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      1 /*-------------------------------------------------------------------------
      2  * drawElements Quality Program OpenGL (ES) Module
      3  * -----------------------------------------------
      4  *
      5  * Copyright 2014 The Android Open Source Project
      6  *
      7  * Licensed under the Apache License, Version 2.0 (the "License");
      8  * you may not use this file except in compliance with the License.
      9  * You may obtain a copy of the License at
     10  *
     11  *      http://www.apache.org/licenses/LICENSE-2.0
     12  *
     13  * Unless required by applicable law or agreed to in writing, software
     14  * distributed under the License is distributed on an "AS IS" BASIS,
     15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     16  * See the License for the specific language governing permissions and
     17  * limitations under the License.
     18  *
     19  *//*!
     20  * \file
     21  * \brief Draw tests
     22  *//*--------------------------------------------------------------------*/
     23 
     24 #include "glsDrawTest.hpp"
     25 
     26 #include "deRandom.h"
     27 #include "deRandom.hpp"
     28 #include "deMath.h"
     29 #include "deStringUtil.hpp"
     30 #include "deFloat16.h"
     31 #include "deUniquePtr.hpp"
     32 #include "deArrayUtil.hpp"
     33 
     34 #include "tcuTestLog.hpp"
     35 #include "tcuPixelFormat.hpp"
     36 #include "tcuRGBA.hpp"
     37 #include "tcuSurface.hpp"
     38 #include "tcuVector.hpp"
     39 #include "tcuTestLog.hpp"
     40 #include "tcuRenderTarget.hpp"
     41 #include "tcuStringTemplate.hpp"
     42 #include "tcuImageCompare.hpp"
     43 #include "tcuFloat.hpp"
     44 #include "tcuTextureUtil.hpp"
     45 
     46 #include "gluPixelTransfer.hpp"
     47 #include "gluCallLogWrapper.hpp"
     48 
     49 #include "sglrContext.hpp"
     50 #include "sglrReferenceContext.hpp"
     51 #include "sglrGLContext.hpp"
     52 
     53 #include "rrGenericVector.hpp"
     54 
     55 #include <cstring>
     56 #include <cmath>
     57 #include <vector>
     58 #include <sstream>
     59 #include <limits>
     60 
     61 #include "glwDefs.hpp"
     62 #include "glwEnums.hpp"
     63 
     64 namespace deqp
     65 {
     66 namespace gls
     67 {
     68 namespace
     69 {
     70 
     71 using tcu::TestLog;
     72 using namespace glw; // GL types
     73 
     74 const int MAX_RENDER_TARGET_SIZE = 512;
     75 
     76 // Utils
     77 
     78 static GLenum targetToGL (DrawTestSpec::Target target)
     79 {
     80 	static const GLenum targets[] =
     81 	{
     82 		GL_ELEMENT_ARRAY_BUFFER,	// TARGET_ELEMENT_ARRAY = 0,
     83 		GL_ARRAY_BUFFER				// TARGET_ARRAY,
     84 	};
     85 
     86 	return de::getSizedArrayElement<DrawTestSpec::TARGET_LAST>(targets, (int)target);
     87 }
     88 
     89 static GLenum usageToGL (DrawTestSpec::Usage usage)
     90 {
     91 	static const GLenum usages[] =
     92 	{
     93 		GL_DYNAMIC_DRAW,	// USAGE_DYNAMIC_DRAW = 0,
     94 		GL_STATIC_DRAW,		// USAGE_STATIC_DRAW,
     95 		GL_STREAM_DRAW,		// USAGE_STREAM_DRAW,
     96 
     97 		GL_STREAM_READ,		// USAGE_STREAM_READ,
     98 		GL_STREAM_COPY,		// USAGE_STREAM_COPY,
     99 
    100 		GL_STATIC_READ,		// USAGE_STATIC_READ,
    101 		GL_STATIC_COPY,		// USAGE_STATIC_COPY,
    102 
    103 		GL_DYNAMIC_READ,	// USAGE_DYNAMIC_READ,
    104 		GL_DYNAMIC_COPY		// USAGE_DYNAMIC_COPY,
    105 	};
    106 
    107 	return de::getSizedArrayElement<DrawTestSpec::USAGE_LAST>(usages, (int)usage);
    108 }
    109 
    110 static GLenum inputTypeToGL (DrawTestSpec::InputType type)
    111 {
    112 	static const GLenum types[] =
    113 	{
    114 		GL_FLOAT,				// INPUTTYPE_FLOAT = 0,
    115 		GL_FIXED,				// INPUTTYPE_FIXED,
    116 		GL_DOUBLE,				// INPUTTYPE_DOUBLE
    117 		GL_BYTE,				// INPUTTYPE_BYTE,
    118 		GL_SHORT,				// INPUTTYPE_SHORT,
    119 		GL_UNSIGNED_BYTE,		// INPUTTYPE_UNSIGNED_BYTE,
    120 		GL_UNSIGNED_SHORT,		// INPUTTYPE_UNSIGNED_SHORT,
    121 
    122 		GL_INT,					// INPUTTYPE_INT,
    123 		GL_UNSIGNED_INT,		// INPUTTYPE_UNSIGNED_INT,
    124 		GL_HALF_FLOAT,			// INPUTTYPE_HALF,
    125 		GL_UNSIGNED_INT_2_10_10_10_REV, // INPUTTYPE_UNSIGNED_INT_2_10_10_10,
    126 		GL_INT_2_10_10_10_REV			// INPUTTYPE_INT_2_10_10_10,
    127 	};
    128 
    129 	return de::getSizedArrayElement<DrawTestSpec::INPUTTYPE_LAST>(types, (int)type);
    130 }
    131 
    132 static std::string outputTypeToGLType (DrawTestSpec::OutputType type)
    133 {
    134 	static const char* types[] =
    135 	{
    136 		"float",		// OUTPUTTYPE_FLOAT = 0,
    137 		"vec2",			// OUTPUTTYPE_VEC2,
    138 		"vec3",			// OUTPUTTYPE_VEC3,
    139 		"vec4",			// OUTPUTTYPE_VEC4,
    140 
    141 		"int",			// OUTPUTTYPE_INT,
    142 		"uint",			// OUTPUTTYPE_UINT,
    143 
    144 		"ivec2",		// OUTPUTTYPE_IVEC2,
    145 		"ivec3",		// OUTPUTTYPE_IVEC3,
    146 		"ivec4",		// OUTPUTTYPE_IVEC4,
    147 
    148 		"uvec2",		// OUTPUTTYPE_UVEC2,
    149 		"uvec3",		// OUTPUTTYPE_UVEC3,
    150 		"uvec4",		// OUTPUTTYPE_UVEC4,
    151 	};
    152 
    153 	return de::getSizedArrayElement<DrawTestSpec::OUTPUTTYPE_LAST>(types, (int)type);
    154 }
    155 
    156 static GLenum primitiveToGL (DrawTestSpec::Primitive primitive)
    157 {
    158 	static const GLenum primitives[] =
    159 	{
    160 		GL_POINTS,						// PRIMITIVE_POINTS = 0,
    161 		GL_TRIANGLES,					// PRIMITIVE_TRIANGLES,
    162 		GL_TRIANGLE_FAN,				// PRIMITIVE_TRIANGLE_FAN,
    163 		GL_TRIANGLE_STRIP,				// PRIMITIVE_TRIANGLE_STRIP,
    164 		GL_LINES,						// PRIMITIVE_LINES
    165 		GL_LINE_STRIP,					// PRIMITIVE_LINE_STRIP
    166 		GL_LINE_LOOP,					// PRIMITIVE_LINE_LOOP
    167 		GL_LINES_ADJACENCY,				// PRIMITIVE_LINES_ADJACENCY
    168 		GL_LINE_STRIP_ADJACENCY,		// PRIMITIVE_LINE_STRIP_ADJACENCY
    169 		GL_TRIANGLES_ADJACENCY,			// PRIMITIVE_TRIANGLES_ADJACENCY
    170 		GL_TRIANGLE_STRIP_ADJACENCY,	// PRIMITIVE_TRIANGLE_STRIP_ADJACENCY
    171 	};
    172 
    173 	return de::getSizedArrayElement<DrawTestSpec::PRIMITIVE_LAST>(primitives, (int)primitive);
    174 }
    175 
    176 static deUint32 indexTypeToGL (DrawTestSpec::IndexType indexType)
    177 {
    178 	static const GLenum indexTypes[] =
    179 	{
    180 		GL_UNSIGNED_BYTE,	// INDEXTYPE_BYTE = 0,
    181 		GL_UNSIGNED_SHORT,	// INDEXTYPE_SHORT,
    182 		GL_UNSIGNED_INT,	// INDEXTYPE_INT,
    183 	};
    184 
    185 	return de::getSizedArrayElement<DrawTestSpec::INDEXTYPE_LAST>(indexTypes, (int)indexType);
    186 }
    187 
    188 static bool inputTypeIsFloatType (DrawTestSpec::InputType type)
    189 {
    190 	if (type == DrawTestSpec::INPUTTYPE_FLOAT)
    191 		return true;
    192 	if (type == DrawTestSpec::INPUTTYPE_FIXED)
    193 		return true;
    194 	if (type == DrawTestSpec::INPUTTYPE_HALF)
    195 		return true;
    196 	if (type == DrawTestSpec::INPUTTYPE_DOUBLE)
    197 		return true;
    198 	return false;
    199 }
    200 
    201 static bool outputTypeIsFloatType (DrawTestSpec::OutputType type)
    202 {
    203 	if (type == DrawTestSpec::OUTPUTTYPE_FLOAT
    204 		|| type == DrawTestSpec::OUTPUTTYPE_VEC2
    205 		|| type == DrawTestSpec::OUTPUTTYPE_VEC3
    206 		|| type == DrawTestSpec::OUTPUTTYPE_VEC4)
    207 		return true;
    208 
    209 	return false;
    210 }
    211 
    212 static bool outputTypeIsIntType (DrawTestSpec::OutputType type)
    213 {
    214 	if (type == DrawTestSpec::OUTPUTTYPE_INT
    215 		|| type == DrawTestSpec::OUTPUTTYPE_IVEC2
    216 		|| type == DrawTestSpec::OUTPUTTYPE_IVEC3
    217 		|| type == DrawTestSpec::OUTPUTTYPE_IVEC4)
    218 		return true;
    219 
    220 	return false;
    221 }
    222 
    223 static bool outputTypeIsUintType (DrawTestSpec::OutputType type)
    224 {
    225 	if (type == DrawTestSpec::OUTPUTTYPE_UINT
    226 		|| type == DrawTestSpec::OUTPUTTYPE_UVEC2
    227 		|| type == DrawTestSpec::OUTPUTTYPE_UVEC3
    228 		|| type == DrawTestSpec::OUTPUTTYPE_UVEC4)
    229 		return true;
    230 
    231 	return false;
    232 }
    233 
    234 static size_t getElementCount (DrawTestSpec::Primitive primitive, size_t primitiveCount)
    235 {
    236 	switch (primitive)
    237 	{
    238 		case DrawTestSpec::PRIMITIVE_POINTS:						return primitiveCount;
    239 		case DrawTestSpec::PRIMITIVE_TRIANGLES:						return primitiveCount * 3;
    240 		case DrawTestSpec::PRIMITIVE_TRIANGLE_FAN:					return primitiveCount + 2;
    241 		case DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP:				return primitiveCount + 2;
    242 		case DrawTestSpec::PRIMITIVE_LINES:							return primitiveCount * 2;
    243 		case DrawTestSpec::PRIMITIVE_LINE_STRIP:					return primitiveCount + 1;
    244 		case DrawTestSpec::PRIMITIVE_LINE_LOOP:						return (primitiveCount==1) ? (2) : (primitiveCount);
    245 		case DrawTestSpec::PRIMITIVE_LINES_ADJACENCY:				return primitiveCount * 4;
    246 		case DrawTestSpec::PRIMITIVE_LINE_STRIP_ADJACENCY:			return primitiveCount + 3;
    247 		case DrawTestSpec::PRIMITIVE_TRIANGLES_ADJACENCY:			return primitiveCount * 6;
    248 		case DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP_ADJACENCY:		return primitiveCount * 2 + 4;
    249 		default:
    250 			DE_ASSERT(false);
    251 			return 0;
    252 	}
    253 }
    254 
    255 struct MethodInfo
    256 {
    257 	bool indexed;
    258 	bool instanced;
    259 	bool ranged;
    260 	bool first;
    261 	bool baseVertex;
    262 	bool indirect;
    263 };
    264 
    265 static MethodInfo getMethodInfo (gls::DrawTestSpec::DrawMethod method)
    266 {
    267 	static const MethodInfo infos[] =
    268 	{
    269 		//	indexed		instanced	ranged		first		baseVertex	indirect
    270 		{	false,		false,		false,		true,		false,		false	}, //!< DRAWMETHOD_DRAWARRAYS,
    271 		{	false,		true,		false,		true,		false,		false	}, //!< DRAWMETHOD_DRAWARRAYS_INSTANCED,
    272 		{	false,		true,		false,		true,		false,		true	}, //!< DRAWMETHOD_DRAWARRAYS_INDIRECT,
    273 		{	true,		false,		false,		false,		false,		false	}, //!< DRAWMETHOD_DRAWELEMENTS,
    274 		{	true,		false,		true,		false,		false,		false	}, //!< DRAWMETHOD_DRAWELEMENTS_RANGED,
    275 		{	true,		true,		false,		false,		false,		false	}, //!< DRAWMETHOD_DRAWELEMENTS_INSTANCED,
    276 		{	true,		true,		false,		false,		true,		true	}, //!< DRAWMETHOD_DRAWELEMENTS_INDIRECT,
    277 		{	true,		false,		false,		false,		true,		false	}, //!< DRAWMETHOD_DRAWELEMENTS_BASEVERTEX,
    278 		{	true,		true,		false,		false,		true,		false	}, //!< DRAWMETHOD_DRAWELEMENTS_INSTANCED_BASEVERTEX,
    279 		{	true,		false,		true,		false,		true,		false	}, //!< DRAWMETHOD_DRAWELEMENTS_RANGED_BASEVERTEX,
    280 	};
    281 
    282 	return de::getSizedArrayElement<DrawTestSpec::DRAWMETHOD_LAST>(infos, (int)method);
    283 }
    284 
    285 template<class T>
    286 inline static void alignmentSafeAssignment (char* dst, T val)
    287 {
    288 	std::memcpy(dst, &val, sizeof(T));
    289 }
    290 
    291 static bool checkSpecsShaderCompatible (const DrawTestSpec& a, const DrawTestSpec& b)
    292 {
    293 	// Only the attributes matter
    294 	if (a.attribs.size() != b.attribs.size())
    295 		return false;
    296 
    297 	for (size_t ndx = 0; ndx < a.attribs.size(); ++ndx)
    298 	{
    299 		// Only the output type (== shader input type) matters and the usage in the shader.
    300 
    301 		if (a.attribs[ndx].additionalPositionAttribute != b.attribs[ndx].additionalPositionAttribute)
    302 			return false;
    303 
    304 		// component counts need not to match
    305 		if (outputTypeIsFloatType(a.attribs[ndx].outputType) && outputTypeIsFloatType(b.attribs[ndx].outputType))
    306 			continue;
    307 		if (outputTypeIsIntType(a.attribs[ndx].outputType) && outputTypeIsIntType(b.attribs[ndx].outputType))
    308 			continue;
    309 		if (outputTypeIsUintType(a.attribs[ndx].outputType) && outputTypeIsUintType(b.attribs[ndx].outputType))
    310 			continue;
    311 
    312 		return false;
    313 	}
    314 
    315 	return true;
    316 }
    317 
    318 // generate random vectors in a way that does not depend on argument evaluation order
    319 
    320 tcu::Vec4 generateRandomVec4 (de::Random& random)
    321 {
    322 	tcu::Vec4 retVal;
    323 
    324 	for (int i = 0; i < 4; ++i)
    325 		retVal[i] = random.getFloat();
    326 
    327 	return retVal;
    328 }
    329 
    330 tcu::IVec4 generateRandomIVec4 (de::Random& random)
    331 {
    332 	tcu::IVec4 retVal;
    333 
    334 	for (int i = 0; i < 4; ++i)
    335 		retVal[i] = random.getUint32();
    336 
    337 	return retVal;
    338 }
    339 
    340 tcu::UVec4 generateRandomUVec4 (de::Random& random)
    341 {
    342 	tcu::UVec4 retVal;
    343 
    344 	for (int i = 0; i < 4; ++i)
    345 		retVal[i] = random.getUint32();
    346 
    347 	return retVal;
    348 }
    349 
    350 // IterationLogSectionEmitter
    351 
    352 class IterationLogSectionEmitter
    353 {
    354 public:
    355 								IterationLogSectionEmitter		(tcu::TestLog& log, size_t testIteration, size_t testIterations, const std::string& description, bool enabled);
    356 								~IterationLogSectionEmitter		(void);
    357 private:
    358 								IterationLogSectionEmitter		(const IterationLogSectionEmitter&); // delete
    359 	IterationLogSectionEmitter&	operator=						(const IterationLogSectionEmitter&); // delete
    360 
    361 	tcu::TestLog&				m_log;
    362 	bool						m_enabled;
    363 };
    364 
    365 IterationLogSectionEmitter::IterationLogSectionEmitter (tcu::TestLog& log, size_t testIteration, size_t testIterations, const std::string& description, bool enabled)
    366 	: m_log		(log)
    367 	, m_enabled	(enabled)
    368 {
    369 	if (m_enabled)
    370 	{
    371 		std::ostringstream buf;
    372 		buf << "Iteration " << (testIteration+1) << "/" << testIterations;
    373 
    374 		if (!description.empty())
    375 			buf << " - " << description;
    376 
    377 		m_log << tcu::TestLog::Section(buf.str(), buf.str());
    378 	}
    379 }
    380 
    381 IterationLogSectionEmitter::~IterationLogSectionEmitter (void)
    382 {
    383 	if (m_enabled)
    384 		m_log << tcu::TestLog::EndSection;
    385 }
    386 
    387 // GLValue
    388 
    389 class GLValue
    390 {
    391 public:
    392 
    393 	template<class Type>
    394 	class WrappedType
    395 	{
    396 	public:
    397 		static WrappedType<Type>	create			(Type value)							{ WrappedType<Type> v; v.m_value = value; return v; }
    398 		inline Type					getValue		(void) const							{ return m_value; }
    399 
    400 		inline WrappedType<Type>	operator+		(const WrappedType<Type>& other) const	{ return WrappedType<Type>::create((Type)(m_value + other.getValue())); }
    401 		inline WrappedType<Type>	operator*		(const WrappedType<Type>& other) const	{ return WrappedType<Type>::create((Type)(m_value * other.getValue())); }
    402 		inline WrappedType<Type>	operator/		(const WrappedType<Type>& other) const	{ return WrappedType<Type>::create((Type)(m_value / other.getValue())); }
    403 		inline WrappedType<Type>	operator-		(const WrappedType<Type>& other) const	{ return WrappedType<Type>::create((Type)(m_value - other.getValue())); }
    404 
    405 		inline WrappedType<Type>&	operator+=		(const WrappedType<Type>& other)		{ m_value += other.getValue(); return *this; }
    406 		inline WrappedType<Type>&	operator*=		(const WrappedType<Type>& other)		{ m_value *= other.getValue(); return *this; }
    407 		inline WrappedType<Type>&	operator/=		(const WrappedType<Type>& other)		{ m_value /= other.getValue(); return *this; }
    408 		inline WrappedType<Type>&	operator-=		(const WrappedType<Type>& other)		{ m_value -= other.getValue(); return *this; }
    409 
    410 		inline bool					operator==		(const WrappedType<Type>& other) const	{ return m_value == other.m_value; }
    411 		inline bool					operator!=		(const WrappedType<Type>& other) const	{ return m_value != other.m_value; }
    412 		inline bool					operator<		(const WrappedType<Type>& other) const	{ return m_value < other.m_value; }
    413 		inline bool					operator>		(const WrappedType<Type>& other) const	{ return m_value > other.m_value; }
    414 		inline bool					operator<=		(const WrappedType<Type>& other) const	{ return m_value <= other.m_value; }
    415 		inline bool					operator>=		(const WrappedType<Type>& other) const	{ return m_value >= other.m_value; }
    416 
    417 		inline						operator Type	(void) const							{ return m_value; }
    418 		template<class T>
    419 		inline T					to				(void) const							{ return (T)m_value; }
    420 	private:
    421 		Type	m_value;
    422 	};
    423 
    424 	typedef WrappedType<deInt16>	Short;
    425 	typedef WrappedType<deUint16>	Ushort;
    426 
    427 	typedef WrappedType<deInt8>		Byte;
    428 	typedef WrappedType<deUint8>	Ubyte;
    429 
    430 	typedef WrappedType<float>		Float;
    431 	typedef WrappedType<double>		Double;
    432 
    433 	typedef WrappedType<deInt32>	Int;
    434 	typedef WrappedType<deUint32>	Uint;
    435 
    436 	class Half
    437 	{
    438 	public:
    439 		static Half			create			(float value)				{ Half h; h.m_value = floatToHalf(value); return h; }
    440 		inline deFloat16	getValue		(void) const				{ return m_value; }
    441 
    442 		inline Half			operator+		(const Half& other) const	{ return create(halfToFloat(m_value) + halfToFloat(other.getValue())); }
    443 		inline Half			operator*		(const Half& other) const	{ return create(halfToFloat(m_value) * halfToFloat(other.getValue())); }
    444 		inline Half			operator/		(const Half& other) const	{ return create(halfToFloat(m_value) / halfToFloat(other.getValue())); }
    445 		inline Half			operator-		(const Half& other) const	{ return create(halfToFloat(m_value) - halfToFloat(other.getValue())); }
    446 
    447 		inline Half&		operator+=		(const Half& other)			{ m_value = floatToHalf(halfToFloat(other.getValue()) + halfToFloat(m_value)); return *this; }
    448 		inline Half&		operator*=		(const Half& other)			{ m_value = floatToHalf(halfToFloat(other.getValue()) * halfToFloat(m_value)); return *this; }
    449 		inline Half&		operator/=		(const Half& other)			{ m_value = floatToHalf(halfToFloat(other.getValue()) / halfToFloat(m_value)); return *this; }
    450 		inline Half&		operator-=		(const Half& other)			{ m_value = floatToHalf(halfToFloat(other.getValue()) - halfToFloat(m_value)); return *this; }
    451 
    452 		inline bool			operator==		(const Half& other) const	{ return m_value == other.m_value; }
    453 		inline bool			operator!=		(const Half& other) const	{ return m_value != other.m_value; }
    454 		inline bool			operator<		(const Half& other) const	{ return halfToFloat(m_value) < halfToFloat(other.m_value); }
    455 		inline bool			operator>		(const Half& other) const	{ return halfToFloat(m_value) > halfToFloat(other.m_value); }
    456 		inline bool			operator<=		(const Half& other) const	{ return halfToFloat(m_value) <= halfToFloat(other.m_value); }
    457 		inline bool			operator>=		(const Half& other) const	{ return halfToFloat(m_value) >= halfToFloat(other.m_value); }
    458 
    459 		template<class T>
    460 		inline T			to				(void) const				{ return (T)halfToFloat(m_value); }
    461 
    462 		inline static deFloat16	floatToHalf		(float f);
    463 		inline static float		halfToFloat		(deFloat16 h);
    464 	private:
    465 		deFloat16 m_value;
    466 	};
    467 
    468 	class Fixed
    469 	{
    470 	public:
    471 		static Fixed		create			(deInt32 value)				{ Fixed v; v.m_value = value; return v; }
    472 		inline deInt32		getValue		(void) const				{ return m_value; }
    473 
    474 		inline Fixed		operator+		(const Fixed& other) const	{ return create(m_value + other.getValue()); }
    475 		inline Fixed		operator*		(const Fixed& other) const	{ return create(m_value * other.getValue()); }
    476 		inline Fixed		operator/		(const Fixed& other) const	{ return create(m_value / other.getValue()); }
    477 		inline Fixed		operator-		(const Fixed& other) const	{ return create(m_value - other.getValue()); }
    478 
    479 		inline Fixed&		operator+=		(const Fixed& other)		{ m_value += other.getValue(); return *this; }
    480 		inline Fixed&		operator*=		(const Fixed& other)		{ m_value *= other.getValue(); return *this; }
    481 		inline Fixed&		operator/=		(const Fixed& other)		{ m_value /= other.getValue(); return *this; }
    482 		inline Fixed&		operator-=		(const Fixed& other)		{ m_value -= other.getValue(); return *this; }
    483 
    484 		inline bool			operator==		(const Fixed& other) const	{ return m_value == other.m_value; }
    485 		inline bool			operator!=		(const Fixed& other) const	{ return m_value != other.m_value; }
    486 		inline bool			operator<		(const Fixed& other) const	{ return m_value < other.m_value; }
    487 		inline bool			operator>		(const Fixed& other) const	{ return m_value > other.m_value; }
    488 		inline bool			operator<=		(const Fixed& other) const	{ return m_value <= other.m_value; }
    489 		inline bool			operator>=		(const Fixed& other) const	{ return m_value >= other.m_value; }
    490 
    491 		inline				operator deInt32 (void) const				{ return m_value; }
    492 		template<class T>
    493 		inline T			to				(void) const				{ return (T)m_value; }
    494 	private:
    495 		deInt32				m_value;
    496 	};
    497 
    498 	// \todo [mika] This is pretty messy
    499 						GLValue			(void)			: type(DrawTestSpec::INPUTTYPE_LAST) {}
    500 	explicit			GLValue			(Float value)	: type(DrawTestSpec::INPUTTYPE_FLOAT),				fl(value)	{}
    501 	explicit			GLValue			(Fixed value)	: type(DrawTestSpec::INPUTTYPE_FIXED),				fi(value)	{}
    502 	explicit			GLValue			(Byte value)	: type(DrawTestSpec::INPUTTYPE_BYTE),				b(value)	{}
    503 	explicit			GLValue			(Ubyte value)	: type(DrawTestSpec::INPUTTYPE_UNSIGNED_BYTE),		ub(value)	{}
    504 	explicit			GLValue			(Short value)	: type(DrawTestSpec::INPUTTYPE_SHORT),				s(value)	{}
    505 	explicit			GLValue			(Ushort value)	: type(DrawTestSpec::INPUTTYPE_UNSIGNED_SHORT),		us(value)	{}
    506 	explicit			GLValue			(Int value)		: type(DrawTestSpec::INPUTTYPE_INT),				i(value)	{}
    507 	explicit			GLValue			(Uint value)	: type(DrawTestSpec::INPUTTYPE_UNSIGNED_INT),		ui(value)	{}
    508 	explicit			GLValue			(Half value)	: type(DrawTestSpec::INPUTTYPE_HALF),				h(value)	{}
    509 	explicit			GLValue			(Double value)	: type(DrawTestSpec::INPUTTYPE_DOUBLE),				d(value)	{}
    510 
    511 	float				toFloat			(void) const;
    512 
    513 	static GLValue		getMaxValue		(DrawTestSpec::InputType type);
    514 	static GLValue		getMinValue		(DrawTestSpec::InputType type);
    515 
    516 	DrawTestSpec::InputType	type;
    517 
    518 	union
    519 	{
    520 		Float		fl;
    521 		Fixed		fi;
    522 		Double		d;
    523 		Byte		b;
    524 		Ubyte		ub;
    525 		Short		s;
    526 		Ushort		us;
    527 		Int			i;
    528 		Uint		ui;
    529 		Half		h;
    530 	};
    531 };
    532 
    533 inline deFloat16 GLValue::Half::floatToHalf (float f)
    534 {
    535 	// No denorm support.
