mirror of
https://github.com/Laupetin/OpenAssetTools.git
synced 2026-06-06 08:42:35 +00:00
LJW-Dev
814 lines
32 KiB
C++
814 lines
32 KiB
C++
#include "BSPCreator.h"
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#include "BSPUtil.h"
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#include "XModel/Gltf/GltfBinInput.h"
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#include "XModel/Gltf/GltfTextInput.h"
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#include "XModel/Gltf/Internal/GltfAccessor.h"
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#include "XModel/Gltf/Internal/GltfBuffer.h"
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#include "XModel/Gltf/Internal/GltfBufferView.h"
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#include "XModel/Gltf/JsonGltf.h"
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#include "XModel/Tangentspace.h"
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#pragma warning(push, 0)
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#include <Eigen>
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#pragma warning(pop)
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#include <deque>
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#include <exception>
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#include <format>
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#include <iostream>
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#include <limits>
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#include <numbers>
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#include <string>
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namespace
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{
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struct AccessorsForVertex
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{
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unsigned m_position_accessor;
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unsigned m_normal_accessor;
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std::optional<unsigned> m_color_accessor;
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std::optional<unsigned> m_uv_accessor;
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unsigned m_index_accessor;
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};
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void RhcToLhcCoordinates(float (&coords)[3])
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{
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const float two[3]{coords[0], coords[1], coords[2]};
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coords[0] = two[0];
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coords[1] = -two[2];
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coords[2] = two[1];
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}
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void RhcToLhcIndices(unsigned (&indices)[3])
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{
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const unsigned two[3]{indices[0], indices[1], indices[2]};
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indices[0] = two[2];
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indices[1] = two[1];
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indices[2] = two[0];
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}
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} // namespace
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namespace
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{
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using namespace BSP;
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using namespace gltf;
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class GltfLoadException final : std::exception
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{
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public:
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explicit GltfLoadException(std::string message)
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: m_message(std::move(message))
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{
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}
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[[nodiscard]] const std::string& Str() const
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{
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return m_message;
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}
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[[nodiscard]] const char* what() const noexcept override
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{
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return m_message.c_str();
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}
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private:
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std::string m_message;
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};
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class BSPLoader
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{
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private:
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BSPData* m_bsp;
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BSPWorld* m_curr_bsp_world;
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bool m_is_world_gfx;
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std::vector<std::unique_ptr<Accessor>> m_accessors;
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std::vector<std::unique_ptr<BufferView>> m_buffer_views;
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std::vector<std::unique_ptr<Buffer>> m_buffers;
