xref: /external/deqp/modules/gles2/functional/es2fShaderOperatorTests.cpp

/*-------------------------------------------------------------------------
 * drawElements Quality Program OpenGL ES 2.0 Module
 * -------------------------------------------------
 *
 * Copyright 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *//*!
 * \file
 * \brief Shader operators tests.
 *//*--------------------------------------------------------------------*/

#include "es2fShaderOperatorTests.hpp"
#include "glsShaderRenderCase.hpp"
#include "gluShaderUtil.hpp"
#include "tcuVectorUtil.hpp"

#include "deStringUtil.hpp"
#include "deInt32.h"
#include "deMemory.h"

#include <map>

using namespace tcu;
using namespace glu;
using namespace deqp::gls;

using std::map;
using std::pair;
using std::vector;
using std::string;
using std::ostringstream;

namespace deqp
{
namespace gles2
{
namespace Functional
{

#if defined(abs)
#	undef abs
#endif

using de::min;
using de::max;
using de::clamp;

// \note VS2013 gets confused without these
using tcu::exp2;
using tcu::log2;

inline float abs		(float v)			{ return deFloatAbs(v); }

inline bool logicalAnd	(bool a, bool b)	{ return (a && b); }
inline bool logicalOr	(bool a, bool b)	{ return (a || b); }
inline bool logicalXor	(bool a, bool b)	{ return (a != b); }

#define DEFINE_VEC_FLOAT_FUNCTION(FUNC_NAME, SCALAR_OP_NAME)					\
template<int Size>																\
inline Vector<float, Size> FUNC_NAME (const Vector<float, Size>& v, float s)	\
{																				\
	Vector<float, Size> res;													\
	for (int i = 0; i < Size; i++)												\
		res[i] = SCALAR_OP_NAME(v[i], s);										\
	return res;																	\
}

#define DEFINE_FLOAT_VEC_FUNCTION(FUNC_NAME, SCALAR_OP_NAME)					\
template<int Size>																\
inline Vector<float, Size> FUNC_NAME (float s, const Vector<float, Size>& v)	\
{																				\
	Vector<float, Size> res;													\
	for (int i = 0; i < Size; i++)												\
		res[i] = SCALAR_OP_NAME(s, v[i]);										\
	return res;																	\
}

#define DEFINE_VEC_VEC_FLOAT_FUNCTION(FUNC_NAME, SCALAR_OP_NAME)												\
template<int Size>																								\
inline Vector<float, Size> FUNC_NAME (const Vector<float, Size>& v0, const Vector<float, Size>& v1, float s)	\
{																												\
	Vector<float, Size> res;																					\
	for (int i = 0; i < Size; i++)																				\
		res[i] = SCALAR_OP_NAME(v0[i], v1[i], s);																\
	return res;																									\
}

#define DEFINE_VEC_FLOAT_FLOAT_FUNCTION(FUNC_NAME, SCALAR_OP_NAME)							\
template<int Size>																			\
inline Vector<float, Size> FUNC_NAME (const Vector<float, Size>& v, float s0, float s1)		\
{																							\
	Vector<float, Size> res;																\
	for (int i = 0; i < Size; i++)															\
		res[i] = SCALAR_OP_NAME(v[i], s0, s1);												\
	return res;																				\
}

#define DEFINE_FLOAT_FLOAT_VEC_FUNCTION(FUNC_NAME, SCALAR_OP_NAME)							\
template<int Size>																			\
inline Vector<float, Size> FUNC_NAME (float s0, float s1, const Vector<float, Size>& v)		\
{																							\
	Vector<float, Size> res;																\
	for (int i = 0; i < Size; i++)															\
		res[i] = SCALAR_OP_NAME(s0, s1, v[i]);												\
	return res;																				\
}

DEFINE_VEC_FLOAT_FUNCTION		(modVecFloat,				mod)
DEFINE_VEC_FLOAT_FUNCTION		(minVecFloat,				min)
DEFINE_VEC_FLOAT_FUNCTION		(maxVecFloat,				max)
DEFINE_VEC_FLOAT_FLOAT_FUNCTION	(clampVecFloatFloat,		clamp)
DEFINE_VEC_VEC_FLOAT_FUNCTION	(mixVecVecFloat,			mix)
DEFINE_FLOAT_VEC_FUNCTION		(stepFloatVec,				step)
DEFINE_FLOAT_FLOAT_VEC_FUNCTION	(smoothStepFloatFloatVec,	smoothStep)

#undef DEFINE_VEC_FLOAT_FUNCTION
#undef DEFINE_VEC_VEC_FLOAT_FUNCTION
#undef DEFINE_VEC_FLOAT_FLOAT_FUNCTION
#undef DEFINE_FLOAT_FLOAT_VEC_FUNCTION

inline float	addOne (float v)	{ return v + 1.0f; };
inline float	subOne (float v)	{ return v - 1.0f; };
inline int		addOne (int v)		{ return v + 1; };
inline int		subOne (int v)		{ return v - 1; };

template<int Size> inline Vector<float, Size>	addOne (const Vector<float, Size>& v)	{ return v + 1.0f; };
template<int Size> inline Vector<float, Size>	subOne (const Vector<float, Size>& v)	{ return v - 1.0f; };
template<int Size> inline Vector<int, Size>		addOne (const Vector<int, Size>& v)		{ return v + 1; };
template<int Size> inline Vector<int, Size>		subOne (const Vector<int, Size>& v)		{ return v - 1; };

template<typename T> inline T selection	(bool cond, T a, T b)	{ return cond ? a : b; };

template<typename T, int Size> inline Vector<T, Size> addVecScalar	(const Vector<T, Size>& v, T s) { return v + s; };
template<typename T, int Size> inline Vector<T, Size> subVecScalar	(const Vector<T, Size>& v, T s) { return v - s; };
template<typename T, int Size> inline Vector<T, Size> mulVecScalar	(const Vector<T, Size>& v, T s) { return v * s; };
template<typename T, int Size> inline Vector<T, Size> divVecScalar	(const Vector<T, Size>& v, T s) { return v / s; };

template<typename T, int Size> inline Vector<T, Size> addScalarVec	(T s, const Vector<T, Size>& v) { return s + v; };
template<typename T, int Size> inline Vector<T, Size> subScalarVec	(T s, const Vector<T, Size>& v) { return s - v; };
template<typename T, int Size> inline Vector<T, Size> mulScalarVec	(T s, const Vector<T, Size>& v) { return s * v; };
template<typename T, int Size> inline Vector<T, Size> divScalarVec	(T s, const Vector<T, Size>& v) { return s / v; };

// Reference functions for specific sequence operations for the sequence operator tests.