    536 	tcu::Float<deUint16, 5, 10, 15, tcu::FLOAT_HAS_SIGN> v(f);
    537 	DE_ASSERT(!v.isNaN() && !v.isInf());
    538 	return v.bits();
    539 }
    540 
    541 inline float GLValue::Half::halfToFloat (deFloat16 h)
    542 {
    543 	return tcu::Float16((deUint16)h).asFloat();
    544 }
    545 
    546 float GLValue::toFloat (void) const
    547 {
    548 	switch (type)
    549 	{
    550 		case DrawTestSpec::INPUTTYPE_FLOAT:
    551 			return fl.getValue();
    552 			break;
    553 
    554 		case DrawTestSpec::INPUTTYPE_BYTE:
    555 			return b.getValue();
    556 			break;
    557 
    558 		case DrawTestSpec::INPUTTYPE_UNSIGNED_BYTE:
    559 			return ub.getValue();
    560 			break;
    561 
    562 		case DrawTestSpec::INPUTTYPE_SHORT:
    563 			return s.getValue();
    564 			break;
    565 
    566 		case DrawTestSpec::INPUTTYPE_UNSIGNED_SHORT:
    567 			return us.getValue();
    568 			break;
    569 
    570 		case DrawTestSpec::INPUTTYPE_FIXED:
    571 		{
    572 			int maxValue = 65536;
    573 			return (float)(double(2 * fi.getValue() + 1) / (maxValue - 1));
    574 
    575 			break;
    576 		}
    577 
    578 		case DrawTestSpec::INPUTTYPE_UNSIGNED_INT:
    579 			return (float)ui.getValue();
    580 			break;
    581 
    582 		case DrawTestSpec::INPUTTYPE_INT:
    583 			return (float)i.getValue();
    584 			break;
    585 
    586 		case DrawTestSpec::INPUTTYPE_HALF:
    587 			return h.to<float>();
    588 			break;
    589 
    590 		case DrawTestSpec::INPUTTYPE_DOUBLE:
    591 			return d.to<float>();
    592 			break;
    593 
    594 		default:
    595 			DE_ASSERT(false);
    596 			return 0.0f;
    597 			break;
    598 	};
    599 }
    600 
    601 GLValue GLValue::getMaxValue (DrawTestSpec::InputType type)
    602 {
    603 	GLValue rangesHi[(int)DrawTestSpec::INPUTTYPE_LAST];
    604 
    605 	rangesHi[(int)DrawTestSpec::INPUTTYPE_FLOAT]			= GLValue(Float::create(127.0f));
    606 	rangesHi[(int)DrawTestSpec::INPUTTYPE_DOUBLE]			= GLValue(Double::create(127.0f));
    607 	rangesHi[(int)DrawTestSpec::INPUTTYPE_BYTE]				= GLValue(Byte::create(127));
    608 	rangesHi[(int)DrawTestSpec::INPUTTYPE_UNSIGNED_BYTE]	= GLValue(Ubyte::create(255));
    609 	rangesHi[(int)DrawTestSpec::INPUTTYPE_UNSIGNED_SHORT]	= GLValue(Ushort::create(65530));
    610 	rangesHi[(int)DrawTestSpec::INPUTTYPE_SHORT]			= GLValue(Short::create(32760));
    611 	rangesHi[(int)DrawTestSpec::INPUTTYPE_FIXED]			= GLValue(Fixed::create(32760));
    612 	rangesHi[(int)DrawTestSpec::INPUTTYPE_INT]				= GLValue(Int::create(2147483647));
    613 	rangesHi[(int)DrawTestSpec::INPUTTYPE_UNSIGNED_INT]		= GLValue(Uint::create(4294967295u));
    614 	rangesHi[(int)DrawTestSpec::INPUTTYPE_HALF]				= GLValue(Half::create(256.0f));
    615 
    616 	return rangesHi[(int)type];
    617 }
    618 
    619 GLValue GLValue::getMinValue (DrawTestSpec::InputType type)
    620 {
    621 	GLValue rangesLo[(int)DrawTestSpec::INPUTTYPE_LAST];
    622 
    623 	rangesLo[(int)DrawTestSpec::INPUTTYPE_FLOAT]			= GLValue(Float::create(-127.0f));
    624 	rangesLo[(int)DrawTestSpec::INPUTTYPE_DOUBLE]			= GLValue(Double::create(-127.0f));
    625 	rangesLo[(int)DrawTestSpec::INPUTTYPE_BYTE]				= GLValue(Byte::create(-127));
    626 	rangesLo[(int)DrawTestSpec::INPUTTYPE_UNSIGNED_BYTE]	= GLValue(Ubyte::create(0));
    627 	rangesLo[(int)DrawTestSpec::INPUTTYPE_UNSIGNED_SHORT]	= GLValue(Ushort::create(0));
    628 	rangesLo[(int)DrawTestSpec::INPUTTYPE_SHORT]			= GLValue(Short::create(-32760));
    629 	rangesLo[(int)DrawTestSpec::INPUTTYPE_FIXED]			= GLValue(Fixed::create(-32760));
    630 	rangesLo[(int)DrawTestSpec::INPUTTYPE_INT]				= GLValue(Int::create(-2147483647));
    631 	rangesLo[(int)DrawTestSpec::INPUTTYPE_UNSIGNED_INT]		= GLValue(Uint::create(0));
    632 	rangesLo[(int)DrawTestSpec::INPUTTYPE_HALF]				= GLValue(Half::create(-256.0f));
    633 
    634 	return rangesLo[(int)type];
    635 }
    636 
    637 template<typename T>
    638 struct GLValueTypeTraits;
    639 
    640 template<> struct GLValueTypeTraits<GLValue::Float>	 { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_FLOAT;			};
    641 template<> struct GLValueTypeTraits<GLValue::Double> { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_DOUBLE;			};
    642 template<> struct GLValueTypeTraits<GLValue::Byte>	 { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_BYTE;			};
    643 template<> struct GLValueTypeTraits<GLValue::Ubyte>	 { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_UNSIGNED_BYTE;	};
    644 template<> struct GLValueTypeTraits<GLValue::Ushort> { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_UNSIGNED_SHORT;	};
    645 template<> struct GLValueTypeTraits<GLValue::Short>	 { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_SHORT;			};
    646 template<> struct GLValueTypeTraits<GLValue::Fixed>	 { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_FIXED;			};
    647 template<> struct GLValueTypeTraits<GLValue::Int>	 { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_INT;			};
    648 template<> struct GLValueTypeTraits<GLValue::Uint>	 { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_UNSIGNED_INT;	};
    649 template<> struct GLValueTypeTraits<GLValue::Half>	 { static const DrawTestSpec::InputType Type = DrawTestSpec::INPUTTYPE_HALF;			};
    650 
    651 template<typename T>
    652 inline T extractGLValue (const GLValue& v);
    653 
    654 template<> GLValue::Float	inline extractGLValue<GLValue::Float>		(const GLValue& v) { return v.fl; };
    655 template<> GLValue::Double	inline extractGLValue<GLValue::Double>		(const GLValue& v) { return v.d; };
    656 template<> GLValue::Byte	inline extractGLValue<GLValue::Byte>		(const GLValue& v) { return v.b; };
    657 template<> GLValue::Ubyte	inline extractGLValue<GLValue::Ubyte>		(const GLValue& v) { return v.ub; };
    658 template<> GLValue::Ushort	inline extractGLValue<GLValue::Ushort>		(const GLValue& v) { return v.us; };
    659 template<> GLValue::Short	inline extractGLValue<GLValue::Short>		(const GLValue& v) { return v.s; };
    660 template<> GLValue::Fixed	inline extractGLValue<GLValue::Fixed>		(const GLValue& v) { return v.fi; };
    661 template<> GLValue::Int		inline extractGLValue<GLValue::Int>			(const GLValue& v) { return v.i; };
    662 template<> GLValue::Uint	inline extractGLValue<GLValue::Uint>		(const GLValue& v) { return v.ui; };
    663 template<> GLValue::Half	inline extractGLValue<GLValue::Half>		(const GLValue& v) { return v.h; };
    664 
    665 template<class T>
    666 inline T getRandom (deRandom& rnd, T min, T max);
    667 
    668 template<>
    669 inline GLValue::Float getRandom (deRandom& rnd, GLValue::Float min, GLValue::Float max)
    670 {
    671 	if (max < min)
    672 		return min;
    673 
    674 	return GLValue::Float::create(min + deRandom_getFloat(&rnd) * (max.to<float>() - min.to<float>()));
    675 }
    676 
    677 template<>
    678 inline GLValue::Double getRandom (deRandom& rnd, GLValue::Double min, GLValue::Double max)
    679 {
    680 	if (max < min)
    681 		return min;
    682 
    683 	return GLValue::Double::create(min + deRandom_getFloat(&rnd) * (max.to<float>() - min.to<float>()));
    684 }
    685 
    686 template<>
    687 inline GLValue::Short getRandom (deRandom& rnd, GLValue::Short min, GLValue::Short max)
    688 {
    689 	if (max < min)
    690 		return min;
    691 
    692 	return GLValue::Short::create((min == max ? min : (deInt16)(min + (deRandom_getUint32(&rnd) % (max.to<int>() - min.to<int>())))));
    693 }
    694 
    695 template<>
    696 inline GLValue::Ushort getRandom (deRandom& rnd, GLValue::Ushort min, GLValue::Ushort max)
    697 {
    698 	if (max < min)
    699 		return min;
    700 
    701 	return GLValue::Ushort::create((min == max ? min : (deUint16)(min + (deRandom_getUint32(&rnd) % (max.to<int>() - min.to<int>())))));
    702 }
    703 
    704 template<>
    705 inline GLValue::Byte getRandom (deRandom& rnd, GLValue::Byte min, GLValue::Byte max)
    706 {
    707 	if (max < min)
    708 		return min;
    709 
    710 	return GLValue::Byte::create((min == max ? min : (deInt8)(min + (deRandom_getUint32(&rnd) % (max.to<int>() - min.to<int>())))));
    711 }
    712 
    713 template<>
    714 inline GLValue::Ubyte getRandom (deRandom& rnd, GLValue::Ubyte min, GLValue::Ubyte max)
    715 {
    716 	if (max < min)
    717 		return min;
    718 
    719 	return GLValue::Ubyte::create((min == max ? min : (deUint8)(min + (deRandom_getUint32(&rnd) % (max.to<int>() - min.to<int>())))));
    720 }
    721 
    722 template<>
    723 inline GLValue::Fixed getRandom (deRandom& rnd, GLValue::Fixed min, GLValue::Fixed max)
    724 {
    725 	if (max < min)
    726 		return min;
    727 
    728 	return GLValue::Fixed::create((min == max ? min : min + (deRandom_getUint32(&rnd) % (max.to<deUint32>() - min.to<deUint32>()))));
    729 }
    730 
    731 template<>
    732 inline GLValue::Half getRandom (deRandom& rnd, GLValue::Half min, GLValue::Half max)
    733 {
    734 	if (max < min)
    735 		return min;
    736 
    737 	float fMax = max.to<float>();
    738 	float fMin = min.to<float>();
    739 	GLValue::Half h = GLValue::Half::create(fMin + deRandom_getFloat(&rnd) * (fMax - fMin));
    740 	return h;
    741 }
    742 
    743 template<>
    744 inline GLValue::Int getRandom (deRandom& rnd, GLValue::Int min, GLValue::Int max)
    745 {
    746 	if (max < min)
    747 		return min;
    748 
    749 	return GLValue::Int::create((min == max ? min : min + (deRandom_getUint32(&rnd) % (max.to<deUint32>() - min.to<deUint32>()))));
    750 }
    751 
    752 template<>
    753 inline GLValue::Uint getRandom (deRandom& rnd, GLValue::Uint min, GLValue::Uint max)
    754 {
    755 	if (max < min)
    756 		return min;
    757 
    758 	return GLValue::Uint::create((min == max ? min : min + (deRandom_getUint32(&rnd) % (max.to<deUint32>() - min.to<deUint32>()))));
    759 }
    760 
    761 // Minimum difference required between coordinates
    762 template<class T>
    763 inline T minValue (void);
    764 
    765 template<>
    766 inline GLValue::Float minValue (void)
    767 {
    768 	return GLValue::Float::create(4 * 1.0f);
    769 }
    770 
    771 template<>
    772 inline GLValue::Double minValue (void)
    773 {
    774 	return GLValue::Double::create(4 * 1.0f);
    775 }
    776 
    777 template<>
    778 inline GLValue::Short minValue (void)
    779 {
    780 	return GLValue::Short::create(4 * 256);
    781 }
    782 
    783 template<>
    784 inline GLValue::Ushort minValue (void)
    785 {
    786 	return GLValue::Ushort::create(4 * 256);
    787 }
    788 
    789 template<>
    790 inline GLValue::Byte minValue (void)
    791 {
    792 	return GLValue::Byte::create(4 * 1);
    793 }
    794 
    795 template<>
    796 inline GLValue::Ubyte minValue (void)
    797 {
    798 	return GLValue::Ubyte::create(4 * 2);
    799 }
    800 
    801 template<>
    802 inline GLValue::Fixed minValue (void)
    803 {
    804 	return GLValue::Fixed::create(4 * 1);
    805 }
    806 
    807 template<>
    808 inline GLValue::Int minValue (void)
    809 {
    810 	return GLValue::Int::create(4 * 16777216);
    811 }
    812 
    813 template<>
    814 inline GLValue::Uint minValue (void)
    815 {
    816 	return GLValue::Uint::create(4 * 16777216);
    817 }
    818 
    819 template<>
    820 inline GLValue::Half minValue (void)
    821 {
    822 	return GLValue::Half::create(4 * 1.0f);
    823 }
    824 
    825 template<class T>
    826 inline T abs (T val);
    827 
    828 template<>
    829 inline GLValue::Fixed abs (GLValue::Fixed val)
    830 {
    831 	return GLValue::Fixed::create(0x7FFFu & val.getValue());
    832 }
    833 
    834 template<>
    835 inline GLValue::Ubyte abs (GLValue::Ubyte val)
    836 {
    837 	return val;
    838 }
    839 
    840 template<>
    841 inline GLValue::Byte abs (GLValue::Byte val)
    842 {
    843 	return GLValue::Byte::create(0x7Fu & val.getValue());
    844 }
    845 
    846 template<>
    847 inline GLValue::Ushort abs (GLValue::Ushort val)
    848 {
    849 	return val;
    850 }
    851 
    852 template<>
    853 inline GLValue::Short abs (GLValue::Short val)
    854 {
    855 	return GLValue::Short::create(0x7FFFu & val.getValue());
    856 }
    857 
    858 template<>
    859 inline GLValue::Float abs (GLValue::Float val)
    860 {
    861 	return GLValue::Float::create(std::fabs(val.to<float>()));
    862 }
    863 
    864 template<>
    865 inline GLValue::Double abs (GLValue::Double val)
    866 {
    867 	return GLValue::Double::create(std::fabs(val.to<float>()));
    868 }
    869 
    870 template<>
    871 inline GLValue::Uint abs (GLValue::Uint val)
    872 {
    873 	return val;
    874 }
    875 
    876 template<>
    877 inline GLValue::Int abs (GLValue::Int val)
    878 {
    879 	return GLValue::Int::create(0x7FFFFFFFu & val.getValue());
    880 }
    881 
    882 template<>
    883 inline GLValue::Half abs (GLValue::Half val)
    884 {
    885 	return GLValue::Half::create(std::fabs(val.to<float>()));
    886 }
    887 
    888 // AttributeArray
    889 
    890 class AttributeArray
    891 {
    892 public:
    893 								AttributeArray		(DrawTestSpec::Storage storage, sglr::Context& context);
    894 								~AttributeArray		(void);
    895 
    896 	void						data				(DrawTestSpec::Target target, size_t size, const char* data, DrawTestSpec::Usage usage);
    897 	void						setupArray			(bool bound, int offset, int size, DrawTestSpec::InputType inType, DrawTestSpec::OutputType outType, bool normalized, int stride, int instanceDivisor, const rr::GenericVec4& defaultAttrib, bool isPositionAttr, bool bgraComponentOrder);
    898 	void						bindAttribute		(deUint32 loc);
    899 	void						bindIndexArray		(DrawTestSpec::Target storage);
    900 
    901 	int							getComponentCount	(void) const { return m_componentCount; }
    902 	DrawTestSpec::Target		getTarget			(void) const { return m_target; }
    903 	DrawTestSpec::InputType		getInputType		(void) const { return m_inputType; }
    904 	DrawTestSpec::OutputType	getOutputType		(void) const { return m_outputType; }
    905 	DrawTestSpec::Storage		getStorageType		(void) const { return m_storage; }
    906 	bool						getNormalized		(void) const { return m_normalize; }
    907 	int							getStride			(void) const { return m_stride; }
    908 	bool						isBound				(void) const { return m_bound; }
    909 	bool						isPositionAttribute	(void) const { return m_isPositionAttr; }
    910 
    911 private:
    912 	DrawTestSpec::Storage		m_storage;
    913 	sglr::Context&				m_ctx;
    914 	deUint32					m_glBuffer;
    915 
    916 	int							m_size;
    917 	char*						m_data;
    918 	int							m_componentCount;
    919 	bool						m_bound;
    920 	DrawTestSpec::Target		m_target;
    921 	DrawTestSpec::InputType		m_inputType;
    922 	DrawTestSpec::OutputType	m_outputType;
    923 	bool						m_normalize;
    924 	int							m_stride;
    925 	int							m_offset;
    926 	rr::GenericVec4				m_defaultAttrib;
    927 	int							m_instanceDivisor;
    928 	bool						m_isPositionAttr;
    929 	bool						m_bgraOrder;
    930 };
    931 
    932 AttributeArray::AttributeArray (DrawTestSpec::Storage storage, sglr::Context& context)
    933 	: m_storage			(storage)
    934 	, m_ctx				(context)
    935 	, m_glBuffer		(0)
    936 	, m_size			(0)
    937 	, m_data			(DE_NULL)
    938 	, m_componentCount	(1)
    939 	, m_bound			(false)
    940 	, m_target			(DrawTestSpec::TARGET_ARRAY)
    941 	, m_inputType		(DrawTestSpec::INPUTTYPE_FLOAT)
    942 	, m_outputType		(DrawTestSpec::OUTPUTTYPE_VEC4)
    943 	, m_normalize		(false)
    944 	, m_stride			(0)
    945 	, m_offset			(0)
    946 	, m_instanceDivisor	(0)
    947 	, m_isPositionAttr	(false)
    948 	, m_bgraOrder		(false)
    949 {
    950 	if (m_storage == DrawTestSpec::STORAGE_BUFFER)
    951 	{
    952 		m_ctx.genBuffers(1, &m_glBuffer);
    953 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glGenBuffers()");
    954 	}
    955 }
    956 
    957 AttributeArray::~AttributeArray	(void)
    958 {
    959 	if (m_storage == DrawTestSpec::STORAGE_BUFFER)
    960 	{
    961 		m_ctx.deleteBuffers(1, &m_glBuffer);
    962 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDeleteBuffers()");
    963 	}
    964 	else if (m_storage == DrawTestSpec::STORAGE_USER)
    965 		delete[] m_data;
    966 	else
    967 		DE_ASSERT(false);
    968 }
    969 
    970 void AttributeArray::data (DrawTestSpec::Target target, size_t size, const char* ptr, DrawTestSpec::Usage usage)
    971 {
    972 	m_size = (int)size;
    973 	m_target = target;
    974 
    975 	if (m_storage == DrawTestSpec::STORAGE_BUFFER)
    976 	{
    977 		m_ctx.bindBuffer(targetToGL(target), m_glBuffer);
    978 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glBindBuffer()");
    979 
    980 		m_ctx.bufferData(targetToGL(target), size, ptr, usageToGL(usage));
    981 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glBufferData()");
    982 	}
    983 	else if (m_storage == DrawTestSpec::STORAGE_USER)
    984 	{
    985 		if (m_data)
    986 			delete[] m_data;
    987 
    988 		m_data = new char[size];
    989 		std::memcpy(m_data, ptr, size);
    990 	}
    991 	else
    992 		DE_ASSERT(false);
    993 }
    994 
    995 void AttributeArray::setupArray (bool bound, int offset, int size, DrawTestSpec::InputType inputType, DrawTestSpec::OutputType outType, bool normalized, int stride, int instanceDivisor, const rr::GenericVec4& defaultAttrib, bool isPositionAttr, bool bgraComponentOrder)
    996 {
    997 	m_componentCount	= size;
    998 	m_bound				= bound;
    999 	m_inputType			= inputType;
   1000 	m_outputType		= outType;
   1001 	m_normalize			= normalized;
   1002 	m_stride			= stride;
   1003 	m_offset			= offset;
   1004 	m_defaultAttrib		= defaultAttrib;
   1005 	m_instanceDivisor	= instanceDivisor;
   1006 	m_isPositionAttr	= isPositionAttr;
   1007 	m_bgraOrder			= bgraComponentOrder;
   1008 }
   1009 
   1010 void AttributeArray::bindAttribute (deUint32 loc)
   1011 {
   1012 	if (!isBound())
   1013 	{
   1014 		switch (m_inputType)
   1015 		{
   1016 			case DrawTestSpec::INPUTTYPE_FLOAT:
   1017 			{
   1018 				tcu::Vec4 attr = m_defaultAttrib.get<float>();
   1019 
   1020 				switch (m_componentCount)
   1021 				{
   1022 					case 1: m_ctx.vertexAttrib1f(loc, attr.x()); break;
   1023 					case 2: m_ctx.vertexAttrib2f(loc, attr.x(), attr.y()); break;
   1024 					case 3: m_ctx.vertexAttrib3f(loc, attr.x(), attr.y(), attr.z()); break;
   1025 					case 4: m_ctx.vertexAttrib4f(loc, attr.x(), attr.y(), attr.z(), attr.w()); break;
