Source/ThirdParty/ANGLE/src/tests/perf_tests/MapBufferRange.cpp - WebKit - Git at Google

 //
 // Copyright 2021 The ANGLE Project Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // MapBufferRangeBenchmark::
 //   Performance test for ANGLE GLES mapped buffers.
 //

 #include "ANGLEPerfTest.h"

 #include <sstream>
 #include <vector>

 #include "common/debug.h"
 #include "test_utils/draw_call_perf_utils.h"

 using namespace angle;

 namespace
 {
 constexpr unsigned int kIterationsPerStep = 10;

 struct MapBufferRangeParams final : public RenderTestParams
 {
     MapBufferRangeParams()
     {
         // Common default values
         majorVersion = 3;
         minorVersion = 0;
         windowWidth  = 512;
         windowHeight = 512;
         // Test intentionally small update versus buffer size to begin with.
         updateSize        = 32768;
         updateOffset      = 0;
         bufferSize        = 1048576;
         iterationsPerStep = kIterationsPerStep;
         access            = GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_RANGE_BIT;
     }

     std::string story() const override;

     GLboolean vertexNormalized;
     GLenum vertexType;
     GLint vertexComponentCount;

     // static parameters
     GLsizeiptr updateSize;
     GLsizeiptr updateOffset;
     GLsizeiptr bufferSize;
     GLbitfield access;
 };

 std::ostream &operator<<(std::ostream &os, const MapBufferRangeParams &params)
 {
     os << params.backendAndStory().substr(1);
     return os;
 }

 class MapBufferRangeBenchmark : public ANGLERenderTest,
                                 public ::testing::WithParamInterface<MapBufferRangeParams>
 {
   public:
     MapBufferRangeBenchmark();

     void initializeBenchmark() override;
     void destroyBenchmark() override;
     void drawBenchmark() override;

   private:
     GLuint mProgram;
     GLuint mBuffer;
     std::vector<uint8_t> mVertexData;
     int mTriSize;
     int mNumUpdateTris;
 };

 const GLfloat *GetFloatData(GLint componentCount)
 {
     static GLfloat vertices2[] = {
         1, 2, 0, 0, 2, 0,
     };

     static GLfloat vertices3[] = {
         1, 2, 1, 0, 0, 1, 2, 0, 1,
     };

     static GLfloat vertices4[] = {
         1, 2, 1, 3, 0, 0, 1, 3, 2, 0, 1, 3,
     };

     switch (componentCount)
     {
         case 2:
             return vertices2;
         case 3:
             return vertices3;
         case 4:
             return vertices4;
         default:
             UNREACHABLE();
     }

     return 0;
 }

 template <class T>
 GLsizei GetNormalizedData(GLsizeiptr numElements,
                           const GLfloat *floatData,
                           std::vector<uint8_t> *data)
 {
     GLsizei triDataSize = sizeof(T) * numElements;
     data->resize(triDataSize);

     T *destPtr = reinterpret_cast<T *>(data->data());

     for (GLsizeiptr dataIndex = 0; dataIndex < numElements; dataIndex++)
     {
         GLfloat scaled = floatData[dataIndex] * 0.25f;
         destPtr[dataIndex] =
             static_cast<T>(scaled * static_cast<GLfloat>(std::numeric_limits<T>::max()));
     }

     return triDataSize;
 }

 template <class T>
 GLsizei GetIntData(GLsizeiptr numElements, const GLfloat *floatData, std::vector<uint8_t> *data)
 {
     GLsizei triDataSize = sizeof(T) * numElements;
     data->resize(triDataSize);

     T *destPtr = reinterpret_cast<T *>(data->data());

     for (GLsizeiptr dataIndex = 0; dataIndex < numElements; dataIndex++)
     {
         destPtr[dataIndex] = static_cast<T>(floatData[dataIndex]);
     }

     return triDataSize;
 }

 GLsizei GetVertexData(GLenum type,
                       GLint componentCount,
                       GLboolean normalized,
                       std::vector<uint8_t> *data)
 {
     GLsizei triDataSize      = 0;
     const GLfloat *floatData = GetFloatData(componentCount);

     if (type == GL_FLOAT)
     {
         triDataSize = sizeof(GLfloat) * componentCount * 3;
         data->resize(triDataSize);
         memcpy(data->data(), floatData, triDataSize);
     }
     else if (normalized == GL_TRUE)
     {
         GLsizeiptr numElements = componentCount * 3;

