SH-1320 Fix for flickering objects in water distortion/reflection maps.

2 files changed, 18 insertions, 8 deletions

diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index d5f0b81830..b508705759 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -1858,12 +1858,17 @@ void parse_gl_version( S32* major, S32* minor, S32* release, std::string* vendor
 	}
 }
 
-LLGLUserClipPlane::LLGLUserClipPlane(const LLPlane& p, const glh::matrix4f& modelview, const glh::matrix4f& projection)
+LLGLUserClipPlane::LLGLUserClipPlane(const LLPlane& p, const glh::matrix4f& modelview, const glh::matrix4f& projection, bool apply)
 {
-	mModelview = modelview;
-	mProjection = projection;
+	mApply = apply;
 
-	setPlane(p[0], p[1], p[2], p[3]);
+	if (mApply)
+	{
+		mModelview = modelview;
+		mProjection = projection;
+
+		setPlane(p[0], p[1], p[2], p[3]);
+	}
 }
 
 void LLGLUserClipPlane::setPlane(F32 a, F32 b, F32 c, F32 d)
@@ -1894,9 +1899,12 @@ void LLGLUserClipPlane::setPlane(F32 a, F32 b, F32 c, F32 d)
 
 LLGLUserClipPlane::~LLGLUserClipPlane()
 {
-	glMatrixMode(GL_PROJECTION);
-	glPopMatrix();
-	glMatrixMode(GL_MODELVIEW);
+	if (mApply)
+	{
+		glMatrixMode(GL_PROJECTION);
+		glPopMatrix();
+		glMatrixMode(GL_MODELVIEW);
+	}
 }
 
 LLGLNamePool::LLGLNamePool()
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 0d7ba15b12..43992d51cb 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -301,12 +301,14 @@ class LLGLUserClipPlane
 {
 public:
 	
-	LLGLUserClipPlane(const LLPlane& plane, const glh::matrix4f& modelview, const glh::matrix4f& projection);
+	LLGLUserClipPlane(const LLPlane& plane, const glh::matrix4f& modelview, const glh::matrix4f& projection, bool apply = true);
 	~LLGLUserClipPlane();
 
 	void setPlane(F32 a, F32 b, F32 c, F32 d);
 
 private:
+	bool mApply;
+
 	glh::matrix4f mProjection;
 	glh::matrix4f mModelview;
 };