mirror of
https://github.com/DarkflameUniverse/DarkflameServer.git
synced 2026-10-02 10:53:44 +00:00
c0054d8fa3
Glom models (multishader) drew their trees, rocks, fences and water white. Their conversions kept on disk from before meshes carried their multishader tag were still served (the cache format version was never bumped), so every part fell back to the LEGO shader, whose texture alpha lays the (mostly grey) texture over the vertex colors that hold the actual colors. Browsers also kept those models for a week. - Bump the conversion format so old conversions are made again, and put it in the manifests; the viewers add it to model and texture URLs. - Light scenery as the client's shaders do: the scene's sun and ambient light from its .lvl (read as level_read_lighting_info, 0x0102f8f0, and EnvironmentManager::SetLightEnv, 0x01088aa0, do), per vertex, clamped, instead of the view's own lights, environment map and tone mapping. The zone takes the lighting most of its objects' scenes have. - Programmable shaders read vertex colors and ignore NiMaterialProperty's color and alpha; unlit and untextured shaders (by mapShaders gameValue) leave out lighting or the texture. Fixed function stays as it was. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
766 lines
30 KiB
C++
766 lines
30 KiB
C++
#include "NifFile.h"
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#include <algorithm>
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#include <cmath>
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#include <cstring>
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#include <functional>
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#include <limits>
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#include <set>
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#include "json.hpp"
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namespace {
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constexpr uint32_t Version(uint32_t a, uint32_t b, uint32_t c, uint32_t d) { return (a << 24) | (b << 16) | (c << 8) | d; }
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constexpr uint32_t MIN_VERSION = Version(20, 2, 0, 5); // strings in a table and block sizes in the header
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constexpr uint32_t MAX_VERSION = Version(20, 3, 0, 9);
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constexpr uint32_t MAX_BLOCKS = 200000;
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constexpr uint32_t MAX_DEPTH = 64;
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constexpr uint16_t APP_CULLED = 1; // NiAVObject flag: hidden
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// Little-endian reads that fail (and stay failed) instead of running past the end
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class Reader {
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public:
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explicit Reader(std::string_view data) : m_Data(data) {}
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template<typename T>
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T Read() {
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T value{};
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if (!m_Ok || sizeof(T) > m_Data.size() - m_Pos) {
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m_Ok = false;
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return value;
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}
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std::memcpy(&value, m_Data.data() + m_Pos, sizeof(T));
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m_Pos += sizeof(T);
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return value;
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}
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float Float() { return Read<float>(); }
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uint8_t U8() { return Read<uint8_t>(); }
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uint16_t U16() { return Read<uint16_t>(); }
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uint32_t U32() { return Read<uint32_t>(); }
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int32_t I32() { return Read<int32_t>(); }
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void Skip(uint64_t bytes) {
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if (!m_Ok || bytes > m_Data.size() - m_Pos) {
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m_Ok = false;
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return;
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}
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m_Pos += static_cast<size_t>(bytes);
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}
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// `count` values of T, or empty (and failed) if there aren't that many
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template<typename T>
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std::vector<T> Array(uint64_t count) {
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std::vector<T> values;
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if (!m_Ok || count > (m_Data.size() - m_Pos) / sizeof(T)) {
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m_Ok = false;
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return values;
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}
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values.resize(static_cast<size_t>(count));
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std::memcpy(values.data(), m_Data.data() + m_Pos, static_cast<size_t>(count) * sizeof(T));
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m_Pos += static_cast<size_t>(count) * sizeof(T);
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return values;
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}
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std::string SizedString() {
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const auto length = U32();
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if (!m_Ok || length > m_Data.size() - m_Pos) {
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m_Ok = false;
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return {};
