lovr/src/modules/data/textureData.h

#include "data/blob.h"
#include "util.h"
#include "lib/vec/vec.h"
#include <stdint.h>
#include <stdbool.h>

#pragma once

typedef enum {
  FORMAT_RGB,
  FORMAT_RGBA,
  FORMAT_RGBA4,
  FORMAT_RGBA16F,
  FORMAT_RGBA32F,
  FORMAT_R16F,
  FORMAT_R32F,
  FORMAT_RG16F,
  FORMAT_RG32F,
  FORMAT_RGB5A1,
  FORMAT_RGB10A2,
  FORMAT_RG11B10F,
  FORMAT_D16,
  FORMAT_D32F,
  FORMAT_D24S8,
  FORMAT_DXT1,
  FORMAT_DXT3,
  FORMAT_DXT5
} TextureFormat;

typedef struct {
  uint32_t width;
  uint32_t height;
  size_t size;
  void* data;
} Mipmap;

typedef vec_t(Mipmap) vec_mipmap_t;

typedef struct TextureData {
  Blob blob;
  uint32_t width;
  uint32_t height;
  Blob* source;
  TextureFormat format;
  vec_mipmap_t mipmaps;
} TextureData;

TextureData* lovrTextureDataInit(TextureData* textureData, uint32_t width, uint32_t height, uint8_t value, TextureFormat format);
TextureData* lovrTextureDataInitFromBlob(TextureData* textureData, Blob* blob, bool flip);
#define lovrTextureDataCreate(...) lovrTextureDataInit(lovrAlloc(TextureData), __VA_ARGS__)
#define lovrTextureDataCreateFromBlob(...) lovrTextureDataInitFromBlob(lovrAlloc(TextureData), __VA_ARGS__)
Color lovrTextureDataGetPixel(TextureData* textureData, uint32_t x, uint32_t y);
void lovrTextureDataSetPixel(TextureData* textureData, uint32_t x, uint32_t y, Color color);
bool lovrTextureDataEncode(TextureData* textureData, const char* filename);
void lovrTextureDataDestroy(void* ref);

// DDS structs (modified from ddsparse <https://bitbucket.org/slime73/ddsparse>)

typedef enum DDPF {
  DDPF_ALPHAPIXELS = 0x000001,
  DDPF_ALPHA       = 0x000002,
  DDPF_FOURCC      = 0x000004,
  DDPF_RGB         = 0x000040,
  DDPF_YUV         = 0x000200,
  DDPF_LUMINANCE   = 0x020000
} DDPF;

typedef enum D3D10ResourceDimension {
  D3D10_RESOURCE_DIMENSION_UNKNOWN   = 0,
  D3D10_RESOURCE_DIMENSION_BUFFER    = 1,
  D3D10_RESOURCE_DIMENSION_TEXTURE1D = 2,
  D3D10_RESOURCE_DIMENSION_TEXTURE2D = 3,
  D3D10_RESOURCE_DIMENSION_TEXTURE3D = 4
} D3D10ResourceDimension;

typedef enum DXGIFormat {
  DXGI_FORMAT_UNKNOWN                     = 0,

  DXGI_FORMAT_R32G32B32A32_TYPELESS       = 1,
  DXGI_FORMAT_R32G32B32A32_FLOAT          = 2,
  DXGI_FORMAT_R32G32B32A32_UINT           = 3,
  DXGI_FORMAT_R32G32B32A32_SINT           = 4,

  DXGI_FORMAT_R32G32B32_TYPELESS          = 5,
  DXGI_FORMAT_R32G32B32_FLOAT             = 6,
  DXGI_FORMAT_R32G32B32_UINT              = 7,
  DXGI_FORMAT_R32G32B32_SINT              = 8,

  DXGI_FORMAT_R16G16B16A16_TYPELESS       = 9,
  DXGI_FORMAT_R16G16B16A16_FLOAT          = 10,
  DXGI_FORMAT_R16G16B16A16_UNORM          = 11,
  DXGI_FORMAT_R16G16B16A16_UINT           = 12,
  DXGI_FORMAT_R16G16B16A16_SNORM          = 13,
  DXGI_FORMAT_R16G16B16A16_SINT           = 14,

