qemu: enable virglrenderer and glx options subject to 'opengl' DISTRO_FEATURE

Note that to actually use accelerated GL passthrough, there are two options

1) a suitable frontend need to be also enabled - gtk+ and SDL both seem to work well.
Previously I struggled to make SDL work, but now it seems fine.

2) it is also possible to render off-screen with -display egl-headless option,
and see the output with a VNC viewer (for which, qemu needs to be started
with a VNC server):

$ runqemu kvm egl-headless publicvnc

(From OE-Core rev: 662c688e635f4490aac0d6d34ce7a7b31d73f5c5)

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 7 insertions, 2 deletions

diff --git a/meta/recipes-devtools/qemu/qemu-system-native_4.2.0.bb b/meta/recipes-devtools/qemu/qemu-system-native_4.2.0.bb
index d83ee59375..7394385d30 100644
--- a/meta/recipes-devtools/qemu/qemu-system-native_4.2.0.bb
+++ b/meta/recipes-devtools/qemu/qemu-system-native_4.2.0.bb
@@ -9,7 +9,9 @@ DEPENDS = "glib-2.0-native zlib-native pixman-native qemu-native bison-native"
 
 EXTRA_OECONF_append = " --target-list=${@get_qemu_system_target_list(d)}"
 
-PACKAGECONFIG ??= "fdt alsa kvm"
+PACKAGECONFIG ??= "fdt alsa kvm \
+    ${@bb.utils.contains('DISTRO_FEATURES', 'opengl', 'virglrenderer glx', '' ,d)} \
+"
 
 # Handle distros such as CentOS 5 32-bit that do not have kvm support
 PACKAGECONFIG_remove = "${@'kvm' if not os.path.exists('/usr/include/linux/kvm.h') else ''}"
diff --git a/meta/recipes-devtools/qemu/qemu_4.2.0.bb b/meta/recipes-devtools/qemu/qemu_4.2.0.bb
index f0c1daabe1..a4018cc448 100644
--- a/meta/recipes-devtools/qemu/qemu_4.2.0.bb
+++ b/meta/recipes-devtools/qemu/qemu_4.2.0.bb
@@ -21,5 +21,8 @@ do_install_append_class-nativesdk() {
 PACKAGECONFIG ??= " \
     fdt sdl kvm \
     ${@bb.utils.filter('DISTRO_FEATURES', 'alsa xen', d)} \
+    ${@bb.utils.contains('DISTRO_FEATURES', 'opengl', 'virglrenderer glx', '' ,d)} \
+"
+PACKAGECONFIG_class-nativesdk ??= "fdt sdl kvm \
+    ${@bb.utils.contains('DISTRO_FEATURES', 'opengl', 'virglrenderer glx', '' ,d)} \
 "
-PACKAGECONFIG_class-nativesdk ??= "fdt sdl kvm"