framework/platform/surfaceless/tcuSurfacelessPlatform.cpp - third_party/vulkan-cts - Git at Google

 /*-------------------------------------------------------------------------
  * drawElements Quality Program Tester Core
  * ----------------------------------------
  *
  * Copyright 2015 Intel Corporation
  *
  * 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 surfaceless platform
  *//*--------------------------------------------------------------------*/

 #include "tcuSurfacelessPlatform.hpp"

 #include <string>
 #include <vector>
 #include <sys/utsname.h>

 #include "deDynamicLibrary.hpp"
 #include "deMemory.h"
 #include "deSTLUtil.hpp"
 #include "egluUtil.hpp"
 #include "egluGLUtil.hpp"
 #include "eglwEnums.hpp"
 #include "eglwLibrary.hpp"
 #include "gluPlatform.hpp"
 #include "gluRenderConfig.hpp"
 #include "glwInitES20Direct.hpp"
 #include "glwInitES30Direct.hpp"
 #include "glwInitFunctions.hpp"
 #include "tcuFunctionLibrary.hpp"
 #include "tcuPixelFormat.hpp"
 #include "tcuPlatform.hpp"
 #include "tcuRenderTarget.hpp"
 #include "vkPlatform.hpp"

 #include <EGL/egl.h>

 using std::string;
 using std::vector;

 #if !defined(EGL_KHR_create_context)
 	#define EGL_CONTEXT_FLAGS_KHR					0x30FC
 	#define EGL_CONTEXT_MAJOR_VERSION_KHR				0x3098
 	#define EGL_CONTEXT_MINOR_VERSION_KHR				0x30FB
 	#define EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR	0x00000002
 	#define EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR			0x00000001
 	#define EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR			0x00000001
 	#define EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR		0x00000002
 	#define EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR			0x30FD
 	#define EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR	0x31BD
 	#define EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR		0x00000004
 	#define EGL_KHR_create_context					1
 	#define EGL_LOSE_CONTEXT_ON_RESET_KHR				0x31BF
 	#define EGL_NO_RESET_NOTIFICATION_KHR				0x31BE
 	#define EGL_OPENGL_ES3_BIT_KHR					0x00000040
 #endif // EGL_KHR_create_context

 // Default library names
 #if !defined(DEQP_GLES2_LIBRARY_PATH)
 #	define DEQP_GLES2_LIBRARY_PATH "libGLESv2.so"
 #endif

 #if !defined(DEQP_GLES3_LIBRARY_PATH)
 #	define DEQP_GLES3_LIBRARY_PATH DEQP_GLES2_LIBRARY_PATH
 #endif

 #if !defined(DEQP_OPENGL_LIBRARY_PATH)
 #	define DEQP_OPENGL_LIBRARY_PATH "libGL.so"
 #endif

 namespace tcu
 {
 namespace surfaceless
 {

 class VulkanLibrary : public vk::Library
 {
 public:
 	VulkanLibrary (void)
 		: m_library	("libvulkan.so.1")
 		, m_driver	(m_library)
 	{
 	}

 	const vk::PlatformInterface& getPlatformInterface (void) const
 	{
 		return m_driver;
 	}
 	const tcu::FunctionLibrary&		getFunctionLibrary		(void) const
 	{
 		return m_library;
 	}
 private:
 	const tcu::DynamicFunctionLibrary	m_library;
 	const vk::PlatformDriver			m_driver;
 };

 // Copied from tcuX11Platform.cpp
 class VulkanPlatform : public vk::Platform
 {
 public:
 	vk::Library* createLibrary (void) const
 	{
 		return new VulkanLibrary();
 	}

 	void describePlatform (std::ostream& dst) const
 	{
 		utsname		sysInfo;

 		deMemset(&sysInfo, 0, sizeof(sysInfo));

 		if (uname(&sysInfo) != 0)
 			throw std::runtime_error("uname() failed");

 		dst << "OS: " << sysInfo.sysname << " " << sysInfo.release << " " << sysInfo.version << "\n";
 		dst << "CPU: " << sysInfo.machine << "\n";
 	}

