559 lines
18 KiB
C++
559 lines
18 KiB
C++
// Copyright (C) 2021 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Graphics module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Graphics/ForwardFramePipeline.hpp>
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#include <Nazara/Graphics/AbstractViewer.hpp>
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#include <Nazara/Graphics/FrameGraph.hpp>
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#include <Nazara/Graphics/Graphics.hpp>
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#include <Nazara/Graphics/InstancedRenderable.hpp>
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#include <Nazara/Graphics/Material.hpp>
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#include <Nazara/Graphics/RenderElement.hpp>
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#include <Nazara/Graphics/SpriteChainRenderer.hpp>
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#include <Nazara/Graphics/SubmeshRenderer.hpp>
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#include <Nazara/Graphics/ViewerInstance.hpp>
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#include <Nazara/Graphics/WorldInstance.hpp>
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#include <Nazara/Math/Frustum.hpp>
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#include <Nazara/Renderer/CommandBufferBuilder.hpp>
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#include <Nazara/Renderer/Framebuffer.hpp>
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#include <Nazara/Renderer/RenderFrame.hpp>
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#include <Nazara/Renderer/RenderTarget.hpp>
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#include <Nazara/Renderer/UploadPool.hpp>
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#include <array>
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#include <Nazara/Graphics/Debug.hpp>
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namespace Nz
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{
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ForwardFramePipeline::ForwardFramePipeline() :
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m_rebuildFrameGraph(true)
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{
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auto& passRegistry = Graphics::Instance()->GetMaterialPassRegistry();
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m_depthPassIndex = passRegistry.GetPassIndex("DepthPass");
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m_forwardPassIndex = passRegistry.GetPassIndex("ForwardPass");
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m_elementRenderers.resize(BasicRenderElementCount);
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m_elementRenderers[UnderlyingCast(BasicRenderElement::SpriteChain)] = std::make_unique<SpriteChainRenderer>(*Graphics::Instance()->GetRenderDevice());
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m_elementRenderers[UnderlyingCast(BasicRenderElement::Submesh)] = std::make_unique<SubmeshRenderer>();
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}
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void ForwardFramePipeline::InvalidateViewer(AbstractViewer* viewerInstance)
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{
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m_invalidatedViewerInstances.insert(viewerInstance);
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}
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void ForwardFramePipeline::InvalidateWorldInstance(WorldInstance* worldInstance)
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{
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m_invalidatedWorldInstances.insert(worldInstance);
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}
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void ForwardFramePipeline::RegisterInstancedDrawable(WorldInstancePtr worldInstance, const InstancedRenderable* instancedRenderable)
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{
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m_removedWorldInstances.erase(worldInstance);
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auto& renderableMap = m_renderables[worldInstance];
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if (renderableMap.empty())
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InvalidateWorldInstance(worldInstance.get());
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if (auto it = renderableMap.find(instancedRenderable); it == renderableMap.end())
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{
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auto& renderableData = renderableMap.emplace(instancedRenderable, RenderableData{}).first->second;
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renderableData.onMaterialInvalidated.Connect(instancedRenderable->OnMaterialInvalidated, [this](InstancedRenderable* instancedRenderable, std::size_t materialIndex, const std::shared_ptr<Material>& newMaterial)
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{
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if (newMaterial)
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{
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if (const auto& pass = newMaterial->GetPass(m_depthPassIndex))
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RegisterMaterialPass(pass.get());
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if (const auto& pass = newMaterial->GetPass(m_forwardPassIndex))
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RegisterMaterialPass(pass.get());
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}
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const auto& prevMaterial = instancedRenderable->GetMaterial(materialIndex);
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if (prevMaterial)
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{
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if (const auto& pass = prevMaterial->GetPass(m_depthPassIndex))
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UnregisterMaterialPass(pass.get());
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if (const auto& pass = prevMaterial->GetPass(m_forwardPassIndex))
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UnregisterMaterialPass(pass.get());
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}
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for (auto&& [viewer, viewerData] : m_viewers)
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{
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viewerData.rebuildDepthPrepass = true;
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viewerData.rebuildForwardPass = true;
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}
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});
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std::size_t matCount = instancedRenderable->GetMaterialCount();
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for (std::size_t i = 0; i < matCount; ++i)
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{
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if (Material* mat = instancedRenderable->GetMaterial(i).get())
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{
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if (const auto& pass = mat->GetPass(m_depthPassIndex))
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RegisterMaterialPass(pass.get());
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if (const auto& pass = mat->GetPass(m_forwardPassIndex))
