I discovered the problem with my corrupt bitmaps. The cross-compilier I'm using for my embedded system does not support the "#pragma pack()" directive that is used around the declaration of the BMPHEAD structure in the src/engine/devopen.c file. Consequently, byte-alignment was causing the bitmap header to be written incorrectly.
I fixed the problem by adding "__attribute__((packed))" to the BMPHEAD structure declaration, which is recognized by my compiler. I also had to make some modifications to the GdCaptureScreen() code (swapping x and y coordinates) to resolve other problems caused by the fact that I am running the nano-X server in "rotated" mode. (with the -R option.) Thanks to all who took the time to look into this. Steven Vahl Scientific Programmer ASD Inc. 2555 55th St., Ste. 100 Boulder, CO 80301 USA (303) 444-6522 ext. 127 steven.v...@asdi.com www.asdi.com -----Original Message----- From: Greg Haerr [mailto:g...@censoft.com] Sent: Thursday, January 28, 2010 10:42 AM To: Steven Vahl; nanogui@linuxhacker.org Subject: Re: [nanogui] Screenshots in Nano-X > I am using Nano-X on an embedded system with a 320 x 240 display and a > four-button keypad. Please describe the MWPF_TRUECOLOR specification for this device, the .bmp will vary depending upon it. > However, no bitmap editor I've tried has been able to open any of the > screen.bmp files that are created--they all say the file is corrupt. Please forward a .bmp to me, along with the spec for the framebuffer color format. Take a look at the source in src/engine/devopen.c::GdCaptureScreen() for more information. Regards, Greg NOTICE: This message (with any attachments) is confidential and may constitute privileged communication, and is intended only for the recipient(s) named herein. If you are not the intended recipient, or a person responsible for delivering this message to the intended recipient, you are hereby notified that any distribution, copying or dissemination of the information herein is strictly prohibited. If you have received this e-mail in error, please contact us immediately by telephone, facsimile, or email, and delete this e-mail from your computer system without retaining a copy. --------------------------------------------------------------------- To unsubscribe, e-mail: nanogui-unsubscr...@linuxhacker.org For additional commands, e-mail: nanogui-h...@linuxhacker.org