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}
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std::string value(m_Data.substr(m_Pos, length));
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m_Pos += length;
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return value;
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}
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bool Ok() const { return m_Ok; }
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size_t Position() const { return m_Pos; }
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private:
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std::string_view m_Data;
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size_t m_Pos = 0;
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bool m_Ok = true;
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};
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// Rotation (row-major, for column vectors), translation and uniform scale: p' = t + s * R p
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struct Transform {
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std::array<float, 9> r{ 1, 0, 0, 0, 1, 0, 0, 0, 1 };
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std::array<float, 3> t{};
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float s{ 1.0f };
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std::array<float, 3> Rotate(const std::array<float, 3>& v) const {
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return { r[0] * v[0] + r[1] * v[1] + r[2] * v[2], r[3] * v[0] + r[4] * v[1] + r[5] * v[2], r[6] * v[0] + r[7] * v[1] + r[8] * v[2] };
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}
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std::array<float, 3> Apply(const std::array<float, 3>& v) const {
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const auto rotated = Rotate(v);
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return { t[0] + s * rotated[0], t[1] + s * rotated[1], t[2] + s * rotated[2] };
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}
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// This transform, then `local` inside it (parent * child)
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Transform Then(const Transform& local) const {
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Transform out;
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for (int row = 0; row < 3; row++) {
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for (int col = 0; col < 3; col++) {
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out.r[row * 3 + col] = r[row * 3] * local.r[col] + r[row * 3 + 1] * local.r[3 + col] + r[row * 3 + 2] * local.r[6 + col];
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}
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}
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out.t = Apply(local.t);
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out.s = s * local.s;
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return out;
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}
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};
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// The properties in effect at a point of the tree: a child's own property of a type replaces its parent's
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struct Properties {
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int32_t material = -1;
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int32_t alpha = -1;
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int32_t texturing = -1;
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int32_t vertexColor = -1;
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int32_t stencil = -1;
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int32_t shaderTag = -1; // the nearest multishader tag ("S05__...") on the way down the tree
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};
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struct NetHeader {
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std::string name;
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};
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struct AvHeader {
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std::string name;
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uint16_t flags{};
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Transform transform;
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std::vector<int32_t> properties;
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};
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class Parser {
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public:
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Parser(std::string_view data, uint32_t lod) : m_Data(data), m_Lod(lod) {}
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std::optional<NifFile::Model> Run(std::string& error) {
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if (!ReadHeader(error)) return std::nullopt;
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m_Model.version = m_Version;
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// The footer lists the roots; the first block is the root when it can't be read
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std::vector<int32_t> roots;
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Reader footer(m_Data.substr(m_FooterStart));
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const auto count = footer.U32();
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if (footer.Ok() && count <= m_Blocks.size()) roots = footer.Array<int32_t>(count);
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if (roots.empty() && !m_Blocks.empty()) roots.push_back(0);
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for (const auto root : roots) Visit(root, Transform{}, Properties{}, 0);
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for (size_t i = 0; i < m_Blocks.size(); i++) {
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if (!m_Used.contains(static_cast<int32_t>(i))) {
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const auto& type = m_Types[m_Blocks[i].type];
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if (!IsDrawnType(type)) m_Model.skipped[type]++;