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std::optional<Accessor*> GetAccessorForIndex(const char* attributeName,
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const std::optional<unsigned> index,
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std::initializer_list<JsonAccessorType> allowedAccessorTypes,
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std::initializer_list<JsonAccessorComponentType> allowedAccessorComponentTypes) const
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{
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if (!index)
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return std::nullopt;
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if (*index > m_accessors.size())
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throw GltfLoadException(std::format("Index for {} accessor out of bounds", attributeName));
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auto* accessor = m_accessors[*index].get();
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const auto maybeType = accessor->GetType();
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if (maybeType)
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{
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if (std::ranges::find(allowedAccessorTypes, *maybeType) == allowedAccessorTypes.end())
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throw GltfLoadException(std::format("Accessor for {} has unsupported type {}", attributeName, static_cast<unsigned>(*maybeType)));
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}
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const auto maybeComponentType = accessor->GetComponentType();
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if (maybeComponentType)
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{
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if (std::ranges::find(allowedAccessorComponentTypes, *maybeComponentType) == allowedAccessorComponentTypes.end())
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throw GltfLoadException(
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std::format("Accessor for {} has unsupported component type {}", attributeName, static_cast<unsigned>(*maybeComponentType)));
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}
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return accessor;
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}
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static void VerifyAccessorVertexCount(const char* accessorType, const Accessor* accessor, const size_t vertexCount)
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{
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if (accessor->GetCount() != vertexCount)
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throw GltfLoadException(std::format("Element count of {} accessor does not match expected vertex count of {}", accessorType, vertexCount));
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}
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using Transform3f = Eigen::Transform<float, 3, Eigen::Affine>;
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Eigen::Matrix4f createNodeMatrix(const gltf::JsonNode& node)
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{
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if (node.matrix)
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return Eigen::Matrix4f({
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{(*node.matrix)[0], (*node.matrix)[4], (*node.matrix)[8], (*node.matrix)[12]},
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{(*node.matrix)[1], (*node.matrix)[5], (*node.matrix)[9], (*node.matrix)[13]},
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{(*node.matrix)[2], (*node.matrix)[6], (*node.matrix)[10], (*node.matrix)[14]},
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{(*node.matrix)[3], (*node.matrix)[7], (*node.matrix)[11], (*node.matrix)[15]}
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});
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float localTranslation[3];
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float localRotation[4];
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float localScale[3];
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if (node.translation)
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{
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localTranslation[0] = (*node.translation)[0];
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localTranslation[1] = (*node.translation)[1];
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localTranslation[2] = (*node.translation)[2];
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}
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else
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{
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localTranslation[0] = 0.0f;
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localTranslation[1] = 0.0f;
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localTranslation[2] = 0.0f;
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}
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if (node.rotation)
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{
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localRotation[0] = (*node.rotation)[0];
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localRotation[1] = (*node.rotation)[1];
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localRotation[2] = (*node.rotation)[2];
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localRotation[3] = (*node.rotation)[3];
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}
