Already handled further up in eglapi.c.
To make things a tiny bit strange, X11+DRI3 was doing the wrong thing by
returning EGL_FALSE (+ no error), while X11+DRI2 was returning EGL_TRUE.
Cc: samiuddi <sami.uddin.mohammad@intel.com>
Cc: Eric Engestrom <eric.engestrom@intel.com>
Cc: Erik Faye-Lund <kusmabite@gmail.com>
Cc: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
The API validation in eglapi.c already returns if the surface type is
!window.
Cc: samiuddi <sami.uddin.mohammad@intel.com>
Cc: Erik Faye-Lund <kusmabite@gmail.com>
Cc: Tomasz Figa <tfiga@chromium.org>
Cc: Gurchetan Singh <gurchetansingh@chromium.org>
Cc: Chad Versace <chadversary@chromium.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Already handled further up in eglapi.c
Cc: samiuddi <sami.uddin.mohammad@intel.com>
Cc: Erik Faye-Lund <kusmabite@gmail.com>
Cc: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Already handled further up in eglapi.c
Cc: samiuddi <sami.uddin.mohammad@intel.com>
Cc: Erik Faye-Lund <kusmabite@gmail.com>
Cc: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Unlike the other platforms, here we aim do guess if the device that we
somewhat arbitrarily picked, is supported or not.
In particular: when a vendor is _not_ requested we loop through all
devices, picking the first one which can create a DRI screen.
When a vendor is requested - we use that and do _not_ fall-back to any
other device.
The former seems a bit fiddly, but considering EGL_EXT_explicit_device and
EGL_MESA_query_renderer are MIA, this is the best we can do for the
moment.
With those (proposed) extensions userspace will be able to create a
separate EGL display for each device, query device details and make the
conscious decision which one to use.
v2:
- update droid_open_device_drm_gralloc()
- set the dri2_dpy->fd before using it
- return a EGLBoolean for droid_{probe,open}_device*
- do not warn on droid_load_driver failure (Tomasz)
- plug mem leak on dri2_create_screen failure (Tomasz)
- fixup function name typo (Tomasz, Rob)
v3:
- add forward declaration for droid_load_driver()
Fixes the HAVE_DRM_GRALLOC build (Mauro)
- split dup() assignment and check in separate lines (Tomasz, Eric)
- make droid_load_driver() static (Tomasz)
- drop unused prop_set variable (Tomasz)
v4:
- rebase
- fwd declarationi should be for droid_probe_device()
Cc: Robert Foss <robert.foss@collabora.com>
Cc: Tomasz Figa <tfiga@chromium.org>
Cc: Mauro Rossi <issor.oruam@gmail.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Tested-by: Tomasz Figa <tfiga@chromium.org>
Tested-by: Tapani Pälli <tapani.palli@intel.com>
If color buffer is locked, do not set its wayland buffer to NULL;
otherwise it can not be freed later.
Rather, flag it in order to destroy it later on the release event.
v2: instruct release event to unlock only or free wl_buffer too (Daniel)
This also fixes dEQP-EGL.functional.swap_buffers_with_damage.* tests.
CC: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Daniel Stone <daniels@collabora.com>
We already reject attempts to import images with invalid fourcc formats
but don't really guard the queries all that well. This makes us error
out in any calls to eglQueryDmaBufModifiersEXT if the given format is
not a valid fourcc format. We also add an assert to ensure that drivers
don't advertise any non-fourcc formats.
Cc: mesa-stable@lists.freedesktop.org
Tested-By: Eero Tamminen <eero.t.tamminen@intel.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
This also serves as a convenient "is this a fourcc format" check as well
which we'll take advantage of in the next commit.
Cc: mesa-stable@lists.freedesktop.org
Tested-By: Eero Tamminen <eero.t.tamminen@intel.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Remove the explicit cast, using the appropriate wrapper instead.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Remove the explicit cast, using the appropriate wrapper instead.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Remove the explicit cast, using the appropriate wrapper instead.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Currently droid_probe_device, does not do any 'probing' but filtering
out a device if it doesn't match the vendor string given.
