62 lines
2.7 KiB
C++
62 lines
2.7 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/GraphicalMesh.hpp>
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#include <Nazara/Graphics/Graphics.hpp>
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#include <Nazara/Utility/SoftwareBuffer.hpp>
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#include <Nazara/Utility/StaticMesh.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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std::shared_ptr<GraphicalMesh> GraphicalMesh::BuildFromMesh(const Mesh& mesh)
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{
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const std::shared_ptr<RenderDevice>& renderDevice = Graphics::Instance()->GetRenderDevice();
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std::shared_ptr<GraphicalMesh> gfxMesh = std::make_shared<GraphicalMesh>();
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for (std::size_t i = 0; i < mesh.GetSubMeshCount(); ++i)
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{
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const Nz::SubMesh& subMesh = *mesh.GetSubMesh(i);
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const StaticMesh& staticMesh = static_cast<const StaticMesh&>(subMesh);
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const std::shared_ptr<VertexBuffer>& vertexBuffer = staticMesh.GetVertexBuffer();
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assert(vertexBuffer->GetBuffer()->GetStorage() == DataStorage::Software);
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const SoftwareBuffer* vertexBufferContent = static_cast<const SoftwareBuffer*>(vertexBuffer->GetBuffer().get());
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GraphicalMesh::SubMesh submeshData;
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const std::shared_ptr<const IndexBuffer>& indexBuffer = staticMesh.GetIndexBuffer();
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if (indexBuffer)
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{
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assert(indexBuffer->GetBuffer()->GetStorage() == DataStorage::Software);
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const SoftwareBuffer* indexBufferContent = static_cast<const SoftwareBuffer*>(indexBuffer->GetBuffer().get());
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submeshData.indexBuffer = renderDevice->InstantiateBuffer(BufferType::Index, indexBuffer->GetStride() * indexBuffer->GetIndexCount(), BufferUsage::DeviceLocal | BufferUsage::Write);
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if (!submeshData.indexBuffer->Fill(indexBufferContent->GetData() + indexBuffer->GetStartOffset(), 0, indexBuffer->GetEndOffset() - indexBuffer->GetStartOffset()))
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throw std::runtime_error("failed to fill index buffer");
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submeshData.indexCount = indexBuffer->GetIndexCount();
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submeshData.indexType = indexBuffer->GetIndexType();
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}
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else
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submeshData.indexCount = vertexBuffer->GetVertexCount();
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submeshData.vertexBuffer = renderDevice->InstantiateBuffer(BufferType::Vertex, vertexBuffer->GetStride() * vertexBuffer->GetVertexCount(), BufferUsage::DeviceLocal | BufferUsage::Write);
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if (!submeshData.vertexBuffer->Fill(vertexBufferContent->GetData() + vertexBuffer->GetStartOffset(), 0, vertexBuffer->GetEndOffset() - vertexBuffer->GetStartOffset()))
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throw std::runtime_error("failed to fill vertex buffer");
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submeshData.vertexDeclaration = vertexBuffer->GetVertexDeclaration();
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gfxMesh->AddSubMesh(std::move(submeshData));
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}
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gfxMesh->UpdateAABB(mesh.GetAABB());
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return gfxMesh;
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}
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}
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