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gimp/plug-ins/file-dds/formats.c

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/*
* DDS GIMP plugin
*
* Copyright (C) 2004-2012 Shawn Kirst <skirst@gmail.com>,
* with parts (C) 2003 Arne Reuter <homepage@arnereuter.de> where specified.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <libgimp/gimp.h>
#include "dds.h"
#include "formats.h"
/* Table that determines how uncompressed D3D9 and DXGI formats are read and parsed */
static const fmt_read_info_t format_read_info[] =
{/*|D3D Format |DXGI Format |Order |Channel Bits |bpp|Alpha |Float |Signed|GIMP Type */
{ D3DFMT_R8G8B8, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 8, 8, 8, 0}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_A8R8G8B8, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_X8R8G8B8, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 8, 8, 8, 8}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_R5G6B5, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 5, 6, 5, 0}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_X1R5G5B5, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 5, 5, 5, 1}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_A1R5G5B5, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 5, 5, 5, 1}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_A4R4G4B4, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 4, 4, 4, 4}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_R3G3B2, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 2, 3, 3, 0}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_A8, DXGI_FORMAT_UNKNOWN, {3,2,1,0}, { 8, 0, 0, 0}, 8, TRUE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_A8R3G3B2, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 2, 3, 3, 8}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_X4R4G4B4, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, { 4, 4, 4, 4}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_A2B10G10R10, DXGI_FORMAT_UNKNOWN, {2,1,0,3}, {10,10,10, 2}, 16, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_A8B8G8R8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_X8B8G8R8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, { 8, 8, 8, 8}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_G16R16, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {16,16, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_A2R10G10B10, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {10,10,10, 2}, 16, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_A16B16G16R16, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {16,16,16,16}, 16, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_A8P8, DXGI_FORMAT_UNKNOWN, {0,3,2,1}, { 8, 8, 0, 0}, 8, TRUE, FALSE, FALSE, GIMP_INDEXED },
{ D3DFMT_P8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, { 8, 0, 0, 0}, 8, FALSE, FALSE, FALSE, GIMP_INDEXED },
