From b7cfd8c7f09a1a913c5678a5a25a951307593eb3 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Mon, 21 May 2012 23:33:25 -0500
Subject: MAINT-616 Factor out calls to glGenFoo where possible, add setting to
 control synchronizing strategy WRT occlusion queries, add experimental
 transform feedback driven LoD update

---
 indra/llrender/llgl.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'indra/llrender/llgl.h')

diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 9c3a47bd50..c26b75eff7 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -104,6 +104,7 @@ public:
 	BOOL mHasDepthClamp;
 	BOOL mHasTextureRectangle;
 	BOOL mHasTextureMultisample;
+	BOOL mHasTransformFeedback;
 	S32 mMaxSampleMaskWords;
 	S32 mMaxColorTextureSamples;
 	S32 mMaxDepthTextureSamples;
@@ -418,6 +419,31 @@ public:
 	virtual void updateGL() = 0;
 };
 
+const U32 FENCE_WAIT_TIME_NANOSECONDS = 10000;  //1 ms
+
+class LLGLFence
+{
+public:
+	virtual void placeFence() = 0;
+	virtual bool isCompleted() = 0;
+	virtual void wait() = 0;
+};
+
+class LLGLSyncFence : public LLGLFence
+{
+public:
+#ifdef GL_ARB_sync
+	GLsync mSync;
+#endif
+	
+	LLGLSyncFence();
+	virtual ~LLGLSyncFence();
+
+	void placeFence();
+	bool isCompleted();
+	void wait();
+};
+
 extern LLMatrix4 gGLObliqueProjectionInverse;
 
 #include "llglstates.h"
-- 
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