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/*
Define the shader permutations for code generation
%% MUX_BEGIN %%
%% MUX_END %%
*/

struct VS_QUAD_OUTPUT
{
    float4 vPos : SV_POSITION;
    sample float2 vTex : TEXCOORD0;
};

float3 tonemap(float3 C)
{
	// Filmic -- model film properties
	C = max(0, C - 0.004);
	return (C*(6.2*C+0.5))/(C*(6.2*C+1.7)+0.06);
}

Texture2DMS<float4> tScene : register(t0);

float4 main(VS_QUAD_OUTPUT input, uint sampleID : SV_SAMPLEINDEX) : SV_Target0
{
    float3 output = float3(0, 0, 0);
    float3 s_hdr = tScene.Load(int2(input.vPos.xy), sampleID).rgb;
    output = tonemap(s_hdr);
    return float4(output, 1);
}