EGLWindow.cpp

Branch :
Show log
Commit
Author : Jamie Madill
Date : 2020-02-19 09:39:44
Hash : ce4918f1
Message : Vulkan: Sanitize Images & Buffers with non-zero values. Only enabled for specific tests at the moment. This CL allows our tests to sanitizes memory for the robust resource access extension. It is quite slow so should not be enabled by default. Only works for 1 level 2D color textures and buffers. Makes several flaky robust resource initialization tests consistently fail. Controlled via an angle::Feature in FeaturesVk. It works by initializing memory to an abitrary non-zero value: - if newly allocated memory is mappable, we map it in init and set it - if a buffer or texture can be a transfer destination, we use a staging resource - otherwise we don't attempt to initialize the resource. Bug: angleproject:4384 Change-Id: I9b4f347bfcddf3096f491ed0243bef86837feaa0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2043271 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Cody Northrop <cnorthrop@google.com>
util/EGLWindow.cpp
//
// Copyright 2013 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.
//

#include "util/EGLWindow.h"

#include <cassert>
#include <iostream>
#include <vector>

#include <string.h>

#include "common/system_utils.h"
#include "platform/Platform.h"
#include "util/OSWindow.h"

// ConfigParameters implementation.
ConfigParameters::ConfigParameters()
    : redBits(-1),
      greenBits(-1),
      blueBits(-1),
      alphaBits(-1),
      depthBits(-1),
      stencilBits(-1),
      componentType(EGL_COLOR_COMPONENT_TYPE_FIXED_EXT),
      multisample(false),
      debug(false),
      noError(false),
      bindGeneratesResource(true),
      clientArraysEnabled(true),
      robustAccess(false),
      samples(-1),
      resetStrategy(EGL_NO_RESET_NOTIFICATION_EXT)
{}

ConfigParameters::~ConfigParameters() = default;

void ConfigParameters::reset()
{
    *this = ConfigParameters();
}

// GLWindowBase implementation.
GLWindowBase::GLWindowBase(EGLint glesMajorVersion, EGLint glesMinorVersion)
    : mClientMajorVersion(glesMajorVersion), mClientMinorVersion(glesMinorVersion)
{}

GLWindowBase::~GLWindowBase() = default;

// EGLWindow implementation.
EGLWindow::EGLWindow(EGLint glesMajorVersion, EGLint glesMinorVersion)
    : GLWindowBase(glesMajorVersion, glesMinorVersion),
      mConfig(0),
      mDisplay(EGL_NO_DISPLAY),
      mSurface(EGL_NO_SURFACE),
      mContext(EGL_NO_CONTEXT),
      mEGLMajorVersion(0),
      mEGLMinorVersion(0)
{}

EGLWindow::~EGLWindow()
{
    destroyGL();
}

void EGLWindow::swap()
{
    eglSwapBuffers(mDisplay, mSurface);
}

EGLConfig EGLWindow::getConfig() const
{
    return mConfig;
}

EGLDisplay EGLWindow::getDisplay() const
{
    return mDisplay;
}

EGLSurface EGLWindow::getSurface() const
{
    return mSurface;
}

EGLContext EGLWindow::getContext() const
{
    return mContext;
}

bool EGLWindow::initializeGL(OSWindow *osWindow,
                             angle::Library *glWindowingLibrary,
                             const EGLPlatformParameters &platformParams,
                             const ConfigParameters &configParams)
{
    if (!initializeDisplay(osWindow, glWindowingLibrary, platformParams))
        return false;
    if (!initializeSurface(osWindow, glWindowingLibrary, configParams))
        return false;
    if (!initializeContext())
        return false;
    return true;
}

bool EGLWindow::initializeDisplay(OSWindow *osWindow,
                                  angle::Library *glWindowingLibrary,
                                  const EGLPlatformParameters &params)
{
#if defined(ANGLE_USE_UTIL_LOADER)
    PFNEGLGETPROCADDRESSPROC getProcAddress;
    glWindowingLibrary->getAs("eglGetProcAddress", &getProcAddress);
    if (!getProcAddress)
    {
        return false;
    }

