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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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Appendix: How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 19yy <name of author>
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 2 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
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
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Gnomovision version 69, Copyright (C) 19yy name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
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You should also get your employer (if you work as a programmer) or your
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necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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/*
DDS PIKA plugin
Copyright (C) 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 2 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; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA.
*/

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// Copyright (c) 2009-2011 Ignacio Castano <castano@gmail.com>
// Copyright (c) 2007-2009 NVIDIA Corporation -- Ignacio Castano <icastano@nvidia.com>
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.

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DDS plugin for The PIKA
(C) 2004-2012 Shawn Kirst <skirst@gmail.com>,
with parts (C) 2003 Arne Reuter <homepage@arnereuter.de> where specified.
==========================================
This is a plugin for PIKA version 2.4.x. It allows you to load and save
images in Direct Draw Surface (DDS) format.
Features
==========================================
* Load/Save DDS files using DXT texture compression
* Automatic mipmap generation on save
* Load mipmaps into separate layers
* Load cube map faces and volume map slices into separate layers
* Cube and volume map saving
* Pixel conversion selection for custom formats (RGBA4, R5G6B5, RGB10A2, etc.)
* Load/save DDS files, optionally using DirectX texture compression (DXT)
* Optional automatic mipmap generation when saving
* Load mipmaps into separate layers
* Load cube map faces and volume map slices into separate layers
* Save cube maps and volume maps with automatic mipmap generation support
* Save image with a custom pixel format
* Non-power-of-two image loading and saving support with automatic mipmap generation support
* Compliant with DirectX 10 compressed formats
Installation
==========================================
See the file INSTALL for installation instructions

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The following notes are from an email I received from Fabian 'ryg' Giesen. They
should help answer some questions regarding the code found in dxt.c
---
mul8bit: This formula is equivalent to (a*b)/255 for a fairly large set of
values (didn't bother finding out the exact bounds). It's a fairly well-known
trick also used in other parts of the PIKA codebase (among others) and was
first documented by Jim Blinn, I think. A good reference is his book "Dirty
Pixels".
---
lerp_rgb: The expression computed is exactly equivalent to mul8bit(a[i],255-f)
+ mul8bit(b[i],f) - I just verified that by brute force for -255 <= b[i]-a[i]
<= 255 because I couldn't be bothered to find a derivation for this :) . You
customarily use a factor between 0 and 256 include for LERPing if you can, but
normal DXT blocks have colors placed at 1/3 and 2/3 between the two
interpolated colors. 255 is divisible by 3, so lerp_rgb can later be used in
eval_colors to determine the result of
a*(1/3) + b*(2/3) and a*(2/3) + b*(1/3)
exactly, which is nice :)
---
dither_block: This is just Floyd-Steinberg dithering. Distributing the error
terms to the adjacent pixels for each source pixel is the customary variant to
write this, but since blocks are so small, it's nearly all boundary
cases; "gathering" the error terms per source pixel turned out to be simpler.
---
match_colors_block: This includes a few tricks. We want to map each source
color to its nearest representable color (index), using the euclidean distance
as a metric.
The obvious, brute-force way is to just compare squared distances to the 4
representable colors for each source pixel (using, for example,
color_distance); this requires a lot of arithmetic operations.
Instead, the code uses the fact that the 4 colors lie on a line in RGB space
(only approximately in truth, since we have discrete steps). It's a well-known
fact in geometry that if P is the closest point to the line L in 3D space, and
Q is the point closest to P on L, then (P-Q) is orthogonal to the direction of
L. So (in R3 at least), we can simply determine Q by projecting P onto the
direction vector of L, which is done by the 16 dot products in the first for
loop. Since the RGB values have discrete steps in reality, this is just an
approximation, but a quite good one.
The loop after that determines where the 4 actually representable colors lie
along the line. After that, you simply need to determine which of those 4
values your current pixel's dot product is closest to. Instead of doing a
bunch of comparisons per pixel, the code computes the points along the line
at which the decision would change (that's c0pt, halfpt and c3pt). This would
still require 3 comparisons; by testing the middle point - which is halfpt -
first, one point is always excluded from consideration, which reduces the
number of compares to two in all cases. No big deal, but hey, why not :)
Similarly, instead of dithering full RGB values, I just dither the dot product
values. Again, by my experiments this works just as well and reduces the
amount of work significantly.
---
optimize_colors_block: This first determines min/max/mean for r,g,b and the
covariance matrix for the color distribution. The latter is used to determine
the principal component (=eigenvector with largest eigenvalue) of that color
distribution, or the direction along which the colors in the block vary most
(in layman's terms) - the eigenvector is determined using simple power
iteration (a standard technique). That iteration needs a seed vector; I just
use (max_r-min_r,max_g-min_g,max_b-min_b), which works well in practice. If
the iteration converges to a vector with very small magnitude (or zero), which
can happen sometimes, it just defaults to an approximation of the YCbCr Y
vector (scaled appropriately to make sure no precision is lost with the dot
products).
This is then used as an initial approximation for the direction of the line
through RGB color space that is used to select colors for that block. It
simply uses the two most extreme points along that axis as the two colors
stored in the block.
---
refine_block: This takes a block and a chosen set of color indices, and tries
to determine the optimal endpoints for these indices (i.e. the full process
is: take block, use color distribution to get rough estimate of optimal
direction, assign color indices accordingly, use these to get better
endpoints, assign indices again). The computation just solves a least-squares
system to minimize the square error between the actual pixels and the
interpolated colors (solving for the two extremal colors). The least-squares
computation turns out to boil down to solving a 2x2 system of linear equations
for each of the RGB color channels; the actual solution is computed using
Cramer's rule.
The code is somewhat weird (especially the "prods"/"akku" thing), but that's
just to reduce the amount of computation done (this piece of code is a hot
spot, so it's worth it).
The (!yy || !xx || xx * yy == xy*xy) part checks whether the system of linear
equations is degenerate. After pondering about this some months ago, I found
out that the only case in which this can ever happen is when all pixels of the
source block get mapped to the same color value. But that case can be handled
better in any case, by just using the single-color lookup tables. I've
attached the new version of refine_block using that observation - it both
increases performance (a bit) and image quality, so it's pretty neat.
---
encode_alpha_block_DXT5: The only thing that shouldn't be obvious is the index
computation. This just uses some two's complement arithmetic and bit shuffling
to avoid computing
7 * (in_alpha - min_alpha) / (max_alpha - min_alpha)
which would be more expensive. (The extra calc with idx is just because of the
weird DXT color numbering).
---
Some more notes on the general flow:
The computation without dithering is just as I explained in the part about
refine_block:
1. Calc initial endpoints directly from block colors
2. Determine color indices for these endpoints
3. Optimize endpoints given color indices
4. Determine new color indices given optimized endpoints
With dithering, there's a twist: The first two steps are done using a version
of the block dithered to colors that are representable using 16-bit 565 RGB
values. I've found that this significantly improves visual quality with
dithering; if you don't do this, the colors inside a block typically vary too
little for dithering to be useful. This process decreases objective quality
but typically looks notably better.
The single-color match (omatch5/omatch6) trick: If the block only contains a
single color (or, for the improved version of refine_block, if the color
values are sufficiently close to all map to the same index), an optimal
solution can be used instead.
You normally want solid-color blocks to map to solid-color block (because
dithering patterns are very obvious otherwise). This means that all color
indices for the block are going to be identical, i.e. all 0, 1, 2 or 3. All-0
is symmetrical to all-1 (with the endpoints flipped), and all-2 is symmetrical
to all-3 (again with the endpoints flipped). So you only need to consider
all-0 or all-2 indices for the block. Furthermore, all-0 means that the first
endpoint specified in the block gets used for all pixels; you can get the same
result by setting both endpoints to the same value and using index 2 for
everything.
In short, you can always set all indices to 2 without sacrificing any quality
whatsoever. For any of the color components R,G,B, you then want to determine
5-bit or 6-bit values a and b such that
expand[a]*(2/3) + expand[b]*(1/3) is as close as possible to R/G/B
and that's exactly what's in omatch5 (for 5-bit values) and omatch6 (for 6-bit
values).
If you use the 3-color+transparency mode of DXT1, you need separate versions
for omatch5/omatch6 for this case, since the interpolated value is exactly
halfway between the two endpoints instead of 1/3 of the way along. But I
recommend against that mode, because even if your top-level mipmap has 1-bit
transparency, mipmaps will have more than 2 distinct values, and the DXT mode
is selected per texture. That's why my original code doesn't support the
3-color mode of DXT1 at all: I don't think it's useful in practice.
Not sure if all of this is useful to you or not, but I guess it might make
sense to at least put this in a separate text file or whatever, because
otherwise it's really quite hard to see what's going on in some places.
Cheers,
-Fabian "ryg" Giesen

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TODO list for future releases of pika-dds:
* Add support for DX10 DDS extensions
* BC6H and BC7 compression support
* Volume map compression support (VTC)
* Add support for PIKA 2.6.x GEGL for reading and writing higher precision
pixel formats

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/*
* DDS PIKA 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 2 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; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301, USA.
*/
#include <math.h>
#include "color.h"
int
linear_to_sRGB(int c)
{
float v = (float)c / 255.0f;
if(v < 0)
v = 0;
else if(v > 1)
v = 1;
else if(v <= 0.0031308f)
v = 12.92f * v;
else
v = 1.055f * powf(v, 0.41666f) - 0.055f;
return (int)floorf(255.0f * v + 0.5f);
}
int
sRGB_to_linear(int c)
{
float v = (float)c / 255.0f;
if(v < 0)
v = 0;
else if(v > 1)
v = 1;
else if(v <= 0.04045f)
v /= 12.92f;
else
v = powf((v + 0.055f) / 1.055f, 2.4f);
return (int)floorf(255.0f * v + 0.5f);
}

