Piotr Kubaj
a4939c554a
The virtio-gpu resource formats are defined by byte order in memory, while vt(4) and the X server (through vt_fb and the fb mmap) write native 32-bit 0x00RRGGBB pixels into the shadow framebuffer. On a big-endian guest such as powerpc64 those pixels land in memory as 00 RR GG BB, which the host interprets under B8G8R8X8 with red and blue swapped and the padding byte taken as blue: white renders yellow and blue renders black. Request X8R8G8B8 on big-endian guests instead, which is also what the Linux driver does (DRM_FORMAT_HOST_XRGB8888). Reproduced with a colour test pattern on a powerpc64 QEMU pseries guest using the identically coded out-of-tree fork of this driver (graphics/virtio-gpu-qemu-kmod); little-endian guests are unchanged. Differential Revision: https://reviews.freebsd.org/D60085 Approved by: jhibbits MFC after: 1 week (cherry picked from commit7cf02164a5) (cherry picked from commitceaf30c92e)
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| Directory | Description |
|---|---|
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| cddl | Various commands and libraries under the Common Development and Distribution License. |
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