modules/glshared/glsShaderPerformanceMeasurer.cpp - third_party/vulkan-cts - Git at Google

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

 #include "glsShaderPerformanceMeasurer.hpp"
 #include "gluDefs.hpp"
 #include "tcuTestLog.hpp"
 #include "tcuRenderTarget.hpp"
 #include "deStringUtil.hpp"
 #include "deMath.h"
 #include "deClock.h"

 #include "glwFunctions.hpp"
 #include "glwEnums.hpp"

 #include <algorithm>

 using tcu::Vec4;
 using std::string;
 using std::vector;
 using tcu::TestLog;
 using namespace glw; // GL types

 namespace deqp
 {
 namespace gls
 {

 static inline float triangleInterpolate (float v0, float v1, float v2, float x, float y)
 {
 	return v0 + (v2-v0)*x + (v1-v0)*y;
 }

 static inline float triQuadInterpolate (float x, float y, const tcu::Vec4& quad)
 {
 	// \note Top left fill rule.
 	if (x + y < 1.0f)
 		return triangleInterpolate(quad.x(), quad.y(), quad.z(), x, y);
 	else
 		return triangleInterpolate(quad.w(), quad.z(), quad.y(), 1.0f-x, 1.0f-y);
 }

 static inline int getNumVertices (int gridSizeX, int gridSizeY)
 {
 	return (gridSizeX + 1) * (gridSizeY + 1);
 }

 static inline int getNumIndices (int gridSizeX, int gridSizeY)
 {
 	return gridSizeX*gridSizeY*6;
 }

 static inline deUint16 getVtxIndex (int x, int y, int gridSizeX)
 {
 	return (deUint16)(y*(gridSizeX+1) + x);
 }

 static void generateVertices (std::vector<float>& dst, int gridSizeX, int gridSizeY, const AttribSpec& spec)
 {
 	const int numComponents = 4;

 	DE_ASSERT((gridSizeX + 1)*(gridSizeY + 1) <= (1<<16)); // Must fit into 16-bit indices.
 	DE_ASSERT(gridSizeX >= 1 && gridSizeY >= 1);
 	dst.resize((gridSizeX + 1) * (gridSizeY + 1) * 4);

 	for (int y = 0; y <= gridSizeY; y++)
 	{
 		for (int x = 0; x <= gridSizeX; x++)
 		{
 			float	xf	= (float)x / (float)gridSizeX;
 			float	yf	= (float)y / (float)gridSizeY;

 			for (int compNdx = 0; compNdx < numComponents; compNdx++)
 				dst[getVtxIndex(x, y, gridSizeX)*numComponents + compNdx] = triQuadInterpolate(xf, yf, tcu::Vec4(spec.p00[compNdx], spec.p01[compNdx], spec.p10[compNdx], spec.p11[compNdx]));
 		}
 	}
 }

 static void generateIndices (std::vector<deUint16>& dst, int gridSizeX, int gridSizeY)
 {
 	const int	numIndicesPerQuad	= 6;
 	int			numIndices			= gridSizeX * gridSizeY * numIndicesPerQuad;
 	dst.resize(numIndices);

 	for (int y = 0; y < gridSizeY; y++)
 	{
 		for (int x = 0; x < gridSizeX; x++)
 		{
 			int quadNdx = y*gridSizeX + x;

 			dst[quadNdx*numIndicesPerQuad + 0] = getVtxIndex(x+0, y+0, gridSizeX);
 			dst[quadNdx*numIndicesPerQuad + 1] = getVtxIndex(x+1, y+0, gridSizeX);
 			dst[quadNdx*numIndicesPerQuad + 2] = getVtxIndex(x+0, y+1, gridSizeX);

 			dst[quadNdx*numIndicesPerQuad + 3] = getVtxIndex(x+0, y+1, gridSizeX);
 			dst[quadNdx*numIndicesPerQuad + 4] = getVtxIndex(x+1, y+0, gridSizeX);
 			dst[quadNdx*numIndicesPerQuad + 5] = getVtxIndex(x+1, y+1, gridSizeX);
 		}
 	}
 }