         switch (type)
         {
             case GL_BYTE:
                 triDataSize = GetNormalizedData<GLbyte>(numElements, floatData, data);
                 break;
             case GL_SHORT:
                 triDataSize = GetNormalizedData<GLshort>(numElements, floatData, data);
                 break;
             case GL_INT:
                 triDataSize = GetNormalizedData<GLint>(numElements, floatData, data);
                 break;
             case GL_UNSIGNED_BYTE:
                 triDataSize = GetNormalizedData<GLubyte>(numElements, floatData, data);
                 break;
             case GL_UNSIGNED_SHORT:
                 triDataSize = GetNormalizedData<GLushort>(numElements, floatData, data);
                 break;
             case GL_UNSIGNED_INT:
                 triDataSize = GetNormalizedData<GLuint>(numElements, floatData, data);
                 break;
             default:
                 UNREACHABLE();
         }
     }
     else
     {
         GLsizeiptr numElements = componentCount * 3;

         switch (type)
         {
             case GL_BYTE:
                 triDataSize = GetIntData<GLbyte>(numElements, floatData, data);
                 break;
             case GL_SHORT:
                 triDataSize = GetIntData<GLshort>(numElements, floatData, data);
                 break;
             case GL_INT:
                 triDataSize = GetIntData<GLint>(numElements, floatData, data);
                 break;
             case GL_UNSIGNED_BYTE:
                 triDataSize = GetIntData<GLubyte>(numElements, floatData, data);
                 break;
             case GL_UNSIGNED_SHORT:
                 triDataSize = GetIntData<GLushort>(numElements, floatData, data);
                 break;
             case GL_UNSIGNED_INT:
                 triDataSize = GetIntData<GLuint>(numElements, floatData, data);
                 break;
             default:
                 assert(0);
         }
     }

     return triDataSize;
 }

 std::string MapBufferRangeParams::story() const
 {
     std::stringstream strstr;

     strstr << RenderTestParams::story();

     if (vertexNormalized)
     {
         strstr << "_norm";
     }

     switch (vertexType)
     {
         case GL_FLOAT:
             strstr << "_float";
             break;
         case GL_INT:
             strstr << "_int";
             break;
         case GL_BYTE:
             strstr << "_byte";
             break;
         case GL_SHORT:
             strstr << "_short";
             break;
         case GL_UNSIGNED_INT:
             strstr << "_uint";
             break;
         case GL_UNSIGNED_BYTE:
             strstr << "_ubyte";
             break;
         case GL_UNSIGNED_SHORT:
             strstr << "_ushort";
             break;
         default:
             UNREACHABLE();
     }

     strstr << vertexComponentCount;
     strstr << "_updateOffset" << updateOffset;
     strstr << "_updateSize" << updateSize;
     strstr << "_bufferSize" << bufferSize;
     strstr << "_access0x" << std::hex << access;

     return strstr.str();
 }

 MapBufferRangeBenchmark::MapBufferRangeBenchmark()
     : ANGLERenderTest("MapBufferRange", GetParam()),
       mProgram(0),
       mBuffer(0),
       mTriSize(0),
       mNumUpdateTris(0)
 {}

 void MapBufferRangeBenchmark::initializeBenchmark()
 {
     const auto &params = GetParam();

     ASSERT_LT(1, params.vertexComponentCount);
     ASSERT_LE(params.updateSize, params.bufferSize);
     ASSERT_LT(params.updateOffset, params.bufferSize);
     ASSERT_LE(params.updateOffset + params.updateSize, params.bufferSize);

     mProgram = SetupSimpleScaleAndOffsetProgram();
     ASSERT_NE(0u, mProgram);

     if (params.vertexNormalized == GL_TRUE)
     {
         GLfloat scale  = 2.0f;
         GLfloat offset = -0.5f;
         glUniform1f(glGetUniformLocation(mProgram, "uScale"), scale);
         glUniform1f(glGetUniformLocation(mProgram, "uOffset"), offset);
     }

     glClearColor(0.0f, 0.0f, 0.0f, 0.0f);

     glGenBuffers(1, &mBuffer);
     glBindBuffer(GL_ARRAY_BUFFER, mBuffer);
     glBufferData(GL_ARRAY_BUFFER, params.bufferSize, nullptr, GL_DYNAMIC_DRAW);