   1026 					default: DE_ASSERT(DE_FALSE); break;
   1027 				}
   1028 				break;
   1029 			}
   1030 			case DrawTestSpec::INPUTTYPE_INT:
   1031 			{
   1032 				tcu::IVec4 attr = m_defaultAttrib.get<deInt32>();
   1033 				m_ctx.vertexAttribI4i(loc, attr.x(), attr.y(), attr.z(), attr.w());
   1034 				break;
   1035 			}
   1036 			case DrawTestSpec::INPUTTYPE_UNSIGNED_INT:
   1037 			{
   1038 				tcu::UVec4 attr = m_defaultAttrib.get<deUint32>();
   1039 				m_ctx.vertexAttribI4ui(loc, attr.x(), attr.y(), attr.z(), attr.w());
   1040 				break;
   1041 			}
   1042 			default:
   1043 				DE_ASSERT(DE_FALSE);
   1044 				break;
   1045 		}
   1046 	}
   1047 	else
   1048 	{
   1049 		const deUint8* basePtr = DE_NULL;
   1050 
   1051 		if (m_storage == DrawTestSpec::STORAGE_BUFFER)
   1052 		{
   1053 			m_ctx.bindBuffer(targetToGL(m_target), m_glBuffer);
   1054 			GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glBindBuffer()");
   1055 
   1056 			basePtr = DE_NULL;
   1057 		}
   1058 		else if (m_storage == DrawTestSpec::STORAGE_USER)
   1059 		{
   1060 			m_ctx.bindBuffer(targetToGL(m_target), 0);
   1061 			GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glBindBuffer()");
   1062 
   1063 			basePtr = (const deUint8*)m_data;
   1064 		}
   1065 		else
   1066 			DE_ASSERT(DE_FALSE);
   1067 
   1068 		if (!inputTypeIsFloatType(m_inputType))
   1069 		{
   1070 			// Input is not float type
   1071 
   1072 			if (outputTypeIsFloatType(m_outputType))
   1073 			{
   1074 				const int size = (m_bgraOrder) ? (GL_BGRA) : (m_componentCount);
   1075 
   1076 				DE_ASSERT(!(m_bgraOrder && m_componentCount != 4));
   1077 
   1078 				// Output type is float type
   1079 				m_ctx.vertexAttribPointer(loc, size, inputTypeToGL(m_inputType), m_normalize, m_stride, basePtr + m_offset);
   1080 				GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glVertexAttribPointer()");
   1081 			}
   1082 			else
   1083 			{
   1084 				// Output type is int type
   1085 				m_ctx.vertexAttribIPointer(loc, m_componentCount, inputTypeToGL(m_inputType), m_stride, basePtr + m_offset);
   1086 				GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glVertexAttribIPointer()");
   1087 			}
   1088 		}
   1089 		else
   1090 		{
   1091 			// Input type is float type
   1092 
   1093 			// Output type must be float type
   1094 			DE_ASSERT(outputTypeIsFloatType(m_outputType));
   1095 
   1096 			m_ctx.vertexAttribPointer(loc, m_componentCount, inputTypeToGL(m_inputType), m_normalize, m_stride, basePtr + m_offset);
   1097 			GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glVertexAttribPointer()");
   1098 		}
   1099 
   1100 		if (m_instanceDivisor)
   1101 			m_ctx.vertexAttribDivisor(loc, m_instanceDivisor);
   1102 	}
   1103 }
   1104 
   1105 void AttributeArray::bindIndexArray (DrawTestSpec::Target target)
   1106 {
   1107 	if (m_storage == DrawTestSpec::STORAGE_USER)
   1108 	{
   1109 	}
   1110 	else if (m_storage == DrawTestSpec::STORAGE_BUFFER)
   1111 	{
   1112 		m_ctx.bindBuffer(targetToGL(target), m_glBuffer);
   1113 	}
   1114 }
   1115 
   1116 // DrawTestShaderProgram
   1117 
   1118 class DrawTestShaderProgram : public sglr::ShaderProgram
   1119 {
   1120 public:
   1121 												DrawTestShaderProgram		(const glu::RenderContext& ctx, const std::vector<AttributeArray*>& arrays);
   1122 
   1123 	void										shadeVertices				(const rr::VertexAttrib* inputs, rr::VertexPacket* const* packets, const int numPackets) const;
   1124 	void										shadeFragments				(rr::FragmentPacket* packets, const int numPackets, const rr::FragmentShadingContext& context) const;
   1125 
   1126 private:
   1127 	static std::string							genVertexSource				(const glu::RenderContext& ctx, const std::vector<AttributeArray*>& arrays);
   1128 	static std::string							genFragmentSource			(const glu::RenderContext& ctx);
   1129 	static void									generateShaderParams		(std::map<std::string, std::string>& params, glu::ContextType type);
   1130 	static rr::GenericVecType					mapOutputType				(const DrawTestSpec::OutputType& type);
   1131 	static int									getComponentCount			(const DrawTestSpec::OutputType& type);
   1132 
   1133 	static sglr::pdec::ShaderProgramDeclaration createProgramDeclaration	(const glu::RenderContext& ctx, const std::vector<AttributeArray*>& arrays);
   1134 
   1135 	std::vector<int>							m_componentCount;
   1136 	std::vector<bool>							m_isCoord;
   1137 	std::vector<rr::GenericVecType>				m_attrType;
   1138 };
   1139 
   1140 DrawTestShaderProgram::DrawTestShaderProgram (const glu::RenderContext& ctx, const std::vector<AttributeArray*>& arrays)
   1141 	: sglr::ShaderProgram	(createProgramDeclaration(ctx, arrays))
   1142 	, m_componentCount		(arrays.size())
   1143 	, m_isCoord				(arrays.size())
   1144 	, m_attrType			(arrays.size())
   1145 {
   1146 	for (int arrayNdx = 0; arrayNdx < (int)arrays.size(); arrayNdx++)
   1147 	{
   1148 		m_componentCount[arrayNdx]	= getComponentCount(arrays[arrayNdx]->getOutputType());
   1149 		m_isCoord[arrayNdx]			= arrays[arrayNdx]->isPositionAttribute();
   1150 		m_attrType[arrayNdx]		= mapOutputType(arrays[arrayNdx]->getOutputType());
   1151 	}
   1152 }
   1153 
   1154 template <typename T>
   1155 void calcShaderColorCoord (tcu::Vec2& coord, tcu::Vec3& color, const tcu::Vector<T, 4>& attribValue, bool isCoordinate, int numComponents)
   1156 {
   1157 	if (isCoordinate)
   1158 		switch (numComponents)
   1159 		{
   1160 			case 1:	coord += tcu::Vec2((float)attribValue.x(),							(float)attribValue.x());							break;
   1161 			case 2:	coord += tcu::Vec2((float)attribValue.x(),							(float)attribValue.y());							break;
   1162 			case 3:	coord += tcu::Vec2((float)attribValue.x() + (float)attribValue.z(),	(float)attribValue.y());							break;
   1163 			case 4:	coord += tcu::Vec2((float)attribValue.x() + (float)attribValue.z(),	(float)attribValue.y() + (float)attribValue.w());	break;
   1164 
   1165 			default:
   1166 				DE_ASSERT(false);
   1167 		}
   1168 	else
   1169 	{
   1170 		switch (numComponents)
   1171 		{
   1172 			case 1:
   1173 				color = color * (float)attribValue.x();
   1174 				break;
   1175 
   1176 			case 2:
   1177 				color.x() = color.x() * (float)attribValue.x();
   1178 				color.y() = color.y() * (float)attribValue.y();
   1179 				break;
   1180 
   1181 			case 3:
   1182 				color.x() = color.x() * (float)attribValue.x();
   1183 				color.y() = color.y() * (float)attribValue.y();
   1184 				color.z() = color.z() * (float)attribValue.z();
   1185 				break;
   1186 
   1187 			case 4:
   1188 				color.x() = color.x() * (float)attribValue.x() * (float)attribValue.w();
   1189 				color.y() = color.y() * (float)attribValue.y() * (float)attribValue.w();
   1190 				color.z() = color.z() * (float)attribValue.z() * (float)attribValue.w();
   1191 				break;
   1192 
   1193 			default:
   1194 				DE_ASSERT(false);
   1195 		}
   1196 	}
   1197 }
   1198 
   1199 void DrawTestShaderProgram::shadeVertices (const rr::VertexAttrib* inputs, rr::VertexPacket* const* packets, const int numPackets) const
   1200 {
   1201 	const float	u_coordScale = getUniformByName("u_coordScale").value.f;
   1202 	const float u_colorScale = getUniformByName("u_colorScale").value.f;
   1203 
   1204 	for (int packetNdx = 0; packetNdx < numPackets; ++packetNdx)
   1205 	{
   1206 		const size_t varyingLocColor = 0;
   1207 
   1208 		rr::VertexPacket& packet = *packets[packetNdx];
   1209 
   1210 		// Calc output color
   1211 		tcu::Vec2 coord = tcu::Vec2(0.0, 0.0);
   1212 		tcu::Vec3 color = tcu::Vec3(1.0, 1.0, 1.0);
   1213 
   1214 		for (int attribNdx = 0; attribNdx < (int)m_attrType.size(); attribNdx++)
   1215 		{
   1216 			const int	numComponents	= m_componentCount[attribNdx];
   1217 			const bool	isCoord			= m_isCoord[attribNdx];
   1218 
   1219 			switch (m_attrType[attribNdx])
   1220 			{
   1221 				case rr::GENERICVECTYPE_FLOAT:	calcShaderColorCoord(coord, color, rr::readVertexAttribFloat(inputs[attribNdx], packet.instanceNdx, packet.vertexNdx), isCoord, numComponents);	break;
   1222 				case rr::GENERICVECTYPE_INT32:	calcShaderColorCoord(coord, color, rr::readVertexAttribInt	(inputs[attribNdx], packet.instanceNdx, packet.vertexNdx), isCoord, numComponents);	break;
   1223 				case rr::GENERICVECTYPE_UINT32:	calcShaderColorCoord(coord, color, rr::readVertexAttribUint	(inputs[attribNdx], packet.instanceNdx, packet.vertexNdx), isCoord, numComponents);	break;
   1224 				default:
   1225 					DE_ASSERT(false);
   1226 			}
   1227 		}
   1228 
   1229 		// Transform position
   1230 		{
   1231 			packet.position = tcu::Vec4(u_coordScale * coord.x(), u_coordScale * coord.y(), 1.0f, 1.0f);
   1232 			packet.pointSize = 1.0f;
   1233 		}
   1234 
   1235 		// Pass color to FS
   1236 		{
   1237 			packet.outputs[varyingLocColor] = tcu::Vec4(u_colorScale * color.x(), u_colorScale * color.y(), u_colorScale * color.z(), 1.0f) * 0.5f + tcu::Vec4(0.5f, 0.5f, 0.5f, 0.5f);
   1238 		}
   1239 	}
   1240 }
   1241 
   1242 void DrawTestShaderProgram::shadeFragments (rr::FragmentPacket* packets, const int numPackets, const rr::FragmentShadingContext& context) const
   1243 {
   1244 	const size_t varyingLocColor = 0;
   1245 
   1246 	for (int packetNdx = 0; packetNdx < numPackets; ++packetNdx)
   1247 	{
   1248 		rr::FragmentPacket& packet = packets[packetNdx];
   1249 
   1250 		for (int fragNdx = 0; fragNdx < 4; ++fragNdx)
   1251 			rr::writeFragmentOutput(context, packetNdx, fragNdx, 0, rr::readVarying<float>(packet, context, varyingLocColor, fragNdx));
   1252 	}
   1253 }
   1254 
   1255 std::string DrawTestShaderProgram::genVertexSource (const glu::RenderContext& ctx, const std::vector<AttributeArray*>& arrays)
   1256 {
   1257 	std::map<std::string, std::string>	params;
   1258 	std::stringstream					vertexShaderTmpl;
   1259 
   1260 	generateShaderParams(params, ctx.getType());
   1261 
   1262 	vertexShaderTmpl << "${VTX_HDR}";
   1263 
   1264 	for (int arrayNdx = 0; arrayNdx < (int)arrays.size(); arrayNdx++)
   1265 	{
   1266 		vertexShaderTmpl
   1267 			<< "${VTX_IN} highp " << outputTypeToGLType(arrays[arrayNdx]->getOutputType()) << " a_" << arrayNdx << ";\n";
   1268 	}
   1269 
   1270 	vertexShaderTmpl <<
   1271 		"uniform highp float u_coordScale;\n"
   1272 		"uniform highp float u_colorScale;\n"
   1273 		"${VTX_OUT} ${COL_PRECISION} vec4 v_color;\n"
   1274 		"void main(void)\n"
   1275 		"{\n"
   1276 		"\tgl_PointSize = 1.0;\n"
   1277 		"\thighp vec2 coord = vec2(0.0, 0.0);\n"
   1278 		"\thighp vec3 color = vec3(1.0, 1.0, 1.0);\n";
   1279 
   1280 	for (int arrayNdx = 0; arrayNdx < (int)arrays.size(); arrayNdx++)
   1281 	{
   1282 		const bool isPositionAttr = arrays[arrayNdx]->isPositionAttribute();
   1283 
   1284 		if (isPositionAttr)
   1285 		{
   1286 			switch (arrays[arrayNdx]->getOutputType())
   1287 			{
   1288 				case (DrawTestSpec::OUTPUTTYPE_FLOAT):
   1289 				case (DrawTestSpec::OUTPUTTYPE_INT):
   1290 				case (DrawTestSpec::OUTPUTTYPE_UINT):
   1291 					vertexShaderTmpl <<
   1292 						"\tcoord += vec2(float(a_" << arrayNdx << "), float(a_" << arrayNdx << "));\n";
   1293 					break;
   1294 
   1295 				case (DrawTestSpec::OUTPUTTYPE_VEC2):
   1296 				case (DrawTestSpec::OUTPUTTYPE_IVEC2):
   1297 				case (DrawTestSpec::OUTPUTTYPE_UVEC2):
   1298 					vertexShaderTmpl <<
   1299 						"\tcoord += vec2(a_" << arrayNdx << ".xy);\n";
   1300 					break;
   1301 
   1302 				case (DrawTestSpec::OUTPUTTYPE_VEC3):
   1303 				case (DrawTestSpec::OUTPUTTYPE_IVEC3):
   1304 				case (DrawTestSpec::OUTPUTTYPE_UVEC3):
   1305 					vertexShaderTmpl <<
   1306 						"\tcoord += vec2(a_" << arrayNdx << ".xy);\n"
   1307 						"\tcoord.x += float(a_" << arrayNdx << ".z);\n";
   1308 					break;
   1309 
   1310 				case (DrawTestSpec::OUTPUTTYPE_VEC4):
   1311 				case (DrawTestSpec::OUTPUTTYPE_IVEC4):
   1312 				case (DrawTestSpec::OUTPUTTYPE_UVEC4):
   1313 					vertexShaderTmpl <<
   1314 						"\tcoord += vec2(a_" << arrayNdx << ".xy);\n"
   1315 						"\tcoord += vec2(a_" << arrayNdx << ".zw);\n";
   1316 					break;
   1317 
   1318 				default:
   1319 					DE_ASSERT(false);
   1320 					break;
   1321 			}
   1322 		}
   1323 		else
   1324 		{
   1325 			switch (arrays[arrayNdx]->getOutputType())
   1326 			{
   1327 				case (DrawTestSpec::OUTPUTTYPE_FLOAT):
   1328 				case (DrawTestSpec::OUTPUTTYPE_INT):
   1329 				case (DrawTestSpec::OUTPUTTYPE_UINT):
   1330 					vertexShaderTmpl <<
   1331 						"\tcolor = color * float(a_" << arrayNdx << ");\n";
   1332 					break;
   1333 
   1334 				case (DrawTestSpec::OUTPUTTYPE_VEC2):
   1335 				case (DrawTestSpec::OUTPUTTYPE_IVEC2):
   1336 				case (DrawTestSpec::OUTPUTTYPE_UVEC2):
   1337 					vertexShaderTmpl <<
   1338 						"\tcolor.rg = color.rg * vec2(a_" << arrayNdx << ".xy);\n";
   1339 					break;
   1340 
   1341 				case (DrawTestSpec::OUTPUTTYPE_VEC3):
   1342 				case (DrawTestSpec::OUTPUTTYPE_IVEC3):
   1343 				case (DrawTestSpec::OUTPUTTYPE_UVEC3):
   1344 					vertexShaderTmpl <<
   1345 						"\tcolor = color.rgb * vec3(a_" << arrayNdx << ".xyz);\n";
   1346 					break;
   1347 
   1348 				case (DrawTestSpec::OUTPUTTYPE_VEC4):
   1349 				case (DrawTestSpec::OUTPUTTYPE_IVEC4):
   1350 				case (DrawTestSpec::OUTPUTTYPE_UVEC4):
   1351 					vertexShaderTmpl <<
   1352 						"\tcolor = color.rgb * vec3(a_" << arrayNdx << ".xyz) * float(a_" << arrayNdx << ".w);\n";
   1353 					break;
   1354 
   1355 				default:
   1356 					DE_ASSERT(false);
   1357 					break;
   1358 			}
   1359 		}
   1360 	}
   1361 
   1362 	vertexShaderTmpl <<
   1363 		"\tv_color = vec4(u_colorScale * color, 1.0) * 0.5 + vec4(0.5, 0.5, 0.5, 0.5);\n"
   1364 		"\tgl_Position = vec4(u_coordScale * coord, 1.0, 1.0);\n"
   1365 		"}\n";
   1366 
   1367 	return tcu::StringTemplate(vertexShaderTmpl.str().c_str()).specialize(params);
   1368 }
   1369 
   1370 std::string DrawTestShaderProgram::genFragmentSource (const glu::RenderContext& ctx)
   1371 {
   1372 	std::map<std::string, std::string> params;
   1373 
   1374 	generateShaderParams(params, ctx.getType());
   1375 
   1376 	static const char* fragmentShaderTmpl =
   1377 		"${FRAG_HDR}"
   1378 		"${FRAG_IN} ${COL_PRECISION} vec4 v_color;\n"
   1379 		"void main(void)\n"
   1380 		"{\n"
   1381 		"\t${FRAG_COLOR} = v_color;\n"
   1382 		"}\n";
   1383 
   1384 	return tcu::StringTemplate(fragmentShaderTmpl).specialize(params);
   1385 }
   1386 
   1387 void DrawTestShaderProgram::generateShaderParams (std::map<std::string, std::string>& params, glu::ContextType type)
   1388 {
   1389 	if (glu::isGLSLVersionSupported(type, glu::GLSL_VERSION_300_ES))
   1390 	{
   1391 		params["VTX_IN"]		= "in";
   1392 		params["VTX_OUT"]		= "out";
   1393 		params["FRAG_IN"]		= "in";
   1394 		params["FRAG_COLOR"]	= "dEQP_FragColor";
   1395 		params["VTX_HDR"]		= "#version 300 es\n";
   1396 		params["FRAG_HDR"]		= "#version 300 es\nlayout(location = 0) out mediump vec4 dEQP_FragColor;\n";
   1397 		params["COL_PRECISION"]	= "mediump";
   1398 	}
   1399 	else if (glu::isGLSLVersionSupported(type, glu::GLSL_VERSION_100_ES))
   1400 	{
   1401 		params["VTX_IN"]		= "attribute";
   1402 		params["VTX_OUT"]		= "varying";
   1403 		params["FRAG_IN"]		= "varying";
   1404 		params["FRAG_COLOR"]	= "gl_FragColor";
   1405 		params["VTX_HDR"]		= "";
   1406 		params["FRAG_HDR"]		= "";
   1407 		params["COL_PRECISION"]	= "mediump";
   1408 	}
   1409 	else if (glu::isGLSLVersionSupported(type, glu::GLSL_VERSION_430))
   1410 	{
   1411 		params["VTX_IN"]		= "in";
   1412 		params["VTX_OUT"]		= "out";
   1413 		params["FRAG_IN"]		= "in";
   1414 		params["FRAG_COLOR"]	= "dEQP_FragColor";
   1415 		params["VTX_HDR"]		= "#version 430\n";
   1416 		params["FRAG_HDR"]		= "#version 430\nlayout(location = 0) out highp vec4 dEQP_FragColor;\n";
   1417 		params["COL_PRECISION"]	= "highp";
   1418 	}
   1419 	else if (glu::isGLSLVersionSupported(type, glu::GLSL_VERSION_330))
   1420 	{
   1421 		params["VTX_IN"]		= "in";
   1422 		params["VTX_OUT"]		= "out";
   1423 		params["FRAG_IN"]		= "in";
   1424 		params["FRAG_COLOR"]	= "dEQP_FragColor";
   1425 		params["VTX_HDR"]		= "#version 330\n";
   1426 		params["FRAG_HDR"]		= "#version 330\nlayout(location = 0) out mediump vec4 dEQP_FragColor;\n";
   1427 		params["COL_PRECISION"]	= "mediump";
   1428 	}
   1429 	else
   1430 		DE_ASSERT(DE_FALSE);
   1431 }
   1432 
   1433 rr::GenericVecType DrawTestShaderProgram::mapOutputType (const DrawTestSpec::OutputType& type)
   1434 {
   1435 	switch (type)
   1436 	{
   1437 		case (DrawTestSpec::OUTPUTTYPE_FLOAT):
   1438 		case (DrawTestSpec::OUTPUTTYPE_VEC2):
   1439 		case (DrawTestSpec::OUTPUTTYPE_VEC3):
   1440 		case (DrawTestSpec::OUTPUTTYPE_VEC4):
   1441 			return rr::GENERICVECTYPE_FLOAT;
   1442 
   1443 		case (DrawTestSpec::OUTPUTTYPE_INT):
   1444 		case (DrawTestSpec::OUTPUTTYPE_IVEC2):
   1445 		case (DrawTestSpec::OUTPUTTYPE_IVEC3):
   1446 		case (DrawTestSpec::OUTPUTTYPE_IVEC4):
   1447 			return rr::GENERICVECTYPE_INT32;
   1448 
   1449 		case (DrawTestSpec::OUTPUTTYPE_UINT):
   1450 		case (DrawTestSpec::OUTPUTTYPE_UVEC2):
   1451 		case (DrawTestSpec::OUTPUTTYPE_UVEC3):
   1452 		case (DrawTestSpec::OUTPUTTYPE_UVEC4):
   1453 			return rr::GENERICVECTYPE_UINT32;
   1454 
   1455 		default:
   1456 			DE_ASSERT(false);
   1457 			return rr::GENERICVECTYPE_LAST;
   1458 	}
   1459 }
   1460 
   1461 int DrawTestShaderProgram::getComponentCount (const DrawTestSpec::OutputType& type)
   1462 {
   1463 	switch (type)
   1464 	{
   1465 		case (DrawTestSpec::OUTPUTTYPE_FLOAT):
   1466 		case (DrawTestSpec::OUTPUTTYPE_INT):
   1467 		case (DrawTestSpec::OUTPUTTYPE_UINT):
   1468 			return 1;
   1469 
   1470 		case (DrawTestSpec::OUTPUTTYPE_VEC2):
   1471 		case (DrawTestSpec::OUTPUTTYPE_IVEC2):
   1472 		case (DrawTestSpec::OUTPUTTYPE_UVEC2):
   1473 			return 2;
   1474 
   1475 		case (DrawTestSpec::OUTPUTTYPE_VEC3):
   1476 		case (DrawTestSpec::OUTPUTTYPE_IVEC3):
   1477 		case (DrawTestSpec::OUTPUTTYPE_UVEC3):
   1478 			return 3;
   1479 
   1480 		case (DrawTestSpec::OUTPUTTYPE_VEC4):
   1481 		case (DrawTestSpec::OUTPUTTYPE_IVEC4):
   1482 		case (DrawTestSpec::OUTPUTTYPE_UVEC4):
   1483 			return 4;
   1484 
   1485 		default:
   1486 			DE_ASSERT(false);
   1487 			return 0;
   1488 	}
   1489 }
   1490 
   1491 sglr::pdec::ShaderProgramDeclaration DrawTestShaderProgram::createProgramDeclaration (const glu::RenderContext& ctx, const std::vector<AttributeArray*>& arrays)
   1492 {
   1493 	sglr::pdec::ShaderProgramDeclaration decl;
