On Thu, Jan 16, 2014 at 1:14 PM, Peter Teoh <htmldeveloper@gmail.com> wrote:
In general how it worked is explained here:


Not sure which is the name of your video card, but I think in general all the page flip API should have access to the scan buffer (see link above).   For Intel these are possible APIs
:


Thanks. I was trying to find out a generic way to access the scan out buffer. The page flip functions looks specific to hardware.
 

static void do_intel_finish_page_flip(struct drm_device *dev,
void intel_finish_page_flip(struct drm_device *dev, int pipe)
do_intel_finish_page_flip(dev, crtc);
void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
do_intel_finish_page_flip(dev, crtc);
void intel_prepare_page_flip(struct drm_device *dev, int plane)
* is also accompanied by a spurious intel_prepare_page_flip().
inline static void intel_mark_page_flip_active(struct intel_crtc *intel_crtc)

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Regards,
Peter Teoh

It is enough to have a way to get the content of scan out buffer instead of accessing it directly using a pointer.

Thanks for you help,
Sannu K