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godot/editor/import/resource_importer_bmfont.cpp
bruvzg 4c3f7d1290 Makes FontData importable resource. 
Adds multi-channel SDF font texture generation and rendering support.
Adds per-font oversampling support.
Adds FontData import plugins (for dynamic fonts, BMFonts and monospaced image fonts), font texture cache pre-generation and loading.
Adds BMFont binary format and outline support.
2021-08-27 15:43:18 +03:00

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28 KiB
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/*************************************************************************/
/* resource_importer_bmfont.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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. */
/*************************************************************************/
#include "resource_importer_bmfont.h"
#include "core/io/image_loader.h"
#include "core/io/resource_saver.h"
String ResourceImporterBMFont::get_importer_name() const {
return "font_data_bmfont";
}
String ResourceImporterBMFont::get_visible_name() const {
return "Font Data (AngelCode BMFont)";
}
void ResourceImporterBMFont::get_recognized_extensions(List<String> *p_extensions) const {
if (p_extensions) {
p_extensions->push_back("font");
p_extensions->push_back("fnt");
}
}
String ResourceImporterBMFont::get_save_extension() const {
return "fontdata";
}
String ResourceImporterBMFont::get_resource_type() const {
return "FontData";
}
bool ResourceImporterBMFont::get_option_visibility(const String &p_option, const Map<StringName, Variant> &p_options) const {
return true;
}
void ResourceImporterBMFont::get_import_options(List<ImportOption> *r_options, int p_preset) const {
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "compress"), true));
}
void _convert_packed_8bit(Ref<FontData> &r_font, Ref<Image> &p_source, int p_page, int p_sz) {
int w = p_source->get_width();
int h = p_source->get_height();
PackedByteArray imgdata = p_source->get_data();
const uint8_t *r = imgdata.ptr();
PackedByteArray imgdata_r;
imgdata_r.resize(w * h * 2);
uint8_t *wr = imgdata_r.ptrw();
PackedByteArray imgdata_g;
imgdata_g.resize(w * h * 2);
uint8_t *wg = imgdata_g.ptrw();
PackedByteArray imgdata_b;
imgdata_b.resize(w * h * 2);
uint8_t *wb = imgdata_b.ptrw();
PackedByteArray imgdata_a;
imgdata_a.resize(w * h * 2);
uint8_t *wa = imgdata_a.ptrw();
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
int ofs_src = (i * w + j) * 4;
int ofs_dst = (i * w + j) * 2;
wr[ofs_dst + 0] = 255;
wr[ofs_dst + 1] = r[ofs_src + 0];
wg[ofs_dst + 0] = 255;
wg[ofs_dst + 1] = r[ofs_src + 1];
wb[ofs_dst + 0] = 255;
wb[ofs_dst + 1] = r[ofs_src + 2];
wa[ofs_dst + 0] = 255;
wa[ofs_dst + 1] = r[ofs_src + 3];
}
}
Ref<Image> img_r = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_r));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page * 4 + 0, img_r);
Ref<Image> img_g = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_g));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page * 4 + 1, img_g);
Ref<Image> img_b = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_b));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page * 4 + 2, img_b);
Ref<Image> img_a = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_a));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page * 4 + 3, img_a);
}
void _convert_packed_4bit(Ref<FontData> &r_font, Ref<Image> &p_source, int p_page, int p_sz) {
int w = p_source->get_width();
int h = p_source->get_height();