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RegisterMaterialPass(pass.get());
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}
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}
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for (auto&& [viewer, viewerData] : m_viewers)
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{
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viewerData.rebuildDepthPrepass = true;
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viewerData.rebuildForwardPass = true;
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}
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}
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}
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void ForwardFramePipeline::RegisterViewer(AbstractViewer* viewerInstance)
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{
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m_viewers.emplace(viewerInstance, ViewerData{});
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m_invalidatedViewerInstances.insert(viewerInstance);
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m_rebuildFrameGraph = true;
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}
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void ForwardFramePipeline::Render(RenderFrame& renderFrame)
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{
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m_currentRenderFrame = &renderFrame;
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Graphics* graphics = Graphics::Instance();
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renderFrame.PushForRelease(std::move(m_removedWorldInstances));
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m_removedWorldInstances.clear();
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if (m_rebuildFrameGraph)
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{
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renderFrame.PushForRelease(std::move(m_bakedFrameGraph));
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m_bakedFrameGraph = BuildFrameGraph();
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}
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// Update UBOs and materials
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UploadPool& uploadPool = renderFrame.GetUploadPool();
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bool prepare = false;
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renderFrame.Execute([&](CommandBufferBuilder& builder)
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{
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builder.BeginDebugRegion("UBO Update", Color::Yellow);
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{
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builder.PreTransferBarrier();
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for (AbstractViewer* viewer : m_invalidatedViewerInstances)
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viewer->GetViewerInstance().UpdateBuffers(uploadPool, builder);
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m_invalidatedViewerInstances.clear();
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for (WorldInstance* worldInstance : m_invalidatedWorldInstances)
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worldInstance->UpdateBuffers(uploadPool, builder);
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m_invalidatedWorldInstances.clear();
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for (MaterialPass* material : m_invalidatedMaterials)
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{
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if (material->Update(renderFrame, builder))
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{
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for (auto&& [viewer, viewerData] : m_viewers)
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{
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viewerData.rebuildDepthPrepass = true;
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viewerData.rebuildForwardPass = true;
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viewerData.prepare = true;
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}
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}
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}
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m_invalidatedMaterials.clear();
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builder.PostTransferBarrier();
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}
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builder.EndDebugRegion();
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}, QueueType::Transfer);
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auto CombineHash = [](std::size_t currentHash, std::size_t newHash)
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{
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return currentHash * 23 + newHash;
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};
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// Render queues handling
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for (auto&& [viewer, data] : m_viewers)
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{
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auto& viewerData = data;
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// Frustum culling
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const Matrix4f& viewProjMatrix = viewer->GetViewerInstance().GetViewProjMatrix();
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Frustumf frustum = Frustumf::Extract(viewProjMatrix);
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std::size_t visibilityHash = 5U;
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m_visibleRenderables.clear();
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for (const auto& [worldInstance, renderables] : m_renderables)
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{
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bool isInstanceVisible = false;
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for (const auto& [renderable, renderableData] : renderables)
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{
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// Get global AABB
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BoundingVolumef boundingVolume(renderable->GetAABB());
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boundingVolume.Update(worldInstance->GetWorldMatrix());
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if (!frustum.Contains(boundingVolume.aabb))
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continue;
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auto& visibleRenderable = m_visibleRenderables.emplace_back();
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visibleRenderable.instancedRenderable = renderable;
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visibleRenderable.worldInstance = worldInstance.get();
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isInstanceVisible = true;
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visibilityHash = CombineHash(visibilityHash, std::hash<const void*>()(renderable));
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}
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if (isInstanceVisible)
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visibilityHash = CombineHash(visibilityHash, std::hash<const void*>()(worldInstance.get()));
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}
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if (viewerData.visibilityHash != visibilityHash)
