{.deadCodeElim: on.}

const
 endianRefRev* = 16909060 # 0x01020304 -> #define KTX_ENDIAN_REF_REV  (0x01020304)

type
 GlFormatSize* = ref object
  paletteSizeInBits*: uint 
  blockSizeInBits*: uint
  blockWidth*: uint# in texels
  blockHeight*: uint # in texels
  blockDepth*: uint # in texels
  flags*: uint

 #currently only uncommenting and adding to GlFormats and
 # aFormatSize when needed
 GlFormats* = enum
  # 8 bits per component
  #GL_RGB8         = 32849 #0x8051 # same as GL_RGB8_EXT and GL_RGB8_OES
  GL_RGBA8        = 32856 # same as GL_RGBA8_EXT and GL_RGBA8_OES
  # GL_R8           = 33321 #0x8229 # same as GL_R8_EXT
  # GL_RG8          = 33323 #0x822B # same as GL_RG8_EXT
  # GL_R8I          = 33329 #0x8231
  # GL_R8UI         = 33330 #0x8232
  # GL_RG8I         = 33335 #0x8237
  # GL_RG8UI        = 33336 #0x8238
  # GL_SRGB8        = 35905 #0x8C41 # same as GL_SRGB8_EXT
  # GL_SRGB8_ALPHA8 = 35907 #0x8C43 # same as GL_SRGB8_ALPHA8_EXT
  # GL_RGBA8UI      = 36220 #0x8D7C # same as GL_RGBA8UI_EXT
  # GL_RGB8UI       = 36221 #0x8D7D # same as GL_RGB8UI_EXT
  # GL_RGBA8I       = 36238 #0x8D8E # same as GL_RGBA8I_EXT
  # GL_RGB8I        = 36239 # 0x8D8F # same as GL_RGB8I_EXT
  # GL_R8_SNORM     = 36756 #0x8F94
  # GL_RG8_SNORM    = 36757 #0x8F95
  # GL_RGB8_SNORM   = 36758 #0x8F96
  # GL_RGBA8_SNORM  = 36759 # 0x8F97
  # GL_SR8          = 36797 #0x8FBD # same as GL_SR8_EXT
  # GL_SRG8         = 36798 #0x8FBE # same as GL_SRG8_EXT

 # # 16 bits per component
 #  GL_R16          = 0x822A # same as GL_R16_EXT
 #  GL_RG16         = 0x822C # same as GL_RG16_EXT
 #  GL_RGB16        = 0x8054 # same as GL_RGB16_EXT
 #  GL_RGBA16       = 0x805B # same as GL_RGBA16_EXT
 #  GL_R16_SNORM    = 0x8F98 # same as GL_R16_SNORM_EXT
 #  GL_RG16_SNORM   = 0x8F99 # same as GL_RG16_SNORM_EXT
 #  GL_RGB16_SNORM  = 0x8F9A # same as GL_RGB16_SNORM_EXT
 #  GL_RGBA16_SNORM = 0x8F9B # same as GL_RGBA16_SNORM_EXT
 #  GL_R16UI        = 0x8234
 #  GL_RG16UI       = 0x823A
 #  GL_RGB16UI      = 0x8D77 # same as GL_RGB16UI_EXT
 #  GL_RGBA16UI     = 0x8D76 # same as GL_RGBA16UI_EXT
 #  GL_R16I         = 0x8233
 #  GL_RG16I        = 0x8239
 #  GL_RGB16I       = 0x8D89 # same as GL_RGB16I_EXT
 #  GL_RGBA16I      = 0x8D88 # same as GL_RGBA16I_EXT
 #  GL_R16F         = 0x822D # same as GL_R16F_EXT
 #  GL_RG16F        = 0x822F # same as GL_RG16F_EXT
 #  GL_RGB16F       = 0x881B # same as GL_RGB16F_EXT and GL_RGB16F_ARB
 #  GL_RGBA16F      = 0x881A # sama as GL_RGBA16F_EXT and GL_RGBA16F_ARB

 # # 32 bits per component
 #  GL_R32UI    = 0x8236
 #  GL_RG32UI   = 0x823C
 #  GL_RGB32UI  = 0x8D71 # same as GL_RGB32UI_EXT
 #  GL_RGBA32UI = 0x8D70 # same as GL_RGBA32UI_EXT
 #  GL_R32I     = 0x8235
 #  GL_RG32I    = 0x823B
 #  GL_RGB32I   = 0x8D83 # same as GL_RGB32I_EXT 
 #  GL_RGBA32I  = 0x8D82 # same as GL_RGBA32I_EXT
 #  GL_R32F8    = 0x822E # same as GL_R32F_EXT
 #  GL_RG32F    = 0x8230 # same as GL_RG32F_EXT
 #  GL_RGB32F   = 0x8815 # same as GL_RGB32F_EXT and GL_RGB32F_ARB
 #  GL_RGBA32F  = 0x8814 # same as GL_RGBA32F_EXT and GL_RGBA32F_ARB

 # # Packed
 #  GL_R3_G3_B2       = 0x2A10
 #  GL_RGB4           = 0x804F # same as GL_RGB4_EXT
 #  GL_RGB5           = 0x8050 # same as GL_RGB5_EXT
 #  GL_RGB565         = 0x8D62 # same as GL_RGB565_EXT and GL_RGB565_OES
 #  GL_RGB10          = 0x8052 # same as GL_RGB10_EXT
 #  GL_RGB12          = 0x8053 # same as GL_RGB12_EXT
 #  GL_RGBA2          = 0x8055 # same as GL_RGBA2_EXT
 #  GL_RGBA4          = 0x8056 # same as GL_RGBA4_EXT and GL_RGBA4_OES
 #  GL_RGBA12         = 0x805A # same as GL_RGBA12_EXT
 #  GL_RGB5_A1        = 0x8057 # same as GL_RGB5_A1_EXT and GL_RGB5_A1_OES
 #  GL_RGB10_A2       = 0x8059 # same as GL_RGB10_A2_EXT
 #  GL_RGB10_A2UI     = 0x906F
 #  GL_R11F_G11F_B10F = 0x8C3A # same as GL_R11F_G11F_B10F_APPLE and GL_R11F_G11F_B10F_EXT
 #  GL_RGB9_E5        = 0x8C3D # same as GL_RGB9_E5_APPLE and GL_RGB9_E5_EXT


#  GL_COMPRESSED_RG        0x8226
#  GL_COMPRESSED_RGB        0x84ED # same as GL_COMPRESSED_RGB_ARB
#  GL_COMPRESSED_RGBA        0x84EE # same as GL_COMPRESSED_RGBA_ARB
#  GL_COMPRESSED_SRGB        0x8C48 # same as GL_COMPRESSED_SRGB_EXT
#  GL_COMPRESSED_SRGB_ALPHA      0x8C49 # same as GL_COMPRESSED_SRGB_ALPHA_EXT

# # S3TC/DXT/BC
#  GL_COMPRESSED_RGB_S3TC_DXT1_EXT     0x83F0
#  GL_COMPRESSED_RGBA_S3TC_DXT1_EXT    0x83F1
#  GL_COMPRESSED_RGBA_S3TC_DXT3_EXT    0x83F2
#  GL_COMPRESSED_RGBA_S3TC_DXT5_EXT    0x83F3
#  GL_COMPRESSED_SRGB_S3TC_DXT1_EXT    0x8C4C
#  GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT   0x8C4D
#  GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT   0x8C4E
#  GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT   0x8C4F
#  GL_COMPRESSED_LUMINANCE_LATC1_EXT    0x8C70
#  GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT   0x8C72
#  GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT  0x8C71
#  GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT 0x8C73
#  GL_COMPRESSED_RED_RGTC1       0x8DBB # same as GL_COMPRESSED_RED_RGTC1_EXT
#  GL_COMPRESSED_RG_RGTC2       0x8DBD # same as GL_COMPRESSED_RG_RGTC2_EXT
#  GL_COMPRESSED_SIGNED_RED_RGTC1     0x8DBC # same as GL_COMPRESSED_SIGNED_RED_RGTC1_EXT
#  GL_COMPRESSED_SIGNED_RG_RGTC2     0x8DBE # same as GL_COMPRESSED_SIGNED_RG_RGTC2_EXT
#  GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT    0x8E8E # same as GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB
#  GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT   0x8E8F # same as GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB
#  GL_COMPRESSED_RGBA_BPTC_UNORM     0x8E8C # same as GL_COMPRESSED_RGBA_BPTC_UNORM_ARB 
#  GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM    0x8E8D # same as GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB


