From: Paul Berry Date: Thu, 26 Jul 2012 21:13:35 +0000 (-0700) Subject: i965/msaa: Use MESA_FORMAT_R8 for MCS buffer. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ee9f6a34ccf7f51111b21bba8d8f9d03cc0a2c74;p=mesa.git i965/msaa: Use MESA_FORMAT_R8 for MCS buffer. No functional change. This patch modifies intel_miptree_alloc_mcs to allocate the 4x MCS buffer using MESA_FORMAT_R8 instead of MESA_FORMAT_A8. In principle it doesn't matter, since we only access the buffer using MCS-specific hardware mechanisms, so all that's important is to use a format with the correct size. However, MESA_FORMAT_A8 has enough unusual behaviours that it seems prudent to avoid it. Acked-by: Kenneth Graunke --- diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c index 3d15a8d976e..53bc23f2d08 100644 --- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c +++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c @@ -684,7 +684,7 @@ intel_miptree_alloc_mcs(struct intel_context *intel, /* 8 bits/pixel are required for MCS data when using 4x MSAA (2 bits for * each sample). */ - format = MESA_FORMAT_A8; + format = MESA_FORMAT_R8; break; case 8: /* 32 bits/pixel are required for MCS data when using 8x MSAA (3 bits