[Xcb] To do

[Josh Triplett]

Josh Triplett wrote:
> For the GLX_RENDER_COMMAND structure, you want:
>
> <struct name="GLX_RENDER_COMMAND">
>   <field type="CARD16" name="length" />
>   <field type="CARD16" name="opcode" />
>   <list  type="BYTE"   name="data">
>     <op op="-">
>       <fieldref>length</fieldref>
>       <value>4</value>
>     </op>
>   </list>
> </struct>

This is the correct solution.

> You could alternatively express the list as CARD16s (which the spec
> seems to), and use (length-4)/2 as the length expression.

Ignore this; misread the spec.

- Josh Triplett
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