On Sun, 1 Jun 2008 10:50:05 +0800 "y.volta" <[EMAIL PROTECTED]> wrote: > Hi, > > I noticed that, /font/manager.c:51: > > file = grub_file_open (filename); > > so, we can only use pure font file, this will need more than 1MB > bytes for font file, and more time to load it into memory. > > well, how about change it to: > > file = grub_gzfile_open (filename, 1);
Are you noticing that it is slow to load the font into memory? Currently the whole font is not loaded at once, but rather the glyphs are loaded on demand, as they are needed, so opening the font file should be fairly fast. You probably don't want to spend time working on the existing GRUB 2 'PFF' font code since I am working on creating a new font file format for GRUB, and I will remove the limitation on size of 16 pixels wide. Using gzip on the whole file is not a great option since we want random access to the file contents since we only need to read in the glyphs that are used, which in general, for a font covering most of Unicode, is a very small proportion of the characters in the file. We could find ways to compress the font, but simply gzipping the font file is not a good option when you don't need to read the whole font anyway. Perhaps there are better compression techniques we can use for the font that will support random access to the font, but we should determine whether there is a need for compression (or if compression will provide a performance benefit). Regards, Colin
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