{ D3DFMT_L8, DXGI_FORMAT_UNKNOWN, {0,3,2,1}, { 8, 0, 0, 0}, 8, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_A8L8, DXGI_FORMAT_UNKNOWN, {0,3,2,1}, { 8, 8, 0, 0}, 8, TRUE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_A4L4, DXGI_FORMAT_UNKNOWN, {0,3,2,1}, { 4, 4, 0, 0}, 8, TRUE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_V8U8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, { 8, 8, 0, 0}, 8, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_L6V5U5, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, { 5, 5, 6, 0}, 8, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_X8L8V8U8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, { 8, 8, 8, 8}, 8, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_Q8W8V8U8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_V16U16, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {16,16, 0, 0}, 16, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_A2W10V10U10, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {10,10,10, 2}, 16, TRUE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_D16_LOCKABLE, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {16, 0, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_D32, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {32, 0, 0, 0}, 32, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_D15S1, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {15, 1, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_D24S8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {24, 8, 0, 0}, 32, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_D24X8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {24, 8, 0, 0}, 32, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_D24X4S4, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {24, 4, 4, 0}, 32, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_D16, DXGI_FORMAT_UNKNOWN, {1,0,2,3}, {16, 0, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_L16, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {16, 0, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_D32F_LOCKABLE, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {32, 0, 0, 0}, 32, FALSE, TRUE, TRUE, GIMP_GRAY },
{ D3DFMT_D24FS8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {24, 8, 0, 0}, 32, FALSE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_D32_LOCKABLE, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {32, 0, 0, 0}, 32, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_S8_LOCKABLE, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, { 8, 0, 0, 0}, 8, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_Q16W16V16U16, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {16,16,16,16}, 16, TRUE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_R16F, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {16, 0, 0, 0}, 16, FALSE, TRUE, TRUE, GIMP_GRAY },
{ D3DFMT_G16R16F, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {16,16, 0, 0}, 16, FALSE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_A16B16G16R16F, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {16,16,16,16}, 16, TRUE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_R32F, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {32, 0, 0, 0}, 32, FALSE, TRUE, TRUE, GIMP_GRAY },
