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| Subject:
Non-clipping bitmap output
From: Peter Dufault ####@####.#### Date: 26 Sep 2001 19:52:08 -0000 Message-Id: <20010926155132.A57365@hda.hda.com> I'm trying to use a device at the other end of a serial line, so I'm interested in enabling more acceleration for carefully restricted applications. I'd like to optimize the non-clipping text string case so that when a text string is not clipped I can send a binary bitmap for that rectangular region in a single operation. Some work was started in a NOTUSED portion of gen_drawtext. I'm going to try to pick up on that. Ideally I'd like to build the text string bitmap "locally" and then use gen_drawbitmap to blast out the whole string in one chunk, but for starters I'll do the character at a time begun there. Is there any further work on this? Peter -- Peter Dufault ####@####.#### Realtime development, Machine control, HD Associates, Inc. Fail-Safe systems, Agency approval | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Subject:
Re: [nanogui] Non-clipping bitmap output
From: "Greg Haerr" ####@####.#### Date: 26 Sep 2001 20:46:16 -0000 Message-Id: <019601c146cd$fe5cd020$6817dbd0@censoft.com> : I'd like to optimize the non-clipping text string case so that when : a text string is not clipped I can send a binary bitmap for that rectangular : region in a single operation. : : Some work was started in a NOTUSED portion of gen_drawtext. I'm going : to try to pick up on that. Ideally I'd like to build the text string : bitmap "locally" and then use gen_drawbitmap to blast out the whole : string in one chunk, but for : starters I'll do the character at a time begun there. Yes, building a single bitmap and drawing it once should speed things up. Just remember that the font engine allows different renderers, so, to do this correctly, we may need an entry point that allows the renderer to draw into a known location of a passed BITMAP. Or, if the renderer supports string rendering, then the entire renderering may have to happen at the lowest level. : : Is there any further work on this? Not that I'm aware of. Let me know how I can help. Regards, Greg : : Peter : : -- : Peter Dufault ####@####.#### Realtime development, Machine control, : HD Associates, Inc. Fail-Safe systems, Agency approval : : --------------------------------------------------------------------- : To unsubscribe, e-mail: ####@####.#### : For additional commands, e-mail: ####@####.#### : | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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