  DXGI_FORMAT_R32G32_TYPELESS             = 15,
  DXGI_FORMAT_R32G32_FLOAT                = 16,
  DXGI_FORMAT_R32G32_UINT                 = 17,
  DXGI_FORMAT_R32G32_SINT                 = 18,

  DXGI_FORMAT_R32G8X24_TYPELESS           = 19,
  DXGI_FORMAT_D32_FLOAT_S8X24_UINT        = 20,
  DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS    = 21,
  DXGI_FORMAT_X32_TYPELESS_G8X24_UINT     = 22,

  DXGI_FORMAT_R10G10B10A2_TYPELESS        = 23,
  DXGI_FORMAT_R10G10B10A2_UNORM           = 24,
  DXGI_FORMAT_R10G10B10A2_UINT            = 25,

  DXGI_FORMAT_R11G11B10_FLOAT             = 26,

  DXGI_FORMAT_R8G8B8A8_TYPELESS           = 27,
  DXGI_FORMAT_R8G8B8A8_UNORM              = 28,
  DXGI_FORMAT_R8G8B8A8_UNORM_SRGB         = 29,
  DXGI_FORMAT_R8G8B8A8_UINT               = 30,
  DXGI_FORMAT_R8G8B8A8_SNORM              = 31,
  DXGI_FORMAT_R8G8B8A8_SINT               = 32,

  DXGI_FORMAT_R16G16_TYPELESS             = 33,
  DXGI_FORMAT_R16G16_FLOAT                = 34,
  DXGI_FORMAT_R16G16_UNORM                = 35,
  DXGI_FORMAT_R16G16_UINT                 = 36,
  DXGI_FORMAT_R16G16_SNORM                = 37,
  DXGI_FORMAT_R16G16_SINT                 = 38,

  DXGI_FORMAT_R32_TYPELESS                = 39,
  DXGI_FORMAT_D32_FLOAT                   = 40,
  DXGI_FORMAT_R32_FLOAT                   = 41,
  DXGI_FORMAT_R32_UINT                    = 42,
  DXGI_FORMAT_R32_SINT                    = 43,

  DXGI_FORMAT_R24G8_TYPELESS              = 44,
  DXGI_FORMAT_D24_UNORM_S8_UINT           = 45,
  DXGI_FORMAT_R24_UNORM_X8_TYPELESS       = 46,
  DXGI_FORMAT_X24_TYPELESS_G8_UINT        = 47,

  DXGI_FORMAT_R8G8_TYPELESS               = 48,
  DXGI_FORMAT_R8G8_UNORM                  = 49,
  DXGI_FORMAT_R8G8_UINT                   = 50,
  DXGI_FORMAT_R8G8_SNORM                  = 51,
  DXGI_FORMAT_R8G8_SINT                   = 52,

  DXGI_FORMAT_R16_TYPELESS                = 53,
  DXGI_FORMAT_R16_FLOAT                   = 54,
  DXGI_FORMAT_D16_UNORM                   = 55,
  DXGI_FORMAT_R16_UNORM                   = 56,
  DXGI_FORMAT_R16_UINT                    = 57,
  DXGI_FORMAT_R16_SNORM                   = 58,
  DXGI_FORMAT_R16_SINT                    = 59,

  DXGI_FORMAT_R8_TYPELESS                 = 60,
  DXGI_FORMAT_R8_UNORM                    = 61,
  DXGI_FORMAT_R8_UINT                     = 62,
  DXGI_FORMAT_R8_SNORM                    = 63,
  DXGI_FORMAT_R8_SINT                     = 64,
  DXGI_FORMAT_A8_UNORM                    = 65,

