From bf6bd7eaf09fadc516a1e46635ed8590f4d88535 Mon Sep 17 00:00:00 2001 From: Neil Roberts Date: Wed, 9 Sep 2015 14:38:08 +0100 Subject: [PATCH] i965: Support allocating the MCS buffer for 16x MSAA When 16 samples are used the MCS buffer needs 64 bits per pixel. Reviewed-by: Ben Widawsky --- 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 0802b92502c..b1a7632d82f 100644 --- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c +++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c @@ -1427,6 +1427,12 @@ 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"); }; -- 2.30.2