108 lines
3.7 KiB
C++
108 lines
3.7 KiB
C++
// Copyright (C) 2023 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Utility module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Utility/VertexBuffer.hpp>
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#include <Nazara/Core/Error.hpp>
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#include <Nazara/Core/ErrorFlags.hpp>
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#include <Nazara/Utility/Debug.hpp>
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namespace Nz
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{
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VertexBuffer::VertexBuffer(std::shared_ptr<const VertexDeclaration> vertexDeclaration, std::shared_ptr<Buffer> buffer) :
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m_buffer(std::move(buffer)),
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m_vertexDeclaration(std::move(vertexDeclaration)),
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m_startOffset(0)
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{
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NazaraAssert(m_buffer, "invalid buffer");
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NazaraAssert(m_buffer->GetType() == BufferType::Vertex, "buffer must be an vertex buffer");
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m_endOffset = m_buffer->GetSize();
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m_vertexCount = SafeCast<UInt32>((m_vertexDeclaration) ? m_endOffset / m_vertexDeclaration->GetStride() : 0);
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}
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VertexBuffer::VertexBuffer(std::shared_ptr<const VertexDeclaration> vertexDeclaration, std::shared_ptr<Buffer> buffer, UInt64 offset, UInt64 size) :
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m_buffer(std::move(buffer)),
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m_vertexDeclaration(std::move(vertexDeclaration)),
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m_endOffset(size),
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m_startOffset(offset)
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{
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NazaraAssert(m_buffer, "invalid buffer");
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NazaraAssert(m_buffer->GetType() == BufferType::Vertex, "buffer must be an vertex buffer");
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m_vertexCount = SafeCast<UInt32>((m_vertexDeclaration) ? m_endOffset / m_vertexDeclaration->GetStride() : 0);
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}
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VertexBuffer::VertexBuffer(std::shared_ptr<const VertexDeclaration> vertexDeclaration, UInt32 vertexCount, BufferUsageFlags usage, const BufferFactory& bufferFactory, const void* initialData) :
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m_vertexDeclaration(std::move(vertexDeclaration)),
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m_vertexCount(vertexCount),
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m_startOffset(0)
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{
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NazaraAssert(m_vertexDeclaration, "invalid vertex declaration");
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NazaraAssert(vertexCount > 0, "invalid vertex count");
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m_endOffset = vertexCount * m_vertexDeclaration->GetStride();
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m_buffer = bufferFactory(BufferType::Vertex, m_endOffset, usage, initialData);
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}
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bool VertexBuffer::Fill(const void* data, UInt64 startVertex, UInt64 length)
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{
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UInt64 stride = m_vertexDeclaration->GetStride();
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return FillRaw(data, startVertex*stride, length*stride);
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}
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bool VertexBuffer::FillRaw(const void* data, UInt64 offset, UInt64 size)
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{
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NazaraAssert(m_buffer, "Invalid buffer");
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NazaraAssert(m_startOffset + offset + size <= m_endOffset, "Exceeding virtual buffer size");
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return m_buffer->Fill(data, m_startOffset + offset, size);
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}
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void* VertexBuffer::Map(UInt64 startVertex, UInt64 length)
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{
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UInt64 stride = m_vertexDeclaration->GetStride();
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return MapRaw(startVertex * stride, length * stride);
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}
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void* VertexBuffer::Map(UInt64 startVertex, UInt64 length) const
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{
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NazaraAssert(m_buffer, "Invalid buffer");
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NazaraAssert(m_vertexDeclaration, "Invalid vertex declaration");
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UInt64 stride = m_vertexDeclaration->GetStride();
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return MapRaw(startVertex * stride, length * stride);
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}
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void* VertexBuffer::MapRaw(UInt64 offset, UInt64 size)
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{
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NazaraAssert(m_buffer, "Invalid buffer");
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NazaraAssert(m_startOffset + offset + size <= m_endOffset, "Exceeding virtual buffer size");
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return m_buffer->Map(offset, size);
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}
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void* VertexBuffer::MapRaw(UInt64 offset, UInt64 size) const
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{
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NazaraAssert(m_buffer, "Invalid buffer");
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NazaraAssert(m_startOffset + offset + size <= m_endOffset, "Exceeding virtual buffer size");
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return m_buffer->Map(offset, size);
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}
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void VertexBuffer::SetVertexDeclaration(std::shared_ptr<const VertexDeclaration> vertexDeclaration)
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{
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NazaraAssert(vertexDeclaration, "Invalid vertex declaration");
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m_vertexCount = SafeCast<UInt32>((m_endOffset - m_startOffset) / vertexDeclaration->GetStride());
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m_vertexDeclaration = std::move(vertexDeclaration);
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}
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void VertexBuffer::Unmap() const
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{
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m_buffer->Unmap();
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}
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}
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