# #
# # ETC
# #


#  GL_ETC1_RGB8_OES        0x8D64



#  GL_COMPRESSED_RGB8_ETC2       0x9274


#  GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2  0x9276


#  GL_COMPRESSED_RGBA8_ETC2_EAC     0x9278



#  GL_COMPRESSED_SRGB8_ETC2      0x9275


#  GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9277


#  GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC    0x9279



#  GL_COMPRESSED_R11_EAC       0x9270


#  GL_COMPRESSED_RG11_EAC       0x9272


#  GL_COMPRESSED_SIGNED_R11_EAC     0x9271


#  GL_COMPRESSED_SIGNED_RG11_EAC     0x9273


# #
# # PVRTC
# #


#  GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG    0x8C01
#  GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG    0x8C00
#  GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG    0x8C03
#  GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG    0x8C02


#  GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG    0x9137
#  GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG    0x9138


#  GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT    0x8A54
#  GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT    0x8A55
#  GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT  0x8A56
#  GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT  0x8A57


#  GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV2_IMG  0x93F0
#  GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV2_IMG  0x93F1


# #
# # ASTC
# #


#  GL_COMPRESSED_RGBA_ASTC_4x4_KHR     0x93B0
#  GL_COMPRESSED_RGBA_ASTC_5x4_KHR     0x93B1
#  GL_COMPRESSED_RGBA_ASTC_5x5_KHR     0x93B2
#  GL_COMPRESSED_RGBA_ASTC_6x5_KHR     0x93B3
#  GL_COMPRESSED_RGBA_ASTC_6x6_KHR     0x93B4
#  GL_COMPRESSED_RGBA_ASTC_8x5_KHR     0x93B5
#  GL_COMPRESSED_RGBA_ASTC_8x6_KHR     0x93B6
#  GL_COMPRESSED_RGBA_ASTC_8x8_KHR     0x93B7
#  GL_COMPRESSED_RGBA_ASTC_10x5_KHR    0x93B8
#  GL_COMPRESSED_RGBA_ASTC_10x6_KHR    0x93B9
#  GL_COMPRESSED_RGBA_ASTC_10x8_KHR    0x93BA
#  GL_COMPRESSED_RGBA_ASTC_10x10_KHR    0x93BB
#  GL_COMPRESSED_RGBA_ASTC_12x10_KHR    0x93BC
#  GL_COMPRESSED_RGBA_ASTC_12x12_KHR    0x93BD



#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR   0x93D0
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR   0x93D1
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR   0x93D2
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR   0x93D3
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR   0x93D4
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR   0x93D5
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR   0x93D6
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR   0x93D7
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR  0x93D8
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR  0x93D9
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR  0x93DA
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR  0x93DB
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR  0x93DC
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR  0x93DD



#  GL_COMPRESSED_RGBA_ASTC_3x3x3_OES    0x93C0
#  GL_COMPRESSED_RGBA_ASTC_4x3x3_OES    0x93C1
#  GL_COMPRESSED_RGBA_ASTC_4x4x3_OES    0x93C2
#  GL_COMPRESSED_RGBA_ASTC_4x4x4_OES    0x93C3
#  GL_COMPRESSED_RGBA_ASTC_5x4x4_OES    0x93C4
#  GL_COMPRESSED_RGBA_ASTC_5x5x4_OES    0x93C5
#  GL_COMPRESSED_RGBA_ASTC_5x5x5_OES    0x93C6
#  GL_COMPRESSED_RGBA_ASTC_6x5x5_OES    0x93C7
#  GL_COMPRESSED_RGBA_ASTC_6x6x5_OES    0x93C8
#  GL_COMPRESSED_RGBA_ASTC_6x6x6_OES    0x93C9



#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES  0x93E0
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES  0x93E1
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES  0x93E2
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES  0x93E3
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES  0x93E4
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES  0x93E5
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES  0x93E6
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES  0x93E7
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES  0x93E8
#  GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES  0x93E9


# #
# # ATC
# #


#  GL_ATC_RGB_AMD         0x8C92
#  GL_ATC_RGBA_EXPLICIT_ALPHA_AMD     0x8C93
#  GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD    0x87EE


# #
# # Palletized (combined palette)
# #


#  GL_PALETTE4_RGB8_OES       0x8B90
#  GL_PALETTE4_RGBA8_OES       0x8B91
#  GL_PALETTE4_R5_G6_B5_OES      0x8B92
#  GL_PALETTE4_RGBA4_OES       0x8B93
#  GL_PALETTE4_RGB5_A1_OES       0x8B94
#  GL_PALETTE8_RGB8_OES       0x8B95
#  GL_PALETTE8_RGBA8_OES       0x8B96
#  GL_PALETTE8_R5_G6_B5_OES      0x8B97
#  GL_PALETTE8_RGBA4_OES       0x8B98
#  GL_PALETTE8_RGB5_A1_OES       0x8B99


# #
# # Palletized (separate palette)
# #


#  GL_COLOR_INDEX1_EXT        0x80E2 # deprecated
#  GL_COLOR_INDEX2_EXT        0x80E3 # deprecated
#  GL_COLOR_INDEX4_EXT        0x80E4 # deprecated
#  GL_COLOR_INDEX8_EXT        0x80E5 # deprecated
#  GL_COLOR_INDEX12_EXT       0x80E6 # deprecated
#  GL_COLOR_INDEX16_EXT       0x80E7 # deprecated


# #
# # Depth/stencil
# #


#  GL_DEPTH_COMPONENT16       0x81A5 # same as GL_DEPTH_COMPONENT16_SGIX and GL_DEPTH_COMPONENT16_ARB


#  GL_DEPTH_COMPONENT24       0x81A6 # same as GL_DEPTH_COMPONENT24_SGIX and GL_DEPTH_COMPONENT24_ARB


#  GL_DEPTH_COMPONENT32       0x81A7 # same as GL_DEPTH_COMPONENT32_SGIX and GL_DEPTH_COMPONENT32_ARB and GL_DEPTH_COMPONENT32_OES


#  GL_DEPTH_COMPONENT32F       0x8CAC # same as GL_DEPTH_COMPONENT32F_ARB


#  GL_DEPTH_COMPONENT32F_NV      0x8DAB # note that this is different from GL_DEPTH_COMPONENT32F


#  GL_STENCIL_INDEX1        0x8D46 # same as GL_STENCIL_INDEX1_EXT


#  GL_STENCIL_INDEX4        0x8D47 # same as GL_STENCIL_INDEX4_EXT


#  GL_STENCIL_INDEX8        0x8D48 # same as GL_STENCIL_INDEX8_EXT


#  GL_STENCIL_INDEX16        0x8D49 # same as GL_STENCIL_INDEX16_EXT


#  GL_DEPTH24_STENCIL8        0x88F0 # same as GL_DEPTH24_STENCIL8_EXT and GL_DEPTH24_STENCIL8_OES


#  GL_DEPTH32F_STENCIL8       0x8CAD # same as GL_DEPTH32F_STENCIL8_ARB


#  GL_DEPTH32F_STENCIL8_NV       0x8DAC # note that this is different from GL_DEPTH32F_STENCIL8


#[
Excerpt from the original gl_format.h from https://github.com/SaschaWillems/Vulkan:
in case i accidently messed up the hex converting.
Someday I should probably verify or find a way to get rid of this nonsense 
Note: All values marked as deprecated by sascha/whoever in the original .h are not included here, such as GL_LUMINANCE32UI_EXT or GL_ALPHA8_SNORM
-------------------------------------------------------------------------------------------------------------------------------------------------

Internal format to glTexImage2D, glTexImage3D, glCompressedTexImage2D, glCompressedTexImage3D, glTexStorage2D, glTexStorage3D

//
// 8 bits per component
//

#if !defined( GL_R8 )
#define GL_R8											0x8229	// same as GL_R8_EXT
#endif
#if !defined( GL_RG8 )
#define GL_RG8											0x822B	// same as GL_RG8_EXT
#endif
#if !defined( GL_RGB8 )
#define GL_RGB8											0x8051	// same as GL_RGB8_EXT and GL_RGB8_OES
#endif
#if !defined( GL_RGBA8 )
#define GL_RGBA8										0x8058	// same as GL_RGBA8_EXT and GL_RGBA8_OES
#endif

#if !defined( GL_R8_SNORM )
#define GL_R8_SNORM										0x8F94
#endif
#if !defined( GL_RG8_SNORM )
#define GL_RG8_SNORM									0x8F95
#endif
#if !defined( GL_RGB8_SNORM )
#define GL_RGB8_SNORM									0x8F96
#endif
#if !defined( GL_RGBA8_SNORM )
#define GL_RGBA8_SNORM									0x8F97
#endif

#if !defined( GL_R8UI )
#define GL_R8UI											0x8232
#endif
#if !defined( GL_RG8UI )
#define GL_RG8UI										0x8238
#endif
#if !defined( GL_RGB8UI )
#define GL_RGB8UI										0x8D7D	// same as GL_RGB8UI_EXT
#endif
#if !defined( GL_RGBA8UI )
#define GL_RGBA8UI										0x8D7C	// same as GL_RGBA8UI_EXT
#endif

