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ephyr: hostx_screen_init(): Fix bits_per_pixel and bytes_per_line 

When the depth of the Xephyr server matches that of the host X server,
Xephyr simply uses the buffer associated with the XImage as its
framebuffer. In this case, it is correct to get the bits_per_pixel and
bytes_per_line values returned from hostx_screen_init() from the XImage.

However, when the depth doesn't match the host, Xephyr uses a private
framebuffer that is periodically copied to the XImage. In this case,
the returned values of bits_per_pixel and bytes_per_line should be
those of the private framebuffer, not those of the XImage.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Soren Sandmann <ssp@redhat.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
This commit is contained in:
Søren Sandmann Pedersen 2013-10-21 16:58:54 -04:00 committed by Keith Packard
parent 55246b67b7
commit 97cf53cc2a
1 changed files with 6 additions and 3 deletions
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9
hw/kdrive/ephyr/hostx.c
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@ -695,9 +695,6 @@ hostx_screen_init(KdScreenInfo *screen,
malloc(scrpriv->ximg->stride * buffer_height);
}
*bytes_per_line = scrpriv->ximg->stride;
*bits_per_pixel = scrpriv->ximg->bpp;
if (scrpriv->win_pre_existing == None && !EphyrWantResize) {
/* Ask the WM to keep our size static */
xcb_size_hints_t size_hints = {0};
@ -717,10 +714,16 @@ hostx_screen_init(KdScreenInfo *screen,
scrpriv->win_height = height;
if (host_depth_matches_server(scrpriv)) {
*bytes_per_line = scrpriv->ximg->stride;
*bits_per_pixel = scrpriv->ximg->bpp;
EPHYR_DBG("Host matches server");
return scrpriv->ximg->data;
}
else {
*bytes_per_line = width * (scrpriv->server_depth >> 3);
*bits_per_pixel = scrpriv->server_depth;
EPHYR_DBG("server bpp %i", scrpriv->server_depth >> 3);
scrpriv->fb_data =
malloc(width * buffer_height * (scrpriv->server_depth >> 3));