Rename the function, straighten the return type and call it only as
needed - an actual vendor string is provided.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
The function name is misleading - it effectively checks if
loader_get_driver_for_fd fails. Which can happen only only on strdup
error - a close to impossible scenario.
Drop the function - we call the loader API at at later stage.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
The name string is guaranteed to be NULL terminated. Drop the explicit
length check that comes with strncmp().
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Replace the manual handling of /dev/dri in favor of the drmDevice API.
The latter provides a consistent way of enumerating the devices,
providing device details as needed.
v2:
- Use ARRAY_SIZE (Frank)
- s/famour/favor/ typo (Frank)
- Make MAX_DRM_DEVICES a macro - fix vla errors (RobF)
- Remove left-over dev_path instance (RobF)
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Robert Foss <robert.foss@collabora.com> (v1)
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Specifically, implement the extension DRI_MutableRenderBufferLoader.
However, the loader enables EGL_KHR_mutable_render_buffer only if the
DRI driver implements its half of the extension,
DRI_MutableRenderBufferDriver.
Testing:
- No change in dEQP-EGL.functional.* on Fedora 27, Wayland, Skylake
GT2. Used deqp at tag android-p-preview-5.
- No change in dEQP-EGL.functional.*, ran on Android on Chrome OS,
Kabylake GT2.
- Manually inspected Android apps on same Chrome OS device.
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Use a helper to avoid the common issues of upcasting after the right shift
(losing the upper bits) and shifting signed values (sign gets shifted too).
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
This patch fixes a regression in mesa 18.2 and mesa-dev branches
for HAVE_DRM_GRALLOC code path which is causing black screen on Android
and prevents boot due to SIGSEGV MAPERR crash related to unproper handling
of drm_gralloc drm FD in new droid_open_device() path.
Problem is due to c7bb82136b ("egl/android: Add DRM node probing and filtering")
To avoid the crash the former existing working droid_open_device() is restored,
renamed droid_open_device_drm_gralloc() and kept within HAVE_DRM_GRALLOC braces.
Tested with mesa-dev and mesa 18.2 branch and oreo-x86 bootanimation
and Androdi GUI booting is fixed with i965, nouveau, radeon.
The changes are compatible with gbm_gralloc, I've tested build with hwc too.
(v2) remove indentation from HAVE_DRM_GRALLOC pre-processor directive
NOTE: Definition of enum{} for GRALLOC_MODULE_PERFORM_GET_DRM_FD
is not necessary and it's actually causing a redefinition building error,
because in HAVE_DRM_GRALLOC path gralloc_drm.h is already exported
by libgralloc_drm which is currently still a dependency.
Fixes: c7bb82136b ("egl/android: Add DRM node probing and filtering")
Cc: "18.2" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Mauro Rossi <issor.oruam@gmail.com>
This is basically copied from the DRI2 destroy path. Without this,
Raspberry Pi would quickly run out of CMA during the EGL tests in the CTS
due to all the pixmaps laying around.
Fixes: f35198bade ("egl/x11: Implement dri3 support with loader's dri3 helper")
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
According to EGL 1.5 spec, section 3.10.1.1 ("Native Window Resizing"):
"If the native window corresponding to _surface_ has been resized
prior to the swap, _surface_ must be resized to match. _surface_ will
normally be resized by the EGL implementation at the time the native
window is resized. If the implementation cannot do this transparently
to the client, then *eglSwapBuffers* must detect the change and
resize surface prior to copying its pixels to the native window."
So far, resizing a native window in Wayland/EGL was interpreted in Mesa
as a request to resize, which is not executed until the first draw call.
And hence, surface size is not updated until executing it. Thus,
querying the surface size with eglQuerySurface() after a window resize
still returns the old values.