 	// FINISHME: Query actual memory limits.
 	//
 	// These hard-coded memory limits were copied from tcuX11Platform.cpp,
 	// and they work well enough for Intel platforms.
 	void getMemoryLimits (vk::PlatformMemoryLimits& limits) const
 	{
 		limits.totalSystemMemory					= 256*1024*1024;
 		limits.totalDeviceLocalMemory				= 128*1024*1024;
 		limits.deviceMemoryAllocationGranularity	= 64*1024;
 		limits.devicePageSize						= 4096;
 		limits.devicePageTableEntrySize				= 8;
 		limits.devicePageTableHierarchyLevels		= 3;
 	}
 };

 bool isEGLExtensionSupported(
 		const eglw::Library& egl,
 		eglw::EGLDisplay display,
 		const std::string& extName)
 {
 	const vector<string> exts = eglu::getClientExtensions(egl);
 	return de::contains(exts.begin(), exts.end(), extName);
 }

 class GetProcFuncLoader : public glw::FunctionLoader
 {
 public:
 	GetProcFuncLoader(const eglw::Library& egl): m_egl(egl)
 	{
 	}

 	glw::GenericFuncType get(const char* name) const
 	{
 		return (glw::GenericFuncType)m_egl.getProcAddress(name);
 	}
 protected:
 	const eglw::Library& m_egl;
 };

 class DynamicFuncLoader : public glw::FunctionLoader
 {
 public:
 	DynamicFuncLoader(de::DynamicLibrary* library): m_library(library)
 	{
 	}

 	glw::GenericFuncType get(const char* name) const
 	{
 		return (glw::GenericFuncType)m_library->getFunction(name);
 	}

 private:
 	de::DynamicLibrary*		m_library;
 };

 class Platform : public tcu::Platform, public glu::Platform
 {
 public:
 					Platform	(void);
 	const glu::Platform&		getGLPlatform	(void) const { return *this; }
 	const vk::Platform&			getVulkanPlatform	(void) const { return m_vkPlatform; }

 private:
 	VulkanPlatform		m_vkPlatform;
 };

 class ContextFactory : public glu::ContextFactory
 {
 public:
 					ContextFactory	(void);
 	glu::RenderContext*		createContext	(const glu::RenderConfig& config, const tcu::CommandLine& cmdLine) const;
 };

 class EglRenderContext : public glu::RenderContext
 {
 public:
 					EglRenderContext(const glu::RenderConfig& config, const tcu::CommandLine& cmdLine);
 					~EglRenderContext(void);

 	glu::ContextType		getType		(void) const	{ return m_contextType; }
 	const glw::Functions&		getFunctions	(void) const	{ return m_glFunctions; }
 	const tcu::RenderTarget&	getRenderTarget	(void) const;
 	void				postIterate	(void);

 private:
 	const eglw::DefaultLibrary      m_egl;
 	const glu::ContextType		m_contextType;
 	eglw::EGLDisplay		m_eglDisplay;
 	eglw::EGLContext		m_eglContext;
 	de::DynamicLibrary*		m_glLibrary;
 	glw::Functions			m_glFunctions;
 	tcu::RenderTarget		m_renderTarget;
 };

 Platform::Platform(void)
 {
 	m_contextFactoryRegistry.registerFactory(new ContextFactory());
 }

 ContextFactory::ContextFactory()
 	: glu::ContextFactory("default", "EGL surfaceless context")
 {}

 glu::RenderContext* ContextFactory::createContext(const glu::RenderConfig& config, const tcu::CommandLine& cmdLine) const
 {
 	return new EglRenderContext(config, cmdLine);
 }

 EglRenderContext::EglRenderContext(const glu::RenderConfig& config, const tcu::CommandLine& cmdLine)
 	: m_egl("libEGL.so")
 	, m_contextType(config.type)
 	, m_eglDisplay(EGL_NO_DISPLAY)
 	, m_eglContext(EGL_NO_CONTEXT)
 	, m_renderTarget(
 			config.width,
 			config.height,
 			tcu::PixelFormat(
 					config.redBits,
 					config.greenBits,
 					config.blueBits,
 					config.alphaBits),
 			config.depthBits,
 			config.stencilBits,
 			config.numSamples)

 {
 	vector<eglw::EGLint>	context_attribs;
 	vector<eglw::EGLint>	frame_buffer_attribs;
 	vector<eglw::EGLint>	surface_attribs;

 	const glu::ContextType&	contextType = config.type;
 	eglw::EGLint		eglMajorVersion;
 	eglw::EGLint		eglMinorVersion;
 	eglw::EGLint		flags = 0;
 	eglw::EGLint		num_configs;
 	eglw::EGLConfig		egl_config;
 	eglw::EGLSurface	egl_surface;