 ShaderPerformanceMeasurer::ShaderPerformanceMeasurer (const glu::RenderContext& renderCtx, PerfCaseType measureType)
 	: m_renderCtx		(renderCtx)
 	, m_gridSizeX		(measureType == CASETYPE_FRAGMENT	? 1		: 255)
 	, m_gridSizeY		(measureType == CASETYPE_FRAGMENT	? 1		: 255)
 	, m_viewportWidth	(measureType == CASETYPE_VERTEX		? 32	: renderCtx.getRenderTarget().getWidth())
 	, m_viewportHeight	(measureType == CASETYPE_VERTEX		? 32	: renderCtx.getRenderTarget().getHeight())
 	, m_state			(STATE_UNINITIALIZED)
 	, m_result			(-1.0f, -1.0f)
 	, m_indexBuffer		(0)
 	, m_vao				(0)
 {
 }

 void ShaderPerformanceMeasurer::logParameters (TestLog& log) const
 {
 	log << TestLog::Message << "Grid size: " << m_gridSizeX << "x" << m_gridSizeY << TestLog::EndMessage
 		<< TestLog::Message << "Viewport: " << m_viewportWidth << "x" << m_viewportHeight << TestLog::EndMessage;
 }

 void ShaderPerformanceMeasurer::init (deUint32 program, const vector<AttribSpec>& attributes, int calibratorInitialNumCalls)
 {
 	DE_ASSERT(m_state == STATE_UNINITIALIZED);

 	const glw::Functions&	gl		= m_renderCtx.getFunctions();
 	const bool				useVAO	= glu::isContextTypeGLCore(m_renderCtx.getType());

 	if (useVAO)
 	{
 		DE_ASSERT(!m_vao);
 		gl.genVertexArrays(1, &m_vao);
 		gl.bindVertexArray(m_vao);
 		GLU_EXPECT_NO_ERROR(gl.getError(), "Create VAO");
 	}

 	// Validate that we have sane grid and viewport setup.

 	DE_ASSERT(de::inBounds(m_gridSizeX, 1, 256) && de::inBounds(m_gridSizeY, 1, 256));

 	{
 		bool widthTooSmall		= m_renderCtx.getRenderTarget().getWidth() < m_viewportWidth;
 		bool heightTooSmall		= m_renderCtx.getRenderTarget().getHeight() < m_viewportHeight;

 		if (widthTooSmall || heightTooSmall)
 			throw tcu::NotSupportedError("Render target too small (" +
 											 (widthTooSmall  ?									   "width must be at least "  + de::toString(m_viewportWidth)  : "") +
 											 (heightTooSmall ? string(widthTooSmall ? ", " : "") + "height must be at least " + de::toString(m_viewportHeight) : "") +
 											 ")");
 	}

 	TCU_CHECK_INTERNAL(de::inRange(m_viewportWidth,		1, m_renderCtx.getRenderTarget().getWidth()) &&
 					   de::inRange(m_viewportHeight,	1, m_renderCtx.getRenderTarget().getHeight()));

 	// Insert a_position to attributes.
 	m_attributes = attributes;
 	m_attributes.push_back(AttribSpec("a_position",
 									  Vec4(-1.0f, -1.0f, 0.0f, 1.0f),
 									  Vec4( 1.0f, -1.0f, 0.0f, 1.0f),
 									  Vec4(-1.0f,  1.0f, 0.0f, 1.0f),
 									  Vec4( 1.0f,  1.0f, 0.0f, 1.0f)));

 	// Generate indices.
 	{
 		std::vector<deUint16> indices;
 		generateIndices(indices, m_gridSizeX, m_gridSizeY);

 		gl.genBuffers(1, &m_indexBuffer);
 		gl.bindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_indexBuffer);
 		gl.bufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)(indices.size()*sizeof(deUint16)), &indices[0], GL_STATIC_DRAW);