PackedByteArray imgdata = p_source->get_data();
const uint8_t *r = imgdata.ptr();
PackedByteArray imgdata_r;
imgdata_r.resize(w * h * 2);
uint8_t *wr = imgdata_r.ptrw();
PackedByteArray imgdata_g;
imgdata_g.resize(w * h * 2);
uint8_t *wg = imgdata_g.ptrw();
PackedByteArray imgdata_b;
imgdata_b.resize(w * h * 2);
uint8_t *wb = imgdata_b.ptrw();
PackedByteArray imgdata_a;
imgdata_a.resize(w * h * 2);
uint8_t *wa = imgdata_a.ptrw();
PackedByteArray imgdata_ro;
imgdata_ro.resize(w * h * 2);
uint8_t *wro = imgdata_ro.ptrw();
PackedByteArray imgdata_go;
imgdata_go.resize(w * h * 2);
uint8_t *wgo = imgdata_go.ptrw();
PackedByteArray imgdata_bo;
imgdata_bo.resize(w * h * 2);
uint8_t *wbo = imgdata_bo.ptrw();
PackedByteArray imgdata_ao;
imgdata_ao.resize(w * h * 2);
uint8_t *wao = imgdata_ao.ptrw();
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
int ofs_src = (i * w + j) * 4;
int ofs_dst = (i * w + j) * 2;
wr[ofs_dst + 0] = 255;
wro[ofs_dst + 0] = 255;
if (r[ofs_src + 0] > 0x0F) {
wr[ofs_dst + 1] = (r[ofs_src + 0] - 0x0F) * 2;
wro[ofs_dst + 1] = 0;
} else {
wr[ofs_dst + 1] = 0;
wro[ofs_dst + 1] = r[ofs_src + 0] * 2;
}
wg[ofs_dst + 0] = 255;
wgo[ofs_dst + 0] = 255;
if (r[ofs_src + 1] > 0x0F) {
wg[ofs_dst + 1] = (r[ofs_src + 1] - 0x0F) * 2;
wgo[ofs_dst + 1] = 0;
} else {
wg[ofs_dst + 1] = 0;
wgo[ofs_dst + 1] = r[ofs_src + 1] * 2;
}
wb[ofs_dst + 0] = 255;
wbo[ofs_dst + 0] = 255;
if (r[ofs_src + 2] > 0x0F) {
wb[ofs_dst + 1] = (r[ofs_src + 2] - 0x0F) * 2;
wbo[ofs_dst + 1] = 0;
} else {
wb[ofs_dst + 1] = 0;
wbo[ofs_dst + 1] = r[ofs_src + 2] * 2;
}
wa[ofs_dst + 0] = 255;
wao[ofs_dst + 0] = 255;
if (r[ofs_src + 3] > 0x0F) {
wa[ofs_dst + 1] = (r[ofs_src + 3] - 0x0F) * 2;
wao[ofs_dst + 1] = 0;
} else {
wa[ofs_dst + 1] = 0;
wao[ofs_dst + 1] = r[ofs_src + 3] * 2;
}
}
}
Ref<Image> img_r = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_r));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page * 4 + 0, img_r);
Ref<Image> img_g = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_g));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page * 4 + 1, img_g);
Ref<Image> img_b = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_b));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page * 4 + 2, img_b);
Ref<Image> img_a = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_a));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page * 4 + 3, img_a);
Ref<Image> img_ro = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_ro));
r_font->set_texture_image(0, Vector2i(p_sz, 1), p_page * 4 + 0, img_ro);
Ref<Image> img_go = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_go));
r_font->set_texture_image(0, Vector2i(p_sz, 1), p_page * 4 + 1, img_go);
Ref<Image> img_bo = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_bo));
r_font->set_texture_image(0, Vector2i(p_sz, 1), p_page * 4 + 2, img_bo);
Ref<Image> img_ao = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_ao));
r_font->set_texture_image(0, Vector2i(p_sz, 1), p_page * 4 + 3, img_ao);
}
void _convert_rgba_4bit(Ref<FontData> &r_font, Ref<Image> &p_source, int p_page, int p_sz) {
int w = p_source->get_width();
int h = p_source->get_height();
PackedByteArray imgdata = p_source->get_data();
const uint8_t *r = imgdata.ptr();
PackedByteArray imgdata_g;
imgdata_g.resize(w * h * 4);
uint8_t *wg = imgdata_g.ptrw();
PackedByteArray imgdata_o;
imgdata_o.resize(w * h * 4);
uint8_t *wo = imgdata_o.ptrw();
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
int ofs = (i * w + j) * 4;
if (r[ofs + 0] > 0x7F) {
wg[ofs + 0] = r[ofs + 0];
wo[ofs + 0] = 0;
