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diff --git a/src/demos/dualDepthPeeling/shader/front_peeling_final.fp b/src/demos/dualDepthPeeling/shader/front_peeling_final.fp
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+//--------------------------------------------------------------------------------------
+// Order Independent Transparency with Depth Peeling
+//
+// Author: Louis Bavoil
+//
+// Copyright (c) NVIDIA Corporation. All rights reserved.
+//--------------------------------------------------------------------------------------
+
+uniform samplerRECT ColorTex;
+uniform vec3 BackgroundColor;
+
+void main(void)
+{
+ vec4 frontColor = textureRect(ColorTex, gl_FragCoord.xy);
+ gl_FragColor.rgb = frontColor + BackgroundColor * frontColor.a;
+}