#define IS_FX_FILE
#include "modeDef.h"

Texture2D FPtexDiff;	// ディフューズ
Texture2D FPtexAmb;	// スペキュラ
Texture2D FPtexNorm;	// 法線
Texture2D FPtexPos;	// 位置
Texture2D FPtexDepth;	// 深度
Texture2D FPtexRef;	// 反射
Texture2D FPtexLightResult;	// ライト計算蓄積バッファ
Texture2D FPtexPShadow;	// 投影シャドウ

SamplerState PointSampler
{
    Filter = MIN_MAG_MIP_POINT;
    AddressU = Clamp;
    AddressV = Clamp;
};


SamplerState LinearSample
{
    Filter = MIN_MAG_MIP_LINEAR;
    AddressU = Clamp;
    AddressV = Clamp;
};

DepthStencilState DisableDepth
{
    DepthEnable = FALSE;
    DepthWriteMask = ZERO;

	StencilEnable = true;
	StencilReadMask = 0xFF;
	StencilWriteMask = 0xFF;
	FRONTFACESTENCILFUNC = ALWAYS;
//	FRONTFACESTENCILFUNC = GREATER_EQUAL;

};

BlendState NoBlend
{
	BlendEnable[0] = FALSE;
	BlendEnable[1] = FALSE;
	BlendEnable[2] = FALSE;
	BlendEnable[3] = FALSE;
	BlendEnable[4] = FALSE;
	BlendEnable[5] = FALSE;
	BlendEnable[6] = FALSE;
	BlendEnable[7] = FALSE;
};

//===================================================================================================
// 共通
//===================================================================================================

struct QuadVS_Input
{
    float4 Pos : POSITION;
    float2 Tex : TEXCOORD0;
};

struct QuadVS_Output
{
    float4 Pos : SV_POSITION;              // Transformed position
    float2 Tex : TEXCOORD0;
};

QuadVS_Output QuadVS( QuadVS_Input Input )
{
    QuadVS_Output Output;
    Output.Pos = Input.Pos;
    Output.Tex = Input.Tex;
    return Output;
};



//===================================================================================================
// 入力
//===================================================================================================

cbuffer cb1 
{
    float4x4    g_mInvProj;	// 射影行列の逆行列
	float4		g_PosEye;	// カメラ位置,zはファークリップ距離
	//// フォグ
	//float4	fogColor;
	//float	fogNear;
	//float	fogFar;
	//bool	fogEnable;
	//bool    debugLineDisp;
	//float	fogMapScale;
	//float4	fogMapOffset;

	//float   fogMapColorOffset;
	//float   fogMapColorGain;
	//float   fogMapBlendRate;

	//// 高さフォグ
	//float4	hfogColor;
	//float	hfogNear;
	//float	hfogFar;
	//bool	hfogEnable;

};


//===================================================================================================
// ファイナルパス
//===================================================================================================
float4 FinalPass( QuadVS_Output Input, uniform int type  ) : SV_TARGET
{
	float4 vColor;
	switch(type){


case DR_MODE_FINAL:		// ディフューズライト＋スペキュラライト
	vColor = FPtexLightResult.Sample( LinearSample, Input.Tex );

	// 影反映
	//float shadow = FPtexNorm.Sample( LinearSample, Input.Tex ).a;
	//vColor *=  (1-shadow)/2 + 0.5;

	//スカイボックスを上書きしないために、αテスト（暫定）
	if(vColor.a == 0) discard;




	vColor = max(vColor, float4(0,0,0,0));	// なんか、凄い小さい値が混じって、トーンマップを破壊することがある…
	break;



case DR_MODE_MAT_AMBIENT:		// マテリアルアンビエント
    vColor = FPtexAmb.Sample( PointSampler, Input.Tex );
	break;
case DR_MODE_MAT_DIFFUSE:		// ディフューズ
    vColor = FPtexDiff.Sample( PointSampler, Input.Tex );
	break;
case DR_MODE_MAT_SPECULAR:		// スペキュラ
    vColor = FPtexDiff.Sample( PointSampler, Input.Tex ).aaaa;
	break;
case DR_MODE_REFLECTION:		// 反射
    vColor = FPtexRef.Sample( PointSampler, Input.Tex );
	break;

case DR_MODE_NORMAL_MAP:		// 法線
    vColor = float4(FPtexNorm.Sample( PointSampler, Input.Tex ));

