When 16 samples are used the MCS buffer needs 64 bits per pixel.
---
src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 0cb0632..9faafb4 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -1374,6 +1374,12 @@ intel_miptree_alloc_mcs(struct brw_context *brw,
*/
format = MESA_FORMAT_R_UINT32;
break;
+ case 16:
+ /* 64 bits/pixel are required for MCS data when using 16x MSAA (4 bits
+ * for each sample).
+ */
+ format = MESA_FORMAT_RG_UINT32;
+ break;
default:
unreachable("Unrecognized sample count in intel_miptree_alloc_mcs");
};
--
1.9.3
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