[PATCH weston] compositor-drm: fix hw cursor positioning

[Pekka Paalanen]

From: Pekka Paalanen <pekka.paalanen at collabora.co.uk>

Fix a regression introduced by be428b3825043cbcc676d2526fe6213bea7f676a
which accidentally removed the global-to-output space conversion.

Signed-off-by: Pekka Paalanen <pekka.paalanen at collabora.co.uk>
Cc: Derek Foreman <derekf at osg.samsung.com>
Cc: Daniel Stone <daniels at collabora.com>
---
 src/compositor-drm.c | 7 +++++++
 1 file changed, 7 insertions(+)

Hi Derek,

if you want to fix this with some matrix stuff instead, that would be
cool. This fixes my use case at least.

diff --git a/src/compositor-drm.c b/src/compositor-drm.c
index 6575847..4f9bbaf 100644
--- a/src/compositor-drm.c
+++ b/src/compositor-drm.c
@@ -1196,6 +1196,13 @@ drm_output_set_cursor(struct drm_output *output)
 	}
 
 	weston_view_to_global_float(ev, 0, 0, &x, &y);
+
+	/* From global to output space, output transform is guaranteed to be
+	 * NORMAL by drm_output_prepare_cursor_view().
+	 */
+	x = (x - output->base.x) * output->base.current_scale;
+	y = (y - output->base.y) * output->base.current_scale;
+
 	if (output->cursor_plane.x != x || output->cursor_plane.y != y) {
 		if (drmModeMoveCursor(b->drm.fd, output->crtc_id, x, y)) {
 			weston_log("failed to move cursor: %m\n");
-- 
2.4.10