New Geometry Asset classes and Mesh Loader replacements

include/nbl/asset/ICPUPolygonGeometry.h

@@ -0,0 +1,176 @@
+// Copyright (C) 2025-2025 - DevSH Graphics Programming Sp. z O.O.
+// This file is part of the "Nabla Engine".
+// For conditions of distribution and use, see copyright notice in nabla.h
+#ifndef _NBL_ASSET_I_CPU_POLYGON_GEOMETRY_H_INCLUDED_
+#define _NBL_ASSET_I_CPU_POLYGON_GEOMETRY_H_INCLUDED_
+
+
+#include "nbl/asset/IPolygonGeometry.h"
+
+
+namespace nbl::asset
+{
+//
+class NBL_API2 ICPUPolygonGeometry : public IAsset, public IPolygonGeometry<ICPUBuffer>
+{
+        using base_t = IPolygonGeometry<ICPUBuffer>;
+
+    public:
+        inline ICPUPolygonGeometry() = default;
+
+        constexpr static inline auto AssetType = ET_GEOMETRY;
+        inline E_TYPE getAssetType() const override {return AssetType;}
+
+        inline core::smart_refctd_ptr<IAsset> clone(uint32_t _depth=~0u) const
+        {
+            const auto nextDepth = _depth ? (_depth-1):0;
+            auto retval = core::smart_refctd_ptr<ICPUPolygonGeometry>();
+            retval->m_positionView = m_positionView.clone(nextDepth);
+            retval->m_jointOBBView = m_jointOBBView.clone(nextDepth);
+            retval->m_indexView = m_indexView.clone(nextDepth);
+            retval->m_jointWeightViews.reserve(m_jointWeightViews.size());
+            for (const auto& pair : m_jointWeightViews)
+                retval->m_jointWeightViews.push_back({
+                    .indices = pair.indices.clone(nextDepth),
+                    .weights = pair.weights.clone(nextDepth)
+                });
+            retval->m_auxAttributeViews.reserve(m_auxAttributeViews.size());
+            for (const auto& view : m_auxAttributeViews)
+                retval->m_auxAttributeViews.push_back(view.clone(nextDepth));
+            retval->m_normalView = m_normalView.clone(nextDepth);
+            retval->m_jointCount = m_jointCount;
+            retval->m_verticesForFirst = m_verticesForFirst;
+            retval->m_verticesPerSupplementary = m_verticesPerSupplementary;
+            return retval;
+        }
+
+        // TODO: remove after https://github.com/Devsh-Graphics-Programming/Nabla/pull/871 merge
+        inline size_t getDependantCount() const override
+        {
+           size_t count = 0;
+           visitDependents([&current](const IAsset* dep)->bool
+               {
+                   count++;
+                   return true;
+               }
+           );
+           return count;
+        }
+
+        // needs to be hidden because of mutability checking
+        inline bool setPositionView(SDataView&& view)
+        {
+            if (isMutable() && view.composed.isFormatted())
+                return base_t::setPositionView(std::move(view));
+            return false;
+        }
+
+        // 
+        inline bool setJointOBBView(SDataView&& view)
+        {
+            if (isMutable())
+                return base_t::setJointOBBView(std::move(view));
+            return false;
+        }
+
+        // Needs to be hidden because ICPU base class shall check mutability
+        inline bool setIndexView(SDataView&& view)
+        {
+            if (isMutable())
+                return base_t::setIndexView(std::move(view));
+            return false;
+        }
+
+        //
+        inline bool setVerticesForFirst(const uint16_t count)
+        {
+            if (isMutable())
+            {
+                m_verticesForFirst = count;
+                return true;
+            }
+            return false;
+        }
+
+        //
+        inline bool setVerticesPerSupplementary(const uint16_t count)
+        {
+            if (isMutable())
+            {
+                m_verticesPerSupplementary = count;
+                return true;
+            }
+            return false;
+        }
+
+        //
+        inline void setNormalView(SDataView&& view)
+        {
+            if (isMutable())
+            {
+                m_normalView = std::move(view);
+                return true;
+            }
+            return false;
+        }
+
+        //
+        inline bool setJointCount(const uint32_t count)
+        {
+            if (isMutable())
+            {
+                m_jointCount = count;
+                return true;
+            }
+            return false;
+        }
+
+        //
+        inline const core::vector<SJointWeight>* getJointWeightViews()
+        {
+            if (isMutable())
+                return m_jointWeightViews;
+            return nullptr;
+        }
+
+        //
+        inline const core::vector<SJointWeight>* getAuxAttributeViews()
+        {
+            if (isMutable())
+                return m_auxAttributeViews;
+            return nullptr;
+        }
+
+    protected:
+        //
+        inline void visitDependents(std::function<bool(const IAsset*)>& visit) const //override
+        {
+            if (!visit(m_positionView.src.buffer.get())) return;
+            if (!visit(m_jointOBBView.src.buffer.get())) return;
+            if (!visit(m_indexView.src.buffer.get())) return;
+            for (const auto& pair : m_jointWeightViews)
+            {
+                if (!visit(pair.indices.src.buffer.get())) return;
+                if (!visit(pair.weights.src.buffer.get())) return;
+            }
+            for (const auto& view : m_auxAttributeViews)
+                if (!visit(view.src.buffer.get())) return;
+            if (!visit(m_normalView.src.buffer.get())) return;
+        }
+        // TODO: remove after https://github.com/Devsh-Graphics-Programming/Nabla/pull/871 merge
+        inline IAsset* getDependant_impl(const size_t ix) override
+        {
+           const IAsset* retval = nullptr;
+           size_t current = 0;
+           visitDependents([&current](const IAsset* dep)->bool
+               {
+                   retval = dep;
+                   return ix<current++;
+               }
+           );
+           return const_cast<IAsset*>(retval);
+        }
+};
+
+}
+#endif