// Two output coordinates are used.
	DX8Wrapper::Set_DX8_Texture_Stage_State(2,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	

	return TRUE;
}

void RoadShaderPixelShader::reset(void)
{
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(2,NULL);	//release reference to any texture
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(3,NULL);	//release reference to any texture

	DX8Wrapper::_Get_D3D_Device8()->SetPixelShader(0);	//turn off pixel shader

	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, NULL);
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, NULL);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|0);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|1);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 2, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|2);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 3, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|3);


	DX8Wrapper::Invalidate_Cached_Render_States();
}

Int RoadShader2Stage::init( void )
{
	//no special device validation needed - anything in our min spec should handle this.
	W3DShaders[W3DShaderManager::ST_ROAD_BASE]=&roadShader2Stage;
	W3DShadersPassCount[W3DShaderManager::ST_ROAD_BASE]=1;
	W3DShaders[W3DShaderManager::ST_ROAD_BASE_NOISE1]=&roadShader2Stage;
	W3DShadersPassCount[W3DShaderManager::ST_ROAD_BASE_NOISE1]=1;
	W3DShaders[W3DShaderManager::ST_ROAD_BASE_NOISE2]=&roadShader2Stage;
	W3DShadersPassCount[W3DShaderManager::ST_ROAD_BASE_NOISE2]=1;
	W3DShaders[W3DShaderManager::ST_ROAD_BASE_NOISE12]=&roadShader2Stage;
	W3DShadersPassCount[W3DShaderManager::ST_ROAD_BASE_NOISE12]=2;

	return TRUE;
}

Int RoadShader2Stage::set(Int pass)																											  
{
	//after we're done with this shader we're going to reset to NULL texture, so set W3D same way.
	DX8Wrapper::Set_Texture(0,NULL);
	DX8Wrapper::Set_Texture(1,NULL);
	//Force system to apply world/view transforms.
	DX8Wrapper::Apply_Render_State_Changes();

	DX8Wrapper::Set_DX8_Render_State(D3DRS_ZFUNC,D3DCMP_LESSEQUAL);
	DX8Wrapper::Set_DX8_Render_State(D3DRS_ZWRITEENABLE,FALSE);
	DX8Wrapper::Set_DX8_Render_State(D3DRS_LIGHTING, FALSE);

	//first texture unit will always contain base road texture
	if (W3DShaderManager::getShaderTexture(0))
		DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, W3DShaderManager::getShaderTexture(0)->Peek_DX8_Texture());

	// Modulate the diffuse color with the texture as lighting comes from diffuse.
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLOROP,   D3DTOP_MODULATE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAOP,   D3DTOP_MODULATE );

	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, 0 );
	DX8Wrapper::Set_DX8_Render_State(D3DRS_ALPHABLENDENABLE,true);	//blend roads into terrain

	if (pass == 0)
	{	
		DX8Wrapper::Set_DX8_Render_State(D3DRS_SRCBLEND,D3DBLEND_SRCALPHA);
		DX8Wrapper::Set_DX8_Render_State(D3DRS_DESTBLEND,D3DBLEND_INVSRCALPHA);

		if (W3DShaderManager::getCurrentShader() >= W3DShaderManager::ST_ROAD_BASE_NOISE1)
		{	//second texture unit will contain a noise pass
			Matrix4 curView;
			DX8Wrapper::_Get_DX8_Transform(D3DTS_VIEW, curView);

			D3DXMATRIX inv;
			float det;
			D3DXMatrixInverse(&inv, &det, (D3DXMATRIX*)&curView);

			if (TheGlobalData && TheGlobalData->m_trilinearTerrainTex)
				DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
			else
				DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_POINT);

			DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
			// Two output coordinates are used.
			DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	

			DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_ADDRESSU, D3DTADDRESS_WRAP);
			DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_ADDRESSV, D3DTADDRESS_WRAP);

