[Mesa-dev] [PATCH 2/4] mesa: drop APPLE_vertex_array_object support

[Kenneth Graunke]

On Monday, May 15, 2017 4:06:31 PM PDT Timothy Arceri wrote:
> On 16/05/17 08:13, Ian Romanick wrote:
> > On 04/23/2017 10:28 PM, Timothy Arceri wrote:
> > 
> >> diff --git a/src/mapi/glapi/gen/APPLE_vertex_array_object.xml b/src/mapi/glapi/gen/APPLE_vertex_array_object.xml
> >> deleted file mode 100644
> >> index 7312f9b..0000000
> >> --- a/src/mapi/glapi/gen/APPLE_vertex_array_object.xml
> >> +++ /dev/null
> >> @@ -1,27 +0,0 @@
> > 
> > 
> > So... I'm fairly sure this is going to break loading a _dri.so built
> > without this patch by a libGL built with this patch.
> 
> I recall something like this coming up a few year ago, can you remind me 
> again why this is a problem? Shouldn't these be updated in sync?

Out-of-tree drivers, such as the legacy DRI1 drivers, won't be updated
in sync (or likely ever).  I believe there are also at least two closed
source drivers (though that isn't a good reason not to do this change).

Ian might recall some other reasons.

Leaving the functions there, but having them return INVALID_OPERATION
(like generic_nop does) would likely route around this issue.

Not sure whether deleting support for this extension is a good idea
or not.  I can't think of any applications that use it offhand, but
I haven't really looked into it either...if the NVIDIA blob doesn't
expose it, that's a good data point...

--Ken
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