} else {
wg[ofs + 0] = 0;
wo[ofs + 0] = r[ofs + 0] * 2;
}
if (r[ofs + 1] > 0x7F) {
wg[ofs + 1] = r[ofs + 1];
wo[ofs + 1] = 0;
} else {
wg[ofs + 1] = 0;
wo[ofs + 1] = r[ofs + 1] * 2;
}
if (r[ofs + 2] > 0x7F) {
wg[ofs + 2] = r[ofs + 2];
wo[ofs + 2] = 0;
} else {
wg[ofs + 2] = 0;
wo[ofs + 2] = r[ofs + 2] * 2;
}
if (r[ofs + 3] > 0x7F) {
wg[ofs + 3] = r[ofs + 3];
wo[ofs + 3] = 0;
} else {
wg[ofs + 3] = 0;
wo[ofs + 3] = r[ofs + 3] * 2;
}
}
}
Ref<Image> img_g = memnew(Image(w, h, 0, Image::FORMAT_RGBA8, imgdata_g));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page, img_g);
Ref<Image> img_o = memnew(Image(w, h, 0, Image::FORMAT_RGBA8, imgdata_o));
r_font->set_texture_image(0, Vector2i(p_sz, 1), p_page, img_o);
}
void _convert_mono_8bit(Ref<FontData> &r_font, Ref<Image> &p_source, int p_page, int p_ch, int p_sz, int p_ol) {
int w = p_source->get_width();
int h = p_source->get_height();
PackedByteArray imgdata = p_source->get_data();
const uint8_t *r = imgdata.ptr();
int size = 4;
if (p_source->get_format() == Image::FORMAT_L8) {
size = 1;
p_ch = 0;
}
PackedByteArray imgdata_g;
imgdata_g.resize(w * h * 2);
uint8_t *wg = imgdata_g.ptrw();
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
int ofs_src = (i * w + j) * size;
int ofs_dst = (i * w + j) * 2;
wg[ofs_dst + 0] = 255;
wg[ofs_dst + 1] = r[ofs_src + p_ch];
}
}
Ref<Image> img_g = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_g));
r_font->set_texture_image(0, Vector2i(p_sz, p_ol), p_page, img_g);
}
void _convert_mono_4bit(Ref<FontData> &r_font, Ref<Image> &p_source, int p_page, int p_ch, int p_sz, int p_ol) {
int w = p_source->get_width();
int h = p_source->get_height();
PackedByteArray imgdata = p_source->get_data();
const uint8_t *r = imgdata.ptr();
int size = 4;
if (p_source->get_format() == Image::FORMAT_L8) {
size = 1;
p_ch = 0;
}
PackedByteArray imgdata_g;
imgdata_g.resize(w * h * 2);
uint8_t *wg = imgdata_g.ptrw();
PackedByteArray imgdata_o;
imgdata_o.resize(w * h * 2);
uint8_t *wo = imgdata_o.ptrw();
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
int ofs_src = (i * w + j) * size;
int ofs_dst = (i * w + j) * 2;
wg[ofs_dst + 0] = 255;
wo[ofs_dst + 0] = 255;
if (r[ofs_src + p_ch] > 0x7F) {
wg[ofs_dst + 1] = r[ofs_src + p_ch];
wo[ofs_dst + 1] = 0;
} else {
wg[ofs_dst + 1] = 0;
wo[ofs_dst + 1] = r[ofs_src + p_ch] * 2;
}
}
}
Ref<Image> img_g = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_g));
r_font->set_texture_image(0, Vector2i(p_sz, 0), p_page, img_g);
Ref<Image> img_o = memnew(Image(w, h, 0, Image::FORMAT_LA8, imgdata_o));
r_font->set_texture_image(0, Vector2i(p_sz, p_ol), p_page, img_o);
}
Error ResourceImporterBMFont::import(const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata) {
print_verbose("Importing BMFont font from: " + p_source_file);
Ref<FontData> font;
font.instantiate();
font->set_antialiased(false);
font->set_multichannel_signed_distance_field(false);
font->set_force_autohinter(false);
font->set_hinting(TextServer::HINTING_NONE);
font->set_oversampling(1.0f);
FileAccessRef f = FileAccess::open(p_source_file, FileAccess::READ);
if (f == nullptr) {
ERR_FAIL_V_MSG(ERR_CANT_CREATE, TTR("Cannot open font from file ") + "\"" + p_source_file + "\".");
}
int base_size = 16;
int height = 0;
int ascent = 0;
int outline = 0;
bool packed = false;
uint8_t ch[4] = { 0, 0, 0, 0 }; // RGBA
int first_gl_ch = -1;
int first_ol_ch = -1;
int first_cm_ch = -1;
unsigned char magic[4];
f->get_buffer((unsigned char *)&magic, 4);
if (magic[0] == 'B' && magic[1] == 'M' && magic[2] == 'F') {
// Binary BMFont file.