#if !defined( GL_R8I )
#define GL_R8I											0x8231
#endif
#if !defined( GL_RG8I )
#define GL_RG8I											0x8237
#endif
#if !defined( GL_RGB8I )
#define GL_RGB8I										0x8D8F	// same as GL_RGB8I_EXT
#endif
#if !defined( GL_RGBA8I )
#define GL_RGBA8I										0x8D8E	// same as GL_RGBA8I_EXT
#endif

#if !defined( GL_SR8 )
#define GL_SR8											0x8FBD	// same as GL_SR8_EXT
#endif
#if !defined( GL_SRG8 )
#define GL_SRG8											0x8FBE	// same as GL_SRG8_EXT
#endif
#if !defined( GL_SRGB8 )
#define GL_SRGB8										0x8C41	// same as GL_SRGB8_EXT
#endif
#if !defined( GL_SRGB8_ALPHA8 )
#define GL_SRGB8_ALPHA8									0x8C43	// same as GL_SRGB8_ALPHA8_EXT
#endif

//
// 16 bits per component
//

#if !defined( GL_R16 )
#define GL_R16											0x822A	// same as GL_R16_EXT
#endif
#if !defined( GL_RG16 )
#define GL_RG16											0x822C	// same as GL_RG16_EXT
#endif
#if !defined( GL_RGB16 )
#define GL_RGB16										0x8054	// same as GL_RGB16_EXT
#endif
#if !defined( GL_RGBA16 )
#define GL_RGBA16										0x805B	// same as GL_RGBA16_EXT
#endif

#if !defined( GL_R16_SNORM )
#define GL_R16_SNORM									0x8F98	// same as GL_R16_SNORM_EXT
#endif
#if !defined( GL_RG16_SNORM )
#define GL_RG16_SNORM									0x8F99	// same as GL_RG16_SNORM_EXT
#endif
#if !defined( GL_RGB16_SNORM )
#define GL_RGB16_SNORM									0x8F9A	// same as GL_RGB16_SNORM_EXT
#endif
#if !defined( GL_RGBA16_SNORM )
#define GL_RGBA16_SNORM									0x8F9B	// same as GL_RGBA16_SNORM_EXT
#endif

#if !defined( GL_R16UI )
#define GL_R16UI										0x8234
#endif
#if !defined( GL_RG16UI )
#define GL_RG16UI										0x823A
#endif
#if !defined( GL_RGB16UI )
#define GL_RGB16UI										0x8D77	// same as GL_RGB16UI_EXT
#endif
#if !defined( GL_RGBA16UI )
#define GL_RGBA16UI										0x8D76	// same as GL_RGBA16UI_EXT
#endif

#if !defined( GL_R16I )
#define GL_R16I											0x8233
#endif
#if !defined( GL_RG16I )
#define GL_RG16I										0x8239
#endif
#if !defined( GL_RGB16I )
#define GL_RGB16I										0x8D89	// same as GL_RGB16I_EXT
#endif
#if !defined( GL_RGBA16I )
#define GL_RGBA16I										0x8D88	// same as GL_RGBA16I_EXT
#endif

#if !defined( GL_R16F )
#define GL_R16F											0x822D	// same as GL_R16F_EXT
#endif
#if !defined( GL_RG16F )
#define GL_RG16F										0x822F	// same as GL_RG16F_EXT
#endif
#if !defined( GL_RGB16F )
#define GL_RGB16F										0x881B	// same as GL_RGB16F_EXT and GL_RGB16F_ARB
#endif
#if !defined( GL_RGBA16F )
#define GL_RGBA16F										0x881A	// sama as GL_RGBA16F_EXT and GL_RGBA16F_ARB
#endif

//
// 32 bits per component
//

#if !defined( GL_R32UI )
#define GL_R32UI										0x8236
#endif
#if !defined( GL_RG32UI )
#define GL_RG32UI										0x823C
#endif
#if !defined( GL_RGB32UI )
#define GL_RGB32UI										0x8D71	// same as GL_RGB32UI_EXT
#endif
#if !defined( GL_RGBA32UI )
#define GL_RGBA32UI										0x8D70	// same as GL_RGBA32UI_EXT
#endif

#if !defined( GL_R32I )
#define GL_R32I											0x8235
#endif
#if !defined( GL_RG32I )
#define GL_RG32I										0x823B
#endif
#if !defined( GL_RGB32I )
#define GL_RGB32I										0x8D83	// same as GL_RGB32I_EXT 
#endif
#if !defined( GL_RGBA32I )
#define GL_RGBA32I										0x8D82	// same as GL_RGBA32I_EXT
#endif

#if !defined( GL_R32F )
#define GL_R32F											0x822E	// same as GL_R32F_EXT
#endif
#if !defined( GL_RG32F )
#define GL_RG32F										0x8230	// same as GL_RG32F_EXT
#endif
#if !defined( GL_RGB32F )
#define GL_RGB32F										0x8815	// same as GL_RGB32F_EXT and GL_RGB32F_ARB
#endif
#if !defined( GL_RGBA32F )
#define GL_RGBA32F										0x8814	// same as GL_RGBA32F_EXT and GL_RGBA32F_ARB
#endif

//
// Packed
//

#if !defined( GL_R3_G3_B2 )
#define GL_R3_G3_B2										0x2A10
#endif
#if !defined( GL_RGB4 )
#define GL_RGB4											0x804F	// same as GL_RGB4_EXT
#endif
#if !defined( GL_RGB5 )
#define GL_RGB5											0x8050	// same as GL_RGB5_EXT
#endif
#if !defined( GL_RGB565 )
#define GL_RGB565										0x8D62	// same as GL_RGB565_EXT and GL_RGB565_OES
#endif
#if !defined( GL_RGB10 )
#define GL_RGB10										0x8052	// same as GL_RGB10_EXT
#endif
#if !defined( GL_RGB12 )
#define GL_RGB12										0x8053	// same as GL_RGB12_EXT
#endif
#if !defined( GL_RGBA2 )
#define GL_RGBA2										0x8055	// same as GL_RGBA2_EXT
#endif
#if !defined( GL_RGBA4 )
#define GL_RGBA4										0x8056	// same as GL_RGBA4_EXT and GL_RGBA4_OES
#endif
#if !defined( GL_RGBA12 )
#define GL_RGBA12										0x805A	// same as GL_RGBA12_EXT
#endif
#if !defined( GL_RGB5_A1 )
#define GL_RGB5_A1										0x8057	// same as GL_RGB5_A1_EXT and GL_RGB5_A1_OES
#endif
#if !defined( GL_RGB10_A2 )
#define GL_RGB10_A2										0x8059	// same as GL_RGB10_A2_EXT
#endif
#if !defined( GL_RGB10_A2UI )
#define GL_RGB10_A2UI									0x906F
#endif
#if !defined( GL_R11F_G11F_B10F )
#define GL_R11F_G11F_B10F								0x8C3A	// same as GL_R11F_G11F_B10F_APPLE and GL_R11F_G11F_B10F_EXT
#endif
#if !defined( GL_RGB9_E5 )
#define GL_RGB9_E5										0x8C3D	// same as GL_RGB9_E5_APPLE and GL_RGB9_E5_EXT
#endif

#if !defined( GL_COMPRESSED_RG )
#define GL_COMPRESSED_RG								0x8226
#endif
#if !defined( GL_COMPRESSED_RGB )
#define GL_COMPRESSED_RGB								0x84ED	// same as GL_COMPRESSED_RGB_ARB
#endif
#if !defined( GL_COMPRESSED_RGBA )
#define GL_COMPRESSED_RGBA								0x84EE	// same as GL_COMPRESSED_RGBA_ARB
#endif
#if !defined( GL_COMPRESSED_SRGB )
#define GL_COMPRESSED_SRGB								0x8C48	// same as GL_COMPRESSED_SRGB_EXT
#endif
#if !defined( GL_COMPRESSED_SRGB_ALPHA )
#define GL_COMPRESSED_SRGB_ALPHA						0x8C49	// same as GL_COMPRESSED_SRGB_ALPHA_EXT
#endif

S3TC/DXT/BC
//

#if !defined( GL_COMPRESSED_RGB_S3TC_DXT1_EXT )
#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT					0x83F0
#endif
#if !defined( GL_COMPRESSED_RGBA_S3TC_DXT1_EXT )
#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT				0x83F1
#endif
#if !defined( GL_COMPRESSED_RGBA_S3TC_DXT3_EXT )
#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT				0x83F2
#endif
#if !defined( GL_COMPRESSED_RGBA_S3TC_DXT5_EXT )
#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT				0x83F3
#endif

#if !defined( GL_COMPRESSED_SRGB_S3TC_DXT1_EXT )
#define GL_COMPRESSED_SRGB_S3TC_DXT1_EXT				0x8C4C
#endif
#if !defined( GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT )
#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT			0x8C4D
#endif
#if !defined( GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT )
#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT			0x8C4E
#endif
#if !defined( GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT )
#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT			0x8C4F
#endif