This commit updates the surface size values as soon as the resize is
done, even when the real resize is done in the draw call. This makes the
semantics that any native window resize request take effect inmediately,
and if user calls eglQuerySurface() it will return the new resized
values.
v2: update surface size if there isn't a back surface (Daniel)
CC: Daniel Stone <daniel@fooishbar.org>
CC: mesa-stable@lists.freedesktop.org
Reviewed-by: Daniel Stone <daniels@collabora.com>
When creating a windows surface with eglCreateWindowSurface(), the
width and height returned by eglQuerySurface(EGL_{WIDTH,HEIGHT}) is
invalid until buffers are updated (like calling glClear()).
But according to EGL 1.5 spec, section 3.5.6 ("Surface Attributes"):
"Querying EGL_WIDTH and EGL_HEIGHT returns respectively the width and
height, in pixels, of the surface. For a window or pixmap surface,
these values are initially equal to the width and height of the
native window or pixmap with respect to which the surface was
created"
This fixes dEQP-EGL.functional.color_clears.* CTS tests
v2:
- Do not modify attached_{width,height} (Daniel)
- Do not update size on resizing window (Brendan)
CC: Daniel Stone <daniel@fooishbar.org>
CC: Brendan King <brendan.king@imgtec.com>
CC: mesa-stable@lists.freedesktop.org
Tested-by: Eric Engestrom <eric@engestrom.ch>
Tested-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Daniel Stone <daniels@collabora.com>
This pulls an 'else' block into the function's main body, making the
code easier to follow.
Without this change, the upcoming EGL_KHR_mutable_render_buffer patch
transforms dri2_make_current() into spaghetti.
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
There exist *two* queryable EGL_RENDER_BUFFER states in EGL:
eglQuerySurface(EGL_RENDER_BUFFER) and
eglQueryContext(EGL_RENDER_BUFFER).
These changes eliminate potentially very fragile code in the upcoming
EGL_KHR_mutable_render_buffer implementation.
* eglQuerySurface(EGL_RENDER_BUFFER)
The implementation of eglQuerySurface(EGL_RENDER_BUFFER) contained
abstruse logic which required comprehending the specification
complexities of how the two EGL_RENDER_BUFFER states interact. The
function sometimes returned _EGLContext::WindowRenderBuffer, sometimes
_EGLSurface::RenderBuffer. Why? The function tried to encode the
actual logic from the EGL spec. When did the function return which
variable? Go study the EGL spec, hope you understand it, then hope
Mesa mutated the EGL_RENDER_BUFFER state in all the correct places.
Have fun.
To simplify eglQuerySurface(EGL_RENDER_BUFFER), and to improve
confidence in its correctness, flatten its indirect logic. For pixmap
and pbuffer surfaces, simply return a hard-coded literal value, as the
spec suggests. For window surfaces, simply return
_EGLSurface::RequestedRenderBuffer. Nothing difficult here.
* eglQueryContext(EGL_RENDER_BUFFER)
The implementation of this suffered from the same issues as
eglQuerySurface, and the solution is the same. confidence in its
correctness, flatten its indirect logic. For pixmap and pbuffer
surfaces, simply return a hard-coded literal value, as the spec
suggests. For window surfaces, simply return
_EGLSurface::ActiveRenderBuffer.
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
As the spec says:
EGL_BAD_NATIVE_PIXMAP is generated if the implementation
does not support native pixmaps.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Currently dri2_copy_buffers is used for swrast, which depends on the
DRI2_FLUSH extension. Since that's not a thing on software based
drivers we crash out.
Do the slightly more graceful, thing of returning EGL_FALSE.
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
We need to distinguish if the backing storage of a pixmap
is XRGB2101010 or XBGR2101010, as different gpu hw supports
different formats. NVidia hw prefers XBGR, whereas AMD and
Intel are happy with XRGB.