     glVertexAttribPointer(0, params.vertexComponentCount, params.vertexType,
                           params.vertexNormalized, 0, 0);
     glEnableVertexAttribArray(0);

     mTriSize = GetVertexData(params.vertexType, params.vertexComponentCount,
                              params.vertexNormalized, &mVertexData);

     mNumUpdateTris = static_cast<int>(params.updateSize / mTriSize);
     int totalTris  = static_cast<int>(params.updateSize / mTriSize);

     mVertexData.resize(params.bufferSize);

     for (int i = 1; i < totalTris; ++i)
     {
         memcpy(mVertexData.data() + i * mTriSize, mVertexData.data(), mTriSize);
     }

     if (params.updateSize == 0)
     {
         mNumUpdateTris = 1;
         glBufferSubData(GL_ARRAY_BUFFER, 0, mVertexData.size(), mVertexData.data());
     }

     // Set the viewport
     glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());

     ASSERT_GL_NO_ERROR();
 }

 void MapBufferRangeBenchmark::destroyBenchmark()
 {
     glDeleteProgram(mProgram);
     glDeleteBuffers(1, &mBuffer);
 }

 void MapBufferRangeBenchmark::drawBenchmark()
 {
     glClear(GL_COLOR_BUFFER_BIT);

     const auto &params = GetParam();

     for (unsigned int it = 0; it < params.iterationsPerStep; it++)
     {
         if (params.updateSize > 0)
         {
             void *mapPtr = glMapBufferRange(GL_ARRAY_BUFFER, params.updateOffset, params.updateSize,
                                             params.access);
             memcpy(mapPtr, mVertexData.data() + params.updateOffset, params.updateSize);
             glUnmapBuffer(GL_ARRAY_BUFFER);
         }

         glDrawArrays(GL_TRIANGLES, params.updateOffset / mTriSize, 3 * mNumUpdateTris);
     }

     ASSERT_GL_NO_ERROR();
 }

 MapBufferRangeParams BufferUpdateD3D11Params()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::D3D11();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     return params;
 }

 MapBufferRangeParams BufferUpdateOpenGLOrGLESParams()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::OPENGL_OR_GLES();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     return params;
 }

 MapBufferRangeParams BufferUpdateVulkanParams()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::VULKAN();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     return params;
 }

 MapBufferRangeParams BufferUpdateVulkanParamsMidBuffer()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::VULKAN();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     params.updateOffset         = 524288;
     return params;
 }

 MapBufferRangeParams BufferUpdateVulkanParamsLargeUpdate()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::VULKAN();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     params.updateSize           = 524288;
     return params;
 }

 MapBufferRangeParams BufferUpdateVulkanParamsFullBuffer()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::VULKAN();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     params.updateSize           = 1048576;
     return params;
 }

 MapBufferRangeParams BufferUpdateVulkanParamsTinyUpdate()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::VULKAN();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     params.updateSize           = 128;
     return params;
 }

 MapBufferRangeParams BufferUpdateVulkanParamsNonPowerOf2()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::VULKAN();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     params.updateSize           = 32000;
     params.bufferSize           = 800000;
     return params;
 }

 MapBufferRangeParams BufferUpdateVulkanParamsUnsynchronized()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::VULKAN();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     params.access               = GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT;
     return params;
 }

 MapBufferRangeParams BufferUpdateVulkanParamsLargeUpdateUnsynchronized()
 {
     MapBufferRangeParams params;
     params.eglParameters        = egl_platform::VULKAN();
     params.vertexType           = GL_FLOAT;
     params.vertexComponentCount = 4;
     params.vertexNormalized     = GL_FALSE;
     params.updateSize           = 524288;
     params.access               = GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT;
     return params;
 }

 TEST_P(MapBufferRangeBenchmark, Run)
 {
     run();
 }

 ANGLE_INSTANTIATE_TEST(MapBufferRangeBenchmark,
                        BufferUpdateD3D11Params(),
                        BufferUpdateOpenGLOrGLESParams(),
                        BufferUpdateVulkanParams(),
                        BufferUpdateVulkanParamsMidBuffer(),
                        BufferUpdateVulkanParamsLargeUpdate(),
                        BufferUpdateVulkanParamsFullBuffer(),
                        BufferUpdateVulkanParamsTinyUpdate(),
                        BufferUpdateVulkanParamsNonPowerOf2(),
                        BufferUpdateVulkanParamsUnsynchronized(),
                        BufferUpdateVulkanParamsLargeUpdateUnsynchronized());

