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Diffstat (limited to '')
| -rw-r--r-- | plug-ins/file-dds/ddswrite.c | 2278 |
1 files changed, 2278 insertions, 0 deletions
diff --git a/plug-ins/file-dds/ddswrite.c b/plug-ins/file-dds/ddswrite.c new file mode 100644 index 0000000..5fb658a --- /dev/null +++ b/plug-ins/file-dds/ddswrite.c @@ -0,0 +1,2278 @@ +/* + * 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 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 <math.h> + +#include <gtk/gtk.h> +#include <glib/gstdio.h> + +#include <libgimp/gimp.h> +#include <libgimp/gimpui.h> + +#include <libgimp/stdplugins-intl.h> + +#include "ddsplugin.h" +#include "dds.h" +#include "dxt.h" +#include "mipmap.h" +#include "endian_rw.h" +#include "imath.h" +#include "color.h" + + +enum +{ + COMBO_VALUE, + COMBO_STRING, + COMBO_SENSITIVE +}; + + +static gint save_dialog (gint32 image_id, + gint32 drawable); +static void save_dialog_response (GtkWidget *widget, + gint response_id, + gpointer data); +static gboolean write_image (FILE *fp, + gint32 image_id, + gint32 drawable_id); + + +static gboolean runme = FALSE; + +static const char *cubemap_face_names[4][6] = +{ + { + "positive x", "negative x", + "positive y", "negative y", + "positive z", "negative z" + }, + { + "pos x", "neg x", + "pos y", "neg y", + "pos z", "neg z", + }, + { + "+x", "-x", + "+y", "-y", + "+z", "-z" + }, + { + "right", "left", + "top", "bottom", + "back", "front" + } +}; + +static gint cubemap_faces[6]; +static gboolean is_cubemap = FALSE; +static gboolean is_volume = FALSE; +static gboolean is_array = FALSE; +static gboolean is_mipmap_chain_valid = FALSE; + +static GtkWidget *compress_opt; +static GtkWidget *format_opt; +static GtkWidget *mipmap_opt; +static GtkWidget *mipmap_filter_opt; +static GtkWidget *mipmap_wrap_opt; +static GtkWidget *srgb_chk; +static GtkWidget *gamma_chk; +static GtkWidget *gamma_spin; +static GtkWidget *pm_chk; +static GtkWidget *alpha_coverage_chk; +static GtkWidget *alpha_test_threshold_spin; + +typedef struct string_value_s +{ + gint value; + gchar *string; +} string_value_t; + +static string_value_t compression_strings[] = +{ + { DDS_COMPRESS_NONE, "None" }, + { DDS_COMPRESS_BC1, "BC1 / DXT1" }, + { DDS_COMPRESS_BC2, "BC2 / DXT3" }, + { DDS_COMPRESS_BC3, "BC3 / DXT5" }, + { DDS_COMPRESS_BC3N, "BC3nm / DXT5nm" }, + { DDS_COMPRESS_BC4, "BC4 / ATI1 (3Dc+)" }, + { DDS_COMPRESS_BC5, "BC5 / ATI2 (3Dc)" }, + { DDS_COMPRESS_RXGB, "RXGB (DXT5)" }, + { DDS_COMPRESS_AEXP, "Alpha Exponent (DXT5)" }, + { DDS_COMPRESS_YCOCG, "YCoCg (DXT5)" }, + { DDS_COMPRESS_YCOCGS, "YCoCg scaled (DXT5)" }, + { -1, 0} +}; + +static string_value_t format_strings[] = +{ + { DDS_FORMAT_DEFAULT, "Default" }, + { DDS_FORMAT_RGB8, "RGB8" }, + { DDS_FORMAT_RGBA8, "RGBA8" }, + { DDS_FORMAT_BGR8, "BGR8" }, + { DDS_FORMAT_ABGR8, "ABGR8" }, + { DDS_FORMAT_R5G6B5, "R5G6B5" }, + { DDS_FORMAT_RGBA4, "RGBA4" }, + { DDS_FORMAT_RGB5A1, "RGB5A1" }, + { DDS_FORMAT_RGB10A2, "RGB10A2" }, + { DDS_FORMAT_R3G3B2, "R3G3B2" }, + { DDS_FORMAT_A8, "A8" }, + { DDS_FORMAT_L8, "L8" }, + { DDS_FORMAT_L8A8, "L8A8" }, + { DDS_FORMAT_AEXP, "AExp" }, + { DDS_FORMAT_YCOCG, "YCoCg" }, + { -1, 0} +}; + +static string_value_t mipmap_strings[] = +{ + { DDS_MIPMAP_NONE, "No mipmaps" }, + { DDS_MIPMAP_GENERATE, "Generate mipmaps" }, + { DDS_MIPMAP_EXISTING, "Use existing mipmaps" }, + { -1, 0} +}; + +static string_value_t mipmap_filter_strings[] = +{ + { DDS_MIPMAP_FILTER_DEFAULT, "Default" }, + { DDS_MIPMAP_FILTER_NEAREST, "Nearest" }, + { DDS_MIPMAP_FILTER_BOX, "Box" }, + { DDS_MIPMAP_FILTER_TRIANGLE, "Triangle" }, + { DDS_MIPMAP_FILTER_QUADRATIC, "Quadratic" }, + { DDS_MIPMAP_FILTER_BSPLINE, "B-Spline" }, + { DDS_MIPMAP_FILTER_MITCHELL, "Mitchell" }, + { DDS_MIPMAP_FILTER_LANCZOS, "Lanczos" }, + { DDS_MIPMAP_FILTER_KAISER, "Kaiser" }, + { -1, 0} +}; + +static string_value_t mipmap_wrap_strings[] = +{ + { DDS_MIPMAP_WRAP_DEFAULT, "Default" }, + { DDS_MIPMAP_WRAP_MIRROR, "Mirror" }, + { DDS_MIPMAP_WRAP_REPEAT, "Repeat" }, + { DDS_MIPMAP_WRAP_CLAMP, "Clamp" }, + { -1, 0} +}; + +static string_value_t save_type_strings[] = +{ + { DDS_SAVE_SELECTED_LAYER, "Selected layer" }, + { DDS_SAVE_CUBEMAP, "As cube map" }, + { DDS_SAVE_VOLUMEMAP, "As volume map" }, + { DDS_SAVE_ARRAY, "As texture array" }, + { DDS_SAVE_VISIBLE_LAYERS, "All visible layers" }, + { -1, 0} +}; + +static struct +{ + int format; + DXGI_FORMAT dxgi_format; + int bpp; + int alpha; + unsigned int rmask; + unsigned int gmask; + unsigned int bmask; + unsigned int amask; +} format_info[] = +{ + { DDS_FORMAT_RGB8, DXGI_FORMAT_UNKNOWN, 3, 0, 0x00ff0000, 0x0000ff00, 0x000000ff, 0x00000000}, + { DDS_FORMAT_RGBA8, DXGI_FORMAT_B8G8R8A8_UNORM, 4, 1, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000}, + { DDS_FORMAT_BGR8, DXGI_FORMAT_UNKNOWN, 3, 0, 0x000000ff, 0x0000ff00, 0x00ff0000, 0x00000000}, + { DDS_FORMAT_ABGR8, DXGI_FORMAT_R8G8B8A8_UNORM, 4, 1, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000}, + { DDS_FORMAT_R5G6B5, DXGI_FORMAT_B5G6R5_UNORM, 2, 0, 0x0000f800, 0x000007e0, 0x0000001f, 0x00000000}, + { DDS_FORMAT_RGBA4, DXGI_FORMAT_B4G4R4A4_UNORM, 2, 1, 0x00000f00, 0x000000f0, 0x0000000f, 0x0000f000}, + { DDS_FORMAT_RGB5A1, DXGI_FORMAT_B5G5R5A1_UNORM, 2, 1, 0x00007c00, 0x000003e0, 0x0000001f, 0x00008000}, + { DDS_FORMAT_RGB10A2, DXGI_FORMAT_R10G10B10A2_UNORM, 4, 1, 0x000003ff, 0x000ffc00, 0x3ff00000, 0xc0000000}, + { DDS_FORMAT_R3G3B2, DXGI_FORMAT_UNKNOWN, 1, 0, 0x000000e0, 0x0000001c, 0x00000003, 0x00000000}, + { DDS_FORMAT_A8, DXGI_FORMAT_A8_UNORM, 1, 0, 0x00000000, 0x00000000, 0x00000000, 0x000000ff}, + { DDS_FORMAT_L8, DXGI_FORMAT_R8_UNORM, 1, 0, 0x000000ff, 0x000000ff, 0x000000ff, 0x00000000}, + { DDS_FORMAT_L8A8, DXGI_FORMAT_UNKNOWN, 2, 1, 0x000000ff, 0x000000ff, 0x000000ff, 0x0000ff00}, + { DDS_FORMAT_AEXP, DXGI_FORMAT_B8G8R8A8_UNORM, 4, 1, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000}, + { DDS_FORMAT_YCOCG, DXGI_FORMAT_B8G8R8A8_UNORM, 4, 1, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000} +}; + + +static gboolean +check_mipmaps (gint32 image_id, + gint savetype) +{ + gint *layers; + gint num_layers; + gint i, j, w, h, mipw, miph; + gint num_mipmaps; + gint num_surfaces = 0; + gint min_surfaces = 1; + gint max_surfaces = 1; + gboolean valid = TRUE; + GimpImageType type; + + /* not handling volume maps for the moment... */ + if (savetype == DDS_SAVE_VOLUMEMAP) + return 0; + + if (savetype == DDS_SAVE_CUBEMAP) + { + min_surfaces = 6; + max_surfaces = 6; + } + else if (savetype == DDS_SAVE_ARRAY) + { + min_surfaces = 2; + max_surfaces = INT_MAX; + } + + layers = gimp_image_get_layers (image_id, &num_layers); + + w = gimp_image_width (image_id); + h = gimp_image_height (image_id); + + num_mipmaps = get_num_mipmaps (w, h); + + type = gimp_drawable_type (layers[0]); + + for (i = 0; i < num_layers; ++i) + { + if (type != gimp_drawable_type (layers[i])) + return 0; + + if ((gimp_drawable_width (layers[i]) == w) && + (gimp_drawable_height (layers[i]) == h)) + ++num_surfaces; + } + + if ((num_surfaces < min_surfaces) || + (num_surfaces > max_surfaces) || + (num_layers != (num_surfaces * num_mipmaps))) + return 0; + + for (i = 0; valid && i < num_layers; i += num_mipmaps) + { + if ((gimp_drawable_width (layers[i]) != w) || + (gimp_drawable_height (layers[i]) != h)) + { + valid = FALSE; + break; + } + + for (j = 1; j < num_mipmaps; ++j) + { + mipw = w >> j; + miph = h >> j; + if (mipw < 1) mipw = 1; + if (miph < 1) miph = 1; + if ((gimp_drawable_width (layers[i + j]) != mipw) || + (gimp_drawable_height (layers[i + j]) != miph)) + { + valid = FALSE; + break; + } + } + } + + return valid; +} + +static gboolean +check_cubemap (gint32 image_id) +{ + gint *layers; + gint num_layers; + gboolean cubemap = TRUE; + gint i, j, k, w, h; + gchar *layer_name; + GimpImageType type; + + layers = gimp_image_get_layers (image_id, &num_layers); + + if (num_layers < 6) + return FALSE; + + /* check for a valid cubemap with mipmap layers */ + if (num_layers > 6) + { + /* check that mipmap layers are in order for a cubemap */ + if (! check_mipmaps (image_id, DDS_SAVE_CUBEMAP)) + return FALSE; + + /* invalidate cubemap faces */ + for (i = 0; i < 6; ++i) + cubemap_faces[i] = -1; + + /* find the mipmap level 0 layers */ + w = gimp_image_width (image_id); + h = gimp_image_height (image_id); + + for (i = 0; i < num_layers; ++i) + { + if ((gimp_drawable_width (layers[i]) != w) || + (gimp_drawable_height (layers[i]) != h)) + continue; + + layer_name = (char*)gimp_item_get_name (layers[i]); + for (j = 0; j < 6; ++j) + { + for (k = 0; k < 4; ++k) + { + if (strstr (layer_name, cubemap_face_names[k][j])) + { + if (cubemap_faces[j] == -1) + { + cubemap_faces[j] = layers[i]; + break; + } + } + } + } + } + + /* check for 6 valid faces */ + for (i = 0; i < 6; ++i) + { + if (cubemap_faces[i] == -1) + { + cubemap = FALSE; + break; + } + } + + /* make sure they are all the same type */ + if (cubemap) + { + type = gimp_drawable_type (cubemap_faces[0]); + for (i = 1; i < 6 && cubemap; ++i) + { + if (gimp_drawable_type (cubemap_faces[i]) != type) + cubemap = FALSE; + } + } + } + + if (num_layers == 6) + { + /* invalidate cubemap faces */ + for (i = 0; i < 6; ++i) + cubemap_faces[i] = -1; + + for (i = 0; i < 6; ++i) + { + layer_name = (char*)gimp_item_get_name (layers[i]); + for (j = 0; j < 6; ++j) + { + for (k = 0; k < 4; ++k) + { + if (strstr (layer_name, cubemap_face_names[k][j])) + { + if (cubemap_faces[j] == -1) + { + cubemap_faces[j] = layers[i]; + break; + } + } + } + } + } + + /* check for 6 valid faces */ + for (i = 0; i < 6; ++i) + { + if (cubemap_faces[i] == -1) + { + cubemap = FALSE; + break; + } + } + + /* make sure they are all the same size */ + if (cubemap) + { + w = gimp_drawable_width (cubemap_faces[0]); + h = gimp_drawable_height (cubemap_faces[0]); + + for (i = 1; i < 6 && cubemap; ++i) + { + if ((gimp_drawable_width (cubemap_faces[i]) != w) || + (gimp_drawable_height (cubemap_faces[i]) != h)) + cubemap = FALSE; + } + } + + /* make sure they are all the same type */ + if (cubemap) + { + type = gimp_drawable_type (cubemap_faces[0]); + for (i = 1; i < 6 && cubemap; ++i) + { + if (gimp_drawable_type (cubemap_faces[i]) != type) + cubemap = FALSE; + } + } + } + + return cubemap; +} + +static gboolean +check_volume (gint32 image_id) +{ + gint *layers; + gint num_layers; + gboolean volume = FALSE; + gint i, w, h; + GimpImageType type; + + layers = gimp_image_get_layers (image_id, &num_layers); + + if (num_layers > 1) + { + volume = TRUE; + + /* make sure all layers are the same size */ + w = gimp_drawable_width (layers[0]); + h = gimp_drawable_height (layers[0]); + + for (i = 1; i < num_layers && volume; ++i) + { + if ((gimp_drawable_width (layers[i]) != w) || + (gimp_drawable_height (layers[i]) != h)) + volume = FALSE; + } + + if (volume) + { + /* make sure all layers are the same type */ + type = gimp_drawable_type (layers[0]); + for (i = 1; i < num_layers && volume; ++i) + { + if (gimp_drawable_type (layers[i]) != type) + volume = FALSE; + } + } + } + + return volume; +} + +static gboolean +check_array (gint32 image_id) +{ + gint *layers; + gint num_layers; + gboolean array = FALSE; + gint i, w, h; + GimpImageType type; + + if (check_mipmaps (image_id, DDS_SAVE_ARRAY)) + return 1; + + layers = gimp_image_get_layers (image_id, &num_layers); + + if (num_layers > 1) + { + array = TRUE; + + /* make sure all layers are the same size */ + w = gimp_drawable_width (layers[0]); + h = gimp_drawable_height (layers[0]); + + for (i = 1; i < num_layers && array; ++i) + { + if ((gimp_drawable_width (layers[i]) != w) || + (gimp_drawable_height (layers[i]) != h)) + array = FALSE; + } + + if (array) + { + /* make sure all layers are the same type */ + type = gimp_drawable_type (layers[0]); + for (i = 1; i < num_layers; ++i) + { + if (gimp_drawable_type (layers[i]) != type) + { + array = FALSE; + break; + } + } + } + } + + return array; +} + +static int +get_array_size (gint32 image_id) +{ + gint *layers; + gint num_layers; + gint i, w, h; + gint elements = 0; + + layers = gimp_image_get_layers (image_id, &num_layers); + + w = gimp_image_width (image_id); + h = gimp_image_height (image_id); + + for (i = 0; i < num_layers; ++i) + { + if ((gimp_drawable_width (layers[i]) == w) && + (gimp_drawable_height (layers[i]) == h)) + { + elements++; + } + } + + return elements; +} + +GimpPDBStatusType +write_dds (gchar *filename, + gint32 image_id, + gint32 drawable_id, + gboolean interactive_dds, + gboolean is_duplicate_image) +{ + FILE *fp; + gchar *tmp; + int rc = 0; + + is_mipmap_chain_valid = check_mipmaps (image_id, dds_write_vals.savetype); + + is_cubemap = check_cubemap (image_id); + is_volume = check_volume (image_id); + is_array = check_array (image_id); + + if (interactive_dds) + { + if (! is_mipmap_chain_valid && + dds_write_vals.mipmaps == DDS_MIPMAP_EXISTING) + dds_write_vals.mipmaps = DDS_MIPMAP_NONE; + + if (! save_dialog (image_id, drawable_id)) + return GIMP_PDB_CANCEL; + } + else + { + if (dds_write_vals.savetype == DDS_SAVE_CUBEMAP && ! is_cubemap) + { + g_message ("DDS: Cannot save image as cube map"); + return GIMP_PDB_EXECUTION_ERROR; + } + + if (dds_write_vals.savetype == DDS_SAVE_VOLUMEMAP && ! is_volume) + { + g_message ("DDS: Cannot save image as volume map"); + return GIMP_PDB_EXECUTION_ERROR; + } + + if (dds_write_vals.savetype == DDS_SAVE_VOLUMEMAP && + dds_write_vals.compression != DDS_COMPRESS_NONE) + { + g_message ("DDS: Cannot save volume map with