From 24586f810eb7ef8048a55687333d51c53aa2bed8 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Wed, 5 Jun 2024 15:14:13 -0500
Subject: #1527 Improve performance on Apple silicon (#1632)

---
 indra/llrender/llrender.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'indra/llrender/llrender.cpp')

diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 399281be84..51028e5667 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -990,6 +990,7 @@ void LLRender::syncLightState()
 
 void LLRender::syncMatrices()
 {
+    STOP_GLERROR;
     static const U32 name[] =
     {
         LLShaderMgr::MODELVIEW_MATRIX,
@@ -1012,8 +1013,6 @@ void LLRender::syncMatrices()
 
     if (shader)
     {
-        //llassert(shader);
-
         bool mvp_done = false;
 
         U32 i = MM_MODELVIEW;
@@ -1134,6 +1133,7 @@ void LLRender::syncMatrices()
             syncLightState();
         }
     }
+    STOP_GLERROR;
 }
 
 void LLRender::translatef(const GLfloat& x, const GLfloat& y, const GLfloat& z)
@@ -1585,6 +1585,7 @@ void LLRender::end()
 }
 void LLRender::flush()
 {
+    STOP_GLERROR;
     if (mCount > 0)
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_PIPELINE;
@@ -1693,6 +1694,9 @@ void LLRender::flush()
                     vb->setColorData(mColorsp.get());
                 }
 
+#if LL_DARWIN
+                vb->unmapBuffer();
+#endif
                 vb->unbind();
 
                 sVBCache[vhash] = { vb , std::chrono::steady_clock::now() };
-- 
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