#if !defined( GL_COMPRESSED_LUMINANCE_LATC1_EXT )
#define GL_COMPRESSED_LUMINANCE_LATC1_EXT				0x8C70
#endif
#if !defined( GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT )
#define GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT			0x8C72
#endif
#if !defined( GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT )
#define GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT		0x8C71
#endif
#if !defined( GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT )
#define GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT	0x8C73
#endif

#if !defined( GL_COMPRESSED_RED_RGTC1 )
#define GL_COMPRESSED_RED_RGTC1							0x8DBB	// same as GL_COMPRESSED_RED_RGTC1_EXT
#endif
#if !defined( GL_COMPRESSED_RG_RGTC2 )
#define GL_COMPRESSED_RG_RGTC2							0x8DBD	// same as GL_COMPRESSED_RG_RGTC2_EXT
#endif
#if !defined( GL_COMPRESSED_SIGNED_RED_RGTC1 )
#define GL_COMPRESSED_SIGNED_RED_RGTC1					0x8DBC	// same as GL_COMPRESSED_SIGNED_RED_RGTC1_EXT
#endif
#if !defined( GL_COMPRESSED_SIGNED_RG_RGTC2 )
#define GL_COMPRESSED_SIGNED_RG_RGTC2					0x8DBE	// same as GL_COMPRESSED_SIGNED_RG_RGTC2_EXT
#endif

#if !defined( GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT )
#define GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT				0x8E8E	// same as GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB
#endif
#if !defined( GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT )
#define GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT			0x8E8F	// same as GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB
#endif
#if !defined( GL_COMPRESSED_RGBA_BPTC_UNORM )
#define GL_COMPRESSED_RGBA_BPTC_UNORM					0x8E8C	// same as GL_COMPRESSED_RGBA_BPTC_UNORM_ARB	
#endif
#if !defined( GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM )
#define GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM				0x8E8D	// same as GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB
#endif

//
// ETC
//

#if !defined( GL_ETC1_RGB8_OES )
#define GL_ETC1_RGB8_OES								0x8D64
#endif

#if !defined( GL_COMPRESSED_RGB8_ETC2 )
#define GL_COMPRESSED_RGB8_ETC2							0x9274
#endif
#if !defined( GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 )
#define GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2		0x9276
#endif
#if !defined( GL_COMPRESSED_RGBA8_ETC2_EAC )
#define GL_COMPRESSED_RGBA8_ETC2_EAC					0x9278
#endif

#if !defined( GL_COMPRESSED_SRGB8_ETC2 )
#define GL_COMPRESSED_SRGB8_ETC2						0x9275
#endif
#if !defined( GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 )
#define GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2	0x9277
#endif
#if !defined( GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC )
#define GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC				0x9279
#endif

#if !defined( GL_COMPRESSED_R11_EAC )
#define GL_COMPRESSED_R11_EAC							0x9270
#endif
#if !defined( GL_COMPRESSED_RG11_EAC )
#define GL_COMPRESSED_RG11_EAC							0x9272
#endif
#if !defined( GL_COMPRESSED_SIGNED_R11_EAC )
#define GL_COMPRESSED_SIGNED_R11_EAC					0x9271
#endif
#if !defined( GL_COMPRESSED_SIGNED_RG11_EAC )
#define GL_COMPRESSED_SIGNED_RG11_EAC					0x9273
#endif

//
// PVRTC
//

#if !defined( GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG )
#define GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG				0x8C01
#define GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG				0x8C00
#define GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG				0x8C03
#define GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG				0x8C02
#endif
#if !defined( GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG )
#define GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG				0x9137
#define GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG				0x9138
#endif
#if !defined( GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT )
#define GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT				0x8A54
#define GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT				0x8A55
#define GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT		0x8A56
#define GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT		0x8A57
#endif
#if !defined( GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV2_IMG )
#define GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV2_IMG		0x93F0
#define GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV2_IMG		0x93F1
#endif

//
// ASTC
//

#if !defined( GL_COMPRESSED_RGBA_ASTC_4x4_KHR )
#define GL_COMPRESSED_RGBA_ASTC_4x4_KHR					0x93B0
#define GL_COMPRESSED_RGBA_ASTC_5x4_KHR					0x93B1
#define GL_COMPRESSED_RGBA_ASTC_5x5_KHR					0x93B2
#define GL_COMPRESSED_RGBA_ASTC_6x5_KHR					0x93B3
#define GL_COMPRESSED_RGBA_ASTC_6x6_KHR					0x93B4
#define GL_COMPRESSED_RGBA_ASTC_8x5_KHR					0x93B5
#define GL_COMPRESSED_RGBA_ASTC_8x6_KHR					0x93B6
#define GL_COMPRESSED_RGBA_ASTC_8x8_KHR					0x93B7
#define GL_COMPRESSED_RGBA_ASTC_10x5_KHR				0x93B8
#define GL_COMPRESSED_RGBA_ASTC_10x6_KHR				0x93B9
#define GL_COMPRESSED_RGBA_ASTC_10x8_KHR				0x93BA
#define GL_COMPRESSED_RGBA_ASTC_10x10_KHR				0x93BB
#define GL_COMPRESSED_RGBA_ASTC_12x10_KHR				0x93BC
#define GL_COMPRESSED_RGBA_ASTC_12x12_KHR				0x93BD
#endif

#if !defined( GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR )
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR			0x93D0
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR			0x93D1
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR			0x93D2
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR			0x93D3
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR			0x93D4
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR			0x93D5
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR			0x93D6
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR			0x93D7
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR		0x93D8
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR		0x93D9
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR		0x93DA
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR		0x93DB
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR		0x93DC
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR		0x93DD
#endif

#if !defined( GL_COMPRESSED_RGBA_ASTC_3x3x3_OES )
#define GL_COMPRESSED_RGBA_ASTC_3x3x3_OES				0x93C0
#define GL_COMPRESSED_RGBA_ASTC_4x3x3_OES				0x93C1
#define GL_COMPRESSED_RGBA_ASTC_4x4x3_OES				0x93C2
#define GL_COMPRESSED_RGBA_ASTC_4x4x4_OES				0x93C3
#define GL_COMPRESSED_RGBA_ASTC_5x4x4_OES				0x93C4
#define GL_COMPRESSED_RGBA_ASTC_5x5x4_OES				0x93C5
#define GL_COMPRESSED_RGBA_ASTC_5x5x5_OES				0x93C6
#define GL_COMPRESSED_RGBA_ASTC_6x5x5_OES				0x93C7
#define GL_COMPRESSED_RGBA_ASTC_6x6x5_OES				0x93C8
#define GL_COMPRESSED_RGBA_ASTC_6x6x6_OES				0x93C9
#endif

#if !defined( GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES )
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES		0x93E0
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES		0x93E1
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES		0x93E2
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES		0x93E3
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES		0x93E4
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES		0x93E5
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES		0x93E6
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES		0x93E7
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES		0x93E8
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES		0x93E9
#endif

//
// ATC
//

#if !defined( GL_ATC_RGB_AMD )
#define GL_ATC_RGB_AMD									0x8C92
#define GL_ATC_RGBA_EXPLICIT_ALPHA_AMD					0x8C93
#define GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD				0x87EE
#endif

//
// Palletized (combined palette)
//

#if !defined( GL_PALETTE4_RGB8_OES )
#define GL_PALETTE4_RGB8_OES							0x8B90
#define GL_PALETTE4_RGBA8_OES							0x8B91
#define GL_PALETTE4_R5_G6_B5_OES						0x8B92
#define GL_PALETTE4_RGBA4_OES							0x8B93
#define GL_PALETTE4_RGB5_A1_OES							0x8B94
#define GL_PALETTE8_RGB8_OES							0x8B95
#define GL_PALETTE8_RGBA8_OES							0x8B96
#define GL_PALETTE8_R5_G6_B5_OES						0x8B97
#define GL_PALETTE8_RGBA4_OES							0x8B98
#define GL_PALETTE8_RGB5_A1_OES							0x8B99