			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG1, D3DTA_TEXTURE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG2, D3DTA_CURRENT );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP,   D3DTOP_MODULATE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAARG2, D3DTA_CURRENT );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_MODULATE );

			if (W3DShaderManager::getCurrentShader() == W3DShaderManager::ST_ROAD_BASE_NOISE12)
			{	//full shader, apply noise 1 in pass 0.
				DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, W3DShaderManager::getShaderTexture(1)->Peek_DX8_Texture());
				DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
				DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);

				terrainShader2Stage.updateNoise1(((D3DXMATRIX*)&curView),&inv, false);	//get texture projection matrix
				DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE1, curView);
			}
			else
			{	//single noise texture shader
				if (W3DShaderManager::getCurrentShader() == W3DShaderManager::ST_ROAD_BASE_NOISE1)
				{	//cloud map
					DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, W3DShaderManager::getShaderTexture(1)->Peek_DX8_Texture());
					terrainShader2Stage.updateNoise1(((D3DXMATRIX*)&curView),&inv, false);	//update curView with texture matrix
					DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
					DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
				}
				else
				{	//light map
					DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, W3DShaderManager::getShaderTexture(2)->Peek_DX8_Texture());
					terrainShader2Stage.updateNoise2(((D3DXMATRIX*)&curView),&inv, false);	//update curView with texture matrix
					DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_POINT);
					DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
				}
				DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE1, curView);
			}
		}
		else
		{	//just base texturing
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP,   D3DTOP_DISABLE );
			DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );
		}
	}	//pass 0
	else
	{	//pass 1, apply additional noise pass
		Matrix4 curView;
		DX8Wrapper::_Get_DX8_Transform(D3DTS_VIEW, curView);

		D3DXMATRIX inv;
		float det;
		D3DXMatrixInverse(&inv, &det, (D3DXMATRIX*)&curView);

		if (TheGlobalData && TheGlobalData->m_trilinearTerrainTex)
			DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_LINEAR);
		else
			DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MIPFILTER, D3DTEXF_POINT);

		DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, W3DShaderManager::getShaderTexture(2)->Peek_DX8_Texture());

		terrainShader2Stage.updateNoise2(((D3DXMATRIX*)&curView),&inv, false);	//update curView with texture matrix
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MINFILTER, D3DTEXF_POINT);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);

		DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEPOSITION);
		// Two output coordinates are used.
		DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);	

		DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_ADDRESSU, D3DTADDRESS_WRAP);
		DX8Wrapper::Set_DX8_Texture_Stage_State(1,  D3DTSS_ADDRESSV, D3DTADDRESS_WRAP);

		//Copy alpha channel into stage 1 but mask out color channel by replacing with white.
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
		//Force color channel to white by copying the alpha into RGB
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE|D3DTA_ALPHAREPLICATE);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_COLOROP,   D3DTOP_SELECTARG2);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ALPHAOP,   D3DTOP_SELECTARG1 );

		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG1, D3DTA_TEXTURE );
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLORARG2, D3DTA_CURRENT );
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_COLOROP,   D3DTOP_BLENDCURRENTALPHA);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAARG2, D3DTA_CURRENT );
		DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_ALPHAOP,   D3DTOP_DISABLE );

		//Modulate into existing roads with clouds applied. - only apply where roads are transparent by
		//using road texture as a mask.
		DX8Wrapper::Set_DX8_Render_State(D3DRS_SRCBLEND,D3DBLEND_ZERO);
		DX8Wrapper::Set_DX8_Render_State(D3DRS_DESTBLEND,D3DBLEND_SRCCOLOR);

		DX8Wrapper::_Set_DX8_Transform(D3DTS_TEXTURE0, curView);
	}

	return TRUE;
}

void RoadShader2Stage::reset(void)
{
	ShaderClass::Invalidate();

	//Free references to textures
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(0, NULL);
	DX8Wrapper::_Get_D3D_Device8()->SetTexture(1, NULL);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|0);

	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_DISABLE);
	DX8Wrapper::Set_DX8_Texture_Stage_State( 1, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU|1);
}

/** List of all custom shader lists - each list in this list contains variations of the same
	shader to allow it to work on different hardware configurations.
*/
W3DShaderInterface **MasterShaderList[]=
{
	TerrainShaderList,
	ShroudShaderList,
	RoadShaderList,
	MaskShaderList,
	CloudShaderList,
	NULL
};

