Fix Weston IVI-Shell layout on Renesas R-Car E2 Silk

On Renesas Silk boards, when running weston ivi-shell,
layout is too small and black borders are visible.
This is due to the presence of a VGA adapter, which
ivi-shell wrongly queries for resolution size values.

Work around this ; this patch is not upstreamed due to
current work being done on ivi-shell multiscreen support
(https://github.com/ntanibata/weston-ivi-shell/commits/
multiscreen_feature_03).

PS : although this patch is primarily intended for Silk,
we put it into "meta-agl" because it is a general-purpose
fix. It would also fix the issue on laptops having VGA
adapters, e.g..

Change-Id: I25447b54d53eb8f8b7261903c0699a53c81790f8
Signed-off-by: Manuel Bachmann <mbc@iot.bzh>

1 files changed, 49 insertions, 0 deletions

diff --git a/meta-ivi-common/recipes-graphics/wayland/weston-ivi-shell/0002-IVI-Shell-use-primary-screen-for-resolution.patch b/meta-ivi-common/recipes-graphics/wayland/weston-ivi-shell/0002-IVI-Shell-use-primary-screen-for-resolution.patch
new file mode 100644
index 000000000..2df9f4aed
--- /dev/null
+++ b/meta-ivi-common/recipes-graphics/wayland/weston-ivi-shell/0002-IVI-Shell-use-primary-screen-for-resolution.patch
@@ -0,0 +1,49 @@
+From: Manuel Bachmann <manuel.bachmann@iot.bzh>
+Date: Thu, Nov 5 10:17:00 2015 +0000
+Subject: ivi-shell: use primary screen for resolution values
+
+Screen resolution values (width, height) are always grabbed
+from the first screen, n.0, which can be a bad choice if it
+is not the one really used as main display.
+
+This mostly happens on hardware with a VGA adapter, such as
+laptops or Renesas R-Car E2 "Silk", and prevents correct
+layout stretching (black borders).
+
+Discover the primary screen and use its values.
+
+Signed-off-by: Manuel Bachmann <manuel.bachmann@iot.bzh>
+---
+
+--- a/ivi-shell/hmi-controller.c	2015-11-05 09:57:55.740942450 +0000
++++ b/ivi-shell/hmi-controller.c	2015-11-05 10:00:23.545912494 +0000
+@@ -676,6 +676,8 @@
+ 	struct link_layer *tmp_link_layer = NULL;
+ 	int32_t panel_height = 0;
+ 	struct hmi_controller *hmi_ctrl = MEM_ALLOC(sizeof(*hmi_ctrl));
++	struct weston_output *output = NULL;
++	int i = 0;
+ 
+ 	wl_array_init(&hmi_ctrl->ui_widgets);
+ 	hmi_ctrl->layout_mode = IVI_HMI_CONTROLLER_LAYOUT_MODE_TILING;
+@@ -684,11 +686,19 @@
+ 
+ 	ivi_controller_interface->get_screens(&screen_length, &pp_screen);
+ 
+-	iviscrn = pp_screen[0];
++	/* find primary screen */
++	for (i = 0; i < screen_length; i++) {
++		iviscrn = pp_screen[i];
++		output = ivi_controller_interface->screen_get_output(iviscrn);
++		if (output->x == 0)
++			break;
++	}
+ 
+ 	ivi_controller_interface->get_screen_resolution(iviscrn, &screen_width,
+ 					 &screen_height);
+ 
++	iviscrn = pp_screen[0];
++
+ 	/* init base ivi_layer*/
+ 	hmi_ctrl->base_layer.x = 0;
+ 	hmi_ctrl->base_layer.y = 0;