 Depth/stencil
//

#if !defined( GL_DEPTH_COMPONENT16 )
#define GL_DEPTH_COMPONENT16							0x81A5	// same as GL_DEPTH_COMPONENT16_SGIX and GL_DEPTH_COMPONENT16_ARB
#endif
#if !defined( GL_DEPTH_COMPONENT24 )
#define GL_DEPTH_COMPONENT24							0x81A6	// same as GL_DEPTH_COMPONENT24_SGIX and GL_DEPTH_COMPONENT24_ARB
#endif
#if !defined( GL_DEPTH_COMPONENT32 )
#define GL_DEPTH_COMPONENT32							0x81A7	// same as GL_DEPTH_COMPONENT32_SGIX and GL_DEPTH_COMPONENT32_ARB and GL_DEPTH_COMPONENT32_OES
#endif
#if !defined( GL_DEPTH_COMPONENT32F )
#define GL_DEPTH_COMPONENT32F							0x8CAC	// same as GL_DEPTH_COMPONENT32F_ARB
#endif
#if !defined( GL_DEPTH_COMPONENT32F_NV )
#define GL_DEPTH_COMPONENT32F_NV						0x8DAB	// note that this is different from GL_DEPTH_COMPONENT32F
#endif
#if !defined( GL_STENCIL_INDEX1 )
#define GL_STENCIL_INDEX1								0x8D46	// same as GL_STENCIL_INDEX1_EXT
#endif
#if !defined( GL_STENCIL_INDEX4 )
#define GL_STENCIL_INDEX4								0x8D47	// same as GL_STENCIL_INDEX4_EXT
#endif
#if !defined( GL_STENCIL_INDEX8 )
#define GL_STENCIL_INDEX8								0x8D48	// same as GL_STENCIL_INDEX8_EXT
#endif
#if !defined( GL_STENCIL_INDEX16 )
#define GL_STENCIL_INDEX16								0x8D49	// same as GL_STENCIL_INDEX16_EXT
#endif
#if !defined( GL_DEPTH24_STENCIL8 )
#define GL_DEPTH24_STENCIL8								0x88F0	// same as GL_DEPTH24_STENCIL8_EXT and GL_DEPTH24_STENCIL8_OES
#endif
#if !defined( GL_DEPTH32F_STENCIL8 )
#define GL_DEPTH32F_STENCIL8							0x8CAD	// same as GL_DEPTH32F_STENCIL8_ARB
#endif
#if !defined( GL_DEPTH32F_STENCIL8_NV )
#define GL_DEPTH32F_STENCIL8_NV							0x8DAC	// note that this is different from GL_DEPTH32F_STENCIL8
]#

# How to add a currently unhandled format:
#1. echo KtxTexture.glInternalformat
#2. convert the value to hex
#3. ctrl-f the hex value for the matching GL_XXXXX
#.4. Find the original case block of the match in the C `glGetFormatSize` (bottom of file)
proc aformatSize*( format: GlFormats, pFormatSize: var GlFormatSize ) = 
 case format
  
 of GL_RGBA8:              
  pFormatSize.flags = 0
  pFormatSize.paletteSizeInBits = 0
  pFormatSize.blockSizeInBits = 4 * 8
  pFormatSize.blockWidth = 1
  pFormatSize.blockHeight = 1
  pFormatSize.blockDepth = 1

 # of GL_R8 or GL_R8_SNORM or GL_R8UI or GL_R8I: 
 #  pFormatSize.flags = 0 
 #  pFormatSize.paletteSizeInBits = 0 
 #  pFormatSize.blockSizeInBits = 1 * 8
 #  pFormatSize.blockWidth = 1  
 #  pFormatSize.blockHeight = 1
 #  pFormatSize.blockDepth = 1
   
#  of GL_RG8 or GL_RG8_SNORM:# or GL_RG8UI:# or GL_RG8I:# or GL_SRG8:
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 2 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB8 or GL_RGB8_SNORM or GL_RGB8UI or GL_RGB8I or GL_SRGB8: 
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 3 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1


#  of GL_R16 or GL_R16_SNORM or GL_R16UI or GL_R16I or GL_R16F:          
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 2 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RG16 or GL_RG16_SNORM or GL_RG16UI or GL_RG16I or GL_RG16F :             
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 4 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB16 or GL_RGB16_SNORM or GL_RGB16UI or GL_RGB16I or GL_RGB16F:
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 6 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGBA16 or GL_RGBA16_SNORM or GL_RGBA16UI or GL_RGBA16I or GL_RGBA16F:           
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 8 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_R32UI or GL_R32I or GL_R32F:          
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 4 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RG32UI or GL_RG32I or GL_RG32F:                   
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 8 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB32UI or GL_RGB32I or GL_RGB32F:
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 12 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGBA32UI or GL_RGBA32I or GL_RGBA32F :          
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 16 * 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  # Packed
#  of GL_R3_G3_B2:          # 3-component 3:3:2, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB4:           # 3-component 4:4:4, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 12
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB5:           # 3-component 5:5:5, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 16
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB565:           # 3-component 5:6:5, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 16
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB10:           # 3-component 10:10:10, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 32
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB12:           # 3-component 12:12:12, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 36
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGBA2:           # 4-component 2:2:2:2, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGBA4:           # 4-component 4:4:4:4, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 16
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGBA12:           # 4-component 12:12:12:12, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 48
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB5_A1:          # 4-component 5:5:5:1, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 32
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB10_A2:          # 4-component 10:10:10:2, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 32
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_RGB10_A2UI:          # 4-component 10:10:10:2, unsigned integer
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 32
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_R11F_G11F_B10F or GL_RGB9_E5:         
#   pFormatSize.flags = GL_FORMAT_SIZE_PACKED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 32
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_COMPRESSED_RGB_S3TC_DXT1_EXT or GL_COMPRESSED_RGBA_S3TC_DXT1_EXT or GL_COMPRESSED_SRGB_S3TC_DXT1_EXT or GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:     
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  of GL_COMPRESSED_RGBA_S3TC_DXT5_EXT or GL_COMPRESSED_RGBA_S3TC_DXT3_EXT or GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT or GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:     
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  of GL_COMPRESSED_LUMINANCE_LATC1_EXT or GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:    
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1
 
#  of GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT or GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  of GL_COMPRESSED_RED_RGTC1 or GL_COMPRESSED_SIGNED_RED_RGTC1:  
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  of GL_COMPRESSED_RG_RGTC2 or GL_COMPRESSED_SIGNED_RG_RGTC2:      
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  of GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT or GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT or GL_COMPRESSED_RGBA_BPTC_UNORM or  GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  of GL_ETC1_RGB8_OES or GL_COMPRESSED_RGB8_ETC2 or GL_COMPRESSED_SRGB8_ETC2 or GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 or GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:         
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  of GL_COMPRESSED_RGBA8_ETC2_EAC or GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:      
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  of GL_COMPRESSED_R11_EAC or GL_COMPRESSED_SIGNED_R11_EAC:       
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  of GL_COMPRESSED_RG11_EAC or GL_COMPRESSED_SIGNED_RG11_EAC: 
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  # PVRTC
#  # 3-component PVRTC, 16x8 blocks, unsigned normalized
#  # 3-component PVRTC, 16x8 blocks, sRGB
#  # 4-component PVRTC, 16x8 blocks, unsigned normalized
#  # 4-component PVRTC, 16x8 blocks, sRGB
#  of GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG or GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT or GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG or GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT:     
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 16
#   pFormatSize.blockHeight = 8
#   pFormatSize.blockDepth = 1

#  # 3-component PVRTC, 8x8 blocks, unsigned normalized
#  # 3-component PVRTC, 8x8 blocks, sRGB
#  # 4-component PVRTC, 8x8 blocks, unsigned normalized
#  # 4-component PVRTC, 8x8 blocks, sRGB
#  of GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG or GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT or GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG or GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT:    
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 8
#   pFormatSize.blockHeight = 8
#   pFormatSize.blockDepth = 1

#  # 4-component PVRTC, 8x4 blocks, unsigned normalized
#  # 4-component PVRTC, 8x4 blocks, sRGB
#  of GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG or GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV2_IMG:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 8
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1
 
#  # 4-component PVRTC, 4x4 blocks, unsigned normalized
#  # 4-component PVRTC, 4x4 blocks, sRGB
#  of GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG or GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV2_IMG:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  # ASTC
#  # 4-component ASTC, 4x4 blocks, unsigned normalized
#  # 4-component ASTC, 4x4 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_4x4_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  # 4-component ASTC, 5x4 blocks, unsigned normalized
#  # 4-component ASTC, 5x4 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_5x4_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:  
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 5
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1
 
#  # 4-component ASTC, 5x5 blocks, unsigned normalized
#  # 4-component ASTC, 5x5 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_5x5_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 5
#   pFormatSize.blockHeight = 5
#   pFormatSize.blockDepth = 1
 
#  # 4-component ASTC, 6x5 blocks, unsigned normalized
#  # 4-component ASTC, 6x5 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_6x5_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 6
#   pFormatSize.blockHeight = 5
#   pFormatSize.blockDepth = 1
 
#  # 4-component ASTC, 6x6 blocks, unsigned normalized
#  # 4-component ASTC, 6x6 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_6x6_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 6
#   pFormatSize.blockHeight = 6
#   pFormatSize.blockDepth = 1

# # 4-component ASTC, 8x5 blocks, unsigned normalized
# # 4-component ASTC, 8x5 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_8x5_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 8
#   pFormatSize.blockHeight = 5
#   pFormatSize.blockDepth = 1
 
#  # 4-component ASTC, 8x6 blocks, unsigned normalized
#  # 4-component ASTC, 8x6 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_8x6_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 8
#   pFormatSize.blockHeight = 6
#   pFormatSize.blockDepth = 1

