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108 lines
5.3 KiB
C++
108 lines
5.3 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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#pragma once
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#include <Atom/Feature/DiffuseProbeGrid/DiffuseProbeGridFeatureProcessorInterface.h>
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#include <DiffuseProbeGrid/DiffuseProbeGrid.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 manages DiffuseProbeGrids which generate diffuse global illumination
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class DiffuseProbeGridFeatureProcessor final
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: public DiffuseProbeGridFeatureProcessorInterface
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{
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public:
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AZ_RTTI(AZ::Render::DiffuseProbeGridFeatureProcessor, "{BCD232F9-1EBF-4D0D-A5F4-84AEC933A93C}", DiffuseProbeGridFeatureProcessorInterface);
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static void Reflect(AZ::ReflectContext* context);
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DiffuseProbeGridFeatureProcessor() = default;
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virtual ~DiffuseProbeGridFeatureProcessor() = default;
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// DiffuseProbeGridFeatureProcessorInterface overrides
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DiffuseProbeGridHandle AddProbeGrid(const AZ::Transform& transform, const AZ::Vector3& extents, const AZ::Vector3& probeSpacing) override;
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void RemoveProbeGrid(DiffuseProbeGridHandle& probeGrid) override;
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bool IsValidProbeGridHandle(const DiffuseProbeGridHandle& probeGrid) const override { return (probeGrid.get() != nullptr); }
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bool ValidateExtents(const DiffuseProbeGridHandle& probeGrid, const AZ::Vector3& newExtents) override;
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void SetExtents(const DiffuseProbeGridHandle& probeGrid, const AZ::Vector3& extents) override;
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void SetTransform(const DiffuseProbeGridHandle& probeGrid, const AZ::Transform& transform) override;
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bool ValidateProbeSpacing(const DiffuseProbeGridHandle& probeGrid, const AZ::Vector3& newSpacing) override;
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void SetProbeSpacing(const DiffuseProbeGridHandle& probeGrid, const AZ::Vector3& probeSpacing) override;
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void SetViewBias(const DiffuseProbeGridHandle& probeGrid, float viewBias) override;
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void SetNormalBias(const DiffuseProbeGridHandle& probeGrid, float normalBias) override;
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void SetAmbientMultiplier(const DiffuseProbeGridHandle& probeGrid, float ambientMultiplier) override;
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void Enable(const DiffuseProbeGridHandle& probeGrid, bool enable) override;
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void SetGIShadows(const DiffuseProbeGridHandle& probeGrid, bool giShadows) override;
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void SetUseDiffuseIbl(const DiffuseProbeGridHandle& probeGrid, bool useDiffuseIbl) override;
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// FeatureProcessor overrides
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void Activate() override;
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void Deactivate() override;
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void Simulate(const FeatureProcessor::SimulatePacket& packet) override;
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// retrieve the full list of diffuse probe grids
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using DiffuseProbeGridVector = AZStd::vector<AZStd::shared_ptr<DiffuseProbeGrid>>;
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DiffuseProbeGridVector& GetProbeGrids() { return m_diffuseProbeGrids; }
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private:
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AZ_DISABLE_COPY_MOVE(DiffuseProbeGridFeatureProcessor);
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// create the box vertex and index streams, which are used to render the probe volumes
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void CreateBoxMesh();
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// RPI::SceneNotificationBus::Handler overrides
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void OnRenderPipelinePassesChanged(RPI::RenderPipeline* renderPipeline) override;
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void OnRenderPipelineAdded(RPI::RenderPipelinePtr pipeline) override;
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void OnRenderPipelineRemoved(RPI::RenderPipeline* pipeline) override;
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void UpdatePipelineStates();
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void UpdatePasses();
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// list of diffuse probe grids
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const size_t InitialProbeGridAllocationSize = 64;
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DiffuseProbeGridVector m_diffuseProbeGrids;
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// position structure for the box vertices
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struct Position
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{
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float m_x = 0.0f;
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float m_y = 0.0f;
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float m_z = 0.0f;
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};
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// buffer pool for the vertex and index buffers
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RHI::Ptr<RHI::BufferPool> m_bufferPool;
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// box mesh rendering buffers
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// note that the position and index views are stored in DiffuseProbeGridRenderData
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AZStd::vector<Position> m_boxPositions;
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AZStd::vector<uint16_t> m_boxIndices;
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RHI::Ptr<RHI::Buffer> m_boxPositionBuffer;
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RHI::Ptr<RHI::Buffer> m_boxIndexBuffer;
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RHI::InputStreamLayout m_boxStreamLayout;
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// contains the rendering data needed by probe grids
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// it is loaded by the feature processor and passed to the probes to avoid loading it in each probe
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DiffuseProbeGridRenderData m_probeGridRenderData;
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// indicates that the probe grid list needs to be re-sorted, necessary when a probe grid is resized
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bool m_probeGridSortRequired = false;
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// indicates the the diffuse probe grid render pipeline state needs to be updated
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bool m_needUpdatePipelineStates = false;
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};
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} // namespace Render
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} // namespace AZ
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