+#ifndef _SANDBOX_EFFECT_H
+#define _SANDBOX_EFFECT_H 1
+
+// This effect, by default, does nothing.
+//
+// But imagine all the cool things you can make it do! Thus, the SandboxEffect
+// is intended to be a sandbox for you to have a place to write your test or
+// throwaway code. When you're happy, you can do a bit of search and replace
+// to give it a proper name and its own place in the build system.
+
+#include "effect.h"
+
+class SandboxEffect : public Effect {
+public:
+ SandboxEffect();
+ std::string output_fragment_shader();
+
+ void set_uniforms(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
+
+private:
+ float parm;
+};
+
+#endif // !defined(_SANDBOX_EFFECT_H)