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59 lines
2.2 KiB
C++
59 lines
2.2 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/RPI.Public/Pass/FullscreenTrianglePass.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 pass takes performs a separable Gaussian blur of the input reflection image
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//! to the lower mip levels of that image. The blurred mips are used as roughness levels
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//! when applying reflection data to a surface material.
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class ReflectionScreenSpaceBlurChildPass
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: public RPI::FullscreenTrianglePass
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{
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AZ_RPI_PASS(ReflectionScreenSpaceBlurChildPass);
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public:
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AZ_RTTI(Render::ReflectionScreenSpaceBlurChildPass, "{238E4D6C-3213-4BA2-8DFE-EAC469346E77}", FullscreenTrianglePass);
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AZ_CLASS_ALLOCATOR(Render::ReflectionScreenSpaceBlurChildPass, SystemAllocator, 0);
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//! Creates a new pass without a PassTemplate
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static RPI::Ptr<ReflectionScreenSpaceBlurChildPass> Create(const RPI::PassDescriptor& descriptor);
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enum PassType
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{
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Vertical,
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Horizontal
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};
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void SetType(PassType passType) { m_passType = passType; }
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void SetMipLevel(uint32_t mipLevel) { m_mipLevel = mipLevel; }
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private:
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explicit ReflectionScreenSpaceBlurChildPass(const RPI::PassDescriptor& descriptor);
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// ComputePass Overrides...
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void FrameBeginInternal(FramePrepareParams params) override;
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void CompileResources(const RHI::FrameGraphCompileContext& context) override;
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RHI::ShaderInputNameIndex m_imageWidthIndex = "m_imageWidth";
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RHI::ShaderInputNameIndex m_imageHeightIndex = "m_imageHeight";
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RHI::ShaderInputNameIndex m_outputScaleIndex = "m_outputScale";
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bool m_updateSrg = false;
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PassType m_passType;
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uint32_t m_mipLevel = 0;
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RHI::Size m_imageSize;
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float m_outputScale = 1.0f;
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};
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} // namespace RPI
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} // namespace AZ
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