/*
 * Copyright (c) Contributors to the Open 3D Engine Project.
 * For complete copyright and license terms please see the LICENSE at the root of this distribution.
 *
 * SPDX-License-Identifier: Apache-2.0 OR MIT
 *
 */

#include <Atom/Features/SrgSemantics.azsli>

#include <Atom/Features/PostProcessing/FullscreenPixelInfo.azsli>
#include <Atom/Features/PostProcessing/FullscreenVertex.azsli>
#include <Atom/Features/PostProcessing/PostProcessUtil.azsli>
#include <Atom/Features/PostProcessing/Aces.azsli>

ShaderResourceGroup PassSrg : SRG_PerPass
{
    Texture2D<float4> m_framebuffer;
    Sampler LinearSampler
    {
        MinFilter = Linear;
        MagFilter = Linear;
        MipFilter = Linear;
        AddressU = Clamp;
        AddressV = Clamp;
        AddressW = Clamp;
    };
}

PSOutput MainPS(VSOutput IN)
{
    PSOutput Out;

    float3 color = PassSrg::m_framebuffer.Sample(PassSrg::LinearSampler, IN.m_texCoord).rgb;
    // Convert to ACEScg color space
    float3 acescg = mul(XYZToAP1Mat, mul(D65ToD60Cat, mul(SRGBToXYZMat, color.rgb)));
    Out.m_color.rgb = acescg;
    Out.m_color.a = 1.0;

    return Out;
}