 		GLU_EXPECT_NO_ERROR(gl.getError(), "Upload index data");
 	}

 	// Generate vertices.
 	m_attribBuffers.resize(m_attributes.size(), 0);
 	gl.genBuffers((GLsizei)m_attribBuffers.size(), &m_attribBuffers[0]);

 	for (int attribNdx = 0; attribNdx < (int)m_attributes.size(); attribNdx++)
 	{
 		std::vector<float> vertices;
 		generateVertices(vertices, m_gridSizeX, m_gridSizeY, m_attributes[attribNdx]);

 		gl.bindBuffer(GL_ARRAY_BUFFER, m_attribBuffers[attribNdx]);
 		gl.bufferData(GL_ARRAY_BUFFER, (GLsizeiptr)(vertices.size()*sizeof(float)), &vertices[0], GL_STATIC_DRAW);
 	}

 	GLU_EXPECT_NO_ERROR(gl.getError(), "Upload vertex data");

 	// Setup attribute bindings.
 	for (int attribNdx = 0; attribNdx < (int)m_attributes.size(); attribNdx++)
 	{
 		int location = gl.getAttribLocation(program, m_attributes[attribNdx].name.c_str());

 		if (location >= 0)
 		{
 			gl.enableVertexAttribArray(location);
 			gl.bindBuffer(GL_ARRAY_BUFFER, m_attribBuffers[attribNdx]);
 			gl.vertexAttribPointer(location, 4, GL_FLOAT, GL_FALSE, 0, DE_NULL);
 		}

 		GLU_EXPECT_NO_ERROR(gl.getError(), "Setup vertex attribute state");
 	}

 	gl.useProgram(program);
 	GLU_EXPECT_NO_ERROR(gl.getError(), "glUseProgram()");

 	m_state = STATE_MEASURING;
 	m_isFirstIteration = true;

 	m_calibrator.clear(CalibratorParameters(calibratorInitialNumCalls, 10 /* calibrate iteration frames */, 2000.0f /* calibrate iteration shortcut threshold (ms) */, 16 /* max calibrate iterations */,
 											1000.0f/30.0f /* frame time (ms) */, 1000.0f/60.0f /* frame time cap (ms) */, 1000.0f /* target measure duration (ms) */));
 }

 void ShaderPerformanceMeasurer::deinit (void)
 {
 	const glw::Functions& gl = m_renderCtx.getFunctions();

 	if (m_indexBuffer)
 	{
 		gl.deleteBuffers(1, &m_indexBuffer);
 		m_indexBuffer = 0;
 	}

 	if (m_vao)
 	{
 		gl.deleteVertexArrays(1, &m_vao);
 		m_vao = 0;
 	}

 	if (!m_attribBuffers.empty())
 	{
 		gl.deleteBuffers((GLsizei)m_attribBuffers.size(), &m_attribBuffers[0]);
 		m_attribBuffers.clear();
 	}

 	m_state = STATE_UNINITIALIZED;
 }

 void ShaderPerformanceMeasurer::render (int numDrawCalls)
 {
 	const glw::Functions&	gl			= m_renderCtx.getFunctions();
 	GLsizei					numIndices	= (GLsizei)getNumIndices(m_gridSizeX, m_gridSizeY);

 	gl.viewport(0, 0, m_viewportWidth, m_viewportHeight);

 	for (int callNdx = 0; callNdx < numDrawCalls; callNdx++)
 		gl.drawElements(GL_TRIANGLES, numIndices, GL_UNSIGNED_SHORT, DE_NULL);
 }

 void ShaderPerformanceMeasurer::iterate (void)
 {
 	DE_ASSERT(m_state == STATE_MEASURING);

 	deUint64 renderStartTime = deGetMicroseconds();
 	render(m_calibrator.getCallCount()); // Always render. This gives more stable performance behavior.

