Mesa (master): i965: Disable MCS on Broadwell for now.
Kenneth Graunke
kwg at kemper.freedesktop.org
Wed Feb 19 23:41:06 UTC 2014
Module: Mesa
Branch: master
Commit: 80c4edfc27a4ee77d8fea4dd558a18f69df0579a
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=80c4edfc27a4ee77d8fea4dd558a18f69df0579a
Author: Kenneth Graunke <kenneth at whitecape.org>
Date: Mon Feb 10 12:02:14 2014 -0800
i965: Disable MCS on Broadwell for now.
v2: Add a perf_debug() message to remind us to come back to this.
Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Eric Anholt <eric at anholt.net>
Reviewed-by: Anuj Phogat <anuj.phogat at gmail.com>
---
src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 8e0d2be..ba59ecd 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -84,6 +84,14 @@ compute_msaa_layout(struct brw_context *brw, mesa_format format, GLenum target)
case GL_DEPTH_STENCIL:
return INTEL_MSAA_LAYOUT_IMS;
default:
+ /* Disable MCS on Broadwell for now. We can enable it once things
+ * are working without it.
+ */
+ if (brw->gen >= 8) {
+ perf_debug("Missing CMS support on Broadwell.\n");
+ return INTEL_MSAA_LAYOUT_UMS;
+ }
+
/* From the Ivy Bridge PRM, Vol4 Part1 p77 ("MCS Enable"):
*
* This field must be set to 0 for all SINT MSRTs when all RT channels
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