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else
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{
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localRotation[0] = 0.0f;
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localRotation[1] = 0.0f;
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localRotation[2] = 0.0f;
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localRotation[3] = 1.0f;
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}
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if (node.scale)
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{
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localScale[0] = (*node.scale)[0];
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localScale[1] = (*node.scale)[1];
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localScale[2] = (*node.scale)[2];
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}
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else
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{
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localScale[0] = 1.0f;
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localScale[1] = 1.0f;
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localScale[2] = 1.0f;
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}
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Eigen::Vector3f translation(localTranslation[0], localTranslation[1], localTranslation[2]);
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Eigen::Quaternionf rotation(localRotation[3], localRotation[0], localRotation[1], localRotation[2]); // GLTF is XYZW, Eigen is WXYZ
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Eigen::Vector3f scale(localScale[0], localScale[1], localScale[2]);
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Transform3f T;
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T = T.fromPositionOrientationScale(translation, rotation, scale);
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return T.matrix();
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}
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unsigned CreateVertices(
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const AccessorsForVertex& accessorsForVertex, const gltf::JsonNode& node, Eigen::Matrix4f& nodeMatrix, BSPSurface& surface, vec4_t vertexColor)
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{
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// clang-format off
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const auto* positionAccessor = GetAccessorForIndex(
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"POSITION",
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accessorsForVertex.m_position_accessor,
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{ JsonAccessorType::VEC3 },
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{ JsonAccessorComponentType::FLOAT }
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).value_or(nullptr);
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// clang-format on
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assert(positionAccessor != nullptr);
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const auto vertexCount = positionAccessor->GetCount();
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NullAccessor nullAccessor(vertexCount);
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OnesAccessor onesAccessor(vertexCount);
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// clang-format off
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const auto* normalAccessor = GetAccessorForIndex(
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"NORMAL",
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accessorsForVertex.m_normal_accessor,
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{ JsonAccessorType::VEC3 },
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{ JsonAccessorComponentType::FLOAT }
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).value_or(nullptr);
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VerifyAccessorVertexCount("NORMAL", normalAccessor, vertexCount);
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assert(normalAccessor != nullptr);
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const auto* uvAccessor = GetAccessorForIndex(
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"TEXCOORD_0",
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accessorsForVertex.m_uv_accessor,
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{ JsonAccessorType::VEC2 },
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{ JsonAccessorComponentType::FLOAT, JsonAccessorComponentType::UNSIGNED_BYTE, JsonAccessorComponentType::UNSIGNED_SHORT }
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).value_or(&nullAccessor);
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VerifyAccessorVertexCount("TEXCOORD_0", uvAccessor, vertexCount);
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const auto* colorAccessor = GetAccessorForIndex(
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"COLOR_0",
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accessorsForVertex.m_color_accessor,
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{ JsonAccessorType::VEC3, JsonAccessorType::VEC4 },
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{ JsonAccessorComponentType::FLOAT, JsonAccessorComponentType::UNSIGNED_BYTE, JsonAccessorComponentType::UNSIGNED_SHORT }
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).value_or(&onesAccessor);
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VerifyAccessorVertexCount("COLOR_0", colorAccessor, vertexCount);
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const auto* indexAccessor = GetAccessorForIndex(