ERR_FAIL_COND_V_MSG(magic[3] != 3, ERR_CANT_CREATE, vformat(TTR("Version %d of BMFont is not supported."), (int)magic[3]));
uint8_t block_type = f->get_8();
uint32_t block_size = f->get_32();
while (!f->eof_reached()) {
uint64_t off = f->get_position();
switch (block_type) {
case 1: /* info */ {
ERR_FAIL_COND_V_MSG(block_size < 15, ERR_CANT_CREATE, TTR("Invalid BMFont info block size."));
base_size = f->get_16();
uint8_t flags = f->get_8();
ERR_FAIL_COND_V_MSG(flags & 0x02, ERR_CANT_CREATE, TTR("Non-unicode version of BMFont is not supported."));
f->get_8(); // non-unicode charset, skip
f->get_16(); // stretch_h, skip
f->get_8(); // aa, skip
f->get_32(); // padding, skip
f->get_16(); // spacing, skip
outline = f->get_8();
// font name, skip
font->set_fixed_size(base_size);
} break;
case 2: /* common */ {
ERR_FAIL_COND_V_MSG(block_size != 15, ERR_CANT_CREATE, TTR("Invalid BMFont common block size."));
height = f->get_16();
ascent = f->get_16();
f->get_32(); // scale, skip
f->get_16(); // pages, skip
uint8_t flags = f->get_8();
packed = (flags & 0x01);
ch[3] = f->get_8();
ch[0] = f->get_8();
ch[1] = f->get_8();
ch[2] = f->get_8();
for (int i = 0; i < 4; i++) {
if (ch[i] == 0 && first_gl_ch == -1) {
first_gl_ch = i;
}
if (ch[i] == 1 && first_ol_ch == -1) {
first_ol_ch = i;
}
if (ch[i] == 2 && first_cm_ch == -1) {
first_cm_ch = i;
}
}
} break;
case 3: /* pages */ {
int page = 0;
CharString cs;
char32_t c = f->get_8();
while (!f->eof_reached() && f->get_position() <= off + block_size) {
if (c == '\0') {
String base_dir = p_source_file.get_base_dir();
String file = base_dir.plus_file(String::utf8(cs.ptr(), cs.length()));
if (RenderingServer::get_singleton() != nullptr) {
Ref<Image> img;
img.instantiate();
Error err = ImageLoader::load_image(file, img);
ERR_FAIL_COND_V_MSG(err != OK, ERR_FILE_CANT_READ, TTR("Can't load font texture: ") + "\"" + file + "\".");
if (packed) {
if (ch[3] == 0) { // 4 x 8 bit monochrome, no outline
outline = 0;
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_packed_8bit(font, img, page, base_size);
} else if ((ch[3] == 2) && (outline > 0)) { // 4 x 4 bit monochrome, gl + outline
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_packed_4bit(font, img, page, base_size);
} else {
ERR_FAIL_V_MSG(ERR_CANT_CREATE, TTR("Unsupported BMFont texture format."));
}
} else {
if ((ch[0] == 0) && (ch[1] == 0) && (ch[2] == 0) && (ch[3] == 0)) { // RGBA8 color, no outline
outline = 0;
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
font->set_texture_image(0, Vector2i(base_size, 0), page, img);
} else if ((ch[0] == 2) && (ch[1] == 2) && (ch[2] == 2) && (ch[3] == 2) && (outline > 0)) { // RGBA4 color, gl + outline
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_rgba_4bit(font, img, page, base_size);
} else if ((first_gl_ch >= 0) && (first_ol_ch >= 0) && (outline > 0)) { // 1 x 8 bit monochrome, gl + outline