 	TheilSenCalibrator::State calibratorState = m_calibrator.getState();

 	if (calibratorState == TheilSenCalibrator::STATE_RECOMPUTE_PARAMS)
 	{
 		m_calibrator.recomputeParameters();

 		m_isFirstIteration = true;
 		m_prevRenderStartTime = renderStartTime;
 	}
 	else if (calibratorState == TheilSenCalibrator::STATE_MEASURE)
 	{
 		if (!m_isFirstIteration)
 			m_calibrator.recordIteration(renderStartTime - m_prevRenderStartTime);

 		m_isFirstIteration = false;
 		m_prevRenderStartTime = renderStartTime;
 	}
 	else
 	{
 		DE_ASSERT(calibratorState == TheilSenCalibrator::STATE_FINISHED);

 		GLU_EXPECT_NO_ERROR(m_renderCtx.getFunctions().getError(), "End of rendering");

 		const MeasureState& measureState = m_calibrator.getMeasureState();

 		// Compute result.
 		deUint64	totalTime			= measureState.getTotalTime();
 		int			numFrames			= (int)measureState.frameTimes.size();
 		deInt64		numQuadGrids		= measureState.numDrawCalls * numFrames;
 		deInt64		numPixels			= (deInt64)m_viewportWidth * (deInt64)m_viewportHeight * numQuadGrids;
 		deInt64		numVertices			= (deInt64)getNumVertices(m_gridSizeX, m_gridSizeY) * numQuadGrids;
 		double		mfragPerSecond		= (double)numPixels / (double)totalTime;
 		double		mvertPerSecond		= (double)numVertices / (double)totalTime;

 		m_result = Result((float)mvertPerSecond, (float)mfragPerSecond);
 		m_state = STATE_FINISHED;
 	}
 }

 void ShaderPerformanceMeasurer::logMeasurementInfo (TestLog& log) const
 {
 	DE_ASSERT(m_state == STATE_FINISHED);

 	const MeasureState& measureState(m_calibrator.getMeasureState());

 	// Compute totals.
 	deUint64	totalTime			= measureState.getTotalTime();
 	int			numFrames			= (int)measureState.frameTimes.size();
 	deInt64		numQuadGrids		= measureState.numDrawCalls * numFrames;
 	deInt64		numPixels			= (deInt64)m_viewportWidth * (deInt64)m_viewportHeight * numQuadGrids;
 	deInt64		numVertices			= (deInt64)getNumVertices(m_gridSizeX, m_gridSizeY) * numQuadGrids;
 	double		mfragPerSecond		= (double)numPixels / (double)totalTime;
 	double		mvertPerSecond		= (double)numVertices / (double)totalTime;
 	double		framesPerSecond		= (double)numFrames / ((double)totalTime / 1000000.0);

 	logCalibrationInfo(log, m_calibrator);

 	log << TestLog::Float("FramesPerSecond",		"Frames per second in measurement",	"Frames/s",				QP_KEY_TAG_PERFORMANCE,	(float)framesPerSecond)
 		<< TestLog::Float("FragmentsPerVertices",	"Vertex-fragment ratio",			"Fragments/Vertices",	QP_KEY_TAG_NONE,		(float)numPixels / (float)numVertices)
 		<< TestLog::Float("FragmentPerf",			"Fragment performance",				"MPix/s",				QP_KEY_TAG_PERFORMANCE, (float)mfragPerSecond)
 		<< TestLog::Float("VertexPerf",				"Vertex performance",				"MVert/s",				QP_KEY_TAG_PERFORMANCE, (float)mvertPerSecond);
 }

 void ShaderPerformanceMeasurer::setGridSize (int gridW, int gridH)
 {
 	DE_ASSERT(m_state == STATE_UNINITIALIZED);
 	DE_ASSERT(de::inBounds(gridW, 1, 256) && de::inBounds(gridH, 1, 256));
 	m_gridSizeX		= gridW;
 	m_gridSizeY		= gridH;
 }

 void ShaderPerformanceMeasurer::setViewportSize (int width, int height)
 {
 	DE_ASSERT(m_state == STATE_UNINITIALIZED);
 	DE_ASSERT(de::inRange(width,	1, m_renderCtx.getRenderTarget().getWidth()) &&
 			  de::inRange(height,	1, m_renderCtx.getRenderTarget().getHeight()));
 	m_viewportWidth		= width;
 	m_viewportHeight	= height;
 }