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"INDICES",
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accessorsForVertex.m_index_accessor,
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{ JsonAccessorType::SCALAR },
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{ JsonAccessorComponentType::UNSIGNED_BYTE, JsonAccessorComponentType::UNSIGNED_SHORT, JsonAccessorComponentType::UNSIGNED_INT }
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).value_or(nullptr);
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assert(indexAccessor != nullptr);
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// clang-format on
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const auto indexCount = indexAccessor->GetCount();
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if (indexCount % 3 != 0)
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throw GltfLoadException("Index count must be dividable by 3 for triangles");
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const auto faceCount = indexCount / 3u;
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if (faceCount > UINT16_MAX)
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throw GltfLoadException("Face count exceeded the UINT16_MAX");
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surface.vertexCount = static_cast<uint16_t>(vertexCount);
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surface.triCount = static_cast<uint16_t>(faceCount);
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surface.indexOfFirstIndex = static_cast<int>(m_curr_bsp_world->indices.size());
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surface.indexOfFirstVertex = static_cast<int>(m_curr_bsp_world->vertices.size());
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for (auto faceIndex = 0u; faceIndex < faceCount; faceIndex++)
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{
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unsigned indices[3];
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if (!indexAccessor->GetUnsigned(faceIndex * 3u + 0u, indices[0]) || !indexAccessor->GetUnsigned(faceIndex * 3u + 1u, indices[1])
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|| !indexAccessor->GetUnsigned(faceIndex * 3u + 2u, indices[2]))
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{
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assert(false);
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}
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if (indices[0] > UINT16_MAX || indices[1] > UINT16_MAX || indices[2] > UINT16_MAX)
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throw GltfLoadException("Index number exceeded the UINT16_MAX");
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RhcToLhcIndices(indices);
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m_curr_bsp_world->indices.emplace_back(static_cast<uint16_t>(indices[0]));
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m_curr_bsp_world->indices.emplace_back(static_cast<uint16_t>(indices[1]));
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m_curr_bsp_world->indices.emplace_back(static_cast<uint16_t>(indices[2]));
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}
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const auto vertexOffset = static_cast<unsigned>(m_curr_bsp_world->vertices.size());
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m_curr_bsp_world->vertices.reserve(vertexOffset + vertexCount);
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for (auto vertexIndex = 0u; vertexIndex < vertexCount; vertexIndex++)
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{
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BSPVertex vertex;
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if (!positionAccessor->GetFloatVec3(vertexIndex, vertex.pos.v) || !normalAccessor->GetFloatVec3(vertexIndex, vertex.normal.v)
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|| !colorAccessor->GetFloatVec4(vertexIndex, vertex.color.v) || !uvAccessor->GetFloatVec2(vertexIndex, vertex.texCoord.v))
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{
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assert(false);
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}
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vertex.color.x *= vertexColor.x;
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vertex.color.y *= vertexColor.y;
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vertex.color.z *= vertexColor.z;
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vertex.color.w *= vertexColor.w;
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Eigen::Vector4f position(vertex.pos.x, vertex.pos.y, vertex.pos.z, 1.0f);
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Eigen::Vector4f transformedPosition = nodeMatrix * position;
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vertex.pos.x = transformedPosition.x();
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vertex.pos.y = transformedPosition.y();
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vertex.pos.z = transformedPosition.z();
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RhcToLhcCoordinates(vertex.pos.v);
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RhcToLhcCoordinates(vertex.normal.v);
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m_curr_bsp_world->vertices.emplace_back(vertex);
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}
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// generate tangent and binormal vectors
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tangent_space::VertexData vertexData{
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&m_curr_bsp_world->vertices[surface.indexOfFirstVertex].pos,
