Re: Multiple instances and RAC
On Tue, 23 Nov 2004 [EMAIL PROTECTED] wrote: I'm trying to set up a multihead/multiuser system using multiple instacnes of XFree86, but I've got some problems when using some cards (like dual-head video cards or ATI Rage). When using multi-head with only one instance of xfree I see that RAC can handle those problems. I think I need to modify RAC module so it's always loaded and I make the multiples XFree instances share some info about resources being used. I've seen RAC module source code (hw/xfree86/rac/xf86RAC.c), but there are just some wrapper functions there. Where do I need to look/modify? Is there any way better than modifying the RAC module? The bulk of what you are looking for is in hw/xfree86/common/, spcifically xf86Bus.c xf86pciBus.c. However, bear in mind that this code really wasn't designed with multiple server instances in mind. Marc. +--+---+ | Marc Aurele La France | work: 1-780-492-9310 | | Computing and Network Services | fax:1-780-492-1729 | | 352 General Services Building | email: [EMAIL PROTECTED] | | University of Alberta +---+ | Edmonton, Alberta | | | T6G 2H1 | Standard disclaimers apply| | CANADA | | +--+---+ XFree86 developer and VP. ATI driver and X server internals. ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
Handling multi-monitor configuration
I've been reworking the multi-monitor configuration support that I started a while ago, and I have a patch relative to the latest XFree86 snapshot (4.4.99.17) that implements it. This provides a better way of handling the multi-monitor configuration than the current mergedfb methods. It does so by allowing multiple Monitor entries in the Screen sections, and allowing per-Monitor Display subsections for providing per-monitor parameters. The patch implements the configuration changes and some helper functions that drivers can use to access the new data. The implementation is backward-compatible in the sense that existing drivers will continue to function without knowledge of these changes. An example of how the configuration looks is as follows: Section Screen Identifier Multi-Monitor Demo Screen Device Multi-Monitor Device 1 Monitor 1 My Monitor Monitor 2 My Monitor Monitor 3 My Other Monitor DefaultDepth 24 Option Screen Option Value SubSection Display Monitor 1 Modes 1024x768 800x600 Virtual 1024 768 Option MonitorOption val1 EndSubSection SubSection Display Monitor 2 Modes 1280x1024 Option MonitorOption val2 EndSubSection SubSection Display Monitor 3 Modes 1600x1200 Option MonitorOption val3 EndSubSection SubSection Display # Screen-wide display parameters EndSubSection EndSection Although my broader goal is to eliminate the need for complete static configuration, this patch also serves to provide associations between the relevant data internally in a more consistent way than is used for the current multi-monitor solutions. The patch is available at: http://www.x-oz.com/multimonconfig-1.0.diff.gz Comments and feedback are welcome. David -- David Dawes X-Oz Technologies www.XFree86.org/~dawes www.x-oz.com ___ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
DGA and tearing effects
Hi guys! We're developing a DGA program that render full screen at 1280x1024 16
bpp 15fps the video image read from a sony camera, but we're experiencing
tearing artifacts during rendering. This is a part of the code that copies the
data to the frame buffer:
void CAM_APP::DisplayImage_NoPartial(unsigned char* offset)
{
register int j;
register unsigned long caddr = (unsigned long) offset;
for(j=0; jiSize; caddr+=2,j++){
*( (unsigned short*) caddr ) = sTable[g_pBuf[j]];
}
}
Where the offset is the start of the buffer destination, and g_pBuf is the data
captured from the camera. we've tried copying the data during vertical resync
but we're still experiencing tearing on the image. We're using an AMD gx2 geode
processor w/ 128 mb ram and 8mb vram. I would like to ask your help in removing
the tearing artifacts. Thanks.
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