#  # 4-component ASTC, 8x8 blocks, unsigned normalized
#  # 4-component ASTC, 8x8 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_8x8_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:   
 
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 8
#   pFormatSize.blockHeight = 8
#   pFormatSize.blockDepth = 1

# # 4-component ASTC, 10x5 blocks, unsigned normalized
# # 4-component ASTC, 10x5 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_10x5_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:     
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 10
#   pFormatSize.blockHeight = 5
#   pFormatSize.blockDepth = 1

#  # 4-component ASTC, 10x6 blocks, unsigned normalized
#  # 4-component ASTC, 10x6 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_10x6_KHR  or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:  
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 10
#   pFormatSize.blockHeight = 6
#   pFormatSize.blockDepth = 1

#  # 4-component ASTC, 10x8 blocks, unsigned normalized
#  # 4-component ASTC, 10x8 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_10x8_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:        
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 10
#   pFormatSize.blockHeight = 8
#   pFormatSize.blockDepth = 1

#  # 4-component ASTC, 10x10 blocks, unsigned normalized
#  # 4-component ASTC, 10x10 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_10x10_KHR  or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 10
#   pFormatSize.blockHeight = 10
#   pFormatSize.blockDepth = 1

#  # 4-component ASTC, 12x10 blocks, unsigned normalized
#  # 4-component ASTC, 12x10 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_12x10_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR: 
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 12
#   pFormatSize.blockHeight = 10
#   pFormatSize.blockDepth = 1

#  # 4-component ASTC, 12x12 blocks, unsigned normalized
#  # 4-component ASTC, 12x12 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_12x12_KHR or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 12
#   pFormatSize.blockHeight = 12
#   pFormatSize.blockDepth = 1

#   # 4-component ASTC, 3x3x3 blocks, unsigned normalized
#   # 4-component ASTC, 3x3x3 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_3x3x3_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 3
#   pFormatSize.blockHeight = 3
#   pFormatSize.blockDepth = 3
 
#  # 4-component ASTC, 4x3x3 blocks, unsigned normalized
#  # 4-component ASTC, 4x3x3 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_4x3x3_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 3
#   pFormatSize.blockDepth = 3

# # 4-component ASTC, 4x4x3 blocks, unsigned normalized
# # 4-component ASTC, 4x4x3 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_4x4x3_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES: 
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 3

#  # 4-component ASTC, 4x4x4 blocks, unsigned normalized
#  # 4-component ASTC, 4x4x4 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_4x4x4_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES:     
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 4

#   # 4-component ASTC, 5x4x4 blocks, unsigned normalized
#   # 4-component ASTC, 5x4x4 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_5x4x4_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES:    
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 5
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 4

#  # 4-component ASTC, 5x5x4 blocks, unsigned normalized
#  # 4-component ASTC, 5x5x4 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_5x5x4_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES:     
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 5
#   pFormatSize.blockHeight = 5
#   pFormatSize.blockDepth = 4
 
#  # 4-component ASTC, 5x5x5 blocks, unsigned normalized
#  # 4-component ASTC, 5x5x5 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_5x5x5_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES:     
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 5
#   pFormatSize.blockHeight = 5
#   pFormatSize.blockDepth = 5

#  # 4-component ASTC, 6x5x5 blocks, unsigned normalized
#  # 4-component ASTC, 6x5x5 blocks, sRGB:     
#  of GL_COMPRESSED_RGBA_ASTC_6x5x5_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES:   
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 6
#   pFormatSize.blockHeight = 5
#   pFormatSize.blockDepth = 5

#  # 4-component ASTC, 6x6x5 blocks, unsigned normalized
#  # 4-component ASTC, 6x6x5 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_6x6x5_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES:
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 6
#   pFormatSize.blockHeight = 6
#   pFormatSize.blockDepth = 5

#  # 4-component ASTC, 6x6x6 blocks, unsigned normalized
#  # 4-component ASTC, 6x6x6 blocks, sRGB
#  of GL_COMPRESSED_RGBA_ASTC_6x6x6_OES or GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES :     
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 6
#   pFormatSize.blockHeight = 6
#   pFormatSize.blockDepth = 6

#  # ATC
#  of GL_ATC_RGB_AMD:         # 3-component, 4x4 blocks, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  # 4-component, 4x4 blocks, unsigned normalized
#  # 4-component, 4x4 blocks, unsigned normalized
#  of GL_ATC_RGBA_EXPLICIT_ALPHA_AMD or  GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:     
#   pFormatSize.flags = GL_FORMAT_SIZE_COMPRESSED_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 128
#   pFormatSize.blockWidth = 4
#   pFormatSize.blockHeight = 4
#   pFormatSize.blockDepth = 1

#  # Palletized
#  of GL_PALETTE4_RGB8_OES:        # 3-component 8:8:8,   4-bit palette, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PALETTIZED_BIT
#   pFormatSize.paletteSizeInBits = 16 * 24
#   pFormatSize.blockSizeInBits = 4
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_PALETTE4_RGBA8_OES:        # 4-component 8:8:8:8, 4-bit palette, unsigned normalized
#   pFormatSize.flags = GL_FORMAT_SIZE_PALETTIZED_BIT
#   pFormatSize.paletteSizeInBits = 16 * 32
#   pFormatSize.blockSizeInBits = 4
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  # 3-component 5:6:5,   4-bit palette, unsigned normalized
#  # 4-component 4:4:4:4, 4-bit palette, unsigned normalized
#  # 4-component 5:5:5:1, 4-bit palette, unsigned normalized
#  of GL_PALETTE4_R5_G6_B5_OES or GL_PALETTE4_RGBA4_OES or  GL_PALETTE4_RGB5_A1_OES:
#   pFormatSize.flags = GL_FORMAT_SIZE_PALETTIZED_BIT
#   pFormatSize.paletteSizeInBits = 16 * 16
#   pFormatSize.blockSizeInBits = 4
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  # 3-component 8:8:8,   8-bit palette, unsigned normalized
#  of GL_PALETTE8_RGB8_OES:        
#   pFormatSize.flags = GL_FORMAT_SIZE_PALETTIZED_BIT
#   pFormatSize.paletteSizeInBits = 256 * 24
#   pFormatSize.blockSizeInBits = 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

# # 4-component 8:8:8:8, 8-bit palette, unsigned normalized
#  of GL_PALETTE8_RGBA8_OES:        
#   pFormatSize.flags = GL_FORMAT_SIZE_PALETTIZED_BIT
#   pFormatSize.paletteSizeInBits = 256 * 32
#   pFormatSize.blockSizeInBits = 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  # 3-component 5:6:5,   8-bit palette, unsigned normalized
#  # 4-component 4:4:4:4, 8-bit palette, unsigned normalized
#  # 4-component 5:5:5:1, 8-bit palette, unsigned normalized
#  of GL_PALETTE8_R5_G6_B5_OES or GL_PALETTE8_RGBA4_OES or GL_PALETTE8_RGB5_A1_OES:       
#   pFormatSize.flags = GL_FORMAT_SIZE_PALETTIZED_BIT
#   pFormatSize.paletteSizeInBits = 256 * 16
#   pFormatSize.blockSizeInBits = 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  # Depth/stencil
#  of GL_DEPTH_COMPONENT16:
#   pFormatSize.flags = GL_FORMAT_SIZE_DEPTH_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 16
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_DEPTH_COMPONENT24 or GL_DEPTH_COMPONENT32 or GL_DEPTH_COMPONENT32F or  GL_DEPTH_COMPONENT32F_NV:
#   pFormatSize.flags = GL_FORMAT_SIZE_DEPTH_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 32
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_STENCIL_INDEX1:
#   pFormatSize.flags = GL_FORMAT_SIZE_STENCIL_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 1
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_STENCIL_INDEX4:
#   pFormatSize.flags = GL_FORMAT_SIZE_STENCIL_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 4
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_STENCIL_INDEX8:
#   pFormatSize.flags = GL_FORMAT_SIZE_STENCIL_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_STENCIL_INDEX16:
#   pFormatSize.flags = GL_FORMAT_SIZE_STENCIL_BIT
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 16
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_DEPTH24_STENCIL8:
#   pFormatSize.flags = bitor(GL_FORMAT_SIZE_DEPTH_BIT, GL_FORMAT_SIZE_STENCIL_BIT)
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 32
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  of GL_DEPTH32F_STENCIL8 or GL_DEPTH32F_STENCIL8_NV:
#   pFormatSize.flags = bitor(GL_FORMAT_SIZE_DEPTH_BIT, GL_FORMAT_SIZE_STENCIL_BIT)
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 64
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

#  else:
#   pFormatSize.flags = 0
#   pFormatSize.paletteSizeInBits = 0
#   pFormatSize.blockSizeInBits = 8
#   pFormatSize.blockWidth = 1
#   pFormatSize.blockHeight = 1
#   pFormatSize.blockDepth = 1

