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hw/display/vmware_vga: do not discard screen updates

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In certain circumstances, typically when there is lots changing on the
screen, updates will be discarded resulting in garbled output.

This change simplifies the traversal of the display update FIFO queue
when applying updates. We just track the queue length and iterate up to
the end of the queue.

Additionally when adding updates to the queue, if the buffer reaches
capacity we force a flush before accepting further events.

Signed-off-by: Carwyn Ellis <carwynellis@gmail.com>
Message-Id: <20220206183956.10694-3-carwynellis@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Carwyn Ellis 2022-02-06 18:39:56 +00:00 • committed by Gerd Hoffmann
parent a74782936d
commit 67ae042737
2 changed files with 24 additions and 18 deletions
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1
hw/display/trace-events
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@ -24,6 +24,7 @@ vmware_setmode(uint32_t w, uint32_t h, uint32_t bpp) "%dx%d @ %d bpp"
vmware_verify_rect_less_than_zero(const char *name, const char *param, int x) "%s: %s was < 0 (%d)"
vmware_verify_rect_greater_than_bound(const char *name, const char *param, int bound, int x) "%s: %s was > %d (%d)"
vmware_verify_rect_surface_bound_exceeded(const char *name, const char *component, int bound, const char *param1, int value1, const char *param2, int value2) "%s: %s > %d (%s: %d, %s: %d)"
vmware_update_rect_delayed_flush(void) "display update FIFO full - forcing flush"
# virtio-gpu-base.c
virtio_gpu_features(bool virgl) "virgl %d"