gallium: Obtain ARB_framebuffer_no_attachment constants

Set default values for the constants required in
ARB_framebuffer_no_attachments and obtained the number
of layers from ``PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS``.

We also obtain the MaxFramebufferSamples value using
a query back to the driver for PIPE_FORMAT_NONE.

V.1:
 Merge if branch predicates into one branch.
 Move const init into st_init_limits()

[airlied: whitespace fixup]
Signed-off-by: Edward O'Callaghan <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

0 files changed, 0 insertions, 0 deletions