 }  // namespace
	//
	// Copyright 2021 The ANGLE Project Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.
	//
	// MapBufferRangeBenchmark::
	// Performance test for ANGLE GLES mapped buffers.
	//

	#include "ANGLEPerfTest.h"

	#include <sstream>
	#include <vector>

	#include "common/debug.h"
	#include "test_utils/draw_call_perf_utils.h"

	using namespace angle;

	namespace
	{
	constexpr unsigned int kIterationsPerStep = 10;

	struct MapBufferRangeParams final : public RenderTestParams
	{
	MapBufferRangeParams()
	{
	// Common default values
	majorVersion = 3;
	minorVersion = 0;
	windowWidth = 512;
	windowHeight = 512;
	// Test intentionally small update versus buffer size to begin with.
	updateSize = 32768;
	updateOffset = 0;
	bufferSize = 1048576;
	iterationsPerStep = kIterationsPerStep;
	access = GL_MAP_WRITE_BIT \| GL_MAP_INVALIDATE_RANGE_BIT;
	}

	std::string story() const override;

	GLboolean vertexNormalized;
	GLenum vertexType;
	GLint vertexComponentCount;

	// static parameters
	GLsizeiptr updateSize;
	GLsizeiptr updateOffset;
	GLsizeiptr bufferSize;
	GLbitfield access;
	};

	std::ostream &operator<<(std::ostream &os, const MapBufferRangeParams &params)
	{
	os << params.backendAndStory().substr(1);
	return os;
	}

	class MapBufferRangeBenchmark : public ANGLERenderTest,
	public ::testing::WithParamInterface<MapBufferRangeParams>
	{
	public:
	MapBufferRangeBenchmark();

	void initializeBenchmark() override;
	void destroyBenchmark() override;
	void drawBenchmark() override;

	private:
	GLuint mProgram;
	GLuint mBuffer;
	std::vector<uint8_t> mVertexData;
	int mTriSize;
	int mNumUpdateTris;
	};

	const GLfloat *GetFloatData(GLint componentCount)
	{
	static GLfloat vertices2[] = {
	1, 2, 0, 0, 2, 0,
	};

	static GLfloat vertices3[] = {
	1, 2, 1, 0, 0, 1, 2, 0, 1,
	};

	static GLfloat vertices4[] = {
	1, 2, 1, 3, 0, 0, 1, 3, 2, 0, 1, 3,
	};

	switch (componentCount)
	{
	case 2:
	return vertices2;
	case 3:
	return vertices3;
	case 4:
	return vertices4;
	default:
	UNREACHABLE();
	}

	return 0;
	}

	template <class T>
	GLsizei GetNormalizedData(GLsizeiptr numElements,
	const GLfloat *floatData,
	std::vector<uint8_t> *data)
	{
	GLsizei triDataSize = sizeof(T) * numElements;
	data->resize(triDataSize);

	T destPtr = reinterpret_cast<T >(data->data());

	for (GLsizeiptr dataIndex = 0; dataIndex < numElements; dataIndex++)
	{
	GLfloat scaled = floatData[dataIndex] * 0.25f;
	destPtr[dataIndex] =
	static_cast<T>(scaled * static_cast<GLfloat>(std::numeric_limits<T>::max()));
	}

	return triDataSize;
	}

	template <class T>
	GLsizei GetIntData(GLsizeiptr numElements, const GLfloat floatData, std::vector<uint8_t> data)
	{
	GLsizei triDataSize = sizeof(T) * numElements;
	data->resize(triDataSize);

	T destPtr = reinterpret_cast<T >(data->data());

	for (GLsizeiptr dataIndex = 0; dataIndex < numElements; dataIndex++)
	{
	destPtr[dataIndex] = static_cast<T>(floatData[dataIndex]);
	}

	return triDataSize;
	}

	GLsizei GetVertexData(GLenum type,
	GLint componentCount,
	GLboolean normalized,
	std::vector<uint8_t> *data)
	{
	GLsizei triDataSize = 0;
	const GLfloat *floatData = GetFloatData(componentCount);

	if (type == GL_FLOAT)
	{
	triDataSize = sizeof(GLfloat) * componentCount * 3;
	data->resize(triDataSize);
	memcpy(data->data(), floatData, triDataSize);
	}
	else if (normalized == GL_TRUE)
	{
	GLsizeiptr numElements = componentCount * 3;