/** List of all custom filter lists - each list in this list contains variations of the same
	filter to allow it to work on different hardware configurations.
*/
W3DFilterInterface **MasterFilterList[]=
{
	ScreenBWFilterList,
	ScreenMotionBlurFilterList,
	ScreenCrossFadeFilterList,
	NULL
};

// W3DShaderManager::W3DShaderManager =========================================
/** Constructor - just clears some variables */
//=============================================================================
W3DShaderManager::W3DShaderManager(void)
{
	m_currentShader = ST_INVALID;
	m_currentFilter = FT_NULL_FILTER;
	m_oldRenderSurface = NULL;
	m_renderTexture = NULL;
	m_newRenderSurface = NULL;
	m_oldDepthSurface = NULL;
	m_renderingToTexture = false;
	Int i;
	for (i=0; i<W3DShaderManager::ST_MAX; i++)
	{	W3DShaders[i]=NULL;
		W3DShadersPassCount[i]=0;
	}
	for (i=0; i<FT_MAX; i++)
	{	W3DFilters[i]=NULL;
	}
	for (i=0; i<8; i++)
	{
		m_Textures[i]=NULL;
	}
	m_currentShader=(W3DShaderManager::ShaderTypes)-1;
}

// W3DShaderManager::init =======================================================
/** Walk through all shaders and find versions suitable for current hardware */
//=============================================================================
void W3DShaderManager::init(void)
{
	int i,j;

	D3DSURFACE_DESC desc;
	// For now, check & see if we are gf3 or higher on the food chain.

	Int res=0;
	if ((res=W3DShaderManager::getChipset()) != 0)
	{
		//Some of our effects require an offscreen render target, so try creating it here.
		HRESULT hr=DX8Wrapper::_Get_D3D_Device8()->GetRenderTarget(&m_oldRenderSurface);

		m_oldRenderSurface->GetDesc(&desc);

		hr=DX8Wrapper::_Get_D3D_Device8()->CreateTexture(desc.Width,desc.Height,1,D3DUSAGE_RENDERTARGET,desc.Format,D3DPOOL_DEFAULT,&m_renderTexture);

		if (hr != S_OK)
		{
			if (m_oldRenderSurface) m_oldRenderSurface->Release();
			m_oldRenderSurface = NULL;
			m_renderTexture = NULL;
		} else {
			hr = m_renderTexture->GetSurfaceLevel(0, &m_newRenderSurface);
			if (hr != S_OK)
			{
				if (m_renderTexture) m_renderTexture->Release();
				m_renderTexture = NULL;
				m_newRenderSurface = NULL;
			}	else {
				hr = DX8Wrapper::_Get_D3D_Device8()->GetDepthStencilSurface(&m_oldDepthSurface);
				if (hr != S_OK)
				{
					if (m_newRenderSurface) m_newRenderSurface->Release();
					if (m_renderTexture) m_renderTexture->Release();
					m_renderTexture = NULL;
					m_newRenderSurface = NULL;
					m_oldDepthSurface = NULL;
				}
			}
		}
	}

	W3DShaderInterface **shaders;

	for (i=0; MasterShaderList[i] != NULL; i++)
	{	
		shaders=MasterShaderList[i];
		for (j=0; shaders[j] != NULL; j++)
		{
			if (shaders[j]->init())
				break;	//found a working shader
		}
	}
	W3DFilterInterface **filters;

	for (i=0; MasterFilterList[i] != NULL; i++)
	{	
		filters=MasterFilterList[i];
		for (j=0; filters[j] != NULL; j++)
		{
			if (filters[j]->init())
				break;	//found a working shader
		}
	}