   1494 
   1495 	for (int arrayNdx = 0; arrayNdx < (int)arrays.size(); arrayNdx++)
   1496 		decl << sglr::pdec::VertexAttribute(std::string("a_") + de::toString(arrayNdx), mapOutputType(arrays[arrayNdx]->getOutputType()));
   1497 
   1498 	decl << sglr::pdec::VertexToFragmentVarying(rr::GENERICVECTYPE_FLOAT);
   1499 	decl << sglr::pdec::FragmentOutput(rr::GENERICVECTYPE_FLOAT);
   1500 
   1501 	decl << sglr::pdec::VertexSource(genVertexSource(ctx, arrays));
   1502 	decl << sglr::pdec::FragmentSource(genFragmentSource(ctx));
   1503 
   1504 	decl << sglr::pdec::Uniform("u_coordScale", glu::TYPE_FLOAT);
   1505 	decl << sglr::pdec::Uniform("u_colorScale", glu::TYPE_FLOAT);
   1506 
   1507 	return decl;
   1508 }
   1509 
   1510 class RandomArrayGenerator
   1511 {
   1512 public:
   1513 	static char*			generateArray			(int seed, int elementCount, int componentCount, int offset, int stride, DrawTestSpec::InputType type);
   1514 	static char*			generateIndices			(int seed, int elementCount, DrawTestSpec::IndexType type, int offset, int min, int max, int indexBase);
   1515 	static rr::GenericVec4	generateAttributeValue	(int seed, DrawTestSpec::InputType type);
   1516 
   1517 private:
   1518 	template<typename T>
   1519 	static char*			createIndices			(int seed, int elementCount, int offset, int min, int max, int indexBase);
   1520 
   1521 	static char*			generateBasicArray		(int seed, int elementCount, int componentCount, int offset, int stride, DrawTestSpec::InputType type);
   1522 	template<typename T, typename GLType>
   1523 	static char*			createBasicArray		(int seed, int elementCount, int componentCount, int offset, int stride);
   1524 	static char*			generatePackedArray		(int seed, int elementCount, int componentCount, int offset, int stride);
   1525 };
   1526 
   1527 char* RandomArrayGenerator::generateArray (int seed, int elementCount, int componentCount, int offset, int stride, DrawTestSpec::InputType type)
   1528 {
   1529 	if (type == DrawTestSpec::INPUTTYPE_INT_2_10_10_10 || type == DrawTestSpec::INPUTTYPE_UNSIGNED_INT_2_10_10_10)
   1530 		return generatePackedArray(seed, elementCount, componentCount, offset, stride);
   1531 	else
   1532 		return generateBasicArray(seed, elementCount, componentCount, offset, stride, type);
   1533 }
   1534 
   1535 char* RandomArrayGenerator::generateBasicArray (int seed, int elementCount, int componentCount, int offset, int stride, DrawTestSpec::InputType type)
   1536 {
   1537 	switch (type)
   1538 	{
   1539 		case DrawTestSpec::INPUTTYPE_FLOAT:				return createBasicArray<float,		GLValue::Float>	(seed, elementCount, componentCount, offset, stride);
   1540 		case DrawTestSpec::INPUTTYPE_DOUBLE:			return createBasicArray<double,		GLValue::Double>(seed, elementCount, componentCount, offset, stride);
   1541 		case DrawTestSpec::INPUTTYPE_SHORT:				return createBasicArray<deInt16,	GLValue::Short>	(seed, elementCount, componentCount, offset, stride);
   1542 		case DrawTestSpec::INPUTTYPE_UNSIGNED_SHORT:	return createBasicArray<deUint16,	GLValue::Ushort>(seed, elementCount, componentCount, offset, stride);
   1543 		case DrawTestSpec::INPUTTYPE_BYTE:				return createBasicArray<deInt8,		GLValue::Byte>	(seed, elementCount, componentCount, offset, stride);
   1544 		case DrawTestSpec::INPUTTYPE_UNSIGNED_BYTE:		return createBasicArray<deUint8,	GLValue::Ubyte>	(seed, elementCount, componentCount, offset, stride);
   1545 		case DrawTestSpec::INPUTTYPE_FIXED:				return createBasicArray<deInt32,	GLValue::Fixed>	(seed, elementCount, componentCount, offset, stride);
   1546 		case DrawTestSpec::INPUTTYPE_INT:				return createBasicArray<deInt32,	GLValue::Int>	(seed, elementCount, componentCount, offset, stride);
   1547 		case DrawTestSpec::INPUTTYPE_UNSIGNED_INT:		return createBasicArray<deUint32,	GLValue::Uint>	(seed, elementCount, componentCount, offset, stride);
   1548 		case DrawTestSpec::INPUTTYPE_HALF:				return createBasicArray<deFloat16,	GLValue::Half>	(seed, elementCount, componentCount, offset, stride);
   1549 		default:
   1550 			DE_ASSERT(false);
   1551 			break;
   1552 	}
   1553 	return DE_NULL;
   1554 }
   1555 
   1556 #if (DE_COMPILER == DE_COMPILER_GCC) && (__GNUC__ == 4) && (__GNUC_MINOR__ >= 8)
   1557 	// GCC 4.8/4.9 incorrectly emits array-bounds warning from createBasicArray()
   1558 #	define GCC_ARRAY_BOUNDS_FALSE_NEGATIVE 1
   1559 #endif
   1560 
   1561 #if defined(GCC_ARRAY_BOUNDS_FALSE_NEGATIVE)
   1562 #	pragma GCC diagnostic push
   1563 #	pragma GCC diagnostic ignored "-Warray-bounds"
   1564 #endif
   1565 
   1566 template<typename T, typename GLType>
   1567 char* RandomArrayGenerator::createBasicArray (int seed, int elementCount, int componentCount, int offset, int stride)
   1568 {
   1569 	DE_ASSERT(componentCount >= 1 && componentCount <= 4);
   1570 
   1571 	const GLType min = extractGLValue<GLType>(GLValue::getMinValue(GLValueTypeTraits<GLType>::Type));
   1572 	const GLType max = extractGLValue<GLType>(GLValue::getMaxValue(GLValueTypeTraits<GLType>::Type));
   1573 
   1574 	const size_t componentSize	= sizeof(T);
   1575 	const size_t elementSize	= componentSize * componentCount;
   1576 	const size_t bufferSize		= offset + (elementCount - 1) * stride + elementSize;
   1577 
   1578 	char* data = new char[bufferSize];
   1579 	char* writePtr = data + offset;
   1580 
   1581 	GLType previousComponents[4];
   1582 
   1583 	deRandom rnd;
   1584 	deRandom_init(&rnd, seed);
   1585 
   1586 	for (int vertexNdx = 0; vertexNdx < elementCount; vertexNdx++)
   1587 	{
   1588 		GLType components[4];
   1589 
   1590 		for (int componentNdx = 0; componentNdx < componentCount; componentNdx++)
   1591 		{
   1592 			components[componentNdx] = getRandom<GLType>(rnd, min, max);
   1593 
   1594 			// Try to not create vertex near previous
   1595 			if (vertexNdx != 0 && abs(components[componentNdx] - previousComponents[componentNdx]) < minValue<GLType>())
   1596 			{
   1597 				// Too close, try again (but only once)
   1598 				components[componentNdx] = getRandom<GLType>(rnd, min, max);
   1599 			}
   1600 		}
   1601 
   1602 		for (int componentNdx = 0; componentNdx < componentCount; componentNdx++)
   1603 			previousComponents[componentNdx] = components[componentNdx];
   1604 
   1605 		for (int componentNdx = 0; componentNdx < componentCount; componentNdx++)
   1606 			alignmentSafeAssignment(writePtr + componentNdx*componentSize, components[componentNdx].getValue());
   1607 
   1608 		writePtr += stride;
   1609 	}
   1610 
   1611 	return data;
   1612 }
   1613 
   1614 #if defined(GCC_ARRAY_BOUNDS_FALSE_NEGATIVE)
   1615 #	pragma GCC diagnostic pop
   1616 #endif
   1617 
   1618 char* RandomArrayGenerator::generatePackedArray (int seed, int elementCount, int componentCount, int offset, int stride)
   1619 {
   1620 	DE_ASSERT(componentCount == 4);
   1621 	DE_UNREF(componentCount);
   1622 
   1623 	const deUint32 limit10		= (1 << 10);
   1624 	const deUint32 limit2		= (1 << 2);
   1625 	const size_t elementSize	= 4;
   1626 	const size_t bufferSize		= offset + (elementCount - 1) * stride + elementSize;
   1627 
   1628 	char* data = new char[bufferSize];
   1629 	char* writePtr = data + offset;
   1630 
   1631 	deRandom rnd;
   1632 	deRandom_init(&rnd, seed);
   1633 
   1634 	for (int vertexNdx = 0; vertexNdx < elementCount; vertexNdx++)
   1635 	{
   1636 		const deUint32 x			= deRandom_getUint32(&rnd) % limit10;
   1637 		const deUint32 y			= deRandom_getUint32(&rnd) % limit10;
   1638 		const deUint32 z			= deRandom_getUint32(&rnd) % limit10;
   1639 		const deUint32 w			= deRandom_getUint32(&rnd) % limit2;
   1640 		const deUint32 packedValue	= (w << 30) | (z << 20) | (y << 10) | (x);
   1641 
   1642 		alignmentSafeAssignment(writePtr, packedValue);
   1643 		writePtr += stride;
   1644 	}
   1645 
   1646 	return data;
   1647 }
   1648 
   1649 char* RandomArrayGenerator::generateIndices (int seed, int elementCount, DrawTestSpec::IndexType type, int offset, int min, int max, int indexBase)
   1650 {
   1651 	char* data = DE_NULL;
   1652 
   1653 	switch (type)
   1654 	{
   1655 		case DrawTestSpec::INDEXTYPE_BYTE:
   1656 			data = createIndices<deUint8>(seed, elementCount, offset, min, max, indexBase);
   1657 			break;
   1658 
   1659 		case DrawTestSpec::INDEXTYPE_SHORT:
   1660 			data = createIndices<deUint16>(seed, elementCount, offset, min, max, indexBase);
   1661 			break;
   1662 
   1663 		case DrawTestSpec::INDEXTYPE_INT:
   1664 			data = createIndices<deUint32>(seed, elementCount, offset, min, max, indexBase);
   1665 			break;
   1666 
   1667 		default:
   1668 			DE_ASSERT(false);
   1669 			break;
   1670 	}
   1671 
   1672 	return data;
   1673 }
   1674 
   1675 template<typename T>
   1676 char* RandomArrayGenerator::createIndices (int seed, int elementCount, int offset, int min, int max, int indexBase)
   1677 {
   1678 	const size_t elementSize	= sizeof(T);
   1679 	const size_t bufferSize		= offset + elementCount * elementSize;
   1680 
   1681 	char* data = new char[bufferSize];
   1682 	char* writePtr = data + offset;
   1683 
   1684 	deUint32 oldNdx1 = deUint32(-1);
   1685 	deUint32 oldNdx2 = deUint32(-1);
   1686 
   1687 	deRandom rnd;
   1688 	deRandom_init(&rnd, seed);
   1689 
   1690 	DE_ASSERT(indexBase >= 0); // watch for underflows
   1691 
   1692 	if (min < 0 || (size_t)min > std::numeric_limits<T>::max() ||
   1693 		max < 0 || (size_t)max > std::numeric_limits<T>::max() ||
   1694 		min > max)
   1695 		DE_FATAL("Invalid range");
   1696 
   1697 	for (int elementNdx = 0; elementNdx < elementCount; ++elementNdx)
   1698 	{
   1699 		deUint32 ndx = getRandom(rnd, GLValue::Uint::create(min), GLValue::Uint::create(max)).getValue();
   1700 
   1701 		// Try not to generate same index as any of previous two. This prevents
   1702 		// generation of degenerate triangles and lines. If [min, max] is too
   1703 		// small this cannot be guaranteed.
   1704 
   1705 		if (ndx == oldNdx1)			++ndx;
   1706 		if (ndx > (deUint32)max)	ndx = min;
   1707 		if (ndx == oldNdx2)			++ndx;
   1708 		if (ndx > (deUint32)max)	ndx = min;
   1709 		if (ndx == oldNdx1)			++ndx;
   1710 		if (ndx > (deUint32)max)	ndx = min;
   1711 
   1712 		oldNdx2 = oldNdx1;
   1713 		oldNdx1 = ndx;
   1714 
   1715 		ndx += indexBase;
   1716 
   1717 		alignmentSafeAssignment<T>(writePtr + elementSize * elementNdx, T(ndx));
   1718 	}
   1719 
   1720 	return data;
   1721 }
   1722 
   1723 rr::GenericVec4	RandomArrayGenerator::generateAttributeValue (int seed, DrawTestSpec::InputType type)
   1724 {
   1725 	de::Random random(seed);
   1726 
   1727 	switch (type)
   1728 	{
   1729 		case DrawTestSpec::INPUTTYPE_FLOAT:
   1730 			return rr::GenericVec4(generateRandomVec4(random));
   1731 
   1732 		case DrawTestSpec::INPUTTYPE_INT:
   1733 			return rr::GenericVec4(generateRandomIVec4(random));
   1734 
   1735 		case DrawTestSpec::INPUTTYPE_UNSIGNED_INT:
   1736 			return rr::GenericVec4(generateRandomUVec4(random));
   1737 
   1738 		default:
   1739 			DE_ASSERT(false);
   1740 			return rr::GenericVec4(tcu::Vec4(1, 1, 1, 1));
   1741 	}
   1742 }
   1743 
   1744 } // anonymous
   1745 
   1746 // AttributePack
   1747 
   1748 class AttributePack
   1749 {
   1750 public:
   1751 
   1752 								AttributePack		(tcu::TestContext& testCtx, glu::RenderContext& renderCtx, sglr::Context& drawContext, const tcu::UVec2& screenSize, bool useVao, bool logEnabled);
   1753 								~AttributePack		(void);
   1754 
   1755 	AttributeArray*				getArray			(int i);
   1756 	int							getArrayCount		(void);
   1757 
   1758 	void						newArray			(DrawTestSpec::Storage storage);
   1759 	void						clearArrays			(void);
   1760 	void						updateProgram		(void);
   1761 
   1762 	void						render				(DrawTestSpec::Primitive primitive, DrawTestSpec::DrawMethod drawMethod, int firstVertex, int vertexCount, DrawTestSpec::IndexType indexType, const void* indexOffset, int rangeStart, int rangeEnd, int instanceCount, int indirectOffset, int baseVertex, float coordScale, float colorScale, AttributeArray* indexArray);
   1763 
   1764 	const tcu::Surface&			getSurface			(void) const { return m_screen; }
   1765 private:
   1766 	tcu::TestContext&			m_testCtx;
   1767 	glu::RenderContext&			m_renderCtx;
   1768 	sglr::Context&				m_ctx;
   1769 
   1770 	std::vector<AttributeArray*>m_arrays;
   1771 	sglr::ShaderProgram*		m_program;
   1772 	tcu::Surface				m_screen;
   1773 	const bool					m_useVao;
   1774 	const bool					m_logEnabled;
   1775 	deUint32					m_programID;
   1776 	deUint32					m_vaoID;
   1777 };
   1778 
   1779 AttributePack::AttributePack (tcu::TestContext& testCtx, glu::RenderContext& renderCtx, sglr::Context& drawContext, const tcu::UVec2& screenSize, bool useVao, bool logEnabled)
   1780 	: m_testCtx		(testCtx)
   1781 	, m_renderCtx	(renderCtx)
   1782 	, m_ctx			(drawContext)
   1783 	, m_program		(DE_NULL)
   1784 	, m_screen		(screenSize.x(), screenSize.y())
   1785 	, m_useVao		(useVao)
   1786 	, m_logEnabled	(logEnabled)
   1787 	, m_programID	(0)
   1788 	, m_vaoID		(0)
   1789 {
   1790 	if (m_useVao)
   1791 		m_ctx.genVertexArrays(1, &m_vaoID);
   1792 }
   1793 
   1794 AttributePack::~AttributePack (void)
   1795 {
   1796 	clearArrays();
   1797 
   1798 	if (m_programID)
   1799 		m_ctx.deleteProgram(m_programID);
   1800 
   1801 	if (m_program)
   1802 		delete m_program;
   1803 
   1804 	if (m_useVao)
   1805 		m_ctx.deleteVertexArrays(1, &m_vaoID);
   1806 }
   1807 
   1808 AttributeArray* AttributePack::getArray (int i)
   1809 {
   1810 	return m_arrays.at(i);
   1811 }
   1812 
   1813 int AttributePack::getArrayCount (void)
   1814 {
   1815 	return (int)m_arrays.size();
   1816 }
   1817 
   1818 void AttributePack::newArray (DrawTestSpec::Storage storage)
   1819 {
   1820 	m_arrays.push_back(new AttributeArray(storage, m_ctx));
   1821 }
   1822 
   1823 void AttributePack::clearArrays (void)
   1824 {
   1825 	for (std::vector<AttributeArray*>::iterator itr = m_arrays.begin(); itr != m_arrays.end(); itr++)
   1826 		delete *itr;
   1827 	m_arrays.clear();
   1828 }
   1829 
   1830 void AttributePack::updateProgram (void)
   1831 {
   1832 	if (m_programID)
   1833 		m_ctx.deleteProgram(m_programID);
   1834 	if (m_program)
   1835 		delete m_program;
   1836 
   1837 	m_program = new DrawTestShaderProgram(m_renderCtx, m_arrays);
   1838 	m_programID = m_ctx.createProgram(m_program);
   1839 }
   1840 
   1841 void AttributePack::render (DrawTestSpec::Primitive primitive, DrawTestSpec::DrawMethod drawMethod, int firstVertex, int vertexCount, DrawTestSpec::IndexType indexType, const void* indexOffset, int rangeStart, int rangeEnd, int instanceCount, int indirectOffset, int baseVertex, float coordScale, float colorScale, AttributeArray* indexArray)
   1842 {
   1843 	DE_ASSERT(m_program != DE_NULL);
   1844 	DE_ASSERT(m_programID != 0);
   1845 
   1846 	m_ctx.viewport(0, 0, m_screen.getWidth(), m_screen.getHeight());
   1847 	m_ctx.clearColor(0.0, 0.0, 0.0, 1.0);
   1848 	m_ctx.clear(GL_COLOR_BUFFER_BIT);
   1849 
   1850 	m_ctx.useProgram(m_programID);
   1851 	GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glUseProgram()");
   1852 
   1853 	m_ctx.uniform1f(m_ctx.getUniformLocation(m_programID, "u_coordScale"), coordScale);
   1854 	m_ctx.uniform1f(m_ctx.getUniformLocation(m_programID, "u_colorScale"), colorScale);
   1855 
   1856 	if (m_useVao)
   1857 		m_ctx.bindVertexArray(m_vaoID);
   1858 
   1859 	if (indexArray)
   1860 		indexArray->bindIndexArray(DrawTestSpec::TARGET_ELEMENT_ARRAY);
   1861 
   1862 	for (int arrayNdx = 0; arrayNdx < (int)m_arrays.size(); arrayNdx++)
   1863 	{
   1864 		std::stringstream attribName;
   1865 		attribName << "a_" << arrayNdx;
   1866 
   1867 		deUint32 loc = m_ctx.getAttribLocation(m_programID, attribName.str().c_str());
   1868 
   1869 		if (m_arrays[arrayNdx]->isBound())
   1870 		{
   1871 			m_ctx.enableVertexAttribArray(loc);
   1872 			GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glEnableVertexAttribArray()");
   1873 		}
   1874 
   1875 		m_arrays[arrayNdx]->bindAttribute(loc);
   1876 	}
   1877 
   1878 	if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWARRAYS)
   1879 	{
   1880 		m_ctx.drawArrays(primitiveToGL(primitive), firstVertex, vertexCount);
   1881 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawArrays()");
   1882 	}
   1883 	else if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWARRAYS_INSTANCED)
   1884 	{
   1885 		m_ctx.drawArraysInstanced(primitiveToGL(primitive), firstVertex, vertexCount, instanceCount);
   1886 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawArraysInstanced()");
   1887 	}
   1888 	else if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWELEMENTS)
   1889 	{
   1890 		m_ctx.drawElements(primitiveToGL(primitive), vertexCount, indexTypeToGL(indexType), indexOffset);
   1891 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawElements()");
   1892 	}
   1893 	else if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWELEMENTS_RANGED)
   1894 	{
   1895 		m_ctx.drawRangeElements(primitiveToGL(primitive), rangeStart, rangeEnd, vertexCount, indexTypeToGL(indexType), indexOffset);
   1896 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawRangeElements()");
   1897 	}
   1898 	else if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWELEMENTS_INSTANCED)
   1899 	{
   1900 		m_ctx.drawElementsInstanced(primitiveToGL(primitive), vertexCount, indexTypeToGL(indexType), indexOffset, instanceCount);
   1901 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawElementsInstanced()");
   1902 	}
   1903 	else if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWARRAYS_INDIRECT)
   1904 	{
   1905 		struct DrawCommand
   1906 		{
   1907 			GLuint count;
   1908 			GLuint primCount;
   1909 			GLuint first;
   1910 			GLuint reservedMustBeZero;
   1911 		};
   1912 		deUint8* buffer = new deUint8[sizeof(DrawCommand) + indirectOffset];
   1913 
   1914 		{
   1915 			DrawCommand command;
   1916 
   1917 			command.count				= vertexCount;
   1918 			command.primCount			= instanceCount;
   1919 			command.first				= firstVertex;
   1920 			command.reservedMustBeZero	= 0;
   1921 
   1922 			memcpy(buffer + indirectOffset, &command, sizeof(command));
   1923 
   1924 			if (m_logEnabled)
   1925 				m_testCtx.getLog()
   1926 					<< tcu::TestLog::Message
   1927 					<< "DrawArraysIndirectCommand:\n"
   1928 					<< "\tcount: " << command.count << "\n"
   1929 					<< "\tprimCount: " << command.primCount << "\n"
   1930 					<< "\tfirst: " << command.first << "\n"