// Reference for expression "in0, in2 + in1, in1 + in0"
inline Vec4		sequenceNoSideEffCase0 (const Vec4& in0, const Vec4& in1, const Vec4& in2)		{ DE_UNREF(in2); return in1 + in0; }
// Reference for expression "in0, in2 + in1, in1 + in0"
inline int		sequenceNoSideEffCase1 (float in0, int in1, float in2)							{ DE_UNREF(in0); DE_UNREF(in2); return in1 + in1; }
// Reference for expression "in0 && in1, in0, ivec2(vec2(in0) + in2)"
inline IVec2	sequenceNoSideEffCase2 (bool in0, bool in1, const Vec2& in2)					{ DE_UNREF(in1); return IVec2((int)((float)in0 + in2.x()), (int)((float)in0 + in2.y())); }
// Reference for expression "in0 + vec4(in1), in2, in1"
inline IVec4	sequenceNoSideEffCase3 (const Vec4& in0, const IVec4& in1, const BVec4& in2)	{ DE_UNREF(in0); DE_UNREF(in2); return in1; }
// Reference for expression "in0++, in1 = in0 + in2, in2 = in1"
inline Vec4		sequenceSideEffCase0 (const Vec4& in0, const Vec4& in1, const Vec4& in2)		{ DE_UNREF(in1); return in0 + 1.0f + in2; }
// Reference for expression "in1++, in0 = float(in1), in1 = int(in0 + in2)"
inline int		sequenceSideEffCase1 (float in0, int in1, float in2)							{ DE_UNREF(in0); return (int)(in1 + 1.0f + in2); }
// Reference for expression "in1 = in0, in2++, in2 = in2 + vec2(in1), ivec2(in2)"
inline IVec2	sequenceSideEffCase2 (bool in0, bool in1, const Vec2& in2)						{ DE_UNREF(in1); return (in2 + Vec2(1.0f) + Vec2((float)in0)).asInt(); }
// Reference for expression "in0 = in0 + vec4(in2), in1 = in1 + ivec4(in0), in1++"
inline IVec4	sequenceSideEffCase3 (const Vec4& in0, const IVec4& in1, const BVec4& in2)		{ return in1 + (in0 + Vec4((float)in2.x(), (float)in2.y(), (float)in2.z(), (float)in2.w())).asInt(); }

// ShaderEvalFunc-type wrappers for the above functions.
void evalSequenceNoSideEffCase0	(ShaderEvalContext& ctx) { ctx.color		= sequenceNoSideEffCase0(ctx.in[0].swizzle(1, 2, 3, 0), ctx.in[1].swizzle(3, 2, 1, 0), ctx.in[2].swizzle(0, 3, 2, 1)); }
void evalSequenceNoSideEffCase1	(ShaderEvalContext& ctx) { ctx.color.x()	= (float)sequenceNoSideEffCase1(ctx.in[0].z(), (int)ctx.in[1].x(), ctx.in[2].y()); }
void evalSequenceNoSideEffCase2	(ShaderEvalContext& ctx) { ctx.color.yz()	= sequenceNoSideEffCase2(ctx.in[0].z() > 0.0f, ctx.in[1].x() > 0.0f, ctx.in[2].swizzle(2, 1)).asFloat(); }
void evalSequenceNoSideEffCase3	(ShaderEvalContext& ctx) { ctx.color		= sequenceNoSideEffCase3(ctx.in[0].swizzle(1, 2, 3, 0), ctx.in[1].swizzle(3, 2, 1, 0).asInt(), greaterThan(ctx.in[2].swizzle(0, 3, 2, 1), Vec4(0.0f, 0.0f, 0.0f, 0.0f))).asFloat(); }
void evalSequenceSideEffCase0	(ShaderEvalContext& ctx) { ctx.color		= sequenceSideEffCase0(ctx.in[0].swizzle(1, 2, 3, 0), ctx.in[1].swizzle(3, 2, 1, 0), ctx.in[2].swizzle(0, 3, 2, 1)); }
void evalSequenceSideEffCase1	(ShaderEvalContext& ctx) { ctx.color.x()	= (float)sequenceSideEffCase1(ctx.in[0].z(), (int)ctx.in[1].x(), ctx.in[2].y()); }
void evalSequenceSideEffCase2	(ShaderEvalContext& ctx) { ctx.color.yz()	= sequenceSideEffCase2(ctx.in[0].z() > 0.0f, ctx.in[1].x() > 0.0f, ctx.in[2].swizzle(2, 1)).asFloat(); }
void evalSequenceSideEffCase3	(ShaderEvalContext& ctx) { ctx.color		= sequenceSideEffCase3(ctx.in[0].swizzle(1, 2, 3, 0), ctx.in[1].swizzle(3, 2, 1, 0).asInt(), greaterThan(ctx.in[2].swizzle(0, 3, 2, 1), Vec4(0.0f, 0.0f, 0.0f, 0.0f))).asFloat(); }

enum
{
	MAX_INPUTS = 3
};

enum PrecisionMask
{
	PRECMASK_NA				= 0,						//!< Precision not applicable (booleans)
	PRECMASK_LOWP			= (1<<PRECISION_LOWP),
	PRECMASK_MEDIUMP		= (1<<PRECISION_MEDIUMP),
	PRECMASK_HIGHP			= (1<<PRECISION_HIGHP),

	PRECMASK_MEDIUMP_HIGHP	= (1<<PRECISION_MEDIUMP) | (1<<PRECISION_HIGHP),
	PRECMASK_ALL			= (1<<PRECISION_LOWP) | (1<<PRECISION_MEDIUMP) | (1<<PRECISION_HIGHP)
};

enum ValueType
{
	VALUE_NONE			= 0,
	VALUE_FLOAT			= (1<<0),	// float scalar
	VALUE_FLOAT_VEC		= (1<<1),	// float vector
	VALUE_FLOAT_GENTYPE	= (1<<2),	// float scalar/vector
	VALUE_VEC3			= (1<<3),	// vec3 only
	VALUE_MATRIX		= (1<<4),	// matrix
	VALUE_BOOL			= (1<<5),	// boolean scalar
	VALUE_BOOL_VEC		= (1<<6),	// boolean vector
	VALUE_BOOL_GENTYPE	= (1<<7),	// boolean scalar/vector
	VALUE_INT			= (1<<8),	// int scalar
	VALUE_INT_VEC		= (1<<9),	// int vector
	VALUE_INT_GENTYPE	= (1<<10),	// int scalar/vector

	// Shorthands.
	F				= VALUE_FLOAT,
	FV				= VALUE_FLOAT_VEC,
	GT				= VALUE_FLOAT_GENTYPE,
	V3				= VALUE_VEC3,
	M				= VALUE_MATRIX,
	B				= VALUE_BOOL,
	BV				= VALUE_BOOL_VEC,
	BGT				= VALUE_BOOL_GENTYPE,
	I				= VALUE_INT,
	IV				= VALUE_INT_VEC,
	IGT				= VALUE_INT_GENTYPE
};

static inline bool isScalarType (ValueType type)
{
	return type == VALUE_FLOAT || type == VALUE_BOOL || type == VALUE_INT;
}

struct Value
{
	Value (ValueType valueType_, float rangeMin_, float rangeMax_)
		: valueType	(valueType_)
		, rangeMin	(rangeMin_)
		, rangeMax	(rangeMax_)
	{
	}