 	(void) cmdLine;

 	m_eglDisplay = m_egl.getDisplay(NULL);
 	EGLU_CHECK_MSG(m_egl, "eglGetDisplay()");
 	if (m_eglDisplay == EGL_NO_DISPLAY)
 		throw tcu::ResourceError("eglGetDisplay() failed");

 	EGLU_CHECK_CALL(m_egl, initialize(m_eglDisplay, &eglMajorVersion, &eglMinorVersion));

 	frame_buffer_attribs.push_back(EGL_RENDERABLE_TYPE);
 	switch(contextType.getMajorVersion())
 	{
 		case 3:
 			frame_buffer_attribs.push_back(EGL_OPENGL_ES3_BIT);
 			break;
 		case 2:
 			frame_buffer_attribs.push_back(EGL_OPENGL_ES2_BIT);
 			break;
 		default:
 			frame_buffer_attribs.push_back(EGL_OPENGL_ES_BIT);
 	}

 	frame_buffer_attribs.push_back(EGL_SURFACE_TYPE);
 	switch (config.surfaceType)
 	{
 		case glu::RenderConfig::SURFACETYPE_DONT_CARE:
 			frame_buffer_attribs.push_back(EGL_DONT_CARE);
 			break;
 		case glu::RenderConfig::SURFACETYPE_OFFSCREEN_NATIVE:
 			break;
 		case glu::RenderConfig::SURFACETYPE_OFFSCREEN_GENERIC:
 			frame_buffer_attribs.push_back(EGL_PBUFFER_BIT);
 			surface_attribs.push_back(EGL_WIDTH);
 			surface_attribs.push_back(config.width);
 			surface_attribs.push_back(EGL_HEIGHT);
 			surface_attribs.push_back(config.height);
 			break;
 		case glu::RenderConfig::SURFACETYPE_WINDOW:
 			throw tcu::NotSupportedError("surfaceless platform does not support --deqp-surface-type=window");
 		case glu::RenderConfig::SURFACETYPE_LAST:
 			TCU_CHECK_INTERNAL(false);
 	}

 	surface_attribs.push_back(EGL_NONE);

 	frame_buffer_attribs.push_back(EGL_RED_SIZE);
 	frame_buffer_attribs.push_back(config.redBits);

 	frame_buffer_attribs.push_back(EGL_GREEN_SIZE);
 	frame_buffer_attribs.push_back(config.greenBits);

 	frame_buffer_attribs.push_back(EGL_BLUE_SIZE);
 	frame_buffer_attribs.push_back(config.blueBits);

 	frame_buffer_attribs.push_back(EGL_ALPHA_SIZE);
 	frame_buffer_attribs.push_back(config.alphaBits);

 	frame_buffer_attribs.push_back(EGL_DEPTH_SIZE);
 	frame_buffer_attribs.push_back(config.depthBits);

 	frame_buffer_attribs.push_back(EGL_STENCIL_SIZE);
 	frame_buffer_attribs.push_back(config.stencilBits);

 	frame_buffer_attribs.push_back(EGL_NONE);

 	if (!eglChooseConfig(m_eglDisplay, &frame_buffer_attribs[0], NULL, 0, &num_configs))
 		throw tcu::ResourceError("surfaceless couldn't find any config");

 	if (!eglChooseConfig(m_eglDisplay, &frame_buffer_attribs[0], &egl_config, 1, &num_configs))
 		throw tcu::ResourceError("surfaceless couldn't find any config");

 	switch (config.surfaceType)
 	{
 		case glu::RenderConfig::SURFACETYPE_DONT_CARE:
 			egl_surface = EGL_NO_SURFACE;
 			break;
 		case glu::RenderConfig::SURFACETYPE_OFFSCREEN_GENERIC:
 			egl_surface = eglCreatePbufferSurface(m_eglDisplay, egl_config, &surface_attribs[0]);
 			break;
 	}

 	context_attribs.push_back(EGL_CONTEXT_MAJOR_VERSION_KHR);
 	context_attribs.push_back(contextType.getMajorVersion());
 	context_attribs.push_back(EGL_CONTEXT_MINOR_VERSION_KHR);
 	context_attribs.push_back(contextType.getMinorVersion());

