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Support colored font

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This commit is contained in:
volzhs 2018-01-16 22:22:59 +09:00
parent 05b1843818
commit c5e3acc29c
3 changed files with 59 additions and 22 deletions
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2
modules/freetype/SCsub
View file

@ -87,6 +87,6 @@ if env['builtin_freetype']:
# Godot source files
env.add_source_files(env.modules_sources, "*.cpp")
env.Append(CCFLAGS=['-DFREETYPE_ENABLED'])
env.Append(CCFLAGS=['-DFREETYPE_ENABLED', '-DFT_CONFIG_OPTION_USE_PNG'])
Export('env')

78
scene/resources/dynamic_font.cpp
View file

@ -192,10 +192,25 @@ Error DynamicFontAtSize::_load() {
ERR_FAIL_COND_V( error, ERR_INVALID_PARAMETER );
}*/
error = FT_Set_Pixel_Sizes(face, 0, id.size * oversampling);
if (FT_HAS_COLOR(face)) {
int best_match = 0;
int diff = ABS(id.size - face->available_sizes[0].width);
scale_color_font = float(id.size) / face->available_sizes[0].width;
for (int i = 1; i < face->num_fixed_sizes; i++) {
int ndiff = ABS(id.size - face->available_sizes[i].width);
if (ndiff < diff) {
best_match = i;
diff = ndiff;
scale_color_font = float(id.size) / face->available_sizes[i].width;
}
}
error = FT_Select_Size(face, best_match);
} else {
error = FT_Set_Pixel_Sizes(face, 0, id.size * oversampling);
}
ascent = (face->size->metrics.ascender >> 6) / oversampling;
descent = (-face->size->metrics.descender >> 6) / oversampling;
ascent = (face->size->metrics.ascender >> 6) / oversampling * scale_color_font;
descent = (-face->size->metrics.descender >> 6) / oversampling * scale_color_font;
linegap = 0;
texture_flags = 0;
if (id.mipmaps)
@ -292,7 +307,6 @@ Size2 DynamicFontAtSize::get_char_size(CharType p_char, CharType p_next, const V
ret.x += (delta.x >> 6) / oversampling;
}
}
return ret;
}
@ -334,14 +348,18 @@ float DynamicFontAtSize::draw_char(RID p_canvas_item, const Point2 &p_pos, CharT
if (!ch->found)
continue;
Point2 cpos = p_pos;
cpos.x += ch->h_align;
cpos.y -= get_ascent();
cpos.y -= fb->get_ascent();
cpos.y += ch->v_align;
ERR_FAIL_COND_V(ch->texture_idx < -1 || ch->texture_idx >= fb->textures.size(), 0);
if (ch->texture_idx != -1)
VisualServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, Rect2(cpos, ch->rect.size), fb->textures[ch->texture_idx].texture->get_rid(), ch->rect_uv, p_modulate, false, RID(), false);
if (ch->texture_idx != -1) {
Color modulate = p_modulate;
if (FT_HAS_COLOR(fb->face)) {
modulate.r = modulate.g = modulate.b = 1;
}
VisualServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, Rect2(cpos, ch->rect.size * Vector2(fb->scale_color_font, fb->scale_color_font)), fb->textures[ch->texture_idx].texture->get_rid(), ch->rect_uv, modulate, false, RID(), false);
}
advance = ch->advance;
used_fallback = true;
break;
@ -362,8 +380,13 @@ float DynamicFontAtSize::draw_char(RID p_canvas_item, const Point2 &p_pos, CharT
cpos.y -= get_ascent();
cpos.y += c->v_align;
ERR_FAIL_COND_V(c->texture_idx < -1 || c->texture_idx >= textures.size(), 0);
if (c->texture_idx != -1)
VisualServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, Rect2(cpos, c->rect.size), textures[c->texture_idx].texture->get_rid(), c->rect_uv, p_modulate, false, RID(), false);
if (c->texture_idx != -1) {
Color modulate = p_modulate;
if (FT_HAS_COLOR(face)) {
modulate.r = modulate.g = modulate.b = 1;
}
VisualServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas_item, Rect2(cpos, c->rect.size * Vector2(scale_color_font, scale_color_font)), textures[c->texture_idx].texture->get_rid(), c->rect_uv, modulate, false, RID(), false);
}
advance = c->advance;
//textures[c->texture_idx].texture->draw(p_canvas_item,Vector2());
}
@ -437,9 +460,9 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
char_map[p_char] = ch;