  DXGI_FORMAT_R1_UNORM                    = 66,

  DXGI_FORMAT_R9G9B9E5_SHAREDEXP          = 67,

  DXGI_FORMAT_R8G8_B8G8_UNORM             = 68,
  DXGI_FORMAT_G8R8_G8B8_UNORM             = 69,

  DXGI_FORMAT_BC1_TYPELESS                = 70,
  DXGI_FORMAT_BC1_UNORM                   = 71,
  DXGI_FORMAT_BC1_UNORM_SRGB              = 72,

  DXGI_FORMAT_BC2_TYPELESS                = 73,
  DXGI_FORMAT_BC2_UNORM                   = 74,
  DXGI_FORMAT_BC2_UNORM_SRGB              = 75,

  DXGI_FORMAT_BC3_TYPELESS                = 76,
  DXGI_FORMAT_BC3_UNORM                   = 77,
  DXGI_FORMAT_BC3_UNORM_SRGB              = 78,

  DXGI_FORMAT_BC4_TYPELESS                = 79,
  DXGI_FORMAT_BC4_UNORM                   = 80,
  DXGI_FORMAT_BC4_SNORM                   = 81,

  DXGI_FORMAT_BC5_TYPELESS                = 82,
  DXGI_FORMAT_BC5_UNORM                   = 83,
  DXGI_FORMAT_BC5_SNORM                   = 84,

  DXGI_FORMAT_B5G6R5_UNORM                = 85,
  DXGI_FORMAT_B5G5R5A1_UNORM              = 86,
  DXGI_FORMAT_B8G8R8A8_UNORM              = 87,
  DXGI_FORMAT_B8G8R8X8_UNORM              = 88,

  DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM  = 89,
  DXGI_FORMAT_B8G8R8A8_TYPELESS           = 90,
  DXGI_FORMAT_B8G8R8A8_UNORM_SRGB         = 91,
  DXGI_FORMAT_B8G8R8X8_TYPELESS           = 92,
  DXGI_FORMAT_B8G8R8X8_UNORM_SRGB         = 93,

  DXGI_FORMAT_BC6H_TYPELESS               = 94,
  DXGI_FORMAT_BC6H_UF16                   = 95,
  DXGI_FORMAT_BC6H_SF16                   = 96,

  DXGI_FORMAT_BC7_TYPELESS                = 97,
  DXGI_FORMAT_BC7_UNORM                   = 98,
  DXGI_FORMAT_BC7_UNORM_SRGB              = 99
} DXGIFormat;

typedef struct DDSPixelFormat {
  uint32_t size;
  uint32_t flags;
  uint32_t fourCC;
  uint32_t rgbBitCount;
  uint32_t rBitMask;
  uint32_t gBitMask;
  uint32_t bBitMask;
  uint32_t aBitMask;
} DDSPixelFormat;

typedef struct DDSHeader {
  uint32_t size;
  uint32_t flags;
  uint32_t height;
  uint32_t width;
  uint32_t pitchOrLinearSize;
  uint32_t depth;
  uint32_t mipMapCount;
  uint32_t reserved[11];

  DDSPixelFormat format;

  uint32_t caps1;
  uint32_t caps2;
  uint32_t caps3;
  uint32_t caps4;
  uint32_t reserved2;
} DDSHeader;

typedef struct DDSHeader10 {
  DXGIFormat dxgiFormat;
  D3D10ResourceDimension resourceDimension;

  uint32_t miscFlag;
  uint32_t arraySize;
  uint32_t reserved;
} DDSHeader10;

// KTX

typedef struct {
  uint8_t header[12];
  uint32_t endianness;
  uint32_t glType;
  uint32_t glTypeSize;
  uint32_t glFormat;
  uint32_t glInternalFormat;
  uint32_t glBaseInternalFormat;
  uint32_t pixelWidth;
  uint32_t pixelHeight;
  uint32_t pixelDepth;
  uint32_t numberOfArrayElements;
  uint32_t numberOfFaces;
  uint32_t numberOfMipmapLevels;
  uint32_t bytesOfKeyValueData;
} KTXHeader;