	switch (type)
	{
	case GL_BYTE:
	triDataSize = GetNormalizedData<GLbyte>(numElements, floatData, data);
	break;
	case GL_SHORT:
	triDataSize = GetNormalizedData<GLshort>(numElements, floatData, data);
	break;
	case GL_INT:
	triDataSize = GetNormalizedData<GLint>(numElements, floatData, data);
	break;
	case GL_UNSIGNED_BYTE:
	triDataSize = GetNormalizedData<GLubyte>(numElements, floatData, data);
	break;
	case GL_UNSIGNED_SHORT:
	triDataSize = GetNormalizedData<GLushort>(numElements, floatData, data);
	break;
	case GL_UNSIGNED_INT:
	triDataSize = GetNormalizedData<GLuint>(numElements, floatData, data);
	break;
	default:
	UNREACHABLE();
	}
	}
	else
	{
	GLsizeiptr numElements = componentCount * 3;

	switch (type)
	{
	case GL_BYTE:
	triDataSize = GetIntData<GLbyte>(numElements, floatData, data);
	break;
	case GL_SHORT:
	triDataSize = GetIntData<GLshort>(numElements, floatData, data);
	break;
	case GL_INT:
	triDataSize = GetIntData<GLint>(numElements, floatData, data);
	break;
	case GL_UNSIGNED_BYTE:
	triDataSize = GetIntData<GLubyte>(numElements, floatData, data);
	break;
	case GL_UNSIGNED_SHORT:
	triDataSize = GetIntData<GLushort>(numElements, floatData, data);
	break;
	case GL_UNSIGNED_INT:
	triDataSize = GetIntData<GLuint>(numElements, floatData, data);
	break;
	default:
	assert(0);
	}
	}

	return triDataSize;
	}

	std::string MapBufferRangeParams::story() const
	{
	std::stringstream strstr;

	strstr << RenderTestParams::story();

	if (vertexNormalized)
	{
	strstr << "_norm";
	}

	switch (vertexType)
	{
	case GL_FLOAT:
	strstr << "_float";
	break;
	case GL_INT:
	strstr << "_int";
	break;
	case GL_BYTE:
	strstr << "_byte";
	break;
	case GL_SHORT:
	strstr << "_short";
	break;
	case GL_UNSIGNED_INT:
	strstr << "_uint";
	break;
	case GL_UNSIGNED_BYTE:
	strstr << "_ubyte";
	break;
	case GL_UNSIGNED_SHORT:
	strstr << "_ushort";
	break;
	default:
	UNREACHABLE();
	}

	strstr << vertexComponentCount;
	strstr << "_updateOffset" << updateOffset;
	strstr << "_updateSize" << updateSize;
	strstr << "_bufferSize" << bufferSize;
	strstr << "_access0x" << std::hex << access;

	return strstr.str();
	}

	MapBufferRangeBenchmark::MapBufferRangeBenchmark()
	: ANGLERenderTest("MapBufferRange", GetParam()),
	mProgram(0),
	mBuffer(0),
	mTriSize(0),
	mNumUpdateTris(0)
	{}

	void MapBufferRangeBenchmark::initializeBenchmark()
	{
	const auto &params = GetParam();

	ASSERT_LT(1, params.vertexComponentCount);
	ASSERT_LE(params.updateSize, params.bufferSize);
	ASSERT_LT(params.updateOffset, params.bufferSize);
	ASSERT_LE(params.updateOffset + params.updateSize, params.bufferSize);

	mProgram = SetupSimpleScaleAndOffsetProgram();
	ASSERT_NE(0u, mProgram);

	if (params.vertexNormalized == GL_TRUE)
	{
	GLfloat scale = 2.0f;
	GLfloat offset = -0.5f;
	glUniform1f(glGetUniformLocation(mProgram, "uScale"), scale);
	glUniform1f(glGetUniformLocation(mProgram, "uOffset"), offset);
	}