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{
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viewerData.rebuildDepthPrepass = true;
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viewerData.rebuildForwardPass = true;
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viewerData.prepare = true;
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viewerData.visibilityHash = visibilityHash;
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}
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if (viewerData.rebuildDepthPrepass)
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{
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viewerData.depthPrepassRenderElements.clear();
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for (const auto& renderableData : m_visibleRenderables)
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renderableData.instancedRenderable->BuildElement(m_depthPassIndex, *renderableData.worldInstance, viewerData.depthPrepassRenderElements);
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viewerData.depthPrepassRegistry.Clear();
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viewerData.depthPrepassRenderQueue.Clear();
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for (const auto& renderElement : viewerData.depthPrepassRenderElements)
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{
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renderElement->Register(viewerData.depthPrepassRegistry);
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viewerData.depthPrepassRenderQueue.Insert(renderElement.get());
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}
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}
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viewerData.depthPrepassRenderQueue.Sort([&](const RenderElement* element)
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{
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return element->ComputeSortingScore(frustum, viewerData.depthPrepassRegistry);
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});
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if (viewerData.rebuildForwardPass)
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{
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viewerData.forwardRenderElements.clear();
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for (const auto& renderableData : m_visibleRenderables)
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renderableData.instancedRenderable->BuildElement(m_forwardPassIndex, *renderableData.worldInstance, viewerData.forwardRenderElements);
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viewerData.forwardRegistry.Clear();
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viewerData.forwardRenderQueue.Clear();
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for (const auto& renderElement : viewerData.forwardRenderElements)
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{
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renderElement->Register(viewerData.forwardRegistry);
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viewerData.forwardRenderQueue.Insert(renderElement.get());
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}
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}
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viewerData.forwardRenderQueue.Sort([&](const RenderElement* element)
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{
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return element->ComputeSortingScore(frustum, viewerData.forwardRegistry);
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});
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}
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for (auto&& [viewer, viewerData] : m_viewers)
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{
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if (!viewerData.prepare)
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continue;
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for (std::size_t i = 0; i < m_elementRenderers.size(); ++i)
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{
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auto& elementRendererPtr = m_elementRenderers[i];
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if (i >= viewerData.elementRendererData.size() || !viewerData.elementRendererData[i])
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{
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if (i >= viewerData.elementRendererData.size())
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viewerData.elementRendererData.resize(i + 1);
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viewerData.elementRendererData[i] = elementRendererPtr->InstanciateData();
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}
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if (elementRendererPtr)
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elementRendererPtr->Reset(*viewerData.elementRendererData[i], renderFrame);
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}
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auto& rendererData = viewerData.elementRendererData;
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const auto& viewerInstance = viewer->GetViewerInstance();
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ProcessRenderQueue(viewerData.depthPrepassRenderQueue, [&](std::size_t elementType, const Pointer<const RenderElement>* elements, std::size_t elementCount)
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{
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ElementRenderer& elementRenderer = *m_elementRenderers[elementType];
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elementRenderer.Prepare(viewerInstance, *rendererData[elementType], renderFrame, elements, elementCount);
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});
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ProcessRenderQueue(viewerData.forwardRenderQueue, [&](std::size_t elementType, const Pointer<const RenderElement>* elements, std::size_t elementCount)
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{
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ElementRenderer& elementRenderer = *m_elementRenderers[elementType];
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elementRenderer.Prepare(viewerInstance, *rendererData[elementType], renderFrame, elements, elementCount);
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});
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}
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if (m_bakedFrameGraph.Resize(renderFrame))
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{
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const std::shared_ptr<TextureSampler>& sampler = graphics->GetSamplerCache().Get({});
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for (auto&& [_, viewerData] : m_viewers)
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{
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if (viewerData.blitShaderBinding)
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renderFrame.PushForRelease(std::move(viewerData.blitShaderBinding));
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viewerData.blitShaderBinding = graphics->GetBlitPipelineLayout()->AllocateShaderBinding(0);
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viewerData.blitShaderBinding->Update({
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{
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0,
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ShaderBinding::TextureBinding {
