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121 lines
5.0 KiB
C++
121 lines
5.0 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 "AtomOutputFrameCapture.h"
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#include <Atom/RPI.Public/Pass/Specific/RenderToTexturePass.h>
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#include <Atom/RPI.Public/RenderPipeline.h>
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#include <Atom/RPI.Public/Scene.h>
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#include <Atom/RPI.Public/View.h>
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#include <Atom/RPI.Reflect/System/RenderPipelineDescriptor.h>
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#include <AzCore/Component/TransformBus.h>
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#include <AzCore/Math/MatrixUtils.h>
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#include <AzCore/Name/Name.h>
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#include <AzFramework/Entity/GameEntityContextBus.h>
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#include <AzFramework/Scene/Scene.h>
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#include <AzFramework/Scene/SceneSystemInterface.h>
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namespace TrackView
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{
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void AtomOutputFrameCapture::CreatePipeline(
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AZ::RPI::Scene& scene, const AZStd::string& pipelineName, const uint32_t width, const uint32_t height)
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{
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AZ::RPI::RenderPipelineDescriptor pipelineDesc;
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pipelineDesc.m_mainViewTagName = "MainCamera"; // must be "MainCamera"
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pipelineDesc.m_name = pipelineName;
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pipelineDesc.m_rootPassTemplate = "MainPipelineRenderToTexture";
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pipelineDesc.m_renderSettings.m_multisampleState.m_samples = 4;
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m_renderPipeline = AZ::RPI::RenderPipeline::CreateRenderPipeline(pipelineDesc);
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if (auto renderToTexturePass = azrtti_cast<AZ::RPI::RenderToTexturePass*>(m_renderPipeline->GetRootPass().get()))
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{
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renderToTexturePass->ResizeOutput(width, height);
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}
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scene.AddRenderPipeline(m_renderPipeline);
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// rendering pipeline has a tree structure
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m_passHierarchy.push_back(pipelineName);
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m_passHierarchy.push_back("CopyToSwapChain");
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// retrieve View from the camera that's animating
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AZ::Name viewName = AZ::Name("MainCamera");
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m_view = AZ::RPI::View::CreateView(viewName, AZ::RPI::View::UsageCamera);
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m_renderPipeline->SetDefaultView(m_view);
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}
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void AtomOutputFrameCapture::DestroyPipeline(AZ::RPI::Scene& scene)
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{
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scene.RemoveRenderPipeline(m_renderPipeline->GetId());
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m_passHierarchy.clear();
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m_renderPipeline.reset();
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m_view.reset();
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}
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void AtomOutputFrameCapture::UpdateView(const AZ::Matrix3x4& cameraTransform, const AZ::Matrix4x4& cameraProjection)
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{
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m_view->SetCameraTransform(cameraTransform);
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m_view->SetViewToClipMatrix(cameraProjection);
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}
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bool AtomOutputFrameCapture::BeginCapture(
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const AZ::RPI::AttachmentReadback::CallbackFunction& attachmentReadbackCallback, CaptureFinishedCallback captureFinishedCallback)
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{
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AZ::Render::FrameCaptureNotificationBus::Handler::BusConnect();
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m_captureFinishedCallback = AZStd::move(captureFinishedCallback);
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// note: "Output" (slot name) maps to MainPipeline.pass CopyToSwapChain
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bool startedCapture = false;
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AZ::Render::FrameCaptureRequestBus::BroadcastResult(
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startedCapture, &AZ::Render::FrameCaptureRequestBus::Events::CapturePassAttachmentWithCallback, m_passHierarchy,
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AZStd::string("Output"), attachmentReadbackCallback, AZ::RPI::PassAttachmentReadbackOption::Output);
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return startedCapture;
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}
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void AtomOutputFrameCapture::OnCaptureFinished(
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[[maybe_unused]] AZ::Render::FrameCaptureResult result, [[maybe_unused]] const AZStd::string& info)
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{
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m_captureFinishedCallback();
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AZ::Render::FrameCaptureNotificationBus::Handler::BusDisconnect();
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}
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AZ::Matrix3x4 TransformFromEntityId(const AZ::EntityId entityId)
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{
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AZ::Transform cameraTransform = AZ::Transform::CreateIdentity();
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AZ::TransformBus::EventResult(cameraTransform, entityId, &AZ::TransformBus::Events::GetWorldTM);
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return AZ::Matrix3x4::CreateFromTransform(cameraTransform);
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}
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AZ::Matrix4x4 ProjectionFromCameraEntityId(const AZ::EntityId entityId, const float outputWidth, const float outputHeight)
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{
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float nearDist = 0.0f;
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Camera::CameraRequestBus::EventResult(nearDist, entityId, &Camera::CameraRequestBus::Events::GetNearClipDistance);
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float farDist = 0.0f;
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Camera::CameraRequestBus::EventResult(farDist, entityId, &Camera::CameraRequestBus::Events::GetFarClipDistance);
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float fovRad = 0.0f;
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Camera::CameraRequestBus::EventResult(fovRad, entityId, &Camera::CameraRequestBus::Events::GetFovRadians);
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const float aspectRatio = outputWidth / outputHeight;
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AZ::Matrix4x4 viewToClipMatrix;
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AZ::MakePerspectiveFovMatrixRH(viewToClipMatrix, fovRad, aspectRatio, nearDist, farDist, /*reverseDepth=*/true);
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return viewToClipMatrix;
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}
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AZ::RPI::Scene* SceneFromGameEntityContext()
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{
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AzFramework::EntityContextId entityContextId;
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AzFramework::GameEntityContextRequestBus::BroadcastResult(
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entityContextId, &AzFramework::GameEntityContextRequestBus::Events::GetGameEntityContextId);
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return AZ::RPI::Scene::GetSceneForEntityContextId(entityContextId);
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}
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} // namespace TrackView
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