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Re: Analysis of redisplay performance on Windows
From: |
Chong Yidong |
Subject: |
Re: Analysis of redisplay performance on Windows |
Date: |
Sun, 27 Jul 2008 21:18:28 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) |
Jason Rumney <address@hidden> writes:
> One difference between Emacs 22 and 23 is that we compute glyph
> indexes properly in Emacs 23, while on 22 we use unicode code
> points. Since we call font->encode_char once per character rather than
> for a whole run, the overhead of selecting fonts into the GC is
> multiplied. As I suggested in my earlier email, new functions in the
> font backend interface to select a font for working with and releasing
> it when done, would help, as we could then skip doing this in
> functions like encode_char and text_extents.
Could you suggest precisely what interface we need? I.e., could you
suggest function names and rought docstrings?
- Re: Analysis of redisplay performance on Windows, Chong Yidong, 2008/07/26
- Re: Analysis of redisplay performance on Windows, Jason Rumney, 2008/07/27
- Re: Analysis of redisplay performance on Windows, Chong Yidong, 2008/07/27
- Re: Analysis of redisplay performance on Windows, Jason Rumney, 2008/07/27
- Re: Analysis of redisplay performance on Windows, Chong Yidong, 2008/07/27
- Re: Analysis of redisplay performance on Windows, Jason Rumney, 2008/07/27
- Re: Analysis of redisplay performance on Windows,
Chong Yidong <=
- Re: Analysis of redisplay performance on Windows, Adrian Robert, 2008/07/27
- Re: Analysis of redisplay performance on Windows, Chong Yidong, 2008/07/28
- Re: Analysis of redisplay performance on Windows, Jason Rumney, 2008/07/28
- Re: Analysis of redisplay performance on Windows, Kevin Yu, 2008/07/27
- Re: Analysis of redisplay performance on Windows, YAMAMOTO Mitsuharu, 2008/07/28
- Re: Analysis of redisplay performance on Windows, YAMAMOTO Mitsuharu, 2008/07/28
- Re: Analysis of redisplay performance on Windows, Jason Rumney, 2008/07/30