 	switch (contextType.getProfile())
 	{
 		case glu::PROFILE_ES:
 			EGLU_CHECK_CALL(m_egl, bindAPI(EGL_OPENGL_ES_API));
 			break;
 		case glu::PROFILE_CORE:
 			EGLU_CHECK_CALL(m_egl, bindAPI(EGL_OPENGL_API));
 			context_attribs.push_back(EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR);
 			context_attribs.push_back(EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR);
 			break;
 		case glu::PROFILE_COMPATIBILITY:
 			EGLU_CHECK_CALL(m_egl, bindAPI(EGL_OPENGL_API));
 			context_attribs.push_back(EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR);
 			context_attribs.push_back(EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR);
 			break;
 		case glu::PROFILE_LAST:
 			TCU_CHECK_INTERNAL(false);
 	}

 	if ((contextType.getFlags() & glu::CONTEXT_DEBUG) != 0)
 		flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;

 	if ((contextType.getFlags() & glu::CONTEXT_ROBUST) != 0)
 		flags |= EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR;

 	if ((contextType.getFlags() & glu::CONTEXT_FORWARD_COMPATIBLE) != 0)
 		flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;

 	context_attribs.push_back(EGL_CONTEXT_FLAGS_KHR);
 	context_attribs.push_back(flags);

 	context_attribs.push_back(EGL_NONE);

 	m_eglContext = m_egl.createContext(m_eglDisplay, egl_config, EGL_NO_CONTEXT, &context_attribs[0]);
 	EGLU_CHECK_MSG(m_egl, "eglCreateContext()");
 	if (!m_eglContext)
 		throw tcu::ResourceError("eglCreateContext failed");

 	EGLU_CHECK_CALL(m_egl, makeCurrent(m_eglDisplay, egl_surface, egl_surface, m_eglContext));

 	if ((eglMajorVersion == 1 && eglMinorVersion >= 5) ||
 		isEGLExtensionSupported(m_egl, m_eglDisplay, "EGL_KHR_get_all_proc_addresses") ||
 		isEGLExtensionSupported(m_egl, EGL_NO_DISPLAY, "EGL_KHR_client_get_all_proc_addresses"))
 	{
 		// Use eglGetProcAddress() for core functions
 		GetProcFuncLoader funcLoader(m_egl);
 		glu::initCoreFunctions(&m_glFunctions, &funcLoader, contextType.getAPI());
 	}
 #if !defined(DEQP_GLES2_RUNTIME_LOAD)
 	else if (contextType.getAPI() == glu::ApiType::es(2,0))
 	{
 		glw::initES20Direct(&m_glFunctions);
 	}
 #endif
 #if !defined(DEQP_GLES3_RUNTIME_LOAD)
 	else if (contextType.getAPI() == glu::ApiType::es(3,0))
 	{
 		glw::initES30Direct(&m_glFunctions);
 	}
 #endif
 	else
 	{
 		const char* libraryPath = NULL;

 		if (glu::isContextTypeES(contextType))
 		{
 			if (contextType.getMinorVersion() <= 2)
 				libraryPath = DEQP_GLES2_LIBRARY_PATH;
 			else
 				libraryPath = DEQP_GLES3_LIBRARY_PATH;
 		}
 		else
 		{
 			libraryPath = DEQP_OPENGL_LIBRARY_PATH;
 		}

 		m_glLibrary = new de::DynamicLibrary(libraryPath);

 		DynamicFuncLoader funcLoader(m_glLibrary);
 		glu::initCoreFunctions(&m_glFunctions, &funcLoader, contextType.getAPI());
 	}

 	{
 		GetProcFuncLoader extLoader(m_egl);
 		glu::initExtensionFunctions(&m_glFunctions, &extLoader, contextType.getAPI());
 	}
 }

 EglRenderContext::~EglRenderContext(void)
 {
 	try
 	{
 		if (m_eglDisplay != EGL_NO_DISPLAY)
 		{
 			EGLU_CHECK_CALL(m_egl, makeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT));

 			if (m_eglContext != EGL_NO_CONTEXT)
 				EGLU_CHECK_CALL(m_egl, destroyContext(m_eglDisplay, m_eglContext));
 		}

