runqemu: add options for enabling virgl GL acceleration

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

diff --git a/scripts/runqemu b/scripts/runqemu
index d171c4f894507cfa5e374886773bb4dbc3acef16..054037312b8a993e202ea9aa1fe992993f76da65 100755 (executable)
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -74,6 +74,9 @@ of the following environment variables (in any order):
   MACHINE - the machine name (optional, autodetected from KERNEL filename if unspecified)
   Simplified QEMU command-line options can be passed with:
     nographic - disable video console
+    gl - enable virgl-based GL acceleration
+    gl-es - enable virgl-based GL acceleration, using OpenGL ES
+    egl-headless - enable headless EGL output; use vnc or spice to see it
     serial - enable a serial console on /dev/ttyS0
     serialstdio - enable a serial console on the console (regardless of graphics mode)
     slirp - enable user networking, no root privileges is required
@@ -434,6 +437,26 @@ class BaseConfig(object):
             elif arg == 'nographic':
                 self.qemu_opt_script += ' -nographic'
                 self.kernel_cmdline_script += ' console=ttyS0'
+            elif arg == 'gl':
+                self.qemu_opt_script += ' -vga virtio -display gtk,gl=on'
+            elif arg == 'gl-es':
+                self.qemu_opt_script += ' -vga virtio -display gtk,gl=es'
+            elif arg == 'egl-headless':
+                self.qemu_opt_script += ' -vga virtio -display egl-headless'
+                # As runqemu can be run within bitbake (when using testimage, for example),
+                # we need to ensure that we run host pkg-config, and that it does not
+                # get mis-directed to native build paths set by bitbake.
+                try:
+                    del os.environ['PKG_CONFIG_PATH']
+                    del os.environ['PKG_CONFIG_DIR']
+                    del os.environ['PKG_CONFIG_LIBDIR']
+                except KeyError:
+                    pass
+                try:
+                    dripath = subprocess.check_output("PATH=/bin:/usr/bin:$PATH pkg-config --variable=dridriverdir dri", shell=True)
+                except subprocess.CalledProcessError as e:
+                    raise RunQemuError("Could not determine the path to dri drivers on the host via pkg-config.\nPlease install Mesa development files (particularly, dri.pc) on the host machine.")
+                os.environ['LIBGL_DRIVERS_PATH'] = dripath.decode('utf-8').strip()
             elif arg == 'serial':
                 self.kernel_cmdline_script += ' console=ttyS0'
                 self.serialconsole = True