   1931 					<< "\treservedMustBeZero: " << command.reservedMustBeZero << "\n"
   1932 					<< tcu::TestLog::EndMessage;
   1933 		}
   1934 
   1935 		GLuint indirectBuf = 0;
   1936 		m_ctx.genBuffers(1, &indirectBuf);
   1937 		m_ctx.bindBuffer(GL_DRAW_INDIRECT_BUFFER, indirectBuf);
   1938 		m_ctx.bufferData(GL_DRAW_INDIRECT_BUFFER, sizeof(DrawCommand) + indirectOffset, buffer, GL_STATIC_DRAW);
   1939 		delete [] buffer;
   1940 
   1941 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "Setup draw indirect buffer");
   1942 
   1943 		m_ctx.drawArraysIndirect(primitiveToGL(primitive), (const deInt8*)DE_NULL + indirectOffset);
   1944 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawArraysIndirect()");
   1945 
   1946 		m_ctx.deleteBuffers(1, &indirectBuf);
   1947 	}
   1948 	else if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWELEMENTS_INDIRECT)
   1949 	{
   1950 		struct DrawCommand
   1951 		{
   1952 			GLuint count;
   1953 			GLuint primCount;
   1954 			GLuint firstIndex;
   1955 			GLint  baseVertex;
   1956 			GLuint reservedMustBeZero;
   1957 		};
   1958 		deUint8* buffer = new deUint8[sizeof(DrawCommand) + indirectOffset];
   1959 
   1960 		{
   1961 			DrawCommand command;
   1962 
   1963 			// index offset must be converted to firstIndex by dividing with the index element size
   1964 			DE_ASSERT(((const deUint8*)indexOffset - (const deUint8*)DE_NULL) % gls::DrawTestSpec::indexTypeSize(indexType) == 0); // \note This is checked in spec validation
   1965 
   1966 			command.count				= vertexCount;
   1967 			command.primCount			= instanceCount;
   1968 			command.firstIndex			= (glw::GLuint)(((const deUint8*)indexOffset - (const deUint8*)DE_NULL) / gls::DrawTestSpec::indexTypeSize(indexType));
   1969 			command.baseVertex			= baseVertex;
   1970 			command.reservedMustBeZero	= 0;
   1971 
   1972 			memcpy(buffer + indirectOffset, &command, sizeof(command));
   1973 
   1974 			if (m_logEnabled)
   1975 				m_testCtx.getLog()
   1976 					<< tcu::TestLog::Message
   1977 					<< "DrawElementsIndirectCommand:\n"
   1978 					<< "\tcount: " << command.count << "\n"
   1979 					<< "\tprimCount: " << command.primCount << "\n"
   1980 					<< "\tfirstIndex: " << command.firstIndex << "\n"
   1981 					<< "\tbaseVertex: " << command.baseVertex << "\n"
   1982 					<< "\treservedMustBeZero: " << command.reservedMustBeZero << "\n"
   1983 					<< tcu::TestLog::EndMessage;
   1984 		}
   1985 
   1986 		GLuint indirectBuf = 0;
   1987 		m_ctx.genBuffers(1, &indirectBuf);
   1988 		m_ctx.bindBuffer(GL_DRAW_INDIRECT_BUFFER, indirectBuf);
   1989 		m_ctx.bufferData(GL_DRAW_INDIRECT_BUFFER, sizeof(DrawCommand) + indirectOffset, buffer, GL_STATIC_DRAW);
   1990 		delete [] buffer;
   1991 
   1992 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "Setup draw indirect buffer");
   1993 
   1994 		m_ctx.drawElementsIndirect(primitiveToGL(primitive), indexTypeToGL(indexType), (const deInt8*)DE_NULL + indirectOffset);
   1995 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawArraysIndirect()");
   1996 
   1997 		m_ctx.deleteBuffers(1, &indirectBuf);
   1998 	}
   1999 	else if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWELEMENTS_BASEVERTEX)
   2000 	{
   2001 		m_ctx.drawElementsBaseVertex(primitiveToGL(primitive), vertexCount, indexTypeToGL(indexType), indexOffset, baseVertex);
   2002 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawElementsBaseVertex()");
   2003 	}
   2004 	else if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWELEMENTS_INSTANCED_BASEVERTEX)
   2005 	{
   2006 		m_ctx.drawElementsInstancedBaseVertex(primitiveToGL(primitive), vertexCount, indexTypeToGL(indexType), indexOffset, instanceCount, baseVertex);
   2007 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawElementsInstancedBaseVertex()");
   2008 	}
   2009 	else if (drawMethod == DrawTestSpec::DRAWMETHOD_DRAWELEMENTS_RANGED_BASEVERTEX)
   2010 	{
   2011 		m_ctx.drawRangeElementsBaseVertex(primitiveToGL(primitive), rangeStart, rangeEnd, vertexCount, indexTypeToGL(indexType), indexOffset, baseVertex);
   2012 		GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDrawRangeElementsBaseVertex()");
   2013 	}
   2014 	else
   2015 		DE_ASSERT(DE_FALSE);
   2016 
   2017 	for (int arrayNdx = 0; arrayNdx < (int)m_arrays.size(); arrayNdx++)
   2018 	{
   2019 		if (m_arrays[arrayNdx]->isBound())
   2020 		{
   2021 			std::stringstream attribName;
   2022 			attribName << "a_" << arrayNdx;
   2023 
   2024 			deUint32 loc = m_ctx.getAttribLocation(m_programID, attribName.str().c_str());
   2025 
   2026 			m_ctx.disableVertexAttribArray(loc);
   2027 			GLU_EXPECT_NO_ERROR(m_ctx.getError(), "glDisableVertexAttribArray()");
   2028 		}
   2029 	}
   2030 
   2031 	if (m_useVao)
   2032 		m_ctx.bindVertexArray(0);
   2033 
   2034 	m_ctx.useProgram(0);
   2035 	m_ctx.readPixels(m_screen, 0, 0, m_screen.getWidth(), m_screen.getHeight());
   2036 }
   2037 
   2038 // DrawTestSpec
   2039 
   2040 DrawTestSpec::AttributeSpec	DrawTestSpec::AttributeSpec::createAttributeArray (InputType inputType, OutputType outputType, Storage storage, Usage usage, int componentCount, int offset, int stride, bool normalize, int instanceDivisor)
   2041 {
   2042 	DrawTestSpec::AttributeSpec spec;
   2043 
   2044 	spec.inputType			= inputType;
   2045 	spec.outputType			= outputType;
   2046 	spec.storage			= storage;
   2047 	spec.usage				= usage;
   2048 	spec.componentCount		= componentCount;
   2049 	spec.offset				= offset;
   2050 	spec.stride				= stride;
   2051 	spec.normalize			= normalize;
   2052 	spec.instanceDivisor	= instanceDivisor;
   2053 
   2054 	spec.useDefaultAttribute= false;
   2055 
   2056 	return spec;
   2057 }
   2058 
   2059 DrawTestSpec::AttributeSpec	DrawTestSpec::AttributeSpec::createDefaultAttribute (InputType inputType, OutputType outputType, int componentCount)
   2060 {
   2061 	DE_ASSERT(inputType == INPUTTYPE_INT || inputType == INPUTTYPE_UNSIGNED_INT || inputType == INPUTTYPE_FLOAT);
   2062 	DE_ASSERT(inputType == INPUTTYPE_FLOAT || componentCount == 4);
   2063 
   2064 	DrawTestSpec::AttributeSpec spec;
   2065 
   2066 	spec.inputType				= inputType;
   2067 	spec.outputType				= outputType;
   2068 	spec.storage				= DrawTestSpec::STORAGE_LAST;
   2069 	spec.usage					= DrawTestSpec::USAGE_LAST;
   2070 	spec.componentCount			= componentCount;
   2071 	spec.offset					= 0;
   2072 	spec.stride					= 0;
   2073 	spec.normalize				= 0;
   2074 	spec.instanceDivisor		= 0;
   2075 
   2076 	spec.useDefaultAttribute	= true;
   2077 
   2078 	return spec;
   2079 }
   2080 
   2081 DrawTestSpec::AttributeSpec::AttributeSpec (void)
   2082 {
   2083 	inputType					= DrawTestSpec::INPUTTYPE_LAST;
   2084 	outputType					= DrawTestSpec::OUTPUTTYPE_LAST;
   2085 	storage						= DrawTestSpec::STORAGE_LAST;
   2086 	usage						= DrawTestSpec::USAGE_LAST;
   2087 	componentCount				= 0;
   2088 	offset						= 0;
   2089 	stride						= 0;
   2090 	normalize					= false;
   2091 	instanceDivisor				= 0;
   2092 	useDefaultAttribute			= false;
   2093 	additionalPositionAttribute = false;
   2094 	bgraComponentOrder			= false;
   2095 }
   2096 
   2097 int DrawTestSpec::AttributeSpec::hash (void) const
   2098 {
   2099 	if (useDefaultAttribute)
   2100 	{
   2101 		return 1 * int(inputType) + 7 * int(outputType) + 13 * componentCount;
   2102 	}
   2103 	else
   2104 	{
   2105 		return 1 * int(inputType) + 2 * int(outputType) + 3 * int(storage) + 5 * int(usage) + 7 * componentCount + 11 * offset + 13 * stride + 17 * (normalize ? 0 : 1) + 19 * instanceDivisor;
   2106 	}
   2107 }
   2108 
   2109 bool DrawTestSpec::AttributeSpec::valid (glu::ApiType ctxType) const
   2110 {
   2111 	const bool inputTypeFloat				= inputType == DrawTestSpec::INPUTTYPE_FLOAT || inputType  == DrawTestSpec::INPUTTYPE_FIXED || inputType == DrawTestSpec::INPUTTYPE_HALF;
   2112 	const bool inputTypeUnsignedInteger		= inputType == DrawTestSpec::INPUTTYPE_UNSIGNED_BYTE || inputType == DrawTestSpec::INPUTTYPE_UNSIGNED_SHORT || inputType  == DrawTestSpec::INPUTTYPE_UNSIGNED_INT || inputType == DrawTestSpec::INPUTTYPE_UNSIGNED_INT_2_10_10_10;
   2113 	const bool inputTypeSignedInteger		= inputType == DrawTestSpec::INPUTTYPE_BYTE  || inputType == DrawTestSpec::INPUTTYPE_SHORT || inputType == DrawTestSpec::INPUTTYPE_INT || inputType == DrawTestSpec::INPUTTYPE_INT_2_10_10_10;
   2114 	const bool inputTypePacked				= inputType == DrawTestSpec::INPUTTYPE_UNSIGNED_INT_2_10_10_10 || inputType == DrawTestSpec::INPUTTYPE_INT_2_10_10_10;
   2115 
   2116 	const bool outputTypeFloat				= outputType == DrawTestSpec::OUTPUTTYPE_FLOAT || outputType == DrawTestSpec::OUTPUTTYPE_VEC2  || outputType == DrawTestSpec::OUTPUTTYPE_VEC3  || outputType == DrawTestSpec::OUTPUTTYPE_VEC4;
   2117 	const bool outputTypeSignedInteger		= outputType == DrawTestSpec::OUTPUTTYPE_INT   || outputType == DrawTestSpec::OUTPUTTYPE_IVEC2 || outputType == DrawTestSpec::OUTPUTTYPE_IVEC3 || outputType == DrawTestSpec::OUTPUTTYPE_IVEC4;
   2118 	const bool outputTypeUnsignedInteger	= outputType == DrawTestSpec::OUTPUTTYPE_UINT  || outputType == DrawTestSpec::OUTPUTTYPE_UVEC2 || outputType == DrawTestSpec::OUTPUTTYPE_UVEC3 || outputType == DrawTestSpec::OUTPUTTYPE_UVEC4;
   2119 
   2120 	if (useDefaultAttribute)
   2121 	{
   2122 		if (inputType != DrawTestSpec::INPUTTYPE_INT && inputType != DrawTestSpec::INPUTTYPE_UNSIGNED_INT && inputType != DrawTestSpec::INPUTTYPE_FLOAT)
   2123 			return false;
   2124 
   2125 		if (inputType != DrawTestSpec::INPUTTYPE_FLOAT && componentCount != 4)
   2126 			return false;
   2127 
   2128 		// no casting allowed (undefined results)
   2129 		if (inputType == DrawTestSpec::INPUTTYPE_INT && !outputTypeSignedInteger)
   2130 			return false;
   2131 		if (inputType == DrawTestSpec::INPUTTYPE_UNSIGNED_INT && !outputTypeUnsignedInteger)
   2132 			return false;
   2133 	}
   2134 
   2135 	if (inputTypePacked && componentCount != 4)
   2136 		return false;
   2137 
   2138 	// Invalid conversions:
   2139 
   2140 	// float -> [u]int
   2141 	if (inputTypeFloat && !outputTypeFloat)
   2142 		return false;
   2143 
   2144 	// uint -> int		(undefined results)
   2145 	if (inputTypeUnsignedInteger && outputTypeSignedInteger)
   2146 		return false;
   2147 
   2148 	// int -> uint		(undefined results)
   2149 	if (inputTypeSignedInteger && outputTypeUnsignedInteger)
   2150 		return false;
   2151 
   2152 	// packed -> non-float (packed formats are converted to floats)
   2153 	if (inputTypePacked && !outputTypeFloat)
   2154 		return false;
   2155 
   2156 	// Invalid normalize. Normalize is only valid if output type is float
   2157 	if (normalize && !outputTypeFloat)
   2158 		return false;
   2159 
   2160 	// Allow reverse order (GL_BGRA) only for packed and 4-component ubyte
   2161 	if (bgraComponentOrder && componentCount != 4)
   2162 		return false;
   2163 	if (bgraComponentOrder && inputType != DrawTestSpec::INPUTTYPE_UNSIGNED_INT_2_10_10_10 && inputType != DrawTestSpec::INPUTTYPE_INT_2_10_10_10 && inputType != DrawTestSpec::INPUTTYPE_UNSIGNED_BYTE)
   2164 		return false;
   2165 	if (bgraComponentOrder && normalize != true)
   2166 		return false;
   2167 
   2168 	// GLES2 limits
   2169 	if (ctxType == glu::ApiType::es(2,0))
   2170 	{
   2171 		if (inputType != DrawTestSpec::INPUTTYPE_FLOAT && inputType != DrawTestSpec::INPUTTYPE_FIXED &&
   2172 			inputType != DrawTestSpec::INPUTTYPE_BYTE  && inputType != DrawTestSpec::INPUTTYPE_UNSIGNED_BYTE &&
   2173 			inputType != DrawTestSpec::INPUTTYPE_SHORT && inputType != DrawTestSpec::INPUTTYPE_UNSIGNED_SHORT)
   2174 			return false;
   2175 
   2176 		if (!outputTypeFloat)
   2177 			return false;
   2178 
   2179 		if (bgraComponentOrder)
   2180 			return false;
   2181 	}
   2182 
   2183 	// GLES3 limits
   2184 	if (ctxType.getProfile() == glu::PROFILE_ES && ctxType.getMajorVersion() == 3)
   2185 	{
   2186 		if (bgraComponentOrder)
   2187 			return false;
   2188 	}
   2189 
   2190 	// No user pointers in GL core
   2191 	if (ctxType.getProfile() == glu::PROFILE_CORE)
   2192 	{
   2193 		if (!useDefaultAttribute && storage == DrawTestSpec::STORAGE_USER)
   2194 			return false;
   2195 	}
   2196 
   2197 	return true;
   2198 }
   2199 
   2200 bool DrawTestSpec::AttributeSpec::isBufferAligned (void) const
   2201 {
   2202 	const bool inputTypePacked = inputType == DrawTestSpec::INPUTTYPE_UNSIGNED_INT_2_10_10_10 || inputType == DrawTestSpec::INPUTTYPE_INT_2_10_10_10;
   2203 
   2204 	// Buffer alignment, offset is a multiple of underlying data type size?
   2205 	if (storage == STORAGE_BUFFER)
   2206 	{
   2207 		int dataTypeSize = gls::DrawTestSpec::inputTypeSize(inputType);
   2208 		if (inputTypePacked)
   2209 			dataTypeSize = 4;
   2210 
   2211 		if (offset % dataTypeSize != 0)
   2212 			return false;
   2213 	}
   2214 
   2215 	return true;
   2216 }
   2217 
   2218 bool DrawTestSpec::AttributeSpec::isBufferStrideAligned (void) const
   2219 {
   2220 	const bool inputTypePacked = inputType == DrawTestSpec::INPUTTYPE_UNSIGNED_INT_2_10_10_10 || inputType == DrawTestSpec::INPUTTYPE_INT_2_10_10_10;
   2221 
   2222 	// Buffer alignment, offset is a multiple of underlying data type size?
   2223 	if (storage == STORAGE_BUFFER)
   2224 	{
   2225 		int dataTypeSize = gls::DrawTestSpec::inputTypeSize(inputType);
   2226 		if (inputTypePacked)
   2227 			dataTypeSize = 4;
   2228 
   2229 		if (stride % dataTypeSize != 0)
   2230 			return false;
   2231 	}
   2232 
   2233 	return true;
   2234 }
   2235 
   2236 std::string DrawTestSpec::targetToString(Target target)
   2237 {
   2238 	static const char* targets[] =
   2239 	{
   2240 		"element_array",	// TARGET_ELEMENT_ARRAY = 0,
   2241 		"array"				// TARGET_ARRAY,
   2242 	};
   2243 
   2244 	return de::getSizedArrayElement<DrawTestSpec::TARGET_LAST>(targets, (int)target);
   2245 }
   2246 
   2247 std::string DrawTestSpec::inputTypeToString(InputType type)
   2248 {
   2249 	static const char* types[] =
   2250 	{
   2251 		"float",			// INPUTTYPE_FLOAT = 0,
   2252 		"fixed",			// INPUTTYPE_FIXED,
   2253 		"double",			// INPUTTYPE_DOUBLE
   2254 
   2255 		"byte",				// INPUTTYPE_BYTE,
   2256 		"short",			// INPUTTYPE_SHORT,
   2257 
   2258 		"unsigned_byte",	// INPUTTYPE_UNSIGNED_BYTE,
   2259 		"unsigned_short",	// INPUTTYPE_UNSIGNED_SHORT,
   2260 
   2261 		"int",						// INPUTTYPE_INT,
   2262 		"unsigned_int",				// INPUTTYPE_UNSIGNED_INT,
   2263 		"half",						// INPUTTYPE_HALF,
   2264 		"unsigned_int2_10_10_10",	// INPUTTYPE_UNSIGNED_INT_2_10_10_10,
   2265 		"int2_10_10_10"				// INPUTTYPE_INT_2_10_10_10,
   2266 	};
   2267 
   2268 	return de::getSizedArrayElement<DrawTestSpec::INPUTTYPE_LAST>(types, (int)type);
   2269 }
   2270 
   2271 std::string DrawTestSpec::outputTypeToString(OutputType type)
   2272 {
   2273 	static const char* types[] =
   2274 	{
   2275 		"float",		// OUTPUTTYPE_FLOAT = 0,
   2276 		"vec2",			// OUTPUTTYPE_VEC2,
   2277 		"vec3",			// OUTPUTTYPE_VEC3,
   2278 		"vec4",			// OUTPUTTYPE_VEC4,
   2279 
   2280 		"int",			// OUTPUTTYPE_INT,
   2281 		"uint",			// OUTPUTTYPE_UINT,
   2282 
   2283 		"ivec2",		// OUTPUTTYPE_IVEC2,
   2284 		"ivec3",		// OUTPUTTYPE_IVEC3,
   2285 		"ivec4",		// OUTPUTTYPE_IVEC4,
   2286 
   2287 		"uvec2",		// OUTPUTTYPE_UVEC2,
   2288 		"uvec3",		// OUTPUTTYPE_UVEC3,
   2289 		"uvec4",		// OUTPUTTYPE_UVEC4,
   2290 	};
   2291 
   2292 	return de::getSizedArrayElement<DrawTestSpec::OUTPUTTYPE_LAST>(types, (int)type);
   2293 }
   2294 
   2295 std::string DrawTestSpec::usageTypeToString(Usage usage)
   2296 {
   2297 	static const char* usages[] =
   2298 	{
   2299 		"dynamic_draw",	// USAGE_DYNAMIC_DRAW = 0,
   2300 		"static_draw",	// USAGE_STATIC_DRAW,
   2301 		"stream_draw",	// USAGE_STREAM_DRAW,
   2302 
   2303 		"stream_read",	// USAGE_STREAM_READ,
   2304 		"stream_copy",	// USAGE_STREAM_COPY,
   2305 
   2306 		"static_read",	// USAGE_STATIC_READ,
   2307 		"static_copy",	// USAGE_STATIC_COPY,
   2308 
   2309 		"dynamic_read",	// USAGE_DYNAMIC_READ,
   2310 		"dynamic_copy",	// USAGE_DYNAMIC_COPY,
   2311 	};
   2312 
   2313 	return de::getSizedArrayElement<DrawTestSpec::USAGE_LAST>(usages, (int)usage);
   2314 }
   2315 
   2316 std::string	DrawTestSpec::storageToString (Storage storage)
   2317 {
   2318 	static const char* storages[] =
   2319 	{
   2320 		"user_ptr",	// STORAGE_USER = 0,
   2321 		"buffer"	// STORAGE_BUFFER,
   2322 	};
   2323 
   2324 	return de::getSizedArrayElement<DrawTestSpec::STORAGE_LAST>(storages, (int)storage);
   2325 }
   2326 
   2327 std::string DrawTestSpec::primitiveToString (Primitive primitive)
   2328 {
   2329 	static const char* primitives[] =
   2330 	{
   2331 		"points",					// PRIMITIVE_POINTS ,
   2332 		"triangles",				// PRIMITIVE_TRIANGLES,
   2333 		"triangle_fan",				// PRIMITIVE_TRIANGLE_FAN,
   2334 		"triangle_strip",			// PRIMITIVE_TRIANGLE_STRIP,
   2335 		"lines",					// PRIMITIVE_LINES
   2336 		"line_strip",				// PRIMITIVE_LINE_STRIP
   2337 		"line_loop",				// PRIMITIVE_LINE_LOOP
   2338 		"lines_adjacency",			// PRIMITIVE_LINES_ADJACENCY
   2339 		"line_strip_adjacency",		// PRIMITIVE_LINE_STRIP_ADJACENCY
   2340 		"triangles_adjacency",		// PRIMITIVE_TRIANGLES_ADJACENCY
   2341 		"triangle_strip_adjacency",	// PRIMITIVE_TRIANGLE_STRIP_ADJACENCY
   2342 	};
   2343 
   2344 	return de::getSizedArrayElement<DrawTestSpec::PRIMITIVE_LAST>(primitives, (int)primitive);
   2345 }
   2346 
   2347 std::string DrawTestSpec::indexTypeToString (IndexType type)
   2348 {
   2349 	static const char* indexTypes[] =
   2350 	{
   2351 		"byte",		// INDEXTYPE_BYTE = 0,
   2352 		"short",	// INDEXTYPE_SHORT,
   2353 		"int",		// INDEXTYPE_INT,
   2354 	};
   2355 
   2356 	return de::getSizedArrayElement<DrawTestSpec::INDEXTYPE_LAST>(indexTypes, (int)type);
   2357 }
   2358 
   2359 std::string DrawTestSpec::drawMethodToString (DrawTestSpec::DrawMethod method)
   2360 {
   2361 	static const char* methods[] =
   2362 	{
   2363 		"draw_arrays",							//!< DRAWMETHOD_DRAWARRAYS
   2364 		"draw_arrays_instanced",				//!< DRAWMETHOD_DRAWARRAYS_INSTANCED
   2365 		"draw_arrays_indirect",					//!< DRAWMETHOD_DRAWARRAYS_INDIRECT
   2366 		"draw_elements",						//!< DRAWMETHOD_DRAWELEMENTS
   2367 		"draw_range_elements",					//!< DRAWMETHOD_DRAWELEMENTS_RANGED
   2368 		"draw_elements_instanced",				//!< DRAWMETHOD_DRAWELEMENTS_INSTANCED
   2369 		"draw_elements_indirect",				//!< DRAWMETHOD_DRAWELEMENTS_INDIRECT
   2370 		"draw_elements_base_vertex",			//!< DRAWMETHOD_DRAWELEMENTS_BASEVERTEX,