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}
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}
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bool first = true;
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for (const auto& mesh : m_Model.meshes) {
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for (size_t i = 0; i + 2 < mesh.positions.size(); i += 3) {
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for (int axis = 0; axis < 3; axis++) {
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const auto value = mesh.positions[i + axis];
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m_Model.min[axis] = first ? value : std::min(m_Model.min[axis], value);
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m_Model.max[axis] = first ? value : std::max(m_Model.max[axis], value);
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}
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first = false;
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}
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}
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return std::move(m_Model);
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}
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// The DDS file for pixel data block `index` (see NifFile::EmbeddedTexture)
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std::optional<std::string> Dds(int32_t index, std::string& error) {
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if (!ReadHeader(error)) return std::nullopt;
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const auto* type = TypeOf(index);
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if (!type || (*type != "NiPixelData" && *type != "NiPersistentSrcTextureRendererData")) return std::nullopt;
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auto reader = BlockReader(index);
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const auto format = reader.U32();
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reader.U8(); // bits per pixel
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reader.U32(); // renderer hint
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reader.U32(); // extra data
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reader.U8(); // flags
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const auto tiling = reader.U32();
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if (m_Version >= Version(20, 3, 0, 4)) reader.U8(); // sRGB
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reader.Skip(4 * 10); // channels
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reader.I32(); // palette
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const auto mipCount = reader.U32();
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const auto bytesPerPixel = reader.U32();
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if (!reader.Ok() || mipCount == 0 || mipCount > 16 || tiling != 0) return std::nullopt;
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std::vector<std::array<uint32_t, 3>> mips; // width, height, offset
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for (uint32_t i = 0; i < mipCount; i++) mips.push_back({ reader.U32(), reader.U32(), reader.U32() });
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const auto pixelCount = reader.U32();
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if (*type == "NiPersistentSrcTextureRendererData") {
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reader.U32(); // padded pixel count
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reader.U32(); // faces
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reader.U32(); // platform
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} else {
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reader.U32(); // faces
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}
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std::string_view pixels;
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if (reader.Ok() && pixelCount <= m_Blocks[index].size - reader.Position()) pixels = m_Data.substr(m_Blocks[index].offset + reader.Position(), pixelCount);
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const auto width = mips[0][0], height = mips[0][1];
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if (pixels.empty() || width == 0 || height == 0 || width > 8192 || height > 8192 || mips[0][2] != 0) return std::nullopt;
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// DDS header (Microsoft's DDS_HEADER and DDS_PIXELFORMAT)
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std::array<uint32_t, 31> header{};
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header[0] = 124;
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header[1] = 0x1 | 0x2 | 0x4 | 0x1000 | 0x20000; // caps, height, width, pixel format, mipmap count
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header[2] = height;
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header[3] = width;
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header[6] = mipCount;
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header[18] = 32; // pixel format size
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if (format >= 4 && format <= 6) {
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header[19] = 0x4; // four CC
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const char* fourCc = format == 4 ? "DXT1" : format == 5 ? "DXT3" : "DXT5";
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std::memcpy(&header[20], fourCc, 4);
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} else if ((format == 0 && bytesPerPixel == 3) || (format == 1 && bytesPerPixel == 4)) {
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header[19] = format == 1 ? 0x41 : 0x40; // RGB, with alpha
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header[21] = bytesPerPixel * 8;
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header[22] = 0x000000FF; // red first in memory
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header[23] = 0x0000FF00;
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header[24] = 0x00FF0000;
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header[25] = format == 1 ? 0xFF000000 : 0;
