Graphics: Add GraphicalMesh and Model classes

src/Nazara/Graphics/GraphicalMesh.cpp

@@ -0,0 +1,56 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Graphics module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Graphics/GraphicalMesh.hpp>
+#include <Nazara/Graphics/Graphics.hpp>
+#include <Nazara/Utility/SoftwareBuffer.hpp>
+#include <Nazara/Utility/StaticMesh.hpp>
+#include <cassert>
+#include <Nazara/Graphics/Debug.hpp>
+
+namespace Nz
+{
+	GraphicalMesh::GraphicalMesh(const Mesh* mesh)
+	{
+		assert(mesh->GetAnimationType() == AnimationType_Static);
+
+		RenderDevice& renderDevice = Graphics::Instance()->GetRenderDevice();
+
+		m_subMeshes.reserve(mesh->GetSubMeshCount());
+		for (std::size_t i = 0; i < mesh->GetSubMeshCount(); ++i)
+		{
+			const SubMesh* subMesh = mesh->GetSubMesh(i);
+
+			const StaticMesh* staticMesh = static_cast<const StaticMesh*>(subMesh);
+
+			const IndexBuffer* indexBuffer = staticMesh->GetIndexBuffer();
+			const VertexBuffer* vertexBuffer = staticMesh->GetVertexBuffer();
+
+			assert(indexBuffer->GetBuffer()->GetStorage() == DataStorage_Software);
+			const SoftwareBuffer* indexBufferContent = static_cast<const SoftwareBuffer*>(indexBuffer->GetBuffer()->GetImpl());
+
+			assert(vertexBuffer->GetBuffer()->GetStorage() == DataStorage_Software);
+			const SoftwareBuffer* vertexBufferContent = static_cast<const SoftwareBuffer*>(vertexBuffer->GetBuffer()->GetImpl());
+
+			auto& submeshData = m_subMeshes.emplace_back();
+			submeshData.indexBuffer = renderDevice.InstantiateBuffer(BufferType_Index);
+			if (!submeshData.indexBuffer->Initialize(indexBuffer->GetStride() * indexBuffer->GetIndexCount(), BufferUsage_DeviceLocal))
+				throw std::runtime_error("failed to create index buffer");
+
+			if (!submeshData.indexBuffer->Fill(indexBufferContent->GetData() + indexBuffer->GetStartOffset(), 0, indexBuffer->GetEndOffset() - indexBuffer->GetStartOffset()))
+				throw std::runtime_error("failed to fill index buffer");
+
+			submeshData.indexCount = indexBuffer->GetIndexCount();
+
+			submeshData.vertexBuffer = renderDevice.InstantiateBuffer(BufferType_Vertex);
+			if (!submeshData.vertexBuffer->Initialize(vertexBuffer->GetStride() * vertexBuffer->GetVertexCount(), BufferUsage_DeviceLocal))
+				throw std::runtime_error("failed to create vertex buffer");
+
+			if (!submeshData.vertexBuffer->Fill(vertexBufferContent->GetData() + vertexBuffer->GetStartOffset(), 0, vertexBuffer->GetEndOffset() - vertexBuffer->GetStartOffset()))
+				throw std::runtime_error("failed to fill vertex buffer");
+
+			submeshData.vertexDeclaration = vertexBuffer->GetVertexDeclaration();
+		}
+	}
+}