 		EGLU_CHECK_CALL(m_egl, terminate(m_eglDisplay));
 	}
 	catch (...)
 	{
 	}
 }

 const tcu::RenderTarget& EglRenderContext::getRenderTarget(void) const
 {
 	return m_renderTarget;
 }

 void EglRenderContext::postIterate(void)
 {
 	this->getFunctions().finish();
 }

 } // namespace surfaceless
 } // namespace tcu

 tcu::Platform* createPlatform(void)
 {
 	return new tcu::surfaceless::Platform();
 }
	/*-------------------------------------------------------------------------
	* drawElements Quality Program Tester Core
	* ----------------------------------------
	*
	* Copyright 2015 Intel Corporation
	*
	* 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 surfaceless platform
	//--------------------------------------------------------------------*/

	#include "tcuSurfacelessPlatform.hpp"

	#include <string>
	#include <vector>
	#include <sys/utsname.h>

	#include "deDynamicLibrary.hpp"
	#include "deMemory.h"
	#include "deSTLUtil.hpp"
	#include "egluUtil.hpp"
	#include "egluGLUtil.hpp"
	#include "eglwEnums.hpp"
	#include "eglwLibrary.hpp"
	#include "gluPlatform.hpp"
	#include "gluRenderConfig.hpp"
	#include "glwInitES20Direct.hpp"
	#include "glwInitES30Direct.hpp"
	#include "glwInitFunctions.hpp"
	#include "tcuFunctionLibrary.hpp"
	#include "tcuPixelFormat.hpp"
	#include "tcuPlatform.hpp"
	#include "tcuRenderTarget.hpp"
	#include "vkPlatform.hpp"

	#include <EGL/egl.h>

	using std::string;
	using std::vector;

	#if !defined(EGL_KHR_create_context)
	#define EGL_CONTEXT_FLAGS_KHR 0x30FC
	#define EGL_CONTEXT_MAJOR_VERSION_KHR 0x3098
	#define EGL_CONTEXT_MINOR_VERSION_KHR 0x30FB
	#define EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR 0x00000002
	#define EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR 0x00000001
	#define EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR 0x00000001
	#define EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR 0x00000002
	#define EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR 0x30FD
	#define EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR 0x31BD
	#define EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR 0x00000004
	#define EGL_KHR_create_context 1
	#define EGL_LOSE_CONTEXT_ON_RESET_KHR 0x31BF
	#define EGL_NO_RESET_NOTIFICATION_KHR 0x31BE
	#define EGL_OPENGL_ES3_BIT_KHR 0x00000040
	#endif // EGL_KHR_create_context

	// Default library names
	#if !defined(DEQP_GLES2_LIBRARY_PATH)
	# define DEQP_GLES2_LIBRARY_PATH "libGLESv2.so"
	#endif

	#if !defined(DEQP_GLES3_LIBRARY_PATH)
	# define DEQP_GLES3_LIBRARY_PATH DEQP_GLES2_LIBRARY_PATH
	#endif

	#if !defined(DEQP_OPENGL_LIBRARY_PATH)
	# define DEQP_OPENGL_LIBRARY_PATH "libGL.so"
	#endif

	namespace tcu
	{
	namespace surfaceless
	{

	class VulkanLibrary : public vk::Library
	{
	public:
	VulkanLibrary (void)
	: m_library ("libvulkan.so.1")
	, m_driver (m_library)
	{
	}

	const vk::PlatformInterface& getPlatformInterface (void) const
	{
	return m_driver;
	}
	const tcu::FunctionLibrary& getFunctionLibrary (void) const
	{
	return m_library;
	}
	private:
	const tcu::DynamicFunctionLibrary m_library;
	const vk::PlatformDriver m_driver;
	};

	// Copied from tcuX11Platform.cpp
	class VulkanPlatform : public vk::Platform
	{
	public:
	vk::Library* createLibrary (void) const
	{
	return new VulkanLibrary();
	}

	void describePlatform (std::ostream& dst) const
	{
	utsname sysInfo;

	deMemset(&sysInfo, 0, sizeof(sysInfo));

	if (uname(&sysInfo) != 0)
	throw std::runtime_error("uname() failed");

	dst << "OS: " << sysInfo.sysname << " " << sysInfo.release << " " << sysInfo.version << "\n";
	dst << "CPU: " << sysInfo.machine << "\n";
	}