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} else {
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return std::nullopt;
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}
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header[26] = 0x1000 | (mipCount > 1 ? 0x400008 : 0); // texture, mipmaps
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std::string out = "DDS ";
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out.append(reinterpret_cast<const char*>(header.data()), header.size() * 4);
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out.append(pixels);
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return out;
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}
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private:
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struct Block {
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uint16_t type{};
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size_t offset{};
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uint32_t size{};
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};
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std::string_view m_Data;
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uint32_t m_Lod;
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uint32_t m_Version{};
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std::vector<std::string> m_Types;
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std::vector<std::string> m_Strings;
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std::vector<Block> m_Blocks;
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size_t m_FooterStart{};
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std::set<int32_t> m_Used;
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std::set<int32_t> m_Visiting;
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NifFile::Model m_Model;
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static bool IsDrawnType(const std::string& type) {
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return type == "NiNode" || type == "NiLODNode" || type == "NiBillboardNode" || type == "NiSwitchNode" ||
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type == "NiTriShape" || type == "NiTriStrips" || type == "NiTriShapeData" || type == "NiTriStripsData" ||
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type == "NiMaterialProperty" || type == "NiAlphaProperty" || type == "NiTexturingProperty" || type == "NiSourceTexture" ||
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type == "NiVertexColorProperty" || type == "NiStencilProperty" || type == "NiRangeLODData" ||
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// Read and ignored: they change nothing a still picture shows
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type == "NiSpecularProperty" || type == "NiZBufferProperty" || type == "NiShadeProperty" || type == "NiStringExtraData";
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}
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bool ReadHeader(std::string& error) {
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const auto newline = m_Data.substr(0, 128).find('\n');
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if (newline == std::string_view::npos || !(m_Data.starts_with("Gamebryo File Format") || m_Data.starts_with("NetImmerse File Format"))) {
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error = "not a Gamebryo file";
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return false;
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}
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Reader header(m_Data.substr(newline + 1));
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m_Version = header.U32();
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if (m_Version < MIN_VERSION || m_Version > MAX_VERSION) {
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error = "unsupported version";
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return false;
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}
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const auto endian = header.U8();
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const auto userVersion = header.U32();
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const auto blockCount = header.U32();
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if (!header.Ok() || endian != 1 || userVersion != 0 || blockCount > MAX_BLOCKS) {
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error = "unsupported header (big-endian or another game's user version)";
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return false;
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}
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const auto typeCount = header.U16();
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for (uint32_t i = 0; i < typeCount && header.Ok(); i++) m_Types.push_back(header.SizedString());
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const auto typeIndex = header.Array<uint16_t>(blockCount);
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const auto sizes = header.Array<uint32_t>(blockCount);
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const auto stringCount = header.U32();
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header.U32(); // longest string
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for (uint32_t i = 0; i < stringCount && header.Ok(); i++) m_Strings.push_back(header.SizedString());
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const auto groupCount = header.U32();
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header.Skip(static_cast<uint64_t>(groupCount) * 4);
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if (!header.Ok()) {
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error = "truncated header";
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return false;
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}
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size_t offset = newline + 1 + header.Position();
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m_Blocks.reserve(blockCount);
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for (uint32_t i = 0; i < blockCount; i++) {
