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62 lines
2.3 KiB
C++
62 lines
2.3 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 <Atom/RHI/ScopeProducer.h>
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#include <Atom/RPI.Public/Pass/AttachmentReadback.h>
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#include <Atom/RPI.Public/Pass/Pass.h>
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#include <Atom/Feature/DiffuseGlobalIllumination/DiffuseProbeGridFeatureProcessorInterface.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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class DiffuseProbeGrid;
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enum class DiffuseProbeGridReadbackState
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{
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Idle,
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Initializing,
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Irradiance,
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Distance,
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ProbeData,
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Complete
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};
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//! This class contains functionality necessary to read back the DiffuseProbeGrid textures, which
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//! allows them to be saved as assets to run the DiffuseProbeGrid in non-realtime mode.
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class DiffuseProbeGridTextureReadback final
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{
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public:
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DiffuseProbeGridTextureReadback(DiffuseProbeGrid* diffuseProbeGrid);
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~DiffuseProbeGridTextureReadback() = default;
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void BeginTextureReadback(DiffuseProbeGridBakeTexturesCallback callback);
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void Update(const AZ::Name& passName);
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void FrameBegin(AZ::RPI::Pass::FramePrepareParams& params);
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bool IsIdle() const { return m_readbackState == DiffuseProbeGridReadbackState::Idle; }
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private:
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DiffuseProbeGrid* m_diffuseProbeGrid = nullptr;
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DiffuseProbeGridReadbackState m_readbackState = DiffuseProbeGridReadbackState::Idle;
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AZStd::shared_ptr<AZ::RPI::AttachmentReadback> m_attachmentReadback;
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DiffuseProbeGridBakeTexturesCallback m_callback;
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AZ::RPI::AttachmentReadback::ReadbackResult m_irradianceReadbackResult;
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AZ::RPI::AttachmentReadback::ReadbackResult m_distanceReadbackResult;
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AZ::RPI::AttachmentReadback::ReadbackResult m_probeDataReadbackResult;
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// number of frames to delay before starting the texture readbacks, this allows the textures to settle
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static constexpr int32_t DefaultNumInitializationFrames = 50;
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int32_t m_remainingInitializationFrames = DefaultNumInitializationFrames;
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};
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} // namespace Render
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} // namespace AZ
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