370 lines
10 KiB
C++
370 lines
10 KiB
C++
// Copyright (C) 2020 Jérôme Leclercq
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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/VertexDeclaration.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/OffsetOf.hpp>
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#include <Nazara/Math/Matrix4.hpp>
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#include <Nazara/Utility/Config.hpp>
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#include <Nazara/Utility/Utility.hpp>
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#include <Nazara/Utility/VertexStruct.hpp>
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#include <Nazara/Utility/Debug.hpp>
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namespace Nz
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{
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namespace
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{
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std::size_t s_componentStride[ComponentType_Max + 1] =
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{
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4 * sizeof(UInt8), // ComponentType_Color
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1 * sizeof(double), // ComponentType_Double1
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2 * sizeof(double), // ComponentType_Double2
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3 * sizeof(double), // ComponentType_Double3
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4 * sizeof(double), // ComponentType_Double4
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1 * sizeof(float), // ComponentType_Float1
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2 * sizeof(float), // ComponentType_Float2
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3 * sizeof(float), // ComponentType_Float3
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4 * sizeof(float), // ComponentType_Float4
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1 * sizeof(UInt32), // ComponentType_Int1
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2 * sizeof(UInt32), // ComponentType_Int2
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3 * sizeof(UInt32), // ComponentType_Int3
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4 * sizeof(UInt32), // ComponentType_Int4
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4 * sizeof(float) // ComponentType_Quaternion
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};
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}
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VertexDeclaration::VertexDeclaration(VertexInputRate inputRate, std::initializer_list<ComponentEntry> components) :
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m_inputRate(inputRate)
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{
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ErrorFlags errFlags(ErrorFlag_ThrowException);
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std::size_t offset = 0;
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m_components.reserve(components.size());
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for (const ComponentEntry& entry : components)
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{
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NazaraAssert(IsTypeSupported(entry.type), "Component type 0x" + String::Number(entry.type, 16) + " is not supported by vertex declarations");
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NazaraAssert(entry.componentIndex == 0 || entry.component == VertexComponent_Userdata, "Only userdata components can have non-zero component indexes");
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if (entry.component != VertexComponent_Unused)
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{
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// Check for duplicates
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for (const Component& component : m_components)
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{
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if (component.component == entry.component && component.componentIndex == entry.componentIndex)
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NazaraError("Duplicate component type found");
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}
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}
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auto& component = m_components.emplace_back();
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component.component = entry.component;
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component.componentIndex = entry.componentIndex;
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component.offset = offset;
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component.type = entry.type;
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offset += s_componentStride[component.type];
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}
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m_stride = offset;
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}
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bool VertexDeclaration::IsTypeSupported(ComponentType type)
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{
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switch (type)
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{
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case ComponentType_Color:
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case ComponentType_Double1:
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case ComponentType_Double2:
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case ComponentType_Double3:
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case ComponentType_Double4:
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case ComponentType_Float1:
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case ComponentType_Float2:
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case ComponentType_Float3:
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case ComponentType_Float4:
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case ComponentType_Int1:
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case ComponentType_Int2:
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case ComponentType_Int3:
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case ComponentType_Int4:
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return true;
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case ComponentType_Quaternion:
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return false;
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}
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NazaraError("Component type not handled (0x" + String::Number(type, 16) + ')');
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return false;
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}
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bool VertexDeclaration::Initialize()
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{
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if (!VertexDeclarationLibrary::Initialize())
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{
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NazaraError("Failed to initialise library");
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return false;
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}
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try
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{
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ErrorFlags flags(ErrorFlag_Silent | ErrorFlag_ThrowException);
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auto NewDeclaration = [](VertexInputRate inputRate, std::initializer_list<ComponentEntry> components)
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{
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return New(inputRate, std::move(components));
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};
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// VertexLayout_XY : VertexStruct_XY
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s_declarations[VertexLayout_XY] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float2,
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0
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}
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});
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NazaraAssert(s_declarations[VertexLayout_XY]->GetStride() == sizeof(VertexStruct_XY), "Invalid stride for declaration VertexLayout_XY");
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s_declarations[VertexLayout_XY_Color] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float2,
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0
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},
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{
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VertexComponent_Color,
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ComponentType_Color,
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0
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},
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});
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NazaraAssert(s_declarations[VertexLayout_XY_Color]->GetStride() == sizeof(VertexStruct_XY_Color), "Invalid stride for declaration VertexLayout_XY_Color");
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// VertexLayout_XY_UV : VertexStruct_XY_UV
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s_declarations[VertexLayout_XY_UV] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float2,
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0
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},
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{
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VertexComponent_TexCoord,
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ComponentType_Float2,
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0
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},
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});
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NazaraAssert(s_declarations[VertexLayout_XY_UV]->GetStride() == sizeof(VertexStruct_XY_UV), "Invalid stride for declaration VertexLayout_XY_UV");
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// VertexLayout_XYZ : VertexStruct_XYZ
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s_declarations[VertexLayout_XYZ] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float3,
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0