compression"); + return GIMP_PDB_EXECUTION_ERROR; + } + + if (dds_write_vals.mipmaps == DDS_MIPMAP_EXISTING && + ! is_mipmap_chain_valid) + { + g_message ("DDS: Cannot save with existing mipmaps as the mipmap chain is incomplete"); + return GIMP_PDB_EXECUTION_ERROR; + } + } + + fp = g_fopen (filename, "wb"); + if (fp == 0) + { + g_message ("Error opening %s", filename); + return GIMP_PDB_EXECUTION_ERROR; + } + + if (strrchr (filename, '/')) + tmp = g_strdup_printf ("Saving %s:", strrchr (filename, '/') + 1); + else + tmp = g_strdup_printf ("Saving %s:", filename); + gimp_progress_init (tmp); + g_free (tmp); + + /* If destructive changes are going to happen to the image, + * make sure we send a duplicate of it to write_image + */ + if (! is_duplicate_image) + { + gint32 duplicate_image = gimp_image_duplicate (image_id); + rc = write_image (fp, duplicate_image, drawable_id); + gimp_image_delete (duplicate_image); + } + else + { + rc = write_image (fp, image_id, drawable_id); + } + + + fclose (fp); + + return rc ? GIMP_PDB_SUCCESS : GIMP_PDB_EXECUTION_ERROR; +} + +static void +swap_rb (unsigned char *pixels, + unsigned int n, + int bpp) +{ + unsigned int i; + unsigned char t; + + for (i = 0; i < n; ++i) + { + t = pixels[bpp * i + 0]; + pixels[bpp * i + 0] = pixels[bpp * i + 2]; + pixels[bpp * i + 2] = t; + } +} + +static void +alpha_exp (unsigned char *dst, + int r, + int g, + int b, + int a) +{ + float ar, ag, ab, aa; + + ar = (float)r / 255.0f; + ag = (float)g / 255.0f; + ab = (float)b / 255.0f; + + aa = MAX (ar, MAX (ag, ab)); + + if (aa < 1e-04f) + { + dst[0] = b; + dst[1] = g; + dst[2] = r; + dst[3] = 255; + return; + } + + ar /= aa; + ag /= aa; + ab /= aa; + + r = (int)floorf (255.0f * ar + 0.5f); + g = (int)floorf (255.0f * ag + 0.5f); + b = (int)floorf (255.0f * ab + 0.5f); + a = (int)floorf (255.0f * aa + 0.5f); + + dst[0] = MAX (0, MIN (255, b)); + dst[1] = MAX (0, MIN (255, g)); + dst[2] = MAX (0, MIN (255, r)); + dst[3] = MAX (0, MIN (255, a)); +} + +static void +convert_pixels (unsigned char *dst, + unsigned char *src, + int format, + int w, + int h, + int d, + int bpp, + unsigned char *palette, + int mipmaps) +{ + unsigned int i, num_pixels; + unsigned char r, g, b, a; + + if (d > 0) + num_pixels = get_volume_mipmapped_size (w, h, d, 1, 0, mipmaps, DDS_COMPRESS_NONE); + else + num_pixels = get_mipmapped_size (w, h, 1, 0, mipmaps, DDS_COMPRESS_NONE); + + for (i = 0; i < num_pixels; ++i) + { + if (bpp == 1) + { + if (palette) + { + r = palette[3 * src[i] + 0]; + g = palette[3 * src[i] + 1]; + b = palette[3 * src[i] + 2]; + } + else + r = g = b = src[i]; + + if (format == DDS_FORMAT_A8) + a = src[i]; + else + a = 255; + } + else if (bpp == 2) + { + r = g = b = src[2 * i]; + a = src[2 * i + 1]; + } + else if (bpp == 3) + { + b = src[3 * i + 0]; + g = src[3 * i + 1]; + r = src[3 * i + 2]; + a = 255; + } + else + { + b = src[4 * i + 0]; + g = src[4 * i + 1]; + r = src[4 * i + 2]; + a = src[4 * i + 3]; + } + + switch (format) + { + case DDS_FORMAT_RGB8: + dst[3 * i + 0] = b; + dst[3 * i + 1] = g; + dst[3 * i + 2] = r; + break; + case DDS_FORMAT_RGBA8: + dst[4 * i + 0] = b; + dst[4 * i + 1] = g; + dst[4 * i + 2] = r; + dst[4 * i + 3] = a; + break; + case DDS_FORMAT_BGR8: + dst[3 * i + 0] = r; + dst[3 * i + 1] = g; + dst[3 * i + 2] = b; + break; + case DDS_FORMAT_ABGR8: + dst[4 * i + 0] = r; + dst[4 * i + 1] = g; + dst[4 * i + 2] = b; + dst[4 * i + 3] = a; + break; + case DDS_FORMAT_R5G6B5: + PUTL16(&dst[2 * i], pack_r5g6b5(r, g, b)); + break; + case DDS_FORMAT_RGBA4: + PUTL16(&dst[2 * i], pack_rgba4(r, g, b, a)); + break; + case DDS_FORMAT_RGB5A1: + PUTL16(&dst[2 * i], pack_rgb5a1(r, g, b, a)); + break; + case DDS_FORMAT_RGB10A2: + PUTL32(&dst[4 * i], pack_rgb10a2(r, g, b, a)); + break; + case DDS_FORMAT_R3G3B2: + dst[i] = pack_r3g3b2(r, g, b); + break; + case DDS_FORMAT_A8: + dst[i] = a; + break; + case DDS_FORMAT_L8: + dst[i] = rgb_to_luminance (r, g, b); + break; + case DDS_FORMAT_L8A8: + dst[2 * i + 0] = rgb_to_luminance (r, g, b); + dst[2 * i + 1] = a; + break; + case DDS_FORMAT_YCOCG: + dst[4 * i] = a; + RGB_to_YCoCg (&dst[4 * i], r, g, b); + break; + case DDS_FORMAT_AEXP: + alpha_exp (&dst[4 * i], r, g, b, a); + break; + default: + break; + } + } +} + +static void +get_mipmap_chain (unsigned char *dst, + int w, + int h, + int bpp, + gint32 image_id, + gint drawable_id) +{ + gint *layers, num_layers; + GeglBuffer *buffer; + const Babl *format = 0; + int i, idx = 0, offset, mipw, miph; + + if (bpp == 1) + format = babl_format ("Y' u8"); + else if (bpp == 2) + format = babl_format ("Y'A u8"); + else if (bpp == 3) + format = babl_format ("R'G'B' u8"); + else + format = babl_format ("R'G'B'A u8"); + + layers = gimp_image_get_layers (image_id, &num_layers); + + for (i = 0; i < num_layers; ++i) + { + if (layers[i] == drawable_id) + { + idx = i; + break; + } + } + + if (i == num_layers) return; + + offset = 0; + + while (get_next_mipmap_dimensions (&mipw, &miph, w, h)) + { + buffer = gimp_drawable_get_buffer (layers[++idx]); + + if ((gegl_buffer_get_width (buffer) != mipw) || + (gegl_buffer_get_height (buffer) != miph)) + { + g_object_unref (buffer); + return; + } + + gegl_buffer_get (buffer, GEGL_RECTANGLE (0, 0, mipw, miph), 1.0, format, + dst + offset, GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + g_object_unref (buffer); + + /* we need BGRX or BGRA */ + if (bpp >= 3) + swap_rb (dst + offset, mipw * miph, bpp); + + offset += (mipw * miph * bpp); + w = mipw; + h = miph; + } +} + +static void +write_layer (FILE *fp, + gint32 image_id, + gint32 drawable_id, + int w, + int h, + int bpp, + int fmtbpp, + int mipmaps) +{ + GeglBuffer *buffer; + const Babl *format = 0; + GimpImageBaseType basetype; + GimpImageType type; + unsigned char *src, *dst, *fmtdst, *tmp; + unsigned char *palette = NULL; + int i, c, x, y, size, fmtsize, offset, colors; + int compression = dds_write_vals.compression; + int flags = 0; + + basetype = gimp_image_base_type (image_id); + type = gimp_drawable_type (drawable_id); + + buffer = gimp_drawable_get_buffer (drawable_id); + + src = g_malloc (w * h * bpp); + + if (basetype == GIMP_INDEXED) + format = gimp_drawable_get_format (drawable_id); + else if (bpp == 1) + format = babl_format ("Y' u8"); + else if (bpp == 2) + format = babl_format ("Y'A u8"); + else if (bpp == 3) + format = babl_format ("R'G'B' u8"); + else + format = babl_format ("R'G'B'A u8"); + + gegl_buffer_get (buffer, GEGL_RECTANGLE (0, 0, w, h), 1.0, format, src, + GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + + if (basetype == GIMP_INDEXED) + { + palette = gimp_image_get_colormap (image_id, &colors); + + if (type == GIMP_INDEXEDA_IMAGE) + { + tmp = g_malloc (w * h); + for (i = 0; i < w * h; ++i) + tmp[i] = src[2 * i]; + g_free (src); + src = tmp; + bpp = 1; + } + } + + /* we want and assume BGRA ordered pixels for bpp >= 3 from here and + onwards */ + if (bpp >= 3) + swap_rb (src, w * h, bpp); + + if (compression == DDS_COMPRESS_BC3N) + { + if (bpp != 4) + { + fmtsize = w * h * 4; + fmtdst = g_malloc (fmtsize); + convert_pixels (fmtdst, src, DDS_FORMAT_RGBA8, w, h, 0, bpp, + palette, 1); + g_free (src); + src = fmtdst; + bpp = 4; + } + + for (y = 0; y < h; ++y) + { + for (x = 0; x < w; ++x) + { + /* set alpha to red (x) */ + src[y * (w * 4) + (x * 4) + 3] = + src[y * (w * 4) + (x * 4) + 2]; + /* set red to 1 */ + src[y * (w * 4) + (x * 4) + 2] = 255; + } + } + } + + /* RXGB (Doom3) */ + if (compression == DDS_COMPRESS_RXGB) + { + if (bpp != 4) + { + fmtsize = w * h * 4; + fmtdst = g_malloc (fmtsize); + convert_pixels (fmtdst, src, DDS_FORMAT_RGBA8, w, h, 0, bpp, + palette, 1); + g_free (src); + src = fmtdst; + bpp = 4; + } + + for (y = 0; y < h; ++y) + { + for (x = 0; x < w; ++x) + { + /* swap red and alpha */ + c = src[y * (w * 4) + (x * 4) + 3]; + src[y * (w * 4) + (x * 4) + 3] = + src[y * (w * 4) + (x * 4) + 2]; + src[y * (w * 4) + (x * 4) + 2] = c; + } + } + } + + if (compression == DDS_COMPRESS_YCOCG || + compression == DDS_COMPRESS_YCOCGS) /* convert to YCoCG */ + { + fmtsize = w * h * 4; + fmtdst = g_malloc (fmtsize); + convert_pixels (fmtdst, src, DDS_FORMAT_YCOCG, w, h, 0, bpp, + palette, 1); + g_free (src); + src = fmtdst; + bpp = 4; + } + + if (compression == DDS_COMPRESS_AEXP) + { + fmtsize = w * h * 4; + fmtdst = g_malloc (fmtsize); + convert_pixels (fmtdst, src, DDS_FORMAT_AEXP, w, h, 0, bpp, + palette, 1); + g_free (src); + src = fmtdst; + bpp = 4; + } + + if (compression == DDS_COMPRESS_NONE) + { + if (mipmaps > 1) + { + /* pre-convert indexed images to RGB for better quality mipmaps + if a pixel format conversion is requested */ + if (dds_write_vals.format > DDS_FORMAT_DEFAULT && basetype == GIMP_INDEXED) + { + fmtsize = get_mipmapped_size (w, h, 3, 0, mipmaps, DDS_COMPRESS_NONE); + fmtdst = g_malloc (fmtsize); + convert_pixels (fmtdst, src, DDS_FORMAT_RGB8, w, h, 0, bpp, + palette, 1); + g_free (src); + src = fmtdst; + bpp = 3; + palette = NULL; + } + + size = get_mipmapped_size (w, h, bpp, 0, mipmaps, DDS_COMPRESS_NONE); + dst = g_malloc (size); + if (dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE) + { + generate_mipmaps (dst, src, w, h, bpp, palette != NULL, + mipmaps, + dds_write_vals.mipmap_filter, + dds_write_vals.mipmap_wrap, + dds_write_vals.gamma_correct + dds_write_vals.srgb, + dds_write_vals.gamma, + dds_write_vals.preserve_alpha_coverage, + dds_write_vals.alpha_test_threshold); + } + else + { + memcpy (dst, src, w * h * bpp); + get_mipmap_chain (dst + (w * h * bpp), w, h, bpp, image_id, drawable_id); + } + + if (dds_write_vals.format > DDS_FORMAT_DEFAULT) + { + fmtsize = get_mipmapped_size (w, h, fmtbpp, 0, mipmaps, + DDS_COMPRESS_NONE); + fmtdst = g_malloc (fmtsize); + + convert_pixels (fmtdst, dst, dds_write_vals.format, w, h, 0, bpp, + palette, mipmaps); + + g_free (dst); + dst = fmtdst; + bpp = fmtbpp; + } + + offset = 0; + + for (i = 0; i < mipmaps; ++i) + { + size = get_mipmapped_size (w, h, bpp, i, 1, DDS_COMPRESS_NONE); + fwrite (dst + offset, 1, size, fp); + offset += size; + } + + g_free (dst); + } + else + { + if (dds_write_vals.format > DDS_FORMAT_DEFAULT) + { + fmtdst = g_malloc (h * w * fmtbpp); + convert_pixels (fmtdst, src, dds_write_vals.format, w, h, 0, bpp, + palette, 1); + g_free (src); + src = fmtdst; + bpp = fmtbpp; + } + + fwrite (src, 1, h * w * bpp, fp); + } + } + else + { + size = get_mipmapped_size (w, h, bpp, 0, mipmaps, compression); + + dst = g_malloc (size); + + if (basetype == GIMP_INDEXED) + { + fmtsize = get_mipmapped_size (w, h, 3, 0, mipmaps, + DDS_COMPRESS_NONE); + fmtdst = g_malloc (fmtsize); + convert_pixels (fmtdst, src, DDS_FORMAT_RGB8, w, h, 0, bpp, + palette, mipmaps); + g_free (src); + src = fmtdst; + bpp = 3; + } + + if (mipmaps > 1) + { + fmtsize = get_mipmapped_size (w, h, bpp, 0, mipmaps, + DDS_COMPRESS_NONE); + fmtdst = g_malloc (fmtsize); + if (dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE) + { + generate_mipmaps (fmtdst, src, w, h, bpp, 0, mipmaps, + dds_write_vals.mipmap_filter, + dds_write_vals.mipmap_wrap, + dds_write_vals.gamma_correct + dds_write_vals.srgb, + dds_write_vals.gamma, + dds_write_vals.preserve_alpha_coverage, + dds_write_vals.alpha_test_threshold); + } + else + { + memcpy (fmtdst, src, w * h * bpp); + get_mipmap_chain (fmtdst + (w * h * bpp), w, h, bpp, image_id, drawable_id); + } + + g_free (src); + src = fmtdst; + } + + flags = 0; + if (dds_write_vals.perceptual_metric) flags |= DXT_PERCEPTUAL; + + dxt_compress (dst, src, compression, w, h, bpp, mipmaps, flags); + + fwrite (dst, 1, size, fp); + + g_free (dst); + } + + g_free (src); + + g_object_unref (buffer); +} + +static void +write_volume_mipmaps (FILE *fp, + gint32 image_id, + gint32 *layers, + int w, + int h, + int d, + int bpp, + int fmtbpp, + int mipmaps) +{ + int i, size, offset, colors; + unsigned char *src, *dst, *tmp, *fmtdst; + unsigned char *palette = 0; + GeglBuffer *buffer; + const Babl *format; + GimpImageBaseType type; + + type = gimp_image_base_type (image_id); + + if (dds_write_vals.compression != DDS_COMPRESS_NONE) return; + + src = g_malloc (w * h * bpp * d); + + if (bpp == 1) + format = babl_format ("Y' u8"); + else if (bpp == 2) + format = babl_format ("Y'A u8"); + else if (bpp == 3) + format = babl_format ("R'G'B' u8"); + else + format = babl_format ("R'G'B'A u8"); + + if (gimp_image_base_type (image_id) == GIMP_INDEXED) + palette = gimp_image_get_colormap (image_id, &colors); + + offset = 0; + for (i = 0; i < d; ++i) + { + buffer = gimp_drawable_get_buffer (layers[i]); + gegl_buffer_get (buffer, GEGL_RECTANGLE (0, 0, w, h), 1.0, format, + src + offset, GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + offset += (w * h * bpp); + g_object_unref (buffer); + } + + if (gimp_drawable_type (layers[0]) == GIMP_INDEXEDA_IMAGE) + { + tmp = g_malloc (w * h * d); + for (i = 0; i < w * h * d; ++i) + tmp[i] = src[2 * i]; + g_free (src); + src = tmp; + bpp = 1; + } + + /* we want and assume BGRA ordered pixels for bpp >= 3 from here and + onwards */ + if (bpp >= 3) + swap_rb (src, w * h * d, bpp); + + /* pre-convert indexed images to RGB for better mipmaps if a + pixel format conversion is requested */ + if (dds_write_vals.format > DDS_FORMAT_DEFAULT && type == GIMP_INDEXED) + { + size = get_volume_mipmapped_size (w, h, d, 3, 0, mipmaps, + DDS_COMPRESS_NONE); + dst = g_malloc (size); + convert_pixels (dst, src, DDS_FORMAT_RGB8, w, h, d, bpp, palette, 1); + g_free (src); + src = dst; + bpp = 3; + palette = NULL; + } + + size = get_volume_mipmapped_size (w, h, d, bpp, 0, mipmaps, + dds_write_vals.compression); + + dst = g_malloc (size); + + offset = get_volume_mipmapped_size (w, h, d, bpp, 0, 1, + dds_write_vals.compression); + + generate_volume_mipmaps (dst, src, w, h, d, bpp, + palette != NULL, mipmaps, + dds_write_vals.mipmap_filter, + dds_write_vals.mipmap_wrap, + dds_write_vals.gamma_correct + dds_write_vals.srgb, + dds_write_vals.gamma); + + if (dds_write_vals.format > DDS_FORMAT_DEFAULT) + { + size = get_volume_mipmapped_size (w, h, d, fmtbpp, 0, mipmaps, + dds_write_vals.compression); + offset = get_volume_mipmapped_size (w, h, d, fmtbpp, 0, 1, + dds_write_vals.compression); + fmtdst = g_malloc (size); + + convert_pixels (fmtdst, dst, dds_write_vals.format, w, h, d, bpp, + palette, mipmaps); + g_free (dst); + dst = fmtdst; + } + + fwrite (dst + offset, 1, size, fp); + + g_free (src); + g_free (dst); +} + +static gboolean +write_image (FILE *fp, + gint32 image_id, + gint32 drawable_id) +{ + GimpImageType drawable_type; + GimpImageBaseType basetype; + gint i, w, h; + gint bpp = 0; + gint fmtbpp = 0; + gint has_alpha = 0; + gint num_mipmaps; + guchar hdr[DDS_HEADERSIZE]; + guchar hdr10[DDS_HEADERSIZE_DX10]; + guint flags = 0, pflags = 0, caps = 0, caps2 = 0, size = 0; + guint rmask = 0, gmask = 0, bmask = 0, amask = 0; + guint fourcc = 0; + DXGI_FORMAT dxgi_format = DXGI_FORMAT_UNKNOWN; + gint32 num_layers; + gint32 *layers; + guchar *cmap; + gint colors; + guchar zero[4] = {0, 0, 0, 0}; + gint is_dx10 = 0; + gint array_size = 1; + + if (dds_write_vals.flip_image) + { + gimp_image_flip (image_id, GIMP_ORIENTATION_VERTICAL); + drawable_id = gimp_image_get_active_drawable (image_id); + } + + layers = gimp_image_get_layers (image_id, &num_layers); + + if (dds_write_vals.mipmaps == DDS_MIPMAP_EXISTING) + drawable_id = layers[0]; + + if (dds_write_vals.savetype == DDS_SAVE_SELECTED_LAYER) + { + w = gimp_drawable_width (drawable_id); + h = gimp_drawable_height (drawable_id); + } + else + { + w = gimp_image_width (image_id); + h = gimp_image_height (image_id); + } + + basetype = gimp_image_base_type (image_id); + drawable_type = gimp_drawable_type (drawable_id); + + switch (drawable_type) + { + case GIMP_RGB_IMAGE: bpp = 3; break; + case GIMP_RGBA_IMAGE: bpp = 4; break; + case GIMP_GRAY_IMAGE: bpp = 1; break; + case GIMP_GRAYA_IMAGE: bpp = 2; break; + case GIMP_INDEXED_IMAGE: bpp = 1; break; + case GIMP_INDEXEDA_IMAGE: bpp = 2; break; + default: + break; + } + + if (dds_write_vals.format > DDS_FORMAT_DEFAULT) + { + for (i = 0; ; ++i) + { + if (format_info[i].format == dds_write_vals.format) + { + fmtbpp = format_info[i].bpp; + has_alpha = format_info[i].alpha; + rmask = format_info[i].rmask; + gmask = format_info[i].gmask; + bmask = format_info[i].bmask; + amask = format_info[i].amask; + dxgi_format = format_info[i].dxgi_format; + break; + } + } + } + else if (bpp == 1) + { + if (basetype == GIMP_INDEXED) + { + fmtbpp = 1; + has_alpha = 0; + rmask = bmask = gmask = amask = 0; + } + else + { + fmtbpp = 1; + has_alpha = 0; + rmask = 0x000000ff; + gmask = bmask = amask = 0; + dxgi_format = DXGI_FORMAT_R8_UNORM; + } + } + else if (bpp == 2) + { + if (basetype == GIMP_INDEXED) + { + fmtbpp = 1; + has_alpha = 0; + rmask = gmask = bmask = amask = 0; + } + else + { + fmtbpp = 2; + has_alpha = 1; + rmask = 0x000000ff; + gmask = 0x000000ff; + bmask = 0x000000ff; + amask = 0x0000ff00; + } + } + else if (bpp == 3) + { + fmtbpp = 3; + rmask = 0x00ff0000; + gmask = 0x0000ff00; + bmask = 0x000000ff; + amask = 0x00000000; + } + else + { + fmtbpp = 4; + has_alpha = 1; + rmask = 0x00ff0000; + gmask = 0x0000ff00; + bmask = 0x000000ff; + amask = 0xff000000; + dxgi_format = DXGI_FORMAT_B8G8R8A8_UNORM; + } + + memset (hdr, 0, DDS_HEADERSIZE); + + PUTL32(hdr, FOURCC ('D','D','S',' ')); + PUTL32(hdr + 4, 124); + PUTL32(hdr + 12, h); + PUTL32(hdr + 16, w); + PUTL32(hdr + 76, 32); + + if (dds_write_vals.compression == DDS_COMPRESS_NONE) + { + PUTL32(hdr + 88, fmtbpp << 3); + PUTL32(hdr + 92, rmask); + PUTL32(hdr + 96, gmask); + PUTL32(hdr + 100, bmask); + PUTL32(hdr + 104, amask); + } + + /* + put some information in the reserved area to identify the origin + of the image + */ + PUTL32(hdr + 32, FOURCC ('G','I','M','P')); + PUTL32(hdr + 36, FOURCC ('-','D','D','S')); + PUTL32(hdr + 40, DDS_PLUGIN_VERSION); + + flags = DDSD_CAPS | DDSD_PIXELFORMAT | DDSD_WIDTH | DDSD_HEIGHT; + + caps = DDSCAPS_TEXTURE; + if (dds_write_vals.mipmaps) + { + flags |= DDSD_MIPMAPCOUNT; + caps |= (DDSCAPS_COMPLEX | DDSCAPS_MIPMAP); + num_mipmaps = get_num_mipmaps (w, h); + } + else + { + num_mipmaps = 1; + } + + if ((dds_write_vals.savetype == DDS_SAVE_CUBEMAP) && is_cubemap) + { + caps |= DDSCAPS_COMPLEX; + caps2 |= (DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_ALL_FACES); + } + else if ((dds_write_vals.savetype == DDS_SAVE_VOLUMEMAP) && is_volume) + { + PUTL32(hdr + 24, num_layers); /* depth */ + flags |= DDSD_DEPTH; + caps |= DDSCAPS_COMPLEX; + caps2 |= DDSCAPS2_VOLUME; + } + + PUTL32(hdr + 28, num_mipmaps); + PUTL32(hdr + 108, caps); + PUTL32(hdr + 112, caps2); + + if (dds_write_vals.compression == DDS_COMPRESS_NONE) + { + flags |= DDSD_PITCH; + + if (dds_write_vals.format > DDS_FORMAT_DEFAULT) + { + if (dds_write_vals.format == DDS_FORMAT_A8) + pflags |= DDPF_ALPHA; + else + { + if (((fmtbpp == 1) || (dds_write_vals.format == DDS_FORMAT_L8A8)) && + (dds_write_vals.format != DDS_FORMAT_R3G3B2)) + pflags |= DDPF_LUMINANCE; + else + pflags |= DDPF_RGB; + } + } + else + { + if (bpp == 1) + { + if (basetype == GIMP_INDEXED) + pflags |= DDPF_PALETTEINDEXED8; + else + pflags |= DDPF_LUMINANCE; + } + else if ((bpp == 2) && (basetype == GIMP_INDEXED)) + { + pflags |= DDPF_PALETTEINDEXED8; + } + else + { + pflags |= DDPF_RGB; + } + } + + if (has_alpha) + pflags |= DDPF_ALPHAPIXELS; + + PUTL32 (hdr + 8, flags); + PUTL32 (hdr + 20, w * fmtbpp); /* pitch */ + PUTL32 (hdr + 80, pflags); + + /* + * write extra fourcc info - this is special to GIMP DDS. When the image + * is read by the plugin, we can detect the added information to decode + * the pixels + */ + if (dds_write_vals.format == DDS_FORMAT_AEXP) + { + PUTL32 (hdr + 44, FOURCC ('A','E','X','P')); + } + else if (dds_write_vals.format == DDS_FORMAT_YCOCG) + { + PUTL32 (hdr + 44, FOURCC ('Y','C','G','1')); + } + } + else + { + flags |= DDSD_LINEARSIZE; + pflags = DDPF_FOURCC; + + switch (dds_write_vals.compression) + { + case DDS_COMPRESS_BC1: + fourcc = FOURCC ('D','X','T','1'); + dxgi_format = DXGI_FORMAT_BC1_UNORM; + break; + + case DDS_COMPRESS_BC2: + fourcc = FOURCC ('D','X','T','3'); + dxgi_format = DXGI_FORMAT_BC2_UNORM; + break; + + case DDS_COMPRESS_BC3: + case DDS_COMPRESS_BC3N: + case DDS_COMPRESS_YCOCG: + case DDS_COMPRESS_YCOCGS: + case DDS_COMPRESS_AEXP: + fourcc = FOURCC ('D','X','T','5'); + dxgi_format = DXGI_FORMAT_BC3_UNORM; + break; + + case DDS_COMPRESS_RXGB: + fourcc = FOURCC ('R','X','G','B'); + dxgi_format = DXGI_FORMAT_BC3_UNORM; + break; + + case DDS_COMPRESS_BC4: + fourcc = FOURCC ('A','T','I','1'); + dxgi_format = DXGI_FORMAT_BC4_UNORM; + //is_dx10 = 1; + break; + + case DDS_COMPRESS_BC5: + fourcc = FOURCC ('A','T','I','2'); + dxgi_format = DXGI_FORMAT_BC5_UNORM; + //is_dx10 = 1; + break; + } + + if ((dds_write_vals.compression == DDS_COMPRESS_BC3N) || + (dds_write_vals.compression == DDS_COMPRESS_RXGB)) + { + pflags |= DDPF_NORMAL; + } + + PUTL32 (hdr + 8, flags); + PUTL32 (hdr + 80, pflags); + PUTL32 (hdr + 84, fourcc); + + size = ((w + 3) >> 2) * ((h + 3) >> 2); + if ((dds_write_vals.compression == DDS_COMPRESS_BC1) || + (dds_write_vals.compression == DDS_COMPRESS_BC4)) + size *= 8; + else + size *= 16; + + PUTL32 (hdr + 20, size); /* linear size */ + + /* + * write extra fourcc info - this is special to GIMP DDS. When the image + * is read by the plugin, we can detect the added information to decode + * the pixels + */ + if (dds_write_vals.compression == DDS_COMPRESS_AEXP) + { + PUTL32 (hdr + 44, FOURCC ('A','E','X','P')); + } + else if (dds_write_vals.compression == DDS_COMPRESS_YCOCG) + { + PUTL32 (hdr + 44, FOURCC ('Y','C','G','1')); + } + else if (dds_write_vals.compression == DDS_COMPRESS_YCOCGS) + { + PUTL32 (hdr + 44, FOURCC ('Y','C','G','2')); + } + } + + /* texture arrays require a DX10 header */ + if (dds_write_vals.savetype == DDS_SAVE_ARRAY) + is_dx10 = 1; + + if (is_dx10) + { + array_size = (dds_write_vals.savetype == DDS_SAVE_SELECTED_LAYER || + dds_write_vals.savetype == DDS_SAVE_VISIBLE_LAYERS) ? 1 : get_array_size (image_id); + + PUTL32 (hdr10 + 0, dxgi_format); + PUTL32 (hdr10 + 4, D3D10_RESOURCE_DIMENSION_TEXTURE2D); + PUTL32 (hdr10 + 8, 0); + PUTL32 (hdr10 + 12, array_size); + PUTL32 (hdr10 + 16, 0); + + /* update main header accordingly */ + PUTL32 (hdr + 80, pflags | DDPF_FOURCC); + PUTL32 (hdr + 84, FOURCC ('D','X','1','0')); + } + + fwrite (hdr, DDS_HEADERSIZE, 1, fp); + + if (is_dx10) + fwrite (hdr10, DDS_HEADERSIZE_DX10, 1, fp); + + /* write palette for indexed images */ + if ((basetype == GIMP_INDEXED) && + (dds_write_vals.format == DDS_FORMAT_DEFAULT) && + (dds_write_vals.compression == DDS_COMPRESS_NONE)) + { + cmap = gimp_image_get_colormap (image_id, &colors); + + for (i = 0; i < colors; ++i) + { + fwrite (&cmap[3 * i], 1, 3, fp); + if (i == dds_write_vals.transindex) + fputc (0, fp); + else + fputc (255, fp); + } + + for (; i < 256; ++i) + fwrite (zero, 1, 4, fp); + } + + if (dds_write_vals.savetype == DDS_SAVE_CUBEMAP) + { + for (i = 0; i < 6; ++i) + { + write_layer (fp, image_id, cubemap_faces[i], w, h, bpp, fmtbpp, + num_mipmaps); + gimp_progress_update ((float)(i + 1) / 6.0); + } + } + else if (dds_write_vals.savetype == DDS_SAVE_VOLUMEMAP) + { + for (i = 0; i < num_layers; ++i) + { + write_layer (fp, image_id, layers[i], w, h, bpp, fmtbpp, 1); + gimp_progress_update ((float)i / (float)num_layers); + } + + if (num_mipmaps > 1) + write_volume_mipmaps (fp, image_id, layers, w, h, num_layers, + bpp, fmtbpp, num_mipmaps); + } + else if (dds_write_vals.savetype == DDS_SAVE_ARRAY) + { + for (i = 0; i < num_layers; ++i) + { + if ((gimp_drawable_width (layers[i]) == w) && + (gimp_drawable_height (layers[i]) == h)) + { + write_layer (fp, image_id, layers[i], + w, h, bpp, fmtbpp, num_mipmaps); + } + + gimp_progress_update ((float)i / (float)num_layers); + } + } + else + { + if (dds_write_vals.savetype == DDS_SAVE_VISIBLE_LAYERS) + drawable_id = gimp_image_merge_visible_layers (image_id, 1); + write_layer (fp, image_id, drawable_id, w, h, bpp, fmtbpp, num_mipmaps); + } + + gimp_progress_update (1.0); + + return TRUE; +} + +static GtkWidget * +string_value_combo_new (string_value_t *strings, + int active_value) +{ + GtkWidget *opt; + GtkCellRenderer *renderer; + GtkListStore *store; + GtkTreeIter iter; + gint i; + gint active = 0; + + store = gtk_list_store_new (3, G_TYPE_INT, G_TYPE_STRING, G_TYPE_BOOLEAN); + for (i = 0; strings[i].string; ++i) + { + if (strings[i].value == active_value) active = i; + gtk_list_store_append (store, &iter); + gtk_list_store_set (store, &iter, + 0, strings[i].value, + 1, strings[i].string, + 2, 1, + -1); + } + + renderer = gtk_cell_renderer_text_new (); + + opt = gtk_combo_box_new_with_model (GTK_TREE_MODEL (store)); + gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (opt), renderer, 1); + gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (opt), renderer, + "text", COMBO_STRING, + "sensitive", COMBO_SENSITIVE, + NULL); + + gtk_combo_box_set_active (GTK_COMBO_BOX (opt), active); + + g_object_unref (store); + + return opt; +} + +static void +string_value_combo_selected (GtkWidget *widget, + gpointer data) +{ + gint value; + GtkTreeIter iter; + GtkTreeModel *model; + + model = gtk_combo_box_get_model (GTK_COMBO_BOX (widget)); + gtk_combo_box_get_active_iter (GTK_COMBO_BOX (widget), &iter); + gtk_tree_model_get (model, &iter, COMBO_VALUE, &value, -1); + + *((int *)data) = value; +} + +static void +string_value_combo_set_item_sensitive (GtkWidget *widget, + gint value, + gboolean sensitive) +{ + GtkTreeIter iter; + GtkTreeModel *model; + gint val; + + model = gtk_combo_box_get_model (GTK_COMBO_BOX (widget)); + gtk_tree_model_get_iter_first (model, &iter); + do + { + gtk_tree_model_get (model, &iter, COMBO_VALUE, &val, -1); + if (val == value) + { + gtk_list_store_set (GTK_LIST_STORE (model), &iter, + COMBO_SENSITIVE, sensitive, -1); + break; + } + } while (gtk_tree_model_iter_next (model, &iter)); +} + +static void +string_value_combo_set_active (GtkWidget *widget, + gint value) +{ + GtkTreeIter iter; + GtkTreeModel *model; + int val; + + model = gtk_combo_box_get_model (GTK_COMBO_BOX (widget)); + gtk_tree_model_get_iter_first (model, &iter); + do + { + gtk_tree_model_get (model, &iter, COMBO_VALUE, &val, -1); + if (val == value) + { + gtk_combo_box_set_active_iter (GTK_COMBO_BOX (widget), &iter); + break; + } + } while (gtk_tree_model_iter_next (model, &iter)); +} + +static void +save_dialog_response (GtkWidget *widget, + gint response_id, + gpointer data) +{ + switch (response_id) + { + case GTK_RESPONSE_OK: + runme = TRUE; + + default: + gtk_widget_destroy (widget); + break; + } +} + +static void +compression_selected (GtkWidget *widget, + gpointer data) +{ + GtkTreeIter iter; + GtkTreeModel *model; + + model = gtk_combo_box_get_model (GTK_COMBO_BOX (widget)); + gtk_combo_box_get_active_iter (GTK_COMBO_BOX (widget), &iter); + gtk_tree_model_get (model, &iter, COMBO_VALUE, + &dds_write_vals.compression, + -1); + + gtk_widget_set_sensitive (format_opt, + dds_write_vals.compression == DDS_COMPRESS_NONE); + gtk_widget_set_sensitive (pm_chk, + dds_write_vals.compression != DDS_COMPRESS_NONE); +} + +static void +savetype_selected (GtkWidget *widget, + gpointer data) +{ + gint32 image_id = *((gint32 *)data); + + dds_write_vals.savetype = gtk_combo_box_get_active (GTK_COMBO_BOX (widget)); + + switch (dds_write_vals.savetype) + { + case DDS_SAVE_SELECTED_LAYER: + case DDS_SAVE_VISIBLE_LAYERS: + case DDS_SAVE_CUBEMAP: + case DDS_SAVE_ARRAY: + gtk_widget_set_sensitive (compress_opt, TRUE); + break; + + case DDS_SAVE_VOLUMEMAP: + dds_write_vals.compression = DDS_COMPRESS_NONE; + gtk_combo_box_set_active (GTK_COMBO_BOX (compress_opt), + DDS_COMPRESS_NONE); + gtk_widget_set_sensitive (compress_opt, FALSE); + break; + } + + string_value_combo_set_item_sensitive (mipmap_opt, DDS_MIPMAP_EXISTING, + check_mipmaps (image_id, dds_write_vals.savetype)); +} + +static void +mipmaps_selected (GtkWidget *widget, + gpointer data) +{ + GtkTreeModel *model; + GtkTreeIter iter; + + model = gtk_combo_box_get_model (GTK_COMBO_BOX (widget)); + gtk_combo_box_get_active_iter (GTK_COMBO_BOX (widget), &iter); + gtk_tree_model_get (model, &iter, COMBO_VALUE, + &dds_write_vals.mipmaps, -1); + + gtk_widget_set_sensitive (mipmap_filter_opt, + dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE); + gtk_widget_set_sensitive (mipmap_wrap_opt, + dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE); + gtk_widget_set_sensitive (gamma_chk, + dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE); + gtk_widget_set_sensitive (srgb_chk, + (dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE) && + dds_write_vals.gamma_correct); + gtk_widget_set_sensitive (gamma_spin, + (dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE) && + dds_write_vals.gamma_correct && + !dds_write_vals.srgb); + gtk_widget_set_sensitive (alpha_coverage_chk, + dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE); + gtk_widget_set_sensitive (alpha_test_threshold_spin, + (dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE) && + dds_write_vals.preserve_alpha_coverage); +} + +static void +toggle_clicked (GtkWidget *widget, + gpointer data) +{ + gint *flag = (int *)data; + + (*flag) = !(*flag); +} + +static void +transindex_clicked (GtkWidget *widget, + gpointer data) +{ + GtkWidget *spin = GTK_WIDGET (g_object_get_data (G_OBJECT (widget), "spin")); + + if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget))) + { + dds_write_vals.transindex = 0; + gtk_widget_set_sensitive (spin, TRUE); + gtk_spin_button_set_value (GTK_SPIN_BUTTON (spin), 0); + } + else + { + gtk_widget_set_sensitive (spin, FALSE); + dds_write_vals.transindex = -1; + } +} + +static void +transindex_changed (GtkWidget *widget, + gpointer data) +{ + dds_write_vals.transindex = + gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (widget)); +} + +static void +gamma_correct_clicked (GtkWidget *widget, + gpointer data) +{ + dds_write_vals.gamma_correct = + gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)); + + gtk_widget_set_sensitive (srgb_chk, + dds_write_vals.gamma_correct); + gtk_widget_set_sensitive (gamma_spin, + dds_write_vals.gamma_correct && + ! dds_write_vals.srgb); +} + +static void +srgb_clicked (GtkWidget *widget, + gpointer data) +{ + dds_write_vals.srgb = + gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)); + + gtk_widget_set_sensitive (gamma_spin, !dds_write_vals.srgb); +} + +static void +gamma_changed (GtkWidget *widget, + gpointer data) +{ + dds_write_vals.gamma = + gtk_spin_button_get_value (GTK_SPIN_BUTTON (widget)); +} + +static void +alpha_coverage_clicked (GtkWidget *widget, + gpointer data) +{ + dds_write_vals.preserve_alpha_coverage = + gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)); + + gtk_widget_set_sensitive (alpha_test_threshold_spin, + dds_write_vals.preserve_alpha_coverage); +} + +static void +alpha_test_threshold_changed (GtkWidget *widget, + gpointer data) +{ + dds_write_vals.alpha_test_threshold = + gtk_spin_button_get_value (GTK_SPIN_BUTTON (widget)); +} + +static gint +save_dialog (gint32 image_id, + gint32 drawable_id) +{ + GtkWidget *dlg; + GtkWidget *vbox; + GtkWidget *hbox; + GtkWidget *table; + GtkWidget *opt; + GtkWidget *check; + GtkWidget *spin; + GtkWidget *frame; + GimpImageBaseType basetype; + + if (is_cubemap || is_volume || is_array) + dds_write_vals.savetype = DDS_SAVE_SELECTED_LAYER; + + basetype = gimp_image_base_type (image_id); + + dlg = gimp_dialog_new (_("Export as DDS"), "dds", NULL, GTK_WIN_POS_MOUSE, + gimp_standard_help_func, SAVE_PROC, + _("_Cancel"), GTK_RESPONSE_CANCEL, + _("_Export"), GTK_RESPONSE_OK, + NULL); + + g_signal_connect (dlg, "response", + G_CALLBACK (save_dialog_response), + NULL); + g_signal_connect (dlg, "destroy", + G_CALLBACK (gtk_main_quit), + NULL); + + gtk_window_set_resizable (GTK_WINDOW (dlg), FALSE); + + vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6); + gtk_container_set_border_width (GTK_CONTAINER (vbox), 12); + gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dlg))), + vbox, TRUE, TRUE, 0); + gtk_widget_show (vbox); + + table = gtk_table_new (6, 2, 0); + gtk_widget_show (table); + gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0); + gtk_table_set_row_spacings (GTK_TABLE (table), 6); + gtk_table_set_col_spacings (GTK_TABLE (table), 8); + + opt = string_value_combo_new (compression_strings, + dds_write_vals.compression); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 0, + _("_Compression:"), + 0.0, 0.5, + opt, 1, FALSE); + + g_signal_connect (opt, "changed", + G_CALLBACK (compression_selected), + NULL); + + compress_opt = opt; + + check = gtk_check_button_new_with_mnemonic (_("Use _perceptual error metric")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), + dds_write_vals.perceptual_metric); + gtk_table_attach (GTK_TABLE (table), check, 1, 2, 1, 2, + GTK_FILL, 0, 0, 0); + gtk_widget_show (check); + + g_signal_connect (check, "clicked", + G_CALLBACK (toggle_clicked), + &dds_write_vals.perceptual_metric); + + pm_chk = check; + + opt = string_value_combo_new (format_strings, dds_write_vals.format); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 2, + _("_Format:"), + 0.0, 0.5, + opt, 1, FALSE); + + g_signal_connect (opt, "changed", + G_CALLBACK (string_value_combo_selected), + &dds_write_vals.format); + + gtk_widget_set_sensitive (opt, dds_write_vals.compression == DDS_COMPRESS_NONE); + + format_opt = opt; + + opt = string_value_combo_new (save_type_strings, dds_write_vals.savetype); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 3, + _("_Save:"), + 0.0, 0.5, + opt, 1, FALSE); + + g_signal_connect (opt, "changed", + G_CALLBACK (savetype_selected), + &image_id); + + string_value_combo_set_item_sensitive (opt, DDS_SAVE_CUBEMAP, is_cubemap); + string_value_combo_set_item_sensitive (opt, DDS_SAVE_VOLUMEMAP, is_volume); + string_value_combo_set_item_sensitive (opt, DDS_SAVE_ARRAY, is_array); + + check = gtk_check_button_new_with_mnemonic (_("Flip the image _vertically on export")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), + dds_write_vals.flip_image); + gtk_table_attach (GTK_TABLE (table), check, 1, 2, 4, 5, + GTK_FILL, 0, 0, 0); + gtk_widget_show (check); + + g_signal_connect (check, "clicked", + G_CALLBACK (toggle_clicked), + &dds_write_vals.flip_image); + + opt = string_value_combo_new (mipmap_strings, dds_write_vals.mipmaps); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 5, + _("_Mipmaps:"), + 0.0, 0.5, + opt, 1, FALSE); + + g_signal_connect (opt, "changed", + G_CALLBACK (mipmaps_selected), + &image_id); + + string_value_combo_set_item_sensitive (opt, DDS_MIPMAP_EXISTING, + check_mipmaps (image_id, + dds_write_vals.savetype)); + + mipmap_opt = opt; + + string_value_combo_set_item_sensitive (opt, DDS_MIPMAP_EXISTING, + ! (is_volume || is_cubemap) && + is_mipmap_chain_valid); + + + hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 8); + gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0); + gtk_widget_show (hbox); + + check = gtk_check_button_new_with_label (_("Transparent index:")); + gtk_box_pack_start (GTK_BOX (hbox), check, FALSE, FALSE, 0); + gtk_widget_show (check); + + g_signal_connect (check, "clicked", + G_CALLBACK (transindex_clicked), + NULL); + + spin = gimp_spin_button_new + (GTK_ADJUSTMENT (gtk_adjustment_new (0, 0, 255, 1, 1, 0)), 1, 0); + gtk_box_pack_start (GTK_BOX (hbox), spin, TRUE, TRUE, 0); + gtk_spin_button_set_update_policy (GTK_SPIN_BUTTON (spin), + GTK_UPDATE_IF_VALID); + gtk_widget_show (spin); + + g_signal_connect (spin, "value-changed", + G_CALLBACK (transindex_changed), + NULL); + + g_object_set_data (G_OBJECT (check), "spin", spin); + + if (basetype != GIMP_INDEXED) + { + gtk_widget_set_sensitive (check, FALSE); + gtk_widget_set_sensitive (spin, FALSE); + } + else if (dds_write_vals.transindex < 0) + { + gtk_widget_set_sensitive (spin, FALSE); + } + else if (dds_write_vals.transindex >= 0) + { + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), TRUE); + gtk_spin_button_set_value (GTK_SPIN_BUTTON (spin), + dds_write_vals.transindex); + } + + if (is_volume && dds_write_vals.savetype == DDS_SAVE_VOLUMEMAP) + { + dds_write_vals.compression = DDS_COMPRESS_NONE; + string_value_combo_set_active (compress_opt, DDS_COMPRESS_NONE); + gtk_widget_set_sensitive (compress_opt, FALSE); + } + + frame = gimp_frame_new (_("Mipmap Options")); + gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0); + gtk_widget_show (frame); + + table = gtk_table_new (7, 2, 0); + gtk_table_set_row_spacings (GTK_TABLE (table), 6); + gtk_table_set_col_spacings (GTK_TABLE (table), 8); + gtk_container_add (GTK_CONTAINER (frame), table); + gtk_widget_show (table); + + opt = string_value_combo_new (mipmap_filter_strings, + dds_write_vals.mipmap_filter); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 0, + _("F_ilter:"), + 0.0, 0.5, + opt, 1, FALSE); + + g_signal_connect (opt, "changed", + G_CALLBACK (string_value_combo_selected), + &dds_write_vals.mipmap_filter); + + mipmap_filter_opt = opt; + + opt = string_value_combo_new (mipmap_wrap_strings, + dds_write_vals.mipmap_wrap); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 1, + _("_Wrap mode:"), + 0.0, 0.5, + opt, 1, FALSE); + + g_signal_connect (opt, "changed", + G_CALLBACK (string_value_combo_selected), + &dds_write_vals.mipmap_wrap); + + mipmap_wrap_opt = opt; + + check = gtk_check_button_new_with_mnemonic (_("Appl_y gamma correction")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), + dds_write_vals.gamma_correct && + dds_write_vals.mipmaps); + gtk_table_attach (GTK_TABLE (table), check, 1, 2, 2, 3, + GTK_FILL, 0, 0, 0); + gtk_widget_show (check); + + g_signal_connect (check, "clicked", + G_CALLBACK (gamma_correct_clicked), + NULL); + + gamma_chk = check; + + check = gtk_check_button_new_with_mnemonic (_("Use s_RGB colorspace")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), + dds_write_vals.gamma_correct && + dds_write_vals.srgb); + gtk_table_attach (GTK_TABLE (table), check, 1, 2, 3, 4, + GTK_FILL, 0, 0, 0); + gtk_widget_show (check); + + g_signal_connect (check, "clicked", + G_CALLBACK (srgb_clicked), + NULL); + + srgb_chk = check; + + spin = gimp_spin_button_new + (GTK_ADJUSTMENT (gtk_adjustment_new (dds_write_vals.gamma, + 1e-05, 100, 0.1, 0.5, 0)), 1, 1); + gtk_spin_button_set_update_policy (GTK_SPIN_BUTTON (spin), GTK_UPDATE_IF_VALID); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 4, + _("_Gamma:"), + 0.0, 0.5, + spin, 1, FALSE); + + g_signal_connect (spin, "value_changed", + G_CALLBACK (gamma_changed), + NULL); + + gamma_spin = spin; + + check = gtk_check_button_new_with_mnemonic (_("Preserve alpha _test coverage")); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), + dds_write_vals.preserve_alpha_coverage && + dds_write_vals.mipmaps); + gtk_table_attach (GTK_TABLE (table), check, 1, 2, 5, 6, + GTK_FILL, 0, 0, 0); + gtk_widget_show (check); + + g_signal_connect (check, "clicked", + G_CALLBACK (alpha_coverage_clicked), + NULL); + + alpha_coverage_chk = check; + + spin = gimp_spin_button_new + (GTK_ADJUSTMENT (gtk_adjustment_new (dds_write_vals.alpha_test_threshold, + 0, 1, 0.01, 0.1, 0)), 1, 2); + gtk_spin_button_set_update_policy (GTK_SPIN_BUTTON (spin), GTK_UPDATE_IF_VALID); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 6, + _("_Alpha test threshold:"), + 0.0, 0.5, + spin, 1, FALSE); + + g_signal_connect (spin, "value_changed", + G_CALLBACK (alpha_test_threshold_changed), + NULL); + + alpha_test_threshold_spin = spin; + + gtk_widget_set_sensitive (mipmap_filter_opt, + dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE); + gtk_widget_set_sensitive (mipmap_wrap_opt, + dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE); + gtk_widget_set_sensitive (gamma_chk + , dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE); + gtk_widget_set_sensitive (srgb_chk, + (dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE) && + dds_write_vals.gamma_correct); + gtk_widget_set_sensitive (gamma_spin, + (dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE) && + dds_write_vals.gamma_correct && + !dds_write_vals.srgb); + gtk_widget_set_sensitive (pm_chk, + dds_write_vals.compression != DDS_COMPRESS_NONE); + gtk_widget_set_sensitive (alpha_coverage_chk, + dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE); + gtk_widget_set_sensitive (alpha_test_threshold_spin, + (dds_write_vals.mipmaps == DDS_MIPMAP_GENERATE) && + dds_write_vals.preserve_alpha_coverage); + + gtk_widget_show (dlg); + + runme = FALSE; + + gtk_main (); + + return runme; +} |