| Commit message (Collapse) | Author | Age | Files | Lines |
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There is no need to apply QMAKE_LFLAGS_NOUNDEF in a .pro file that loads
qt_module.prf or qt_plugin.prf, both of which do the same.
Change-Id: I1ec86cddb4d0991becc136f8bd50d6652c885a6b
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
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Clear all queued buffers, and reinitialize the Qt layer so we can try again
next time.
Change-Id: I921f6f457666206be92aadf2fe40b855e6ebff62
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
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Blending can fail if one of the input buffers is destroyed in the middle of the
streaming operation. In that case, turn streaming off so blending can be
attempted again after disabling the input.
Change-Id: Id5c82b22a2ed0858ab20902395830efa0e64177d
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
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Exposed through QEglFSFunctions::vsp2SetLayerAlpha.
Change-Id: I2a600971d5a2aa56d4bf7cde03df3323f17249cd
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
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This creates a new device integration for eglfs, eglfs_kms_vsp2, that's very
similar to eglfs_kms_gbm, but includes an extra step for doing VSP2 hardware
compositing.
The main Qt content is drawn to double buffered off-screen GBM buffers which
are converted using drmPrimeHandleToFD so we get DMA buffer file descriptors
that can be used by the VSP2 blending hardware. The blending hardware writes to
double buffered DRM dumb buffers, which are flipped with drmModePageFlip.
Communicating with the VSP2 is done using the Video4Linux2 (V4L2) streaming
API. There are two steps in creating abstractions for this. First, there is the
QLinuxMedia class that consists of a Qt style wrapper for V4L2 without anything
VSP2 specific. Second, there is QVsp2BlendingDevice which hides some of the
streaming details of the VSP2 and has some level of error recovery. Both
classes include a fair bit of logging and error reporting.
The patch is written with Wayland compositors in mind, but should work for
other use cases as well.
This is just the basic support to make compositing work, additional features
may be added in subsequent patches, i.e:
- Auto-detect VSP2 (-feature-vsp2 currently needs to be explicitly enabled).
- Support for setting the alpha value of a layer.
- Support clipping layers.
- Support for scaling layers.
- Support for other output formats than RGBA32.
- Hardware cursor support.
- Support foreign layers below the main Qt layer.
- Support for memory mapped and user pointer buffer types (currently only DMA
buffers are supported).
Change-Id: I1917d2dbdbaeded0d9c021baaa799d56afe1a9bd
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
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