Ilyes- It should not introduce any distortion. Instead it should have the effect of making the entire "scene" appear closer/farther.
-Tim -----Original Message----- From: Ilyes Gouta [mailto:ilyes.go...@gmail.com] Sent: Friday, July 15, 2011 5:49 PM To: Tim (Steven) Ross Cc: directfb-dev Subject: Re: [directfb-dev] Stereoscopy: DSCAPS_STEREO primary surface and IDirectFBDisplayLayer::SetStereoDepth() Hi Tim, > In this case where the contents of the L & R are already rendered with the > parallax inherent in the rendered images, the SetStereoDepth() function is > not required. You can either set it to 0 or not call it at all (default is > 0). The API is available in your scenario so that you can add additional > depth to the layer contents (e.g. to make it appear in front/behind another > layer that also has parallax). The API also exists so that a L/R mono layer > that has a single buffer can be made to appear in front/behind the display > screen. Yes, indeed. > The API is available in your scenario so that you can add additional depth to > the layer contents > (e.g. to make it appear in front/behind another layer that also has parallax). Would calling SetStereoDepth() then introduce a kind of distortion on the rendered L/R buffers (with the inherent parallax and scene depth) which would lower the quality of the final perceived picture by the user? -Ilyes > > -Tim > > -----Original Message----- > From: directfb-dev-boun...@directfb.org > [mailto:directfb-dev-boun...@directfb.org] On Behalf Of Ilyes Gouta > Sent: Friday, July 15, 2011 5:09 AM > To: directfb-dev > Subject: [directfb-dev] Stereoscopy: DSCAPS_STEREO primary surface and > IDirectFBDisplayLayer::SetStereoDepth() > > Hi, > > I'm looking at the new stereoscopy API, part of the new DirectFB-1.5 > release (and getting ready to implement stuff) and I keep thinking > about this use-case where the application is DFSCL_FULLSCREEN and has > a stereo capable primary layer/surface. The application can render its > own L/R buffers straight to the primary surface (OpenGL content or > already rendered buffers from a file, such as JPEG stereo). All that > rendering is performed using a local and specific settings, such as > for OpenGL the (virtual) L/R camera positions, projection and model > view matrices (which doesn't necessarily reflect/match the viewer's > viewing setup) and an already kind of "hard-coded" horizontal parallax > for the JPEG stereo buffers. > > I'd like to ask what would be the usefulness of the > IDirectFBDisplayLayer::SetStereoDepth() in this use-case? Would it be > required so that to let the user to adjust the depth appreciation and > viewing experience? > > -Ilyes > _______________________________________________ > directfb-dev mailing list > directfb-dev@directfb.org > http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev > > > _______________________________________________ directfb-dev mailing list directfb-dev@directfb.org http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
