From mboxrd@z Thu Jan 1 00:00:00 1970 Mime-Version: 1.0 (Apple Message framework v753) In-Reply-To: References: Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <19FFCFC6-E151-4A65-8DE6-B3DB3231C312@mac.com> Content-Transfer-Encoding: 7bit From: Pietro Gagliardi Subject: Re: [9fans] How to read/write pixels from Memimage Date: Sun, 27 Jan 2008 20:08:46 -0500 To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu> Topicbox-Message-UUID: 3ae96a72-ead3-11e9-9d60-3106f5b1d025 Another question: in RGB24, how are colors composited: 0x00RRGGBB or 0xRRGGBB00? I can't seem to get a picture that is solid red; just a wacky line art picture. On Jan 27, 2008, at 7:18 PM, Pietro Gagliardi wrote: > It's up. > > On Jan 27, 2008, at 6:44 PM, Pietro Gagliardi wrote: > >> Okay, I just found out that division by zero meant a black pixel >> would be placed, so I am going to add that and upload a new version. >> >> On Jan 27, 2008, at 1:05 PM, Skip Tavakkolian wrote: >> >>>> The code led me to confusion, so I just decided to use wordaddr. It >>>> works properly now, and my Pico is now up at /n/sources/contrib/ >>>> pietro/pico9.tgz (note the 9). Details are in README.Plan9, test >>>> files are in /lib/face/. >>> >>> some book examples are failing: >>> >>> cpu% 8.out >>> 1: new[x,y] = x % y >>> 8.out 181613: suicide: sys: trap: divide error pc=0x000023fd >>> >> >