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},
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});
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NazaraAssert(s_declarations[VertexLayout_XYZ]->GetStride() == sizeof(VertexStruct_XYZ), "Invalid stride for declaration VertexLayout_XYZ");
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// VertexLayout_XYZ_Color : VertexStruct_XYZ_Color
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s_declarations[VertexLayout_XYZ_Color] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_Color,
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ComponentType_Color,
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0
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}
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});
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NazaraAssert(s_declarations[VertexLayout_XYZ_Color]->GetStride() == sizeof(VertexStruct_XYZ_Color), "Invalid stride for declaration VertexLayout_XYZ_Color");
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// VertexLayout_XYZ_Color_UV : VertexStruct_XYZ_Color_UV
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s_declarations[VertexLayout_XYZ_Color_UV] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_Color,
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ComponentType_Color,
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0
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},
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{
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VertexComponent_TexCoord,
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ComponentType_Float2,
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0
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},
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});
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NazaraAssert(s_declarations[VertexLayout_XYZ_Color_UV]->GetStride() == sizeof(VertexStruct_XYZ_Color_UV), "Invalid stride for declaration VertexLayout_XYZ_Color_UV");
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// VertexLayout_XYZ_Normal : VertexStruct_XYZ_Normal
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s_declarations[VertexLayout_XYZ_Normal] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_Normal,
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ComponentType_Float3,
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0
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}
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});
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NazaraAssert(s_declarations[VertexLayout_XYZ_Normal]->GetStride() == sizeof(VertexStruct_XYZ_Normal), "Invalid stride for declaration VertexLayout_XYZ_Normal");
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// VertexLayout_XYZ_Normal_UV : VertexStruct_XYZ_Normal_UV
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s_declarations[VertexLayout_XYZ_Normal_UV] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_Normal,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_TexCoord,
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ComponentType_Float2,
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0
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}
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});
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NazaraAssert(s_declarations[VertexLayout_XYZ_Normal_UV]->GetStride() == sizeof(VertexStruct_XYZ_Normal_UV), "Invalid stride for declaration VertexLayout_XYZ_Normal_UV");
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// VertexLayout_XYZ_Normal_UV_Tangent : VertexStruct_XYZ_Normal_UV_Tangent
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s_declarations[VertexLayout_XYZ_Normal_UV_Tangent] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_Normal,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_TexCoord,
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ComponentType_Float2,
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0
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},
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{
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VertexComponent_Tangent,
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ComponentType_Float3,
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0
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}
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});
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NazaraAssert(s_declarations[VertexLayout_XYZ_Normal_UV_Tangent]->GetStride() == sizeof(VertexStruct_XYZ_Normal_UV_Tangent), "Invalid stride for declaration VertexLayout_XYZ_Normal_UV_Tangent");
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// VertexLayout_XYZ_Normal_UV_Tangent_Skinning : VertexStruct_XYZ_Normal_UV_Tangent_Skinning
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s_declarations[VertexLayout_XYZ_Normal_UV_Tangent_Skinning] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_Normal,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_TexCoord,
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ComponentType_Float2,
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0
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},
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{
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VertexComponent_Tangent,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_Userdata,
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ComponentType_Int1,
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0 // Weight count
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},
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{
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VertexComponent_Userdata,
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ComponentType_Float4,
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1 // Weights
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},
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{
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VertexComponent_Userdata,
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ComponentType_Int4,
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2 // Joint indexes
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},
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});
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NazaraAssert(s_declarations[VertexLayout_XYZ_Normal_UV_Tangent_Skinning]->GetStride() == sizeof(VertexStruct_XYZ_Normal_UV_Tangent_Skinning), "Invalid stride for declaration VertexLayout_XYZ_Normal_UV_Tangent_Skinning");
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// VertexLayout_XYZ_UV : VertexStruct_XYZ_UV
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s_declarations[VertexLayout_XYZ_UV] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Position,
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ComponentType_Float3,
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0
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},
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{
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VertexComponent_TexCoord,
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ComponentType_Float2,
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0
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}
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});
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NazaraAssert(s_declarations[VertexLayout_XYZ_UV]->GetStride() == sizeof(VertexStruct_XYZ_UV), "Invalid stride for declaration VertexLayout_XYZ_UV");
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// VertexLayout_Matrix4 : Matrix4f
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s_declarations[VertexLayout_Matrix4] = NewDeclaration(VertexInputRate::Vertex, {
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{
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VertexComponent_Userdata,
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ComponentType_Float4,
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0
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},
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{
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VertexComponent_Userdata,
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ComponentType_Float4,
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1
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},
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{
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VertexComponent_Userdata,
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ComponentType_Float4,
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2
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},
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{
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VertexComponent_Userdata,
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ComponentType_Float4,
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3
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}
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});
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NazaraAssert(s_declarations[VertexLayout_Matrix4]->GetStride() == sizeof(Matrix4f), "Invalid stride for declaration VertexLayout_Matrix4");
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}
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catch (const std::exception& e)
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{
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NazaraError("Failed to initialize vertex declaration: " + String(e.what()));
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return false;
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}
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return true;
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}
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void VertexDeclaration::Uninitialize()
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{
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VertexDeclarationLibrary::Uninitialize();
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s_declarations.fill(nullptr);
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}
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std::array<VertexDeclarationRef, VertexLayout_Max + 1> VertexDeclaration::s_declarations;
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VertexDeclarationLibrary::LibraryMap VertexDeclaration::s_library;
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}
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