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m_bakedFrameGraph.GetAttachmentTexture(viewerData.colorAttachment).get(),
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sampler.get()
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}
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}
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});
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}
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}
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m_bakedFrameGraph.Execute(renderFrame);
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m_rebuildFrameGraph = false;
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const Vector2ui& frameSize = renderFrame.GetSize();
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for (auto&& [viewer, viewerData] : m_viewers)
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{
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viewerData.rebuildForwardPass = false;
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viewerData.rebuildDepthPrepass = false;
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viewerData.prepare = false;
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const RenderTarget& renderTarget = viewer->GetRenderTarget();
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Recti renderRegion(0, 0, frameSize.x, frameSize.y);
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const ShaderBindingPtr& blitShaderBinding = viewerData.blitShaderBinding;
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const std::shared_ptr<Texture>& sourceTexture = m_bakedFrameGraph.GetAttachmentTexture(viewerData.colorAttachment);
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renderFrame.Execute([&](CommandBufferBuilder& builder)
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{
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builder.TextureBarrier(PipelineStage::ColorOutput, PipelineStage::FragmentShader, MemoryAccess::ColorWrite, MemoryAccess::ShaderRead, TextureLayout::ColorOutput, TextureLayout::ColorInput, *sourceTexture);
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std::array<CommandBufferBuilder::ClearValues, 2> clearValues;
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clearValues[0].color = Color::Black;
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clearValues[1].depth = 1.f;
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clearValues[1].stencil = 0;
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builder.BeginRenderPass(renderTarget.GetFramebuffer(renderFrame.GetFramebufferIndex()), renderTarget.GetRenderPass(), renderRegion, { clearValues[0], clearValues[1] });
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{
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builder.BeginDebugRegion("Main window rendering", Color::Green);
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{
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builder.SetScissor(renderRegion);
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builder.SetViewport(renderRegion);
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builder.BindPipeline(*graphics->GetBlitPipeline());
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builder.BindVertexBuffer(0, *graphics->GetFullscreenVertexBuffer());
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builder.BindShaderBinding(0, *blitShaderBinding);
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builder.Draw(3);
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}
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builder.EndDebugRegion();
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}
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builder.EndRenderPass();
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}, QueueType::Graphics);
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}
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}
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void ForwardFramePipeline::UnregisterInstancedDrawable(const WorldInstancePtr& worldInstance, const InstancedRenderable* instancedRenderable)
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{
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auto instanceIt = m_renderables.find(worldInstance);
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if (instanceIt == m_renderables.end())
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return;
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auto& instancedRenderables = instanceIt->second;
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auto renderableIt = instancedRenderables.find(instancedRenderable);
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if (renderableIt == instancedRenderables.end())
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return;
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if (instancedRenderables.size() > 1)
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instancedRenderables.erase(renderableIt);
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else
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{
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m_removedWorldInstances.insert(worldInstance);
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m_renderables.erase(instanceIt);
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}
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std::size_t matCount = instancedRenderable->GetMaterialCount();
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for (std::size_t i = 0; i < matCount; ++i)
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{
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if (const auto& pass = instancedRenderable->GetMaterial(i)->GetPass(m_depthPassIndex))
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UnregisterMaterialPass(pass.get());
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if (const auto& pass = instancedRenderable->GetMaterial(i)->GetPass(m_forwardPassIndex))
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UnregisterMaterialPass(pass.get());
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}
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for (auto&& [viewer, viewerData] : m_viewers)
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{
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viewerData.rebuildDepthPrepass = true;
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viewerData.rebuildForwardPass = true;
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}
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}
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void ForwardFramePipeline::UnregisterViewer(AbstractViewer* viewerInstance)
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{
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m_viewers.erase(viewerInstance);
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m_rebuildFrameGraph = true;
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}
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BakedFrameGraph ForwardFramePipeline::BuildFrameGraph()
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{
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FrameGraph frameGraph;
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for (auto&& [viewer, viewerData] : m_viewers)
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{
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viewerData.colorAttachment = frameGraph.AddAttachment({
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"Color",
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PixelFormat::RGBA8
