Handle visiblity

DiligentGraphics · Nov 3, 2023 · b29af45 · b29af45
1 parent 6861023
commit b29af45
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Showing 3 changed files with 9 additions and 0 deletions.
diff --git a/Hydrogent/interface/HnMesh.hpp b/Hydrogent/interface/HnMesh.hpp
@@ -83,6 +83,7 @@ class HnMesh final : public pxr::HdMesh
     Uint32 GetNumEdges() const { return m_NumEdges; }
     Uint32 GetNumPoints() const { return m_Topology.GetNumPoints(); }
 
+    const bool      IsVisible() const { return m_IsVisible; }
     const float4x4& GetTransform() const { return m_Transform; }
 
     const pxr::SdfPath& GetMaterialId() const { return m_MaterialId; }
@@ -146,6 +147,7 @@ class HnMesh final : public pxr::HdMesh
 
     std::unordered_map<pxr::TfToken, std::shared_ptr<pxr::HdBufferSource>, pxr::TfToken::HashFunctor> m_BufferSources;
 
+    bool   m_IsVisible    = true;
     Uint32 m_NumTriangles = 0;
     Uint32 m_NumEdges     = 0;
 

diff --git a/Hydrogent/src/HnMesh.cpp b/Hydrogent/src/HnMesh.cpp
@@ -228,6 +228,10 @@ void HnMesh::UpdateRepr(pxr::HdSceneDelegate& SceneDelegate,
         pxr::GfMatrix4d Transform = SceneDelegate.GetTransform(Id);
         m_Transform               = float4x4::MakeMatrix(Transform.data());
     }
+    if (pxr::HdChangeTracker::IsVisibilityDirty(DirtyBits, Id))
+    {
+        m_IsVisible = SceneDelegate.GetVisible(Id);
+    }
 
     DirtyBits &= ~pxr::HdChangeTracker::NewRepr;
 }

diff --git a/Hydrogent/src/HnRenderPass.cpp b/Hydrogent/src/HnRenderPass.cpp
@@ -212,6 +212,9 @@ void HnRenderPass::RenderMesh(RenderState&      State,
     if (pPosVB == nullptr || pSRB == nullptr)
         return;
 
+    if (!Mesh.IsVisible())
+        return;
+
     // Our shader currently supports two texture coordinate sets.
     // Gather vertex buffers for both sets.
     const auto& TexCoordSets    = Material.GetTextureCoordinateSets();