//++++++++++++++++++++++++++
// CAMERA EFFECTS FOR ENBSERIES
// Adds lens distortion, chromatic aberration & blurry vignette effect.
//
// Original effect.txy by Boris Vorontsov
// Sharpening/Noise code by Boris Vorontsov
// Original Lens Distortion Algorithm from SSontech
//
// Modified & Created by icelaglace
//++++++++++++++++++++++++++

// Boris Vorontsov's sharpening
#define ESHARPENING
#define ESHARPENINGCOLOR
// Modified noise effect to add non-monochromatic noise
#define ENOISE
// Adds blur on the edges on the screen
#define BLURRYVIGNETTE

//++++++++
//Tweakable values
//++++++++
/////////////////////////
// Standard effect.txt values
float SamplingRange=1; 
float SharpeningAmount=4;
float NoiseAmount=2.0;

// Blurry vignette values
float BlurSamplingRange=0.5;
float BlurPower=32.5;
float BlurVignetteCurve=1.5;
float BlurVignetteRadius=1.6; 

// Lens distortion values
float ChromaticAmount = 1.4; // Amount of chromatic aberration on the edges
float LensSize = 0.6;   // 0.5 = Original image size; 1.0 = Zoomed
float LensDistortion = 0.1;   // Can be negative to stretch the image
float LensDistortionCubic = 0.1;


#define E_SHADER_3_0


//keyboard controled variables
float tempF1;
float tempF2;
float tempF3;
float tempF4;
float tempF5;
float tempF6;
float tempF7;
float tempF8;
float tempF9;
float tempF0;




float ScreenSize;
float ScreenScaleY;





//textures
texture2D texColor;
texture texNoise;

sampler2D SamplerColor = sampler_state
{
Texture   = <texColor>;
MinFilter = LINEAR;
MagFilter = LINEAR;
MipFilter = NONE;//NONE;
AddressU  = Clamp;
AddressV  = Clamp;
SRGBTexture=FALSE;
MaxMipLevel=0;
MipMapLodBias=0;
};

sampler2D SamplerNoise = sampler_state
{
Texture = <texNoise>;
MinFilter = POINT;
MagFilter = POINT;
MipFilter = NONE;//NONE;
AddressU = Wrap;
AddressV = Wrap;
SRGBTexture=false;
MaxMipLevel=0;
MipMapLodBias=0;
};  


struct VS_OUTPUT_POST {
float4 vpos  : POSITION;
float2 txcoord : TEXCOORD0;
};

struct VS_INPUT_POST {
float3 pos  : POSITION;
float2 txcoord : TEXCOORD0;
};





//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VS_OUTPUT_POST VS_PostProcess(VS_INPUT_POST IN)
{
VS_OUTPUT_POST OUT;

float4 pos=float4(IN.pos.x,IN.pos.y,IN.pos.z,1.0);

OUT.vpos=pos;
OUT.txcoord.xy=IN.txcoord.xy;

return OUT;
}


// Blur Pass
float4 PS_ProcessBlur(VS_OUTPUT_POST IN, float2 vPos : VPOS) : COLOR
{
	float4 res;
	float4 coord=0.0;

	coord.xy=IN.txcoord.xy;
	float4 origcolor;

	coord.w=0.0;


	origcolor=tex2Dlod(SamplerColor, coord);

	// coord.x=IN.txcoord.x-(1.5/ScreenSize);
	// float4 lshift=tex2Dlod(SamplerColor, coord);
	// coord.x=IN.txcoord.x+(1.5/ScreenSize);
	// float4 rshift=tex2Dlod(SamplerColor, coord);


	float2 offset[16]=
	{
	 float2(1.0, 1.0),
	 float2(-1.0, -1.0),
	 float2(-1.0, 1.0),
	 float2(1.0, -1.0),

	 float2(1.0, 0.0),
	 float2(-1.0, 0.0),
	 float2(0.0, 1.0),
	 float2(0.0, -1.0),

	 float2(1.41, 0.0),
	 float2(-1.41, 0.0),
	 float2(0.0, 1.41),
	 float2(0.0, -1.41),

	 float2(1.41, 1.41),
	 float2(-1.41, -1.41),
	 float2(-1.41, 1.41),
	 float2(1.41, -1.41)
	};
	int i=0;

	float4 tcol=origcolor;
	float2 invscreensize=1.0/ScreenSize;
	invscreensize.y=invscreensize.y/ScreenScaleY;
	//for (i=0; i<8; i++) //higher quality
	//for (i=0; i<4; i++)
	for (i=0; i<16; i++)
	{
	 float2 tdir=offset[i].xy;
	 coord.xy=IN.txcoord.xy+tdir.xy*invscreensize*BlurSamplingRange;//*1.0;
	 float4 ct=tex2Dlod(SamplerColor, coord);