	ValueType	valueType;
	float		rangeMin;
	float		rangeMax;
};

enum OperationType
{
	FUNCTION = 0,
	OPERATOR,
	SIDE_EFFECT_OPERATOR // Test the side-effect (as opposed to the result) of a side-effect operator.
};

struct BuiltinFuncInfo
{
	BuiltinFuncInfo (const char* caseName_, const char* shaderFuncName_, ValueType outValue_, Value input0_, Value input1_, Value input2_, float resultScale_, float resultBias_, deUint32 precisionMask_, ShaderEvalFunc evalFuncScalar_, ShaderEvalFunc evalFuncVec2_, ShaderEvalFunc evalFuncVec3_, ShaderEvalFunc evalFuncVec4_, OperationType type_=FUNCTION, bool isUnaryPrefix_=true)
		: caseName			(caseName_)
		, shaderFuncName	(shaderFuncName_)
		, outValue			(outValue_)
		, input0			(input0_)
		, input1			(input1_)
		, input2			(input2_)
		, resultScale		(resultScale_)
		, resultBias		(resultBias_)
		, precisionMask		(precisionMask_)
		, evalFuncScalar	(evalFuncScalar_)
		, evalFuncVec2		(evalFuncVec2_)
		, evalFuncVec3		(evalFuncVec3_)
		, evalFuncVec4		(evalFuncVec4_)
		, type				(type_)
		, isUnaryPrefix		(isUnaryPrefix_)
	{
	}

	const char*		caseName;			//!< Name of case.
	const char*		shaderFuncName;		//!< Name in shading language.
	ValueType		outValue;
	Value			input0;
	Value			input1;
	Value			input2;
	float			resultScale;
	float			resultBias;
	deUint32		precisionMask;
	ShaderEvalFunc	evalFuncScalar;
	ShaderEvalFunc	evalFuncVec2;
	ShaderEvalFunc	evalFuncVec3;
	ShaderEvalFunc	evalFuncVec4;
	OperationType	type;
	bool			isUnaryPrefix;		//!< Whether a unary operator is a prefix operator; redundant unless unary.
};

static inline BuiltinFuncInfo BuiltinOperInfo (const char* caseName_, const char* shaderFuncName_, ValueType outValue_, Value input0_, Value input1_, Value input2_, float resultScale_, float resultBias_, deUint32 precisionMask_, ShaderEvalFunc evalFuncScalar_, ShaderEvalFunc evalFuncVec2_, ShaderEvalFunc evalFuncVec3_, ShaderEvalFunc evalFuncVec4_)
{
	return BuiltinFuncInfo(caseName_, shaderFuncName_, outValue_, input0_, input1_, input2_, resultScale_, resultBias_, precisionMask_, evalFuncScalar_, evalFuncVec2_, evalFuncVec3_, evalFuncVec4_, OPERATOR);
}

// For postfix (unary) operators.
static inline BuiltinFuncInfo BuiltinPostOperInfo (const char* caseName_, const char* shaderFuncName_, ValueType outValue_, Value input0_, Value input1_, Value input2_, float resultScale_, float resultBias_, deUint32 precisionMask_, ShaderEvalFunc evalFuncScalar_, ShaderEvalFunc evalFuncVec2_, ShaderEvalFunc evalFuncVec3_, ShaderEvalFunc evalFuncVec4_)
{
	return BuiltinFuncInfo(caseName_, shaderFuncName_, outValue_, input0_, input1_, input2_, resultScale_, resultBias_, precisionMask_, evalFuncScalar_, evalFuncVec2_, evalFuncVec3_, evalFuncVec4_, OPERATOR, false);
}

static inline BuiltinFuncInfo BuiltinSideEffOperInfo (const char* caseName_, const char* shaderFuncName_, ValueType outValue_, Value input0_, Value input1_, Value input2_, float resultScale_, float resultBias_, deUint32 precisionMask_, ShaderEvalFunc evalFuncScalar_, ShaderEvalFunc evalFuncVec2_, ShaderEvalFunc evalFuncVec3_, ShaderEvalFunc evalFuncVec4_)
{
	return BuiltinFuncInfo(caseName_, shaderFuncName_, outValue_, input0_, input1_, input2_, resultScale_, resultBias_, precisionMask_, evalFuncScalar_, evalFuncVec2_, evalFuncVec3_, evalFuncVec4_, SIDE_EFFECT_OPERATOR);
}

// For postfix (unary) operators, testing side-effect.
static inline BuiltinFuncInfo BuiltinPostSideEffOperInfo (const char* caseName_, const char* shaderFuncName_, ValueType outValue_, Value input0_, Value input1_, Value input2_, float resultScale_, float resultBias_, deUint32 precisionMask_, ShaderEvalFunc evalFuncScalar_, ShaderEvalFunc evalFuncVec2_, ShaderEvalFunc evalFuncVec3_, ShaderEvalFunc evalFuncVec4_)
{
	return BuiltinFuncInfo(caseName_, shaderFuncName_, outValue_, input0_, input1_, input2_, resultScale_, resultBias_, precisionMask_, evalFuncScalar_, evalFuncVec2_, evalFuncVec3_, evalFuncVec4_, SIDE_EFFECT_OPERATOR, false);
}

// BuiltinFuncGroup

struct BuiltinFuncGroup
{
						BuiltinFuncGroup	(const char* name_, const char* description_) : name(name_), description(description_) {}
	BuiltinFuncGroup&	operator<<			(const BuiltinFuncInfo& info) { funcInfos.push_back(info); return *this; }

	const char*						name;
	const char*						description;
	std::vector<BuiltinFuncInfo>	funcInfos;
};

static const char* s_inSwizzles[MAX_INPUTS][4] =
{
	{ "z", "wy", "zxy", "yzwx" },
	{ "x", "yx", "yzx", "wzyx" },
	{ "y", "zy", "wyz", "xwzy" }
};

static const char* s_outSwizzles[]	= { "x", "yz", "xyz", "xyzw" };

// OperatorShaderEvaluator

class OperatorShaderEvaluator : public ShaderEvaluator
{
public:
	OperatorShaderEvaluator (ShaderEvalFunc evalFunc, float scale, float bias)
	{
		m_evalFunc	= evalFunc;
		m_scale		= scale;
		m_bias		= bias;
	}

	virtual ~OperatorShaderEvaluator (void)
	{
	}

	virtual void evaluate (ShaderEvalContext& ctx)
	{
		m_evalFunc(ctx);
		ctx.color = ctx.color * m_scale + m_bias;
	}

private:
	ShaderEvalFunc	m_evalFunc;
	float			m_scale;
	float			m_bias;
};