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

	#include "glsShaderPerformanceMeasurer.hpp"
	#include "gluDefs.hpp"
	#include "tcuTestLog.hpp"
	#include "tcuRenderTarget.hpp"
	#include "deStringUtil.hpp"
	#include "deMath.h"
	#include "deClock.h"

	#include "glwFunctions.hpp"
	#include "glwEnums.hpp"

	#include <algorithm>

	using tcu::Vec4;
	using std::string;
	using std::vector;
	using tcu::TestLog;
	using namespace glw; // GL types

	namespace deqp
	{
	namespace gls
	{

	static inline float triangleInterpolate (float v0, float v1, float v2, float x, float y)
	{
	return v0 + (v2-v0)x + (v1-v0)y;
	}

	static inline float triQuadInterpolate (float x, float y, const tcu::Vec4& quad)
	{
	// \note Top left fill rule.
	if (x + y < 1.0f)
	return triangleInterpolate(quad.x(), quad.y(), quad.z(), x, y);
	else
	return triangleInterpolate(quad.w(), quad.z(), quad.y(), 1.0f-x, 1.0f-y);
	}

	static inline int getNumVertices (int gridSizeX, int gridSizeY)
	{
	return (gridSizeX + 1) * (gridSizeY + 1);
	}

	static inline int getNumIndices (int gridSizeX, int gridSizeY)
	{
	return gridSizeXgridSizeY6;
	}

	static inline deUint16 getVtxIndex (int x, int y, int gridSizeX)
	{
	return (deUint16)(y*(gridSizeX+1) + x);
	}

	static void generateVertices (std::vector<float>& dst, int gridSizeX, int gridSizeY, const AttribSpec& spec)
	{
	const int numComponents = 4;

	DE_ASSERT((gridSizeX + 1)*(gridSizeY + 1) <= (1<<16)); // Must fit into 16-bit indices.
	DE_ASSERT(gridSizeX >= 1 && gridSizeY >= 1);
	dst.resize((gridSizeX + 1) * (gridSizeY + 1) * 4);

	for (int y = 0; y <= gridSizeY; y++)
	{
	for (int x = 0; x <= gridSizeX; x++)
	{
	float xf = (float)x / (float)gridSizeX;
	float yf = (float)y / (float)gridSizeY;

	for (int compNdx = 0; compNdx < numComponents; compNdx++)
	dst[getVtxIndex(x, y, gridSizeX)*numComponents + compNdx] = triQuadInterpolate(xf, yf, tcu::Vec4(spec.p00[compNdx], spec.p01[compNdx], spec.p10[compNdx], spec.p11[compNdx]));
	}
	}
	}

	static void generateIndices (std::vector<deUint16>& dst, int gridSizeX, int gridSizeY)
	{
	const int numIndicesPerQuad = 6;
	int numIndices = gridSizeX * gridSizeY * numIndicesPerQuad;
	dst.resize(numIndices);

	for (int y = 0; y < gridSizeY; y++)
	{
	for (int x = 0; x < gridSizeX; x++)
	{
	int quadNdx = y*gridSizeX + x;

	dst[quadNdx*numIndicesPerQuad + 0] = getVtxIndex(x+0, y+0, gridSizeX);
	dst[quadNdx*numIndicesPerQuad + 1] = getVtxIndex(x+1, y+0, gridSizeX);
	dst[quadNdx*numIndicesPerQuad + 2] = getVtxIndex(x+0, y+1, gridSizeX);

	dst[quadNdx*numIndicesPerQuad + 3] = getVtxIndex(x+0, y+1, gridSizeX);
	dst[quadNdx*numIndicesPerQuad + 4] = getVtxIndex(x+1, y+0, gridSizeX);
	dst[quadNdx*numIndicesPerQuad + 5] = getVtxIndex(x+1, y+1, gridSizeX);
	}
	}
	}

