i965/msaa: Add an enum to describe MSAA layout.

From the Ivy Bridge PRM, Vol 1 Part 1, p112:

    There are three types of multisampled surface layouts designated
    as follows:
      - IMS Interleaved Multisampled Surface
      - CMS Compressed Mulitsampled Surface
      - UMS Uncompressed Multisampled Surface

Previously, the i965 driver only used IMS and UMS formats, and
distinguished beetween them using the boolean
intel_mipmap_tree::msaa_is_interleaved.  To facilitate adding support
for the CMS format, this patch replaces that boolean (and other
booleans derived from it) with an enum
INTEL_MSAA_LAYOUT_{IMS,CMS,UMS}.  It also updates the terminology used
in comments throughout the driver to match the IMS/CMS/UMS terminology
used in the PRM.  CMS layout is not yet used.

The enum has a fourth possible value, INTEL_MSAA_LAYOUT_NONE, which is
used for non-multisampled surfaces.

Reviewed-by: Chad Versace <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
index 04ae6b23289..ddf38e3dd35 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
@@ -1022,7 +1022,7 @@ brw_update_renderbuffer_surface(struct brw_context *brw,
 				       width, height, depth,
 				       true,
                                        0 /* num_samples */,
-                                       false /* msaa_is_interleaved */);
+                                       INTEL_MSAA_LAYOUT_NONE);
 
 	 intel_miptree_copy_teximage(intel, intel_image, new_mt);
 	 intel_miptree_reference(&irb->mt, intel_image->mt);