From 2db5af1e1a64d7048ce2f0db4b83d8b10c7f734d Mon Sep 17 00:00:00 2001
From: Alexandra Bokinsky <abokinsky@geometrictoolsinc.com>
Date: Tue, 15 Mar 2011 11:45:09 -0400
Subject: Port of NVIDIA OpenGL Dual Depth Peeling demo.
 http://developer.download.nvidia.com/SDK/10.5/opengl/samples.html

---
 .../dualDepthPeeling/shaders/shade_fragment.glsl   | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 src/demos/dualDepthPeeling/shaders/shade_fragment.glsl

(limited to 'src/demos/dualDepthPeeling/shaders/shade_fragment.glsl')

diff --git a/src/demos/dualDepthPeeling/shaders/shade_fragment.glsl b/src/demos/dualDepthPeeling/shaders/shade_fragment.glsl
new file mode 100644
index 0000000..94f8dcc
--- /dev/null
+++ b/src/demos/dualDepthPeeling/shaders/shade_fragment.glsl
@@ -0,0 +1,40 @@
+//--------------------------------------------------------------------------------------
+// Order Independent Transparency Fragment Shader
+//
+// Author: Louis Bavoil
+// Email: sdkfeedback@nvidia.com
+//
+// Copyright (c) NVIDIA Corporation. All rights reserved.
+//--------------------------------------------------------------------------------------
+
+uniform float Alpha;
+
+#define COLOR_FREQ 30.0
+#define ALPHA_FREQ 30.0
+
+#if 1
+vec4 ShadeFragment()
+{
+	float xWorldPos = gl_TexCoord[0].x;
+	float yWorldPos = gl_TexCoord[0].y;
+	float diffuse = gl_TexCoord[0].z;
+
+	vec4 color;
+	float i = floor(xWorldPos * COLOR_FREQ);
+	float j = floor(yWorldPos * ALPHA_FREQ);
+	color.rgb = (fmod(i, 2.0) == 0) ? vec3(.4,.85,.0) : vec3(1.0);
+	//color.a = (fmod(j, 2.0) == 0) ? Alpha : 0.2;
+	color.a = Alpha;
+
+	color.rgb *= diffuse;
+	return color;
+}
+#else
+vec4 ShadeFragment()
+{
+	vec4 color;
+	color.rgb = vec3(.4,.85,.0);
+	color.a = Alpha;
+	return color;
+}
+#endif
-- 
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