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57 lines
2.3 KiB
C++
57 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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#include "ReflectionScreenSpaceCompositePass.h"
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#include "ReflectionScreenSpaceBlurPass.h"
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#include <Atom/RPI.Public/Pass/PassSystemInterface.h>
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#include <Atom/RPI.Public/Pass/PassFilter.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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RPI::Ptr<ReflectionScreenSpaceCompositePass> ReflectionScreenSpaceCompositePass::Create(const RPI::PassDescriptor& descriptor)
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{
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RPI::Ptr<ReflectionScreenSpaceCompositePass> pass = aznew ReflectionScreenSpaceCompositePass(descriptor);
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return AZStd::move(pass);
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}
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ReflectionScreenSpaceCompositePass::ReflectionScreenSpaceCompositePass(const RPI::PassDescriptor& descriptor)
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: RPI::FullscreenTrianglePass(descriptor)
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{
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}
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void ReflectionScreenSpaceCompositePass::CompileResources([[maybe_unused]] const RHI::FrameGraphCompileContext& context)
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{
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if (!m_shaderResourceGroup)
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{
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return;
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}
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RPI::PassFilter passFilter = RPI::PassFilter::CreateWithPassName(AZ::Name("ReflectionScreenSpaceBlurPass"), GetRenderPipeline());
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RPI::PassSystemInterface::Get()->ForEachPass(passFilter, [this](RPI::Pass* pass) -> RPI::PassFilterExecutionFlow
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{
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Render::ReflectionScreenSpaceBlurPass* blurPass = azrtti_cast<ReflectionScreenSpaceBlurPass*>(pass);
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// compute the max mip level based on the available mips in the previous frame image, and capping it
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// to stay within a range that has reasonable data
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const uint32_t MaxNumRoughnessMips = 8;
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uint32_t maxMipLevel = AZStd::min(MaxNumRoughnessMips, blurPass->GetNumBlurMips()) - 1;
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auto constantIndex = m_shaderResourceGroup->FindShaderInputConstantIndex(Name("m_maxMipLevel"));
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m_shaderResourceGroup->SetConstant(constantIndex, maxMipLevel);
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return RPI::PassFilterExecutionFlow::StopVisitingPasses;
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});
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FullscreenTrianglePass::CompileResources(context);
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}
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} // namespace RPI
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} // namespace AZ
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