	ShaderPerformanceMeasurer::ShaderPerformanceMeasurer (const glu::RenderContext& renderCtx, PerfCaseType measureType)
	: m_renderCtx (renderCtx)
	, m_gridSizeX (measureType == CASETYPE_FRAGMENT ? 1 : 255)
	, m_gridSizeY (measureType == CASETYPE_FRAGMENT ? 1 : 255)
	, m_viewportWidth (measureType == CASETYPE_VERTEX ? 32 : renderCtx.getRenderTarget().getWidth())
	, m_viewportHeight (measureType == CASETYPE_VERTEX ? 32 : renderCtx.getRenderTarget().getHeight())
	, m_state (STATE_UNINITIALIZED)
	, m_result (-1.0f, -1.0f)
	, m_indexBuffer (0)
	, m_vao (0)
	{
	}

	void ShaderPerformanceMeasurer::logParameters (TestLog& log) const
	{
	log << TestLog::Message << "Grid size: " << m_gridSizeX << "x" << m_gridSizeY << TestLog::EndMessage
	<< TestLog::Message << "Viewport: " << m_viewportWidth << "x" << m_viewportHeight << TestLog::EndMessage;
	}

	void ShaderPerformanceMeasurer::init (deUint32 program, const vector<AttribSpec>& attributes, int calibratorInitialNumCalls)
	{
	DE_ASSERT(m_state == STATE_UNINITIALIZED);

	const glw::Functions& gl = m_renderCtx.getFunctions();
	const bool useVAO = glu::isContextTypeGLCore(m_renderCtx.getType());

	if (useVAO)
	{
	DE_ASSERT(!m_vao);
	gl.genVertexArrays(1, &m_vao);
	gl.bindVertexArray(m_vao);
	GLU_EXPECT_NO_ERROR(gl.getError(), "Create VAO");
	}

	// Validate that we have sane grid and viewport setup.

	DE_ASSERT(de::inBounds(m_gridSizeX, 1, 256) && de::inBounds(m_gridSizeY, 1, 256));

	{
	bool widthTooSmall = m_renderCtx.getRenderTarget().getWidth() < m_viewportWidth;
	bool heightTooSmall = m_renderCtx.getRenderTarget().getHeight() < m_viewportHeight;

	if (widthTooSmall \|\| heightTooSmall)
	throw tcu::NotSupportedError("Render target too small (" +
	(widthTooSmall ? "width must be at least " + de::toString(m_viewportWidth) : "") +
	(heightTooSmall ? string(widthTooSmall ? ", " : "") + "height must be at least " + de::toString(m_viewportHeight) : "") +
	")");
	}

	TCU_CHECK_INTERNAL(de::inRange(m_viewportWidth, 1, m_renderCtx.getRenderTarget().getWidth()) &&
	de::inRange(m_viewportHeight, 1, m_renderCtx.getRenderTarget().getHeight()));

	// Insert a_position to attributes.
	m_attributes = attributes;
	m_attributes.push_back(AttribSpec("a_position",
	Vec4(-1.0f, -1.0f, 0.0f, 1.0f),
	Vec4( 1.0f, -1.0f, 0.0f, 1.0f),
	Vec4(-1.0f, 1.0f, 0.0f, 1.0f),
	Vec4( 1.0f, 1.0f, 0.0f, 1.0f)));

	// Generate indices.
	{
	std::vector<deUint16> indices;
	generateIndices(indices, m_gridSizeX, m_gridSizeY);

	gl.genBuffers(1, &m_indexBuffer);
	gl.bindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_indexBuffer);
	gl.bufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)(indices.size()*sizeof(deUint16)), &indices[0], GL_STATIC_DRAW);

