sampler TextureSampler : register(s0);

float4 main_ps(float2 texCoord : TEXCOORD0) : COLOR0
{
    float3 color = tex2D(TextureSampler, texCoord).xyz;

    color = color / (color + float3(1.0, 1.0, 1.0));
    float exposureConstant = 1.0 / 2.2;
    color = pow(color, float3(exposureConstant, exposureConstant, exposureConstant));

    return float4(color, 1.0);
}

Technique DeferredPBR
{
    Pass
    {
        PixelShader = compile ps_3_0 main_ps();
    }
}