    // Likely we will need to use a fallback to Library::getAs on non-ANGLE platforms.
    angle::LoadEGL(getProcAddress);
#endif  // defined(ANGLE_USE_UTIL_LOADER)

    const char *extensionString =
        static_cast<const char *>(eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS));

    std::vector<EGLAttrib> displayAttributes;
    displayAttributes.push_back(EGL_PLATFORM_ANGLE_TYPE_ANGLE);
    displayAttributes.push_back(params.renderer);
    displayAttributes.push_back(EGL_PLATFORM_ANGLE_MAX_VERSION_MAJOR_ANGLE);
    displayAttributes.push_back(params.majorVersion);
    displayAttributes.push_back(EGL_PLATFORM_ANGLE_MAX_VERSION_MINOR_ANGLE);
    displayAttributes.push_back(params.minorVersion);

    if (params.deviceType != EGL_DONT_CARE)
    {
        displayAttributes.push_back(EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE);
        displayAttributes.push_back(params.deviceType);
    }

    if (params.presentPath != EGL_DONT_CARE)
    {
        if (strstr(extensionString, "EGL_ANGLE_experimental_present_path") == nullptr)
        {
            destroyGL();
            return false;
        }

        displayAttributes.push_back(EGL_EXPERIMENTAL_PRESENT_PATH_ANGLE);
        displayAttributes.push_back(params.presentPath);
    }

    // Set debug layer settings if requested.
    if (params.debugLayersEnabled != EGL_DONT_CARE)
    {
        displayAttributes.push_back(EGL_PLATFORM_ANGLE_DEBUG_LAYERS_ENABLED_ANGLE);
        displayAttributes.push_back(params.debugLayersEnabled);
    }

    if (params.contextVirtualization != EGL_DONT_CARE)
    {
        displayAttributes.push_back(EGL_PLATFORM_ANGLE_CONTEXT_VIRTUALIZATION_ANGLE);
        displayAttributes.push_back(params.contextVirtualization);
    }

    if (params.platformMethods)
    {
        static_assert(sizeof(EGLAttrib) == sizeof(params.platformMethods),
                      "Unexpected pointer size");
        displayAttributes.push_back(EGL_PLATFORM_ANGLE_PLATFORM_METHODS_ANGLEX);
        displayAttributes.push_back(reinterpret_cast<EGLAttrib>(params.platformMethods));
    }

    std::vector<const char *> disabledFeatureOverrides;
    std::vector<const char *> enabledFeatureOverrides;

    if (params.transformFeedbackFeature == EGL_FALSE)
    {
        disabledFeatureOverrides.push_back("supports_transform_feedback_extension");
        disabledFeatureOverrides.push_back("emulate_transform_feedback");
    }

    if (params.allocateNonZeroMemoryFeature == EGL_TRUE)
    {
        enabledFeatureOverrides.push_back("allocate_non_zero_memory");
    }
    else if (params.allocateNonZeroMemoryFeature == EGL_FALSE)
    {
        disabledFeatureOverrides.push_back("allocate_non_zero_memory");
    }

    if (!disabledFeatureOverrides.empty())
    {
        if (strstr(extensionString, "EGL_ANGLE_feature_control") == nullptr)
        {
            std::cout << "Missing EGL_ANGLE_feature_control.\n";
            destroyGL();
            return false;
        }

        disabledFeatureOverrides.push_back(nullptr);

        displayAttributes.push_back(EGL_FEATURE_OVERRIDES_DISABLED_ANGLE);
        displayAttributes.push_back(reinterpret_cast<EGLAttrib>(disabledFeatureOverrides.data()));
    }

    if (!enabledFeatureOverrides.empty())
    {
        if (strstr(extensionString, "EGL_ANGLE_feature_control") == nullptr)
        {
            std::cout << "Missing EGL_ANGLE_feature_control.\n";
            destroyGL();
            return false;
        }

        enabledFeatureOverrides.push_back(nullptr);

        displayAttributes.push_back(EGL_FEATURE_OVERRIDES_ENABLED_ANGLE);
        displayAttributes.push_back(reinterpret_cast<EGLAttrib>(enabledFeatureOverrides.data()));
    }

    displayAttributes.push_back(EGL_NONE);

    mDisplay = eglGetPlatformDisplay(EGL_PLATFORM_ANGLE_ANGLE,
                                     reinterpret_cast<void *>(osWindow->getNativeDisplay()),
                                     &displayAttributes[0]);
    if (mDisplay == EGL_NO_DISPLAY)
    {
        destroyGL();
        return false;
    }

    if (eglInitialize(mDisplay, &mEGLMajorVersion, &mEGLMinorVersion) == EGL_FALSE)
    {
        destroyGL();
        return false;
    }