	DEBUG_LOG(("ShaderManager ChipsetID %d\n", res));
}

// W3DShaderManager::shutdown =======================================================
/** Any shaders which allocate resources will be allowed to free them */
//=============================================================================
void W3DShaderManager::shutdown(void)
{
	if (m_newRenderSurface) m_newRenderSurface->Release();
	if (m_renderTexture) m_renderTexture->Release();
	if (m_oldRenderSurface) m_oldRenderSurface->Release();
	if (m_oldDepthSurface) m_oldDepthSurface->Release();
	m_renderTexture = NULL;
	m_newRenderSurface = NULL;
	m_oldDepthSurface = NULL;
	m_oldRenderSurface = NULL;
	m_currentShader = ST_INVALID;
	m_currentFilter = FT_NULL_FILTER;
	//release any assets associated with a shader (vertex/pixel shaders, textures, etc.)
	for (Int i=0; i<W3DShaderManager::ST_MAX; i++) {
		if (W3DShaders[i]) {
			W3DShaders[i]->shutdown();
		}
	}

 	for ( i=0; i < FT_MAX; i++)
 	{	
 		if (W3DFilters[i])
 		{
 			W3DFilters[i]->shutdown();
 		}
	}
}

// W3DShaderManager::getShaderPasses =======================================================
/** Return number of renderig passes required in perform the desired shader on current
	hardware.  App will need to re-render the polygons this many times to complete the
	effect.
 */
//=============================================================================
Int W3DShaderManager::getShaderPasses(ShaderTypes shader)
{
	return W3DShadersPassCount[shader];
}

// W3DShaderManager::setShader =======================================================
/** Must call this method before each rendering pass in order to perform proper D3D
	setup for each shader.
 */
//=============================================================================
Int W3DShaderManager::setShader(ShaderTypes shader, Int pass)
{
	if (shader == m_currentShader && pass == m_currentShaderPass)
		return TRUE;	//shader is already set
	m_currentShader=shader;
	m_currentShaderPass = pass;
	if (W3DShaders[shader])
		return W3DShaders[shader]->set(pass);
	return FALSE;
}

// W3DShaderManager::resetShader =======================================================
/** Must call this method after all polygons and rendering passes have been submitted.
	This method allows D3D to reset itself to a default state that doesn't conflict
	with the WW3D2 Shader system.
 */
//=============================================================================
void W3DShaderManager::resetShader(ShaderTypes shader)
{	
	if (m_currentShader == ST_INVALID)
		return;	//last shader is already reset.
	if (W3DShaders[shader])
		W3DShaders[shader]->reset();
	m_currentShader = ST_INVALID;
}
// W3DShaderManager::filterPreRender =======================================================
/** Call to view filter shaders before rendering starts.
 */
//=============================================================================
Bool W3DShaderManager::filterPreRender(FilterTypes filter, Bool &skipRender, CustomScenePassModes &scenePassMode)
{
	if (W3DFilters[filter])
	{	Bool result=W3DFilters[filter]->preRender(skipRender,scenePassMode);
		if (result)
			m_currentFilter = filter;
		return result;
	}
	return FALSE;
}

// W3DShaderManager::filterPostRender =======================================================
/** Call to view filter shaders after rendering is complete.
 */
//=============================================================================
Bool W3DShaderManager::filterPostRender(FilterTypes filter, enum FilterModes mode, Coord2D &scrollDelta, Bool &doExtraRender)
{
	if (W3DFilters[filter])
		return W3DFilters[filter]->postRender(mode, scrollDelta,doExtraRender);

	m_currentFilter = FT_NULL_FILTER;
	return FALSE;
}

// W3DShaderManager::filterPostRender =======================================================
/** Call to view filter shaders after rendering is complete.
 */
//=============================================================================
	static Bool filterSetup(FilterTypes filter, enum FilterModes mode);
Bool W3DShaderManager::filterSetup(FilterTypes filter, enum FilterModes mode)
{
	if (W3DFilters[filter])
		return W3DFilters[filter]->setup(mode);
	return FALSE;
}

/*Draws 2 triangles covering the viewport given the current render states*/
void W3DShaderManager::drawViewport(Int color)
{
	LPDIRECT3DDEVICE8 pDev=DX8Wrapper::_Get_D3D_Device8();

	struct _TRANS_LIT_TEX_VERTEX {
		D3DXVECTOR4 p;
		DWORD color;   // diffuse color    
		float	u;
		float	v;
	} v[4];

	Int xpos, ypos, width, height;

	TheTacticalView->getOrigin(&xpos,&ypos);
	width=TheTacticalView->getWidth();
	height=TheTacticalView->getHeight();

