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[Freetype] Getting black bitmaps - why?
From: |
Paul Miller |
Subject: |
[Freetype] Getting black bitmaps - why? |
Date: |
Wed, 21 Nov 2001 11:04:39 -0600 |
This is very frustrating. I've pretty much duplicated most of what the ftgl
library does to make texture-based glyphs, but all I get is black bitmaps
for the characters. Here is basically what I'm doing (after opening the face):
long point_size = 72;
long resolution = 72;
::FT_Set_Char_Size( _face, 0L, point_size * 64, resolution, resolution );
// code is a unicode character - the letters "A" through "Z" for my test
FT_UInt glyph_index = ::FT_Get_Char_Index( _face, code );
FT_Error error = ::FT_Load_Glyph( _face, glyph_index, FT_LOAD_NO_HINTING );
FT_Glyph glyph;
error = ::FT_Get_Glyph( _face->glyph, &glyph );
error = ::FT_Glyph_To_Bitmap( &glyph, ft_render_mode_normal, 0, 1 );
if ( error != 0 || glyph->format != ft_glyph_format_bitmap )
return; /// +++ ERROR +++
FT_BitmapGlyph bmg = (FT_BitmapGlyph)glyph;
const FT_Bitmap *src = &bmg->bitmap;
// copy the bitmap over
for ( int y = 0; y < src->rows; y++ ) {
const unsigned char *src_buf = ( src->buffer + ( y * src->pitch ) );
unsigned char *dest = dest_image.getRow( x_offset, y_offset + y );
::memcpy( dest, src_buf, src->width );
}
::FT_Done_Glyph( glyph );
None of these functions returns an error, and the "black box" that is
filled looks like it has the correct size, but there is no glyph in there.
Any ideas?
Am I missing some magical "FT_PLEASE_RENDER_I_MEAN_IT" flag?
--
Paul T. Miller | VP of Engineering, Profound Effects, Inc. |
http://www.profoundeffects.com
- [Freetype] PANOSE, and other ways to map fonts correctly [Re: Konqueror double-bidi?], Vadim Plessky, 2001/11/12
- Re: [Freetype] PANOSE, and other ways to map fonts correctly [Re: Konqueror double-bidi?], David Turner, 2001/11/16
- Re: [Freetype] PANOSE, and other ways to map fonts correctly [Re: Konqueror double-bidi?], Vadim Plessky, 2001/11/16
- [Freetype] Re: PANOSE, and other ways to map fonts correctly [Re: Konqueror double-bidi?], Alan Shutko, 2001/11/16
- Re: [Freetype] Re: PANOSE, and other ways to map fonts correctly [Re: Konqueror double-bidi?], Vadim Plessky, 2001/11/17
- Re: [Freetype] Re: PANOSE, and other ways to map fonts correctly [Re: Konqueror double-bidi?], Leonard Rosenthol, 2001/11/18
- Re: [Freetype] Re: PANOSE, and other ways to map fonts correctly, Vadim Plessky, 2001/11/19
- Re: [Freetype] Re: PANOSE, and other ways to map fonts correctly, Leonard Rosenthol, 2001/11/19
- [Freetype] Getting black bitmaps - why?,
Paul Miller <=
- Re: [Freetype] Getting black bitmaps - why?, Paul Miller, 2001/11/23