return;
}
int error = FT_Load_Char(face, p_char, FT_LOAD_RENDER | (font->force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0));
int error = FT_Load_Char(face, p_char, FT_HAS_COLOR(face) ? FT_LOAD_COLOR : FT_LOAD_DEFAULT | (font->force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0));
if (!error) {
error = FT_Render_Glyph(face->glyph, ft_render_mode_normal);
error = FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
}
if (error) {
@ -476,6 +499,8 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
//find a texture to fit this...
int color_size = slot->bitmap.pixel_mode == FT_PIXEL_MODE_BGRA ? 4 : 2;
Image::Format require_format = color_size == 4 ? Image::FORMAT_RGBA8 : Image::FORMAT_LA8;
int tex_index = -1;
int tex_x = 0;
int tex_y = 0;
@ -484,6 +509,9 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
CharTexture &ct = textures[i];
if (ct.texture->get_format() != require_format)
continue;
if (mw > ct.texture_size || mh > ct.texture_size) //too big for this texture
continue;
@ -533,13 +561,13 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
CharTexture tex;
tex.texture_size = texsize;
tex.imgdata.resize(texsize * texsize * 2); //grayscale alpha
tex.imgdata.resize(texsize * texsize * color_size);
{
//zero texture
PoolVector<uint8_t>::Write w = tex.imgdata.write();
ERR_FAIL_COND(texsize * texsize * 2 > tex.imgdata.size());
for (int i = 0; i < texsize * texsize * 2; i++) {
ERR_FAIL_COND(texsize * texsize * color_size > tex.imgdata.size());
for (int i = 0; i < texsize * texsize * color_size; i++) {
w[i] = 0;
}
}
@ -561,7 +589,7 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
int ofs = ((i + tex_y + rect_margin) * tex.texture_size + j + tex_x + rect_margin) * 2;
int ofs = ((i + tex_y + rect_margin) * tex.texture_size + j + tex_x + rect_margin) * color_size;
ERR_FAIL_COND(ofs >= tex.imgdata.size());
switch (slot->bitmap.pixel_mode) {
case FT_PIXEL_MODE_MONO: {
@ -574,7 +602,14 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
wr[ofs + 0] = 255; //grayscale as 1
wr[ofs + 1] = slot->bitmap.buffer[i * slot->bitmap.pitch + j];
break;
// TODO: FT_PIXEL_MODE_LCD, FT_PIXEL_MODE_BGRA
case FT_PIXEL_MODE_BGRA: {
int ofs_color = i * slot->bitmap.pitch + (j << 2);
wr[ofs + 2] = slot->bitmap.buffer[ofs_color + 0];
wr[ofs + 1] = slot->bitmap.buffer[ofs_color + 1];
wr[ofs + 0] = slot->bitmap.buffer[ofs_color + 2];
wr[ofs + 3] = slot->bitmap.buffer[ofs_color + 3];
} break;
// TODO: FT_PIXEL_MODE_LCD
default:
ERR_EXPLAIN("Font uses unsupported pixel format: " + itos(slot->bitmap.pixel_mode));
ERR_FAIL();
@ -587,7 +622,7 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
//blit to image and texture
{
Ref<Image> img = memnew(Image(tex.texture_size, tex.texture_size, 0, Image::FORMAT_LA8, tex.imgdata));
Ref<Image> img = memnew(Image(tex.texture_size, tex.texture_size, 0, require_format, tex.imgdata));
if (tex.texture.is_null()) {
tex.texture.instance();
@ -605,9 +640,9 @@ void DynamicFontAtSize::_update_char(CharType p_char) {
}
Character chr;
chr.h_align = xofs / oversampling;
chr.v_align = ascent - (yofs / oversampling); // + ascent - descent;
chr.advance = advance / oversampling;
chr.h_align = xofs * scale_color_font / oversampling;
chr.v_align = ascent - (yofs * scale_color_font / oversampling); // + ascent - descent;
chr.advance = advance * scale_color_font / oversampling;
chr.texture_idx = tex_index;
chr.found = true;
@ -646,6 +681,7 @@ DynamicFontAtSize::DynamicFontAtSize() {
linegap = 1;
texture_flags = 0;
oversampling = font_oversampling;
scale_color_font = 1;
}
DynamicFontAtSize::~DynamicFontAtSize() {

1
scene/resources/dynamic_font.h
View file

@ -104,6 +104,7 @@ class DynamicFontAtSize : public Reference {
float linegap;
float rect_margin;
float oversampling;
float scale_color_font;
uint32_t texture_flags;