Use the red channel mask of the first depth 30 visual of
the x-screen to distinguish which hw format to choose.
This fixes desktop composition of color depth 30 windows
when the X11 compositor uses EGL.
v2: Switch from using the visual of the root window to simply
using the first depth 30 visual for the x-screen, as testing
shows that each driver only exports either xrgb ordering or
xbgr ordering for the channel masks of its depth 30 visuals,
so this should be unambiguous and avoid trouble if X ever
supports depth 30 pixmaps on screens with a non-depth 30 root
window visual. This per Michels suggestion.
v3: No change to v2, but spent some time testing this more on
AMD hw, with my software hacked up to intentionally choose
pixel formats/visual with the non-preferred xBGR2101010
ordering on the ati-ddx, also with a standard non-OpenGL
X-Window with depth 30 visual, to make sure that things show
up properly with the right colors on the screen when going
through EGL+OpenGL based compositing on KDE-5. Iow. to confirm
that my explanation to the v2 patch on the mailing list of why
it should work and the actual practice agree (or possibly that
i am good at fooling myself during testing ;).
v4: Drop the local `red_mask` and just `return visual->red_mask`/
`return 0`, as suggested by Eric Engestrom.
Rebased onto current master, to take the cleanup via the new
function dri2_format_for_depth() into account.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Add support for XBGR2101010 and ABGR2101010.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Tested-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Tested-by: Ilia Mirkin <imirkin@alum.mit.edu>
Allow platform_surfaceless to use swrast even if DRM is not available.
To be used to allow a fuzzer for virgl to be run on a jailed VM without
hardware GL or DRM support.
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Signed-off-by: David Riley <davidriley@chromium.org>
Signed-off-by: David Riley <davidriley@chromium.org>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
[chadv: Dropped spurious hunk]
Reviewed-by: Chad Versace <chadversary@chromium.org>
The EGL CTS expects that you can make images from all sorts of things,
including things like z16 and s8, which we don't have DRM fourccs for.
Just return an error when trying to export one of those.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
We should only use a #define locally once it's been upstreamed, and at
that point you should just update our drm_fourcc.h.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This patch both adds support for probing & filtering DRM nodes
and switches away from using the GRALLOC_MODULE_PERFORM_GET_DRM_FD
gralloc call.
Currently the filtering is based just on the driver name,
and the desired name is supplied using the "drm.gpu.vendor_name"
Android property.
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Maintaining both flink names and prime fd support which are provided by
2 different gralloc implementations is problematic because we have a
dependency on a specific gralloc implementation header.
This mostly disables the dependency on the gralloc implementation and
headers. The dependency on GRALLOC_MODULE_PERFORM_GET_DRM_FD remains for
now, but the definition is added locally to remove the header
dependency.
drm_gralloc support can be enabled by setting
BOARD_USES_DRM_GRALLOC=true in BoardConfig.mk.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Daniel Stone <daniels@collabora.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Suggested-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Just like is done for other backends when suitable config is not
found (added in fd4eba4929).
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Juan A. Suarez <jasuarez@igalia.com>
Similar to swap_available path send invalidate to the driver because
egl/X11 is not watching for for server's invalidate events. The
dri2_copy_region path is trigerred when server supports DRI2 version
minor 1.
Tested with piglit egl tests for regression.
V2: Move invalidate from dri2_copy_region to swap_buffer common.
Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Deepak Rawat <drawat@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Acked-by: Michel Dänzer <michel.daenzer@amd.com>
According to EGL 1.4 spec, section 3.5.1 ("Creating On-Screen Rendering
Surfaces"), if config does not support the colorspace or alpha format
attributes specified in attrib_list (as defined for
eglCreateWindowSurface), an EGL_BAD_MATCH error is generated.