# until we know for """sure""" the glGetFormatSize port is correct
#[

static inline void glGetFormatSize( const GLenum internalFormat, GlFormatSize * pFormatSize )
{
	switch ( internalFormat )
	{
		//
		// 8 bits per component
		//
		case GL_R8:												// 1-component, 8-bit unsigned normalized
		case GL_R8_SNORM:										// 1-component, 8-bit signed normalized
		case GL_R8UI:											// 1-component, 8-bit unsigned integer
		case GL_R8I:											// 1-component, 8-bit signed integer
		case GL_SR8:											// 1-component, 8-bit sRGB
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 1 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RG8:											// 2-component, 8-bit unsigned normalized
		case GL_RG8_SNORM:										// 2-component, 8-bit signed normalized
		case GL_RG8UI:											// 2-component, 8-bit unsigned integer
		case GL_RG8I:											// 2-component, 8-bit signed integer
		case GL_SRG8:											// 2-component, 8-bit sRGB
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 2 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB8:											// 3-component, 8-bit unsigned normalized
		case GL_RGB8_SNORM:										// 3-component, 8-bit signed normalized
		case GL_RGB8UI:											// 3-component, 8-bit unsigned integer
		case GL_RGB8I:											// 3-component, 8-bit signed integer
		case GL_SRGB8:											// 3-component, 8-bit sRGB
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 3 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGBA8:											// 4-component, 8-bit unsigned normalized
		case GL_RGBA8_SNORM:									// 4-component, 8-bit signed normalized
		case GL_RGBA8UI:										// 4-component, 8-bit unsigned integer
		case GL_RGBA8I:											// 4-component, 8-bit signed integer
		case GL_SRGB8_ALPHA8:									// 4-component, 8-bit sRGB
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 4 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;

		//
		// 16 bits per component
		//
		case GL_R16:											// 1-component, 16-bit unsigned normalized
		case GL_R16_SNORM:										// 1-component, 16-bit signed normalized
		case GL_R16UI:											// 1-component, 16-bit unsigned integer
		case GL_R16I:											// 1-component, 16-bit signed integer
		case GL_R16F:											// 1-component, 16-bit floating-point
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 2 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RG16:											// 2-component, 16-bit unsigned normalized
		case GL_RG16_SNORM:										// 2-component, 16-bit signed normalized
		case GL_RG16UI:											// 2-component, 16-bit unsigned integer
		case GL_RG16I:											// 2-component, 16-bit signed integer
		case GL_RG16F:											// 2-component, 16-bit floating-point
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 4 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB16:											// 3-component, 16-bit unsigned normalized
		case GL_RGB16_SNORM:									// 3-component, 16-bit signed normalized
		case GL_RGB16UI:										// 3-component, 16-bit unsigned integer
		case GL_RGB16I:											// 3-component, 16-bit signed integer
		case GL_RGB16F:											// 3-component, 16-bit floating-point
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 6 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGBA16:											// 4-component, 16-bit unsigned normalized
		case GL_RGBA16_SNORM:									// 4-component, 16-bit signed normalized
		case GL_RGBA16UI:										// 4-component, 16-bit unsigned integer
		case GL_RGBA16I:										// 4-component, 16-bit signed integer
		case GL_RGBA16F:										// 4-component, 16-bit floating-point
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 8 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;

		//
		// 32 bits per component
		//
		case GL_R32UI:											// 1-component, 32-bit unsigned integer
		case GL_R32I:											// 1-component, 32-bit signed integer
		case GL_R32F:											// 1-component, 32-bit floating-point
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 4 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RG32UI:											// 2-component, 32-bit unsigned integer
		case GL_RG32I:											// 2-component, 32-bit signed integer
		case GL_RG32F:											// 2-component, 32-bit floating-point
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 8 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB32UI:										// 3-component, 32-bit unsigned integer
		case GL_RGB32I:											// 3-component, 32-bit signed integer
		case GL_RGB32F:											// 3-component, 32-bit floating-point
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 12 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGBA32UI:										// 4-component, 32-bit unsigned integer
		case GL_RGBA32I:										// 4-component, 32-bit signed integer
		case GL_RGBA32F:										// 4-component, 32-bit floating-point
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 16 * 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;

		//
		// Packed
		//
		case GL_R3_G3_B2:										// 3-component 3:3:2, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB4:											// 3-component 4:4:4, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 12;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB5:											// 3-component 5:5:5, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 16;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB565:											// 3-component 5:6:5, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 16;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB10:											// 3-component 10:10:10, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 32;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB12:											// 3-component 12:12:12, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 36;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGBA2:											// 4-component 2:2:2:2, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGBA4:											// 4-component 4:4:4:4, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 16;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGBA12:											// 4-component 12:12:12:12, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 48;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB5_A1:										// 4-component 5:5:5:1, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 32;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB10_A2:										// 4-component 10:10:10:2, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 32;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_RGB10_A2UI:										// 4-component 10:10:10:2, unsigned integer
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 32;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_R11F_G11F_B10F:									// 3-component 11:11:10, floating-point
		case GL_RGB9_E5:										// 3-component/exp 9:9:9/5, floating-point
			pFormatSize->flags = GL_FORMAT_SIZE_PACKED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 32;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;

		//
		// S3TC/DXT/BC
		//
		case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:					// line through 3D space, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:					// line through 3D space plus 1-bit alpha, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:					// line through 3D space, 4x4 blocks, sRGB
		case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:			// line through 3D space plus 1-bit alpha, 4x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:					// line through 3D space plus line through 1D space, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:					// line through 3D space plus 4-bit alpha, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:			// line through 3D space plus line through 1D space, 4x4 blocks, sRGB
		case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:			// line through 3D space plus 4-bit alpha, 4x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;

		case GL_COMPRESSED_LUMINANCE_LATC1_EXT:					// line through 1D space, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:			// line through 1D space, 4x4 blocks, signed normalized
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:			// two lines through 1D space, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:	// two lines through 1D space, 4x4 blocks, signed normalized
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;

		case GL_COMPRESSED_RED_RGTC1:							// line through 1D space, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SIGNED_RED_RGTC1:					// line through 1D space, 4x4 blocks, signed normalized
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RG_RGTC2:							// two lines through 1D space, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SIGNED_RG_RGTC2:						// two lines through 1D space, 4x4 blocks, signed normalized
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;

		case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:				// 3-component, 4x4 blocks, unsigned floating-point
		case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:				// 3-component, 4x4 blocks, signed floating-point
		case GL_COMPRESSED_RGBA_BPTC_UNORM:						// 4-component, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:				// 4-component, 4x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;

		//
		// ETC
		//
		case GL_ETC1_RGB8_OES:									// 3-component ETC1, 4x4 blocks, unsigned normalized" ),
		case GL_COMPRESSED_RGB8_ETC2:							// 3-component ETC2, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ETC2:							// 3-component ETC2, 4x4 blocks, sRGB
		case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:		// 4-component ETC2 with 1-bit alpha, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:		// 4-component ETC2 with 1-bit alpha, 4x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA8_ETC2_EAC:						// 4-component ETC2, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:				// 4-component ETC2, 4x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;

		case GL_COMPRESSED_R11_EAC:								// 1-component ETC, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SIGNED_R11_EAC:						// 1-component ETC, 4x4 blocks, signed normalized
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RG11_EAC:							// 2-component ETC, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SIGNED_RG11_EAC:						// 2-component ETC, 4x4 blocks, signed normalized
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;

		//
		// PVRTC
		//
		case GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG:				// 3-component PVRTC, 16x8 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT:				// 3-component PVRTC, 16x8 blocks, sRGB
		case GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG:				// 4-component PVRTC, 16x8 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT:			// 4-component PVRTC, 16x8 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 16;
			pFormatSize->blockHeight = 8;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG:				// 3-component PVRTC, 8x8 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT:				// 3-component PVRTC, 8x8 blocks, sRGB
		case GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG:				// 4-component PVRTC, 8x8 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT:			// 4-component PVRTC, 8x8 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 8;
			pFormatSize->blockHeight = 8;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG:				// 4-component PVRTC, 8x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV2_IMG:			// 4-component PVRTC, 8x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 8;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG:				// 4-component PVRTC, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV2_IMG:			// 4-component PVRTC, 4x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;