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/*
* DDS PIKA 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/>.
*/
#ifndef __COLOR_H__
#define __COLOR_H__
#include "imath.h"
/* sRGB encoding/decoding */
int linear_to_sRGB(int c);
int sRGB_to_linear(int c);
/* YCoCg encoding */
static inline void
RGB_to_YCoCg (unsigned char *dst, int r, int g, int b)
{
int y = ((r + (g << 1) + b) + 2) >> 2;
int co = ((((r << 1) - (b << 1)) + 2) >> 2) + 128;
int cg = (((-r + (g << 1) - b) + 2) >> 2) + 128;
dst[0] = 255;
dst[1] = (cg > 255 ? 255 : (cg < 0 ? 0 : cg));
dst[2] = (co > 255 ? 255 : (co < 0 ? 0 : co));
dst[3] = (y > 255 ? 255 : (y < 0 ? 0 : y));
}
/* other color conversions */
static inline int
rgb_to_luminance (int r, int g, int b)
{
/* ITU-R BT.709 luma coefficients, scaled by 256 */
return ((r * 54 + g * 182 + b * 20) + 128) >> 8;
}
static inline unsigned short
pack_r5g6b5 (int r, int g, int b)
{
return (mul8bit(r, 31) << 11) |
(mul8bit(g, 63) << 5) |
(mul8bit(b, 31) );
}
static inline unsigned short
pack_rgba4 (int r, int g, int b, int a)
{
return (mul8bit(a, 15) << 12) |
(mul8bit(r, 15) << 8) |
(mul8bit(g, 15) << 4) |
(mul8bit(b, 15) );
}
static inline unsigned short
pack_rgb5a1 (int r, int g, int b, int a)
{
return (((a >> 7) & 0x01) << 15) |
(mul8bit(r, 31) << 10) |
(mul8bit(g, 31) << 5) |
(mul8bit(b, 31) );
}
static inline unsigned char
pack_r3g3b2(int r, int g, int b)
{
return (mul8bit(r, 7) << 5) |
(mul8bit(g, 7) << 2) |
(mul8bit(b, 3) );
}
static inline unsigned int
pack_rgb10a2 (int r, int g, int b, int a)
{
return ((unsigned int)((a >> 6) & 0x003) << 30) |
((unsigned int)((b << 2) & 0x3ff) << 20) |
((unsigned int)((g << 2) & 0x3ff) << 10) |
((unsigned int)((r << 2) & 0x3ff) );
}
#endif /* __COLOR_H__ */

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/*
* DDS PIKA 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 2 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; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include <libpika/pika.h>
#include <libpika/pikaui.h>
#include <libpika/stdplugins-intl.h>
#include "dds.h"
#include "ddsread.h"
#include "ddswrite.h"
#include "misc.h"
#define LOAD_PROC "file-dds-load"
#define SAVE_PROC "file-dds-save"
#define DECODE_YCOCG_PROC "color-decode-ycocg"
#define DECODE_YCOCG_SCALED_PROC "color-decode-ycocg-scaled"
#define DECODE_ALPHA_EXP_PROC "color-decode-alpha-exp"
typedef struct _Dds Dds;
typedef struct _DdsClass DdsClass;
struct _Dds
{
PikaPlugIn parent_instance;
};
struct _DdsClass
{
PikaPlugInClass parent_class;
};
#define DDS_TYPE (dds_get_type ())
#define DDS (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), DDS_TYPE, Dds))
GType dds_get_type (void) G_GNUC_CONST;
static GList * dds_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * dds_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * dds_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
const PikaValueArray *args,
gpointer run_data);
static PikaValueArray * dds_save (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GFile *file,
const PikaValueArray *args,
gpointer run_data);
#if 0
static PikaValueArray * dds_decode (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
const PikaValueArray *args,
gpointer run_data);
#endif
G_DEFINE_TYPE (Dds, dds, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (DDS_TYPE)
DEFINE_STD_SET_I18N
static void
dds_class_init (DdsClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = dds_query_procedures;
plug_in_class->create_procedure = dds_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
dds_init (Dds *dds)
{
}
static GList *
dds_query_procedures (PikaPlugIn *plug_in)
{
GList *list = NULL;
list = g_list_append (list, g_strdup (LOAD_PROC));
list = g_list_append (list, g_strdup (SAVE_PROC));
#if 0
list = g_list_append (list, g_strdup (DECODE_YCOCG_PROC));
list = g_list_append (list, g_strdup (DECODE_YCOCG_SCALED_PROC));
list = g_list_append (list, g_strdup (DECODE_ALPHA_EXP_PROC));
#endif
return list;
}
static PikaProcedure *
dds_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, LOAD_PROC))
{
procedure = pika_load_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
dds_load, NULL, NULL);
pika_procedure_set_menu_label (procedure, _("DDS image"));
pika_procedure_set_documentation (procedure,
_("Loads files in DDS image format"),
_("Loads files in DDS image format"),
name);
pika_procedure_set_attribution (procedure,
"Shawn Kirst",
"Shawn Kirst",
"2008");
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"image/dds");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"dds");
pika_file_procedure_set_magics (PIKA_FILE_PROCEDURE (procedure),
"0,string,DDS");
PIKA_PROC_ARG_BOOLEAN (procedure, "load-mipmaps",
_("Load _mipmaps"),
_("Load mipmaps if present"),
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "decode-images",
_("Automatically decode YCoCg/AE_xp images when detected"),
_("Decode YCoCg/AExp images when detected"),
TRUE,
G_PARAM_READWRITE);
}
else if (! strcmp (name, SAVE_PROC))
{
procedure = pika_save_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
dds_save, NULL, NULL);
pika_procedure_set_image_types (procedure, "INDEXED, GRAY, RGB");
pika_procedure_set_menu_label (procedure, _("DDS image"));
pika_procedure_set_documentation (procedure,
"Saves files in DDS image format",
"Saves files in DDS image format",
name);
pika_procedure_set_attribution (procedure,
"Shawn Kirst",
"Shawn Kirst",
"2008");
pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
"image/dds");
pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
"dds");
PIKA_PROC_ARG_INT (procedure, "compression-format",
"Compression format",
"Compression format (0 = None, 1 = BC1/DXT1, "
"2 = BC2/DXT3, 3 = BC3/DXT5, 4 = BC3n/DXT5nm, "
"5 = BC4/ATI1N, 6 = BC5/ATI2N, 7 = RXGB (DXT5), "
"8 = Alpha Exponent (DXT5), 9 = YCoCg (DXT5), "
"10 = YCoCg scaled (DXT5))",
0, 10, DDS_COMPRESS_NONE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "mipmaps",
"Mipmaps",
"How to handle mipmaps (0 = No mipmaps, "
"1 = Generate mipmaps, "
"2 = Use existing mipmaps (layers)",
0, 2, DDS_MIPMAP_NONE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "save-type",
"Save type",
"How to save the image (0 = selected layer, "
"1 = cube map, 2 = volume map, 3 = texture array, "
"4 = all visible layers)",
0, 4, DDS_SAVE_SELECTED_LAYER,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "format",
"Format",
"Pixel format (0 = default, 1 = DDS_FORMAT_RGB8, "
"2 = DDS_FORMAT_RGBA8, 3 = DDS_FORMAT_BGR8, "
"4 = DDS_FORMAT_ABGR8, 5 = DDS_FORMAT_R5G6B5, "
"6 = DDS_FORMAT_RGBA4, 7 = DDS_FORMAT_RGB5A1, "
"8 = DDS_FORMAT_RGB10A2, 9 = DDS_FORMAT_R3G3B2, "
"10 = DDS_FORMAT_A8, 11 = DDS_FORMAT_L8, "
"12 = DDS_FORMAT_L8A8, 13 = DDS_FORMAT_AEXP, "
"14 = DDS_FORMAT_YCOCG)",
0, 14, DDS_FORMAT_DEFAULT,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "flip-image",
"Flip image vertically",
"Flip the image vertically on export",
FALSE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "transparent-color",
"Transparent color",
"Make an indexed color transparent",
FALSE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "transparent-index",
"Transparent index",
"Index of transparent color or -1 to disable "
"(for indexed images only).",
0, 255, 0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "mipmap-filter",
"Mipmap filter",
"Filtering to use when generating mipmaps "
"(0 = default, 1 = nearest, 2 = box, 3 = triangle, "
"4 = quadratic, 5 = bspline, 6 = mitchell, "
"7 = lanczos, 8 = kaiser)",
0, 8, DDS_MIPMAP_FILTER_DEFAULT,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "mipmap-wrap",
"Mipmap wrap",
"Wrap mode to use when generating mipmaps "
"(0 = default, 1 = mirror, 2 = repeat, 3 = clamp)",
0, 3, DDS_MIPMAP_WRAP_DEFAULT,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "gamma-correct",
"Gamma correct",
"Use gamma correct mipmap filtering",
FALSE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "srgb",
"sRGB",
"Use sRGB colorspace for gamma correction",
FALSE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_DOUBLE (procedure, "gamma",
"Gamma",
"Gamma value to use for gamma correction (i.e. 2.2)",
0.0, 10.0, 0.0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "perceptual-metric",
"Perceptual metric",
"Use a perceptual error metric during compression",
FALSE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "preserve-alpha-coverage",
"Preserve alpha coverage",
"Preserve alpha test converage for alpha "
"channel maps",
FALSE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_DOUBLE (procedure, "alpha-test-threshold",
"Alpha test threshold",
"Alpha test threshold value for which alpha test "
"converage should be preserved",
0.0, 1.0, 0.5,
G_PARAM_READWRITE);
}
#if 0
else if (! strcmp (name, DECODE_YCOCG_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
dds_decode, NULL, NULL);
pika_procedure_set_image_types (procedure, "RGBA");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE);
pika_procedure_set_menu_label (procedure, _("Decode YCoCg"));
/* pika_procedure_add_menu_path (procedure, "<Image>/Filters/Colors"); */
pika_procedure_set_documentation (procedure,
_("Converts YCoCg encoded pixels to RGB"),
_("Converts YCoCg encoded pixels to RGB"),
name);
pika_procedure_set_attribution (procedure,
"Shawn Kirst",
"Shawn Kirst",
"2008");
}
else if (! strcmp (name, DECODE_YCOCG_SCALED_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
dds_decode, NULL, NULL);
pika_procedure_set_image_types (procedure, "RGBA");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE);
pika_procedure_set_menu_label (procedure, _("Decode YCoCg (scaled)"));
/* pika_procedure_add_menu_path (procedure, "<Image>/Filters/Colors"); */
pika_procedure_set_documentation (procedure,
_("Converts YCoCg (scaled) encoded "
"pixels to RGB"),
_("Converts YCoCg (scaled) encoded "
"pixels to RGB"),
name);
pika_procedure_set_attribution (procedure,
"Shawn Kirst",
"Shawn Kirst",
"2008");
}
else if (! strcmp (name, DECODE_ALPHA_EXP_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
dds_decode, NULL, NULL);
pika_procedure_set_image_types (procedure, "RGBA");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE);
pika_procedure_set_menu_label (procedure, _("Decode Alpha exponent"));
/* pika_procedure_add_menu_path (procedure, "<Image>/Filters/Colors"); */
pika_procedure_set_documentation (procedure,
_("Converts alpha exponent encoded "
"pixels to RGB",
_("Converts alpha exponent encoded "
"pixels to RGB"),
name);
pika_procedure_set_attribution (procedure,
"Shawn Kirst",
"Shawn Kirst",
"2008");
}
#endif
return procedure;
}
static PikaValueArray *
dds_load (PikaProcedure *procedure,
PikaRunMode run_mode,
GFile *file,
const PikaValueArray *args,
gpointer run_data)
{
PikaProcedureConfig *config;
PikaValueArray *return_vals;
PikaPDBStatusType status;
PikaImage *image;
GError *error = NULL;
gegl_init (NULL, NULL);
config = pika_procedure_create_config (procedure);
pika_procedure_config_begin_run (config, NULL, run_mode, args);
status = read_dds (file, &image, run_mode == PIKA_RUN_INTERACTIVE,
procedure, G_OBJECT (config), &error);
pika_procedure_config_end_run (config, status);
g_object_unref (config);
if (status != PIKA_PDB_SUCCESS)
return pika_procedure_new_return_values (procedure, status, error);
return_vals = pika_procedure_new_return_values (procedure,
PIKA_PDB_SUCCESS,
NULL);
PIKA_VALUES_SET_IMAGE (return_vals, 1, image);
return return_vals;
}
static PikaValueArray *
dds_save (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
GFile *file,
const PikaValueArray *args,
gpointer run_data)
{
PikaProcedureConfig *config;
PikaPDBStatusType status = PIKA_PDB_SUCCESS;
PikaExportReturn export = PIKA_EXPORT_CANCEL;
GError *error = NULL;
gdouble gamma;
gegl_init (NULL, NULL);
config = pika_procedure_create_config (procedure);
pika_procedure_config_begin_run (config, NULL, run_mode, args);
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
case PIKA_RUN_WITH_LAST_VALS:
pika_ui_init ("dds");
export = pika_export_image (&image, &n_drawables, &drawables, "DDS",
PIKA_EXPORT_CAN_HANDLE_RGB |
PIKA_EXPORT_CAN_HANDLE_GRAY |
PIKA_EXPORT_CAN_HANDLE_INDEXED |
PIKA_EXPORT_CAN_HANDLE_ALPHA |
PIKA_EXPORT_CAN_HANDLE_LAYERS);
if (export == PIKA_EXPORT_CANCEL)
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CANCEL,
NULL);
break;
default:
break;
}
g_object_get (config,
"gamma", &gamma,
NULL);
/* pika_gamma () got removed and was always returning 2.2 anyway.
* XXX Review this piece of code if we expect gamma value could be
* parameterized.
*/
if (gamma < 1e-04f)
g_object_set (config,
"gamma", 2.2,
NULL);
/* TODO: support multiple-layers selection, especially as DDS has
* DDS_SAVE_SELECTED_LAYER option support.
*/
status = write_dds (file, image, drawables[0],
run_mode == PIKA_RUN_INTERACTIVE,
procedure, G_OBJECT (config),
export == PIKA_EXPORT_EXPORT);
if (export == PIKA_EXPORT_EXPORT)
{
pika_image_delete (image);
g_free (drawables);
}
pika_procedure_config_end_run (config, status);
g_object_unref (config);
return pika_procedure_new_return_values (procedure, status, error);
}
#if 0
static PikaValueArray *
dds_decode (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
const PikaValueArray *args,
gpointer run_data)
{
const gchar *name = pika_procedure_get_name (procedure);
PikaDrawable *drawable,
if (n_drawables != 1)
{
GError *error = NULL;
g_set_error (&error, PIKA_PLUG_IN_ERROR, 0,
_("Procedure '%s' only works with one drawable."),
name);
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
error);
}
else
{
drawable = drawables[0];
}
if (! strcmp (name, DECODE_YCOCG_PROC))
{
decode_ycocg_image (drawable, TRUE);
}
else if (! strcmp (name, DECODE_YCOCG_SCALED_PROC))
{
decode_ycocg_scaled_image (drawable, TRUE);
}
else if (! strcmp (name, DECODE_ALPHA_EXP_PROC))
{
decode_alpha_exp_image (drawable, TRUE);
}
if (run_mode != PIKA_RUN_NONINTERACTIVE)
pika_displays_flush ();
return pika_procedure_new_return_values (procedure, PIKA_PDB_SUCCESS, NULL);
}
#endif