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sizeof(BSPVertex),
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&m_curr_bsp_world->vertices[surface.indexOfFirstVertex].normal,
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sizeof(BSPVertex),
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&m_curr_bsp_world->vertices[surface.indexOfFirstVertex].texCoord,
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sizeof(BSPVertex),
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&m_curr_bsp_world->vertices[surface.indexOfFirstVertex].tangent,
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sizeof(BSPVertex),
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&m_curr_bsp_world->vertices[surface.indexOfFirstVertex].binormal,
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sizeof(BSPVertex),
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&m_curr_bsp_world->indices[surface.indexOfFirstIndex],
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};
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tangent_space::CalculateTangentSpace(vertexData, faceCount, vertexCount);
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return vertexOffset;
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}
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bool addNodeToBSP(const JsonRoot& jRoot, const gltf::JsonNode& node)
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{
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Eigen::Matrix4f nodeMatrix = createNodeMatrix(node);
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if (m_is_world_gfx && node.extensions && node.extensions->KHR_lights_punctual)
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{
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int lightIndex = node.extensions->KHR_lights_punctual->light;
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assert(lightIndex >= 0);
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if (m_bsp->lights[lightIndex].hasPosBeenSet == true)
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con::warn("Internal error, multiple nodes reference the same light. Light positions/rotations are likely incorrect.");
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Eigen::Vector4f position(0, 0, 0, 1.0f);
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Eigen::Vector4f transformedPosition = nodeMatrix * position;
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m_bsp->lights[lightIndex].pos = vec3_t{transformedPosition.x(), transformedPosition.y(), transformedPosition.z()};
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RhcToLhcCoordinates(m_bsp->lights[lightIndex].pos.v);
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// GLTF spec uses +Y up and the default light direction is straight down
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Eigen::Vector3f defaultDirection(0.0f, -1.0f, 0.0f);
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Eigen::Affine3f affineTransform(nodeMatrix);
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Eigen::Matrix3f rotationMatrix = affineTransform.rotation();
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Eigen::Vector3f outputDirection = rotationMatrix * defaultDirection;
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outputDirection.normalize();
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m_bsp->lights[lightIndex].direction = vec3_t{outputDirection.x(), outputDirection.y(), outputDirection.z()};
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m_bsp->lights[lightIndex].hasPosBeenSet = true;
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return true;
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}
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if (node.mesh)
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{
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assert(jRoot.meshes);
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const auto& mesh = jRoot.meshes.value()[node.mesh.value()];
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for (const auto& primitive : mesh.primitives)
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{
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if (!primitive.indices)
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throw GltfLoadException("Requires primitives indices");
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if (primitive.mode.value_or(JsonMeshPrimitivesMode::TRIANGLES) != JsonMeshPrimitivesMode::TRIANGLES)
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throw GltfLoadException("Only triangles are supported");
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if (!primitive.attributes.POSITION)
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throw GltfLoadException("Requires primitives attribute POSITION");
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if (!primitive.attributes.NORMAL)
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throw GltfLoadException("Requires primitives attribute NORMAL");
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const AccessorsForVertex accessorsForVertex{
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.m_position_accessor = *primitive.attributes.POSITION,
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.m_normal_accessor = *primitive.attributes.NORMAL,
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.m_color_accessor = primitive.attributes.COLOR_0,
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.m_uv_accessor = primitive.attributes.TEXCOORD_0,
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.m_index_accessor = *primitive.indices,
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};