	GLU_EXPECT_NO_ERROR(gl.getError(), "Upload index data");
	}

	// Generate vertices.
	m_attribBuffers.resize(m_attributes.size(), 0);
	gl.genBuffers((GLsizei)m_attribBuffers.size(), &m_attribBuffers[0]);

	for (int attribNdx = 0; attribNdx < (int)m_attributes.size(); attribNdx++)
	{
	std::vector<float> vertices;
	generateVertices(vertices, m_gridSizeX, m_gridSizeY, m_attributes[attribNdx]);

	gl.bindBuffer(GL_ARRAY_BUFFER, m_attribBuffers[attribNdx]);
	gl.bufferData(GL_ARRAY_BUFFER, (GLsizeiptr)(vertices.size()*sizeof(float)), &vertices[0], GL_STATIC_DRAW);
	}

	GLU_EXPECT_NO_ERROR(gl.getError(), "Upload vertex data");

	// Setup attribute bindings.
	for (int attribNdx = 0; attribNdx < (int)m_attributes.size(); attribNdx++)
	{
	int location = gl.getAttribLocation(program, m_attributes[attribNdx].name.c_str());

	if (location >= 0)
	{
	gl.enableVertexAttribArray(location);
	gl.bindBuffer(GL_ARRAY_BUFFER, m_attribBuffers[attribNdx]);
	gl.vertexAttribPointer(location, 4, GL_FLOAT, GL_FALSE, 0, DE_NULL);
	}

	GLU_EXPECT_NO_ERROR(gl.getError(), "Setup vertex attribute state");
	}

	gl.useProgram(program);
	GLU_EXPECT_NO_ERROR(gl.getError(), "glUseProgram()");

	m_state = STATE_MEASURING;
	m_isFirstIteration = true;

	m_calibrator.clear(CalibratorParameters(calibratorInitialNumCalls, 10 /* calibrate iteration frames /, 2000.0f / calibrate iteration shortcut threshold (ms) /, 16 / max calibrate iterations */,
	1000.0f/30.0f /* frame time (ms) /, 1000.0f/60.0f / frame time cap (ms) /, 1000.0f / target measure duration (ms) */));
	}

	void ShaderPerformanceMeasurer::deinit (void)
	{
	const glw::Functions& gl = m_renderCtx.getFunctions();

	if (m_indexBuffer)
	{
	gl.deleteBuffers(1, &m_indexBuffer);
	m_indexBuffer = 0;
	}

	if (m_vao)
	{
	gl.deleteVertexArrays(1, &m_vao);
	m_vao = 0;
	}

	if (!m_attribBuffers.empty())
	{
	gl.deleteBuffers((GLsizei)m_attribBuffers.size(), &m_attribBuffers[0]);
	m_attribBuffers.clear();
	}

	m_state = STATE_UNINITIALIZED;
	}

	void ShaderPerformanceMeasurer::render (int numDrawCalls)
	{
	const glw::Functions& gl = m_renderCtx.getFunctions();
	GLsizei numIndices = (GLsizei)getNumIndices(m_gridSizeX, m_gridSizeY);

	gl.viewport(0, 0, m_viewportWidth, m_viewportHeight);

	for (int callNdx = 0; callNdx < numDrawCalls; callNdx++)
	gl.drawElements(GL_TRIANGLES, numIndices, GL_UNSIGNED_SHORT, DE_NULL);
	}

	void ShaderPerformanceMeasurer::iterate (void)
	{
	DE_ASSERT(m_state == STATE_MEASURING);

	deUint64 renderStartTime = deGetMicroseconds();
	render(m_calibrator.getCallCount()); // Always render. This gives more stable performance behavior.

