NORSPEC-59 work around nV driver crash when doing deferred rendering on NV 9400M/9600M

1 files changed, 9 insertions, 5 deletions

diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index 286152867f..ce066d85f1 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -783,9 +783,6 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 	// Load basic dependency shaders first
 	// All of these have to load for any shaders to function
 	
-#if LL_DARWIN // Mac can't currently handle all 8 lights, 
-	S32 sum_lights_class = 2;
-#else 
 	S32 sum_lights_class = 3;
 
 	// class one cards will get the lower sum lights
@@ -796,14 +793,21 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 	{
 		sum_lights_class = 2;
 	}
-#endif
 
 	// If we have sun and moon only checked, then only sum those lights.
 	if (gPipeline.getLightingDetail() == 0)
 	{
 		sum_lights_class = 1;
 	}
-
+	
+#if LL_DARWIN
+	// Work around driver crashes on older Macs when using deferred rendering
+	// NORSPEC-59
+	//
+	if (gGLManager.mIsMobileGF)
+		sum_lights_class = 3;
+#endif
+	
 	// Use the feature table to mask out the max light level to use.  Also make sure it's at least 1.
 	S32 max_light_class = gSavedSettings.getS32("RenderShaderLightingMaxLevel");
 	sum_lights_class = llclamp(sum_lights_class, 1, max_light_class);