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8 && img->get_format() != Image::FORMAT_L8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_mono_8bit(font, img, page, first_gl_ch, base_size, 0);
_convert_mono_8bit(font, img, page, first_ol_ch, base_size, 1);
} else if ((first_cm_ch >= 0) && (outline > 0)) { // 1 x 4 bit monochrome, gl + outline
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8 && img->get_format() != Image::FORMAT_L8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_mono_4bit(font, img, page, first_cm_ch, base_size, 1);
} else if (first_gl_ch >= 0) { // 1 x 8 bit monochrome, no outline
outline = 0;
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8 && img->get_format() != Image::FORMAT_L8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_mono_8bit(font, img, page, first_gl_ch, base_size, 0);
} else {
ERR_FAIL_V_MSG(ERR_CANT_CREATE, TTR("Unsupported BMFont texture format."));
}
}
}
page++;
cs = "";
} else {
cs += c;
}
c = f->get_8();
}
} break;
case 4: /* chars */ {
int char_count = block_size / 20;
for (int i = 0; i < char_count; i++) {
Vector2 advance;
Vector2 size;
Vector2 offset;
Rect2 uv_rect;
char32_t idx = f->get_32();
uv_rect.position.x = (int16_t)f->get_16();
uv_rect.position.y = (int16_t)f->get_16();
uv_rect.size.width = (int16_t)f->get_16();
size.width = uv_rect.size.width;
uv_rect.size.height = (int16_t)f->get_16();
size.height = uv_rect.size.height;
offset.x = (int16_t)f->get_16();
offset.y = (int16_t)f->get_16() - ascent;
advance.x = (int16_t)f->get_16();
if (advance.x < 0) {
advance.x = size.width + 1;
}
int texture_idx = f->get_8();
uint8_t channel = f->get_8();
ERR_FAIL_COND_V_MSG(!packed && channel != 15, ERR_CANT_CREATE, TTR("Invalid glyph channel."));
int ch_off = 0;
switch (channel) {
case 1:
ch_off = 2;
break; // B
case 2:
ch_off = 1;
break; // G
case 4:
ch_off = 0;
break; // R
case 8:
ch_off = 3;
break; // A
default:
ch_off = 0;
break;
}
font->set_glyph_advance(0, base_size, idx, advance);
font->set_glyph_offset(0, Vector2i(base_size, 0), idx, offset);
font->set_glyph_size(0, Vector2i(base_size, 0), idx, size);
font->set_glyph_uv_rect(0, Vector2i(base_size, 0), idx, uv_rect);
font->set_glyph_texture_idx(0, Vector2i(base_size, 0), idx, texture_idx * (packed ? 4 : 1) + ch_off);
if (outline > 0) {
font->set_glyph_offset(0, Vector2i(base_size, 1), idx, offset);
font->set_glyph_size(0, Vector2i(base_size, 1), idx, size);
font->set_glyph_uv_rect(0, Vector2i(base_size, 1), idx, uv_rect);
font->set_glyph_texture_idx(0, Vector2i(base_size, 1), idx, texture_idx * (packed ? 4 : 1) + ch_off);
}
}
} break;
case 5: /* kerning */ {
int pair_count = block_size / 10;
for (int i = 0; i < pair_count; i++) {
Vector2i kpk;
kpk.x = f->get_32();
kpk.y = f->get_32();
font->set_kerning(0, base_size, kpk, Vector2((int16_t)f->get_16(), 0));
}
} break;
default: {
ERR_FAIL_V_MSG(ERR_CANT_CREATE, TTR("Invalid BMFont block type."));
} break;
}
f->seek(off + block_size);
block_type = f->get_8();
block_size = f->get_32();
}
} else {
// Text BMFont file.
