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58 lines
2.4 KiB
C++
58 lines
2.4 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/RHI.Reflect/Size.h>
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#include <Atom/RPI.Public/Pass/RasterPass.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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//! Checkerboard pass renders scene to a multi-sample target with checkerboard pattern
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//! The checkerboard will be shifted one pixel between odd and even frames
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//! In this customized pass, it creates two imported attachment images to save last frame's color and depth buffer
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//! And it also shifts the viewport for the checkerboard pattern
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class CheckerboardPass final
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: public RPI::RasterPass
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{
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using Base = RPI::RasterPass;
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AZ_RPI_PASS(CheckerboardPass);
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public:
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AZ_RTTI(CheckerboardPass, "{C78A4C90-3915-4D8C-80BE-3698CF72C2C1}", Base);
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AZ_CLASS_ALLOCATOR(CheckerboardPass, SystemAllocator, 0);
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~CheckerboardPass() = default;
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static RPI::Ptr<CheckerboardPass> Create(const RPI::PassDescriptor& descriptor);
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Data::Instance<RPI::AttachmentImage> GetAttachmentImage(Name attachmentName, uint8_t frameOffset);
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protected:
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// Pass overrides...
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void FrameBeginInternal(FramePrepareParams params);
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void BuildInternal() override;
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void FrameEndInternal() override;
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private:
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CheckerboardPass() = delete;
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explicit CheckerboardPass(const RPI::PassDescriptor& descriptor);
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// PassAttachment name to AttachmentImages mapping
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// Each pass output image attachment has two AttachmentImage.
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// One for last frame and one for current frame. They will be used in checkerboard resolve
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AZStd::unordered_map<Name, AZStd::array<Data::Instance<RPI::AttachmentImage>, 2>> m_imageAttachments;
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uint8_t m_frameOffset = 0;
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};
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} // namespace Render
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} // namespace AZ
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