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This implements the necessary bits to provide 2D framebuffer support on top of VirtIO GPU device as implemented in Qemu. I don't know if any other implementation of this specific device exists. Compared to the ramfb driver which already exists in Genode Virtio FB driver has one major benefit. It allows Qemu window to be dynamically resized at runtime. The driver will treat this as resolution change and act accordingly. Ramfb driver can currently only use the hardcoded 1024x768 screen size. Changing screen resolution might not sound like a big deal, but it is rather useful to run Genode on Qemu in full screen mode. |
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