   2371 		"draw_elements_instanced_base_vertex",	//!< DRAWMETHOD_DRAWELEMENTS_INSTANCED_BASEVERTEX,
   2372 		"draw_range_elements_base_vertex",		//!< DRAWMETHOD_DRAWELEMENTS_RANGED_BASEVERTEX,
   2373 	};
   2374 
   2375 	return de::getSizedArrayElement<DrawTestSpec::DRAWMETHOD_LAST>(methods, (int)method);
   2376 }
   2377 
   2378 int DrawTestSpec::inputTypeSize (InputType type)
   2379 {
   2380 	static const int size[] =
   2381 	{
   2382 		(int)sizeof(float),			// INPUTTYPE_FLOAT = 0,
   2383 		(int)sizeof(deInt32),		// INPUTTYPE_FIXED,
   2384 		(int)sizeof(double),		// INPUTTYPE_DOUBLE
   2385 
   2386 		(int)sizeof(deInt8),		// INPUTTYPE_BYTE,
   2387 		(int)sizeof(deInt16),		// INPUTTYPE_SHORT,
   2388 
   2389 		(int)sizeof(deUint8),		// INPUTTYPE_UNSIGNED_BYTE,
   2390 		(int)sizeof(deUint16),		// INPUTTYPE_UNSIGNED_SHORT,
   2391 
   2392 		(int)sizeof(deInt32),		// INPUTTYPE_INT,
   2393 		(int)sizeof(deUint32),		// INPUTTYPE_UNSIGNED_INT,
   2394 		(int)sizeof(deFloat16),		// INPUTTYPE_HALF,
   2395 		(int)sizeof(deUint32) / 4,	// INPUTTYPE_UNSIGNED_INT_2_10_10_10,
   2396 		(int)sizeof(deUint32) / 4	// INPUTTYPE_INT_2_10_10_10,
   2397 	};
   2398 
   2399 	return de::getSizedArrayElement<DrawTestSpec::INPUTTYPE_LAST>(size, (int)type);
   2400 }
   2401 
   2402 int DrawTestSpec::indexTypeSize (IndexType type)
   2403 {
   2404 	static const int size[] =
   2405 	{
   2406 		sizeof(deUint8),	// INDEXTYPE_BYTE,
   2407 		sizeof(deUint16),	// INDEXTYPE_SHORT,
   2408 		sizeof(deUint32),	// INDEXTYPE_INT,
   2409 	};
   2410 
   2411 	return de::getSizedArrayElement<DrawTestSpec::INDEXTYPE_LAST>(size, (int)type);
   2412 }
   2413 
   2414 std::string DrawTestSpec::getName (void) const
   2415 {
   2416 	const MethodInfo	methodInfo	= getMethodInfo(drawMethod);
   2417 	const bool			hasFirst	= methodInfo.first;
   2418 	const bool			instanced	= methodInfo.instanced;
   2419 	const bool			ranged		= methodInfo.ranged;
   2420 	const bool			indexed		= methodInfo.indexed;
   2421 
   2422 	std::stringstream name;
   2423 
   2424 	for (size_t ndx = 0; ndx < attribs.size(); ++ndx)
   2425 	{
   2426 		const AttributeSpec& attrib = attribs[ndx];
   2427 
   2428 		if (attribs.size() > 1)
   2429 			name << "attrib" << ndx << "_";
   2430 
   2431 		if (ndx == 0|| attrib.additionalPositionAttribute)
   2432 			name << "pos_";
   2433 		else
   2434 			name << "col_";
   2435 
   2436 		if (attrib.useDefaultAttribute)
   2437 		{
   2438 			name
   2439 				<< "non_array_"
   2440 				<< DrawTestSpec::inputTypeToString((DrawTestSpec::InputType)attrib.inputType) << "_"
   2441 				<< attrib.componentCount << "_"
   2442 				<< DrawTestSpec::outputTypeToString(attrib.outputType) << "_";
   2443 		}
   2444 		else
   2445 		{
   2446 			name
   2447 				<< DrawTestSpec::storageToString(attrib.storage) << "_"
   2448 				<< attrib.offset << "_"
   2449 				<< attrib.stride << "_"
   2450 				<< DrawTestSpec::inputTypeToString((DrawTestSpec::InputType)attrib.inputType);
   2451 			if (attrib.inputType != DrawTestSpec::INPUTTYPE_UNSIGNED_INT_2_10_10_10 && attrib.inputType != DrawTestSpec::INPUTTYPE_INT_2_10_10_10)
   2452 				name << attrib.componentCount;
   2453 			name
   2454 				<< "_"
   2455 				<< (attrib.normalize ? "normalized_" : "")
   2456 				<< DrawTestSpec::outputTypeToString(attrib.outputType) << "_"
   2457 				<< DrawTestSpec::usageTypeToString(attrib.usage) << "_"
   2458 				<< attrib.instanceDivisor << "_";
   2459 		}
   2460 	}
   2461 
   2462 	if (indexed)
   2463 		name
   2464 			<< "index_" << DrawTestSpec::indexTypeToString(indexType) << "_"
   2465 			<< DrawTestSpec::storageToString(indexStorage) << "_"
   2466 			<< "offset" << indexPointerOffset << "_";
   2467 	if (hasFirst)
   2468 		name << "first" << first << "_";
   2469 	if (ranged)
   2470 		name << "ranged_" << indexMin << "_" << indexMax << "_";
   2471 	if (instanced)
   2472 		name << "instances" << instanceCount << "_";
   2473 
   2474 	switch (primitive)
   2475 	{
   2476 		case DrawTestSpec::PRIMITIVE_POINTS:
   2477 			name << "points_";
   2478 			break;
   2479 		case DrawTestSpec::PRIMITIVE_TRIANGLES:
   2480 			name << "triangles_";
   2481 			break;
   2482 		case DrawTestSpec::PRIMITIVE_TRIANGLE_FAN:
   2483 			name << "triangle_fan_";
   2484 			break;
   2485 		case DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP:
   2486 			name << "triangle_strip_";
   2487 			break;
   2488 		case DrawTestSpec::PRIMITIVE_LINES:
   2489 			name << "lines_";
   2490 			break;
   2491 		case DrawTestSpec::PRIMITIVE_LINE_STRIP:
   2492 			name << "line_strip_";
   2493 			break;
   2494 		case DrawTestSpec::PRIMITIVE_LINE_LOOP:
   2495 			name << "line_loop_";
   2496 			break;
   2497 		case DrawTestSpec::PRIMITIVE_LINES_ADJACENCY:
   2498 			name << "line_adjancency";
   2499 			break;
   2500 		case DrawTestSpec::PRIMITIVE_LINE_STRIP_ADJACENCY:
   2501 			name << "line_strip_adjancency";
   2502 			break;
   2503 		case DrawTestSpec::PRIMITIVE_TRIANGLES_ADJACENCY:
   2504 			name << "triangles_adjancency";
   2505 			break;
   2506 		case DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP_ADJACENCY:
   2507 			name << "triangle_strip_adjancency";
   2508 			break;
   2509 		default:
   2510 			DE_ASSERT(false);
   2511 			break;
   2512 	}
   2513 
   2514 	name << primitiveCount;
   2515 
   2516 	return name.str();
   2517 }
   2518 
   2519 std::string DrawTestSpec::getDesc (void) const
   2520 {
   2521 	std::stringstream desc;
   2522 
   2523 	for (size_t ndx = 0; ndx < attribs.size(); ++ndx)
   2524 	{
   2525 		const AttributeSpec& attrib = attribs[ndx];
   2526 
   2527 		if (attrib.useDefaultAttribute)
   2528 		{
   2529 			desc
   2530 				<< "Attribute " << ndx << ": default, " << ((ndx == 0|| attrib.additionalPositionAttribute) ? ("position ,") : ("color ,"))
   2531 				<< "input datatype " << DrawTestSpec::inputTypeToString((DrawTestSpec::InputType)attrib.inputType) << ", "
   2532 				<< "input component count " << attrib.componentCount << ", "
   2533 				<< "used as " << DrawTestSpec::outputTypeToString(attrib.outputType) << ", ";
   2534 		}
   2535 		else
   2536 		{
   2537 			desc
   2538 				<< "Attribute " << ndx << ": " << ((ndx == 0|| attrib.additionalPositionAttribute) ? ("position ,") : ("color ,"))
   2539 				<< "Storage in " << DrawTestSpec::storageToString(attrib.storage) << ", "
   2540 				<< "stride " << attrib.stride << ", "
   2541 				<< "input datatype " << DrawTestSpec::inputTypeToString((DrawTestSpec::InputType)attrib.inputType) << ", "
   2542 				<< "input component count " << attrib.componentCount << ", "
   2543 				<< (attrib.normalize ? "normalized, " : "")
   2544 				<< "used as " << DrawTestSpec::outputTypeToString(attrib.outputType) << ", "
   2545 				<< "instance divisor " << attrib.instanceDivisor << ", ";
   2546 		}
   2547 	}
   2548 
   2549 	if (drawMethod == DRAWMETHOD_DRAWARRAYS)
   2550 	{
   2551 		desc
   2552 			<< "drawArrays(), "
   2553 			<< "first " << first << ", ";
   2554 	}
   2555 	else if (drawMethod == DRAWMETHOD_DRAWARRAYS_INSTANCED)
   2556 	{
   2557 		desc
   2558 			<< "drawArraysInstanced(), "
   2559 			<< "first " << first << ", "
   2560 			<< "instance count " << instanceCount << ", ";
   2561 	}
   2562 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS)
   2563 	{
   2564 		desc
   2565 			<< "drawElements(), "
   2566 			<< "index type " << DrawTestSpec::indexTypeToString(indexType) << ", "
   2567 			<< "index storage in " << DrawTestSpec::storageToString(indexStorage) << ", "
   2568 			<< "index offset " << indexPointerOffset << ", ";
   2569 	}
   2570 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS_RANGED)
   2571 	{
   2572 		desc
   2573 			<< "drawElementsRanged(), "
   2574 			<< "index type " << DrawTestSpec::indexTypeToString(indexType) << ", "
   2575 			<< "index storage in " << DrawTestSpec::storageToString(indexStorage) << ", "
   2576 			<< "index offset " << indexPointerOffset << ", "
   2577 			<< "range start " << indexMin << ", "
   2578 			<< "range end " << indexMax << ", ";
   2579 	}
   2580 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS_INSTANCED)
   2581 	{
   2582 		desc
   2583 			<< "drawElementsInstanced(), "
   2584 			<< "index type " << DrawTestSpec::indexTypeToString(indexType) << ", "
   2585 			<< "index storage in " << DrawTestSpec::storageToString(indexStorage) << ", "
   2586 			<< "index offset " << indexPointerOffset << ", "
   2587 			<< "instance count " << instanceCount << ", ";
   2588 	}
   2589 	else if (drawMethod == DRAWMETHOD_DRAWARRAYS_INDIRECT)
   2590 	{
   2591 		desc
   2592 			<< "drawArraysIndirect(), "
   2593 			<< "first " << first << ", "
   2594 			<< "instance count " << instanceCount << ", "
   2595 			<< "indirect offset " << indirectOffset << ", ";
   2596 	}
   2597 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS_INDIRECT)
   2598 	{
   2599 		desc
   2600 			<< "drawElementsIndirect(), "
   2601 			<< "index type " << DrawTestSpec::indexTypeToString(indexType) << ", "
   2602 			<< "index storage in " << DrawTestSpec::storageToString(indexStorage) << ", "
   2603 			<< "index offset " << indexPointerOffset << ", "
   2604 			<< "instance count " << instanceCount << ", "
   2605 			<< "indirect offset " << indirectOffset << ", "
   2606 			<< "base vertex " << baseVertex << ", ";
   2607 	}
   2608 	else
   2609 		DE_ASSERT(DE_FALSE);
   2610 
   2611 	desc << primitiveCount;
   2612 
   2613 	switch (primitive)
   2614 	{
   2615 		case DrawTestSpec::PRIMITIVE_POINTS:
   2616 			desc << "points";
   2617 			break;
   2618 		case DrawTestSpec::PRIMITIVE_TRIANGLES:
   2619 			desc << "triangles";
   2620 			break;
   2621 		case DrawTestSpec::PRIMITIVE_TRIANGLE_FAN:
   2622 			desc << "triangles (fan)";
   2623 			break;
   2624 		case DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP:
   2625 			desc << "triangles (strip)";
   2626 			break;
   2627 		case DrawTestSpec::PRIMITIVE_LINES:
   2628 			desc << "lines";
   2629 			break;
   2630 		case DrawTestSpec::PRIMITIVE_LINE_STRIP:
   2631 			desc << "lines (strip)";
   2632 			break;
   2633 		case DrawTestSpec::PRIMITIVE_LINE_LOOP:
   2634 			desc << "lines (loop)";
   2635 			break;
   2636 		case DrawTestSpec::PRIMITIVE_LINES_ADJACENCY:
   2637 			desc << "lines (adjancency)";
   2638 			break;
   2639 		case DrawTestSpec::PRIMITIVE_LINE_STRIP_ADJACENCY:
   2640 			desc << "lines (strip, adjancency)";
   2641 			break;
   2642 		case DrawTestSpec::PRIMITIVE_TRIANGLES_ADJACENCY:
   2643 			desc << "triangles (adjancency)";
   2644 			break;
   2645 		case DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP_ADJACENCY:
   2646 			desc << "triangles (strip, adjancency)";
   2647 			break;
   2648 		default:
   2649 			DE_ASSERT(false);
   2650 			break;
   2651 	}
   2652 
   2653 	return desc.str();
   2654 }
   2655 
   2656 std::string DrawTestSpec::getMultilineDesc (void) const
   2657 {
   2658 	std::stringstream desc;
   2659 
   2660 	for (size_t ndx = 0; ndx < attribs.size(); ++ndx)
   2661 	{
   2662 		const AttributeSpec& attrib = attribs[ndx];
   2663 
   2664 		if (attrib.useDefaultAttribute)
   2665 		{
   2666 			desc
   2667 				<< "Attribute " << ndx << ": default, " << ((ndx == 0|| attrib.additionalPositionAttribute) ? ("position\n") : ("color\n"))
   2668 				<< "\tinput datatype " << DrawTestSpec::inputTypeToString((DrawTestSpec::InputType)attrib.inputType) << "\n"
   2669 				<< "\tinput component count " << attrib.componentCount << "\n"
   2670 				<< "\tused as " << DrawTestSpec::outputTypeToString(attrib.outputType) << "\n";
   2671 		}
   2672 		else
   2673 		{
   2674 			desc
   2675 				<< "Attribute " << ndx << ": " << ((ndx == 0|| attrib.additionalPositionAttribute) ? ("position\n") : ("color\n"))
   2676 				<< "\tStorage in " << DrawTestSpec::storageToString(attrib.storage) << "\n"
   2677 				<< "\tstride " << attrib.stride << "\n"
   2678 				<< "\tinput datatype " << DrawTestSpec::inputTypeToString((DrawTestSpec::InputType)attrib.inputType) << "\n"
   2679 				<< "\tinput component count " << attrib.componentCount << "\n"
   2680 				<< (attrib.normalize ? "\tnormalized\n" : "")
   2681 				<< "\tused as " << DrawTestSpec::outputTypeToString(attrib.outputType) << "\n"
   2682 				<< "\tinstance divisor " << attrib.instanceDivisor << "\n";
   2683 		}
   2684 	}
   2685 
   2686 	if (drawMethod == DRAWMETHOD_DRAWARRAYS)
   2687 	{
   2688 		desc
   2689 			<< "drawArrays()\n"
   2690 			<< "\tfirst " << first << "\n";
   2691 	}
   2692 	else if (drawMethod == DRAWMETHOD_DRAWARRAYS_INSTANCED)
   2693 	{
   2694 		desc
   2695 			<< "drawArraysInstanced()\n"
   2696 			<< "\tfirst " << first << "\n"
   2697 			<< "\tinstance count " << instanceCount << "\n";
   2698 	}
   2699 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS)
   2700 	{
   2701 		desc
   2702 			<< "drawElements()\n"
   2703 			<< "\tindex type " << DrawTestSpec::indexTypeToString(indexType) << "\n"
   2704 			<< "\tindex storage in " << DrawTestSpec::storageToString(indexStorage) << "\n"
   2705 			<< "\tindex offset " << indexPointerOffset << "\n";
   2706 	}
   2707 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS_RANGED)
   2708 	{
   2709 		desc
   2710 			<< "drawElementsRanged()\n"
   2711 			<< "\tindex type " << DrawTestSpec::indexTypeToString(indexType) << "\n"
   2712 			<< "\tindex storage in " << DrawTestSpec::storageToString(indexStorage) << "\n"
   2713 			<< "\tindex offset " << indexPointerOffset << "\n"
   2714 			<< "\trange start " << indexMin << "\n"
   2715 			<< "\trange end " << indexMax << "\n";
   2716 	}
   2717 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS_INSTANCED)
   2718 	{
   2719 		desc
   2720 			<< "drawElementsInstanced()\n"
   2721 			<< "\tindex type " << DrawTestSpec::indexTypeToString(indexType) << "\n"
   2722 			<< "\tindex storage in " << DrawTestSpec::storageToString(indexStorage) << "\n"
   2723 			<< "\tindex offset " << indexPointerOffset << "\n"
   2724 			<< "\tinstance count " << instanceCount << "\n";
   2725 	}
   2726 	else if (drawMethod == DRAWMETHOD_DRAWARRAYS_INDIRECT)
   2727 	{
   2728 		desc
   2729 			<< "drawArraysIndirect()\n"
   2730 			<< "\tfirst " << first << "\n"
   2731 			<< "\tinstance count " << instanceCount << "\n"
   2732 			<< "\tindirect offset " << indirectOffset << "\n";
   2733 	}
   2734 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS_INDIRECT)
   2735 	{
   2736 		desc
   2737 			<< "drawElementsIndirect()\n"
   2738 			<< "\tindex type " << DrawTestSpec::indexTypeToString(indexType) << "\n"
   2739 			<< "\tindex storage in " << DrawTestSpec::storageToString(indexStorage) << "\n"
   2740 			<< "\tindex offset " << indexPointerOffset << "\n"
   2741 			<< "\tinstance count " << instanceCount << "\n"
   2742 			<< "\tindirect offset " << indirectOffset << "\n"
   2743 			<< "\tbase vertex " << baseVertex << "\n";
   2744 	}
   2745 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS_BASEVERTEX)
   2746 	{
   2747 		desc
   2748 			<< "drawElementsBaseVertex()\n"
   2749 			<< "\tindex type " << DrawTestSpec::indexTypeToString(indexType) << "\n"
   2750 			<< "\tindex storage in " << DrawTestSpec::storageToString(indexStorage) << "\n"
   2751 			<< "\tindex offset " << indexPointerOffset << "\n"
   2752 			<< "\tbase vertex " << baseVertex << "\n";
   2753 	}
   2754 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS_INSTANCED_BASEVERTEX)
   2755 	{
   2756 		desc
   2757 			<< "drawElementsInstancedBaseVertex()\n"
   2758 			<< "\tindex type " << DrawTestSpec::indexTypeToString(indexType) << "\n"
   2759 			<< "\tindex storage in " << DrawTestSpec::storageToString(indexStorage) << "\n"
   2760 			<< "\tindex offset " << indexPointerOffset << "\n"
   2761 			<< "\tinstance count " << instanceCount << "\n"
   2762 			<< "\tbase vertex " << baseVertex << "\n";
   2763 	}
   2764 	else if (drawMethod == DRAWMETHOD_DRAWELEMENTS_RANGED_BASEVERTEX)
   2765 	{
   2766 		desc
   2767 			<< "drawRangeElementsBaseVertex()\n"
   2768 			<< "\tindex type " << DrawTestSpec::indexTypeToString(indexType) << "\n"
   2769 			<< "\tindex storage in " << DrawTestSpec::storageToString(indexStorage) << "\n"
   2770 			<< "\tindex offset " << indexPointerOffset << "\n"
   2771 			<< "\tbase vertex " << baseVertex << "\n"
   2772 			<< "\trange start " << indexMin << "\n"
   2773 			<< "\trange end " << indexMax << "\n";
   2774 	}
   2775 	else
   2776 		DE_ASSERT(DE_FALSE);
   2777 
   2778 	desc << "\t" << primitiveCount << " ";
   2779 
   2780 	switch (primitive)
   2781 	{
   2782 		case DrawTestSpec::PRIMITIVE_POINTS:
   2783 			desc << "points";
   2784 			break;
   2785 		case DrawTestSpec::PRIMITIVE_TRIANGLES:
   2786 			desc << "triangles";
   2787 			break;
   2788 		case DrawTestSpec::PRIMITIVE_TRIANGLE_FAN:
   2789 			desc << "triangles (fan)";
   2790 			break;
   2791 		case DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP:
   2792 			desc << "triangles (strip)";
   2793 			break;
   2794 		case DrawTestSpec::PRIMITIVE_LINES:
   2795 			desc << "lines";
   2796 			break;
   2797 		case DrawTestSpec::PRIMITIVE_LINE_STRIP:
   2798 			desc << "lines (strip)";
   2799 			break;
   2800 		case DrawTestSpec::PRIMITIVE_LINE_LOOP:
   2801 			desc << "lines (loop)";
   2802 			break;
   2803 		case DrawTestSpec::PRIMITIVE_LINES_ADJACENCY:
   2804 			desc << "lines (adjancency)";
   2805 			break;
   2806 		case DrawTestSpec::PRIMITIVE_LINE_STRIP_ADJACENCY:
   2807 			desc << "lines (strip, adjancency)";
   2808 			break;
   2809 		case DrawTestSpec::PRIMITIVE_TRIANGLES_ADJACENCY:
   2810 			desc << "triangles (adjancency)";
   2811 			break;
   2812 		case DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP_ADJACENCY:
   2813 			desc << "triangles (strip, adjancency)";
   2814 			break;
   2815 		default:
   2816 			DE_ASSERT(false);
   2817 			break;
   2818 	}
   2819 
   2820 	desc << "\n";
   2821 
   2822 	return desc.str();
   2823 }
   2824 
   2825 DrawTestSpec::DrawTestSpec (void)
   2826 {
   2827 	primitive			= PRIMITIVE_LAST;
   2828 	primitiveCount		= 0;
   2829 	drawMethod			= DRAWMETHOD_LAST;
   2830 	indexType			= INDEXTYPE_LAST;
   2831 	indexPointerOffset	= 0;
   2832 	indexStorage		= STORAGE_LAST;
   2833 	first				= 0;
   2834 	indexMin			= 0;
   2835 	indexMax			= 0;
   2836 	instanceCount		= 0;
   2837 	indirectOffset		= 0;
   2838 	baseVertex			= 0;
   2839 }
   2840 
   2841 int DrawTestSpec::hash (void) const
   2842 {
   2843 	// Use only drawmode-relevant values in "hashing" as the unrelevant values might not be set (causing non-deterministic behavior).