{ D3DFMT_G32R32F, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {32,32, 0, 0}, 32, FALSE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_A32B32G32R32F, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, {32,32,32,32}, 32, TRUE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_CxV8U8, DXGI_FORMAT_UNKNOWN, {0,1,2,3}, { 8, 8, 0, 0}, 8, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_A1, DXGI_FORMAT_UNKNOWN, {3,2,1,0}, { 1, 0, 0, 0}, 8, TRUE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32G32B32A32_FLOAT, {0,1,2,3}, {32,32,32,32}, 32, TRUE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32G32B32A32_UINT, {0,1,2,3}, {32,32,32,32}, 32, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32G32B32A32_SINT, {0,1,2,3}, {32,32,32,32}, 32, TRUE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32G32B32_FLOAT, {0,1,2,3}, {32,32,32, 0}, 32, FALSE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32G32B32_UINT, {0,1,2,3}, {32,32,32, 0}, 32, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32G32B32_SINT, {0,1,2,3}, {32,32,32, 0}, 32, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16B16A16_FLOAT, {0,1,2,3}, {16,16,16,16}, 16, TRUE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16B16A16_UNORM, {0,1,2,3}, {16,16,16,16}, 16, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16B16A16_UINT, {0,1,2,3}, {16,16,16,16}, 16, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16B16A16_SNORM, {0,1,2,3}, {16,16,16,16}, 16, TRUE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16B16A16_SINT, {0,1,2,3}, {16,16,16,16}, 16, TRUE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32G32_FLOAT, {0,1,2,3}, {32,32, 0, 0}, 32, FALSE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32G32_UINT, {0,1,2,3}, {32,32, 0, 0}, 32, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32G32_SINT, {0,1,2,3}, {32,32, 0, 0}, 32, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_D32_FLOAT_S8X24_UINT, {0,1,2,3}, {32, 8,24, 0}, 32, FALSE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R10G10B10A2_UNORM, {0,1,2,3}, {10,10,10, 2}, 16, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R10G10B10A2_UINT, {0,1,2,3}, {10,10,10, 2}, 16, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R11G11B10_FLOAT, {0,1,2,3}, {11,11,10, 0}, 16, FALSE, TRUE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8G8B8A8_UNORM, {0,1,2,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8G8B8A8_UNORM_SRGB, {0,1,2,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8G8B8A8_UINT, {0,1,2,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8G8B8A8_SNORM, {0,1,2,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8G8B8A8_SINT, {0,1,2,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16_FLOAT, {0,1,2,3}, {16,16, 0, 0}, 16, FALSE, TRUE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16_UNORM, {0,1,2,3}, {16,16, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16_UINT, {0,1,2,3}, {16,16, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16_SNORM, {0,1,2,3}, {16,16, 0, 0}, 16, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16G16_SINT, {0,1,2,3}, {16,16, 0, 0}, 16, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_D32_FLOAT, {0,1,2,3}, {32, 0, 0, 0}, 32, FALSE, TRUE, TRUE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32_FLOAT, {0,1,2,3}, {32, 0, 0, 0}, 32, FALSE, TRUE, TRUE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32_UINT, {0,1,2,3}, {32, 0, 0, 0}, 32, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R32_SINT, {0,1,2,3}, {32, 0, 0, 0}, 32, FALSE, FALSE, TRUE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_D24_UNORM_S8_UINT, {0,1,2,3}, {24, 8, 0, 0}, 32, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8G8_UNORM, {0,1,2,3}, { 8, 