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compositor-drm: Introduce drm_plane_is_available

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Helper for the pattern of checking whether or not a plane can be used on
an output during the current repaint cycle.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Daniel Stone 2017-10-07 12:59:02 +01:00
parent bc15f684f2
commit 5ff289a170
1 changed files with 19 additions and 8 deletions
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27
libweston/compositor-drm.c
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@ -657,9 +657,25 @@ drm_output_update_msc(struct drm_output *output, unsigned int seq);
static void
drm_output_destroy(struct weston_output *output_base);
static int
drm_plane_crtc_supported(struct drm_output *output, struct drm_plane *plane)
/**
* Returns true if the plane can be used on the given output for its current
* repaint cycle.
*/
static bool
drm_plane_is_available(struct drm_plane *plane, struct drm_output *output)
{
assert(plane->state_cur);
/* The plane still has a request not yet completed by the kernel. */
if (!plane->state_cur->complete)
return false;
/* The plane is still active on another output. */
if (plane->state_cur->output && plane->state_cur->output != output)
return false;
/* Check whether the plane can be used with this CRTC; possible_crtcs
* is a bitmask of CRTC indices (pipe), rather than CRTC object ID. */
return !!(plane->possible_crtcs & (1 << output->pipe));
}
@ -2024,12 +2040,7 @@ drm_output_prepare_overlay_view(struct drm_output_state *output_state,
if (p->type != WDRM_PLANE_TYPE_OVERLAY)
continue;
if (!drm_plane_crtc_supported(output, p))
continue;
if (!p->state_cur->complete)
continue;
if (p->state_cur->output && p->state_cur->output != output)
if (!drm_plane_is_available(p, output))
continue;
state = drm_output_state_get_plane(output_state, p);