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/*
* DDS PIKA 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/>.
*/
#ifndef __DDS_H__
#define __DDS_H__
#define DDS_PLUGIN_VERSION_MAJOR 3
#define DDS_PLUGIN_VERSION_MINOR 9
#define DDS_PLUGIN_VERSION_REVISION 92
#define DDS_PLUGIN_VERSION \
((guint) (DDS_PLUGIN_VERSION_MAJOR << 16) | \
(guint) (DDS_PLUGIN_VERSION_MINOR << 8) | \
(guint) (DDS_PLUGIN_VERSION_REVISION))
#define FOURCC(a, b, c, d) \
((guint) ((guint)(a) ) | \
((guint)(b) << 8) | \
((guint)(c) << 16) | \
((guint)(d) << 24))
typedef enum
{
DDS_COMPRESS_NONE = 0,
DDS_COMPRESS_BC1, /* DXT1 */
DDS_COMPRESS_BC2, /* DXT3 */
DDS_COMPRESS_BC3, /* DXT5 */
DDS_COMPRESS_BC3N, /* DXT5n */
DDS_COMPRESS_BC4, /* ATI1 */
DDS_COMPRESS_BC5, /* ATI2 */
DDS_COMPRESS_RXGB, /* DXT5 */
DDS_COMPRESS_AEXP, /* DXT5 */
DDS_COMPRESS_YCOCG, /* DXT5 */
DDS_COMPRESS_YCOCGS, /* DXT5 */
DDS_COMPRESS_MAX
} DDS_COMPRESSION_TYPE;
typedef enum
{
DDS_SAVE_SELECTED_LAYER = 0,
DDS_SAVE_CUBEMAP,
DDS_SAVE_VOLUMEMAP,
DDS_SAVE_ARRAY,
DDS_SAVE_VISIBLE_LAYERS,
DDS_SAVE_MAX
} DDS_SAVE_TYPE;
typedef enum
{
DDS_FORMAT_DEFAULT = 0,
DDS_FORMAT_RGB8,
DDS_FORMAT_RGBA8,
DDS_FORMAT_BGR8,
DDS_FORMAT_ABGR8,
DDS_FORMAT_R5G6B5,
DDS_FORMAT_RGBA4,
DDS_FORMAT_RGB5A1,
DDS_FORMAT_RGB10A2,
DDS_FORMAT_R3G3B2,
DDS_FORMAT_A8,
DDS_FORMAT_L8,
DDS_FORMAT_L8A8,
DDS_FORMAT_AEXP,
DDS_FORMAT_YCOCG,
DDS_FORMAT_MAX
} DDS_FORMAT_TYPE;
typedef enum
{
DDS_MIPMAP_NONE = 0,
DDS_MIPMAP_GENERATE,
DDS_MIPMAP_EXISTING,
DDS_MIPMAP_MAX
} DDS_MIPMAP;
typedef enum
{
DDS_MIPMAP_FILTER_DEFAULT = 0,
DDS_MIPMAP_FILTER_NEAREST,
DDS_MIPMAP_FILTER_BOX,
DDS_MIPMAP_FILTER_TRIANGLE,
DDS_MIPMAP_FILTER_QUADRATIC,
DDS_MIPMAP_FILTER_BSPLINE,
DDS_MIPMAP_FILTER_MITCHELL,
DDS_MIPMAP_FILTER_LANCZOS,
DDS_MIPMAP_FILTER_KAISER,
DDS_MIPMAP_FILTER_MAX
} DDS_MIPMAP_FILTER;
typedef enum
{
DDS_MIPMAP_WRAP_DEFAULT = 0,
DDS_MIPMAP_WRAP_MIRROR,
DDS_MIPMAP_WRAP_REPEAT,
DDS_MIPMAP_WRAP_CLAMP,
DDS_MIPMAP_WRAP_MAX
} DDS_MIPMAP_WRAP;
#define DDS_HEADERSIZE 128
#define DDS_HEADERSIZE_DX10 20
#define DDSD_CAPS 0x00000001
#define DDSD_HEIGHT 0x00000002
#define DDSD_WIDTH 0x00000004
#define DDSD_PITCH 0x00000008
#define DDSD_PIXELFORMAT 0x00001000
#define DDSD_MIPMAPCOUNT 0x00020000
#define DDSD_LINEARSIZE 0x00080000
#define DDSD_DEPTH 0x00800000
#define DDPF_ALPHAPIXELS 0x00000001
#define DDPF_ALPHA 0x00000002
#define DDPF_FOURCC 0x00000004
#define DDPF_PALETTEINDEXED8 0x00000020
#define DDPF_RGB 0x00000040
#define DDPF_LUMINANCE 0x00020000
#define DDPF_NORMAL 0x80000000 // nvidia specific
#define DDSCAPS_COMPLEX 0x00000008
#define DDSCAPS_TEXTURE 0x00001000
#define DDSCAPS_MIPMAP 0x00400000
#define DDSCAPS2_CUBEMAP 0x00000200
#define DDSCAPS2_CUBEMAP_POSITIVEX 0x00000400
#define DDSCAPS2_CUBEMAP_NEGATIVEX 0x00000800
#define DDSCAPS2_CUBEMAP_POSITIVEY 0x00001000
#define DDSCAPS2_CUBEMAP_NEGATIVEY 0x00002000
#define DDSCAPS2_CUBEMAP_POSITIVEZ 0x00004000
#define DDSCAPS2_CUBEMAP_NEGATIVEZ 0x00008000
#define DDSCAPS2_CUBEMAP_ALL_FACES \
(DDSCAPS2_CUBEMAP_POSITIVEX | DDSCAPS2_CUBEMAP_NEGATIVEX | \
DDSCAPS2_CUBEMAP_POSITIVEY | DDSCAPS2_CUBEMAP_NEGATIVEY | \
DDSCAPS2_CUBEMAP_POSITIVEZ | DDSCAPS2_CUBEMAP_NEGATIVEZ)
#define DDSCAPS2_VOLUME 0x00200000
#define D3D10_RESOURCE_MISC_TEXTURECUBE 0x04
#define D3D10_RESOURCE_DIMENSION_BUFFER 1
#define D3D10_RESOURCE_DIMENSION_TEXTURE1D 2
#define D3D10_RESOURCE_DIMENSION_TEXTURE2D 3
#define D3D10_RESOURCE_DIMENSION_TEXTURE3D 4
typedef struct
{
unsigned int size;
unsigned int flags;
char fourcc[4];
unsigned int bpp;
unsigned int rmask;
unsigned int gmask;
unsigned int bmask;
unsigned int amask;
} dds_pixel_format_t;
typedef struct
{
unsigned int caps1;
unsigned int caps2;
unsigned int reserved[2];
} dds_caps_t;
typedef struct
{
unsigned int magic;
unsigned int size;
unsigned int flags;
unsigned int height;
unsigned int width;
unsigned int pitch_or_linsize;
unsigned int depth;
unsigned int num_mipmaps;
union
{
struct
{
unsigned int magic1; // FOURCC "PIKA"
unsigned int magic2; // FOURCC "-DDS"
unsigned int version;
unsigned int extra_fourcc;
} pika_dds_special;
unsigned char pad[4 * 11];
} reserved;
dds_pixel_format_t pixelfmt;
dds_caps_t caps;
unsigned int reserved2;
} dds_header_t;
typedef enum
{
DXGI_FORMAT_UNKNOWN = 0,
DXGI_FORMAT_R32G32B32A32_TYPELESS = 1,
DXGI_FORMAT_R32G32B32A32_FLOAT = 2,
DXGI_FORMAT_R32G32B32A32_UINT = 3,
DXGI_FORMAT_R32G32B32A32_SINT = 4,
DXGI_FORMAT_R32G32B32_TYPELESS = 5,
DXGI_FORMAT_R32G32B32_FLOAT = 6,
DXGI_FORMAT_R32G32B32_UINT = 7,
DXGI_FORMAT_R32G32B32_SINT = 8,
DXGI_FORMAT_R16G16B16A16_TYPELESS = 9,
DXGI_FORMAT_R16G16B16A16_FLOAT = 10,
DXGI_FORMAT_R16G16B16A16_UNORM = 11,
DXGI_FORMAT_R16G16B16A16_UINT = 12,
DXGI_FORMAT_R16G16B16A16_SNORM = 13,
DXGI_FORMAT_R16G16B16A16_SINT = 14,
DXGI_FORMAT_R32G32_TYPELESS = 15,
DXGI_FORMAT_R32G32_FLOAT = 16,
DXGI_FORMAT_R32G32_UINT = 17,
DXGI_FORMAT_R32G32_SINT = 18,
DXGI_FORMAT_R32G8X24_TYPELESS = 19,
DXGI_FORMAT_D32_FLOAT_S8X24_UINT = 20,
DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS = 21,
DXGI_FORMAT_X32_TYPELESS_G8X24_UINT = 22,
DXGI_FORMAT_R10G10B10A2_TYPELESS = 23,
DXGI_FORMAT_R10G10B10A2_UNORM = 24,
DXGI_FORMAT_R10G10B10A2_UINT = 25,
DXGI_FORMAT_R11G11B10_FLOAT = 26,
DXGI_FORMAT_R8G8B8A8_TYPELESS = 27,
DXGI_FORMAT_R8G8B8A8_UNORM = 28,
DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29,
DXGI_FORMAT_R8G8B8A8_UINT = 30,
DXGI_FORMAT_R8G8B8A8_SNORM = 31,
DXGI_FORMAT_R8G8B8A8_SINT = 32,
DXGI_FORMAT_R16G16_TYPELESS = 33,
DXGI_FORMAT_R16G16_FLOAT = 34,
DXGI_FORMAT_R16G16_UNORM = 35,
DXGI_FORMAT_R16G16_UINT = 36,
DXGI_FORMAT_R16G16_SNORM = 37,
DXGI_FORMAT_R16G16_SINT = 38,
DXGI_FORMAT_R32_TYPELESS = 39,
DXGI_FORMAT_D32_FLOAT = 40,
DXGI_FORMAT_R32_FLOAT = 41,
DXGI_FORMAT_R32_UINT = 42,
DXGI_FORMAT_R32_SINT = 43,
DXGI_FORMAT_R24G8_TYPELESS = 44,
DXGI_FORMAT_D24_UNORM_S8_UINT = 45,
DXGI_FORMAT_R24_UNORM_X8_TYPELESS = 46,
DXGI_FORMAT_X24_TYPELESS_G8_UINT = 47,
DXGI_FORMAT_R8G8_TYPELESS = 48,
DXGI_FORMAT_R8G8_UNORM = 49,
DXGI_FORMAT_R8G8_UINT = 50,
DXGI_FORMAT_R8G8_SNORM = 51,
DXGI_FORMAT_R8G8_SINT = 52,
DXGI_FORMAT_R16_TYPELESS = 53,
DXGI_FORMAT_R16_FLOAT = 54,
DXGI_FORMAT_D16_UNORM = 55,
DXGI_FORMAT_R16_UNORM = 56,
DXGI_FORMAT_R16_UINT = 57,
DXGI_FORMAT_R16_SNORM = 58,
DXGI_FORMAT_R16_SINT = 59,
DXGI_FORMAT_R8_TYPELESS = 60,
DXGI_FORMAT_R8_UNORM = 61,
DXGI_FORMAT_R8_UINT = 62,
DXGI_FORMAT_R8_SNORM = 63,
DXGI_FORMAT_R8_SINT = 64,
DXGI_FORMAT_A8_UNORM = 65,
DXGI_FORMAT_R1_UNORM = 66,
DXGI_FORMAT_R9G9B9E5_SHAREDEXP = 67,
DXGI_FORMAT_R8G8_B8G8_UNORM = 68,
DXGI_FORMAT_G8R8_G8B8_UNORM = 69,
DXGI_FORMAT_BC1_TYPELESS = 70,
DXGI_FORMAT_BC1_UNORM = 71,
DXGI_FORMAT_BC1_UNORM_SRGB = 72,
DXGI_FORMAT_BC2_TYPELESS = 73,
DXGI_FORMAT_BC2_UNORM = 74,
DXGI_FORMAT_BC2_UNORM_SRGB = 75,
DXGI_FORMAT_BC3_TYPELESS = 76,
DXGI_FORMAT_BC3_UNORM = 77,
DXGI_FORMAT_BC3_UNORM_SRGB = 78,
DXGI_FORMAT_BC4_TYPELESS = 79,
DXGI_FORMAT_BC4_UNORM = 80,
DXGI_FORMAT_BC4_SNORM = 81,
DXGI_FORMAT_BC5_TYPELESS = 82,
DXGI_FORMAT_BC5_UNORM = 83,
DXGI_FORMAT_BC5_SNORM = 84,
DXGI_FORMAT_B5G6R5_UNORM = 85,
DXGI_FORMAT_B5G5R5A1_UNORM = 86,
DXGI_FORMAT_B8G8R8A8_UNORM = 87,
DXGI_FORMAT_B8G8R8X8_UNORM = 88,
DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM = 89,
DXGI_FORMAT_B8G8R8A8_TYPELESS = 90,
DXGI_FORMAT_B8G8R8A8_UNORM_SRGB = 91,
DXGI_FORMAT_B8G8R8X8_TYPELESS = 92,
DXGI_FORMAT_B8G8R8X8_UNORM_SRGB = 93,
DXGI_FORMAT_BC6H_TYPELESS = 94,
DXGI_FORMAT_BC6H_UF16 = 95,
DXGI_FORMAT_BC6H_SF16 = 96,
DXGI_FORMAT_BC7_TYPELESS = 97,
DXGI_FORMAT_BC7_UNORM = 98,
DXGI_FORMAT_BC7_UNORM_SRGB = 99,
DXGI_FORMAT_AYUV = 100,
DXGI_FORMAT_Y410 = 101,
DXGI_FORMAT_Y416 = 102,
DXGI_FORMAT_NV12 = 103,
DXGI_FORMAT_P010 = 104,
DXGI_FORMAT_P016 = 105,
DXGI_FORMAT_420_OPAQUE = 106,
DXGI_FORMAT_YUY2 = 107,
DXGI_FORMAT_Y210 = 108,
DXGI_FORMAT_Y216 = 109,
DXGI_FORMAT_NV11 = 110,
DXGI_FORMAT_AI44 = 111,
DXGI_FORMAT_IA44 = 112,
DXGI_FORMAT_P8 = 113,
DXGI_FORMAT_A8P8 = 114,
DXGI_FORMAT_B4G4R4A4_UNORM = 115,
DXGI_FORMAT_FORCE_UINT = 0xffffffffUL
} DXGI_FORMAT;
typedef struct
{
DXGI_FORMAT dxgiFormat;
unsigned int resourceDimension;
unsigned int miscFlag;
unsigned int arraySize;
unsigned int reserved;
} dds_header_dx10_t;
#endif /* __DDS_H__ */

