77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
// Copyright (C) 2024 Jérôme "SirLynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - OpenGL renderer"
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// For conditions of distribution and use, see copyright notice in Export.hpp
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#include <NazaraUtils/Hash.hpp>
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namespace Nz::GL
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{
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inline bool operator==(const OpenGLVaoSetup& lhs, const OpenGLVaoSetup& rhs)
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{
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if (lhs.indexBuffer != rhs.indexBuffer)
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return false;
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const auto& compareAttribs = [](const auto& lAttribOpt, const auto& rAttribOpt)
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{
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if (lAttribOpt.has_value() != rAttribOpt.has_value())
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return false;
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if (lAttribOpt)
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{
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const auto& lAttrib = *lAttribOpt;
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const auto& rAttrib = *rAttribOpt;
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if (lAttrib.vertexBuffer != rAttrib.vertexBuffer)
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return false;
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if (lAttrib.size != rAttrib.size)
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return false;
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if (lAttrib.type != rAttrib.type)
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return false;
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if (lAttrib.normalized != rAttrib.normalized)
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return false;
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if (lAttrib.stride != rAttrib.stride)
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return false;
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if (lAttrib.pointer != rAttrib.pointer)
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return false;
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}
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return true;
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};
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return std::equal(lhs.vertexAttribs.begin(), lhs.vertexAttribs.end(), rhs.vertexAttribs.begin(), compareAttribs);
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}
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inline std::size_t OpenGLVaoSetupHasher::operator()(const OpenGLVaoSetup& setup) const
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{
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std::size_t seed = std::hash<GLuint>{}(setup.indexBuffer);
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std::size_t bindingIndex = 0;
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for (const auto& attribOpt : setup.vertexAttribs)
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{
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if (attribOpt)
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{
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const auto& attrib = attribOpt.value();
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HashCombine(seed, bindingIndex);
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HashCombine(seed, attrib.vertexBuffer);
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HashCombine(seed, attrib.size);
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HashCombine(seed, attrib.type);
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HashCombine(seed, attrib.normalized);
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HashCombine(seed, attrib.stride);
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HashCombine(seed, attrib.pointer);
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}
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bindingIndex++;
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}
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return seed;
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}
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}
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