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});
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viewerData.depthStencilAttachment = frameGraph.AddAttachment({
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"Depth-stencil buffer",
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Graphics::Instance()->GetPreferredDepthStencilFormat()
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});
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}
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for (auto&& [viewer, data] : m_viewers)
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{
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auto& viewerData = data;
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FramePass& depthPrepass = frameGraph.AddPass("Depth pre-pass");
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depthPrepass.SetDepthStencilOutput(viewerData.depthStencilAttachment);
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depthPrepass.SetDepthStencilClear(1.f, 0);
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depthPrepass.SetExecutionCallback([&]()
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{
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if (viewerData.rebuildDepthPrepass)
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return FramePassExecution::UpdateAndExecute;
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else
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return FramePassExecution::Execute;
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});
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depthPrepass.SetCommandCallback([this, viewer = viewer, &viewerData](CommandBufferBuilder& builder, const Recti& /*renderRect*/)
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{
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Recti viewport = viewer->GetViewport();
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builder.SetScissor(viewport);
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builder.SetViewport(viewport);
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const auto& viewerInstance = viewer->GetViewerInstance();
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ProcessRenderQueue(viewerData.depthPrepassRenderQueue, [&](std::size_t elementType, const Pointer<const RenderElement>* elements, std::size_t elementCount)
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{
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ElementRenderer& elementRenderer = *m_elementRenderers[elementType];
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elementRenderer.Render(viewerInstance, *viewerData.elementRendererData[elementType], builder, elements, elementCount);
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});
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});
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FramePass& forwardPass = frameGraph.AddPass("Forward pass");
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forwardPass.AddOutput(viewerData.colorAttachment);
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forwardPass.SetDepthStencilInput(viewerData.depthStencilAttachment);
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//forwardPass.SetDepthStencilOutput(viewerData.depthStencilAttachment);
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forwardPass.SetClearColor(0, Color::Black);
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forwardPass.SetDepthStencilClear(1.f, 0);
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forwardPass.SetExecutionCallback([&]()
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{
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if (viewerData.rebuildForwardPass)
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return FramePassExecution::UpdateAndExecute;
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else
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return FramePassExecution::Execute;
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});
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forwardPass.SetCommandCallback([this, viewer = viewer, &viewerData](CommandBufferBuilder& builder, const Recti& /*renderRect*/)
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{
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Recti viewport = viewer->GetViewport();
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builder.SetScissor(viewport);
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builder.SetViewport(viewport);
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const auto& viewerInstance = viewer->GetViewerInstance();
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ProcessRenderQueue(viewerData.forwardRenderQueue, [&](std::size_t elementType, const Pointer<const RenderElement>* elements, std::size_t elementCount)
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{
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ElementRenderer& elementRenderer = *m_elementRenderers[elementType];
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elementRenderer.Render(viewerInstance , *viewerData.elementRendererData[elementType], builder, elements, elementCount);
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});
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});
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}
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//FIXME: This doesn't handle multiple window viewers
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for (auto&& [viewer, viewerData] : m_viewers)
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frameGraph.SetBackbufferOutput(viewerData.colorAttachment);
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return frameGraph.Bake();
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}
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void ForwardFramePipeline::RegisterMaterialPass(MaterialPass* material)
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{
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auto it = m_materials.find(material);
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if (it == m_materials.end())
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{
|
|
it = m_materials.emplace(material, MaterialData{}).first;
|
|
it->second.onMaterialInvalided.Connect(material->OnMaterialInvalidated, [this, material](const MaterialPass* /*material*/)
|
|
{
|
|
m_invalidatedMaterials.insert(material);
|
|
});
|
|
|
|
m_invalidatedMaterials.insert(material);
|
|
}
|
|
|
|
it->second.usedCount++;
|
|
}
|
|
|
|
template<typename F>
|
|
void ForwardFramePipeline::ProcessRenderQueue(const RenderQueue<RenderElement*>& renderQueue, F&& callback)
|
|
{
|
|
if (renderQueue.empty())
|
|
return;
|
|
|
|
auto it = renderQueue.begin();
|
|
auto itEnd = renderQueue.end();
|
|
while (it != itEnd)
|
|
{
|
|
const RenderElement* element = *it;
|
|
UInt8 elementType = element->GetElementType();
|
|
|
|
const Pointer<RenderElement>* first = it;
|
|
|
|
++it;
|
|
while (it != itEnd && (*it)->GetElementType() == elementType)
|
|
++it;
|
|
|
|
std::size_t count = it - first;
|
|
|
|
if (elementType >= m_elementRenderers.size() || !m_elementRenderers[elementType])
|
|
continue;
|
|
|
|
callback(elementType, first, count);
|
|
}
|
|
}
|
|
|
|
void ForwardFramePipeline::UnregisterMaterialPass(MaterialPass* material)
|
|
{
|
|
auto it = m_materials.find(material);
|
|
assert(it != m_materials.end());
|
|
|
|
MaterialData& materialData = it->second;
|
|
assert(materialData.usedCount > 0);
|
|
if (--materialData.usedCount == 0)
|
|
m_materials.erase(material);
|
|
}
|
|
}
|