// Concrete value.

struct ShaderValue
{
	ShaderValue (DataType type_, float rangeMin_, float rangeMax_)
		: type		(type_)
		, rangeMin	(rangeMin_)
		, rangeMax	(rangeMax_)
	{
	}

	ShaderValue (void)
		: type		(TYPE_LAST)
		, rangeMin	(0.0f)
		, rangeMax	(0.0f)
	{
	}

	DataType	type;
	float		rangeMin;
	float		rangeMax;
};

struct ShaderDataSpec
{
	ShaderDataSpec (void)
		: resultScale	(1.0f)
		, resultBias	(0.0f)
		, precision		(PRECISION_LAST)
		, output		(TYPE_LAST)
		, numInputs		(0)
	{
	}

	float			resultScale;
	float			resultBias;
	Precision		precision;
	DataType		output;
	int				numInputs;
	ShaderValue		inputs[MAX_INPUTS];
};

// ShaderOperatorCase

class ShaderOperatorCase : public ShaderRenderCase
{
public:
								ShaderOperatorCase		(Context& context, const char* caseName, const char* description, bool isVertexCase, ShaderEvalFunc evalFunc, const char* shaderOp, const ShaderDataSpec& spec);
	virtual						~ShaderOperatorCase		(void);

private:
								ShaderOperatorCase		(const ShaderOperatorCase&);	// not allowed!
	ShaderOperatorCase&			operator=				(const ShaderOperatorCase&);	// not allowed!

	OperatorShaderEvaluator		m_evaluator;
};

ShaderOperatorCase::ShaderOperatorCase (Context& context, const char* caseName, const char* description, bool isVertexCase, ShaderEvalFunc evalFunc, const char* shaderOp, const ShaderDataSpec& spec)
	: ShaderRenderCase(context.getTestContext(), context.getRenderContext(), context.getContextInfo(), caseName, description, isVertexCase, m_evaluator)
	, m_evaluator(evalFunc, spec.resultScale, spec.resultBias)
{
	const char*		precision	= spec.precision != PRECISION_LAST ? getPrecisionName(spec.precision) : DE_NULL;
	const char*		inputPrecision[MAX_INPUTS];

	ostringstream	vtx;
	ostringstream	frag;
	ostringstream&	op			= isVertexCase ? vtx : frag;

	// Compute precision for inputs.
	for (int i = 0; i < spec.numInputs; i++)
	{
		bool		isBoolVal	= de::inRange<int>(spec.inputs[i].type, TYPE_BOOL, TYPE_BOOL_VEC4);
		bool		isIntVal	= de::inRange<int>(spec.inputs[i].type, TYPE_INT, TYPE_INT_VEC4);
		// \note Mediump interpolators are used for booleans and lowp ints.
		Precision	prec		= isBoolVal || (isIntVal && spec.precision == PRECISION_LOWP) ? PRECISION_MEDIUMP : spec.precision;
		inputPrecision[i] = getPrecisionName(prec);
	}

	// Attributes.
	vtx << "attribute highp vec4 a_position;\n";
	for (int i = 0; i < spec.numInputs; i++)
		vtx << "attribute " << inputPrecision[i] << " vec4 a_in" << i << ";\n";

	if (isVertexCase)
	{
		vtx << "varying mediump vec4 v_color;\n";
		frag << "varying mediump vec4 v_color;\n";
	}
	else
	{
		for (int i = 0; i < spec.numInputs; i++)
		{
			vtx << "varying " << inputPrecision[i] << " vec4 v_in" << i << ";\n";
			frag << "varying " << inputPrecision[i] << " vec4 v_in" << i << ";\n";
		}
	}

	vtx << "\n";
	vtx << "void main()\n";
	vtx << "{\n";
	vtx << "	gl_Position = a_position;\n";

	frag << "\n";
	frag << "void main()\n";
	frag << "{\n";

	// Expression inputs.
	string prefix = isVertexCase ? "a_" : "v_";
	for (int i = 0; i < spec.numInputs; i++)
	{
		DataType		inType		= spec.inputs[i].type;
		int				inSize		= getDataTypeScalarSize(inType);
		bool			isInt		= de::inRange<int>(inType, TYPE_INT, TYPE_INT_VEC4);
		bool			isBool		= de::inRange<int>(inType, TYPE_BOOL, TYPE_BOOL_VEC4);
		const char*		typeName	= getDataTypeName(inType);
		const char*		swizzle		= s_inSwizzles[i][inSize-1];

		op << "\t";
		if (precision && !isBool) op << precision << " ";

		op << typeName << " in" << i << " = ";

		if (isBool)
		{
			if (inSize == 1)	op << "(";
			else				op << "greaterThan(";
		}
		else if (isInt)
			op << typeName << "(";

		op << prefix << "in" << i << "." << swizzle;

		if (isBool)
		{
			if (inSize == 1)	op << " > 0.0)";
			else				op << ", vec" << inSize << "(0.0))";
		}
		else if (isInt)
			op << ")";

		op << ";\n";
	}

	// Result variable.
	{
		const char* outTypeName = getDataTypeName(spec.output);
		bool		isBoolOut	= de::inRange<int>(spec.output, TYPE_BOOL, TYPE_BOOL_VEC4);

		op << "\t";
		if (precision && !isBoolOut) op << precision << " ";
		op << outTypeName << " res = " << outTypeName << "(0.0);\n\n";
	}

	// Expression.
	op << "\t" << shaderOp << "\n\n";

	// Convert to color.
	bool	isResFloatVec	= de::inRange<int>(spec.output, TYPE_FLOAT, TYPE_FLOAT_VEC4);
	int		outScalarSize	= getDataTypeScalarSize(spec.output);

	op << "\tmediump vec4 color = vec4(0.0, 0.0, 0.0, 1.0);\n";
	op << "\tcolor." << s_outSwizzles[outScalarSize-1] << " = ";

	if (!isResFloatVec && outScalarSize == 1)
		op << "float(res)";
	else if (!isResFloatVec)
		op << "vec" << outScalarSize << "(res)";
	else
		op << "res";

	op << ";\n";

	// Scale & bias.
	float	resultScale		= spec.resultScale;
	float	resultBias		= spec.resultBias;
	if ((resultScale != 1.0f) || (resultBias != 0.0f))
	{
		op << "\tcolor = color";
		if (resultScale != 1.0f) op << " * " << de::floatToString(resultScale, 2);
		if (resultBias != 0.0f)  op << " + " << de::floatToString(resultBias, 2);
		op << ";\n";
	}

