void EditorFont::initialize() {
g_error = FT_Init_FreeType(&g_library);
if (g_error) {
Instances::get_pGlobal()->get_pCore()->quit();
} else {
g_error = FT_New_Face(g_library,"./content/Gargoyles.ttf",0,&g_face);
if (g_error) {
Instances::get_pGlobal()->get_pCore()->quit();
} else {
m_pFont = new Font();
m_pGlyph = new Glyph();
Uint8* pixels = 0;
Uint16 width; Uint16 height;
Uint16 glyphpixels = 0;
g_error = FT_Set_Char_Size(g_face,32*64,0,0,0);
if (g_error) {
Instances::get_pGlobal()->get_pCore()->quit();
} else {
for (Uint16 j=0; j<256; j++) {
g_error = FT_Load_Char(g_face,(Uint8)j,FT_LOAD_RENDER);
if (g_error) {
Instances::get_pGlobal()->get_pCore()->quit();
} else {
width = 32;
height = 32;
// setting alpha to 0 everywhere
for (Uint32 i=0; i<width*height; i++) {
m_pFont->set_pixel(255,255,255,0,
i%width, i/width,
(Uint8)j);
}
// setting the gray-values of the bitmap as alpha values
for (Uint32 i=0; i<g_face->glyph->bitmap.rows*
g_face->glyph->bitmap.width; i++) {
m_pFont->set_pixel(255,255,255,
g_face->glyph->bitmap.buffer,
((i%g_face->glyph->bitmap.width)+1),
((i/g_face->glyph->bitmap.width))
/* !!! Here is the value that has to be adjusted manually for different fonts !!! : */
+ 26
- g_face->glyph->bitmap_top,
(Uint8)j);
}
}
glyphpixels = 0;
}
m_pFont->export_font("./content/gargoyles.tga");
}
}
}
}
Freetype2 rendering to texture
Author
Hi, I asked this a while ago in the forum for beginners ... but the problem could not be solved then.
Has anybody here written code that renders the ascii-letters of a font to a texture?
The problem that I'm running into is that the vertical positioning doesn't work properly.
I want the letters in the top left corner, but moved down depending on the bitmap_top value.
With the code below they are moved too far down and I have to change a value manually.
I need a way to do the vertical positioning inside the quad automatically.
Can anybody help?
This topic is closed to new replies.
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