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const uint16_t type = typeIndex[i] & 0x7FFF; // the high bit marks PhysX blocks
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if (type >= m_Types.size() || sizes[i] > m_Data.size() - offset) {
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error = "block " + std::to_string(i) + " is out of range";
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return false;
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}
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m_Blocks.push_back({ type, offset, sizes[i] });
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offset += sizes[i];
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}
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m_FooterStart = offset;
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return true;
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}
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const std::string* TypeOf(int32_t index) const {
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if (index < 0 || static_cast<size_t>(index) >= m_Blocks.size()) return nullptr;
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return &m_Types[m_Blocks[index].type];
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}
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Reader BlockReader(int32_t index) const {
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const auto& block = m_Blocks[index];
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return Reader(m_Data.substr(block.offset, block.size));
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}
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std::string String(uint32_t index) const {
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return index < m_Strings.size() ? m_Strings[index] : std::string{};
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}
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NetHeader ReadNet(Reader& reader) {
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NetHeader net;
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net.name = String(reader.U32());
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const auto extra = reader.U32();
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reader.Skip(static_cast<uint64_t>(extra) * 4);
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reader.I32(); // controller
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return net;
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}
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AvHeader ReadAv(Reader& reader) {
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AvHeader av;
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av.name = ReadNet(reader).name;
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av.flags = reader.U16();
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for (auto& value : av.transform.t) value = reader.Float();
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// Matrix33 is stored m11, m21, m31, m12, ... (nif.xml): column by column
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std::array<float, 9> stored{};
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for (auto& value : stored) value = reader.Float();
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for (int row = 0; row < 3; row++) {
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for (int col = 0; col < 3; col++) av.transform.r[row * 3 + col] = stored[col * 3 + row];
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}
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av.transform.s = reader.Float();
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const auto count = reader.U32();
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av.properties = reader.Array<int32_t>(count);
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reader.I32(); // collision object
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return av;
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}
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Properties Inherit(Properties properties, const std::vector<int32_t>& own) {
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for (const auto ref : own) {
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const auto* type = TypeOf(ref);
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if (!type) continue;
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if (*type == "NiMaterialProperty") properties.material = ref;
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else if (*type == "NiAlphaProperty") properties.alpha = ref;
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else if (*type == "NiTexturingProperty") properties.texturing = ref;
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else if (*type == "NiVertexColorProperty") properties.vertexColor = ref;
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else if (*type == "NiStencilProperty") properties.stencil = ref;
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m_Used.insert(ref);
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}
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return properties;
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}
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void Visit(int32_t index, const Transform& parent, Properties properties, uint32_t depth) {
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const auto* type = TypeOf(index);
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if (!type || depth > MAX_DEPTH || m_Visiting.contains(index)) return;
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m_Visiting.insert(index);
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if (*type == "NiNode" || *type == "NiLODNode" || *type == "NiBillboardNode" || *type == "NiSwitchNode") {
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m_Used.insert(index);
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VisitNode(index, *type, parent, properties, depth);
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} else if (*type == "NiTriShape" || *type == "NiTriStrips") {
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m_Used.insert(index);
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VisitGeometry(index, parent, properties);