f->seek(0);
while (true) {
String line = f->get_line();
int delimiter = line.find(" ");
String type = line.substr(0, delimiter);
int pos = delimiter + 1;
Map<String, String> keys;
while (pos < line.size() && line[pos] == ' ') {
pos++;
}
while (pos < line.size()) {
int eq = line.find("=", pos);
if (eq == -1) {
break;
}
String key = line.substr(pos, eq - pos);
int end = -1;
String value;
if (line[eq + 1] == '"') {
end = line.find("\"", eq + 2);
if (end == -1) {
break;
}
value = line.substr(eq + 2, end - 1 - eq - 1);
pos = end + 1;
} else {
end = line.find(" ", eq + 1);
if (end == -1) {
end = line.size();
}
value = line.substr(eq + 1, end - eq);
pos = end;
}
while (pos < line.size() && line[pos] == ' ') {
pos++;
}
keys[key] = value;
}
if (type == "info") {
if (keys.has("size")) {
base_size = keys["size"].to_int();
font->set_fixed_size(base_size);
}
if (keys.has("outline")) {
outline = keys["outline"].to_int();
}
ERR_FAIL_COND_V_MSG((!keys.has("unicode") || keys["unicode"].to_int() != 1), ERR_CANT_CREATE, TTR("Non-unicode version of BMFont is not supported."));
} else if (type == "common") {
if (keys.has("lineHeight")) {
height = keys["lineHeight"].to_int();
}
if (keys.has("base")) {
ascent = keys["base"].to_int();
}
if (keys.has("packed")) {
packed = (keys["packed"].to_int() == 1);
}
if (keys.has("alphaChnl")) {
ch[3] = keys["alphaChnl"].to_int();
}
if (keys.has("redChnl")) {
ch[0] = keys["redChnl"].to_int();
}
if (keys.has("greenChnl")) {
ch[1] = keys["greenChnl"].to_int();
}
if (keys.has("blueChnl")) {
ch[2] = keys["blueChnl"].to_int();
}
for (int i = 0; i < 4; i++) {
if (ch[i] == 0 && first_gl_ch == -1) {
first_gl_ch = i;
}
if (ch[i] == 1 && first_ol_ch == -1) {
first_ol_ch = i;
}
if (ch[i] == 2 && first_cm_ch == -1) {
first_cm_ch = i;
}
}
} else if (type == "page") {
int page = 0;
if (keys.has("id")) {
page = keys["id"].to_int();
}
if (keys.has("file")) {
String base_dir = p_source_file.get_base_dir();
String file = base_dir.plus_file(keys["file"]);
if (RenderingServer::get_singleton() != nullptr) {
Ref<Image> img;
img.instantiate();
Error err = ImageLoader::load_image(file, img);
ERR_FAIL_COND_V_MSG(err != OK, ERR_FILE_CANT_READ, TTR("Can't load font texture: ") + "\"" + file + "\".");
if (packed) {
if (ch[3] == 0) { // 4 x 8 bit monochrome, no outline
outline = 0;
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_packed_8bit(font, img, page, base_size);
} else if ((ch[3] == 2) && (outline > 0)) { // 4 x 4 bit monochrome, gl + outline
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_packed_4bit(font, img, page, base_size);
} else {
ERR_FAIL_V_MSG(ERR_CANT_CREATE, TTR("Unsupported BMFont texture format."));
}
} else {
if ((ch[0] == 0) && (ch[1] == 0) && (ch[2] == 0) && (ch[3] == 0)) { // RGBA8 color, no outline
outline = 0;
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
font->set_texture_image(0, Vector2i(base_size, 0), page, img);
} else if ((ch[0] == 2) && (ch[1] == 2) && (ch[2] == 2) && (ch[3] == 2) && (outline > 0)) { // RGBA4 color, gl + outline
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_rgba_4bit(font, img, page, base_size);
} else if ((first_gl_ch >= 0) && (first_ol_ch >= 0) && (outline > 0)) { // 1 x 8 bit monochrome, gl + outline
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8 && img->get_format() != Image::FORMAT_L8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_mono_8bit(font, img, page, first_gl_ch, base_size, 0);
_convert_mono_8bit(font, img, page, first_ol_ch, base_size, 1);