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/*
* DDS PIKA 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/>.
*/
#ifndef __DDSREAD_H__
#define __DDSREAD_H__
extern PikaPDBStatusType read_dds (GFile *file,
PikaImage **image,
gboolean interactive,
PikaProcedure *procedure,
GObject *config,
GError **error);
#endif /* __DDSREAD_H__ */

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/*
* DDS PIKA 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/>.
*/
#ifndef __DDSWRITE_H__
#define __DDSWRITE_H__
extern PikaPDBStatusType write_dds (GFile *file,
PikaImage *image,
PikaDrawable *drawable,
gboolean interactive,
PikaProcedure *procedure,
GObject *config,
gboolean is_duplicate_image);
#endif /* __DDSWRITE_H__ */

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/*
* DDS PIKA 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/>.
*/
#ifndef __DXT_H__
#define __DXT_H__
typedef enum dxt_flags_e
{
DXT_BC1 = 1 << 0,
DXT_BC2 = 1 << 1,
DXT_BC3 = 1 << 2,
DXT_PERCEPTUAL = 1 << 3,
} dxt_flags_t;
int dxt_compress (unsigned char *dst,
unsigned char *src,
int format,
unsigned int width,
unsigned int height,
int bpp,
int mipmaps,
int flags);
int dxt_decompress (unsigned char *dst,
unsigned char *src,
int format,
unsigned int size,
unsigned int width,
unsigned int height,
int bpp,
int normals);
#endif /* __DXT_H__ */