	// ..
	if (isVertexCase)
	{
		vtx << "	v_color = color;\n";
		frag << "	gl_FragColor = v_color;\n";
	}
	else
	{
		for (int i = 0; i < spec.numInputs; i++)
		vtx << "	v_in" << i << " = a_in" << i << ";\n";
		frag << "	gl_FragColor = color;\n";
	}

	vtx << "}\n";
	frag << "}\n";

	m_vertShaderSource = vtx.str();
	m_fragShaderSource = frag.str();

	// Setup the user attributes.
	m_userAttribTransforms.resize(spec.numInputs);
	for (int inputNdx = 0; inputNdx < spec.numInputs; inputNdx++)
	{
		const ShaderValue& v = spec.inputs[inputNdx];
		DE_ASSERT(v.type != TYPE_LAST);

		float scale		= (v.rangeMax - v.rangeMin);
		float minBias	= v.rangeMin;
		float maxBias	= v.rangeMax;
		Mat4  attribMatrix;

		for (int rowNdx = 0; rowNdx < 4; rowNdx++)
		{
			Vec4 row;

			switch ((rowNdx + inputNdx) % 4)
			{
				case 0:	row = Vec4(scale, 0.0f, 0.0f, minBias);		break;
				case 1:	row = Vec4(0.0f, scale, 0.0f, minBias);		break;
				case 2:	row = Vec4(-scale, 0.0f, 0.0f, maxBias);	break;
				case 3:	row = Vec4(0.0f, -scale, 0.0f, maxBias);	break;
				default: DE_ASSERT(false);
			}

			attribMatrix.setRow(rowNdx, row);
		}

		m_userAttribTransforms[inputNdx] = attribMatrix;
	}
}

ShaderOperatorCase::~ShaderOperatorCase (void)
{
}

// ShaderOperatorTests.

ShaderOperatorTests::ShaderOperatorTests(Context& context)
	: TestCaseGroup(context, "operator", "Operator tests.")
{
}

ShaderOperatorTests::~ShaderOperatorTests (void)
{
}

// Vector math functions.
template<typename T> inline T nop (T f) { return f; }

template <typename T, int Size>
Vector<T, Size> nop (const Vector<T, Size>& v) { return v; }

#define DECLARE_UNARY_GENTYPE_FUNCS(FUNC_NAME)																			\
	void eval_##FUNC_NAME##_float	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].z()); }					\
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1)); }		\
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1)); }	\
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0)); }

#define DECLARE_BINARY_GENTYPE_FUNCS(FUNC_NAME)																											\
	void eval_##FUNC_NAME##_float	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].z(),                 c.in[1].x()); }					\
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1),       c.in[1].swizzle(1, 0)); }			\
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1),    c.in[1].swizzle(1, 2, 0)); }		\
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0), c.in[1].swizzle(3, 2, 1, 0)); }

#define DECLARE_TERNARY_GENTYPE_FUNCS(FUNC_NAME)																																	\
	void eval_##FUNC_NAME##_float	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].z(),                 c.in[1].x(),                 c.in[2].y()); }					\
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1),       c.in[1].swizzle(1, 0),       c.in[2].swizzle(2, 1)); }			\
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1),    c.in[1].swizzle(1, 2, 0),    c.in[2].swizzle(3, 1, 2)); }		\
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0), c.in[1].swizzle(3, 2, 1, 0), c.in[2].swizzle(0, 3, 2, 1)); }

#define DECLARE_UNARY_SCALAR_GENTYPE_FUNCS(FUNC_NAME)																	\
	void eval_##FUNC_NAME##_float	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].z()); }					\
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].swizzle(3, 1)); }		\
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1)); }	\
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0)); }

#define DECLARE_BINARY_SCALAR_GENTYPE_FUNCS(FUNC_NAME)																									\
	void eval_##FUNC_NAME##_float	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].z(),                 c.in[1].x()); }					\
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].swizzle(3, 1),       c.in[1].swizzle(1, 0)); }			\
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1),    c.in[1].swizzle(1, 2, 0)); }		\
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color.x()	= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0), c.in[1].swizzle(3, 2, 1, 0)); }

#define DECLARE_BINARY_BOOL_FUNCS(FUNC_NAME)																		\
	void eval_##FUNC_NAME##_bool	(ShaderEvalContext& c) { c.color.x()	= (float)FUNC_NAME(c.in[0].z() > 0.0f, c.in[1].x() > 0.0f); }

#define DECLARE_UNARY_BOOL_GENTYPE_FUNCS(FUNC_NAME)																											\
	void eval_##FUNC_NAME##_bool	(ShaderEvalContext& c) { c.color.x()	= (float)FUNC_NAME(c.in[0].z() > 0.0f); }										\
	void eval_##FUNC_NAME##_bvec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(greaterThan(c.in[0].swizzle(3, 1), Vec2(0.0f))).asFloat(); }		\
	void eval_##FUNC_NAME##_bvec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(greaterThan(c.in[0].swizzle(2, 0, 1), Vec3(0.0f))).asFloat(); }		\
	void eval_##FUNC_NAME##_bvec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(greaterThan(c.in[0].swizzle(1, 2, 3, 0), Vec4(0.0f))).asFloat(); }

#define DECLARE_TERNARY_BOOL_GENTYPE_FUNCS(FUNC_NAME)																																																					\
	void eval_##FUNC_NAME##_bool	(ShaderEvalContext& c) { c.color.x()	= (float)FUNC_NAME(c.in[0].z() > 0.0f,                            c.in[1].x() > 0.0f,                                   c.in[2].y() > 0.0f); }												\
	void eval_##FUNC_NAME##_bvec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(greaterThan(c.in[0].swizzle(3, 1), Vec2(0.0f)),       greaterThan(c.in[1].swizzle(1, 0), Vec2(0.0f)),       greaterThan(c.in[2].swizzle(2, 1), Vec2(0.0f))).asFloat(); }		\
	void eval_##FUNC_NAME##_bvec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(greaterThan(c.in[0].swizzle(2, 0, 1), Vec3(0.0f)),    greaterThan(c.in[1].swizzle(1, 2, 0), Vec3(0.0f)),    greaterThan(c.in[2].swizzle(3, 1, 2), Vec3(0.0f))).asFloat(); }		\
	void eval_##FUNC_NAME##_bvec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(greaterThan(c.in[0].swizzle(1, 2, 3, 0), Vec4(0.0f)), greaterThan(c.in[1].swizzle(3, 2, 1, 0), Vec4(0.0f)), greaterThan(c.in[2].swizzle(0, 3, 2, 1), Vec4(0.0f))).asFloat(); }

#define DECLARE_UNARY_INT_GENTYPE_FUNCS(FUNC_NAME)																						\
	void eval_##FUNC_NAME##_int		(ShaderEvalContext& c) { c.color.x()	= (float)FUNC_NAME((int)c.in[0].z()); }						\
	void eval_##FUNC_NAME##_ivec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1).asInt()).asFloat(); }		\
	void eval_##FUNC_NAME##_ivec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1).asInt()).asFloat(); }	\
	void eval_##FUNC_NAME##_ivec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0).asInt()).asFloat(); }