8, 0, 0}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8G8_UINT, {0,1,2,3}, { 8, 8, 0, 0}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8G8_SNORM, {0,1,2,3}, { 8, 8, 0, 0}, 8, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8G8_SINT, {0,1,2,3}, { 8, 8, 0, 0}, 8, FALSE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16_FLOAT, {0,1,2,3}, {16, 0, 0, 0}, 16, FALSE, TRUE, TRUE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_D16_UNORM, {0,1,2,3}, {16, 0, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16_UNORM, {0,1,2,3}, {16, 0, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16_UINT, {0,1,2,3}, {16, 0, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16_SNORM, {0,1,2,3}, {16, 0, 0, 0}, 16, FALSE, FALSE, TRUE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16_SINT, {0,1,2,3}, {16, 0, 0, 0}, 16, FALSE, FALSE, TRUE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8_UNORM, {0,1,2,3}, { 8, 0, 0, 0}, 8, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8_UINT, {0,1,2,3}, { 8, 0, 0, 0}, 8, FALSE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8_SNORM, {0,1,2,3}, { 8, 0, 0, 0}, 8, FALSE, FALSE, TRUE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R8_SINT, {0,1,2,3}, { 8, 0, 0, 0}, 8, FALSE, FALSE, TRUE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_A8_UNORM, {3,2,1,0}, { 8, 0, 0, 0}, 8, TRUE, FALSE, FALSE, GIMP_GRAY },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R9G9B9E5_SHAREDEXP, {0,1,2,3}, { 9, 9, 9, 5}, 32, FALSE, TRUE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_B5G6R5_UNORM, {0,1,2,3}, { 5, 6, 5, 0}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_B5G5R5A1_UNORM, {0,1,2,3}, { 5, 5, 5, 1}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_B8G8R8A8_UNORM, {2,1,0,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_B8G8R8X8_UNORM, {2,1,0,3}, { 8, 8, 8, 8}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_B8G8R8A8_UNORM_SRGB, {2,1,0,3}, { 8, 8, 8, 8}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_B8G8R8X8_UNORM_SRGB, {2,1,0,3}, { 8, 8, 8, 8}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_P8, {0,1,2,3}, { 8, 0, 0, 0}, 8, FALSE, FALSE, FALSE, GIMP_INDEXED },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_A8P8, {0,1,2,3}, { 8, 8, 0, 0}, 8, TRUE, FALSE, FALSE, GIMP_INDEXED },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_B4G4R4A4_UNORM, {2,1,0,3}, { 4, 4, 4, 4}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R10G10B10_7E3_A2_FLOAT, {0,1,2,3}, {10,10,10, 2}, 32, TRUE, TRUE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R10G10B10_6E4_A2_FLOAT, {0,1,2,3}, {10,10,10, 2}, 32, TRUE, TRUE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_D16_UNORM_S8_UINT, {0,1,2,3}, {16, 8, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R16_UNORM_X8_TYPELESS, {0,1,2,3}, {16, 8, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_X16_TYPELESS_G8_UINT, {0,1,2,3}, {16, 8, 0, 0}, 16, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R10G10B10_SNORM_A2_UNORM, {0,1,2,3}, {10,10,10, 2}, 16, TRUE, FALSE, TRUE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_R4G4_UNORM, {0,1,2,3}, { 4, 4, 0, 0}, 8, FALSE, FALSE, FALSE, GIMP_RGB },
{ D3DFMT_UNKNOWN, DXGI_FORMAT_A4B4G4R4_UNORM, {3,2,1,0}, { 4, 4, 4, 4}, 8, TRUE, FALSE, FALSE, GIMP_RGB },
};
