[Spice-devel] Spice Display Channel Capabilities

[Frediano Ziglio]

> Dear developers.

> I have been reproducing spice protocol, (Not using spice-gtk actually). So
> far I have seen some image types and most of the stream types but I was not
> able to use some capabilities.
> First, how to enable Glyph string,
> Second, I only get one rendering message (draw_copy). I want to use full
> capability of Display Channel since it is the bottle neck.

The messages you receive depends on the guest stack. That is the OS version
and driver type/version. Also you have to use QXL as card type.
Can you provide more details on Guest OS version and drivers installed?

> Las, for image type, how to enable JPEG, JPEG_Alpha, LZ_PLT. (The image type
> request message is a subset of all image types)

All these are enabled without capabilities, that is they are assumed to
be supported by the server/client. The selection is done by spice-server
combining settings (like from Qemu) and bandwidth detection (for JPEG).

> Sorry for the long email.

NP

> Best wishes,
> Saleh Daghigh

Frediano