#define DECLARE_BINARY_INT_GENTYPE_FUNCS(FUNC_NAME)																																\
	void eval_##FUNC_NAME##_int		(ShaderEvalContext& c) { c.color.x()	= (float)tcu::FUNC_NAME((int)c.in[0].z(),				(int)c.in[1].x()); }						\
	void eval_##FUNC_NAME##_ivec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1).asInt(),			c.in[1].swizzle(1, 0).asInt()).asFloat(); }		\
	void eval_##FUNC_NAME##_ivec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1).asInt(),		c.in[1].swizzle(1, 2, 0).asInt()).asFloat(); }	\
	void eval_##FUNC_NAME##_ivec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0).asInt(),	c.in[1].swizzle(3, 2, 1, 0).asInt()).asFloat(); }

#define DECLARE_TERNARY_INT_GENTYPE_FUNCS(FUNC_NAME)																																								\
	void eval_##FUNC_NAME##_int		(ShaderEvalContext& c) { c.color.x()	= (float)FUNC_NAME((int)c.in[0].z(),                 (int)c.in[1].x(),                (int)c.in[2].y()); }								\
	void eval_##FUNC_NAME##_ivec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1).asInt(),       c.in[1].swizzle(1, 0).asInt(),       c.in[2].swizzle(2, 1).asInt()).asFloat(); }		\
	void eval_##FUNC_NAME##_ivec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1).asInt(),    c.in[1].swizzle(1, 2, 0).asInt(),    c.in[2].swizzle(3, 1, 2).asInt()).asFloat(); }	\
	void eval_##FUNC_NAME##_ivec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0).asInt(), c.in[1].swizzle(3, 2, 1, 0).asInt(), c.in[2].swizzle(0, 3, 2, 1).asInt()).asFloat(); }

#define DECLARE_VEC_FLOAT_FUNCS(FUNC_NAME) \
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1),			c.in[1].x()); } \
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1),		c.in[1].x()); } \
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0),	c.in[1].x()); }

#define DECLARE_VEC_FLOAT_FLOAT_FUNCS(FUNC_NAME) \
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1),			c.in[1].x(), c.in[2].y()); } \
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1),		c.in[1].x(), c.in[2].y()); } \
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0),	c.in[1].x(), c.in[2].y()); }

#define DECLARE_VEC_VEC_FLOAT_FUNCS(FUNC_NAME) \
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1),			c.in[1].swizzle(1, 0),			c.in[2].y()); } \
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1),		c.in[1].swizzle(1, 2, 0),		c.in[2].y()); } \
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0),	c.in[1].swizzle(3, 2, 1, 0),	c.in[2].y()); }

#define DECLARE_FLOAT_FLOAT_VEC_FUNCS(FUNC_NAME) \
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].z(), c.in[1].x(), c.in[2].swizzle(2, 1)); }			\
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].z(), c.in[1].x(), c.in[2].swizzle(3, 1, 2)); }		\
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].z(), c.in[1].x(), c.in[2].swizzle(0, 3, 2, 1)); }

#define DECLARE_FLOAT_VEC_FUNCS(FUNC_NAME) \
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].z(),					c.in[1].swizzle(1, 0)); } \
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].z(),					c.in[1].swizzle(1, 2, 0)); } \
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].z(),					c.in[1].swizzle(3, 2, 1, 0)); }

#define DECLARE_IVEC_INT_FUNCS(FUNC_NAME) \
	void eval_##FUNC_NAME##_ivec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1).asInt(),			(int)c.in[1].x()).asFloat(); } \
	void eval_##FUNC_NAME##_ivec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1).asInt(),		(int)c.in[1].x()).asFloat(); } \
	void eval_##FUNC_NAME##_ivec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0).asInt(),	(int)c.in[1].x()).asFloat(); }

#define DECLARE_INT_IVEC_FUNCS(FUNC_NAME) \
	void eval_##FUNC_NAME##_ivec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME((int)c.in[0].z(),					c.in[1].swizzle(1, 0).asInt()).asFloat(); } \
	void eval_##FUNC_NAME##_ivec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME((int)c.in[0].z(),					c.in[1].swizzle(1, 2, 0).asInt()).asFloat(); } \
	void eval_##FUNC_NAME##_ivec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME((int)c.in[0].z(),					c.in[1].swizzle(3, 2, 1, 0).asInt()).asFloat(); }

// Operators.

DECLARE_UNARY_GENTYPE_FUNCS(nop)
DECLARE_UNARY_GENTYPE_FUNCS(negate)
DECLARE_UNARY_GENTYPE_FUNCS(addOne)
DECLARE_UNARY_GENTYPE_FUNCS(subOne)
DECLARE_BINARY_GENTYPE_FUNCS(add)
DECLARE_BINARY_GENTYPE_FUNCS(sub)
DECLARE_BINARY_GENTYPE_FUNCS(mul)
DECLARE_BINARY_GENTYPE_FUNCS(div)

void eval_selection_float	(ShaderEvalContext& c) { c.color.x()	= selection(c.in[0].z() > 0.0f,		c.in[1].x(),					c.in[2].y()); }
void eval_selection_vec2	(ShaderEvalContext& c) { c.color.yz()	= selection(c.in[0].z() > 0.0f,		c.in[1].swizzle(1, 0),			c.in[2].swizzle(2, 1)); }
void eval_selection_vec3	(ShaderEvalContext& c) { c.color.xyz()	= selection(c.in[0].z() > 0.0f,		c.in[1].swizzle(1, 2, 0),		c.in[2].swizzle(3, 1, 2)); }
void eval_selection_vec4	(ShaderEvalContext& c) { c.color		= selection(c.in[0].z() > 0.0f,		c.in[1].swizzle(3, 2, 1, 0),	c.in[2].swizzle(0, 3, 2, 1)); }

