103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
// Copyright (C) 2024 Jérôme "SirLynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Core/IndexBuffer.hpp>
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#include <Nazara/Core/Algorithm.hpp>
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#include <Nazara/Core/Config.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/Core/IndexIterator.hpp>
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#include <Nazara/Core/IndexMapper.hpp>
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#include <Nazara/Core/Debug.hpp>
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namespace Nz
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{
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IndexBuffer::IndexBuffer(IndexType indexType, std::shared_ptr<Buffer> buffer) :
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m_buffer(std::move(buffer)),
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m_indexType(indexType),
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m_endOffset(m_buffer->GetSize()),
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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::Index, "buffer must be an index buffer");
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m_endOffset = m_buffer->GetSize();
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m_indexCount = SafeCast<UInt32>(m_endOffset / GetStride());
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}
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IndexBuffer::IndexBuffer(IndexType indexType, std::shared_ptr<Buffer> buffer, UInt64 offset, UInt64 size) :
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m_buffer(std::move(buffer)),
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m_indexType(indexType),
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m_endOffset(offset + 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::Index, "buffer must be an index buffer");
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NazaraAssert(size > 0, "invalid buffer size");
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m_indexCount = SafeCast<UInt32>(size / GetStride());
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}
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IndexBuffer::IndexBuffer(IndexType indexType, UInt32 indexCount, BufferUsageFlags usage, const BufferFactory& bufferFactory, const void* initialData) :
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m_indexType(indexType),
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m_indexCount(indexCount),
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m_startOffset(0)
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{
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NazaraAssert(indexCount > 0, "invalid index count");
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m_endOffset = indexCount * GetStride();
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m_buffer = bufferFactory(BufferType::Index, m_endOffset, usage, initialData);
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}
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UInt64 IndexBuffer::ComputeCacheMissCount()
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{
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IndexMapper mapper(*this);
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return Nz::ComputeCacheMissCount(mapper.begin(), m_indexCount);
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}
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bool IndexBuffer::Fill(const void* data, UInt64 startIndex, UInt64 length)
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{
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UInt64 stride = GetStride();
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return FillRaw(data, startIndex*stride, length*stride);
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}
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bool IndexBuffer::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* IndexBuffer::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* IndexBuffer::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 IndexBuffer::Optimize()
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{
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IndexMapper mapper(*this);
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OptimizeIndices(mapper.begin(), m_indexCount);
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}
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void IndexBuffer::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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