   2844 	const MethodInfo	methodInfo		= getMethodInfo(drawMethod);
   2845 	const bool			arrayed			= methodInfo.first;
   2846 	const bool			instanced		= methodInfo.instanced;
   2847 	const bool			ranged			= methodInfo.ranged;
   2848 	const bool			indexed			= methodInfo.indexed;
   2849 	const bool			indirect		= methodInfo.indirect;
   2850 	const bool			hasBaseVtx		= methodInfo.baseVertex;
   2851 
   2852 	const int			indexHash		= (!indexed)	? (0) : (int(indexType) + 10 * indexPointerOffset + 100 * int(indexStorage));
   2853 	const int			arrayHash		= (!arrayed)	? (0) : (first);
   2854 	const int			indexRangeHash	= (!ranged)		? (0) : (indexMin + 10 * indexMax);
   2855 	const int			instanceHash	= (!instanced)	? (0) : (instanceCount);
   2856 	const int			indirectHash	= (!indirect)	? (0) : (indirectOffset);
   2857 	const int			baseVtxHash		= (!hasBaseVtx)	? (0) : (baseVertex);
   2858 	const int			basicHash		= int(primitive) + 10 * primitiveCount + 100 * int(drawMethod);
   2859 
   2860 	return indexHash + 3 * arrayHash + 5 * indexRangeHash + 7 * instanceHash + 13 * basicHash + 17 * (int)attribs.size() + 19 * primitiveCount + 23 * indirectHash + 27 * baseVtxHash;
   2861 }
   2862 
   2863 bool DrawTestSpec::valid (void) const
   2864 {
   2865 	DE_ASSERT(apiType.getProfile() != glu::PROFILE_LAST);
   2866 	DE_ASSERT(primitive != PRIMITIVE_LAST);
   2867 	DE_ASSERT(drawMethod != DRAWMETHOD_LAST);
   2868 
   2869 	const MethodInfo methodInfo = getMethodInfo(drawMethod);
   2870 
   2871 	for (int ndx = 0; ndx < (int)attribs.size(); ++ndx)
   2872 		if (!attribs[ndx].valid(apiType))
   2873 			return false;
   2874 
   2875 	if (methodInfo.ranged)
   2876 	{
   2877 		deUint32 maxIndexValue = 0;
   2878 		if (indexType == INDEXTYPE_BYTE)
   2879 			maxIndexValue = GLValue::getMaxValue(INPUTTYPE_UNSIGNED_BYTE).ub.getValue();
   2880 		else if (indexType == INDEXTYPE_SHORT)
   2881 			maxIndexValue = GLValue::getMaxValue(INPUTTYPE_UNSIGNED_SHORT).us.getValue();
   2882 		else if (indexType == INDEXTYPE_INT)
   2883 			maxIndexValue = GLValue::getMaxValue(INPUTTYPE_UNSIGNED_INT).ui.getValue();
   2884 		else
   2885 			DE_ASSERT(DE_FALSE);
   2886 
   2887 		if (indexMin > indexMax)
   2888 			return false;
   2889 		if (indexMin < 0 || indexMax < 0)
   2890 			return false;
   2891 		if ((deUint32)indexMin > maxIndexValue || (deUint32)indexMax > maxIndexValue)
   2892 			return false;
   2893 	}
   2894 
   2895 	if (methodInfo.first && first < 0)
   2896 		return false;
   2897 
   2898 	// GLES2 limits
   2899 	if (apiType == glu::ApiType::es(2,0))
   2900 	{
   2901 		if (drawMethod != gls::DrawTestSpec::DRAWMETHOD_DRAWARRAYS && drawMethod != gls::DrawTestSpec::DRAWMETHOD_DRAWELEMENTS)
   2902 			return false;
   2903 		if (drawMethod == gls::DrawTestSpec::DRAWMETHOD_DRAWELEMENTS && (indexType != INDEXTYPE_BYTE && indexType != INDEXTYPE_SHORT))
   2904 			return false;
   2905 	}
   2906 
   2907 	// Indirect limitations
   2908 	if (methodInfo.indirect)
   2909 	{
   2910 		// Indirect offset alignment
   2911 		if (indirectOffset % 4 != 0)
   2912 			return false;
   2913 
   2914 		// All attribute arrays must be stored in a buffer
   2915 		for (int ndx = 0; ndx < (int)attribs.size(); ++ndx)
   2916 			if (!attribs[ndx].useDefaultAttribute && attribs[ndx].storage == gls::DrawTestSpec::STORAGE_USER)
   2917 				return false;
   2918 	}
   2919 	if (drawMethod == DRAWMETHOD_DRAWELEMENTS_INDIRECT)
   2920 	{
   2921 		// index offset must be convertable to firstIndex
   2922 		if (indexPointerOffset % gls::DrawTestSpec::indexTypeSize(indexType) != 0)
   2923 			return false;
   2924 
   2925 		// Indices must be in a buffer
   2926 		if (indexStorage != STORAGE_BUFFER)
   2927 			return false;
   2928 	}
   2929 
   2930 	// Do not allow user pointer in GL core
   2931 	if (apiType.getProfile() == glu::PROFILE_CORE)
   2932 	{
   2933 		if (methodInfo.indexed && indexStorage == DrawTestSpec::STORAGE_USER)
   2934 			return false;
   2935 	}
   2936 
   2937 	return true;
   2938 }
   2939 
   2940 DrawTestSpec::CompatibilityTestType DrawTestSpec::isCompatibilityTest (void) const
   2941 {
   2942 	const MethodInfo methodInfo = getMethodInfo(drawMethod);
   2943 
   2944 	bool bufferAlignmentBad = false;
   2945 	bool strideAlignmentBad = false;
   2946 
   2947 	// Attribute buffer alignment
   2948 	for (int ndx = 0; ndx < (int)attribs.size(); ++ndx)
   2949 		if (!attribs[ndx].isBufferAligned())
   2950 			bufferAlignmentBad = true;
   2951 
   2952 	// Attribute stride alignment
   2953 	for (int ndx = 0; ndx < (int)attribs.size(); ++ndx)
   2954 		if (!attribs[ndx].isBufferStrideAligned())
   2955 			strideAlignmentBad = true;
   2956 
   2957 	// Index buffer alignment
   2958 	if (methodInfo.indexed)
   2959 	{
   2960 		if (indexStorage == STORAGE_BUFFER)
   2961 		{
   2962 			int indexSize = 0;
   2963 			if (indexType == INDEXTYPE_BYTE)
   2964 				indexSize = 1;
   2965 			else if (indexType == INDEXTYPE_SHORT)
   2966 				indexSize = 2;
   2967 			else if (indexType == INDEXTYPE_INT)
   2968 				indexSize = 4;
   2969 			else
   2970 				DE_ASSERT(DE_FALSE);
   2971 
   2972 			if (indexPointerOffset % indexSize != 0)
   2973 				bufferAlignmentBad = true;
   2974 		}
   2975 	}
   2976 
   2977 	// \note combination bad alignment & stride is treated as bad offset
   2978 	if (bufferAlignmentBad)
   2979 		return COMPATIBILITY_UNALIGNED_OFFSET;
   2980 	else if (strideAlignmentBad)
   2981 		return COMPATIBILITY_UNALIGNED_STRIDE;
   2982 	else
   2983 		return COMPATIBILITY_NONE;
   2984 }
   2985 
   2986 enum PrimitiveClass
   2987 {
   2988 	PRIMITIVECLASS_POINT = 0,
   2989 	PRIMITIVECLASS_LINE,
   2990 	PRIMITIVECLASS_TRIANGLE,
   2991 
   2992 	PRIMITIVECLASS_LAST
   2993 };
   2994 
   2995 static PrimitiveClass getDrawPrimitiveClass (gls::DrawTestSpec::Primitive primitiveType)
   2996 {
   2997 	switch (primitiveType)
   2998 	{
   2999 		case gls::DrawTestSpec::PRIMITIVE_POINTS:
   3000 			return PRIMITIVECLASS_POINT;
   3001 
   3002 		case gls::DrawTestSpec::PRIMITIVE_LINES:
   3003 		case gls::DrawTestSpec::PRIMITIVE_LINE_STRIP:
   3004 		case gls::DrawTestSpec::PRIMITIVE_LINE_LOOP:
   3005 		case gls::DrawTestSpec::PRIMITIVE_LINES_ADJACENCY:
   3006 		case gls::DrawTestSpec::PRIMITIVE_LINE_STRIP_ADJACENCY:
   3007 			return PRIMITIVECLASS_LINE;
   3008 
   3009 		case gls::DrawTestSpec::PRIMITIVE_TRIANGLES:
   3010 		case gls::DrawTestSpec::PRIMITIVE_TRIANGLE_FAN:
   3011 		case gls::DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP:
   3012 		case gls::DrawTestSpec::PRIMITIVE_TRIANGLES_ADJACENCY:
   3013 		case gls::DrawTestSpec::PRIMITIVE_TRIANGLE_STRIP_ADJACENCY:
   3014 			return PRIMITIVECLASS_TRIANGLE;
   3015 
   3016 		default:
   3017 			DE_ASSERT(false);
   3018 			return PRIMITIVECLASS_LAST;
   3019 	}
   3020 }
   3021 
   3022 static bool containsLineCases (const std::vector<DrawTestSpec>& m_specs)
   3023 {
   3024 	for (int ndx = 0; ndx < (int)m_specs.size(); ++ndx)
   3025 	{
   3026 		if (getDrawPrimitiveClass(m_specs[ndx].primitive) == PRIMITIVECLASS_LINE)
   3027 			return true;
   3028 	}
   3029 	return false;
   3030 }
   3031 
   3032 // DrawTest
   3033 
   3034 DrawTest::DrawTest (tcu::TestContext& testCtx, glu::RenderContext& renderCtx, const DrawTestSpec& spec, const char* name, const char* desc)
   3035 	: TestCase			(testCtx, name, desc)
   3036 	, m_renderCtx		(renderCtx)
   3037 	, m_refBuffers		(DE_NULL)
   3038 	, m_refContext		(DE_NULL)
   3039 	, m_glesContext		(DE_NULL)
   3040 	, m_glArrayPack		(DE_NULL)
   3041 	, m_rrArrayPack		(DE_NULL)
   3042 	, m_maxDiffRed		(-1)
   3043 	, m_maxDiffGreen	(-1)
   3044 	, m_maxDiffBlue		(-1)
   3045 	, m_iteration		(0)
   3046 	, m_result			()	// \note no per-iteration result logging (only one iteration)
   3047 {
   3048 	addIteration(spec);
   3049 }
   3050 
   3051 DrawTest::DrawTest (tcu::TestContext& testCtx, glu::RenderContext& renderCtx, const char* name, const char* desc)
   3052 	: TestCase			(testCtx, name, desc)
   3053 	, m_renderCtx		(renderCtx)
   3054 	, m_refBuffers		(DE_NULL)
   3055 	, m_refContext		(DE_NULL)
   3056 	, m_glesContext		(DE_NULL)
   3057 	, m_glArrayPack		(DE_NULL)
   3058 	, m_rrArrayPack		(DE_NULL)
   3059 	, m_maxDiffRed		(-1)
   3060 	, m_maxDiffGreen	(-1)
   3061 	, m_maxDiffBlue		(-1)
   3062 	, m_iteration		(0)
   3063 	, m_result			(testCtx.getLog(), "Iteration result: ")
   3064 {
   3065 }
   3066 
   3067 DrawTest::~DrawTest	(void)
   3068 {
   3069 	deinit();
   3070 }
   3071 
   3072 void DrawTest::addIteration (const DrawTestSpec& spec, const char* description)
   3073 {
   3074 	// Validate spec
   3075 	const bool validSpec = spec.valid();
   3076 	DE_ASSERT(validSpec);
   3077 
   3078 	if (!validSpec)
   3079 		return;
   3080 
   3081 	// Check the context type is the same with other iterations
   3082 	if (!m_specs.empty())
   3083 	{
   3084 		const bool validContext = m_specs[0].apiType == spec.apiType;
   3085 		DE_ASSERT(validContext);
   3086 
   3087 		if (!validContext)
   3088 			return;
   3089 	}
   3090 
   3091 	m_specs.push_back(spec);
   3092 
   3093 	if (description)
   3094 		m_iteration_descriptions.push_back(std::string(description));
   3095 	else
   3096 		m_iteration_descriptions.push_back(std::string());
   3097 }
   3098 
   3099 void DrawTest::init (void)
   3100 {
   3101 	DE_ASSERT(!m_specs.empty());
   3102 	DE_ASSERT(contextSupports(m_renderCtx.getType(), m_specs[0].apiType));
   3103 
   3104 	const int						renderTargetWidth	= de::min(MAX_RENDER_TARGET_SIZE, m_renderCtx.getRenderTarget().getWidth());
   3105 	const int						renderTargetHeight	= de::min(MAX_RENDER_TARGET_SIZE, m_renderCtx.getRenderTarget().getHeight());
   3106 
   3107 	// lines have significantly different rasterization in MSAA mode
   3108 	const bool						isLineCase			= containsLineCases(m_specs);
   3109 	const bool						isMSAACase			= m_renderCtx.getRenderTarget().getNumSamples() > 1;
   3110 	const int						renderTargetSamples	= (isMSAACase && isLineCase) ? (4) : (1);
   3111 
   3112 	sglr::ReferenceContextLimits	limits				(m_renderCtx);
   3113 	bool							useVao				= false;
   3114 
   3115 	m_glesContext = new sglr::GLContext(m_renderCtx, m_testCtx.getLog(), sglr::GLCONTEXT_LOG_CALLS | sglr::GLCONTEXT_LOG_PROGRAMS, tcu::IVec4(0, 0, renderTargetWidth, renderTargetHeight));
   3116 
   3117 	if (m_renderCtx.getType().getAPI() == glu::ApiType::es(2,0) || m_renderCtx.getType().getAPI() == glu::ApiType::es(3,0))
   3118 		useVao = false;
   3119 	else if (contextSupports(m_renderCtx.getType(), glu::ApiType::es(3,1)) || glu::isContextTypeGLCore(m_renderCtx.getType()))
   3120 		useVao = true;
   3121 	else
   3122 		DE_FATAL("Unknown context type");
   3123 
   3124 	m_refBuffers	= new sglr::ReferenceContextBuffers(m_renderCtx.getRenderTarget().getPixelFormat(), 0, 0, renderTargetWidth, renderTargetHeight, renderTargetSamples);
   3125 	m_refContext	= new sglr::ReferenceContext(limits, m_refBuffers->getColorbuffer(), m_refBuffers->getDepthbuffer(), m_refBuffers->getStencilbuffer());
   3126 
   3127 	m_glArrayPack	= new AttributePack(m_testCtx, m_renderCtx, *m_glesContext, tcu::UVec2(renderTargetWidth, renderTargetHeight), useVao, true);
   3128 	m_rrArrayPack	= new AttributePack(m_testCtx, m_renderCtx, *m_refContext,  tcu::UVec2(renderTargetWidth, renderTargetHeight), useVao, false);
   3129 
   3130 	m_maxDiffRed	= deCeilFloatToInt32(256.0f * (6.0f / (float)(1 << m_renderCtx.getRenderTarget().getPixelFormat().redBits)));
   3131 	m_maxDiffGreen	= deCeilFloatToInt32(256.0f * (6.0f / (float)(1 << m_renderCtx.getRenderTarget().getPixelFormat().greenBits)));
   3132 	m_maxDiffBlue	= deCeilFloatToInt32(256.0f * (6.0f / (float)(1 << m_renderCtx.getRenderTarget().getPixelFormat().blueBits)));
   3133 }
   3134 
   3135 void DrawTest::deinit (void)
   3136 {
   3137 	delete m_glArrayPack;
   3138 	delete m_rrArrayPack;
   3139 	delete m_refBuffers;
   3140 	delete m_refContext;
   3141 	delete m_glesContext;
   3142 
   3143 	m_glArrayPack	= DE_NULL;
   3144 	m_rrArrayPack	= DE_NULL;
   3145 	m_refBuffers	= DE_NULL;
   3146 	m_refContext	= DE_NULL;
   3147 	m_glesContext	= DE_NULL;
   3148 }
   3149 
   3150 DrawTest::IterateResult DrawTest::iterate (void)
   3151 {
   3152 	const int					specNdx			= (m_iteration / 2);
   3153 	const bool					drawStep		= (m_iteration % 2) == 0;
   3154 	const bool					compareStep		= (m_iteration % 2) == 1;
   3155 	const IterateResult			iterateResult	= ((size_t)m_iteration + 1 == m_specs.size()*2) ? (STOP) : (CONTINUE);
   3156 	const DrawTestSpec&			spec			= m_specs[specNdx];
   3157 	const bool					updateProgram	= (m_iteration == 0) || (drawStep && !checkSpecsShaderCompatible(m_specs[specNdx], m_specs[specNdx-1])); // try to use the same shader in all iterations
   3158 	IterationLogSectionEmitter	sectionEmitter	(m_testCtx.getLog(), specNdx, m_specs.size(), m_iteration_descriptions[specNdx], drawStep && m_specs.size()!=1);
   3159 
   3160 	if (drawStep)
   3161 	{
   3162 		const MethodInfo	methodInfo				= getMethodInfo(spec.drawMethod);
   3163 		const bool			indexed					= methodInfo.indexed;
   3164 		const bool			instanced				= methodInfo.instanced;
   3165 		const bool			ranged					= methodInfo.ranged;
   3166 		const bool			hasFirst				= methodInfo.first;
   3167 		const bool			hasBaseVtx				= methodInfo.baseVertex;
   3168 
   3169 		const size_t		primitiveElementCount	= getElementCount(spec.primitive, spec.primitiveCount);						// !< elements to be drawn
   3170 		const int			indexMin				= (ranged) ? (spec.indexMin) : (0);
   3171 		const int			firstAddition			= (hasFirst) ? (spec.first) : (0);
   3172 		const int			baseVertexAddition		= (hasBaseVtx && spec.baseVertex > 0) ? ( spec.baseVertex) : (0);			// spec.baseVertex > 0 => Create bigger attribute buffer
   3173 		const int			indexBase				= (hasBaseVtx && spec.baseVertex < 0) ? (-spec.baseVertex) : (0);			// spec.baseVertex < 0 => Create bigger indices
   3174 		const size_t		elementCount			= primitiveElementCount + indexMin + firstAddition + baseVertexAddition;	// !< elements in buffer (buffer should have at least primitiveElementCount ACCESSIBLE (index range, first) elements)
   3175 		const int			maxElementIndex			= (int)primitiveElementCount + indexMin + firstAddition - 1;
   3176 		const int			indexMax				= de::max(0, (ranged) ? (de::clamp<int>(spec.indexMax, 0, maxElementIndex)) : (maxElementIndex));
   3177 		float				coordScale				= getCoordScale(spec);
   3178 		float				colorScale				= getColorScale(spec);
   3179 
   3180 		rr::GenericVec4		nullAttribValue;
   3181 
   3182 		// Log info
   3183 		m_testCtx.getLog() << TestLog::Message << spec.getMultilineDesc() << TestLog::EndMessage;
   3184 		m_testCtx.getLog() << TestLog::Message << TestLog::EndMessage; // extra line for clarity
   3185 
   3186 		// Data
   3187 
   3188 		m_glArrayPack->clearArrays();
   3189 		m_rrArrayPack->clearArrays();
   3190 
   3191 		for (int attribNdx = 0; attribNdx < (int)spec.attribs.size(); attribNdx++)
   3192 		{
   3193 			DrawTestSpec::AttributeSpec attribSpec		= spec.attribs[attribNdx];
   3194 			const bool					isPositionAttr	= (attribNdx == 0) || (attribSpec.additionalPositionAttribute);
   3195 
   3196 			if (attribSpec.useDefaultAttribute)
   3197 			{
   3198 				const int		seed		= 10 * attribSpec.hash() + 100 * spec.hash() + attribNdx;
   3199 				rr::GenericVec4 attribValue = RandomArrayGenerator::generateAttributeValue(seed, attribSpec.inputType);
   3200 
   3201 				m_glArrayPack->newArray(DrawTestSpec::STORAGE_USER);
   3202 				m_rrArrayPack->newArray(DrawTestSpec::STORAGE_USER);
   3203 
   3204 				m_glArrayPack->getArray(attribNdx)->setupArray(false, 0, attribSpec.componentCount, attribSpec.inputType, attribSpec.outputType, false, 0, 0, attribValue, isPositionAttr, false);
   3205 				m_rrArrayPack->getArray(attribNdx)->setupArray(false, 0, attribSpec.componentCount, attribSpec.inputType, attribSpec.outputType, false, 0, 0, attribValue, isPositionAttr, false);
   3206 			}
   3207 			else
   3208 			{
   3209 				const int					seed					= attribSpec.hash() + 100 * spec.hash() + attribNdx;
   3210 				const size_t				elementSize				= attribSpec.componentCount * DrawTestSpec::inputTypeSize(attribSpec.inputType);
   3211 				const size_t				stride					= (attribSpec.stride == 0) ? (elementSize) : (attribSpec.stride);
   3212 				const size_t				evaluatedElementCount	= (instanced && attribSpec.instanceDivisor > 0) ? (spec.instanceCount / attribSpec.instanceDivisor + 1) : (elementCount);
   3213 				const size_t				referencedElementCount	= (ranged) ? (de::max<size_t>(evaluatedElementCount, spec.indexMax + 1)) : (evaluatedElementCount);
   3214 				const size_t				bufferSize				= attribSpec.offset + stride * (referencedElementCount - 1) + elementSize;
   3215 				const char*					data					= RandomArrayGenerator::generateArray(seed, (int)referencedElementCount, attribSpec.componentCount, attribSpec.offset, (int)stride, attribSpec.inputType);
   3216 
   3217 				try
   3218 				{
   3219 					m_glArrayPack->newArray(attribSpec.storage);
   3220 					m_rrArrayPack->newArray(attribSpec.storage);
   3221 
   3222 					m_glArrayPack->getArray(attribNdx)->data(DrawTestSpec::TARGET_ARRAY, bufferSize, data, attribSpec.usage);
   3223 					m_rrArrayPack->getArray(attribNdx)->data(DrawTestSpec::TARGET_ARRAY, bufferSize, data, attribSpec.usage);
   3224 
   3225 					m_glArrayPack->getArray(attribNdx)->setupArray(true, attribSpec.offset, attribSpec.componentCount, attribSpec.inputType, attribSpec.outputType, attribSpec.normalize, attribSpec.stride, attribSpec.instanceDivisor, nullAttribValue, isPositionAttr, attribSpec.bgraComponentOrder);
   3226 					m_rrArrayPack->getArray(attribNdx)->setupArray(true, attribSpec.offset, attribSpec.componentCount, attribSpec.inputType, attribSpec.outputType, attribSpec.normalize, attribSpec.stride, attribSpec.instanceDivisor, nullAttribValue, isPositionAttr, attribSpec.bgraComponentOrder);
   3227 
   3228 					delete [] data;
   3229 					data = NULL;
   3230 				}
   3231 				catch (...)
   3232 				{
   3233 					delete [] data;
   3234 					throw;
   3235 				}
   3236 			}
   3237 		}
   3238 
   3239 		// Shader program
   3240 		if (updateProgram)
   3241 		{
   3242 			m_glArrayPack->updateProgram();
   3243 			m_rrArrayPack->updateProgram();
   3244 		}
   3245 
   3246 		// Draw
   3247 		try
   3248 		{
   3249 			// indices
   3250 			if (indexed)
   3251 			{
   3252 				const int		seed				= spec.hash();
   3253 				const size_t	indexElementSize	= DrawTestSpec::indexTypeSize(spec.indexType);
   3254 				const size_t	indexArraySize		= spec.indexPointerOffset + indexElementSize * elementCount;
   3255 				const char*		indexArray			= RandomArrayGenerator::generateIndices(seed, (int)elementCount, spec.indexType, spec.indexPointerOffset, indexMin, indexMax, indexBase);
   3256 				const char*		indexPointerBase	= (spec.indexStorage == DrawTestSpec::STORAGE_USER) ? (indexArray) : ((char*)DE_NULL);
   3257 				const char*		indexPointer		= indexPointerBase + spec.indexPointerOffset;
   3258 
   3259 				de::UniquePtr<AttributeArray> glArray	(new AttributeArray(spec.indexStorage, *m_glesContext));
   3260 				de::UniquePtr<AttributeArray> rrArray	(new AttributeArray(spec.indexStorage, *m_refContext));
   3261 
   3262 				try
   3263 				{
   3264 					glArray->data(DrawTestSpec::TARGET_ELEMENT_ARRAY, indexArraySize, indexArray, DrawTestSpec::USAGE_STATIC_DRAW);
   3265 					rrArray->data(DrawTestSpec::TARGET_ELEMENT_ARRAY, indexArraySize, indexArray, DrawTestSpec::USAGE_STATIC_DRAW);
   3266 
   3267 					m_glArrayPack->render(spec.primitive, spec.drawMethod, 0, (int)primitiveElementCount, spec.indexType, indexPointer, spec.indexMin, spec.indexMax, spec.instanceCount, spec.indirectOffset, spec.baseVertex, coordScale, colorScale, glArray.get());
   3268 					m_rrArrayPack->render(spec.primitive, spec.drawMethod, 0, (int)primitiveElementCount, spec.indexType, indexPointer, spec.indexMin, spec.indexMax, spec.instanceCount, spec.indirectOffset, spec.baseVertex, coordScale, colorScale, rrArray.get());
   3269 
   3270 					delete [] indexArray;
   3271 					indexArray = NULL;
   3272 				}
   3273 				catch (...)
   3274 				{
   3275 					delete [] indexArray;
   3276 					throw;
   3277 				}
   3278 			}
   3279 			else
   3280 			{
   3281 				m_glArrayPack->render(spec.primitive, spec.drawMethod, spec.first, (int)primitiveElementCount, DrawTestSpec::INDEXTYPE_LAST, DE_NULL, 0, 0, spec.instanceCount, spec.indirectOffset, 0, coordScale, colorScale, DE_NULL);
   3282 				m_rrArrayPack->render(spec.primitive, spec.drawMethod, spec.first, (int)primitiveElementCount, DrawTestSpec::INDEXTYPE_LAST, DE_NULL, 0, 0, spec.instanceCount, spec.indirectOffset, 0, coordScale, colorScale, DE_NULL);
   3283 			}
   3284 		}
   3285 		catch (glu::Error& err)
   3286 		{
   3287 			// GL Errors are ok if the mode is not properly aligned
   3288 
   3289 			const DrawTestSpec::CompatibilityTestType ctype = spec.isCompatibilityTest();
   3290 
   3291 			m_testCtx.getLog() << TestLog::Message << "Got error: " << err.what() << TestLog::EndMessage;
   3292 
   3293 			if (ctype == DrawTestSpec::COMPATIBILITY_UNALIGNED_OFFSET)
   3294 				m_result.addResult(QP_TEST_RESULT_COMPATIBILITY_WARNING, "Failed to draw with unaligned buffers.");
   3295 			else if (ctype == DrawTestSpec::COMPATIBILITY_UNALIGNED_STRIDE)
   3296 				m_result.addResult(QP_TEST_RESULT_COMPATIBILITY_WARNING, "Failed to draw with unaligned stride.");
   3297 			else
   3298 				throw;
   3299 		}
   3300 	}
   3301 	else if (compareStep)
   3302 	{
   3303 		if (!compare(spec.primitive))
   3304 		{
   3305 			const DrawTestSpec::CompatibilityTestType ctype = spec.isCompatibilityTest();
   3306 
   3307 			if (ctype == DrawTestSpec::COMPATIBILITY_UNALIGNED_OFFSET)
   3308 				m_result.addResult(QP_TEST_RESULT_COMPATIBILITY_WARNING, "Failed to draw with unaligned buffers.");
   3309 			else if (ctype == DrawTestSpec::COMPATIBILITY_UNALIGNED_STRIDE)
   3310 				m_result.addResult(QP_TEST_RESULT_COMPATIBILITY_WARNING, "Failed to draw with unaligned stride.");
   3311 			else
   3312 				m_result.addResult(QP_TEST_RESULT_FAIL, "Image comparison failed.");
   3313 		}
   3314 	}
   3315 	else
   3316 	{
   3317 		DE_ASSERT(false);
   3318 		return STOP;
   3319 	}
   3320 
   3321 	m_result.setTestContextResult(m_testCtx);
   3322 
   3323 	m_iteration++;
   3324 	return iterateResult;
   3325 }
   3326 
   3327 static bool isBlack (const tcu::RGBA& c)
   3328 {
   3329 	// ignore alpha channel
   3330 	return c.getRed() == 0 && c.getGreen() == 0 && c.getBlue() == 0;
   3331 }
   3332 
   3333 static bool isEdgeTripletComponent (int c1, int c2, int c3, int renderTargetDifference)
   3334 {
   3335 	const int	roundingDifference	= 2 * renderTargetDifference; // src and dst pixels rounded to different directions
   3336 	const int	d1					= c2 - c1;
   3337 	const int	d2					= c3 - c2;
   3338 	const int	rampDiff			= de::abs(d2 - d1);
   3339 
   3340 	return rampDiff > roundingDifference;
   3341 }
   3342 
   3343 static bool isEdgeTriplet (const tcu::RGBA& c1, const tcu::RGBA& c2, const tcu::RGBA& c3, const tcu::IVec3& renderTargetThreshold)
   3344 {
   3345 	// black (background color) and non-black is always an edge
   3346 	{
   3347 		const bool b1 = isBlack(c1);
   3348 		const bool b2 = isBlack(c2);
   3349 		const bool b3 = isBlack(c3);
   3350 
   3351 		// both pixels with coverage and pixels without coverage
   3352 		if ((b1 && b2 && b3) == false && (b1 || b2 || b3) == true)
   3353 			return true;
   3354 		// all black
   3355 		if (b1 && b2 && b3)
   3356 			return false;
   3357 		// all with coverage
   3358 		DE_ASSERT(!b1 && !b2 && !b3);
   3359 	}
   3360 
   3361 	// Color is always linearly interpolated => component values change nearly linearly
   3362 	// in any constant direction on triangle hull. (df/dx ~= C).