	TheilSenCalibrator::State calibratorState = m_calibrator.getState();

	if (calibratorState == TheilSenCalibrator::STATE_RECOMPUTE_PARAMS)
	{
	m_calibrator.recomputeParameters();

	m_isFirstIteration = true;
	m_prevRenderStartTime = renderStartTime;
	}
	else if (calibratorState == TheilSenCalibrator::STATE_MEASURE)
	{
	if (!m_isFirstIteration)
	m_calibrator.recordIteration(renderStartTime - m_prevRenderStartTime);

	m_isFirstIteration = false;
	m_prevRenderStartTime = renderStartTime;
	}
	else
	{
	DE_ASSERT(calibratorState == TheilSenCalibrator::STATE_FINISHED);

	GLU_EXPECT_NO_ERROR(m_renderCtx.getFunctions().getError(), "End of rendering");

	const MeasureState& measureState = m_calibrator.getMeasureState();

	// Compute result.
	deUint64 totalTime = measureState.getTotalTime();
	int numFrames = (int)measureState.frameTimes.size();
	deInt64 numQuadGrids = measureState.numDrawCalls * numFrames;
	deInt64 numPixels = (deInt64)m_viewportWidth * (deInt64)m_viewportHeight * numQuadGrids;
	deInt64 numVertices = (deInt64)getNumVertices(m_gridSizeX, m_gridSizeY) * numQuadGrids;
	double mfragPerSecond = (double)numPixels / (double)totalTime;
	double mvertPerSecond = (double)numVertices / (double)totalTime;

	m_result = Result((float)mvertPerSecond, (float)mfragPerSecond);
	m_state = STATE_FINISHED;
	}
	}

	void ShaderPerformanceMeasurer::logMeasurementInfo (TestLog& log) const
	{
	DE_ASSERT(m_state == STATE_FINISHED);

	const MeasureState& measureState(m_calibrator.getMeasureState());

	// Compute totals.
	deUint64 totalTime = measureState.getTotalTime();
	int numFrames = (int)measureState.frameTimes.size();
	deInt64 numQuadGrids = measureState.numDrawCalls * numFrames;
	deInt64 numPixels = (deInt64)m_viewportWidth * (deInt64)m_viewportHeight * numQuadGrids;
	deInt64 numVertices = (deInt64)getNumVertices(m_gridSizeX, m_gridSizeY) * numQuadGrids;
	double mfragPerSecond = (double)numPixels / (double)totalTime;
	double mvertPerSecond = (double)numVertices / (double)totalTime;
	double framesPerSecond = (double)numFrames / ((double)totalTime / 1000000.0);

	logCalibrationInfo(log, m_calibrator);

	log << TestLog::Float("FramesPerSecond", "Frames per second in measurement", "Frames/s", QP_KEY_TAG_PERFORMANCE, (float)framesPerSecond)
	<< TestLog::Float("FragmentsPerVertices", "Vertex-fragment ratio", "Fragments/Vertices", QP_KEY_TAG_NONE, (float)numPixels / (float)numVertices)
	<< TestLog::Float("FragmentPerf", "Fragment performance", "MPix/s", QP_KEY_TAG_PERFORMANCE, (float)mfragPerSecond)
	<< TestLog::Float("VertexPerf", "Vertex performance", "MVert/s", QP_KEY_TAG_PERFORMANCE, (float)mvertPerSecond);
	}

	void ShaderPerformanceMeasurer::setGridSize (int gridW, int gridH)
	{
	DE_ASSERT(m_state == STATE_UNINITIALIZED);
	DE_ASSERT(de::inBounds(gridW, 1, 256) && de::inBounds(gridH, 1, 256));
	m_gridSizeX = gridW;
	m_gridSizeY = gridH;
	}

	void ShaderPerformanceMeasurer::setViewportSize (int width, int height)
	{
	DE_ASSERT(m_state == STATE_UNINITIALIZED);
	DE_ASSERT(de::inRange(width, 1, m_renderCtx.getRenderTarget().getWidth()) &&
	de::inRange(height, 1, m_renderCtx.getRenderTarget().getHeight()));
	m_viewportWidth = width;
	m_viewportHeight = height;
	}

	} // gls
	} // deqp