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Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.
Task-number: QTBUG-67283
Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
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Experiment with this once again, this time in a more forward looking
manner: move the code previously placed into eglfs's eglfs_viv backend
into its own plugin.
Move our attention to devices like the Raspberry Pi 4, where
VK_KHR_display has recently been introduced to the Mesa v3dv
backend. This is not in Mesa 20.3.3, the latest release at the time of
writing, but is available and functional when building master. This
serves as the reference system for testing the plugin, because it
looks like a fairly robust implementation.
The sole thing the plugin enables at the moment is creating a
QVulkanInstance and a QWindow with surfaceType VulkanSurface. This is
sufficient to run plain QWindow+QRhi (with QRhi::Vulkan), Qt Quick,
and Qt Quick 3D (with QSG_RHI_BACKEND=vulkan) applications.
One display and mode is chosen, by default the first in the
enumeration lists reported by the Vulkan extension. This can be
overridden with QT_VK_DISPLAY_INDEX and QT_VK_MODE_INDEX (modeled
after QT_VK_PHYSICAL_DEVICE_INDEX). The indices can be determined
based on the logs printed to the debug output. Changing the mode seems
to be working nicely with v3dv.
Multiple screen setups, where there would be more than one
VkDisplayKHR enumerated, have not been tested yet. Regardless,
multiple screens (reporting more than one QScreen, with a different
QWindow on each, eglfs style) are not currently supported. This may be
improved later (while keeping in mind that VK_KHR_display does not
have a fully-featured output management API).
Multiple (non-fullscreen) windows and especially raster windows
(QWidget) are not and will not be supported. Our single QWindow is
always forced to fullscreen.
When it comes to input, the level of support should match linuxfb and
eglfs. Note that while mouse input is fully functional, there is no
mouse cursor. (and this is unlikely to be implemented)
[ChangeLog][Platform Specific Changes][Embedded Linux] Introduced a
vkkhrdisplay platform plugin to run Vulkan-based applications in
fullscreen, without a windowing system, on systems where
VK_KHR_display and VK_KHR_display_swapchain are supported by the
Vulkan implementation.
Change-Id: I6388416f7fb2bfdc4b412a0a4971f25cc05d4668
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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The eglfs_viv backend has Vulkan support now. While the support code is
common (lives in api/vulkan), we will not expose this for any other integration
yet, without the appropriate testing.
While putting this to eglfs seems unintuitive at first, it turns out that
for Vivante in particular this is very useful, since we can rely on the existing
framebuffer device infrastructure to solve certain problems (like the lack of
vsync)
The VK_KHR_display implementation of Vivante currently exhibits all the known issues
of the old, fbdev-style EGL plumbing (presumably since it lives on top of that):
- No vsync. This can be fixed by setting QT_QPA_EGLFS_FORCEVSYNC.
- May need a manual call to fbset to set the correct resolution before
launching the Qt app.
- And of course it lacks all the multi-screen features provided by drm.
- Plus, it seems the swapchain only supports a min/max buffer count of 1. This
needs special handling in QRhi since until now we assumed that there was always
at least 2 buffers available.
[ChangeLog][Platform Specific Changes][Linux] Vulkan is now supported by eglfs
(eglfs_viv backend) on i.MX8 devices with the Vivante graphics stack. This is done
via VK_KHR_display so no windowing system is required.
Task-number: QTBUG-78754
Change-Id: I7530aa026d4b904b9de83f9bdbdc4897ae770e71
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
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We can use 'override' directly since Qt 5.7.
Also remove redundant 'virtual'.
Change-Id: I4c1d5d8a69bf51a7f31077f7cdc74ba06da0bc11
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
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This allows external integrations to be developed against it.
Also uniforms all class names as QEglFSFoo.
Change-Id: I72ff37c0fcdf1ccd37110b4c36874d6c99b2e743
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
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From Qt 5.7 -> LGPL v2.1 isn't an option anymore, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new LGPL header instead of LGPL21 one
(in those files which will be under LGPL v3)
Change-Id: I046ec3e47b1876cd7b4b0353a576b352e3a946d9
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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eglfs does not depend on the device makespecs anymore when it comes to these device
integration backends (hooks). Instead, backends are autodetected by configure.
The name of the preferred plugin is still set in the device makespecs. This
is optional. When not set and there is more than one plugin present in the system,
the environment variable QT_QPA_EGLFS_INTEGRATION will have to be set at runtime.
In the absence of that, the order is undefined.
Change-Id: Ie1ced2c9aa1beff2adb13b4fdea7c499cb5a6aab
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>
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