#define FORMAT_READ_INFO_COUNT (sizeof (format_read_info) / sizeof (fmt_read_info_t))
/* Table for mapping bpp, mask, and flag values to D3D9 format codes */
static struct _FMT_MAP
{
D3DFORMAT d3d9_format;
gint bpp;
guint rmask;
guint gmask;
guint bmask;
guint amask;
guint flags;
} format_map[] =
{/*|D3D Format |bpp|R Mask |G Mask |B Mask |A Mask |Flags */
{ D3DFMT_R8G8B8, 24, 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000, DDPF_RGB },
{ D3DFMT_A8R8G8B8, 32, 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000, DDPF_RGB | DDPF_ALPHAPIXELS },
{ D3DFMT_X8R8G8B8, 32, 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000, DDPF_RGB },
{ D3DFMT_R5G6B5, 16, 0x0000F800, 0x000007E0, 0x0000001F, 0x00000000, DDPF_RGB },
{ D3DFMT_X1R5G5B5, 16, 0x00007C00, 0x000003E0, 0x0000001F, 0x00000000, DDPF_RGB },
{ D3DFMT_A1R5G5B5, 16, 0x00007C00, 0x000003E0, 0x0000001F, 0x00008000, DDPF_RGB | DDPF_ALPHAPIXELS },
{ D3DFMT_A4R4G4B4, 16, 0x00000F00, 0x000000F0, 0x0000000F, 0x0000F000, DDPF_RGB | DDPF_ALPHAPIXELS },
{ D3DFMT_R3G3B2, 8, 0x000000E0, 0x0000001C, 0x00000003, 0x00000000, DDPF_RGB },
{ D3DFMT_A8, 8, 0x00000000, 0x00000000, 0x00000000, 0x000000FF, DDPF_ALPHA },
{ D3DFMT_A8R3G3B2, 16, 0x000000E0, 0x0000001C, 0x00000003, 0x0000FF00, DDPF_RGB | DDPF_ALPHAPIXELS },
{ D3DFMT_X4R4G4B4, 16, 0x00000F00, 0x000000F0, 0x0000000F, 0x00000000, DDPF_RGB },
{ D3DFMT_A2B10G10R10, 32, 0x000003FF, 0x000FFC00, 0x3FF00000, 0xC0000000, DDPF_RGB | DDPF_ALPHAPIXELS },
{ D3DFMT_A8B8G8R8, 32, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000, DDPF_RGB | DDPF_ALPHAPIXELS },
{ D3DFMT_X8B8G8R8, 32, 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000, DDPF_RGB },
{ D3DFMT_G16R16, 32, 0x0000FFFF, 0xFFFF0000, 0x00000000, 0x00000000, DDPF_RGB },
{ D3DFMT_A2R10G10B10, 32, 0x3FF00000, 0x000FFC00, 0x000003FF, 0xC0000000, DDPF_RGB | DDPF_ALPHAPIXELS },
{ D3DFMT_A8P8, 16, 0x00000000, 0x00000000, 0x00000000, 0x0000FF00, DDPF_PALETTEINDEXED8 | DDPF_ALPHAPIXELS },
{ D3DFMT_P8, 8, 0x00000000, 0x00000000, 0x00000000, 0x00000000, DDPF_PALETTEINDEXED8 },
{ D3DFMT_L8, 8, 0x000000FF, 0x00000000, 0x00000000, 0x00000000, DDPF_LUMINANCE },
{ D3DFMT_A8L8, 16, 0x000000FF, 0x00000000, 0x00000000, 0x0000FF00, DDPF_LUMINANCE | DDPF_ALPHAPIXELS },
{ D3DFMT_A4L4, 8, 0x0000000F, 0x00000000, 0x00000000, 0x000000F0, DDPF_LUMINANCE | DDPF_ALPHAPIXELS },
{ D3DFMT_UNKNOWN, 16, 0x000000FF, 0x0000FF00, 0x00000000, 0x00000000, DDPF_RGB },
{ D3DFMT_V8U8, 16, 0x000000FF, 0x0000FF00, 0x00000000, 0x00000000, DDPF_BUMPDUDV },
{ D3DFMT_L6V5U5, 16, 0x0000001F, 0x000003E0, 0x0000FC00, 0x00000000, DDPF_BUMPLUMINANCE },
{ D3DFMT_X8L8V8U8, 32, 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000, DDPF_BUMPLUMINANCE },
{ D3DFMT_Q8W8V8U8, 32, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000, DDPF_BUMPDUDV },
{ D3DFMT_V16U16, 32, 0x0000FFFF, 0xFFFF0000, 0x00000000, 0x00000000, DDPF_BUMPDUDV },
{ D3DFMT_A2W10V10U10, 32, 0x3FF00000, 0x000FFC00, 0x000003FF, 0xC0000000, DDPF_BUMPDUDV | DDPF_ALPHAPIXELS },
{ D3DFMT_D16_LOCKABLE, 16, 0x00000000, 0x0000FFFF, 0x00000000, 0x00000000, DDPF_ZBUFFER },
{ D3DFMT_L16, 16, 0x0000FFFF, 0x00000000, 0x00000000, 0x00000000, DDPF_LUMINANCE },
/* NVTT v1 wrote these with DDPF_RGB instead of DDPF_LUMINANCE */
{ D3DFMT_L8, 8, 0x000000FF, 0x00000000, 0x00000000, 0x00000000, DDPF_RGB },