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#ifndef __DXT_TABLES_H__
#define __DXT_TABLES_H__
static const unsigned char quantRB[256 + 16] =
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x08,
0x08, 0x08, 0x08, 0x08, 0x08, 0x10, 0x10, 0x10,
0x10, 0x10, 0x10, 0x10, 0x10, 0x18, 0x18, 0x18,
0x18, 0x18, 0x18, 0x18, 0x18, 0x21, 0x21, 0x21,
0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x29, 0x29,
0x29, 0x29, 0x29, 0x29, 0x29, 0x29, 0x31, 0x31,
0x31, 0x31, 0x31, 0x31, 0x31, 0x31, 0x39, 0x39,
0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x42, 0x42,
0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x4a, 0x4a,
0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x4a, 0x52,
0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x52, 0x5a,
0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x6b,
0x6b, 0x6b, 0x6b, 0x6b, 0x6b, 0x6b, 0x6b, 0x6b,
0x73, 0x73, 0x73, 0x73, 0x73, 0x73, 0x73, 0x73,
0x7b, 0x7b, 0x7b, 0x7b, 0x7b, 0x7b, 0x7b, 0x7b,
0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84,
0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c, 0x8c,
0x94, 0x94, 0x94, 0x94, 0x94, 0x94, 0x94, 0x94,
0x94, 0x9c, 0x9c, 0x9c, 0x9c, 0x9c, 0x9c, 0x9c,
0x9c, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
0xa5, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad, 0xad,
0xad, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5, 0xb5,
0xb5, 0xb5, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd,
0xbd, 0xbd, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6,
0xc6, 0xc6, 0xce, 0xce, 0xce, 0xce, 0xce, 0xce,
0xce, 0xce, 0xd6, 0xd6, 0xd6, 0xd6, 0xd6, 0xd6,
0xd6, 0xd6, 0xde, 0xde, 0xde, 0xde, 0xde, 0xde,
0xde, 0xde, 0xde, 0xe7, 0xe7, 0xe7, 0xe7, 0xe7,
0xe7, 0xe7, 0xe7, 0xef, 0xef, 0xef, 0xef, 0xef,
0xef, 0xef, 0xef, 0xf7, 0xf7, 0xf7, 0xf7, 0xf7,
0xf7, 0xf7, 0xf7, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};
static const unsigned char quantG[256 + 16] =
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x08,
0x08, 0x08, 0x08, 0x0c, 0x0c, 0x0c, 0x0c, 0x10,
0x10, 0x10, 0x10, 0x14, 0x14, 0x14, 0x14, 0x18,
0x18, 0x18, 0x18, 0x1c, 0x1c, 0x1c, 0x1c, 0x20,
0x20, 0x20, 0x20, 0x24, 0x24, 0x24, 0x24, 0x28,
0x28, 0x28, 0x28, 0x2c, 0x2c, 0x2c, 0x2c, 0x30,
0x30, 0x30, 0x30, 0x34, 0x34, 0x34, 0x34, 0x38,
0x38, 0x38, 0x38, 0x3c, 0x3c, 0x3c, 0x3c, 0x41,
0x41, 0x41, 0x41, 0x45, 0x45, 0x45, 0x45, 0x49,
0x49, 0x49, 0x49, 0x4d, 0x4d, 0x4d, 0x4d, 0x51,
0x51, 0x51, 0x51, 0x55, 0x55, 0x55, 0x55, 0x55,
0x59, 0x59, 0x59, 0x59, 0x5d, 0x5d, 0x5d, 0x5d,
0x61, 0x61, 0x61, 0x61, 0x65, 0x65, 0x65, 0x65,
0x69, 0x69, 0x69, 0x69, 0x6d, 0x6d, 0x6d, 0x6d,
0x71, 0x71, 0x71, 0x71, 0x75, 0x75, 0x75, 0x75,
0x79, 0x79, 0x79, 0x79, 0x7d, 0x7d, 0x7d, 0x7d,
0x82, 0x82, 0x82, 0x82, 0x86, 0x86, 0x86, 0x86,
0x8a, 0x8a, 0x8a, 0x8a, 0x8e, 0x8e, 0x8e, 0x8e,
0x92, 0x92, 0x92, 0x92, 0x96, 0x96, 0x96, 0x96,
0x9a, 0x9a, 0x9a, 0x9a, 0x9e, 0x9e, 0x9e, 0x9e,
0xa2, 0xa2, 0xa2, 0xa2, 0xa6, 0xa6, 0xa6, 0xa6,
0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xae, 0xae, 0xae,
0xae, 0xb2, 0xb2, 0xb2, 0xb2, 0xb6, 0xb6, 0xb6,
0xb6, 0xba, 0xba, 0xba, 0xba, 0xbe, 0xbe, 0xbe,
0xbe, 0xc3, 0xc3, 0xc3, 0xc3, 0xc7, 0xc7, 0xc7,
0xc7, 0xcb, 0xcb, 0xcb, 0xcb, 0xcf, 0xcf, 0xcf,
0xcf, 0xd3, 0xd3, 0xd3, 0xd3, 0xd7, 0xd7, 0xd7,
0xd7, 0xdb, 0xdb, 0xdb, 0xdb, 0xdf, 0xdf, 0xdf,
0xdf, 0xe3, 0xe3, 0xe3, 0xe3, 0xe7, 0xe7, 0xe7,
0xe7, 0xeb, 0xeb, 0xeb, 0xeb, 0xef, 0xef, 0xef,
0xef, 0xf3, 0xf3, 0xf3, 0xf3, 0xf7, 0xf7, 0xf7,
0xf7, 0xfb, 0xfb, 0xfb, 0xfb, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};
static const unsigned char omatch5[256][2] =
{
{0x00, 0x00}, {0x00, 0x00}, {0x00, 0x01}, {0x00, 0x01},
{0x01, 0x00}, {0x01, 0x00}, {0x01, 0x00}, {0x01, 0x01},
{0x01, 0x01}, {0x01, 0x01}, {0x01, 0x02}, {0x00, 0x04},
{0x02, 0x01}, {0x02, 0x01}, {0x02, 0x01}, {0x02, 0x02},
{0x02, 0x02}, {0x02, 0x02}, {0x02, 0x03}, {0x01, 0x05},
{0x03, 0x02}, {0x03, 0x02}, {0x04, 0x00}, {0x03, 0x03},
{0x03, 0x03}, {0x03, 0x03}, {0x03, 0x04}, {0x03, 0x04},
{0x03, 0x04}, {0x03, 0x05}, {0x04, 0x03}, {0x04, 0x03},
{0x05, 0x02}, {0x04, 0x04}, {0x04, 0x04}, {0x04, 0x05},
{0x04, 0x05}, {0x05, 0x04}, {0x05, 0x04}, {0x05, 0x04},
{0x06, 0x03}, {0x05, 0x05}, {0x05, 0x05}, {0x05, 0x06},
{0x04, 0x08}, {0x06, 0x05}, {0x06, 0x05}, {0x06, 0x05},
{0x06, 0x06}, {0x06, 0x06}, {0x06, 0x06}, {0x06, 0x07},
{0x05, 0x09}, {0x07, 0x06}, {0x07, 0x06}, {0x08, 0x04},
{0x07, 0x07}, {0x07, 0x07}, {0x07, 0x07}, {0x07, 0x08},
{0x07, 0x08}, {0x07, 0x08}, {0x07, 0x09}, {0x08, 0x07},
{0x08, 0x07}, {0x09, 0x06}, {0x08, 0x08}, {0x08, 0x08},
{0x08, 0x09}, {0x08, 0x09}, {0x09, 0x08}, {0x09, 0x08},
{0x09, 0x08}, {0x0a, 0x07}, {0x09, 0x09}, {0x09, 0x09},
{0x09, 0x0a}, {0x08, 0x0c}, {0x0a, 0x09}, {0x0a, 0x09},
{0x0a, 0x09}, {0x0a, 0x0a}, {0x0a, 0x0a}, {0x0a, 0x0a},
{0x0a, 0x0b}, {0x09, 0x0d}, {0x0b, 0x0a}, {0x0b, 0x0a},
{0x0c, 0x08}, {0x0b, 0x0b}, {0x0b, 0x0b}, {0x0b, 0x0b},
{0x0b, 0x0c}, {0x0b, 0x0c}, {0x0b, 0x0c}, {0x0b, 0x0d},
{0x0c, 0x0b}, {0x0c, 0x0b}, {0x0d, 0x0a}, {0x0c, 0x0c},
{0x0c, 0x0c}, {0x0c, 0x0d}, {0x0c, 0x0d}, {0x0d, 0x0c},
{0x0d, 0x0c}, {0x0d, 0x0c}, {0x0e, 0x0b}, {0x0d, 0x0d},
{0x0d, 0x0d}, {0x0d, 0x0e}, {0x0c, 0x10}, {0x0e, 0x0d},
{0x0e, 0x0d}, {0x0e, 0x0d}, {0x0e, 0x0e}, {0x0e, 0x0e},
{0x0e, 0x0e}, {0x0e, 0x0f}, {0x0d, 0x11}, {0x0f, 0x0e},
{0x0f, 0x0e}, {0x10, 0x0c}, {0x0f, 0x0f}, {0x0f, 0x0f},
{0x0f, 0x0f}, {0x0f, 0x10}, {0x0f, 0x10}, {0x0f, 0x10},
{0x0f, 0x11}, {0x10, 0x0f}, {0x10, 0x0f}, {0x11, 0x0e},