	//bottom right
	v[0].p = D3DXVECTOR4( xpos+width-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[0].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[0].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	//top right
	v[1].p = D3DXVECTOR4( xpos+width-0.5f, ypos-0.5f, 0.0f, 1.0f );
	v[1].u = (Real)(xpos+width)/(Real)TheDisplay->getWidth();	v[1].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	//bottom left
	v[2].p = D3DXVECTOR4(  xpos-0.5f, ypos+height-0.5f, 0.0f, 1.0f );
	v[2].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[2].v = (Real)(ypos+height)/(Real)TheDisplay->getHeight();
	//top left
	v[3].p = D3DXVECTOR4(  xpos-0.5f,  ypos-0.5f, 0.0f, 1.0f );
	v[3].u = (Real)(xpos)/(Real)TheDisplay->getWidth();	v[3].v = (Real)(ypos)/(Real)TheDisplay->getHeight();
	v[0].color = color;
	v[1].color = color;
	v[2].color = color;
	v[3].color = color;

	//draw polygons like this is very inefficient but for only 2 triangles, it's
	//not worth bothering with index/vertex buffers.
	pDev->SetVertexShader(D3DFVF_XYZRHW | D3DFVF_DIFFUSE | D3DFVF_TEX1);

	pDev->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, v, sizeof(_TRANS_LIT_TEX_VERTEX));
}

// W3DShaderManager::startRenderToTexture =======================================================
/** Starts rendering to a texture.
 */
//=============================================================================
void W3DShaderManager::startRenderToTexture(void)
{	
	DEBUG_ASSERTCRASH(!m_renderingToTexture, ("Already rendering to texture - cannot nest calls."));

	if (m_renderingToTexture || m_newRenderSurface==NULL || m_oldDepthSurface==NULL) return;
	HRESULT hr = DX8Wrapper::_Get_D3D_Device8()->SetRenderTarget(m_newRenderSurface,m_oldDepthSurface);
	DEBUG_ASSERTCRASH(hr==S_OK, ("Set target failed unexpectedly."));
	if (hr != S_OK)
		return;
	m_renderingToTexture = true;
	if (TheGlobalData->m_showSoftWaterEdge)
	{	//Soft water edges use frame buffer destination alpha so we must clear it to a known value.
		if (m_currentFilter == FT_VIEW_MOTION_BLUR_FILTER || m_currentFilter == FT_VIEW_CROSSFADE)
		{	//these filters rely on the previous frame being visible so we must be careful about clearing
			//frame buffer.  Only clear the alpha channel
			DX8Wrapper::Set_DX8_Render_State(D3DRS_COLORWRITEENABLE,D3DCOLORWRITEENABLE_ALPHA);	//only clear alpha
			ShaderClass shader=ShaderClass::_PresetOpaqueSolidShader;
			shader.Set_Depth_Compare(ShaderClass::PASS_ALWAYS);
			shader.Set_Depth_Mask(ShaderClass::DEPTH_WRITE_DISABLE);
			DX8Wrapper::Set_Shader(shader);

			VertexMaterialClass *vmat=VertexMaterialClass::Get_Preset(VertexMaterialClass::PRELIT_DIFFUSE);
			DX8Wrapper::Set_Material(vmat);
			REF_PTR_RELEASE(vmat);	//no need to keep a reference since it's a preset.
		
			drawViewport(0x00ffffff | (((Int)(TheWaterTransparency->m_minWaterOpacity*255.0f)) <<24));
			DX8Wrapper::Set_DX8_Render_State(D3DRS_COLORWRITEENABLE,D3DCOLORWRITEENABLE_RED|D3DCOLORWRITEENABLE_GREEN|D3DCOLORWRITEENABLE_BLUE);	//disable writes to alpha
		}
		else	//normal clear that overwrites everything.
			DX8Wrapper::Clear(true, false, Vector3( 0.0f, 0.0f, 0.0f ), TheWaterTransparency->m_minWaterOpacity);
	}
}