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}
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m_Visiting.erase(index);
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}
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void VisitNode(int32_t index, const std::string& type, const Transform& parent, Properties properties, uint32_t depth) {
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auto reader = BlockReader(index);
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const auto av = ReadAv(reader);
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const auto childCount = reader.U32();
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const auto children = reader.Array<int32_t>(childCount);
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const auto effectCount = reader.U32();
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reader.Skip(static_cast<uint64_t>(effectCount) * 4);
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if (!reader.Ok()) return;
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const auto world = parent.Then(av.transform);
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// Recorded even when hidden: attach points often are
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if (!av.name.empty() && !m_Model.nodes.contains(av.name)) {
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NifFile::NodeTransform node;
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for (int i = 0; i < 9; i++) node.rotation[i] = world.r[i] * world.s;
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node.translation = world.t;
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m_Model.nodes.emplace(av.name, node);
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}
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if (av.flags & APP_CULLED) return;
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properties = Inherit(properties, av.properties);
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if (const auto tag = NifFile::ShaderTag(av.name); tag >= 0) properties.shaderTag = tag;
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std::vector<int32_t> drawn = children;
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if (type == "NiSwitchNode" || type == "NiLODNode") {
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reader.U16(); // switch flags
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const auto active = reader.U32();
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drawn.clear();
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if (type == "NiSwitchNode") {
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if (reader.Ok() && active < children.size()) drawn.push_back(children[active]);
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} else if (const auto chosen = ChooseLod(reader.I32(), children)) {
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drawn.push_back(*chosen);
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}
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}
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for (const auto child : drawn) Visit(child, world, properties, depth + 1);
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}
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// The child of an NiLODNode for m_Lod: children ordered nearest range first (the most detailed)
|
|
std::optional<int32_t> ChooseLod(int32_t dataRef, const std::vector<int32_t>& children) {
|
|
if (children.empty()) return std::nullopt;
|
|
std::vector<std::pair<float, int32_t>> order;
|
|
const auto* dataType = TypeOf(dataRef);
|
|
if (dataType && *dataType == "NiRangeLODData") {
|
|
m_Used.insert(dataRef);
|
|
auto data = BlockReader(dataRef);
|
|
data.Skip(12); // center
|
|
const auto levels = data.U32();
|
|
for (uint32_t i = 0; i < levels && data.Ok() && i < children.size(); i++) {
|
|
const auto nearExtent = data.Float();
|
|
data.Float(); // far extent
|
|
if (data.Ok()) order.emplace_back(nearExtent, children[i]);
|
|
}
|
|
}
|
|
if (order.size() != children.size()) {
|
|
order.clear();
|
|
for (size_t i = 0; i < children.size(); i++) order.emplace_back(static_cast<float>(i), children[i]);
|
|
}
|
|
std::stable_sort(order.begin(), order.end(), [](const auto& a, const auto& b) { return a.first < b.first; });
|
|
return order[std::min<size_t>(m_Lod, order.size() - 1)].second;
|
|
}
|
|
|
|
void VisitGeometry(int32_t index, const Transform& parent, Properties properties) {
|
|
auto reader = BlockReader(index);
|
|
const auto av = ReadAv(reader);
|
|
const auto dataRef = reader.I32();
|
|
const auto skin = reader.I32();
|
|
if (!reader.Ok() || (av.flags & APP_CULLED)) return;
|
|
properties = Inherit(properties, av.properties);
|
|
if (const auto tag = NifFile::ShaderTag(av.name); tag >= 0) properties.shaderTag = tag;
|
|
const auto* dataType = TypeOf(dataRef);
|
|
if (!dataType || (*dataType != "NiTriShapeData" && *dataType != "NiTriStripsData")) return;
|
|
m_Used.insert(dataRef);
|
|
|
|
NifFile::Mesh mesh;
|
|
if (!ReadGeometryData(dataRef, *dataType == "NiTriStripsData", parent.Then(av.transform), mesh) || mesh.indices.empty()) return;
|
|
mesh.material = ReadMaterial(properties);
|
|
mesh.material.shaderTag = properties.shaderTag;
|
|
if (skin >= 0) {
|
|
m_Model.skinned++;
|
|
m_Used.insert(skin);
|
|
}
|
|
m_Model.meshes.push_back(std::move(mesh));
|
|
}
|
|
|
|
bool ReadGeometryData(int32_t index, bool strips, const Transform& transform, NifFile::Mesh& mesh) {
|
|
auto reader = BlockReader(index);
|
|
reader.I32(); // group ID
|
|
const auto count = reader.U16();
|
|
reader.U8(); // keep flags
|
|
reader.U8(); // compress flags
|
|
if (reader.U8()) {
|
|
const auto vertices = reader.Array<float>(static_cast<uint64_t>(count) * 3);
|
|
mesh.positions.reserve(vertices.size());
|
|
for (size_t i = 0; i + 2 < vertices.size(); i += 3) {
|
|
const auto p = transform.Apply({ vertices[i], vertices[i + 1], vertices[i + 2] });
|
|
mesh.positions.insert(mesh.positions.end(), p.begin(), p.end());
|
|
}
|
|
}
|
|
const auto dataFlags = reader.U16();
|
|
if (reader.U8()) {
|
|
const auto normals = reader.Array<float>(static_cast<uint64_t>(count) * 3);
|
|
mesh.normals.reserve(normals.size());
|
|
for (size_t i = 0; i + 2 < normals.size(); i += 3) {
|
|