   3363 
   3364 	// Edge detection (this function) is run against the reference image
   3365 	// => no dithering to worry about
   3366 
   3367 	return	isEdgeTripletComponent(c1.getRed(),		c2.getRed(),	c3.getRed(),	renderTargetThreshold.x())	||
   3368 			isEdgeTripletComponent(c1.getGreen(),	c2.getGreen(),	c3.getGreen(),	renderTargetThreshold.y())	||
   3369 			isEdgeTripletComponent(c1.getBlue(),	c2.getBlue(),	c3.getBlue(),	renderTargetThreshold.z());
   3370 }
   3371 
   3372 static bool pixelNearEdge (int x, int y, const tcu::Surface& ref, const tcu::IVec3& renderTargetThreshold)
   3373 {
   3374 	// should not be called for edge pixels
   3375 	DE_ASSERT(x >= 1 && x <= ref.getWidth()-2);
   3376 	DE_ASSERT(y >= 1 && y <= ref.getHeight()-2);
   3377 
   3378 	// horizontal
   3379 
   3380 	for (int dy = -1; dy < 2; ++dy)
   3381 	{
   3382 		const tcu::RGBA c1 = ref.getPixel(x-1, y+dy);
   3383 		const tcu::RGBA c2 = ref.getPixel(x,   y+dy);
   3384 		const tcu::RGBA c3 = ref.getPixel(x+1, y+dy);
   3385 		if (isEdgeTriplet(c1, c2, c3, renderTargetThreshold))
   3386 			return true;
   3387 	}
   3388 
   3389 	// vertical
   3390 
   3391 	for (int dx = -1; dx < 2; ++dx)
   3392 	{
   3393 		const tcu::RGBA c1 = ref.getPixel(x+dx, y-1);
   3394 		const tcu::RGBA c2 = ref.getPixel(x+dx, y);
   3395 		const tcu::RGBA c3 = ref.getPixel(x+dx, y+1);
   3396 		if (isEdgeTriplet(c1, c2, c3, renderTargetThreshold))
   3397 			return true;
   3398 	}
   3399 
   3400 	return false;
   3401 }
   3402 
   3403 static deUint32 getVisualizationGrayscaleColor (const tcu::RGBA& c)
   3404 {
   3405 	// make triangle coverage and error pixels obvious by converting coverage to grayscale
   3406 	if (isBlack(c))
   3407 		return 0;
   3408 	else
   3409 		return 50u + (deUint32)(c.getRed() + c.getBlue() + c.getGreen()) / 8u;
   3410 }
   3411 
   3412 static bool pixelNearLineIntersection (int x, int y, const tcu::Surface& target)
   3413 {
   3414 	// should not be called for edge pixels
   3415 	DE_ASSERT(x >= 1 && x <= target.getWidth()-2);
   3416 	DE_ASSERT(y >= 1 && y <= target.getHeight()-2);
   3417 
   3418 	int coveredPixels = 0;
   3419 
   3420 	for (int dy = -1; dy < 2; dy++)
   3421 	for (int dx = -1; dx < 2; dx++)
   3422 	{
   3423 		const bool targetCoverage = !isBlack(target.getPixel(x+dx, y+dy));
   3424 		if (targetCoverage)
   3425 		{
   3426 			++coveredPixels;
   3427 
   3428 			// A single thin line cannot have more than 3 covered pixels in a 3x3 area
   3429 			if (coveredPixels >= 4)
   3430 				return true;
   3431 		}
   3432 	}
   3433 
   3434 	return false;
   3435 }
   3436 
   3437 static inline bool colorsEqual (const tcu::RGBA& colorA, const tcu::RGBA& colorB, const tcu::IVec3& compareThreshold)
   3438 {
   3439 	enum
   3440 	{
   3441 		TCU_RGBA_RGB_MASK = tcu::RGBA::RED_MASK | tcu::RGBA::GREEN_MASK | tcu::RGBA::BLUE_MASK
   3442 	};
   3443 
   3444 	return tcu::compareThresholdMasked(colorA, colorB, tcu::RGBA(compareThreshold.x(), compareThreshold.y(), compareThreshold.z(), 0), TCU_RGBA_RGB_MASK);
   3445 }
   3446 
   3447 // search 3x3 are for matching color
   3448 static bool pixelNeighborhoodContainsColor (const tcu::Surface& target, int x, int y, const tcu::RGBA& color, const tcu::IVec3& compareThreshold)
   3449 {
   3450 	// should not be called for edge pixels
   3451 	DE_ASSERT(x >= 1 && x <= target.getWidth()-2);
   3452 	DE_ASSERT(y >= 1 && y <= target.getHeight()-2);
   3453 
   3454 	for (int dy = -1; dy < 2; dy++)
   3455 	for (int dx = -1; dx < 2; dx++)
   3456 	{
   3457 		const tcu::RGBA	targetCmpPixel = target.getPixel(x+dx, y+dy);
   3458 		if (colorsEqual(color, targetCmpPixel, compareThreshold))
   3459 			return true;
   3460 	}
   3461 
   3462 	return false;
   3463 }
   3464 
   3465 // search 3x3 are for matching coverage (coverage == (color != background color))
   3466 static bool pixelNeighborhoodContainsCoverage (const tcu::Surface& target, int x, int y, bool coverage)
   3467 {
   3468 	// should not be called for edge pixels
   3469 	DE_ASSERT(x >= 1 && x <= target.getWidth()-2);
   3470 	DE_ASSERT(y >= 1 && y <= target.getHeight()-2);
   3471 
   3472 	for (int dy = -1; dy < 2; dy++)
   3473 	for (int dx = -1; dx < 2; dx++)
   3474 	{
   3475 		const bool targetCmpCoverage = !isBlack(target.getPixel(x+dx, y+dy));
   3476 		if (targetCmpCoverage == coverage)
   3477 			return true;
   3478 	}
   3479 
   3480 	return false;
   3481 }
   3482 
   3483 static bool edgeRelaxedImageCompare (tcu::TestLog& log, const char* imageSetName, const char* imageSetDesc, const tcu::Surface& reference, const tcu::Surface& result, const tcu::IVec3& compareThreshold, const tcu::IVec3& renderTargetThreshold, int maxAllowedInvalidPixels)
   3484 {
   3485 	DE_ASSERT(result.getWidth() == reference.getWidth() && result.getHeight() == reference.getHeight());
   3486 
   3487 	const tcu::IVec4				green						(0, 255, 0, 255);
   3488 	const tcu::IVec4				red							(255, 0, 0, 255);
   3489 	const int						width						= reference.getWidth();
   3490 	const int						height						= reference.getHeight();
   3491 	tcu::TextureLevel				errorMask					(tcu::TextureFormat(tcu::TextureFormat::RGB, tcu::TextureFormat::UNORM_INT8), width, height);
   3492 	const tcu::PixelBufferAccess	errorAccess					= errorMask.getAccess();
   3493 	int								numFailingPixels			= 0;
   3494 
   3495 	// clear errormask edges which would otherwise be transparent
   3496 
   3497 	tcu::clear(tcu::getSubregion(errorAccess, 0,			0,			width,	1),			green);
   3498 	tcu::clear(tcu::getSubregion(errorAccess, 0,			height-1,	width,	1),			green);
   3499 	tcu::clear(tcu::getSubregion(errorAccess, 0,			0,			1,		height),	green);
   3500 	tcu::clear(tcu::getSubregion(errorAccess, width-1,		0,			1,		height),	green);
   3501 
   3502 	// skip edge pixels since coverage on edge cannot be verified
   3503 
   3504 	for (int y = 1; y < height - 1; ++y)
   3505 	for (int x = 1; x < width - 1; ++x)
   3506 	{
   3507 		const tcu::RGBA	refPixel			= reference.getPixel(x, y);
   3508 		const tcu::RGBA	screenPixel			= result.getPixel(x, y);
   3509 		const bool		directMatch			= colorsEqual(refPixel, screenPixel, compareThreshold);
   3510 		const bool		isOkReferencePixel	= directMatch || pixelNeighborhoodContainsColor(result, x, y, refPixel, compareThreshold);			// screen image has a matching pixel nearby (~= If something is drawn on reference, it must be drawn to screen too.)
   3511 		const bool		isOkScreenPixel		= directMatch || pixelNeighborhoodContainsColor(reference, x, y, screenPixel, compareThreshold);	// reference image has a matching pixel nearby (~= If something is drawn on screen, it must be drawn to reference too.)
   3512 
   3513 		if (isOkScreenPixel && isOkReferencePixel)
   3514 		{
   3515 			// pixel valid, write greenish pixels to make the result image easier to read
   3516 			const deUint32 grayscaleValue = getVisualizationGrayscaleColor(screenPixel);
   3517 			errorAccess.setPixel(tcu::UVec4(grayscaleValue, 255, grayscaleValue, 255), x, y);
   3518 		}
   3519 		else if (!pixelNearEdge(x, y, reference, renderTargetThreshold))
   3520 		{
   3521 			// non-edge pixel values must be within threshold of the reference values
   3522 			errorAccess.setPixel(red, x, y);
   3523 			++numFailingPixels;
   3524 		}
   3525 		else
   3526 		{
   3527 			// we are on/near an edge, verify only coverage (coverage == not background colored)
   3528 			const bool	referenceCoverage		= !isBlack(refPixel);
   3529 			const bool	screenCoverage			= !isBlack(screenPixel);
   3530 			const bool	isOkReferenceCoverage	= pixelNeighborhoodContainsCoverage(result, x, y, referenceCoverage);	// Check reference pixel against screen pixel
   3531 			const bool	isOkScreenCoverage		= pixelNeighborhoodContainsCoverage(reference, x, y, screenCoverage);	// Check screen pixels against reference pixel
   3532 
   3533 			if (isOkScreenCoverage && isOkReferenceCoverage)
   3534 			{
   3535 				// pixel valid, write greenish pixels to make the result image easier to read
   3536 				const deUint32 grayscaleValue = getVisualizationGrayscaleColor(screenPixel);
   3537 				errorAccess.setPixel(tcu::UVec4(grayscaleValue, 255, grayscaleValue, 255), x, y);
   3538 			}
   3539 			else
   3540 			{
   3541 				// coverage does not match
   3542 				errorAccess.setPixel(red, x, y);
   3543 				++numFailingPixels;
   3544 			}
   3545 		}
   3546 	}
   3547 
   3548 	log	<< TestLog::Message
   3549 		<< "Comparing images:\n"
   3550 		<< "\tallowed deviation in pixel positions = 1\n"
   3551 		<< "\tnumber of allowed invalid pixels = " << maxAllowedInvalidPixels << "\n"
   3552 		<< "\tnumber of invalid pixels = " << numFailingPixels
   3553 		<< TestLog::EndMessage;
   3554 
   3555 	if (numFailingPixels > maxAllowedInvalidPixels)
   3556 	{
   3557 		log << TestLog::Message
   3558 			<< "Image comparison failed. Color threshold = (" << compareThreshold.x() << ", " << compareThreshold.y() << ", " << compareThreshold.z() << ")"
   3559 			<< TestLog::EndMessage
   3560 			<< TestLog::ImageSet(imageSetName, imageSetDesc)
   3561 			<< TestLog::Image("Result",		"Result",		result)
   3562 			<< TestLog::Image("Reference",	"Reference",	reference)
   3563 			<< TestLog::Image("ErrorMask",	"Error mask",	errorMask)
   3564 			<< TestLog::EndImageSet;
   3565 
   3566 		return false;
   3567 	}
   3568 	else
   3569 	{
   3570 		log << TestLog::ImageSet(imageSetName, imageSetDesc)
   3571 			<< TestLog::Image("Result", "Result", result)
   3572 			<< TestLog::EndImageSet;
   3573 
   3574 		return true;
   3575 	}
   3576 }
   3577 
   3578 static bool intersectionRelaxedLineImageCompare (tcu::TestLog& log, const char* imageSetName, const char* imageSetDesc, const tcu::Surface& reference, const tcu::Surface& result, const tcu::IVec3& compareThreshold, int maxAllowedInvalidPixels)
   3579 {
   3580 	DE_ASSERT(result.getWidth() == reference.getWidth() && result.getHeight() == reference.getHeight());
   3581 
   3582 	const tcu::IVec4				green						(0, 255, 0, 255);
   3583 	const tcu::IVec4				red							(255, 0, 0, 255);
   3584 	const int						width						= reference.getWidth();
   3585 	const int						height						= reference.getHeight();
   3586 	tcu::TextureLevel				errorMask					(tcu::TextureFormat(tcu::TextureFormat::RGB, tcu::TextureFormat::UNORM_INT8), width, height);
   3587 	const tcu::PixelBufferAccess	errorAccess					= errorMask.getAccess();
   3588 	int								numFailingPixels			= 0;
   3589 
   3590 	// clear errormask edges which would otherwise be transparent
   3591 
   3592 	tcu::clear(tcu::getSubregion(errorAccess, 0,			0,			width,	1),			green);
   3593 	tcu::clear(tcu::getSubregion(errorAccess, 0,			height-1,	width,	1),			green);
   3594 	tcu::clear(tcu::getSubregion(errorAccess, 0,			0,			1,		height),	green);
   3595 	tcu::clear(tcu::getSubregion(errorAccess, width-1,		0,			1,		height),	green);
   3596 
   3597 	// skip edge pixels since coverage on edge cannot be verified
   3598 
   3599 	for (int y = 1; y < height - 1; ++y)
   3600 	for (int x = 1; x < width - 1; ++x)
   3601 	{
   3602 		const tcu::RGBA	refPixel			= reference.getPixel(x, y);
   3603 		const tcu::RGBA	screenPixel			= result.getPixel(x, y);
   3604 		const bool		directMatch			= colorsEqual(refPixel, screenPixel, compareThreshold);
   3605 		const bool		isOkScreenPixel		= directMatch || pixelNeighborhoodContainsColor(reference, x, y, screenPixel, compareThreshold);	// reference image has a matching pixel nearby (~= If something is drawn on screen, it must be drawn to reference too.)
   3606 		const bool		isOkReferencePixel	= directMatch || pixelNeighborhoodContainsColor(result, x, y, refPixel, compareThreshold);			// screen image has a matching pixel nearby (~= If something is drawn on reference, it must be drawn to screen too.)
   3607 
   3608 		if (isOkScreenPixel && isOkReferencePixel)
   3609 		{
   3610 			// pixel valid, write greenish pixels to make the result image easier to read
   3611 			const deUint32 grayscaleValue = getVisualizationGrayscaleColor(screenPixel);
   3612 			errorAccess.setPixel(tcu::UVec4(grayscaleValue, 255, grayscaleValue, 255), x, y);
   3613 		}
   3614 		else if (!pixelNearLineIntersection(x, y, reference) &&
   3615 				 !pixelNearLineIntersection(x, y, result))
   3616 		{
   3617 			// non-intersection pixel values must be within threshold of the reference values
   3618 			errorAccess.setPixel(red, x, y);
   3619 			++numFailingPixels;
   3620 		}
   3621 		else
   3622 		{
   3623 			// pixel is near a line intersection
   3624 			// we are on/near an edge, verify only coverage (coverage == not background colored)
   3625 			const bool	referenceCoverage		= !isBlack(refPixel);
   3626 			const bool	screenCoverage			= !isBlack(screenPixel);
   3627 			const bool	isOkScreenCoverage		= pixelNeighborhoodContainsCoverage(reference, x, y, screenCoverage);	// Check screen pixels against reference pixel
   3628 			const bool	isOkReferenceCoverage	= pixelNeighborhoodContainsCoverage(result, x, y, referenceCoverage);	// Check reference pixel against screen pixel
   3629 
   3630 			if (isOkScreenCoverage && isOkReferenceCoverage)
   3631 			{
   3632 				// pixel valid, write greenish pixels to make the result image easier to read
   3633 				const deUint32 grayscaleValue = getVisualizationGrayscaleColor(screenPixel);
   3634 				errorAccess.setPixel(tcu::UVec4(grayscaleValue, 255, grayscaleValue, 255), x, y);
   3635 			}
   3636 			else
   3637 			{
   3638 				// coverage does not match
   3639 				errorAccess.setPixel(red, x, y);
   3640 				++numFailingPixels;
   3641 			}
   3642 		}
   3643 	}
   3644 
   3645 	log	<< TestLog::Message
   3646 		<< "Comparing images:\n"
   3647 		<< "\tallowed deviation in pixel positions = 1\n"
   3648 		<< "\tnumber of allowed invalid pixels = " << maxAllowedInvalidPixels << "\n"
   3649 		<< "\tnumber of invalid pixels = " << numFailingPixels
   3650 		<< TestLog::EndMessage;
   3651 
   3652 	if (numFailingPixels > maxAllowedInvalidPixels)
   3653 	{
   3654 		log << TestLog::Message
   3655 			<< "Image comparison failed. Color threshold = (" << compareThreshold.x() << ", " << compareThreshold.y() << ", " << compareThreshold.z() << ")"
   3656 			<< TestLog::EndMessage
   3657 			<< TestLog::ImageSet(imageSetName, imageSetDesc)
   3658 			<< TestLog::Image("Result",		"Result",		result)
   3659 			<< TestLog::Image("Reference",	"Reference",	reference)
   3660 			<< TestLog::Image("ErrorMask",	"Error mask",	errorMask)
   3661 			<< TestLog::EndImageSet;
   3662 
   3663 		return false;
   3664 	}
   3665 	else
   3666 	{
   3667 		log << TestLog::ImageSet(imageSetName, imageSetDesc)
   3668 			<< TestLog::Image("Result", "Result", result)
   3669 			<< TestLog::EndImageSet;
   3670 
   3671 		return true;
   3672 	}
   3673 }
   3674 
   3675 bool DrawTest::compare (gls::DrawTestSpec::Primitive primitiveType)
   3676 {
   3677 	const tcu::Surface&	ref		= m_rrArrayPack->getSurface();
   3678 	const tcu::Surface&	screen	= m_glArrayPack->getSurface();
   3679 
   3680 	if (m_renderCtx.getRenderTarget().getNumSamples() > 1)
   3681 	{
   3682 		// \todo [mika] Improve compare when using multisampling
   3683 		m_testCtx.getLog() << tcu::TestLog::Message << "Warning: Comparision of result from multisample render targets are not as stricts as without multisampling. Might produce false positives!" << tcu::TestLog::EndMessage;
   3684 		return tcu::fuzzyCompare(m_testCtx.getLog(), "Compare Results", "Compare Results", ref.getAccess(), screen.getAccess(), 0.3f, tcu::COMPARE_LOG_RESULT);
   3685 	}
   3686 	else
   3687 	{
   3688 		const PrimitiveClass	primitiveClass							= getDrawPrimitiveClass(primitiveType);
   3689 		const int				maxAllowedInvalidPixelsWithPoints		= 0;	//!< points are unlikely to have overlapping fragments
   3690 		const int				maxAllowedInvalidPixelsWithLines		= 5;	//!< line are allowed to have a few bad pixels
   3691 		const int				maxAllowedInvalidPixelsWithTriangles	= 10;
   3692 
   3693 		switch (primitiveClass)
   3694 		{
   3695 			case PRIMITIVECLASS_POINT:
   3696 			{
   3697 				// Point are extremely unlikely to have overlapping regions, don't allow any no extra / missing pixels
   3698 				return tcu::intThresholdPositionDeviationErrorThresholdCompare(m_testCtx.getLog(),
   3699 																			   "CompareResult",
   3700 																			   "Result of rendering",
   3701 																			   ref.getAccess(),
   3702 																			   screen.getAccess(),
   3703 																			   tcu::UVec4(m_maxDiffRed, m_maxDiffGreen, m_maxDiffBlue, 256),
   3704 																			   tcu::IVec3(1, 1, 0),					//!< 3x3 search kernel
   3705 																			   true,								//!< relax comparison on the image boundary
   3706 																			   maxAllowedInvalidPixelsWithPoints,	//!< error threshold
   3707 																			   tcu::COMPARE_LOG_RESULT);
   3708 			}
   3709 
   3710 			case PRIMITIVECLASS_LINE:
   3711 			{
   3712 				// Lines can potentially have a large number of overlapping pixels. Pixel comparison may potentially produce
   3713 				// false negatives in such pixels if for example the pixel in question is overdrawn by another line in the
   3714 				// reference image but not in the resultin image. Relax comparison near line intersection points (areas) and
   3715 				// compare only coverage, not color, in such pixels
   3716 				return intersectionRelaxedLineImageCompare(m_testCtx.getLog(),
   3717 														   "CompareResult",
   3718 														   "Result of rendering",
   3719 														   ref,
   3720 														   screen,
   3721 														   tcu::IVec3(m_maxDiffRed, m_maxDiffGreen, m_maxDiffBlue),
   3722 														   maxAllowedInvalidPixelsWithLines);
   3723 			}
   3724 
   3725 			case PRIMITIVECLASS_TRIANGLE:
   3726 			{
   3727 				// Triangles are likely to partially or fully overlap. Pixel difference comparison is fragile in pixels
   3728 				// where there could be potential overlapping since the  pixels might be covered by one triangle in the
   3729 				// reference image and by the other in the result image. Relax comparsion near primitive edges and
   3730 				// compare only coverage, not color, in such pixels.
   3731 				const tcu::IVec3	renderTargetThreshold					= m_renderCtx.getRenderTarget().getPixelFormat().getColorThreshold().toIVec().xyz();
   3732 
   3733 				return edgeRelaxedImageCompare(m_testCtx.getLog(),
   3734 											   "CompareResult",
   3735 											   "Result of rendering",
   3736 											   ref,
   3737 											   screen,
   3738 											   tcu::IVec3(m_maxDiffRed, m_maxDiffGreen, m_maxDiffBlue),
   3739 											   renderTargetThreshold,
   3740 											   maxAllowedInvalidPixelsWithTriangles);
   3741 			}
   3742 
   3743 			default:
   3744 				DE_ASSERT(false);
   3745 				return false;
   3746 		}
   3747 	}
   3748 }
   3749 
   3750 float DrawTest::getCoordScale (const DrawTestSpec& spec) const
   3751 {
   3752 	float maxValue = 1.0f;
   3753 
   3754 	for (int arrayNdx = 0; arrayNdx < (int)spec.attribs.size(); arrayNdx++)
   3755 	{
   3756 		DrawTestSpec::AttributeSpec attribSpec		= spec.attribs[arrayNdx];
   3757 		const bool					isPositionAttr	= (arrayNdx == 0) || (attribSpec.additionalPositionAttribute);
   3758 		float						attrMaxValue	= 0;
   3759 
   3760 		if (!isPositionAttr)
   3761 			continue;
   3762 
   3763 		if (attribSpec.inputType == DrawTestSpec::INPUTTYPE_UNSIGNED_INT_2_10_10_10)
   3764 		{
   3765 			if (attribSpec.normalize)
   3766 				attrMaxValue += 1.0f;
   3767 			else
   3768 				attrMaxValue += 1024.0f;
   3769 		}
   3770 		else if (attribSpec.inputType == DrawTestSpec::INPUTTYPE_INT_2_10_10_10)
   3771 		{
   3772 			if (attribSpec.normalize)
   3773 				attrMaxValue += 1.0f;
   3774 			else
   3775 				attrMaxValue += 512.0f;
   3776 		}
   3777 		else
   3778 		{
   3779 			const float max = GLValue::getMaxValue(attribSpec.inputType).toFloat();
   3780 
   3781 			attrMaxValue += (attribSpec.normalize && !inputTypeIsFloatType(attribSpec.inputType)) ? (1.0f) : (max * 1.1f);
   3782 		}
   3783 
   3784 		if (attribSpec.outputType == DrawTestSpec::OUTPUTTYPE_VEC3 || attribSpec.outputType == DrawTestSpec::OUTPUTTYPE_VEC4
   3785 			|| attribSpec.outputType == DrawTestSpec::OUTPUTTYPE_IVEC3 || attribSpec.outputType == DrawTestSpec::OUTPUTTYPE_IVEC4
   3786 			|| attribSpec.outputType == DrawTestSpec::OUTPUTTYPE_UVEC3 || attribSpec.outputType == DrawTestSpec::OUTPUTTYPE_UVEC4)
   3787 				attrMaxValue *= 2;
   3788 
   3789 		maxValue += attrMaxValue;
   3790 	}
   3791 
   3792 	return 1.0f / maxValue;
   3793 }
   3794 
   3795 float DrawTest::getColorScale (const DrawTestSpec& spec) const
   3796 {
   3797 	float colorScale = 1.0f;
   3798 
   3799 	for (int arrayNdx = 1; arrayNdx < (int)spec.attribs.size(); arrayNdx++)
   3800 	{
   3801 		DrawTestSpec::AttributeSpec attribSpec		= spec.attribs[arrayNdx];
   3802 		const bool					isPositionAttr	= (arrayNdx == 0) || (attribSpec.additionalPositionAttribute);
   3803 
   3804 		if (isPositionAttr)
   3805 			continue;
   3806 
   3807 		if (attribSpec.inputType == DrawTestSpec::INPUTTYPE_UNSIGNED_INT_2_10_10_10)
   3808 		{
   3809 			if (!attribSpec.normalize)
   3810 				colorScale *= 1.0f / 1024.0f;
   3811 		}
   3812 		else if (attribSpec.inputType == DrawTestSpec::INPUTTYPE_INT_2_10_10_10)
   3813 		{
   3814 			if (!attribSpec.normalize)
   3815 				colorScale *= 1.0f / 512.0f;
   3816 		}
   3817 		else
   3818 		{
   3819 			const float max = GLValue::getMaxValue(attribSpec.inputType).toFloat();
   3820 
   3821 			colorScale *= (attribSpec.normalize && !inputTypeIsFloatType(attribSpec.inputType) ? 1.0f : float(1.0 / double(max)));
   3822 			if (attribSpec.outputType == DrawTestSpec::OUTPUTTYPE_VEC4 ||
   3823 				attribSpec.outputType == DrawTestSpec::OUTPUTTYPE_UVEC4 ||
   3824 				attribSpec.outputType == DrawTestSpec::OUTPUTTYPE_IVEC4)
   3825 				colorScale *= (attribSpec.normalize && !inputTypeIsFloatType(attribSpec.inputType) ? 1.0f : float(1.0 / double(max)));
   3826 		}
   3827 	}
   3828 
   3829 	return colorScale;
   3830 }
   3831 
   3832 } // gls
   3833 } // deqp
   3834