DECLARE_UNARY_INT_GENTYPE_FUNCS(nop)
DECLARE_UNARY_INT_GENTYPE_FUNCS(negate)
DECLARE_UNARY_INT_GENTYPE_FUNCS(addOne)
DECLARE_UNARY_INT_GENTYPE_FUNCS(subOne)
DECLARE_BINARY_INT_GENTYPE_FUNCS(add)
DECLARE_BINARY_INT_GENTYPE_FUNCS(sub)
DECLARE_BINARY_INT_GENTYPE_FUNCS(mul)
DECLARE_BINARY_INT_GENTYPE_FUNCS(div)

void eval_selection_int		(ShaderEvalContext& c) { c.color.x()	= (float)selection(c.in[0].z() > 0.0f,	(int)c.in[1].x(),						(int)c.in[2].y()); }
void eval_selection_ivec2	(ShaderEvalContext& c) { c.color.yz()	= selection(c.in[0].z() > 0.0f,			c.in[1].swizzle(1, 0).asInt(),			c.in[2].swizzle(2, 1).asInt()).asFloat(); }
void eval_selection_ivec3	(ShaderEvalContext& c) { c.color.xyz()	= selection(c.in[0].z() > 0.0f,			c.in[1].swizzle(1, 2, 0).asInt(),		c.in[2].swizzle(3, 1, 2).asInt()).asFloat(); }
void eval_selection_ivec4	(ShaderEvalContext& c) { c.color		= selection(c.in[0].z() > 0.0f,			c.in[1].swizzle(3, 2, 1, 0).asInt(),	c.in[2].swizzle(0, 3, 2, 1).asInt()).asFloat(); }

DECLARE_UNARY_BOOL_GENTYPE_FUNCS(boolNot)
DECLARE_BINARY_BOOL_FUNCS(logicalAnd)
DECLARE_BINARY_BOOL_FUNCS(logicalOr)
DECLARE_BINARY_BOOL_FUNCS(logicalXor)

void eval_selection_bool	(ShaderEvalContext& c) { c.color.x()	= (float)selection(c.in[0].z() > 0.0f,	c.in[1].x() > 0.0f,														c.in[2].y() > 0.0f); }
void eval_selection_bvec2	(ShaderEvalContext& c) { c.color.yz()	= selection(c.in[0].z() > 0.0f,			greaterThan(c.in[1].swizzle(1, 0), Vec2(0.0f, 0.0f)),					greaterThan(c.in[2].swizzle(2, 1), Vec2(0.0f, 0.0f))).asFloat(); }
void eval_selection_bvec3	(ShaderEvalContext& c) { c.color.xyz()	= selection(c.in[0].z() > 0.0f,			greaterThan(c.in[1].swizzle(1, 2, 0), Vec3(0.0f, 0.0f, 0.0f)),			greaterThan(c.in[2].swizzle(3, 1, 2), Vec3(0.0f, 0.0f, 0.0f))).asFloat(); }
void eval_selection_bvec4	(ShaderEvalContext& c) { c.color		= selection(c.in[0].z() > 0.0f,			greaterThan(c.in[1].swizzle(3, 2, 1, 0), Vec4(0.0f, 0.0f, 0.0f, 0.0f)),	greaterThan(c.in[2].swizzle(0, 3, 2, 1), Vec4(0.0f, 0.0f, 0.0f, 0.0f))).asFloat(); }

DECLARE_VEC_FLOAT_FUNCS(addVecScalar)
DECLARE_VEC_FLOAT_FUNCS(subVecScalar)
DECLARE_VEC_FLOAT_FUNCS(mulVecScalar)
DECLARE_VEC_FLOAT_FUNCS(divVecScalar)

DECLARE_FLOAT_VEC_FUNCS(addScalarVec)
DECLARE_FLOAT_VEC_FUNCS(subScalarVec)
DECLARE_FLOAT_VEC_FUNCS(mulScalarVec)
DECLARE_FLOAT_VEC_FUNCS(divScalarVec)

DECLARE_IVEC_INT_FUNCS(addVecScalar)
DECLARE_IVEC_INT_FUNCS(subVecScalar)
DECLARE_IVEC_INT_FUNCS(mulVecScalar)
DECLARE_IVEC_INT_FUNCS(divVecScalar)

DECLARE_INT_IVEC_FUNCS(addScalarVec)
DECLARE_INT_IVEC_FUNCS(subScalarVec)
DECLARE_INT_IVEC_FUNCS(mulScalarVec)
DECLARE_INT_IVEC_FUNCS(divScalarVec)

// Built-in functions.

DECLARE_UNARY_GENTYPE_FUNCS(radians)
DECLARE_UNARY_GENTYPE_FUNCS(degrees)
DECLARE_UNARY_GENTYPE_FUNCS(sin)
DECLARE_UNARY_GENTYPE_FUNCS(cos)
DECLARE_UNARY_GENTYPE_FUNCS(tan)
DECLARE_UNARY_GENTYPE_FUNCS(asin)
DECLARE_UNARY_GENTYPE_FUNCS(acos)
DECLARE_UNARY_GENTYPE_FUNCS(atan)
DECLARE_BINARY_GENTYPE_FUNCS(atan2)

DECLARE_BINARY_GENTYPE_FUNCS(pow)
DECLARE_UNARY_GENTYPE_FUNCS(exp)
DECLARE_UNARY_GENTYPE_FUNCS(log)
DECLARE_UNARY_GENTYPE_FUNCS(exp2)
DECLARE_UNARY_GENTYPE_FUNCS(log2)
DECLARE_UNARY_GENTYPE_FUNCS(sqrt)
DECLARE_UNARY_GENTYPE_FUNCS(inverseSqrt)

DECLARE_UNARY_GENTYPE_FUNCS(abs)
DECLARE_UNARY_GENTYPE_FUNCS(sign)
DECLARE_UNARY_GENTYPE_FUNCS(floor)
DECLARE_UNARY_GENTYPE_FUNCS(ceil)
DECLARE_UNARY_GENTYPE_FUNCS(fract)
DECLARE_BINARY_GENTYPE_FUNCS(mod)
DECLARE_VEC_FLOAT_FUNCS(modVecFloat)
DECLARE_BINARY_GENTYPE_FUNCS(min)
DECLARE_VEC_FLOAT_FUNCS(minVecFloat)
DECLARE_BINARY_GENTYPE_FUNCS(max)
DECLARE_VEC_FLOAT_FUNCS(maxVecFloat)
DECLARE_TERNARY_GENTYPE_FUNCS(clamp)
DECLARE_VEC_FLOAT_FLOAT_FUNCS(clampVecFloatFloat)
DECLARE_TERNARY_GENTYPE_FUNCS(mix)
DECLARE_VEC_VEC_FLOAT_FUNCS(mixVecVecFloat)
DECLARE_BINARY_GENTYPE_FUNCS(step)
DECLARE_FLOAT_VEC_FUNCS(stepFloatVec)
DECLARE_TERNARY_GENTYPE_FUNCS(smoothStep)
DECLARE_FLOAT_FLOAT_VEC_FUNCS(smoothStepFloatFloatVec)

DECLARE_UNARY_SCALAR_GENTYPE_FUNCS(length)
DECLARE_BINARY_SCALAR_GENTYPE_FUNCS(distance)
DECLARE_BINARY_SCALAR_GENTYPE_FUNCS(dot)
void eval_cross_vec3 (ShaderEvalContext& c) { c.color.xyz()	= cross(c.in[0].swizzle(2, 0, 1), c.in[1].swizzle(1, 2, 0)); }