auto n = transform.Rotate({ normals[i], normals[i + 1], normals[i + 2] });
|
|
const auto length = std::sqrt(n[0] * n[0] + n[1] * n[1] + n[2] * n[2]);
|
|
if (length > 0.0f) for (auto& value : n) value /= length;
|
|
mesh.normals.insert(mesh.normals.end(), n.begin(), n.end());
|
|
}
|
|
if (dataFlags & 4096) reader.Skip(static_cast<uint64_t>(count) * 24); // tangents and bitangents
|
|
}
|
|
reader.Skip(16); // bounding sphere
|
|
if (reader.U8()) {
|
|
const auto colors = reader.Array<float>(static_cast<uint64_t>(count) * 4);
|
|
mesh.colors.reserve(colors.size());
|
|
for (const auto value : colors) mesh.colors.push_back(static_cast<uint8_t>(std::lround(std::clamp(value, 0.0f, 1.0f) * 255.0f)));
|
|
}
|
|
const auto uvSets = dataFlags & 63;
|
|
if (uvSets > 0) {
|
|
mesh.uvs = reader.Array<float>(static_cast<uint64_t>(count) * 2);
|
|
reader.Skip(static_cast<uint64_t>(uvSets - 1) * count * 8);
|
|
}
|
|
reader.U16(); // consistency flags
|
|
reader.I32(); // additional data
|
|
const auto triangles = reader.U16();
|
|
if (!strips) {
|
|
reader.U32(); // triangle points
|
|
if (reader.U8()) mesh.indices = reader.Array<uint16_t>(static_cast<uint64_t>(triangles) * 3);
|
|
} else {
|
|
const auto stripCount = reader.U16();
|
|
const auto lengths = reader.Array<uint16_t>(stripCount);
|
|
if (reader.U8()) {
|
|
for (const auto length : lengths) {
|
|
const auto points = reader.Array<uint16_t>(length);
|
|
for (size_t i = 2; i < points.size(); i++) {
|
|
const auto a = points[i - 2], b = points[i - 1], c = points[i];
|
|
if (a == b || b == c || a == c) continue;
|
|
if (i % 2 == 0) mesh.indices.insert(mesh.indices.end(), { a, b, c });
|
|
else mesh.indices.insert(mesh.indices.end(), { a, c, b });
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!reader.Ok() || mesh.positions.size() != static_cast<size_t>(count) * 3) return false;
|
|
if (mesh.normals.size() != mesh.positions.size()) mesh.normals.clear();
|
|
if (mesh.colors.size() != static_cast<size_t>(count) * 4) mesh.colors.clear();
|
|
if (mesh.uvs.size() != static_cast<size_t>(count) * 2) mesh.uvs.clear();
|
|
// Drop triangles pointing past the vertices
|
|
std::vector<uint16_t> valid;
|
|
valid.reserve(mesh.indices.size());
|
|
for (size_t i = 0; i + 2 < mesh.indices.size(); i += 3) {
|
|
if (mesh.indices[i] < count && mesh.indices[i + 1] < count && mesh.indices[i + 2] < count) {
|
|
valid.insert(valid.end(), { mesh.indices[i], mesh.indices[i + 1], mesh.indices[i + 2] });
|
|
}
|
|
}
|
|
mesh.indices = std::move(valid);
|
|
return true;
|
|
}
|
|
|
|
NifFile::Material ReadMaterial(const Properties& properties) {
|
|
NifFile::Material material;
|
|
if (properties.material >= 0) {
|
|
auto reader = BlockReader(properties.material);
|
|
ReadNet(reader);
|
|
reader.Skip(12); // ambient
|
|
std::array<float, 3> diffuse{}, emissive{};
|
|
for (auto& value : diffuse) value = reader.Float();
|
|
reader.Skip(12); // specular
|
|
for (auto& value : emissive) value = reader.Float();
|
|
reader.Float(); // glossiness
|
|
const auto alpha = reader.Float();
|
|
if (reader.Ok()) {
|
|
material.diffuse = diffuse;
|
|
material.emissive = emissive;
|
|
material.alpha = std::clamp(alpha, 0.0f, 1.0f);
|
|
}
|
|
}
|
|
if (properties.alpha >= 0) {
|
|
auto reader = BlockReader(properties.alpha);
|
|
ReadNet(reader);
|
|
const auto flags = reader.U16();
|
|
const auto threshold = reader.U8();
|
|
if (reader.Ok()) {
|
|
material.alphaBlend = flags & 1;
|
|
material.alphaTest = flags & 0x200;
|
|
material.alphaThreshold = threshold;
|
|
}
|
|
}
|
|
if (properties.vertexColor >= 0) {
|
|
auto reader = BlockReader(properties.vertexColor);
|
|
ReadNet(reader);
|
|
const auto flags = reader.U16();
|
|
if (reader.Ok()) material.vertexColorMode = static_cast<uint8_t>((flags >> 4) & 3);
|
|
}
|
|
if (properties.stencil >= 0) {
|
|
auto reader = BlockReader(properties.stencil);
|
|
ReadNet(reader);
|
|
const auto flags = reader.U16();
|
|
if (reader.Ok()) material.doubleSided = ((flags >> 10) & 3) == 3; // DRAW_BOTH
|
|
}
|
|
if (properties.texturing >= 0) {
|
|
auto reader = BlockReader(properties.texturing);
|
|
ReadNet(reader);
|
|
reader.U16(); // flags
|
|
reader.U32(); // texture count
|
|
if (reader.U8()) { // has base texture
|
|
const auto source = reader.I32();
|
|
const auto flags = reader.U16();
|
|
const auto* type = TypeOf(source);
|
|
if (reader.Ok() && type && *type == "NiSourceTexture") {
|
|
m_Used.insert(source);
|
|
auto texture = BlockReader(source);
|
|
ReadNet(texture);
|
|
const auto external = texture.U8();
|
|
const auto file = String(texture.U32());
|
|
const auto pixels = texture.I32();
|
|
const auto* pixelType = TypeOf(pixels);
|
|
if (texture.Ok() && external == 1) material.texture = file;
|
|
else if (texture.Ok() && pixelType && (*pixelType == "NiPixelData" || *pixelType == "NiPersistentSrcTextureRendererData")) {
|
|
material.embeddedTexture = pixels;
|
|
m_Used.insert(pixels);
|
|
}
|
|
const auto clamp = (flags >> 12) & 0xF;
|
|
material.clampU = clamp == 0 || clamp == 1;
|
|
material.clampV = clamp == 0 || clamp == 2;
|
|
}
|
|
}
|
|
}
|
|
return material;
|
|
}
|
|
};
|
|
|
|
void Append(std::string& out, const void* data, size_t bytes) {
|
|
out.append(static_cast<const char*>(data), bytes);
|
|
}
|
|
|
|
void Pad(std::string& out) {
|
|
while (out.size() % 4) out.push_back('\0');
|
|
}
|
|
|
|
nlohmann::json Color(const std::array<float, 3>& color) {
|
|
return { std::round(color[0] * 1000.0f) / 1000.0f, std::round(color[1] * 1000.0f) / 1000.0f, std::round(color[2] * 1000.0f) / 1000.0f };
|
|
}
|
|
}
|
|
|
|
namespace NifFile {
|
|
int32_t ShaderTag(std::string_view name) {
|
|
// The client reads the tag with sscanf: "S%d" at the start of the name, else "_S%d" after the first "_S"
|
|
const auto number = [](std::string_view digits) -> int32_t {
|
|
size_t i = 0;
|
|
while (i < digits.size() && (digits[i] == ' ' || digits[i] == '\t')) i++;
|
|
// A signed number names no mapShaders row, like no number at all
|
|
if (i >= digits.size() || digits[i] < '0' || digits[i] > '9') return -1;
|
|
int32_t value = 0;
|
|
for (; i < digits.size() && digits[i] >= '0' && digits[i] <= '9' && value < 100000; i++) value = value * 10 + (digits[i] - '0');
|
|
return value;
|
|
};
|
|
if (name.starts_with('S')) {
|
|
const auto tag = number(name.substr(1));
