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compositor-drm: Introduce drm_plane_is_available
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>
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@ -657,9 +657,25 @@ drm_output_update_msc(struct drm_output *output, unsigned int seq);
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static void
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drm_output_destroy(struct weston_output *output_base);
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static int
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drm_plane_crtc_supported(struct drm_output *output, struct drm_plane *plane)
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/**
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* Returns true if the plane can be used on the given output for its current
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* repaint cycle.
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*/
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static bool
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drm_plane_is_available(struct drm_plane *plane, struct drm_output *output)
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{
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assert(plane->state_cur);
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/* The plane still has a request not yet completed by the kernel. */
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if (!plane->state_cur->complete)
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return false;
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/* The plane is still active on another output. */
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if (plane->state_cur->output && plane->state_cur->output != output)
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return false;
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/* Check whether the plane can be used with this CRTC; possible_crtcs
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* is a bitmask of CRTC indices (pipe), rather than CRTC object ID. */
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return !!(plane->possible_crtcs & (1 << output->pipe));
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}
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@ -2024,12 +2040,7 @@ drm_output_prepare_overlay_view(struct drm_output_state *output_state,
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if (p->type != WDRM_PLANE_TYPE_OVERLAY)
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continue;
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if (!drm_plane_crtc_supported(output, p))
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continue;
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if (!p->state_cur->complete)
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continue;
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if (p->state_cur->output && p->state_cur->output != output)
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if (!drm_plane_is_available(p, output))
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continue;
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state = drm_output_state_get_plane(output_state, p);
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