For those interested, I did learn a lot more on this and eventually solve the problem. The surprising part is that this applies to developers NOT building hires Sony versions!
- Sony has a 'HiRes Assist' option in Prefs. It attempts to put all older apps (160x160) into a hires mode. It does this by replacing fonts, mostly. - Although the option has strong help notes in it saying some apps, particularly games, may not work right (and even crash), users are still going to enable this. There is a list of applications by which users can disable it for individual apps, as a workaround. - Although the primary function of HiRes Assist is to replace fonts, there are a number of known bugs (documented at the Sony development site: http://www.us.sonypdadev.com/top.html, which is open to all) related to drawing bitmaps with this feature enabled. - In particular, drawing 1 bpp bitmaps (thanks to a post long ago by Aaron A.) in hires mode (be it by HiRes Assist or otherwise) can crash the device badly. In my case, it was drawing in 'overlay' mode that was the specific bug I was hitting. - Although I edited my bitmaps to be 4 bpp, I forgot to change the PILRC resource tags to 'BITMAPCOLOUR' from BITMAP. PILRC will convert a multi-color bitmap to a BW bitmap in the resource otherwise. Hence, still making the bug occur. There are a bunch of documented issues with hires, drawing bitmaps, fonts, etc. that are documented at the Sony site. And to date, Sony has not released device patches or ROM updates. So developers, beware! Dan Pronovost [EMAIL PROTECTED] DeepNet Technologies www.deepnettech.com ----- Original Message ----- From: "DP" <[EMAIL PROTECTED]> To: "Palm Dev Forum" <[EMAIL PROTECTED]> Sent: Wednesday, January 29, 2003 10:46 AM Subject: Issue with drawing bitmaps on some Sony devices > Hello: > > I've recently added color support to my software (using > only basic OS 3.5 API functionality), and I'm getting > some users reporting strange screen drawing > problems on certain Sony devices, specifically > the T615C. > > I've seen some postings here indicating that this > is a known hardware bug, related to the drawing > some kinds of bitmaps (possibly 1 bpp bitmaps). > > Well, I've tried working around this problem > in a number of ways, including changing all bitmaps > to 4 bpp. No luck. I thought it was only related to > using 'Overlay' mode in drawing (which I could work > around), but now I have users reporting problems > where I don't use overlay mode. > > I've tried getting help from Sony... they have no patches > or ROM updates related to this. > > Anybody know the work around for the problem? > Or how/where to get connected to the right place > in Sony to get help? A developer support forum > specifically for Sonys? > > Thanks, > > Dan Pronovost > [EMAIL PROTECTED] > DeepNet Technologies > www.deepnettech.com > > > > -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