// W3DShaderManager::startRenderToTexture =======================================================
/** Ends rendering to a texture.
 */
//=============================================================================
IDirect3DTexture8 *W3DShaderManager::endRenderToTexture(void)
{	
	DEBUG_ASSERTCRASH(m_renderingToTexture, ("Not rendering to texture."));
	if (!m_renderingToTexture) return NULL;
	HRESULT hr = DX8Wrapper::_Get_D3D_Device8()->SetRenderTarget(m_oldRenderSurface,m_oldDepthSurface);	//restore original render target
	DEBUG_ASSERTCRASH(hr==S_OK, ("Set target failed unexpectedly."));
	if (hr == S_OK)
	{
		//assume render target texure will be in stage 0.  Most hardware has "conditional" support for
		//non-power-of-2 textures so we must force some required states:
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSU, D3DTADDRESS_CLAMP);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSV, D3DTADDRESS_CLAMP);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_ADDRESSW, D3DTADDRESS_CLAMP);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_MAGFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_MINFILTER, D3DTEXF_LINEAR);
		DX8Wrapper::Set_DX8_Texture_Stage_State( 0, D3DTSS_MIPFILTER, D3DTEXF_NONE);

		m_renderingToTexture = false;
	}
	return m_renderTexture;
}

/**Returns texture containing the image that was last rendered using any of the effects requiring render target
textures.  Used mostly for cross-fading effects that need an unmodified version of the view before the effect
was applied.  NOTE: This texture does not survive device reset.. so quit effect on reset!*/
IDirect3DTexture8 *W3DShaderManager::getRenderTexture(void)
{
	return m_renderTexture;
}

#define DC_NVIDIA_VENDOR_ID 0x10DE
#define DC_3DFX_VENDOR_ID	0x121A
#define DC_ATI_VENDOR_ID	0x1002

// W3DShaderManager::ChipsetType =======================================================
/** Returns the chipset used by the currently active rendering device.  Can be useful
	for coding around specific driver bugs.
 */
//=============================================================================
ChipsetType W3DShaderManager::getChipset( void )
{
	//check if globaldata has an override for current chipset
	if (TheGlobalData && TheGlobalData->m_chipSetType != DC_UNKNOWN)
		return (ChipsetType)TheGlobalData->m_chipSetType;

	ChipsetType chip=DC_UNKNOWN;
	IDirect3D8* d3d8Interface=DX8Wrapper::_Get_D3D8();

	if (d3d8Interface && DX8Wrapper::_Get_D3D_Device8())
	{

		D3DADAPTER_IDENTIFIER8 did;
		::ZeroMemory(&did, sizeof(D3DADAPTER_IDENTIFIER8));
	/*	HRESULT res = */ d3d8Interface->GetAdapterIdentifier(0,D3DENUM_NO_WHQL_LEVEL,&did);
		
		if(did.VendorId == DC_NVIDIA_VENDOR_ID)
		{
			if (did.DeviceId == 0x20)
				return DC_TNT;
   
			if (did.DeviceId >= 0x28 && did.DeviceId < 0x100)
				return DC_TNT2;

			if ( (did.DeviceId >= 0x100 && did.DeviceId <= 0x103) ||	//GeForce
				 (did.DeviceId >= 0x110 && did.DeviceId <= 0x113) ||	//GeForce2 MX
						 (did.DeviceId >= 0x150 && did.DeviceId <= 0x153) )	//GeForce2
           		return DC_GEFORCE2;

			if (did.DeviceId >= 0x200 && did.DeviceId < 0x250)
				return DC_GEFORCE3;

			if (did.DeviceId >= 0x250)
				return DC_GEFORCE4;
		}
		else
		if(did.VendorId == DC_3DFX_VENDOR_ID)
		{
			if (did.DeviceId == 0x0002)
				return DC_VOODOO2;
			if (did.DeviceId == 0x0005)
				return DC_VOODOO3;
			if (did.DeviceId == 0x0008)	///@todo: Just guessing on this one - find actual Voodoo4 deviceID.
				return DC_VOODOO4;
			if (did.DeviceId == 0x0009)
				return DC_VOODOO5;
		}
		else
		if(did.VendorId == DC_ATI_VENDOR_ID)
		{
			if (did.DeviceId == 0x5144)
				return DC_RADEON;
			if (did.DeviceId == 0x514C)
				return DC_RADEON_8500;
			if (did.DeviceId == 0x4e44)
				return DC_RADEON_9700;
		}

