nanogui: GrBitmap & LineWidth
Subject:
答复: [nanogui] GrBitmap & LineWidth
From:
####@####.####
Date:
2 Nov 2006 06:25:20 +0000
Message-Id: <EBED726DEEB444468EA498F0EC94D6F70528D00B@mail02.HOLD.FOUNDER.COM>
Mr. Greg Haerr,
Thank you for your reply! :-)
Question 2 is OK, but another question arising when using GrDrawImageBits for 24 bits color images:
GR_IMAGE_HDR hdr;
What value should we set to hdr.transcolor?
If (hdr.transcolor = GR_RGB(0, 0, 0) or = -1), the brightest colors of image is displayed wrong;
If (hdr.transcolor = GR_RGB(255, 255, 255)), the darkest colors of image is displayed wrong.
Jia aixia
-----邮件原件-----
发件人: Greg Haerr ####@####.####
发送时间: 2006年10月28日 9:19
收件人: JiaAiXia(贾爱霞); ####@####.####
主题: Re: [nanogui] GrBitmap & LineWidth
> 1. GrSetGCLineWidth() is OK? It does’t work when I use this functiong to
> change line stroke width, why?
I'm not aware of a GrSetGCLineWidth function. What version
are you running? Line stroke widths aren't supported
yet.
2. When I use GrBitmap, the image is distorted(But when use GrDrawImageBits,
it’s not distorted). I have considered the 16bits and 32 bits align. Can
GrBitmap work?
Yes, GrBitmap works. It doesn't use an image structure,
just a 16-bit aligned array of FG/BG bits. Likely your image
isn't aligned to a 16-bit boundary. 32 bit boundary
won't work.
3. In nano-X, Fill Mode is supported or not? It seems can’t work.
Yes, look at the demo grdemo.sh, this should show the fill
modes.
Regards,
Greg