	// 法線テクスチャがSNORMの場合
	if(0){
		vColor.z = -vColor.z;	// 青マップっぽくするためにZ逆転
		vColor = float4((vColor + float4(1,1,1,0)) / 2) ;
	}
	// 法線テクスチャがUNORMの場合
	if(1){
		vColor.z = 1 - vColor.z;	// 青マップっぽくするためにZ逆転
	}
	break;
case DR_MODE_VIEW_POS:		// 位置
	vColor = FPtexPos.Sample( PointSampler, Input.Tex );
	vColor /= 100.0f;
	break;
case DR_MODE_DEPTH:		// 深度バッファ
/*
	float fDepth = FPtexDepth.Sample( PointSampler, Input.Tex ).r;
	float2 rpojXY = Input.Tex * 2 - float2(1.0f, 1.0f);
	float4 fDepthSample = mul( float4( rpojXY,  fDepth, 1), g_mInvProj );
	fDepth = fDepthSample.z / fDepthSample.w / g_FarClip;
	vColor = float4(fDepth,fDepth,fDepth,1);
*/
	// カメラカラの距離 = 深度
	float len2 = length ( g_PosEye.xyz - FPtexPos.Sample( PointSampler, Input.Tex ).xyz);
	float fDepth = len2 / g_PosEye.w;
	vColor = float4(fDepth,fDepth,fDepth,1);
	break;
case DR_MODE_LIGHT_AMBIENT:		// ディフューズライト
case DR_MODE_LIGHT_DIFF:		// スペキュラライト
case DR_MODE_LIGHT_SPECULAR:		// スペキュラライト
case DR_MODE_ENVIRONMENT:
case DR_MODE_EMISSIVE_RESULT:		// スペキュラライト
	vColor = FPtexLightResult.Sample( PointSampler, Input.Tex );
	break;
case DR_MODE_SHADOW:		// 影
	//float color = FPtexNorm.Sample( PointSampler, Input.Tex ).a;
	// vColor = float4(color,color,color,1);
	vColor = FPtexLightResult.Sample( PointSampler, Input.Tex );
	break;
case DR_MODE_SHADOW_TEX:		// 影テクスチャ
	vColor = FPtexPShadow.Sample( PointSampler, Input.Tex );
	break;
default :
	break;
	}
    return float4( vColor.rgb, 1.0f );
}

int final_path_mode;

PixelShader ps[] = {
	CompileShader( ps_4_0, FinalPass(0)),
	CompileShader( ps_4_0, FinalPass(1)),
	CompileShader( ps_4_0, FinalPass(2)),
	CompileShader( ps_4_0, FinalPass(3)),
	CompileShader( ps_4_0, FinalPass(4)),
	CompileShader( ps_4_0, FinalPass(5)),
	CompileShader( ps_4_0, FinalPass(6)),
	CompileShader( ps_4_0, FinalPass(7)),
	CompileShader( ps_4_0, FinalPass(8)),
	CompileShader( ps_4_0, FinalPass(9)),
	CompileShader( ps_4_0, FinalPass(10)),
	CompileShader( ps_4_0, FinalPass(11)),
	CompileShader( ps_4_0, FinalPass(12)),
	CompileShader( ps_4_0, FinalPass(13)),
	CompileShader( ps_4_0, FinalPass(14)),
	CompileShader( ps_4_0, FinalPass(15)),
};



technique10 FinalPass_FP0
{
    pass p0
    {
        SetVertexShader( CompileShader( vs_4_0, QuadVS() ) );
        SetGeometryShader( NULL );
        SetPixelShader( ps[final_path_mode] );
        
		SetBlendState( NoBlend, float4( 0.0f, 0.0f, 0.0f, 0.0f ), 0xFFFFFFFF );
        SetDepthStencilState( DisableDepth, 1 );
    }
}