nanogui: problems with picture drawing in Nano-X, nxlib and Fltk-UTF8 1.1.6
Subject:
problems with picture drawing in Nano-X, nxlib and Fltk-UTF8 1.1.6
From:
####@####.####
Date:
20 Jun 2006 13:10:24 +0100
Message-Id: <E1Fsf3i-0006Qz-US@www12.emo.freenet-rz.de>
Hello,
i have a problem with myself written graphic driver and picture drawing and i think bitblitting to.
My self written graphicdriver should be adapted for a special 24 bit VGA (640 x 480)display.
The driver is based on thefblin24.c driver whit a mapped memory like a frame buffer.
I use Fltk-UTF-8 1.1.6whit nxlib and the Nano-X server.
And now my problem:
When i don't set thePSF_HAVEBLIT flag, no images where drawn but all other graphicelements like fonts and buttons where drawn correctly.
On the other hand, when iset the PSF_HAVEBLIT flag in my graphic driver, the server crashes with the following error:
///-------------------------------------------------------
nxclient: bad readblock-1, errno 104
nxclient 755: Corruptedpacket
[1]+ Segmentation fault ./nano-X
///-------------------------------------------------------
The server crashes onlywhen i use an application whit an picture (bitmap) like button iconore other. Whit an application whiteout pictures the server workscorrectly and draw all things to the display!
Is the PSF_HAVEBLIT set,the picture is written correct to the( bit blitting) backgroundmemory at position x,y 0,0 after this the server crashes whit theabove-named error.
The struct PSD psd; isfilled by the driver whit the following parameters:
psd->xres:640
psd->xvirtres:640
psd->yres:480
psd->yvirtres:480
psd->planes:1
psd->bpp:24
psd->linelen:640
psd->size:921600
psd->ncolors:16777216
psd->pixtype:4
psd->flags:5
psd->addr:(mapped graphic address)
psd->portrait:0
psd->attr:0
psd->flags= PSF_SCREEN | PSF_HAVEBLIT;
psd->portrait= MWPORTRAIT_NONE;
psd->pixtype= MWPF_TRUECOLOR888
and pointers to thedrawing functions like DrawPixel, DrawHLine, Blit(), .... are alsoset.
My opinion is that somePSD parameters are seated wrong from me.
Is the psd->linelen =640 to large?
Can any body help me ?