	// FINISHME: Query actual memory limits.
	//
	// These hard-coded memory limits were copied from tcuX11Platform.cpp,
	// and they work well enough for Intel platforms.
	void getMemoryLimits (vk::PlatformMemoryLimits& limits) const
	{
	limits.totalSystemMemory = 25610241024;
	limits.totalDeviceLocalMemory = 12810241024;
	limits.deviceMemoryAllocationGranularity = 64*1024;
	limits.devicePageSize = 4096;
	limits.devicePageTableEntrySize = 8;
	limits.devicePageTableHierarchyLevels = 3;
	}
	};

	bool isEGLExtensionSupported(
	const eglw::Library& egl,
	eglw::EGLDisplay display,
	const std::string& extName)
	{
	const vector<string> exts = eglu::getClientExtensions(egl);
	return de::contains(exts.begin(), exts.end(), extName);
	}

	class GetProcFuncLoader : public glw::FunctionLoader
	{
	public:
	GetProcFuncLoader(const eglw::Library& egl): m_egl(egl)
	{
	}

	glw::GenericFuncType get(const char* name) const
	{
	return (glw::GenericFuncType)m_egl.getProcAddress(name);
	}
	protected:
	const eglw::Library& m_egl;
	};

	class DynamicFuncLoader : public glw::FunctionLoader
	{
	public:
	DynamicFuncLoader(de::DynamicLibrary* library): m_library(library)
	{
	}

	glw::GenericFuncType get(const char* name) const
	{
	return (glw::GenericFuncType)m_library->getFunction(name);
	}

	private:
	de::DynamicLibrary* m_library;
	};

	class Platform : public tcu::Platform, public glu::Platform
	{
	public:
	Platform (void);
	const glu::Platform& getGLPlatform (void) const { return *this; }
	const vk::Platform& getVulkanPlatform (void) const { return m_vkPlatform; }

	private:
	VulkanPlatform m_vkPlatform;
	};

	class ContextFactory : public glu::ContextFactory
	{
	public:
	ContextFactory (void);
	glu::RenderContext* createContext (const glu::RenderConfig& config, const tcu::CommandLine& cmdLine) const;
	};

	class EglRenderContext : public glu::RenderContext
	{
	public:
	EglRenderContext(const glu::RenderConfig& config, const tcu::CommandLine& cmdLine);
	~EglRenderContext(void);

	glu::ContextType getType (void) const { return m_contextType; }
	const glw::Functions& getFunctions (void) const { return m_glFunctions; }
	const tcu::RenderTarget& getRenderTarget (void) const;
	void postIterate (void);

	private:
	const eglw::DefaultLibrary m_egl;
	const glu::ContextType m_contextType;
	eglw::EGLDisplay m_eglDisplay;
	eglw::EGLContext m_eglContext;
	de::DynamicLibrary* m_glLibrary;
	glw::Functions m_glFunctions;
	tcu::RenderTarget m_renderTarget;
	};

	Platform::Platform(void)
	{
	m_contextFactoryRegistry.registerFactory(new ContextFactory());
	}

	ContextFactory::ContextFactory()
	: glu::ContextFactory("default", "EGL surfaceless context")
	{}

	glu::RenderContext* ContextFactory::createContext(const glu::RenderConfig& config, const tcu::CommandLine& cmdLine) const
	{
	return new EglRenderContext(config, cmdLine);
	}

	EglRenderContext::EglRenderContext(const glu::RenderConfig& config, const tcu::CommandLine& cmdLine)
	: m_egl("libEGL.so")
	, m_contextType(config.type)
	, m_eglDisplay(EGL_NO_DISPLAY)
	, m_eglContext(EGL_NO_CONTEXT)
	, m_renderTarget(
	config.width,
	config.height,
	tcu::PixelFormat(
	config.redBits,
	config.greenBits,
	config.blueBits,
	config.alphaBits),
	config.depthBits,
	config.stencilBits,
	config.numSamples)

	{
	vector<eglw::EGLint> context_attribs;
	vector<eglw::EGLint> frame_buffer_attribs;
	vector<eglw::EGLint> surface_attribs;

	const glu::ContextType& contextType = config.type;
	eglw::EGLint eglMajorVersion;
	eglw::EGLint eglMinorVersion;
	eglw::EGLint flags = 0;
	eglw::EGLint num_configs;
	eglw::EGLConfig egl_config;
	eglw::EGLSurface egl_surface;

