/*
 * 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 "DepthOfField.azsli"

ShaderResourceGroup PerPass : SRG_PerPass
{
    Texture2D<float4> m_depthTexture;
    RWBuffer<float> m_outputFocusDepth;
    float2 m_autoFocusScreenPosition;

    Sampler LinearSampler
    {
        MinFilter = Linear;
        MagFilter = Linear;
        MipFilter = Linear;
        AddressU = Clamp;
        AddressV = Clamp;
        AddressW = Clamp;
    };
}

[numthreads(1, 1, 1)]
void MainCS(uint3 dispatch_id : SV_DispatchThreadID)
{
    float depth = PerPass::m_depthTexture.SampleLevel(PerPass::LinearSampler, PerPass::m_autoFocusScreenPosition, 0).x;
    PerPass::m_outputFocusDepth[0] = InvertDepth(depth);
}