{ D3DFMT_A8L8, 16, 0x000000FF, 0x00000000, 0x00000000, 0x0000FF00, DDPF_RGB | DDPF_ALPHAPIXELS },
{ D3DFMT_L16, 16, 0x0000FFFF, 0x00000000, 0x00000000, 0x00000000, DDPF_RGB },
};
#define FORMAT_MAP_COUNT (sizeof (format_map) / sizeof (format_map[0]))
/*
* Get D3DFORMAT code that matches input bpp, masks, and flags
*/
guint
get_d3d9format (guint bpp,
guint rmask,
guint gmask,
guint bmask,
guint amask,
guint flags)
{
for (gint i = 0; i < FORMAT_MAP_COUNT; i++)
{
if (format_map[i].bpp == bpp &&
format_map[i].rmask == rmask &&
format_map[i].gmask == gmask &&
format_map[i].bmask == bmask &&
format_map[i].amask == amask &&
(format_map[i].flags & flags) == format_map[i].flags)
{
return format_map[i].d3d9_format;
}
}
return D3DFMT_UNKNOWN;
}
/*
* Check that uncompressed DXGI format is supported
*/
gboolean
dxgiformat_supported (guint hdr_dxgifmt)
{
for (gint i = 0; i < FORMAT_READ_INFO_COUNT; i++)
{
if (format_read_info[i].dxgi_format == hdr_dxgifmt)
{
return TRUE;
}
}
return FALSE;
}
/*
* Get read info from D3D9 or DXGI format code
*/
fmt_read_info_t
get_format_read_info (guint d3d9_fmt,
guint dxgi_fmt)
{
gint index = 0;
for (gint i = 0; i < FORMAT_READ_INFO_COUNT; i++)
{
if ((d3d9_fmt && (format_read_info[i].d3d9_format == d3d9_fmt)) ||
(dxgi_fmt && (format_read_info[i].dxgi_format == dxgi_fmt)))
{
index = i;
break;
}
}
return format_read_info[index];
}
/*
* Convert integer component from input size to output size (up to 32 bits)
* Brute-force high-precision float method for minimum possible error
*/
guint32
requantize_component (guint32 bits,
guchar size_in,
guchar size_out)
{
if (size_in == size_out)
return bits;
return (guint) ((gdouble) bits * ((gdouble) ((1ULL << size_out) - 1)
/ (gdouble) ((1ULL << size_in ) - 1)) + 0.5);
}
/* Special float handling for R9G9B9E5
* https://microsoft.github.io/DirectX-Specs/d3d/archive/D3D11_3_FunctionalSpec.htm
*/
void
float_from_9e5 (guint32 channels[4])
{
for (gint ch = 0; ch < 3; ch++)
{
gfloat val_f = (gfloat) exp2 ((gdouble) ((gint32) channels[3] - 15))
* ((gdouble) channels[ch] / exp2 (9.0));
memcpy (&channels[ch], &val_f, 4);
}
}
/* Special float handling for R10G10B10_7E3_A2
* https://github.com/microsoft/DirectXTex/blob/main/DirectXTex/DirectXTexConvert.cpp
*/
void
float_from_7e3a2 (guint32 channels[4])
{
gint64 mantissa;
gint64 exponent;
gfloat alpha;
for (gint ch = 0; ch < 3; ch++)
{
mantissa = channels[ch] & 0x0000007F;
exponent = channels[ch] & 0x00000380;
if (exponent != 0) /* The value is normalized */
{
exponent = (channels[ch] >> 7) & 0x00000007;
}
else if (mantissa != 0) /* The value is denormalized */
{
/* Normalize the value in the resulting float */
exponent = 1;
do
{
exponent--;
mantissa <<= 1;
}
while ((mantissa & 0x80) == 0);
mantissa &= 0x7F;
}
else /* The value is zero */
{
exponent = -124;
}
channels[ch] = (guint32) (((exponent + 124) << 23) | (mantissa << 16));
}
alpha = (gfloat) channels[3] * (1.0f / 3.0f);
memcpy (&channels[3], &alpha, 4);
}
/* Special float handling for R10G10B10_6E4_A2
* https://github.com/microsoft/DirectXTex/blob/main/DirectXTex/DirectXTexConvert.cpp
*/
void
float_from_6e4a2 (guint32 channels[4])
{
gint64 mantissa;
gint64 exponent;
gfloat alpha;
for (gint ch = 0; ch < 3; ch++)
{
mantissa = channels[ch] & 0x0000003F;
