header.hpp

#pragma once
 
#include "enums.hpp"
#include <array>
#include <cstddef>
#include <cstdint>
 
namespace VtfParser {
#pragma pack(push, 1)
 
  struct HeaderBase {
    std::array<uint8_t, 4> signature;
    std::array<uint32_t, 2> version;
    uint32_t headerSize;
  };
 
  struct __attribute__((aligned(16))) HeaderFullAligned : public HeaderBase {
    uint16_t width;
    uint16_t height;
    TextureFlags flags;
    uint16_t frames;
    uint16_t firstFrame;
    std::array<uint8_t, 4> padding0;
    std::array<float, 3> reflectivity;
    std::array<uint8_t, 4> padding1;
    float bumpmapScale;
    ImageFormat highResImageFormat;
    uint8_t mipmapCount;
    ImageFormat lowResImageFormat;
    uint8_t lowResImageWidth;
    uint8_t lowResImageHeight;
    uint16_t depth;
    std::array<uint8_t, 3> padding2;
    uint32_t numResources;
  };
 
  struct ResourceEntryInfo {
    std::array<uint8_t, 3> tag;
    uint8_t flags;
    uint32_t data;
  };
 
  struct Header : public HeaderFullAligned {
    static constexpr size_t MAX_RESOURCES = 32;
 
    std::array<uint8_t, 8> padding3;
    std::array<ResourceEntryInfo, MAX_RESOURCES> resourceInfos;
  };
 
#pragma pack(pop)
}