	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);

	glGenBuffers(1, &mBuffer);
	glBindBuffer(GL_ARRAY_BUFFER, mBuffer);
	glBufferData(GL_ARRAY_BUFFER, params.bufferSize, nullptr, GL_DYNAMIC_DRAW);

	glVertexAttribPointer(0, params.vertexComponentCount, params.vertexType,
	params.vertexNormalized, 0, 0);
	glEnableVertexAttribArray(0);

	mTriSize = GetVertexData(params.vertexType, params.vertexComponentCount,
	params.vertexNormalized, &mVertexData);

	mNumUpdateTris = static_cast<int>(params.updateSize / mTriSize);
	int totalTris = static_cast<int>(params.updateSize / mTriSize);

	mVertexData.resize(params.bufferSize);

	for (int i = 1; i < totalTris; ++i)
	{
	memcpy(mVertexData.data() + i * mTriSize, mVertexData.data(), mTriSize);
	}

	if (params.updateSize == 0)
	{
	mNumUpdateTris = 1;
	glBufferSubData(GL_ARRAY_BUFFER, 0, mVertexData.size(), mVertexData.data());
	}

	// Set the viewport
	glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());

	ASSERT_GL_NO_ERROR();
	}

	void MapBufferRangeBenchmark::destroyBenchmark()
	{
	glDeleteProgram(mProgram);
	glDeleteBuffers(1, &mBuffer);
	}

	void MapBufferRangeBenchmark::drawBenchmark()
	{
	glClear(GL_COLOR_BUFFER_BIT);

	const auto &params = GetParam();

	for (unsigned int it = 0; it < params.iterationsPerStep; it++)
	{
	if (params.updateSize > 0)
	{
	void *mapPtr = glMapBufferRange(GL_ARRAY_BUFFER, params.updateOffset, params.updateSize,
	params.access);
	memcpy(mapPtr, mVertexData.data() + params.updateOffset, params.updateSize);
	glUnmapBuffer(GL_ARRAY_BUFFER);
	}

	glDrawArrays(GL_TRIANGLES, params.updateOffset / mTriSize, 3 * mNumUpdateTris);
	}

	ASSERT_GL_NO_ERROR();
	}

	MapBufferRangeParams BufferUpdateD3D11Params()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::D3D11();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	return params;
	}

	MapBufferRangeParams BufferUpdateOpenGLOrGLESParams()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::OPENGL_OR_GLES();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	return params;
	}

	MapBufferRangeParams BufferUpdateVulkanParams()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::VULKAN();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	return params;
	}

	MapBufferRangeParams BufferUpdateVulkanParamsMidBuffer()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::VULKAN();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	params.updateOffset = 524288;
	return params;
	}

	MapBufferRangeParams BufferUpdateVulkanParamsLargeUpdate()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::VULKAN();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	params.updateSize = 524288;
	return params;
	}

	MapBufferRangeParams BufferUpdateVulkanParamsFullBuffer()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::VULKAN();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	params.updateSize = 1048576;
	return params;
	}

	MapBufferRangeParams BufferUpdateVulkanParamsTinyUpdate()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::VULKAN();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	params.updateSize = 128;
	return params;
	}

	MapBufferRangeParams BufferUpdateVulkanParamsNonPowerOf2()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::VULKAN();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	params.updateSize = 32000;
	params.bufferSize = 800000;
	return params;
	}

	MapBufferRangeParams BufferUpdateVulkanParamsUnsynchronized()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::VULKAN();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	params.access = GL_MAP_WRITE_BIT \| GL_MAP_UNSYNCHRONIZED_BIT;
	return params;
	}

	MapBufferRangeParams BufferUpdateVulkanParamsLargeUpdateUnsynchronized()
	{
	MapBufferRangeParams params;
	params.eglParameters = egl_platform::VULKAN();
	params.vertexType = GL_FLOAT;
	params.vertexComponentCount = 4;
	params.vertexNormalized = GL_FALSE;
	params.updateSize = 524288;
	params.access = GL_MAP_WRITE_BIT \| GL_MAP_UNSYNCHRONIZED_BIT;
	return params;
	}

	TEST_P(MapBufferRangeBenchmark, Run)
	{
	run();
	}

	ANGLE_INSTANTIATE_TEST(MapBufferRangeBenchmark,
	BufferUpdateD3D11Params(),
	BufferUpdateOpenGLOrGLESParams(),
	BufferUpdateVulkanParams(),
	BufferUpdateVulkanParamsMidBuffer(),
	BufferUpdateVulkanParamsLargeUpdate(),
	BufferUpdateVulkanParamsFullBuffer(),
	BufferUpdateVulkanParamsTinyUpdate(),
	BufferUpdateVulkanParamsNonPowerOf2(),
	BufferUpdateVulkanParamsUnsynchronized(),
	BufferUpdateVulkanParamsLargeUpdateUnsynchronized());

	} // namespace