	 tcol+=ct;
	}
	//tcol*=0.2; // 1.0/(4+1)
	//tcol*=0.111; // 1.0/(8+1)  //higher quality
	tcol*=0.05882353;

	float2	uv=(IN.txcoord.xy-0.5)*BlurVignetteRadius;
	float	vignette=saturate(dot(uv.xy, uv.xy));
	vignette=pow(vignette, BlurVignetteCurve);
	//res.xyz=tcol.xyz*0.2;
#ifndef BLURRYVIGNETTE
	res.xyz=lerp(origcolor.xyz, tcol.xyz, vignette*0);
#else
	res.xyz=lerp(origcolor.xyz, tcol.xyz, vignette*BlurPower);
#endif

//res.xyz=tcol.xyz;

	res.w=1.0;
	return res;
}



float4 PS_PostProcess(VS_OUTPUT_POST IN, float2 vPos : VPOS) : COLOR
{
float4 res;
float4 coord=0.0;

coord.xy=IN.txcoord.xy;
float4 origcolor;

coord.w=0.0;


origcolor=tex2Dlod(SamplerColor, coord);

// coord.x=IN.txcoord.x-(1.5/ScreenSize);
// float4 lshift=tex2Dlod(SamplerColor, coord);
// coord.x=IN.txcoord.x+(1.5/ScreenSize);
// float4 rshift=tex2Dlod(SamplerColor, coord);


float2 offset[8]=
{
float2(1.0, 1.0),
float2(-1.0, -1.0),
float2(-1.0, 1.0),
float2(1.0, -1.0),

float2(1.41, 0.0),
float2(-1.41, 0.0),
float2(0.0, 1.41),
float2(0.0, -1.41)
};
int i=0;

float4 tcol=origcolor;
float invscreensize=1.0/ScreenSize;
//for (i=0; i<8; i++) //higher quality
for (i=0; i<8; i++)
{
float2 tdir=offset[i].xy;
coord.xy=IN.txcoord.xy+tdir.xy*invscreensize*SamplingRange;//*1.0;
float4 ct=tex2Dlod(SamplerColor, coord);

tcol+=ct;
}
tcol*=0.111; // 1.0/(4+1)
//tcol*=0.111; // 1.0/(8+1)  //higher quality


/*
//not interesting
#ifdef EBLURRING
//blur
res=tcol;
#endif
*/

//sharp
#ifdef ESHARPENING

#ifdef ESHARPENINGCOLOR
//color
res=origcolor*(1.0+((origcolor-tcol)*SharpeningAmount));
#else
//non color
float difffact=dot((origcolor.xyz-tcol.xyz), 0.333);
res=origcolor*(1.0+difffact*SharpeningAmount);
#endif

//less sharpening for bright pixels
float rgray=origcolor.z; //blue fit well
//float rgray=max(origcolor.x, max(origcolor.y, origcolor.z));
rgray=pow(rgray, 3.0);
res=lerp(res, origcolor, saturate(rgray));

#endif




//grain noise
#ifdef ENOISE
float origgray=max(res.x, res.y);//dot(res.xyz, 0.333);
origgray=max(origgray, res.z);
coord.xy=IN.txcoord.xy*16.0 + origgray;
float4 cnoi=tex2Dlod(SamplerNoise, coord);
res=lerp(res, (cnoi.x+1)*res, NoiseAmount*saturate(1.0-origgray*0.5));
#endif


res.w=1.0;
return res;
}

float4 PS_PostProcess2(VS_OUTPUT_POST IN, float2 vPos : VPOS) : COLOR
{
float4 res;
float4 coord=0.0;

coord.xy=IN.txcoord.xy;
float4 origcolor;

coord.w=0.0;


origcolor=tex2Dlod(SamplerColor, coord);

// coord.x=IN.txcoord.x-(1.5/ScreenSize);
// float4 lshift=tex2Dlod(SamplerColor, coord);
// coord.x=IN.txcoord.x+(1.5/ScreenSize);
// float4 rshift=tex2Dlod(SamplerColor, coord);


float2 offset[8]=
{
 float2(1.0, 1.0),
 float2(-1.0, -1.0),
 float2(-1.0, 1.0),
 float2(1.0, -1.0),

 float2(1.41, 0.0),
 float2(-1.41, 0.0),
 float2(0.0, 1.41),
 float2(0.0, -1.41)
};
int i=0;

float4 tcol=origcolor;
float2 invscreensize=1.0/ScreenSize;
invscreensize.y=invscreensize.y/ScreenScaleY;
//for (i=0; i<8; i++) //higher quality
/*	for (i=0; i<4; i++)
{
 float2 tdir=offset[i].xy;
 coord.xy=IN.txcoord.xy+tdir.xy*invscreensize*SamplingRange;//*1.0;
 float4 ct=tex2Dlod(SamplerColor, coord);