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BSPSurface surface;
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if (primitive.material)
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surface.materialIndex = *primitive.material;
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else
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surface.materialIndex = m_curr_bsp_world->materials.size() - 1; // last material is used for colour only meshes
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vec4_t vertexColour = m_curr_bsp_world->materials.at(surface.materialIndex).materialColour;
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CreateVertices(accessorsForVertex, node, nodeMatrix, surface, vertexColour);
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m_curr_bsp_world->surfaces.emplace_back(surface);
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return true;
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}
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}
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return false;
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}
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static std::vector<unsigned> GetRootNodes(const JsonRoot& jRoot)
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{
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if (!jRoot.nodes || jRoot.nodes->empty())
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return {};
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const auto nodeCount = jRoot.nodes->size();
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std::vector<unsigned> rootNodes;
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std::vector<bool> isChild(nodeCount);
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for (const auto& node : jRoot.nodes.value())
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{
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if (!node.children)
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continue;
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for (const auto childIndex : node.children.value())
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{
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if (childIndex >= nodeCount)
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throw GltfLoadException("Illegal child index");
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if (isChild[childIndex])
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throw GltfLoadException("Node hierarchy is not a set of disjoint strict trees");
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isChild[childIndex] = true;
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}
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}
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for (auto nodeIndex = 0u; nodeIndex < nodeCount; nodeIndex++)
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{
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if (!isChild[nodeIndex])
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rootNodes.emplace_back(nodeIndex);
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}
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return rootNodes;
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}
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void LoadMaterials(const JsonRoot& jRoot)
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{
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if (jRoot.materials)
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{
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m_curr_bsp_world->materials.reserve((*jRoot.materials).size());
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for (auto& jsMaterial : *jRoot.materials)
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{
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BSPMaterial material;
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if (jsMaterial.name && (*jsMaterial.name).length() != 0)
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material.materialName = *jsMaterial.name;
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else
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material.materialName = "";
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if (jsMaterial.pbrMetallicRoughness)
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{
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if (jsMaterial.pbrMetallicRoughness->baseColorFactor)
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{
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material.materialColour.x = (*jsMaterial.pbrMetallicRoughness->baseColorFactor)[0];
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material.materialColour.y = (*jsMaterial.pbrMetallicRoughness->baseColorFactor)[1];
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material.materialColour.z = (*jsMaterial.pbrMetallicRoughness->baseColorFactor)[2];
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material.materialColour.w = (*jsMaterial.pbrMetallicRoughness->baseColorFactor)[3];
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}
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else
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{
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material.materialColour.x = 1.0f;
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material.materialColour.y = 1.0f;
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material.materialColour.z = 1.0f;
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material.materialColour.w = 1.0f;
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}
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if (jsMaterial.pbrMetallicRoughness->baseColorTexture)