	(void) cmdLine;

	m_eglDisplay = m_egl.getDisplay(NULL);
	EGLU_CHECK_MSG(m_egl, "eglGetDisplay()");
	if (m_eglDisplay == EGL_NO_DISPLAY)
	throw tcu::ResourceError("eglGetDisplay() failed");

	EGLU_CHECK_CALL(m_egl, initialize(m_eglDisplay, &eglMajorVersion, &eglMinorVersion));

	frame_buffer_attribs.push_back(EGL_RENDERABLE_TYPE);
	switch(contextType.getMajorVersion())
	{
	case 3:
	frame_buffer_attribs.push_back(EGL_OPENGL_ES3_BIT);
	break;
	case 2:
	frame_buffer_attribs.push_back(EGL_OPENGL_ES2_BIT);
	break;
	default:
	frame_buffer_attribs.push_back(EGL_OPENGL_ES_BIT);
	}

	frame_buffer_attribs.push_back(EGL_SURFACE_TYPE);
	switch (config.surfaceType)
	{
	case glu::RenderConfig::SURFACETYPE_DONT_CARE:
	frame_buffer_attribs.push_back(EGL_DONT_CARE);
	break;
	case glu::RenderConfig::SURFACETYPE_OFFSCREEN_NATIVE:
	break;
	case glu::RenderConfig::SURFACETYPE_OFFSCREEN_GENERIC:
	frame_buffer_attribs.push_back(EGL_PBUFFER_BIT);
	surface_attribs.push_back(EGL_WIDTH);
	surface_attribs.push_back(config.width);
	surface_attribs.push_back(EGL_HEIGHT);
	surface_attribs.push_back(config.height);
	break;
	case glu::RenderConfig::SURFACETYPE_WINDOW:
	throw tcu::NotSupportedError("surfaceless platform does not support --deqp-surface-type=window");
	case glu::RenderConfig::SURFACETYPE_LAST:
	TCU_CHECK_INTERNAL(false);
	}

	surface_attribs.push_back(EGL_NONE);

	frame_buffer_attribs.push_back(EGL_RED_SIZE);
	frame_buffer_attribs.push_back(config.redBits);

	frame_buffer_attribs.push_back(EGL_GREEN_SIZE);
	frame_buffer_attribs.push_back(config.greenBits);

	frame_buffer_attribs.push_back(EGL_BLUE_SIZE);
	frame_buffer_attribs.push_back(config.blueBits);

	frame_buffer_attribs.push_back(EGL_ALPHA_SIZE);
	frame_buffer_attribs.push_back(config.alphaBits);

	frame_buffer_attribs.push_back(EGL_DEPTH_SIZE);
	frame_buffer_attribs.push_back(config.depthBits);

	frame_buffer_attribs.push_back(EGL_STENCIL_SIZE);
	frame_buffer_attribs.push_back(config.stencilBits);

	frame_buffer_attribs.push_back(EGL_NONE);

	if (!eglChooseConfig(m_eglDisplay, &frame_buffer_attribs[0], NULL, 0, &num_configs))
	throw tcu::ResourceError("surfaceless couldn't find any config");

	if (!eglChooseConfig(m_eglDisplay, &frame_buffer_attribs[0], &egl_config, 1, &num_configs))
	throw tcu::ResourceError("surfaceless couldn't find any config");

	switch (config.surfaceType)
	{
	case glu::RenderConfig::SURFACETYPE_DONT_CARE:
	egl_surface = EGL_NO_SURFACE;
	break;
	case glu::RenderConfig::SURFACETYPE_OFFSCREEN_GENERIC:
	egl_surface = eglCreatePbufferSurface(m_eglDisplay, egl_config, &surface_attribs[0]);
	break;
	}

	context_attribs.push_back(EGL_CONTEXT_MAJOR_VERSION_KHR);
	context_attribs.push_back(contextType.getMajorVersion());
	context_attribs.push_back(EGL_CONTEXT_MINOR_VERSION_KHR);
	context_attribs.push_back(contextType.getMinorVersion());

