bad eye melting effect

cc.fx

// to use this, copy the file to the "shaders" directory and rename it to cc.fx

static const float3 LUMINANCE_VECTOR = float3(0.2125, 0.7154, 0.0721);

float g_fGamma;
float g_fSaturation;
float g_fContrast;
float g_fBrightness;
float4 g_fColorFilter;
float2 g_fScreenSize;
float g_fNoiseTimer;

// the frame texture
sampler s0 : register(s0);

float4 SatGammaPS(in float2 uv : TEXCOORD0, uniform int bDoSat, uniform int bDoGamma, uniform int bDoContrBright) : COLOR
{
    float4 vColor = tex2D(s0, uv);
    float modulation = sin(6.0*g_fNoiseTimer);
    float intensity = (0.299*vColor.r + 0.587*vColor.g + 0.144*vColor.b);
    uv += float2(0.0,intensity*0.25)*modulation;
    vColor = tex2D(s0, uv);

    if (bDoSat)
    {
        float lumi = dot(vColor.xyz, LUMINANCE_VECTOR);
        vColor.xyz = lerp(lumi.xxx, vColor.xyz, g_fSaturation); // * g_fColorFilter.xyz;
    }
    if (bDoGamma)
    {
        vColor.xyz = pow(vColor.xyz, g_fGamma);
    }
    if (bDoContrBright)
    {
        // old not quite correct contrast formula used in T2 v1.25 / SS2 v2.46 and older
        //vColor.xyz = saturate(vColor.xyz * g_fContrast + g_fBrightness);

        vColor.xyz = saturate((vColor.xyz - 0.5) * g_fContrast + 0.5 + g_fBrightness);
    }

    return vColor;
}


// apply saturation/color filter, brightness/contrast and gamma
technique TeqBrSatGamma
{
    pass P0
    {
        PixelShader = compile ps_2_0 SatGammaPS(1, 1, 1);
    }
}

// apply brightness/contrast and gamma
technique TeqBrGamma
{
    pass P0
    {
        PixelShader = compile ps_2_0 SatGammaPS(0, 1, 1);
    }
}

// apply brightness/contrast and saturation/color
technique TeqBrSat
{
    pass P0
    {
        PixelShader = compile ps_2_0 SatGammaPS(1, 0, 1);
    }
}


// apply saturation/color filter and gamma
technique TeqSatGamma
{
    pass P0
    {
        PixelShader = compile ps_2_0 SatGammaPS(1, 1, 0);
    }
}

// apply only gamma
technique TeqGamma
{
    pass P0
    {
        PixelShader = compile ps_2_0 SatGammaPS(0, 1, 0);
    }
}

// apply only brightness/contrast
technique TeqBr
{
    pass P0
    {
        PixelShader = compile ps_2_0 SatGammaPS(0, 0, 1);
    }
}

// apply only saturation/color
technique TeqSat
{
    pass P0
    {
        PixelShader = compile ps_2_0 SatGammaPS(1, 0, 0);
    }
}

// plain copy
technique TeqCopy
{
    pass P0
    {
        PixelShader = compile ps_2_0 SatGammaPS(0, 0, 0);
    }
}