		//
		// ASTC
		//
		case GL_COMPRESSED_RGBA_ASTC_4x4_KHR:					// 4-component ASTC, 4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR:			// 4-component ASTC, 4x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_5x4_KHR:					// 4-component ASTC, 5x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR:			// 4-component ASTC, 5x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 5;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_5x5_KHR:					// 4-component ASTC, 5x5 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR:			// 4-component ASTC, 5x5 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 5;
			pFormatSize->blockHeight = 5;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_6x5_KHR:					// 4-component ASTC, 6x5 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR:			// 4-component ASTC, 6x5 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 6;
			pFormatSize->blockHeight = 5;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_6x6_KHR:					// 4-component ASTC, 6x6 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR:			// 4-component ASTC, 6x6 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 6;
			pFormatSize->blockHeight = 6;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_8x5_KHR:					// 4-component ASTC, 8x5 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR:			// 4-component ASTC, 8x5 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 8;
			pFormatSize->blockHeight = 5;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_8x6_KHR:					// 4-component ASTC, 8x6 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR:			// 4-component ASTC, 8x6 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 8;
			pFormatSize->blockHeight = 6;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_8x8_KHR:					// 4-component ASTC, 8x8 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR:			// 4-component ASTC, 8x8 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 8;
			pFormatSize->blockHeight = 8;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_10x5_KHR:					// 4-component ASTC, 10x5 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR:			// 4-component ASTC, 10x5 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 10;
			pFormatSize->blockHeight = 5;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_10x6_KHR:					// 4-component ASTC, 10x6 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR:			// 4-component ASTC, 10x6 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 10;
			pFormatSize->blockHeight = 6;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_10x8_KHR:					// 4-component ASTC, 10x8 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR:			// 4-component ASTC, 10x8 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 10;
			pFormatSize->blockHeight = 8;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_10x10_KHR:					// 4-component ASTC, 10x10 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR:			// 4-component ASTC, 10x10 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 10;
			pFormatSize->blockHeight = 10;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_12x10_KHR:					// 4-component ASTC, 12x10 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR:			// 4-component ASTC, 12x10 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 12;
			pFormatSize->blockHeight = 10;
			pFormatSize->blockDepth = 1;
			break;
		case GL_COMPRESSED_RGBA_ASTC_12x12_KHR:					// 4-component ASTC, 12x12 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR:			// 4-component ASTC, 12x12 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 12;
			pFormatSize->blockHeight = 12;
			pFormatSize->blockDepth = 1;
			break;

		case GL_COMPRESSED_RGBA_ASTC_3x3x3_OES:					// 4-component ASTC, 3x3x3 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES:			// 4-component ASTC, 3x3x3 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 3;
			pFormatSize->blockHeight = 3;
			pFormatSize->blockDepth = 3;
			break;
		case GL_COMPRESSED_RGBA_ASTC_4x3x3_OES:					// 4-component ASTC, 4x3x3 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES:			// 4-component ASTC, 4x3x3 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 3;
			pFormatSize->blockDepth = 3;
			break;
		case GL_COMPRESSED_RGBA_ASTC_4x4x3_OES:					// 4-component ASTC, 4x4x3 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES:			// 4-component ASTC, 4x4x3 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 3;
			break;
		case GL_COMPRESSED_RGBA_ASTC_4x4x4_OES:					// 4-component ASTC, 4x4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES:			// 4-component ASTC, 4x4x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 4;
			break;
		case GL_COMPRESSED_RGBA_ASTC_5x4x4_OES:					// 4-component ASTC, 5x4x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES:			// 4-component ASTC, 5x4x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 5;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 4;
			break;
		case GL_COMPRESSED_RGBA_ASTC_5x5x4_OES:					// 4-component ASTC, 5x5x4 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES:			// 4-component ASTC, 5x5x4 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 5;
			pFormatSize->blockHeight = 5;
			pFormatSize->blockDepth = 4;
			break;
		case GL_COMPRESSED_RGBA_ASTC_5x5x5_OES:					// 4-component ASTC, 5x5x5 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES:			// 4-component ASTC, 5x5x5 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 5;
			pFormatSize->blockHeight = 5;
			pFormatSize->blockDepth = 5;
			break;
		case GL_COMPRESSED_RGBA_ASTC_6x5x5_OES:					// 4-component ASTC, 6x5x5 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES:			// 4-component ASTC, 6x5x5 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 6;
			pFormatSize->blockHeight = 5;
			pFormatSize->blockDepth = 5;
			break;
		case GL_COMPRESSED_RGBA_ASTC_6x6x5_OES:					// 4-component ASTC, 6x6x5 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES:			// 4-component ASTC, 6x6x5 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 6;
			pFormatSize->blockHeight = 6;
			pFormatSize->blockDepth = 5;
			break;
		case GL_COMPRESSED_RGBA_ASTC_6x6x6_OES:					// 4-component ASTC, 6x6x6 blocks, unsigned normalized
		case GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES:			// 4-component ASTC, 6x6x6 blocks, sRGB
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 6;
			pFormatSize->blockHeight = 6;
			pFormatSize->blockDepth = 6;
			break;

		//
		// ATC
		//
		case GL_ATC_RGB_AMD:									// 3-component, 4x4 blocks, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;
		case GL_ATC_RGBA_EXPLICIT_ALPHA_AMD:					// 4-component, 4x4 blocks, unsigned normalized
		case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:				// 4-component, 4x4 blocks, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_COMPRESSED_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 128;
			pFormatSize->blockWidth = 4;
			pFormatSize->blockHeight = 4;
			pFormatSize->blockDepth = 1;
			break;

		//
		// Palletized
		//
		case GL_PALETTE4_RGB8_OES:								// 3-component 8:8:8,   4-bit palette, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PALETTIZED_BIT;
			pFormatSize->paletteSizeInBits = 16 * 24;
			pFormatSize->blockSizeInBits = 4;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_PALETTE4_RGBA8_OES:								// 4-component 8:8:8:8, 4-bit palette, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PALETTIZED_BIT;
			pFormatSize->paletteSizeInBits = 16 * 32;
			pFormatSize->blockSizeInBits = 4;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_PALETTE4_R5_G6_B5_OES:							// 3-component 5:6:5,   4-bit palette, unsigned normalized
		case GL_PALETTE4_RGBA4_OES:								// 4-component 4:4:4:4, 4-bit palette, unsigned normalized
		case GL_PALETTE4_RGB5_A1_OES:							// 4-component 5:5:5:1, 4-bit palette, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PALETTIZED_BIT;
			pFormatSize->paletteSizeInBits = 16 * 16;
			pFormatSize->blockSizeInBits = 4;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_PALETTE8_RGB8_OES:								// 3-component 8:8:8,   8-bit palette, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PALETTIZED_BIT;
			pFormatSize->paletteSizeInBits = 256 * 24;
			pFormatSize->blockSizeInBits = 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_PALETTE8_RGBA8_OES:								// 4-component 8:8:8:8, 8-bit palette, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PALETTIZED_BIT;
			pFormatSize->paletteSizeInBits = 256 * 32;
			pFormatSize->blockSizeInBits = 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_PALETTE8_R5_G6_B5_OES:							// 3-component 5:6:5,   8-bit palette, unsigned normalized
		case GL_PALETTE8_RGBA4_OES:								// 4-component 4:4:4:4, 8-bit palette, unsigned normalized
		case GL_PALETTE8_RGB5_A1_OES:							// 4-component 5:5:5:1, 8-bit palette, unsigned normalized
			pFormatSize->flags = GL_FORMAT_SIZE_PALETTIZED_BIT;
			pFormatSize->paletteSizeInBits = 256 * 16;
			pFormatSize->blockSizeInBits = 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;

		//
		// Depth/stencil
		//
		case GL_DEPTH_COMPONENT16:
			pFormatSize->flags = GL_FORMAT_SIZE_DEPTH_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 16;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_DEPTH_COMPONENT24:
		case GL_DEPTH_COMPONENT32:
		case GL_DEPTH_COMPONENT32F:
		case GL_DEPTH_COMPONENT32F_NV:
			pFormatSize->flags = GL_FORMAT_SIZE_DEPTH_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 32;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_STENCIL_INDEX1:
			pFormatSize->flags = GL_FORMAT_SIZE_STENCIL_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 1;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_STENCIL_INDEX4:
			pFormatSize->flags = GL_FORMAT_SIZE_STENCIL_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 4;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_STENCIL_INDEX8:
			pFormatSize->flags = GL_FORMAT_SIZE_STENCIL_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_STENCIL_INDEX16:
			pFormatSize->flags = GL_FORMAT_SIZE_STENCIL_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 16;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_DEPTH24_STENCIL8:
			pFormatSize->flags = GL_FORMAT_SIZE_DEPTH_BIT | GL_FORMAT_SIZE_STENCIL_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 32;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
		case GL_DEPTH32F_STENCIL8:
		case GL_DEPTH32F_STENCIL8_NV:
			pFormatSize->flags = GL_FORMAT_SIZE_DEPTH_BIT | GL_FORMAT_SIZE_STENCIL_BIT;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 64;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;

		default:
			pFormatSize->flags = 0;
			pFormatSize->paletteSizeInBits = 0;
			pFormatSize->blockSizeInBits = 8;
			pFormatSize->blockWidth = 1;
			pFormatSize->blockHeight = 1;
			pFormatSize->blockDepth = 1;
			break;
	}
}

#endif // !GL_FORMAT_H
]#