exponent = channels[ch] & 0x000003C0;
if (exponent != 0) /* The value is normalized */
{
exponent = (channels[ch] >> 6) & 0x0000000F;
}
else if (mantissa != 0) /* The value is denormalized */
{
/* Normalize the value in the resulting float */
exponent = 1;
do
{
exponent--;
mantissa <<= 1;
}
while ((mantissa & 0x40) == 0);
mantissa &= 0x3F;
}
else /* The value is zero */
{
exponent = -120;
}
channels[ch] = (guint32) (((exponent + 120) << 23) | (mantissa << 17));
}
alpha = (gfloat) channels[3] * (1.0f / 3.0f);
memcpy (&channels[3], &alpha, 4);
}
/* Special handling for CxV8U8
* Z-component is reconstructed from X and Y
*/
void
reconstruct_z (guint32 channels[4])
{
gchar ch_u, ch_v, ch_c;
gfloat ch_uf, ch_vf;
memcpy (&ch_u, &channels[0], 1);
memcpy (&ch_v, &channels[1], 1);
ch_uf = (gfloat) ch_u / 127.0f;
ch_vf = (gfloat) ch_v / 127.0f;
ch_c = (gchar) (sqrtf (1.0f - (ch_uf * ch_uf + ch_vf * ch_vf)) * 127.0f);
memcpy (&channels[2], &ch_c, 1);
}
/*
* Get input bits-per-pixel from D3D9 format
*/
gsize
get_bpp_d3d9 (guint fmt)
{
switch (fmt)
{
case D3DFMT_A32B32G32R32F:
return 128;
case D3DFMT_A16B16G16R16:
case D3DFMT_Q16W16V16U16:
case D3DFMT_A16B16G16R16F:
case D3DFMT_G32R32F:
return 64;
case D3DFMT_A8R8G8B8:
case D3DFMT_X8R8G8B8:
case D3DFMT_A2B10G10R10:
case D3DFMT_A8B8G8R8:
case D3DFMT_X8B8G8R8:
case D3DFMT_G16R16:
case D3DFMT_A2R10G10B10:
case D3DFMT_Q8W8V8U8:
case D3DFMT_V16U16:
case D3DFMT_X8L8V8U8:
case D3DFMT_A2W10V10U10:
case D3DFMT_D32:
case D3DFMT_D24S8:
case D3DFMT_D24X8:
case D3DFMT_D24X4S4:
case D3DFMT_D32F_LOCKABLE:
case D3DFMT_D24FS8:
case D3DFMT_INDEX32:
case D3DFMT_G16R16F:
case D3DFMT_R32F:
case D3DFMT_D32_LOCKABLE:
return 32;
case D3DFMT_R8G8B8:
return 24;
case D3DFMT_A4R4G4B4:
case D3DFMT_X4R4G4B4:
case D3DFMT_R5G6B5:
case D3DFMT_L16:
case D3DFMT_A8L8:
case D3DFMT_X1R5G5B5:
case D3DFMT_A1R5G5B5:
case D3DFMT_A8R3G3B2:
case D3DFMT_V8U8:
case D3DFMT_CxV8U8:
case D3DFMT_L6V5U5:
case D3DFMT_D16_LOCKABLE:
case D3DFMT_D15S1:
case D3DFMT_D16:
case D3DFMT_INDEX16:
case D3DFMT_R16F:
return 16;
case D3DFMT_R3G3B2:
case D3DFMT_A8:
case D3DFMT_A8P8:
case D3DFMT_P8:
case D3DFMT_L8:
case D3DFMT_A4L4:
case D3DFMT_S8_LOCKABLE:
return 8;
case D3DFMT_A1:
return 1;
default:
return 0;
}
}
/*
* Get input bits-per-pixel from DXGI format
*/
gsize
get_bpp_dxgi (guint fmt)
{
switch (fmt)
{
case DXGI_FORMAT_R32G32B32A32_TYPELESS:
case DXGI_FORMAT_R32G32B32A32_FLOAT:
case DXGI_FORMAT_R32G32B32A32_UINT:
case DXGI_FORMAT_R32G32B32A32_SINT:
return 128;
case DXGI_FORMAT_R32G32B32_TYPELESS:
case DXGI_FORMAT_R32G32B32_FLOAT:
case DXGI_FORMAT_R32G32B32_UINT:
case DXGI_FORMAT_R32G32B32_SINT:
return 96;
case DXGI_FORMAT_R16G16B16A16_TYPELESS:
case DXGI_FORMAT_R16G16B16A16_FLOAT:
case DXGI_FORMAT_R16G16B16A16_UNORM:
case DXGI_FORMAT_R16G16B16A16_UINT:
case DXGI_FORMAT_R16G16B16A16_SNORM:
case DXGI_FORMAT_R16G16B16A16_SINT:
case DXGI_FORMAT_R32G32_TYPELESS:
case DXGI_FORMAT_R32G32_FLOAT:
case DXGI_FORMAT_R32G32_UINT:
case DXGI_FORMAT_R32G32_SINT:
case DXGI_FORMAT_R32G8X24_TYPELESS:
case DXGI_FORMAT_D32_FLOAT_S8X24_UINT:
case DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS:
case DXGI_FORMAT_X32_TYPELESS_G8X24_UINT:
case DXGI_FORMAT_Y416:
case DXGI_FORMAT_Y210:
case DXGI_FORMAT_Y216:
return 64;
case DXGI_FORMAT_R10G10B10A2_TYPELESS:
