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50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#pragma once
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#include <AzCore/Memory/SystemAllocator.h>
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#include <Atom/RHI/CommandList.h>
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#include <Atom/RHI/DrawItem.h>
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#include <Atom/RHI/ScopeProducer.h>
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#include <Atom/RHI.Reflect/ShaderResourceGroupLayoutDescriptor.h>
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#include <Atom/RPI.Public/Pass/ComputePass.h>
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#include <Atom/RPI.Public/Shader/Shader.h>
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#include <Atom/RPI.Public/Shader/ShaderResourceGroup.h>
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namespace AZ
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{
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namespace Render
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{
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//! This class generates a histogram of luminance values for the input color buffer.
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class LuminanceHistogramGeneratorPass final
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: public RPI::ComputePass
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{
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AZ_RPI_PASS(LuminanceHistogramGeneratorPass);
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public:
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AZ_RTTI(LuminanceHistogramGeneratorPass, "{062D0696-B159-491C-9ECC-AA02767ED4CF}", RPI::ComputePass);
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AZ_CLASS_ALLOCATOR(LuminanceHistogramGeneratorPass, SystemAllocator, 0);
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~LuminanceHistogramGeneratorPass() = default;
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static RPI::Ptr<LuminanceHistogramGeneratorPass> Create(const RPI::PassDescriptor& descriptor);
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void BuildCommandListInternal(const RHI::FrameGraphExecuteContext& context) override;
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protected:
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LuminanceHistogramGeneratorPass(const RPI::PassDescriptor& descriptor);
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virtual void BuildInternal() override;
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void CreateHistogramBuffer();
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void AttachHistogramBuffer();
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AZ::RHI::Size GetColorBufferResolution();
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Data::Instance<RPI::Buffer> m_histogram;
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};
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} // namespace Render
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} // namespace AZ
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