This fixes dEQP-EGL.functional.wide_color.*_888_colorspace_srgb (still
not merged,
https://android-review.googlesource.com/c/platform/external/deqp/+/667322),
which is crashing when trying to create a windows surface with RGB888
configuration and sRGB colorspace.
v2: Handle the fix in other backends (Tapani)
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
The version passed to QueryVersion requests is the version that the
client supports. We were just passing in whatever version of XCB was
present on the system, which may not be a version that Mesa actually
explicitly supports, e.g. it might bring unwanted semantics.
Set specific protocol versions which we support, and only pass those.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Fixes: 7aeef2d4ef ("dri3: allow building against older xcb (v3)")
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
commit 03dd9a88b0 introduced per surface
queues, but the display_sync for swrast_commit_backbuffer remained on
the old queue. This is likely to break when dispatching the correct
queue at the top of function (which can't dispatch the sync callback
we're waiting for).
The easiest known reproduction case is running weston-subsurfaces under
weston --use-pixman
Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
The previous commit to make DRI3 modifier support optional, breaks with
an updated server and old client.
Make sure we never set multibuffers_available unless we also support it
locally. Make sure we don't call stubs of new-DRI3 functions (or empty
branches) which will never succeed.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Fixes: 7aeef2d4ef ("dri3: allow building against older xcb (v3)")
I'm not sure everyone wants to be updating their dri3 in a forced
march setting, this allows a nicer approach, esp when you want
to build on distro that aren't brand new.
I'm sure there are plenty of ways this patch could be cleaner,
and I've also not built it against an updated dri3.
For meson I've just left it alone, since if you are using meson
you probably don't mind xcb updates, and if you are using meson
you can fix this better than me.
v3: just don't put a version in for dri3/present without
modifiers, should allow building with 1.11 as well
(feel free to supply meson followups)
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Implement the eglSwapinterval for Android platform to
enable the async mode for some GFX benchmarks such as
Daimler C217, CityBench.
Results of the dEQP-EGL.*swap_interval tests
'dEQP-EGL.functional.query_config.get_config_attrib.max_swap_interval'..
'dEQP-EGL.functional.query_config.get_config_attrib.min_swap_interval'..
'dEQP-EGL.functional.choose_config.simple.selection_only.max_swap_interval'..
'dEQP-EGL.functional.choose_config.simple.selection_only.min_swap_interval'..
'dEQP-EGL.functional.choose_config.simple.selection_and_sort.max_swap_interval'..
'dEQP-EGL.functional.choose_config.simple.selection_and_sort.min_swap_interval'..
'dEQP-EGL.functional.negative_api.swap_interval'..
Test run totals:
Passed: 7/7 (100.0%)
Failed: 0/7 (0.0%)
Not supported: 0/7 (0.0%)
Warnings: 0/7 (0.0%)
Signed-off-by: Zhongmin Wu <zhongmin.wu@intel.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
[Emil Velikov: polish inline comment, add dEQP stats, s/dpy/disp/]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Instead of indirectly pulling the wayland headers everywhere, use
forward declarations and #include only as needed.
Should effectively fix build errors like the following:
make[5]: Entering directory
'/.../src/gallium/state_trackers/omx/tizonia'
CC h264dprc.lo
In file included from h264dprc.c:45:0:
.../src/egl/drivers/dri2/egl_dri2.h:47:10: fatal error:
wayland/wayland-egl/wayland-egl-backend.h: No such file or directory
#include "wayland/wayland-egl/wayland-egl-backend.h"
Cc: Dylan Baker <dylan@pnwbakers.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Eric Engestrom <eric.engestrom@imgtec.com>
Tested-by: Andy Furniss <adf.lists@gmail.com>
Emil Velikov
Kristian H. Kristensen
Mauro Rossi
Juan A. Suarez Romero
Jason Ekstrand
Chad Versace
Eric Engestrom
Eric Anholt
Mario Kleiner
Daniel Stone
David Riley
Robert Foss
Rob Herring
Tapani Pälli
Deepak Rawat
Derek Foreman
Dave Airlie
Wu, Zhongmin