128 lines
4.4 KiB
C++
128 lines
4.4 KiB
C++
// Copyright (C) 2023 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/SpotLightShadowData.hpp>
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#include <Nazara/Graphics/BakedFrameGraph.hpp>
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#include <Nazara/Graphics/FrameGraph.hpp>
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#include <Nazara/Graphics/FramePipeline.hpp>
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#include <Nazara/Graphics/Graphics.hpp>
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#include <Nazara/Graphics/SpotLight.hpp>
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#include <cassert>
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#include <Nazara/Graphics/Debug.hpp>
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namespace Nz
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{
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SpotLightShadowData::SpotLightShadowData(FramePipeline& pipeline, ElementRendererRegistry& elementRegistry, const SpotLight& light) :
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m_pipeline(pipeline),
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m_light(light)
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{
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UInt32 shadowMapSize = light.GetShadowMapSize();
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m_viewer.UpdateRenderMask(0xFFFFFFFF);
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m_viewer.UpdateViewport(Recti(0, 0, SafeCast<int>(shadowMapSize), SafeCast<int>(shadowMapSize)));
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constexpr float zNear = 0.01f;
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ViewerInstance& viewerInstance = m_viewer.GetViewerInstance();
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viewerInstance.UpdateProjectionMatrix(Matrix4f::Perspective(m_light.GetOuterAngle() * 2.f, 1.f, zNear, m_light.GetRadius()));
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viewerInstance.UpdateNearFarPlanes(zNear, m_light.GetRadius());
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m_onLightShadowMapSettingChange.Connect(m_light.OnLightShadowMapSettingChange, [this](Light* /*light*/, PixelFormat /*newPixelFormat*/, UInt32 newSize)
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{
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m_viewer.UpdateViewport(Recti(0, 0, SafeCast<int>(newSize), SafeCast<int>(newSize)));
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});
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m_onLightTransformInvalidated.Connect(m_light.OnLightTransformInvalided, [this]([[maybe_unused]] Light* light)
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{
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assert(&m_light == light);
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ViewerInstance& viewerInstance = m_viewer.GetViewerInstance();
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viewerInstance.UpdateEyePosition(m_light.GetPosition());
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viewerInstance.UpdateViewMatrix(Nz::Matrix4f::TransformInverse(m_light.GetPosition(), m_light.GetRotation()));
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m_pipeline.QueueTransfer(&viewerInstance);
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});
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viewerInstance.UpdateEyePosition(m_light.GetPosition());
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viewerInstance.UpdateViewMatrix(Nz::Matrix4f::TransformInverse(m_light.GetPosition(), m_light.GetRotation()));
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m_pipeline.QueueTransfer(&viewerInstance);
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std::size_t shadowPassIndex = Graphics::Instance()->GetMaterialPassRegistry().GetPassIndex("ShadowPass");
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FramePipelinePass::PassData passData = {
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&m_viewer,
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elementRegistry,
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m_pipeline
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};
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m_depthPass.emplace(passData, "Spotlight shadow mapping", shadowPassIndex);
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m_pipeline.ForEachRegisteredMaterialInstance([this](const MaterialInstance& matInstance)
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{
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m_depthPass->RegisterMaterialInstance(matInstance);
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});
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}
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void SpotLightShadowData::PrepareRendering(RenderFrame& renderFrame, [[maybe_unused]] const AbstractViewer* viewer)
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{
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assert(viewer == nullptr);
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const Matrix4f& viewProjMatrix = m_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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const auto& visibleRenderables = m_pipeline.FrustumCull(frustum, 0xFFFFFFFF, visibilityHash);
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FramePipelinePass::FrameData passData = {
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nullptr,
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frustum,
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renderFrame,
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visibleRenderables,
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visibilityHash
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};
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m_depthPass->Prepare(passData);
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}
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void SpotLightShadowData::RegisterMaterialInstance(const MaterialInstance& matInstance)
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{
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m_depthPass->RegisterMaterialInstance(matInstance);
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}
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void SpotLightShadowData::RegisterPassInputs(FramePass& pass, [[maybe_unused]] const AbstractViewer* viewer)
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{
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assert(viewer == nullptr);
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pass.AddInput(m_attachmentIndex);
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}
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void SpotLightShadowData::RegisterToFrameGraph(FrameGraph& frameGraph, [[maybe_unused]] const AbstractViewer* viewer)
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{
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assert(viewer == nullptr);
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UInt32 shadowMapSize = m_light.GetShadowMapSize();
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m_attachmentIndex = frameGraph.AddAttachment({
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.name = "Shadowmap",
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.format = m_light.GetShadowMapFormat(),
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.size = FramePassAttachmentSize::Fixed,
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.width = shadowMapSize,
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.height = shadowMapSize,
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});
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FramePipelinePass::PassInputOuputs passInputOuputs;
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passInputOuputs.depthStencilOutput = m_attachmentIndex;
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m_depthPass->RegisterToFrameGraph(frameGraph, passInputOuputs);
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}
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const Texture* SpotLightShadowData::RetrieveLightShadowmap(const BakedFrameGraph& bakedGraph, const AbstractViewer* /*viewer*/) const
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{
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return bakedGraph.GetAttachmentTexture(m_attachmentIndex).get();
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}
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void SpotLightShadowData::UnregisterMaterialInstance(const MaterialInstance& matInstance)
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{
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m_depthPass->UnregisterMaterialInstance(matInstance);
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}
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}
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