Initial version of decoding shaders.

examples/DecodeOnGPU/decode.vert

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+#version 140
+
+in vec4 position; // This will be the position of the vertex in model-space
+
+// The usual matrices are provided
+uniform mat4 cameraToClipMatrix;
+uniform mat4 worldToCameraMatrix;
+uniform mat4 modelToWorldMatrix;
+
+// This will be used by the fragment shader to calculate flat-shaded normals. This is an unconventional approach
+// but we use it in this example framework because not all surface extractor generate surface normals.
+out vec4 worldPosition;
+
+void main()
+{
+	// Standard sequence of OpenGL transformations.
+	worldPosition = modelToWorldMatrix * position;
+	vec4 cameraPosition = worldToCameraMatrix * worldPosition;
+	gl_Position = cameraToClipMatrix * cameraPosition;
+}