} else if ((first_cm_ch >= 0) && (outline > 0)) { // 1 x 4 bit monochrome, gl + outline
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8 && img->get_format() != Image::FORMAT_L8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_mono_4bit(font, img, page, first_cm_ch, base_size, 1);
} else if (first_gl_ch >= 0) { // 1 x 8 bit monochrome, no outline
outline = 0;
ERR_FAIL_COND_V_MSG(img->get_format() != Image::FORMAT_RGBA8 && img->get_format() != Image::FORMAT_L8, ERR_FILE_CANT_READ, TTR("Unsupported BMFont texture format."));
_convert_mono_8bit(font, img, page, first_gl_ch, base_size, 0);
} else {
ERR_FAIL_V_MSG(ERR_CANT_CREATE, TTR("Unsupported BMFont texture format."));
}
}
}
}
} else if (type == "char") {
char32_t idx = 0;
Vector2 advance;
Vector2 size;
Vector2 offset;
Rect2 uv_rect;
int texture_idx = -1;
uint8_t channel = 15;
if (keys.has("id")) {
idx = keys["id"].to_int();
}
if (keys.has("x")) {
uv_rect.position.x = keys["x"].to_int();
}
if (keys.has("y")) {
uv_rect.position.y = keys["y"].to_int();
}
if (keys.has("width")) {
uv_rect.size.width = keys["width"].to_int();
size.width = keys["width"].to_int();
}
if (keys.has("height")) {
uv_rect.size.height = keys["height"].to_int();
size.height = keys["height"].to_int();
}
if (keys.has("xoffset")) {
offset.x = keys["xoffset"].to_int();
}
if (keys.has("yoffset")) {
offset.y = keys["yoffset"].to_int() - ascent;
}
if (keys.has("page")) {
texture_idx = keys["page"].to_int();
}
if (keys.has("xadvance")) {
advance.x = keys["xadvance"].to_int();
}
if (advance.x < 0) {
advance.x = size.width + 1;
}
if (keys.has("chnl")) {
channel = keys["chnl"].to_int();
}
ERR_FAIL_COND_V_MSG(!packed && channel != 15, ERR_CANT_CREATE, TTR("Invalid glyph channel."));
int ch_off = 0;
switch (channel) {
case 1:
ch_off = 2;
break; // B
case 2:
ch_off = 1;
break; // G
case 4:
ch_off = 0;
break; // R
case 8:
ch_off = 3;
break; // A
default:
ch_off = 0;
break;
}
font->set_glyph_advance(0, base_size, idx, advance);
font->set_glyph_offset(0, Vector2i(base_size, 0), idx, offset);
font->set_glyph_size(0, Vector2i(base_size, 0), idx, size);
font->set_glyph_uv_rect(0, Vector2i(base_size, 0), idx, uv_rect);
font->set_glyph_texture_idx(0, Vector2i(base_size, 0), idx, texture_idx * (packed ? 4 : 1) + ch_off);
if (outline > 0) {
font->set_glyph_offset(0, Vector2i(base_size, 1), idx, offset);
font->set_glyph_size(0, Vector2i(base_size, 1), idx, size);
font->set_glyph_uv_rect(0, Vector2i(base_size, 1), idx, uv_rect);
font->set_glyph_texture_idx(0, Vector2i(base_size, 1), idx, texture_idx * (packed ? 4 : 1) + ch_off);
}
} else if (type == "kerning") {
Vector2i kpk;
if (keys.has("first")) {
kpk.x = keys["first"].to_int();
}
if (keys.has("second")) {
kpk.y = keys["second"].to_int();
}
if (keys.has("amount")) {
font->set_kerning(0, base_size, kpk, Vector2(keys["amount"].to_int(), 0));
}
}
if (f->eof_reached()) {
break;
}
}
}
font->set_ascent(0, base_size, ascent);
font->set_descent(0, base_size, height - ascent);
int flg = ResourceSaver::SaverFlags::FLAG_BUNDLE_RESOURCES | ResourceSaver::FLAG_REPLACE_SUBRESOURCE_PATHS;
if ((bool)p_options["compress"]) {
flg |= ResourceSaver::SaverFlags::FLAG_COMPRESS;
}
print_verbose("Saving to: " + p_save_path + ".fontdata");
Error err = ResourceSaver::save(p_save_path + ".fontdata", font, flg);
ERR_FAIL_COND_V_MSG(err != OK, err, "Cannot save font to file \"" + p_save_path + ".res\".");
print_verbose("Done saving to: " + p_save_path + ".fontdata");
return OK;
}
ResourceImporterBMFont::ResourceImporterBMFont() {
}
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