{0x10, 0x10}, {0x10, 0x10}, {0x10, 0x11}, {0x10, 0x11},
{0x11, 0x10}, {0x11, 0x10}, {0x11, 0x10}, {0x12, 0x0f},
{0x11, 0x11}, {0x11, 0x11}, {0x11, 0x12}, {0x10, 0x14},
{0x12, 0x11}, {0x12, 0x11}, {0x12, 0x11}, {0x12, 0x12},
{0x12, 0x12}, {0x12, 0x12}, {0x12, 0x13}, {0x11, 0x15},
{0x13, 0x12}, {0x13, 0x12}, {0x14, 0x10}, {0x13, 0x13},
{0x13, 0x13}, {0x13, 0x13}, {0x13, 0x14}, {0x13, 0x14},
{0x13, 0x14}, {0x13, 0x15}, {0x14, 0x13}, {0x14, 0x13},
{0x15, 0x12}, {0x14, 0x14}, {0x14, 0x14}, {0x14, 0x15},
{0x14, 0x15}, {0x15, 0x14}, {0x15, 0x14}, {0x15, 0x14},
{0x16, 0x13}, {0x15, 0x15}, {0x15, 0x15}, {0x15, 0x16},
{0x14, 0x18}, {0x16, 0x15}, {0x16, 0x15}, {0x16, 0x15},
{0x16, 0x16}, {0x16, 0x16}, {0x16, 0x16}, {0x16, 0x17},
{0x15, 0x19}, {0x17, 0x16}, {0x17, 0x16}, {0x18, 0x14},
{0x17, 0x17}, {0x17, 0x17}, {0x17, 0x17}, {0x17, 0x18},
{0x17, 0x18}, {0x17, 0x18}, {0x17, 0x19}, {0x18, 0x17},
{0x18, 0x17}, {0x19, 0x16}, {0x18, 0x18}, {0x18, 0x18},
{0x18, 0x19}, {0x18, 0x19}, {0x19, 0x18}, {0x19, 0x18},
{0x19, 0x18}, {0x1a, 0x17}, {0x19, 0x19}, {0x19, 0x19},
{0x19, 0x1a}, {0x18, 0x1c}, {0x1a, 0x19}, {0x1a, 0x19},
{0x1a, 0x19}, {0x1a, 0x1a}, {0x1a, 0x1a}, {0x1a, 0x1a},
{0x1a, 0x1b}, {0x19, 0x1d}, {0x1b, 0x1a}, {0x1b, 0x1a},
{0x1c, 0x18}, {0x1b, 0x1b}, {0x1b, 0x1b}, {0x1b, 0x1b},
{0x1b, 0x1c}, {0x1b, 0x1c}, {0x1b, 0x1c}, {0x1b, 0x1d},
{0x1c, 0x1b}, {0x1c, 0x1b}, {0x1d, 0x1a}, {0x1c, 0x1c},
{0x1c, 0x1c}, {0x1c, 0x1d}, {0x1c, 0x1d}, {0x1d, 0x1c},
{0x1d, 0x1c}, {0x1d, 0x1c}, {0x1e, 0x1b}, {0x1d, 0x1d},
{0x1d, 0x1d}, {0x1d, 0x1e}, {0x1d, 0x1e}, {0x1e, 0x1d},
{0x1e, 0x1d}, {0x1e, 0x1d}, {0x1e, 0x1e}, {0x1e, 0x1e},
{0x1e, 0x1e}, {0x1e, 0x1f}, {0x1e, 0x1f}, {0x1f, 0x1e},
{0x1f, 0x1e}, {0x1f, 0x1e}, {0x1f, 0x1f}, {0x1f, 0x1f},
};
static const unsigned char omatch6[256][2] =
{
{0x00, 0x00}, {0x00, 0x01}, {0x01, 0x00}, {0x01, 0x01},
{0x01, 0x01}, {0x01, 0x02}, {0x02, 0x01}, {0x02, 0x02},
{0x02, 0x02}, {0x02, 0x03}, {0x03, 0x02}, {0x03, 0x03},
{0x03, 0x03}, {0x03, 0x04}, {0x04, 0x03}, {0x04, 0x04},
{0x04, 0x04}, {0x04, 0x05}, {0x05, 0x04}, {0x05, 0x05},
{0x05, 0x05}, {0x05, 0x06}, {0x06, 0x05}, {0x00, 0x11},
{0x06, 0x06}, {0x06, 0x07}, {0x07, 0x06}, {0x02, 0x10},
{0x07, 0x07}, {0x07, 0x08}, {0x08, 0x07}, {0x03, 0x11},
{0x08, 0x08}, {0x08, 0x09}, {0x09, 0x08}, {0x05, 0x10},
{0x09, 0x09}, {0x09, 0x0a}, {0x0a, 0x09}, {0x06, 0x11},
{0x0a, 0x0a}, {0x0a, 0x0b}, {0x0b, 0x0a}, {0x08, 0x10},
{0x0b, 0x0b}, {0x0b, 0x0c}, {0x0c, 0x0b}, {0x09, 0x11},
{0x0c, 0x0c}, {0x0c, 0x0d}, {0x0d, 0x0c}, {0x0b, 0x10},
{0x0d, 0x0d}, {0x0d, 0x0e}, {0x0e, 0x0d}, {0x0c, 0x11},
{0x0e, 0x0e}, {0x0e, 0x0f}, {0x0f, 0x0e}, {0x0e, 0x10},
{0x0f, 0x0f}, {0x0f, 0x10}, {0x10, 0x0e}, {0x10, 0x0f},
{0x11, 0x0e}, {0x10, 0x10}, {0x10, 0x11}, {0x11, 0x10},
{0x12, 0x0f}, {0x11, 0x11}, {0x11, 0x12}, {0x12, 0x11},
{0x14, 0x0e}, {0x12, 0x12}, {0x12, 0x13}, {0x13, 0x12},
{0x15, 0x0f}, {0x13, 0x13}, {0x13, 0x14}, {0x14, 0x13},
{0x17, 0x0e}, {0x14, 0x14}, {0x14, 0x15}, {0x15, 0x14},
{0x18, 0x0f}, {0x15, 0x15}, {0x15, 0x16}, {0x16, 0x15},
{0x1a, 0x0e}, {0x16, 0x16}, {0x16, 0x17}, {0x17, 0x16},
{0x1b, 0x0f}, {0x17, 0x17}, {0x17, 0x18}, {0x18, 0x17},
{0x13, 0x21}, {0x18, 0x18}, {0x18, 0x19}, {0x19, 0x18},
{0x15, 0x20}, {0x19, 0x19}, {0x19, 0x1a}, {0x1a, 0x19},
{0x16, 0x21}, {0x1a, 0x1a}, {0x1a, 0x1b}, {0x1b, 0x1a},
{0x18, 0x20}, {0x1b, 0x1b}, {0x1b, 0x1c}, {0x1c, 0x1b},
{0x19, 0x21}, {0x1c, 0x1c}, {0x1c, 0x1d}, {0x1d, 0x1c},
{0x1b, 0x20}, {0x1d, 0x1d}, {0x1d, 0x1e}, {0x1e, 0x1d},
{0x1c, 0x21}, {0x1e, 0x1e}, {0x1e, 0x1f}, {0x1f, 0x1e},
{0x1e, 0x20}, {0x1f, 0x1f}, {0x1f, 0x20}, {0x20, 0x1e},
{0x20, 0x1f}, {0x21, 0x1e}, {0x20, 0x20}, {0x20, 0x21},
{0x21, 0x20}, {0x22, 0x1f}, {0x21, 0x21}, {0x21, 0x22},
{0x22, 0x21}, {0x24, 0x1e}, {0x22, 0x22}, {0x22, 0x23},
{0x23, 0x22}, {0x25, 0x1f}, {0x23, 0x23}, {0x23, 0x24},
{0x24, 0x23}, {0x27, 0x1e}, {0x24, 0x24}, {0x24, 0x25},
{0x25, 0x24}, {0x28, 0x1f}, {0x25, 0x25}, {0x25, 0x26},
{0x26, 0x25}, {0x2a, 0x1e}, {0x26, 0x26}, {0x26, 0x27},
{0x27, 0x26}, {0x2b, 0x1f}, {0x27, 0x27}, {0x27, 0x28},
{0x28, 0x27}, {0x23, 0x31}, {0x28, 0x28}, {0x28, 0x29},
{0x29, 0x28}, {0x25, 0x30}, {0x29, 0x29}, {0x29, 0x2a},
{0x2a, 0x29}, {0x26, 0x31}, {0x2a, 0x2a}, {0x2a, 0x2b},
{0x2b, 0x2a}, {0x28, 0x30}, {0x2b, 0x2b}, {0x2b, 0x2c},
{0x2c, 0x2b}, {0x29, 0x31}, {0x2c, 0x2c}, {0x2c, 0x2d},
{0x2d, 0x2c}, {0x2b, 0x30}, {0x2d, 0x2d}, {0x2d, 0x2e},
{0x2e, 0x2d}, {0x2c, 0x31}, {0x2e, 0x2e}, {0x2e, 0x2f},
{0x2f, 0x2e}, {0x2e, 0x30}, {0x2f, 0x2f}, {0x2f, 0x30},
{0x30, 0x2e}, {0x30, 0x2f}, {0x31, 0x2e}, {0x30, 0x30},
{0x30, 0x31}, {0x31, 0x30}, {0x32, 0x2f}, {0x31, 0x31},
{0x31, 0x32}, {0x32, 0x31}, {0x34, 0x2e}, {0x32, 0x32},
{0x32, 0x33}, {0x33, 0x32}, {0x35, 0x2f}, {0x33, 0x33},
{0x33, 0x34}, {0x34, 0x33}, {0x37, 0x2e}, {0x34, 0x34},
{0x34, 0x35}, {0x35, 0x34}, {0x38, 0x2f}, {0x35, 0x35},
{0x35, 0x36}, {0x36, 0x35}, {0x3a, 0x2e}, {0x36, 0x36},
{0x36, 0x37}, {0x37, 0x36}, {0x3b, 0x2f}, {0x37, 0x37},
{0x37, 0x38}, {0x38, 0x37}, {0x3d, 0x2e}, {0x38, 0x38},
{0x38, 0x39}, {0x39, 0x38}, {0x3e, 0x2f}, {0x39, 0x39},
{0x39, 0x3a}, {0x3a, 0x39}, {0x3a, 0x3a}, {0x3a, 0x3a},
{0x3a, 0x3b}, {0x3b, 0x3a}, {0x3b, 0x3b}, {0x3b, 0x3b},
{0x3b, 0x3c}, {0x3c, 0x3b}, {0x3c, 0x3c}, {0x3c, 0x3c},
{0x3c, 0x3d}, {0x3d, 0x3c}, {0x3d, 0x3d}, {0x3d, 0x3d},
{0x3d, 0x3e}, {0x3e, 0x3d}, {0x3e, 0x3e}, {0x3e, 0x3e},
{0x3e, 0x3f}, {0x3f, 0x3e}, {0x3f, 0x3f}, {0x3f, 0x3f},
};
#endif /* __DXT_TABLES_H__ */

