Added a frame delay before activating SSR, several visual quality improvements

Signed-off-by: dmcdiar <dmcdiar@amazon.com>
2021-11-18 13:10:07 -07:00
parent 7213e2cd87
commit 7f4ab7a1c2
20 changed files with 538 additions and 174 deletions
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) Contributors to the Open 3D Engine Project.
+ * For complete copyright and license terms please see the LICENSE at the root of this distribution.
+ *
+ * SPDX-License-Identifier: Apache-2.0 OR MIT
+ *
+ */
+
+#include "ReflectionScreenSpaceTracePass.h"
+#include <Atom/RPI.Public/Pass/PassSystemInterface.h>
+#include <Atom/RPI.Public/Pass/PassFilter.h>
+#include <Atom/RPI.Public/RenderPipeline.h>
+#include <Atom/RPI.Public/Image/ImageSystemInterface.h>
+#include <Atom/RPI.Public/Image/AttachmentImagePool.h>
+
+namespace AZ
+{
+    namespace Render
+    {
+        RPI::Ptr<ReflectionScreenSpaceTracePass> ReflectionScreenSpaceTracePass::Create(const RPI::PassDescriptor& descriptor)
+        {
+            RPI::Ptr<ReflectionScreenSpaceTracePass> pass = aznew ReflectionScreenSpaceTracePass(descriptor);
+            return AZStd::move(pass);
+        }
+
+        ReflectionScreenSpaceTracePass::ReflectionScreenSpaceTracePass(const RPI::PassDescriptor& descriptor)
+            : RPI::FullscreenTrianglePass(descriptor)
+        {
+        }
+
+        void ReflectionScreenSpaceTracePass::BuildInternal()
+        {
+            Data::Instance<RPI::AttachmentImagePool> pool = RPI::ImageSystemInterface::Get()->GetSystemAttachmentPool();
+
+            // retrieve the previous frame image attachment from the pass
+            AZ_Assert(m_ownedAttachments.size() == 3, "ReflectionScreenSpaceTracePass must have the following attachment images defined: ReflectionImage, DownSampledDepthImage, and PreviousFrameImage");
+            RPI::Ptr<RPI::PassAttachment> previousFrameImageAttachment = m_ownedAttachments[2];
+            
+            // update the image attachment descriptor to sync up size and format
+            previousFrameImageAttachment->Update();
+            
+            // change the lifetime since we want it to live between frames
+            previousFrameImageAttachment->m_lifetime = RHI::AttachmentLifetimeType::Imported;
+            
+            // set the bind flags
+            RHI::ImageDescriptor& imageDesc = previousFrameImageAttachment->m_descriptor.m_image;
+            imageDesc.m_bindFlags |= RHI::ImageBindFlags::Color | RHI::ImageBindFlags::ShaderReadWrite;
+            
+            // create the image attachment
+            RHI::ClearValue clearValue = RHI::ClearValue::CreateVector4Float(0, 0, 0, 0);
+            m_previousFrameImageAttachment = RPI::AttachmentImage::Create(*pool.get(), imageDesc, Name(previousFrameImageAttachment->m_path.GetCStr()), &clearValue, nullptr);
+
+            previousFrameImageAttachment->m_path = m_previousFrameImageAttachment->GetAttachmentId();
+            previousFrameImageAttachment->m_importedResource = m_previousFrameImageAttachment;
+        }
+
+    }   // namespace RPI
+}   // namespace AZ