DECLARE_UNARY_GENTYPE_FUNCS(normalize)
DECLARE_TERNARY_GENTYPE_FUNCS(faceForward)
DECLARE_BINARY_GENTYPE_FUNCS(reflect)

void eval_refract_float	(ShaderEvalContext& c) { c.color.x()	= refract(c.in[0].z(),                 c.in[1].x(),                 c.in[2].y()); }
void eval_refract_vec2	(ShaderEvalContext& c) { c.color.yz()	= refract(c.in[0].swizzle(3, 1),       c.in[1].swizzle(1, 0),       c.in[2].y()); }
void eval_refract_vec3	(ShaderEvalContext& c) { c.color.xyz()	= refract(c.in[0].swizzle(2, 0, 1),    c.in[1].swizzle(1, 2, 0),    c.in[2].y()); }
void eval_refract_vec4	(ShaderEvalContext& c) { c.color		= refract(c.in[0].swizzle(1, 2, 3, 0), c.in[1].swizzle(3, 2, 1, 0), c.in[2].y()); }

// Compare functions.

#define DECLARE_FLOAT_COMPARE_FUNCS(FUNC_NAME)																											\
	void eval_##FUNC_NAME##_float	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(c.in[0].z(),          c.in[1].x()); }						\
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(c.in[0].swizzle(3, 1),       c.in[1].swizzle(1, 0)); }		\
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(c.in[0].swizzle(2, 0, 1),    c.in[1].swizzle(1, 2, 0)); }	\
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0), c.in[1].swizzle(3, 2, 1, 0)); }

#define DECLARE_FLOAT_CWISE_COMPARE_FUNCS(FUNC_NAME)																											\
	void eval_##FUNC_NAME##_float	(ShaderEvalContext& c) { c.color.x()	= (float)FUNC_NAME(c.in[0].z(),          c.in[1].x()); }							\
	void eval_##FUNC_NAME##_vec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(c.in[0].swizzle(3, 1),       c.in[1].swizzle(1, 0)).asFloat(); }		\
	void eval_##FUNC_NAME##_vec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(c.in[0].swizzle(2, 0, 1),    c.in[1].swizzle(1, 2, 0)).asFloat(); }		\
	void eval_##FUNC_NAME##_vec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(c.in[0].swizzle(1, 2, 3, 0), c.in[1].swizzle(3, 2, 1, 0)).asFloat(); }

#define DECLARE_INT_COMPARE_FUNCS(FUNC_NAME)																																	\
	void eval_##FUNC_NAME##_int		(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(chopToInt(c.in[0].z()), chopToInt(c.in[1].x())); }									\
	void eval_##FUNC_NAME##_ivec2	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(chopToInt(c.in[0].swizzle(3, 1)),       chopToInt(c.in[1].swizzle(1, 0))); }		\
	void eval_##FUNC_NAME##_ivec3	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(chopToInt(c.in[0].swizzle(2, 0, 1)),    chopToInt(c.in[1].swizzle(1, 2, 0))); }		\
	void eval_##FUNC_NAME##_ivec4	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(chopToInt(c.in[0].swizzle(1, 2, 3, 0)), chopToInt(c.in[1].swizzle(3, 2, 1, 0))); }

#define DECLARE_INT_CWISE_COMPARE_FUNCS(FUNC_NAME)																																	\
	void eval_##FUNC_NAME##_int		(ShaderEvalContext& c) { c.color.x()	= (float)FUNC_NAME(chopToInt(c.in[0].z()), chopToInt(c.in[1].x())); }									\
	void eval_##FUNC_NAME##_ivec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(chopToInt(c.in[0].swizzle(3, 1)),       chopToInt(c.in[1].swizzle(1, 0))).asFloat(); }		\
	void eval_##FUNC_NAME##_ivec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(chopToInt(c.in[0].swizzle(2, 0, 1)),    chopToInt(c.in[1].swizzle(1, 2, 0))).asFloat(); }	\
	void eval_##FUNC_NAME##_ivec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(chopToInt(c.in[0].swizzle(1, 2, 3, 0)), chopToInt(c.in[1].swizzle(3, 2, 1, 0))).asFloat(); }

#define DECLARE_BOOL_COMPARE_FUNCS(FUNC_NAME)																																								\
	void eval_##FUNC_NAME##_bool	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(c.in[0].z() > 0.0f, c.in[1].x() > 0.0f); }																		\
	void eval_##FUNC_NAME##_bvec2	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(greaterThan(c.in[0].swizzle(3, 1), Vec2(0.0f)),       greaterThan(c.in[1].swizzle(1, 0), Vec2(0.0f))); }		\
	void eval_##FUNC_NAME##_bvec3	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(greaterThan(c.in[0].swizzle(2, 0, 1), Vec3(0.0f)),    greaterThan(c.in[1].swizzle(1, 2, 0), Vec3(0.0f))); }		\
	void eval_##FUNC_NAME##_bvec4	(ShaderEvalContext& c) { c.color.x() = (float)FUNC_NAME(greaterThan(c.in[0].swizzle(1, 2, 3, 0), Vec4(0.0f)), greaterThan(c.in[1].swizzle(3, 2, 1, 0), Vec4(0.0f))); }

#define DECLARE_BOOL_CWISE_COMPARE_FUNCS(FUNC_NAME)																																								\
	void eval_##FUNC_NAME##_bool	(ShaderEvalContext& c) { c.color.x()	= (float)FUNC_NAME(c.in[0].z() > 0.0f, c.in[1].x() > 0.0f); }																		\
	void eval_##FUNC_NAME##_bvec2	(ShaderEvalContext& c) { c.color.yz()	= FUNC_NAME(greaterThan(c.in[0].swizzle(3, 1), Vec2(0.0f)),       greaterThan(c.in[1].swizzle(1, 0), Vec2(0.0f))).asFloat(); }		\
	void eval_##FUNC_NAME##_bvec3	(ShaderEvalContext& c) { c.color.xyz()	= FUNC_NAME(greaterThan(c.in[0].swizzle(2, 0, 1), Vec3(0.0f)),    greaterThan(c.in[1].swizzle(1, 2, 0), Vec3(0.0f))).asFloat(); }	\
	void eval_##FUNC_NAME##_bvec4	(ShaderEvalContext& c) { c.color		= FUNC_NAME(greaterThan(c.in[0].swizzle(1, 2, 3, 0), Vec4(0.0f)), greaterThan(c.in[1].swizzle(3, 2, 1, 0), Vec4(0.0f))).asFloat(); }

DECLARE_FLOAT_COMPARE_FUNCS(allEqual)
DECLARE_FLOAT_COMPARE_FUNCS(anyNotEqual)
DECLARE_FLOAT_CWISE_COMPARE_FUNCS(lessThan)
DECLARE_FLOAT_CWISE_COMPARE_FUNCS(lessThanEqual)