+const bool use_color = false;
+
+#pragma MSP stage(vertex)
+layout(location=0) in vec4 position;
+layout(location=1) in vec4 color;
+void main()
+{
+ gl_Position = position;
+ passthrough;
+}
+
+#pragma MSP stage(fragment)
+layout(location=0) out vec4 frag_color;
+void main()
+{
+ frag_color = (use_color ? color : vec4(1.0));
+}
+
+/* Expected output: vertex
+layout(location=0) in vec4 position;
+void main()
+{
+ gl_Position = position;
+}
+*/
+
+/* Expected output: fragment
+layout(location=0) out vec4 frag_color;
+void main()
+{
+ frag_color = vec4(1.0);
+}
+*/