case DXGI_FORMAT_R10G10B10A2_UNORM:
case DXGI_FORMAT_R10G10B10A2_UINT:
case DXGI_FORMAT_R11G11B10_FLOAT:
case DXGI_FORMAT_R8G8B8A8_TYPELESS:
case DXGI_FORMAT_R8G8B8A8_UNORM:
case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
case DXGI_FORMAT_R8G8B8A8_UINT:
case DXGI_FORMAT_R8G8B8A8_SNORM:
case DXGI_FORMAT_R8G8B8A8_SINT:
case DXGI_FORMAT_R16G16_TYPELESS:
case DXGI_FORMAT_R16G16_FLOAT:
case DXGI_FORMAT_R16G16_UNORM:
case DXGI_FORMAT_R16G16_UINT:
case DXGI_FORMAT_R16G16_SNORM:
case DXGI_FORMAT_R16G16_SINT:
case DXGI_FORMAT_R32_TYPELESS:
case DXGI_FORMAT_D32_FLOAT:
case DXGI_FORMAT_R32_FLOAT:
case DXGI_FORMAT_R32_UINT:
case DXGI_FORMAT_R32_SINT:
case DXGI_FORMAT_R24G8_TYPELESS:
case DXGI_FORMAT_D24_UNORM_S8_UINT:
case DXGI_FORMAT_R24_UNORM_X8_TYPELESS:
case DXGI_FORMAT_X24_TYPELESS_G8_UINT:
case DXGI_FORMAT_R9G9B9E5_SHAREDEXP:
case DXGI_FORMAT_R8G8_B8G8_UNORM:
case DXGI_FORMAT_G8R8_G8B8_UNORM:
case DXGI_FORMAT_B8G8R8A8_UNORM:
case DXGI_FORMAT_B8G8R8X8_UNORM:
case DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM:
case DXGI_FORMAT_B8G8R8A8_TYPELESS:
case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
case DXGI_FORMAT_B8G8R8X8_TYPELESS:
case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
case DXGI_FORMAT_AYUV:
case DXGI_FORMAT_Y410:
case DXGI_FORMAT_YUY2:
case DXGI_FORMAT_R10G10B10_7E3_A2_FLOAT:
case DXGI_FORMAT_R10G10B10_6E4_A2_FLOAT:
case DXGI_FORMAT_R10G10B10_SNORM_A2_UNORM:
return 32;
case DXGI_FORMAT_P010:
case DXGI_FORMAT_P016:
case DXGI_FORMAT_D16_UNORM_S8_UINT:
case DXGI_FORMAT_R16_UNORM_X8_TYPELESS:
case DXGI_FORMAT_X16_TYPELESS_G8_UINT:
case DXGI_FORMAT_V408:
return 24;
case DXGI_FORMAT_R8G8_TYPELESS:
case DXGI_FORMAT_R8G8_UNORM:
case DXGI_FORMAT_R8G8_UINT:
case DXGI_FORMAT_R8G8_SNORM:
case DXGI_FORMAT_R8G8_SINT:
case DXGI_FORMAT_R16_TYPELESS:
case DXGI_FORMAT_R16_FLOAT:
case DXGI_FORMAT_D16_UNORM:
case DXGI_FORMAT_R16_UNORM:
case DXGI_FORMAT_R16_UINT:
case DXGI_FORMAT_R16_SNORM:
case DXGI_FORMAT_R16_SINT:
case DXGI_FORMAT_B5G6R5_UNORM:
case DXGI_FORMAT_B5G5R5A1_UNORM:
case DXGI_FORMAT_A8P8:
case DXGI_FORMAT_B4G4R4A4_UNORM:
case DXGI_FORMAT_P208:
case DXGI_FORMAT_V208:
case DXGI_FORMAT_A4B4G4R4_UNORM:
return 16;
case DXGI_FORMAT_NV12:
case DXGI_FORMAT_420_OPAQUE:
case DXGI_FORMAT_NV11:
return 12;
case DXGI_FORMAT_R8_TYPELESS:
case DXGI_FORMAT_R8_UNORM:
case DXGI_FORMAT_R8_UINT:
case DXGI_FORMAT_R8_SNORM:
case DXGI_FORMAT_R8_SINT:
case DXGI_FORMAT_A8_UNORM:
case DXGI_FORMAT_BC2_TYPELESS:
case DXGI_FORMAT_BC2_UNORM:
case DXGI_FORMAT_BC2_UNORM_SRGB:
case DXGI_FORMAT_BC3_TYPELESS:
case DXGI_FORMAT_BC3_UNORM:
case DXGI_FORMAT_BC3_UNORM_SRGB:
case DXGI_FORMAT_BC5_TYPELESS:
case DXGI_FORMAT_BC5_UNORM:
case DXGI_FORMAT_BC5_SNORM:
case DXGI_FORMAT_BC6H_TYPELESS:
case DXGI_FORMAT_BC6H_UF16:
case DXGI_FORMAT_BC6H_SF16:
case DXGI_FORMAT_BC7_TYPELESS:
case DXGI_FORMAT_BC7_UNORM:
case DXGI_FORMAT_BC7_UNORM_SRGB:
case DXGI_FORMAT_AI44:
case DXGI_FORMAT_IA44:
case DXGI_FORMAT_P8:
case DXGI_FORMAT_R4G4_UNORM:
return 8;
case DXGI_FORMAT_BC1_TYPELESS:
case DXGI_FORMAT_BC1_UNORM:
case DXGI_FORMAT_BC1_UNORM_SRGB:
case DXGI_FORMAT_BC4_TYPELESS:
case DXGI_FORMAT_BC4_UNORM:
case DXGI_FORMAT_BC4_SNORM:
return 4;
case DXGI_FORMAT_R1_UNORM:
return 1;
default:
return 0;
}
}
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