		//None of the vendor specific ID's matched so use generic means to classify the card
		Int maxTextures=DX8Caps::Get_Max_Simultaneous_Textures();
		Real pixelShaderVersion;

		char buf[256];

		//Convert version to Real
		sprintf(buf,"%d.%d",DX8Caps::Get_Pixel_Shader_Majon_Version(),DX8Caps::Get_Pixel_Shader_Minor_Version());
		sscanf(buf,"%f",&pixelShaderVersion);

		if (maxTextures >= 4)
		{	if (pixelShaderVersion >= 1.1f)
				chip=DC_GENERIC_PIXEL_SHADER_1_1;
			if (pixelShaderVersion >= 1.4f)
				chip=DC_GENERIC_PIXEL_SHADER_1_4;
			if (maxTextures >= 8 && pixelShaderVersion >= 2.0f)
				chip=DC_GENERIC_PIXEL_SHADER_2_0;
		}
	}	//D3D8 interface and device exist. 
	
	return chip;
}

//=============================================================================
// WaterRenderObjClass::LoadAndCreateShader
//=============================================================================
/** Loads and creates a D3D pixel or vertex shader.*/
//=============================================================================
HRESULT W3DShaderManager::LoadAndCreateD3DShader(char* strFilePath, const DWORD* pDeclaration, DWORD Usage, Bool ShaderType, DWORD* pHandle)
{
	try
	{
		File *file = NULL;
		HRESULT hr;

		file = TheFileSystem->openFile(strFilePath, File::READ | File::BINARY);
		if (file == NULL)
		{
			OutputDebugString("Could not find file \n" );
			return E_FAIL;
		}

		FileInfo fileInfo;
		TheFileSystem->getFileInfo(AsciiString(strFilePath), &fileInfo);
		DWORD dwFileSize = fileInfo.sizeLow;

		const DWORD* pShader = (DWORD*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, dwFileSize);
		if (!pShader)
		{
			OutputDebugString( "Failed to allocate memory to load shader\n " );
			return E_FAIL;
		}

		file->read((void *)pShader, dwFileSize);

		file->close();
		file = NULL;

		if (ShaderType == TRUE)//SHADERTYPE_VERTEX)
		{
			hr = DX8Wrapper::_Get_D3D_Device8()->CreateVertexShader(pDeclaration, pShader, pHandle, Usage);
		}
		else if (ShaderType == FALSE)//SHADERTYPE_PIXEL)
		{
			hr = DX8Wrapper::_Get_D3D_Device8()->CreatePixelShader(pShader, pHandle);
		}

		HeapFree(GetProcessHeap(), 0, (void*)pShader);

		if (FAILED(hr))
		{
			OutputDebugString( "Failed to create shader\n "); 
			return E_FAIL;
		}
	}
	catch(...)
	{
		OutputDebugString( "Error opening file \n" );
		return E_FAIL;
	}

	return S_OK;
}

//For the MP test, we're enforcing high min-spec requirements that need to be verified.
#define MIN_INTEL_CPU_FREQ	1300
#define MIN_AMD_CPU_FREQ	1100
#define MIN_ACCEPTED_FREQUENCY	1300
#define MIN_ACCEPTED_MEMORY	(1024*1024*256)	//256 MB
#define MIN_ACCEPTED_TEXTURE_MEMORY	(1024*1024*30)	//30 MB

/**Hack to give gameengine access to this function*/
Bool testMinimumRequirements(ChipsetType *videoChipType, CpuType *cpuType, Int *cpuFreq, Int *numRAM, Real *intBenchIndex, Real *floatBenchIndex, Real *memBenchIndex)
{
	return W3DShaderManager::testMinimumRequirements(videoChipType,cpuType,cpuFreq,numRAM,intBenchIndex,floatBenchIndex,memBenchIndex);
}

