On Tue, Sep 30, 2003 at 07:21:14PM +0200, Jacek Rosik wrote: > W liście z wto, 30-09-2003, godz. 18:52, Alan Hourihane pisze: > > In radeon_dri.c in the TransitionTo2d/3d there's some offscreen memory > > allocation going on for info->backArea and info->depthTexArea. > > > > The trouble is - I can't see anywhere where these allocations are actually > > used. > > > > Are these leftovers ?? > > > > Alan. > Hi > > These are used used by 3D driver back depth/stencil buffers and texture > memory. This memory is reserved so it wont get overwritten by 2D driver. > It is used by means of RADEONInfoRec::frontOffset, > RADEONInfoRec::backOffset etc... It can be freed if no 3D is active. Not from what I can see. The allocation of back, depth/stencil is done in radeon_driver.c before passing what's left onto the FBManager. These areas are pointed to by info->backOffset, info->depthOffset and info->textureOffset.
I don't see what purpose info->backArea and info->depthTexArea have. > BTW: As I'am working on stereo now I need to allocate additional > buffers for left eye buffers. Currently I allocate them whenever > TransitionTo3D is called, but I think it would be quite useful if I > would add TransitionToStereo/Mono functions and allocate/free them then. > I looked at DRICreatedrawable code but I have no clue how to check > whether drawable is stereo (if it does make sense). I think I can do it > by checking Visual, but no clue how to get it. Can someone give me some > clues. Look in the CreateContext routines to see how to check visuals. Alan. ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
