Quote:

---

the shader from "BoH_Havoc" looks not so good.

---

//
//---------------------------------------------------------------------- EXTERNAL PARAMETERS
//

float	fExposure;
float	fGamma;

//
//---------------------------------------------------------------------------- INPUT OUTPUT
//

sampler2D HDRImage	 : register(ps, s0);
sampler2D BloomImage : register(ps, s1);

struct VS_INPUT
{
    float4 Pos			: POSITION;
    float2 TexCoord0    : TEXCOORD0;
};

struct VS_OUTPUT
{
    float4 Position		: POSITION;
    float2 TexCoord0	: TEXCOORD0;
};

//
//----------------------------------------------------------------------------- VERTEXSHADER
//

VS_OUTPUT VS_Exposure( VS_INPUT input )
{
    VS_OUTPUT o = (VS_OUTPUT)0;

    o.Position  = input.Pos;
    o.TexCoord0 = input.TexCoord0;
	
    return o;
}

//
//----------------------------------------------------------------------------- PIXELSHADER
//

half4 PS_Exposure( VS_OUTPUT input, uniform bool bloom ) : COLOR
{
	half4 c	= tex2D( HDRImage, input.TexCoord0 ) * fExposure;
	if ( bloom == true )
	{
		c.rgb += tex2D( BloomImage, input.TexCoord0 ) * ( 1.0 - c );
	}

	return c;
}

//
//------------------------------------------------------------------------------- TECHNIQUES
//

technique Exposure
{
    pass p0
    {
        VertexShader = compile vs_2_0 VS_Exposure();
        PixelShader  = compile ps_2_0 PS_Exposure( false );

		MinFilter[0]	= Linear;
		MagFilter[0]	= Linear;
		MipFilter[0]	= Point;
		AddressU[0]		= Clamp;
		AddressV[0]		= Clamp;
    }
}

technique ExposureBloom
{
    pass p0
    {
        VertexShader = compile vs_2_0 VS_Exposure();
        PixelShader  = compile ps_2_0 PS_Exposure( true );

		MinFilter[0]	= Linear;
		MagFilter[0]	= Linear;
		MipFilter[0]	= Point;
		AddressU[0]		= Clamp;
		AddressV[0]		= Clamp;

		MinFilter[1]	= Linear;
		MagFilter[1]	= Linear;
		MipFilter[1]	= Point;
		AddressU[1]		= Clamp;
		AddressV[1]		= Clamp;
    }
}