Bool W3DShaderManager::testMinimumRequirements(ChipsetType *videoChipType, CpuType *cpuType, Int *cpuFreq, Int *numRAM, Real *intBenchIndex, Real *floatBenchIndex, Real *memBenchIndex)
{
	if (videoChipType)
		*videoChipType = getChipset();

	if (cpuType)
	{
		*cpuType = XX;	//unknown

		//Check if it's an Athlon
		if (CPUDetectClass::Get_Processor_Manufacturer() == CPUDetectClass::MANUFACTURER_AMD &&
				CPUDetectClass::Get_AMD_Processor() >= CPUDetectClass::AMD_PROCESSOR_ATHLON_025)
				*cpuType = K7;

		//Check if it's a P3
		if (CPUDetectClass::Get_Processor_Manufacturer() == CPUDetectClass::MANUFACTURER_INTEL &&
				CPUDetectClass::Get_Intel_Processor() >= CPUDetectClass::INTEL_PROCESSOR_PENTIUM_III_MODEL_7)
				*cpuType = P3;
		//Check if it's a P4
		if (CPUDetectClass::Get_Processor_Manufacturer() == CPUDetectClass::MANUFACTURER_INTEL &&
				CPUDetectClass::Get_Intel_Processor() >= CPUDetectClass::INTEL_PROCESSOR_PENTIUM4)
				*cpuType = P4;
	}

	if (cpuFreq)
		*cpuFreq=CPUDetectClass::Get_Processor_Speed();

	if (numRAM)
		*numRAM=CPUDetectClass::Get_Total_Physical_Memory();

	if (intBenchIndex && floatBenchIndex && memBenchIndex)
	{
		RunBenchmark(0, NULL, floatBenchIndex, intBenchIndex, memBenchIndex);
	}

	return TRUE;
}

/**Try to guess how well the video card will handle the game assuming very fast CPU*/
StaticGameLODLevel W3DShaderManager::getGPUPerformanceIndex(void)
{
	ChipsetType	chipType;
	StaticGameLODLevel detailSetting=STATIC_GAME_LOD_LOW;	//assume lowest settings for now.

	if ((chipType=getChipset()) != DC_UNKNOWN)
	{	//a known video card so we can make some assumptions
		if (chipType >=	DC_GEFORCE2)
			detailSetting=STATIC_GAME_LOD_LOW;	//these cards need multiple terrain passes.
		if (chipType >= DC_GENERIC_PIXEL_SHADER_1_1)	//these cards can do terrain in single pass.
			detailSetting=STATIC_GAME_LOD_HIGH;
	}

	return detailSetting;
}

/**We need a hardware independent method to compare different CPU's.  For lack of anything better, we'll
use time to calculate PIE using a slow random number algorithm.*/

/**Used to test function call overhead*/
void add(float *sum,float *addend)
{
	*sum = *sum + *addend;
}

/**Returns seconds needed to run the test*/
Real W3DShaderManager::GetCPUBenchTime(void)
{
	float ztot, yran, ymult, ymod, x, y, z, pi, prod;
    long int low, ixran, itot, j, iprod;

  	__int64 endTime64,freq64,startTime64;
	QueryPerformanceFrequency((LARGE_INTEGER *)&freq64);
	QueryPerformanceCounter((LARGE_INTEGER *)&startTime64);

    ztot = 0.0;
    low = 1;
    ixran = 1907;
    yran = 5813.0;
    ymult = 1307.0;
    ymod = 5471.0;
    itot = 560000;	//total iterations. This value ends up running at ~30 fps on our P4-2.2Ghz.

    for(j=1; j<=itot; j++)
    {
		iprod = 27611 * ixran;
		ixran = iprod - 74383*(long int)(iprod/74383);
		x = (float)ixran / 74383.0;
		prod = ymult * yran;
		yran = (prod - ymod*(long int)(prod/ymod));
		y = yran / ymod;
		z = x*x + y*y;
		add(&ztot,&z);
		if ( z <= 1.0 )
		{
		  low = low + 1;
		}
	}
	pi = 4.0 * (float)low/(float)itot;

	QueryPerformanceCounter((LARGE_INTEGER *)&endTime64);
	return ((double)(endTime64-startTime64)/(double)(freq64));
}