[Intel-gfx] [PATCH 2/2] dri: Add support for DRI2BufferStencil and DRI2BufferHiz

[Eric Anholt]

On Sat,  4 Jun 2011 17:06:31 -0700, Chad Versace <chad at chad-versace.us> wrote:
> Before this commit, if a client were to request a stencil or hiz buffer, then
> I830DRI2CreateBuffer() allocated and returned an X-tiled buffer by
> accident. (DRI2BufferStencil and DRI2BufferHiz were unintentionally caught
> by the default case of a switch statement.)
> 
> Now, I830DRI2CreateBuffer() correctly returns a Y-tiled buffer and handles
> the stencil buffer as a special case due its quirky pitch requirements.
> 
> This shouldn't break older Mesa versions, because they never query (via
> DRI2GetBuffersWithFormat) for the drawable's DRI2BufferStencil.
> 
> Signed-off-by: Chad Versace <chad at chad-versace.us>

This should make configure.ac depend on the bumped version of
dri2proto.h, so people get an explanation instead of just build failure.

Also, I'm surprised to see you didn't fix the "we'll allocate a buffer
for *anything*" behavior that made the compat path in Mesa strange this
time around.
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