first pass ui rendering performance improvements

1 files changed, 21 insertions, 5 deletions

diff --git a/indra/llui/lllocalcliprect.h b/indra/llui/lllocalcliprect.h
index cd0c55ca72..36413f1496 100644
--- a/indra/llui/lllocalcliprect.h
+++ b/indra/llui/lllocalcliprect.h
@@ -31,7 +31,9 @@
 #ifndef LLLOCALCLIPRECT_H
 #define LLLOCALCLIPRECT_H
 
+#include "llgl.h"
 #include "llrect.h"		// can't forward declare, it's templated
+#include <stack>
 
 // Clip rendering to a specific rectangle using GL scissor
 // Just create one of these on the stack:
@@ -39,15 +41,29 @@
 //     LLLocalClipRect(rect);
 //     draw();
 // }
-class LLLocalClipRect
+class LLScreenClipRect
 {
 public:
-	LLLocalClipRect(const LLRect& rect, BOOL enabled = TRUE);
-	~LLLocalClipRect();
+	LLScreenClipRect(const LLRect& rect, BOOL enabled = TRUE);
+	virtual ~LLScreenClipRect();
+
+private:
+	static void pushClipRect(const LLRect& rect);
+	static void popClipRect();
+	static void updateScissorRegion();
 
 private:
-	// implementation class
-	class LLScreenClipRect* mScreenClipRect;
+	LLGLState		mScissorState;
+	BOOL			mEnabled;
+
+	static std::stack<LLRect> sClipRectStack;
+};
+
+class LLLocalClipRect : public LLScreenClipRect
+{
+public:
+	LLLocalClipRect(const LLRect& rect, BOOL enabled = TRUE);
+	~LLLocalClipRect();
 };
 
 #endif