//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// ENBSeries effect file
// http://enbdev.com
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//THIS IS HLSL FILE FORMAT FOR EXECUTING ADDITIONAL
//POST PROCESSING EFFECTS. MAKE THE COPY BEFORE CHANGING IT!

//WARNING! This is old standart file, compatible with ENBSeries pre 0.101



float	EVignetteAmount=0.6;
float	EVignetteCurve=3.0;
float	EVignetteRadius=1.4; //doubled for a little optimization
float3	EVignetteColor=float3(0.2, 0.00, 0.00); //black



//+++++++++++++++++++++++++++++
//external parameters, do not modify
//+++++++++++++++++++++++++++++
//keyboard controlled temporary variables (in some versions exists in the config file). Press and hold key 1,2,3...8 together with PageUp or PageDown to modify. By default all set to 1.0
float	tempF1;
float	tempF2;
float	tempF3;
float	tempF4;
float	tempF5;
float	tempF6;
float	tempF7;
float	tempF8;
float	tempF9;
float	tempF0;
//x=generic timer in range 0..1, period of 16777216 ms (4.6 hours), w=frame time elapsed (in seconds)
float4	Timer;
float	ScreenSize;
float	ScreenScaleY;



//textures
texture2D texColor;
texture2D texDepth;
texture2D 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 SamplerDepth = sampler_state
{
	Texture   = <texDepth>;
	MinFilter = POINT;
	MagFilter = POINT;
	MipFilter = 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;
}



float4 PS_Process(VS_OUTPUT_POST IN, float2 vPos : VPOS) : COLOR
{
	float4	res;
	float3	origcolor=tex2D(SamplerColor, IN.txcoord.xy);

	float2	uv=(IN.txcoord.xy-0.5)*EVignetteRadius;
	float	vignette=saturate(dot(uv.xy, uv.xy));
	vignette=pow(vignette, EVignetteCurve);
	res.xyz=lerp(origcolor.xyz, EVignetteColor, vignette*EVignetteAmount);

	res.w=1.0;
	return res;
}



//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
technique PostProcess
{
	pass P0
	{

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

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