From: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Date: Fri, 2 Jun 2017 15:52:49 +0000 (+0200)
Subject: mesa: only emit _NEW_MULTISAMPLE when min sample shading changes
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=11c6aab239fca9bc4e493107fb3c31016b3a28bd;p=mesa.git

mesa: only emit _NEW_MULTISAMPLE when min sample shading changes

We usually check that given parameters are different before
updating the state.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
---

diff --git a/src/mesa/main/multisample.c b/src/mesa/main/multisample.c
index 16fe2b7ced6..07786130d51 100644
--- a/src/mesa/main/multisample.c
+++ b/src/mesa/main/multisample.c
@@ -140,10 +140,13 @@ _mesa_MinSampleShading(GLclampf value)
       return;
    }
 
-   FLUSH_VERTICES(ctx, 0);
+   value = CLAMP(value, 0.0f, 1.0f);
+
+   if (ctx->Multisample.MinSampleShadingValue == value)
+      return;
 
-   ctx->Multisample.MinSampleShadingValue = CLAMP(value, 0.0f, 1.0f);
-   ctx->NewState |= _NEW_MULTISAMPLE;
+   FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
+   ctx->Multisample.MinSampleShadingValue = value;
 }
 
 /**