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material.materialType = MATERIAL_TYPE_TEXTURE;
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else
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material.materialType = MATERIAL_TYPE_COLOUR;
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}
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else
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{
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material.materialType = MATERIAL_TYPE_COLOUR;
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material.materialColour.x = 1.0f;
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material.materialColour.y = 1.0f;
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material.materialColour.z = 1.0f;
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material.materialColour.w = 1.0f;
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}
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m_curr_bsp_world->materials.emplace_back(material);
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}
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}
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// last material is used when a primitve has no material/colour data
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BSPMaterial colorMaterial;
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colorMaterial.materialType = MATERIAL_TYPE_COLOUR;
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colorMaterial.materialName = "";
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colorMaterial.materialColour.x = 1.0f;
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colorMaterial.materialColour.y = 1.0f;
|
|
colorMaterial.materialColour.z = 1.0f;
|
|
colorMaterial.materialColour.w = 1.0f;
|
|
m_curr_bsp_world->materials.emplace_back(colorMaterial);
|
|
}
|
|
|
|
void LoadLights(const JsonRoot& jRoot)
|
|
{
|
|
if (!jRoot.extensions)
|
|
return;
|
|
if (!jRoot.extensions->KHR_lights_punctual)
|
|
return;
|
|
if (!jRoot.extensions->KHR_lights_punctual->lights)
|
|
return;
|
|
const std::vector<JsonPunctualLight>& jsLightArray = jRoot.extensions->KHR_lights_punctual->lights.value();
|
|
|
|
m_bsp->lights.reserve(jsLightArray.size());
|
|
for (const JsonPunctualLight& jsLight : jsLightArray)
|
|
{
|
|
if (jsLight.type == JsonPunctualLightType::POINT)
|
|
con::error("Any point lights will be converted to a spotlight as point lights are unsupported right now.");
|
|
|
|
BSPLight light{};
|
|
|
|
// position and direction data will be set during node traversal
|
|
light.hasPosBeenSet = false;
|
|
|
|
if (!jsLight.color)
|
|
{
|
|
light.colour.x = 1.0f;
|
|
light.colour.y = 1.0f;
|
|
light.colour.z = 1.0f;
|
|
}
|
|
else
|
|
{
|
|
light.colour.x = (*jsLight.color)[0];
|
|
light.colour.y = (*jsLight.color)[1];
|
|
light.colour.z = (*jsLight.color)[2];
|
|
}
|
|
|
|
if (!jsLight.intensity)
|
|
light.intensity = 100000.0f; // adjusted from spec to better match BO2
|
|
else
|
|
light.intensity = *jsLight.intensity;
|
|
|
|
if (!jsLight.range)
|
|
light.range = 1000.0f; // adjusted from spec to better match BO2
|
|
else
|
|
light.range = *jsLight.range;
|
|
|
|
if (jsLight.type == JsonPunctualLightType::DIRECTIONAL)
|
|
{
|
|
light.type = LIGHT_TYPE_DIRECTIONAL;
|
|
}
|
|
else if (jsLight.type == JsonPunctualLightType::POINT)
|
|
{
|
|
light.type = LIGHT_TYPE_POINT;
|
|
}
|
|
else // JsonPunctualLightType::SPOT
|
|
{
|
|
light.type = LIGHT_TYPE_SPOT;
|
|
|
|
assert(jsLight.spot);
|
|
if (!jsLight.spot->innerConeAngle)
|
|
light.innerConeAngle = 0.0f;
|
|
else
|
|
light.innerConeAngle = *jsLight.spot->innerConeAngle;
|
|
|
|
if (!jsLight.spot->outerConeAngle)
|
|
light.outerConeAngle = 3.14159265359f / 4.0f; /// spec of 45 degrees
|
|
else
|
|
light.outerConeAngle = *jsLight.spot->outerConeAngle;
|
|
}
|
|
|
|
m_bsp->lights.emplace_back(light);
|
|
}
|
|
}
|
|
|
|
void TraverseNodes(const JsonRoot& jRoot)
|
|
{
|
|
// Make sure there are any nodes to traverse
|
|
if (!jRoot.nodes || jRoot.nodes->empty())
|
|
return;
|
|
|
|
std::deque<unsigned> nodeQueue;
|
|
const std::vector<unsigned> rootNodes = GetRootNodes(jRoot);
|
|
|
|
for (const auto rootNode : rootNodes)
|
|
nodeQueue.emplace_back(rootNode);
|
|
|
|
while (!nodeQueue.empty())
|
|
{
|
|
const auto& node = jRoot.nodes.value()[nodeQueue.front()];
|
|
nodeQueue.pop_front();
|
|
|
|
if (node.children)
|
|
{
|
|
for (const auto childIndex : *node.children)
|
|
nodeQueue.emplace_back(childIndex);
|
|
|
|
if (node.matrix || node.translation || node.rotation || node.scale)
|
|
con::warn("Parent node has position data that won't be used");
|
|
}
|
|
|
|
addNodeToBSP(jRoot, node);
|
|
}
|
|
}
|
|
|
|
void CreateBuffers(const JsonRoot& jRoot, Input& gltfInput)
|
|
{
|
|
if (!jRoot.buffers)
|
|
return;
|
|
|
|
m_buffers.reserve(jRoot.buffers->size());
|
|
for (const auto& jBuffer : *jRoot.buffers)
|
|
{
|
|
if (!jBuffer.uri)
|
|
{
|
|
const void* embeddedBufferPtr = nullptr;
|
|
size_t embeddedBufferSize = 0u;
|
|
if (!gltfInput.GetEmbeddedBuffer(embeddedBufferPtr, embeddedBufferSize) || embeddedBufferSize == 0u)
|
|
throw GltfLoadException("Buffer tried to access embedded data when there is none");
|
|
|
|
m_buffers.emplace_back(std::make_unique<EmbeddedBuffer>(embeddedBufferPtr, embeddedBufferSize));
|
|
}
|
|
else if (DataUriBuffer::IsDataUri(*jBuffer.uri))
|
|
{
|
|
auto dataUriBuffer = std::make_unique<DataUriBuffer>();
|
|
if (!dataUriBuffer->ReadDataFromUri(*jBuffer.uri))
|
|
throw GltfLoadException("Buffer has invalid data uri");
|
|
|
|
m_buffers.emplace_back(std::move(dataUriBuffer));
|
|
}
|
|
else
|
|
{
|
|
throw GltfLoadException("File buffers are not supported");
|
|