 tcol+=ct;
}
tcol*=0.2; // 1.0/(4+1)
//tcol*=0.111; // 1.0/(8+1)  //higher quality
*/

float3 eta = float3(1.1+ChromaticAmount*0.9,1.1+ChromaticAmount*0.6,1.1+ChromaticAmount*0.3);
float2 center;
center.x = coord.x-0.5;
center.y = coord.y-0.5;
float LensZoom = 1.0/LensSize;

float r2 = (IN.txcoord.x-0.5) * (IN.txcoord.x-0.5) + (IN.txcoord.y-0.5) * (IN.txcoord.y-0.5);     
float f = 0;

if( LensDistortionCubic == 1.0){
	f = 1 + r2 * LensDistortion;
}else{
                f = 1 + r2 * (LensDistortion + LensDistortionCubic * sqrt(r2));
};

float x = f*LensZoom*(coord.x-0.5)+0.5;
float y = f*LensZoom*(coord.y-0.5)+0.5;
float2 rCoords = (f*eta.r)*LensZoom*(center.xy*0.5)+0.5;
float2 gCoords = (f*eta.g)*LensZoom*(center.xy*0.5)+0.5;
float2 bCoords = (f*eta.b)*LensZoom*(center.xy*0.5)+0.5;

//float3 inputDistord = tex2D(SamplerColor,float2(x,y));
float4 inputDistord = float4(tex2D(SamplerColor,rCoords).r , tex2D(SamplerColor,gCoords).g ,tex2D(SamplerColor,bCoords).b, tex2D(SamplerColor,float2(x,y)).a);
return float4(inputDistord.r,inputDistord.g,inputDistord.b,1);

res.w=1.0;
return res;
}



//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
technique PostProcess
{
   pass P0
   {
VertexShader = compile vs_3_0 VS_PostProcess();
PixelShader  = compile ps_3_0 FxaaPixelShader();

FogEnable=FALSE;
ALPHATESTENABLE=FALSE;
SEPARATEALPHABLENDENABLE=FALSE;
AlphaBlendEnable=FALSE;
FogEnable=FALSE;
SRGBWRITEENABLE=FALSE;
}
}

technique PostProcess2
{
   pass P0
   {
VertexShader = compile vs_3_0 VS_PostProcess();
PixelShader  = compile ps_3_0 FxaaPixelShader();

FogEnable=FALSE;
ALPHATESTENABLE=FALSE;
SEPARATEALPHABLENDENABLE=FALSE;
AlphaBlendEnable=FALSE;
FogEnable=FALSE;
SRGBWRITEENABLE=FALSE;
}
}

technique PostProcess3
{
   pass P0
   {
VertexShader = compile vs_3_0 VS_PostProcess();
PixelShader  = compile ps_3_0 FxaaPixelShader();

FogEnable=FALSE;
ALPHATESTENABLE=FALSE;
SEPARATEALPHABLENDENABLE=FALSE;
AlphaBlendEnable=FALSE;
FogEnable=FALSE;
SRGBWRITEENABLE=FALSE;
}
}

technique PostProcess4
{
   pass P0
   {
VertexShader = compile vs_3_0 VS_PostProcess();
PixelShader  = compile ps_3_0 FxaaPixelShader();

FogEnable=FALSE;
ALPHATESTENABLE=FALSE;
SEPARATEALPHABLENDENABLE=FALSE;
AlphaBlendEnable=FALSE;
FogEnable=FALSE;
SRGBWRITEENABLE=FALSE;
}
}

technique PostProcess5
{
  pass P0
  {

VertexShader = compile vs_3_0 VS_PostProcess();
PixelShader  = compile ps_3_0 PS_PostProcess5();

DitherEnable=FALSE;
ZEnable=FALSE;
CullMode=NONE;
ALPHATESTENABLE=FALSE;
SEPARATEALPHABLENDENABLE=FALSE;
AlphaBlendEnable=FALSE;
StencilEnable=FALSE;
FogEnable=FALSE;
SRGBWRITEENABLE=FALSE;
}
}
technique PostProcess6
{
pass P0
{

 VertexShader = compile vs_3_0 VS_PostProcess();
 PixelShader  = compile ps_3_0 PS_Process6();

 DitherEnable=FALSE;
 ZEnable=FALSE;
 CullMode=NONE;
 ALPHATESTENABLE=FALSE;
 SEPARATEALPHABLENDENABLE=FALSE;
 AlphaBlendEnable=FALSE;
 StencilEnable=FALSE;
 FogEnable=FALSE;
 SRGBWRITEENABLE=FALSE;
}
}