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/*
* DDS PIKA 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/>.
*/
#ifndef __ENDIAN_RW_H__
#define __ENDIAN_RW_H__
#define GETL64(buf) \
(((unsigned long long)(buf)[0] ) | \
((unsigned long long)(buf)[1] << 8) | \
((unsigned long long)(buf)[2] << 16) | \
((unsigned long long)(buf)[3] << 24) | \
((unsigned long long)(buf)[4] << 32) | \
((unsigned long long)(buf)[5] << 40) | \
((unsigned long long)(buf)[6] << 48) | \
((unsigned long long)(buf)[7] << 56))
#define GETL32(buf) \
(((unsigned int)(buf)[0] ) | \
((unsigned int)(buf)[1] << 8) | \
((unsigned int)(buf)[2] << 16) | \
((unsigned int)(buf)[3] << 24))
#define GETL24(buf) \
(((unsigned int)(buf)[0] ) | \
((unsigned int)(buf)[1] << 8) | \
((unsigned int)(buf)[2] << 16))
#define GETL16(buf) \
(((unsigned short)(buf)[0] ) | \
((unsigned short)(buf)[1] << 8))
#define PUTL16(buf, s) \
(buf)[0] = ((s) ) & 0xff; \
(buf)[1] = ((s) >> 8) & 0xff;
#define PUTL32(buf, l) \
(buf)[0] = ((l) ) & 0xff; \
(buf)[1] = ((l) >> 8) & 0xff; \
(buf)[2] = ((l) >> 16) & 0xff; \
(buf)[3] = ((l) >> 24) & 0xff;
#define PUTL64(buf, ll) \
(buf)[0] = ((ll) ) & 0xff; \
(buf)[1] = ((ll) >> 8) & 0xff; \
(buf)[2] = ((ll) >> 16) & 0xff; \
(buf)[3] = ((ll) >> 24) & 0xff; \
(buf)[4] = ((ll) >> 32) & 0xff; \
(buf)[5] = ((ll) >> 40) & 0xff; \
(buf)[6] = ((ll) >> 48) & 0xff; \
(buf)[7] = ((ll) >> 56) & 0xff;
#endif /* __ENDIAN_RW_H__ */

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/*
* DDS PIKA 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/>.
*/
#ifndef __IMATH_H__
#define __IMATH_H__
#ifndef MIN
# ifdef __GNUC__
# define MIN(a, b) ({typeof(a) _a=(a); typeof(b) _b=(b); _a < _b ? _a : _b;})
# else
# define MIN(a, b) ((a) < (b) ? (a) : (b))
# endif
#endif
#ifndef MAX
# ifdef __GNUC__
# define MAX(a, b) ({typeof(a) _a=(a); typeof(b) _b=(b); _a > _b ? _a : _b;})
# else
# define MAX(a, b) ((a) > (b) ? (a) : (b))
# endif
#endif
#define IS_POW2(x) (!((x) & ((x) - 1)))
#define IS_MUL4(x) (((x) & 3) == 0)
/* round integer x up to next multiple of 4 */
#define RND_MUL4(x) ((x) + (4 - ((x) & 3)))
static inline int
mul8bit (int a,
int b)
{
int t = a * b + 128;
return (t + (t >> 8)) >> 8;
}
static inline int
blerp (int a,
int b,
int x)
{
return a + mul8bit(b - a, x);
}
static inline int
icerp (int a,
int b,
int c,
int d,
int x)
{
int p = (d - c) - (a - b);
int q = (a - b) - p;
int r = c - a;
return (x * (x * (x * p + (q << 7)) + (r << 14)) + (b << 21)) >> 21;
}
#endif /* __IMATH_H__ */

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plugin_name = 'file-dds'
plugin_sources = [
'dds.c',
'color.c',
'ddsread.c',
'ddswrite.c',
'dxt.c',
'mipmap.c',
'misc.c',
]
if platform_windows
plugin_sources += windows.compile_resources(
pika_plugins_rc,
args: [
'--define', 'ORIGINALFILENAME_STR="@0@"'.format(plugin_name+'.exe'),
'--define', 'INTERNALNAME_STR="@0@"' .format(plugin_name),
'--define', 'TOP_SRCDIR="@0@"' .format(meson.project_source_root()),
],
include_directories: [
rootInclude, appInclude,
],
)
endif
executable(plugin_name,
plugin_sources,
dependencies: [
libpikaui_dep,
math,
openmp,
],
install: true,
install_dir: pikaplugindir / 'plug-ins' / plugin_name,
)

1132
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75
plug-ins/file-dds/mipmap.h Normal file
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/*
* DDS PIKA 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/>.
*/
#ifndef __MIPMAP_H__
#define __MIPMAP_H__
int get_num_mipmaps (int width,
int height);
unsigned int get_mipmapped_size (int width,
int height,
int bpp,
int level,
int num,
int format);
unsigned int get_volume_mipmapped_size (int width,
int height,
int depth,
int bpp,
int level,
int num,
int format);
int get_next_mipmap_dimensions (int *next_w,
int *next_h,
int curr_w,
int curr_h);
float cubic_interpolate (float a,
float b,
float c,
float d,
float x);
int generate_mipmaps (unsigned char *dst,
unsigned char *src,
unsigned int width,
unsigned int height,
int bpp,
int indexed,
int mipmaps,
int filter,
int wrap,
int gamma_correct,
float gamma,
int preserve_alpha_test_coverage,
float alpha_test_threshold);
int generate_volume_mipmaps (unsigned char *dst,
unsigned char *src,
unsigned int width,
unsigned int height,
unsigned int depth,
int bpp,
int indexed,
int mipmaps,
int filter,
int wrap,
int gamma_correct,
float gamma);
#endif /* __MIPMAP_H__ */

