// BEGIN_COPYRIGHT -*- glean -*-
// 
// Copyright (C) 1999  Allen Akin   All Rights Reserved.
// 
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the
// Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL ALLEN AKIN BE
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// tfragprog.h:  Test GL_ARB_fragment_program extension.
// Brian Paul  22 October 2005

#ifndef __tfragprog_h__
#define __tfragprog_h__

// If DEVEL_MODE==1 we generate a tall window of color swatches, one per
// fragment program, which can be eyeballed against a reference image.
// Use this if glReadPixels functionality is not working yet.
#undef windowWidth
#undef windowHeight
#define DEVEL_MODE 0
#if DEVEL_MODE
#define windowWidth 200
#define windowHeight 850
#else
#define windowWidth 100
#define windowHeight 100
#endif


#include "tmultitest.h"

namespace GLEAN {


class FragmentProgram
{
public:
	const char *name;
	const char *progString;
	GLfloat expectedColor[4];
	GLfloat expectedZ;
};


class FragmentProgramTest: public MultiTest
{
public:
	FragmentProgramTest(const char* testName, const char* filter,
			    const char *extensions, const char* description):
		MultiTest(testName, filter, extensions, description),
		tolerance()
	{
	}

	virtual void runOne(MultiTestResult &r, Window &w);

private:
	GLfloat tolerance[5];
	void setup(void);
	bool equalColors(const GLfloat a[4], const GLfloat b[4]) const;
	bool equalDepth(GLfloat z0, GLfloat z1) const;
	bool testProgram(const FragmentProgram &p);
	void reportFailure(const char *programName,
                           const GLfloat expectedColor[4],
                           const GLfloat actualColor[4] ) const;
	void reportZFailure(const char *programName,
			    GLfloat expectedZ, GLfloat actualZ) const;
};

} // namespace GLEAN

#endif // __tfragprog_h__