From eb809e373d2f12fd1a282401eb2ac4fbaf209f85 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Wed, 5 Oct 2011 01:03:42 -0500
Subject: [PATCH] SH-2481 Potential fix for viewer detecting incorrect amount
of vram available when using certain video cards.
---
indra/llrender/llgl.cpp | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index 8ad75384f22..c0d15fe6f36 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -630,6 +630,8 @@ bool LLGLManager::initGL()
initExtensions();
stop_glerror();
+ S32 old_vram = mVRAM;
+
if (mHasATIMemInfo)
{ //ask the gl how much vram is free at startup and attempt to use no more than half of that
S32 meminfo[4];
@@ -644,6 +646,11 @@ bool LLGLManager::initGL()
mVRAM = dedicated_memory/1024;
}
+ if (mVRAM < 256)
+ { //something likely went wrong using the above extensions, fall back to old method
+ mVRAM = old_vram;
+ }
+
stop_glerror();
stop_glerror();
--
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