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/*
* DDS PIKA 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 2 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; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301, USA.
*/
#include <libpika/pika.h>
#include "misc.h"
static inline float
saturate (float a)
{
if(a < 0) a = 0;
if(a > 1) a = 1;
return a;
}
void
decode_ycocg_image (PikaDrawable *drawable,
gboolean shadow)
{
GeglBuffer *buffer, *sbuffer;
const Babl *format;
unsigned char *data;
unsigned int i, w, h, num_pixels;
const float offset = 0.5f * 256.0f / 255.0f;
float Y, Co, Cg, R, G, B;
buffer = pika_drawable_get_buffer (drawable);
if (shadow)
{
sbuffer = pika_drawable_get_shadow_buffer (drawable);
gegl_buffer_copy (buffer, NULL, GEGL_ABYSS_NONE, sbuffer, NULL);
g_object_unref (buffer);
buffer = sbuffer;
}
format = babl_format ("R'G'B'A u8");
w = gegl_buffer_get_width (buffer);
h = gegl_buffer_get_height (buffer);
num_pixels = w * h;
data = g_malloc (num_pixels * 4);
gegl_buffer_get (buffer, GEGL_RECTANGLE(0, 0, w, h), 1.0, format, data,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
pika_progress_init ("Decoding YCoCg pixels...");
for (i = 0; i < num_pixels; ++i)
{
Y = (float)data[4 * i + 3] / 255.0f;
Co = (float)data[4 * i + 0] / 255.0f;
Cg = (float)data[4 * i + 1] / 255.0f;
/* convert YCoCg to RGB */
Co -= offset;
Cg -= offset;
R = saturate(Y + Co - Cg);
G = saturate(Y + Cg);
B = saturate(Y - Co - Cg);
/* copy new alpha from blue */
data[4 * i + 3] = data[4 * i + 2];
data[4 * i + 0] = (unsigned char)(R * 255.0f);
data[4 * i + 1] = (unsigned char)(G * 255.0f);
data[4 * i + 2] = (unsigned char)(B * 255.0f);
if ((i & 0x7fff) == 0)
pika_progress_update ((float)i / (float)num_pixels);
}
gegl_buffer_set (buffer, GEGL_RECTANGLE(0, 0, w, h), 0, format, data,
GEGL_AUTO_ROWSTRIDE);
pika_progress_update (1.0);
gegl_buffer_flush (buffer);
if (shadow)
pika_drawable_merge_shadow (drawable, TRUE);
pika_drawable_update (drawable, 0, 0, w, h);
g_free (data);
g_object_unref (buffer);
}
void
decode_ycocg_scaled_image (PikaDrawable *drawable,
gboolean shadow)
{
GeglBuffer *buffer, *sbuffer;
const Babl *format;
unsigned char *data;
unsigned int i, w, h, num_pixels;
const float offset = 0.5f * 256.0f / 255.0f;
float Y, Co, Cg, R, G, B, s;
buffer = pika_drawable_get_buffer (drawable);
if (shadow)
{
sbuffer = pika_drawable_get_shadow_buffer (drawable);
gegl_buffer_copy (buffer, NULL, GEGL_ABYSS_NONE, sbuffer, NULL);
g_object_unref (buffer);
buffer = sbuffer;
}
format = babl_format ("R'G'B'A u8");
w = gegl_buffer_get_width (buffer);
h = gegl_buffer_get_height (buffer);
num_pixels = w * h;
data = g_malloc (num_pixels * 4);
gegl_buffer_get (buffer, GEGL_RECTANGLE(0, 0, w, h), 1.0, format, data,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
pika_progress_init ("Decoding YCoCg (scaled) pixels...");
for (i = 0; i < num_pixels; ++i)
{
Y = (float)data[4 * i + 3] / 255.0f;
Co = (float)data[4 * i + 0] / 255.0f;
Cg = (float)data[4 * i + 1] / 255.0f;
s = (float)data[4 * i + 2] / 255.0f;
/* convert YCoCg to RGB */
s = 1.0f / ((255.0f / 8.0f) * s + 1.0f);
Co = (Co - offset) * s;
Cg = (Cg - offset) * s;
R = saturate(Y + Co - Cg);
G = saturate(Y + Cg);
B = saturate(Y - Co - Cg);
data[4 * i + 0] = (unsigned char)(R * 255.0f);
data[4 * i + 1] = (unsigned char)(G * 255.0f);
data[4 * i + 2] = (unsigned char)(B * 255.0f);
/* set alpha to 1 */
data[4 * i + 3] = 255;
if ((i & 0x7fff) == 0)
pika_progress_update ((float)i / (float)num_pixels);
}
gegl_buffer_set (buffer, GEGL_RECTANGLE(0, 0, w, h), 0, format, data,
GEGL_AUTO_ROWSTRIDE);
pika_progress_update (1.0);
gegl_buffer_flush (buffer);
if (shadow)
pika_drawable_merge_shadow (drawable, TRUE);
pika_drawable_update (drawable, 0, 0, w, h);
g_free (data);
g_object_unref (buffer);
}
void
decode_alpha_exp_image (PikaDrawable *drawable,
gboolean shadow)
{
GeglBuffer *buffer, *sbuffer;
const Babl *format;
unsigned char *data;
unsigned int i, w, h, num_pixels;
int R, G, B, A;
buffer = pika_drawable_get_buffer (drawable);
if (shadow)
{
sbuffer = pika_drawable_get_shadow_buffer (drawable);
gegl_buffer_copy (buffer, NULL, GEGL_ABYSS_NONE, sbuffer, NULL);
g_object_unref (buffer);
buffer = sbuffer;
}
format = babl_format ("R'G'B'A u8");
w = gegl_buffer_get_width (buffer);
h = gegl_buffer_get_height (buffer);
num_pixels = w * h;
data = g_malloc (num_pixels * 4);
gegl_buffer_get (buffer, GEGL_RECTANGLE(0, 0, w, h), 1.0, format, data,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
pika_progress_init ("Decoding Alpha-exponent pixels...");
for (i = 0; i < num_pixels; ++i)
{
R = data[4 * i + 0];
G = data[4 * i + 1];
B = data[4 * i + 2];
A = data[4 * i + 3];
R = (R * A + 1) >> 8;
G = (G * A + 1) >> 8;
B = (B * A + 1) >> 8;
A = 255;
data[4 * i + 0] = R;
data[4 * i + 1] = G;
data[4 * i + 2] = B;
data[4 * i + 3] = A;
if ((i & 0x7fff) == 0)
pika_progress_update ((float)i / (float)num_pixels);
}
gegl_buffer_set (buffer, GEGL_RECTANGLE(0, 0, w, h), 0, format, data,
GEGL_AUTO_ROWSTRIDE);
pika_progress_update (1.0);
gegl_buffer_flush (buffer);
if (shadow)
pika_drawable_merge_shadow (drawable, TRUE);
pika_drawable_update (drawable, 0, 0, w, h);
g_free (data);
g_object_unref (buffer);
}

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/*
* DDS PIKA 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/>.
*/
#ifndef __MISC_H__
#define __MISC_H__
void decode_ycocg_image (PikaDrawable *drawable,
gboolean shadow);
void decode_ycocg_scaled_image (PikaDrawable *drawable,
gboolean shadow);
void decode_alpha_exp_image (PikaDrawable *drawable,
gboolean shadow);
#endif /* __MISC_H__ */

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/*
* DDS PIKA 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/>.
*/
#ifndef __VEC_H__
#define __VEC_H__
#include <math.h>
#ifdef __SSE__
#define USE_SSE 1
#endif
#ifdef USE_SSE
#include <immintrin.h>
#endif
#include "imath.h"
typedef float vec4_t __attribute__((vector_size(16)));
typedef float sym3x3_t[6];
#define VEC4_CONST4(x, y, z, w) {x, y, z, w}
#define VEC4_CONST3(x, y, z) {x, y, z, 0.0f}
#define VEC4_CONST1(x) {x, x, x, x}
static inline vec4_t
vec4_set (float x,
float y,
float z,
float w)
{
#ifdef USE_SSE
return _mm_setr_ps(x, y, z, w);
#else
vec4_t v = { x, y, z, w };
return v;
#endif
}
static inline vec4_t
vec4_set1 (float f)
{
#ifdef USE_SSE
return _mm_set1_ps(f);
#else
vec4_t v = { f, f, f, f };
return v;
#endif
}
static inline vec4_t
vec4_zero (void)
{
#ifdef USE_SSE
return _mm_setzero_ps();
#else
vec4_t v = { 0, 0, 0, 0 };
return v;
#endif
}
static inline void
vec4_store (float *f,
const vec4_t v)
{
#ifdef USE_SSE
_mm_store_ps (f, v);
#else
f[0] = v[0]; f[1] = v[1]; f[2] = v[2]; f[3] = v[3];
#endif
}
static inline vec4_t
vec4_splatx (const vec4_t v)
{
#ifdef USE_SSE
return _mm_shuffle_ps(v, v, 0x00);
#else
vec4_t r = { v[0], v[0], v[0], v[0] };
return r;
#endif
}
static inline vec4_t
vec4_splaty (const vec4_t v)
{
#ifdef USE_SSE
return _mm_shuffle_ps(v, v, 0x55);
#else
vec4_t r = { v[1], v[1], v[1], v[1] };
return r;
#endif
}
static inline vec4_t
vec4_splatz (const vec4_t v)
{
#ifdef USE_SSE
return _mm_shuffle_ps(v, v, 0xaa);
#else
vec4_t r = { v[2], v[2], v[2], v[2] };
return r;
#endif
}
static inline vec4_t
vec4_splatw (const vec4_t v)
{
#ifdef USE_SSE
return _mm_shuffle_ps(v, v, 0xff);
#else
vec4_t r = { v[3], v[3], v[3], v[3] };
return r;
#endif
}
static inline vec4_t
vec4_rcp (const vec4_t v)
{
#ifdef USE_SSE
__m128 est = _mm_rcp_ps (v);
__m128 diff = _mm_sub_ps (_mm_set1_ps(1.0f), _mm_mul_ps(est, v));
return _mm_add_ps(_mm_mul_ps(diff, est), est);
#else
vec4_t one = { 1.0f, 1.0f, 1.0f, 1.0f };
return one / v;
#endif
}
static inline vec4_t
vec4_min (const vec4_t a,
const vec4_t b)
{
#ifdef USE_SSE
return _mm_min_ps(a, b);
#else
return vec4_set (MIN(a[0], b[0]), MIN(a[1], b[1]), MIN(a[2], b[2]), MIN(a[3], b[3]));
#endif
}
static inline vec4_t
vec4_max (const vec4_t a,
const vec4_t b)
{
#ifdef USE_SSE
return _mm_max_ps (a, b);
#else
return vec4_set (MAX(a[0], b[0]), MAX(a[1], b[1]), MAX(a[2], b[2]), MAX(a[3], b[3]));
#endif
}
static inline vec4_t
vec4_trunc (const vec4_t v)
{
#ifdef USE_SSE
# ifdef __SSE4_1__
return _mm_round_ps(v, _MM_FROUND_TRUNC);
# elif defined(__SSE2__)
return _mm_cvtepi32_ps(_mm_cvttps_epi32(v));
# else
// convert to ints
__m128 in = v;
__m64 lo = _mm_cvttps_pi32(in);
__m64 hi = _mm_cvttps_pi32(_mm_movehl_ps(in, in));
// convert to floats
__m128 part = _mm_movelh_ps(in, _mm_cvtpi32_ps(in, hi));
__m128 trunc = _mm_cvtpi32_ps(part, lo);
// clear mmx state
_mm_empty ();
return trunc;
# endif
#else
vec4_t r = { v[0] > 0.0f ? floorf(v[0]) : ceil(v[0]),
v[1] > 0.0f ? floorf(v[1]) : ceil(v[1]),
v[2] > 0.0f ? floorf(v[2]) : ceil(v[2]),
v[3] > 0.0f ? floorf(v[3]) : ceil(v[3]), };
return r;
#endif
}
static inline float
vec4_accum (const vec4_t v)
{
#ifdef USE_SSE
float rv;
__m128 t;
# ifdef __SSE3__
t = _mm_hadd_ps(v, v);
t = _mm_hadd_ps(t, t);
# else
t = _mm_add_ps(v, _mm_movehl_ps(v, v));
t = _mm_add_ss(t, _mm_shuffle_ps(t, t, 0x01));
# endif
_mm_store_ss(&rv, t);
return rv;
#else
return v[0] + v[1] + v[2] + v[3];
#endif
}
static inline float
vec4_dot (const vec4_t a,
const vec4_t b)
{
#if defined(USE_SSE) && defined(__SSE4_1__)
float rv;
__m128 t = _mm_dp_ps(a, b, 0xff);
_mm_store_ss(&rv, t);
return rv;
#else
return vec4_accum(a * b);
#endif
}
static inline int
vec4_cmplt (const vec4_t a,
const vec4_t b)
{
#ifdef USE_SSE
__m128 bits = _mm_cmplt_ps(a, b);
int val = _mm_movemask_ps(bits);
return val != 0;
#else
return (a[0] < b[0]) || (a[1] < b[1]) || (a[2] < b[2]) || (a[3] < b[3]);
#endif
}
#endif /* __VEC_H__ */