|
|
if (tag >= 0) return tag;
|
|
}
|
|
const auto at = name.find("_S");
|
|
if (at == std::string_view::npos || at + 3 >= name.size()) return -1;
|
|
return number(name.substr(at + 2));
|
|
}
|
|
|
|
int32_t MultishaderPart(std::optional<int32_t> tagShader) {
|
|
return tagShader && *tagShader >= 3 && *tagShader <= 0x6C ? *tagShader : LEGO_SHADER;
|
|
}
|
|
|
|
eTextureAlpha TextureAlphaFor(int32_t shader) {
|
|
switch (shader) {
|
|
// LEGOPPLighting: textured alone the texture's alpha is forced to 1; with vertex colors it only lays the
|
|
// texture over them (lerp by its alpha) and the vertex alpha is what shows through
|
|
case 4: case 5: case 12: case 25: case 27: case 28: case 29: case 30: case 50: case 72: case 88:
|
|
// Darkling: the same lay-over; alpha from lighting or the fade
|
|
case 75: case 76: case 77: case 102: case 103: case 104:
|
|
return eTextureAlpha::DECAL;
|
|
// LEGOPPLighting_Item: texture alpha forced to 1, multiplied by the vertex colors
|
|
case 31: case 48:
|
|
// TerrainMeshLighting_Rim: texture times vertex colors, alpha only the fade
|
|
case 3:
|
|
return eTextureAlpha::IGNORED;
|
|
default:
|
|
return eTextureAlpha::OPACITY;
|
|
}
|
|
}
|
|
|
|
uint8_t ShaderLookFor(int32_t shader) {
|
|
// By the techniques of each mapShaders row (its label names them: "NL" no lighting, "NT" no texture, "VC"
|
|
// vertex colors), e.g. 38 "Basic VC" is Technique_Basic_Lighting_VertColor, 33 "Basic NL VC NT"
|
|
// Technique_Basic_NoLighting_VertColor_NoTexture, 32 "Basic NL Material" Technique_Basic_Material_NoLighting
|
|
switch (shader) {
|
|
// Basic NL Material, Over Everything Material Unlit
|
|
case 32: case 108:
|
|
return UNLIT | NO_VERTEX_COLORS | MATERIAL_COLOR;
|
|
// Basic NL, Basic NL UVAnim, OneSidedAlpha NL (and skinned), Opaque NL NoFog
|
|
case 34: case 36: case 56: case 61: case 83:
|
|
return UNLIT | NO_VERTEX_COLORS;
|
|
// Basic, the lit one without vertex colors
|
|
case 94:
|
|
return NO_VERTEX_COLORS;
|
|
// VertColor_NoLight_NoTex_AnimAlpha, VC_NL_NoTex_2D, Basic NL VC NT, OneSidedAlpha NL VC NT (and skinned),
|
|
// Basic NL NT, Opaque NL VC NT NoFog
|
|
case 11: case 16: case 33: case 58: case 63: case 80: case 82:
|
|
return UNLIT | NO_TEXTURE;
|
|
// Basic VC NT, Opaque VC NT NoFog
|
|
case 37: case 85:
|
|
return NO_TEXTURE;
|
|
// VertColor_NoLighting_Alpha, VertColorTex_NoLight_AlphaBlend and _AlphaTest, VC_NoLighting_2D, Over
|
|
// Everything (Unlit), Basic NL VC, LEGO-No Light, OneSidedAlpha NL VC (and skinned), OneSidedAlpha NL
|
|
// AnimAlpha, the NoLight scrolling UVs, Opaque NL VC NoFog, Additive NoLight VertColor, Two Textures Added NL
|
|
// VC AnimUV, Distortion (Ocean) Unlit, Two Layers Blended NL VC AnimUV
|
|
case 8: case 10: case 54: case 15: case 23: case 35: case 52: case 57: case 62: case 68: case 70: case 73: case 81:
|
|
case 84: case 87: case 93: case 101: case 105:
|
|
return UNLIT;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
std::optional<Model> Parse(std::string_view data, uint32_t lod, std::string& error) {
|
|
return Parser(data, lod).Run(error);
|
|
}
|
|
|
|
std::optional<std::string> EmbeddedTexture(std::string_view data, int32_t block) {
|
|
std::string error;
|
|
return Parser(data, 0).Dds(block, error);
|
|
}
|
|
|
|
std::string Encode(const Model& model, const std::vector<std::string>& textures) {
|
|
std::string body;
|
|
nlohmann::json meshes = nlohmann::json::array();
|
|
std::vector<std::string> names;
|
|
for (size_t m = 0; m < model.meshes.size(); m++) {
|
|
const auto& mesh = model.meshes[m];
|
|
const auto& material = mesh.material;
|
|
const auto vertices = mesh.positions.size() / 3;
|
|
const std::string texture = m < textures.size() ? textures[m] : std::string{};
|
|
int32_t textureIndex = -1;
|
|
if (!texture.empty()) {
|
|
const auto it = std::find(names.begin(), names.end(), texture);
|
|
textureIndex = static_cast<int32_t>(it - names.begin());
|
|
if (it == names.end()) names.push_back(texture);
|
|
}
|
|
nlohmann::json entry{
|
|
{"offset", body.size()}, {"vertices", vertices}, {"indices", mesh.indices.size()},
|
|
{"normals", !mesh.normals.empty()}, {"uv", !mesh.uvs.empty() && textureIndex >= 0}, {"colors", !mesh.colors.empty()},
|
|
{"diffuse", Color(material.diffuse)}, {"emissive", Color(material.emissive)}, {"alpha", std::round(material.alpha * 1000.0f) / 1000.0f},
|
|
{"blend", material.alphaBlend}, {"test", material.alphaTest ? material.alphaThreshold : -1}, {"doubleSided", material.doubleSided},
|
|
{"vertexColors", material.vertexColorMode}, {"texture", textureIndex}, {"clampU", material.clampU}, {"clampV", material.clampV},
|
|
{"shaderTag", material.shaderTag}
|
|
};
|
|
Append(body, mesh.positions.data(), mesh.positions.size() * sizeof(float));
|
|
if (!mesh.normals.empty()) {
|
|
std::vector<int8_t> packed(mesh.normals.size());
|
|
for (size_t i = 0; i < packed.size(); i++) packed[i] = static_cast<int8_t>(std::lround(std::clamp(mesh.normals[i], -1.0f, 1.0f) * 127.0f));
|
|
Append(body, packed.data(), packed.size());
|
|
Pad(body);
|
|
}
|
|
if (entry["uv"].get<bool>()) Append(body, mesh.uvs.data(), mesh.uvs.size() * sizeof(float));
|
|
if (!mesh.colors.empty()) Append(body, mesh.colors.data(), mesh.colors.size());
|
|
Append(body, mesh.indices.data(), mesh.indices.size() * sizeof(uint16_t));
|
|
Pad(body);
|
|
meshes.push_back(std::move(entry));
|
|
}
|
|
nlohmann::json header{
|
|
{"version", 1}, {"meshes", meshes}, {"textures", names},
|
|
{"min", { model.min[0], model.min[1], model.min[2] }}, {"max", { model.max[0], model.max[1], model.max[2] }}
|
|
};
|
|
auto text = header.dump();
|
|
while (text.size() % 4) text.push_back(' ');
|
|
std::string out;
|
|
const auto length = static_cast<uint32_t>(text.size());
|
|
Append(out, &length, sizeof(length));
|
|
out += text;
|
|
out += body;
|
|
return out;
|
|
}
|
|
|
|
std::optional<std::string> KfmModelPath(std::string_view data) {
|
|
const auto newline = data.substr(0, 128).find('\n');
|
|
if (newline == std::string_view::npos || data.substr(0, newline).find("KFM") == std::string_view::npos) return std::nullopt;
|
|
Reader reader(data.substr(newline + 1));
|
|
reader.U8(); // little endian
|
|
auto path = reader.SizedString();
|
|
if (!reader.Ok() || path.empty()) return std::nullopt;
|
|
return path;
|
|
}
|
|
}
|