}
|
|
}
|
|
}
|
|
|
|
void CreateBufferViews(const JsonRoot& jRoot)
|
|
{
|
|
if (!jRoot.bufferViews)
|
|
return;
|
|
|
|
m_buffer_views.reserve(jRoot.bufferViews->size());
|
|
for (const auto& jBufferView : *jRoot.bufferViews)
|
|
{
|
|
if (jBufferView.buffer >= m_buffers.size())
|
|
throw GltfLoadException("Buffer view references invalid buffer");
|
|
|
|
const auto* buffer = m_buffers[jBufferView.buffer].get();
|
|
const auto offset = jBufferView.byteOffset.value_or(0u);
|
|
const auto length = jBufferView.byteLength;
|
|
const auto stride = jBufferView.byteStride.value_or(0u);
|
|
|
|
if (offset + length > buffer->GetSize())
|
|
throw GltfLoadException("Buffer view is defined larger as underlying buffer");
|
|
|
|
m_buffer_views.emplace_back(std::make_unique<BufferView>(buffer, offset, length, stride));
|
|
}
|
|
}
|
|
|
|
void CreateAccessors(const JsonRoot& jRoot)
|
|
{
|
|
if (!jRoot.accessors)
|
|
return;
|
|
|
|
m_accessors.reserve(jRoot.accessors->size());
|
|
for (const auto& jAccessor : *jRoot.accessors)
|
|
{
|
|
if (!jAccessor.bufferView)
|
|
{
|
|
m_accessors.emplace_back(std::make_unique<NullAccessor>(jAccessor.count));
|
|
continue;
|
|
}
|
|
|
|
if (*jAccessor.bufferView >= m_buffer_views.size())
|
|
throw GltfLoadException("Accessor references invalid buffer view");
|
|
|
|
const auto* bufferView = m_buffer_views[*jAccessor.bufferView].get();
|
|
const auto byteOffset = jAccessor.byteOffset.value_or(0u);
|
|
if (jAccessor.componentType == JsonAccessorComponentType::FLOAT)
|
|
m_accessors.emplace_back(std::make_unique<FloatAccessor>(bufferView, jAccessor.type, byteOffset, jAccessor.count));
|
|
else if (jAccessor.componentType == JsonAccessorComponentType::UNSIGNED_BYTE)
|
|
m_accessors.emplace_back(std::make_unique<UnsignedByteAccessor>(bufferView, jAccessor.type, byteOffset, jAccessor.count));
|
|
else if (jAccessor.componentType == JsonAccessorComponentType::UNSIGNED_SHORT)
|
|
m_accessors.emplace_back(std::make_unique<UnsignedShortAccessor>(bufferView, jAccessor.type, byteOffset, jAccessor.count));
|
|
else if (jAccessor.componentType == JsonAccessorComponentType::UNSIGNED_INT)
|
|
m_accessors.emplace_back(std::make_unique<UnsignedIntAccessor>(bufferView, jAccessor.type, byteOffset, jAccessor.count));
|
|
else
|
|
throw GltfLoadException(std::format("Accessor has unsupported component type {}", static_cast<unsigned>(jAccessor.componentType)));
|
|
}
|
|
}
|
|
|
|
public:
|
|
bool addGLTFDataToBSP(Input& gltfInput, bool isGfxWorld)
|
|
{
|
|
JsonRoot jRoot;
|
|
try
|
|
{
|
|
jRoot = gltfInput.GetJson().get<JsonRoot>();
|
|
}
|
|
catch (const nlohmann::json::exception& e)
|
|
{
|
|
con::error("Failed to parse GLTF JSON: {}", e.what());
|
|
return false;
|
|
}
|
|
|
|
try
|
|
{
|
|
m_is_world_gfx = isGfxWorld;
|
|
if (isGfxWorld)
|
|
m_curr_bsp_world = &m_bsp->gfxWorld;
|
|
else
|
|
m_curr_bsp_world = &m_bsp->colWorld;
|
|
m_accessors.clear();
|
|
m_buffer_views.clear();
|
|
m_buffers.clear();
|
|
|
|
CreateBuffers(jRoot, gltfInput);
|
|
CreateBufferViews(jRoot);
|
|
CreateAccessors(jRoot);
|
|
|
|
if (isGfxWorld) // lights aren't needed in collision data
|
|
LoadLights(jRoot);
|
|
|
|
LoadMaterials(jRoot);
|
|
TraverseNodes(jRoot); // requires materials and lights
|
|
}
|
|
catch (const GltfLoadException& e)
|
|
{
|
|
con::error("Failed to load GLTF: {}", e.Str());
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
BSPLoader(BSPData* bsp)
|
|
: m_bsp(bsp)
|
|
{
|
|
m_curr_bsp_world = nullptr;
|
|
m_is_world_gfx = false;
|
|
};
|
|
};
|
|
} // namespace
|
|
|
|
namespace BSP
|
|
{
|
|
std::unique_ptr<BSPData> createBSPData(std::string& mapName, ISearchPath& searchPath)
|
|
{
|
|
bool seperateColFile = true;
|
|
bool isGfxFileGltf = true;
|
|
bool isColFileGltf = true;
|
|
|
|
std::string gfxFilePath = BSPUtil::getFileNameForBSPAsset("map_gfx.gltf");
|
|
auto gfxFile = searchPath.Open(gfxFilePath);
|
|
if (!gfxFile.IsOpen())
|
|
{
|
|
isGfxFileGltf = false;
|
|
gfxFilePath = BSPUtil::getFileNameForBSPAsset("map_gfx.glb");
|
|
gfxFile = searchPath.Open(gfxFilePath);
|
|
if (!gfxFile.IsOpen())
|
|
{
|
|
con::error("BSP Creator: Can't find map_gfx.gltf or map_gfx.glb.");
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
std::string colFilePath = BSPUtil::getFileNameForBSPAsset("map_col.gltf");
|
|
auto colFile = searchPath.Open(colFilePath);
|
|
if (!colFile.IsOpen())
|
|
{
|
|
isColFileGltf = false;
|
|
colFilePath = BSPUtil::getFileNameForBSPAsset("map_col.glb");
|
|
colFile = searchPath.Open(colFilePath);
|
|
if (!colFile.IsOpen())
|
|
{
|
|
con::info("BSP Creator: generating colision data from GLTF graphics data.");
|
|
seperateColFile = false;
|
|
}
|
|
}
|
|
|
|
std::unique_ptr<BSPData> bsp = std::make_unique<BSPData>();
|
|
bsp->name = mapName;
|
|
bsp->bspName = "maps/mp/" + mapName + ".d3dbsp";
|
|
|
|
BSPLoader loader(bsp.get());
|
|
if (isGfxFileGltf)
|
|
{
|
|
gltf::TextInput input;
|
|
if (!input.ReadGltfData(*gfxFile.m_stream))
|
|
return nullptr;
|
|
if (!loader.addGLTFDataToBSP(input, true))
|
|
return nullptr;
|
|
}
|
|
else
|
|
{
|
|
gltf::BinInput input;
|
|
if (!input.ReadGltfData(*gfxFile.m_stream))
|
|
return nullptr;
|
|
if (!loader.addGLTFDataToBSP(input, true))
|
|
return nullptr;
|
|
}
|
|
|
|
if (seperateColFile)
|
|
{
|
|
if (isColFileGltf)
|
|
{
|
|
gltf::TextInput input;
|
|
if (!input.ReadGltfData(*colFile.m_stream))
|
|
return nullptr;
|
|
if (!loader.addGLTFDataToBSP(input, false))
|
|
return nullptr;
|
|
}
|
|
else
|
|
{
|
|
gltf::BinInput input;
|
|
if (!input.ReadGltfData(*colFile.m_stream))
|
|
return nullptr;
|
|
if (!loader.addGLTFDataToBSP(input, false))
|
|
return nullptr;
|
|
}
|
|
}
|
|
else
|
|
bsp->colWorld = bsp->gfxWorld;
|
|
|
|
return bsp;
|
|
}
|
|
} // namespace BSP
|