	switch (contextType.getProfile())
	{
	case glu::PROFILE_ES:
	EGLU_CHECK_CALL(m_egl, bindAPI(EGL_OPENGL_ES_API));
	break;
	case glu::PROFILE_CORE:
	EGLU_CHECK_CALL(m_egl, bindAPI(EGL_OPENGL_API));
	context_attribs.push_back(EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR);
	context_attribs.push_back(EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR);
	break;
	case glu::PROFILE_COMPATIBILITY:
	EGLU_CHECK_CALL(m_egl, bindAPI(EGL_OPENGL_API));
	context_attribs.push_back(EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR);
	context_attribs.push_back(EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR);
	break;
	case glu::PROFILE_LAST:
	TCU_CHECK_INTERNAL(false);
	}

	if ((contextType.getFlags() & glu::CONTEXT_DEBUG) != 0)
	flags \|= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;

	if ((contextType.getFlags() & glu::CONTEXT_ROBUST) != 0)
	flags \|= EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR;

	if ((contextType.getFlags() & glu::CONTEXT_FORWARD_COMPATIBLE) != 0)
	flags \|= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;

	context_attribs.push_back(EGL_CONTEXT_FLAGS_KHR);
	context_attribs.push_back(flags);

	context_attribs.push_back(EGL_NONE);

	m_eglContext = m_egl.createContext(m_eglDisplay, egl_config, EGL_NO_CONTEXT, &context_attribs[0]);
	EGLU_CHECK_MSG(m_egl, "eglCreateContext()");
	if (!m_eglContext)
	throw tcu::ResourceError("eglCreateContext failed");

	EGLU_CHECK_CALL(m_egl, makeCurrent(m_eglDisplay, egl_surface, egl_surface, m_eglContext));

	if ((eglMajorVersion == 1 && eglMinorVersion >= 5) \|\|
	isEGLExtensionSupported(m_egl, m_eglDisplay, "EGL_KHR_get_all_proc_addresses") \|\|
	isEGLExtensionSupported(m_egl, EGL_NO_DISPLAY, "EGL_KHR_client_get_all_proc_addresses"))
	{
	// Use eglGetProcAddress() for core functions
	GetProcFuncLoader funcLoader(m_egl);
	glu::initCoreFunctions(&m_glFunctions, &funcLoader, contextType.getAPI());
	}
	#if !defined(DEQP_GLES2_RUNTIME_LOAD)
	else if (contextType.getAPI() == glu::ApiType::es(2,0))
	{
	glw::initES20Direct(&m_glFunctions);
	}
	#endif
	#if !defined(DEQP_GLES3_RUNTIME_LOAD)
	else if (contextType.getAPI() == glu::ApiType::es(3,0))
	{
	glw::initES30Direct(&m_glFunctions);
	}
	#endif
	else
	{
	const char* libraryPath = NULL;

	if (glu::isContextTypeES(contextType))
	{
	if (contextType.getMinorVersion() <= 2)
	libraryPath = DEQP_GLES2_LIBRARY_PATH;
	else
	libraryPath = DEQP_GLES3_LIBRARY_PATH;
	}
	else
	{
	libraryPath = DEQP_OPENGL_LIBRARY_PATH;
	}

	m_glLibrary = new de::DynamicLibrary(libraryPath);

	DynamicFuncLoader funcLoader(m_glLibrary);
	glu::initCoreFunctions(&m_glFunctions, &funcLoader, contextType.getAPI());
	}

	{
	GetProcFuncLoader extLoader(m_egl);
	glu::initExtensionFunctions(&m_glFunctions, &extLoader, contextType.getAPI());
	}
	}

	EglRenderContext::~EglRenderContext(void)
	{
	try
	{
	if (m_eglDisplay != EGL_NO_DISPLAY)
	{
	EGLU_CHECK_CALL(m_egl, makeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT));

	if (m_eglContext != EGL_NO_CONTEXT)
	EGLU_CHECK_CALL(m_egl, destroyContext(m_eglDisplay, m_eglContext));
	}

	EGLU_CHECK_CALL(m_egl, terminate(m_eglDisplay));
	}
	catch (...)
	{
	}
	}

	const tcu::RenderTarget& EglRenderContext::getRenderTarget(void) const
	{
	return m_renderTarget;
	}

	void EglRenderContext::postIterate(void)
	{
	this->getFunctions().finish();
	}

	} // namespace surfaceless
	} // namespace tcu

	tcu::Platform* createPlatform(void)
	{
	return new tcu::surfaceless::Platform();
	}