    mPlatform = params;
    return true;
}

bool EGLWindow::initializeSurface(OSWindow *osWindow,
                                  angle::Library *glWindowingLibrary,
                                  const ConfigParameters &params)
{
    mConfigParams                 = params;
    const char *displayExtensions = eglQueryString(mDisplay, EGL_EXTENSIONS);

    std::vector<EGLint> configAttributes = {
        EGL_RED_SIZE,
        (mConfigParams.redBits >= 0) ? mConfigParams.redBits : EGL_DONT_CARE,
        EGL_GREEN_SIZE,
        (mConfigParams.greenBits >= 0) ? mConfigParams.greenBits : EGL_DONT_CARE,
        EGL_BLUE_SIZE,
        (mConfigParams.blueBits >= 0) ? mConfigParams.blueBits : EGL_DONT_CARE,
        EGL_ALPHA_SIZE,
        (mConfigParams.alphaBits >= 0) ? mConfigParams.alphaBits : EGL_DONT_CARE,
        EGL_DEPTH_SIZE,
        (mConfigParams.depthBits >= 0) ? mConfigParams.depthBits : EGL_DONT_CARE,
        EGL_STENCIL_SIZE,
        (mConfigParams.stencilBits >= 0) ? mConfigParams.stencilBits : EGL_DONT_CARE,
        EGL_SAMPLE_BUFFERS,
        mConfigParams.multisample ? 1 : 0,
        EGL_SAMPLES,
        (mConfigParams.samples >= 0) ? mConfigParams.samples : EGL_DONT_CARE,
    };

    // Add dynamic attributes
    bool hasPixelFormatFloat = strstr(displayExtensions, "EGL_EXT_pixel_format_float") != nullptr;
    if (!hasPixelFormatFloat && mConfigParams.componentType != EGL_COLOR_COMPONENT_TYPE_FIXED_EXT)
    {
        destroyGL();
        return false;
    }
    if (hasPixelFormatFloat)
    {
        configAttributes.push_back(EGL_COLOR_COMPONENT_TYPE_EXT);
        configAttributes.push_back(mConfigParams.componentType);
    }

    // Finish the attribute list
    configAttributes.push_back(EGL_NONE);

    if (!FindEGLConfig(mDisplay, configAttributes.data(), &mConfig))
    {
        std::cout << "Could not find a suitable EGL config!" << std::endl;
        destroyGL();
        return false;
    }

    eglGetConfigAttrib(mDisplay, mConfig, EGL_RED_SIZE, &mConfigParams.redBits);
    eglGetConfigAttrib(mDisplay, mConfig, EGL_GREEN_SIZE, &mConfigParams.greenBits);
    eglGetConfigAttrib(mDisplay, mConfig, EGL_BLUE_SIZE, &mConfigParams.blueBits);
    eglGetConfigAttrib(mDisplay, mConfig, EGL_ALPHA_SIZE, &mConfigParams.alphaBits);
    eglGetConfigAttrib(mDisplay, mConfig, EGL_DEPTH_SIZE, &mConfigParams.depthBits);
    eglGetConfigAttrib(mDisplay, mConfig, EGL_STENCIL_SIZE, &mConfigParams.stencilBits);
    eglGetConfigAttrib(mDisplay, mConfig, EGL_SAMPLES, &mConfigParams.samples);

    std::vector<EGLint> surfaceAttributes;
    if (strstr(displayExtensions, "EGL_NV_post_sub_buffer") != nullptr)
    {
        surfaceAttributes.push_back(EGL_POST_SUB_BUFFER_SUPPORTED_NV);
        surfaceAttributes.push_back(EGL_TRUE);
    }

    bool hasRobustResourceInit =
        strstr(displayExtensions, "EGL_ANGLE_robust_resource_initialization") != nullptr;
    if (hasRobustResourceInit && mConfigParams.robustResourceInit.valid())
    {
        surfaceAttributes.push_back(EGL_ROBUST_RESOURCE_INITIALIZATION_ANGLE);
        surfaceAttributes.push_back(mConfigParams.robustResourceInit.value() ? EGL_TRUE
                                                                             : EGL_FALSE);
    }

    surfaceAttributes.push_back(EGL_NONE);

    osWindow->resetNativeWindow();

    mSurface = eglCreateWindowSurface(mDisplay, mConfig, osWindow->getNativeWindow(),
                                      &surfaceAttributes[0]);
    if (eglGetError() != EGL_SUCCESS || (mSurface == EGL_NO_SURFACE))
    {
        destroyGL();
        return false;
    }

#if defined(ANGLE_USE_UTIL_LOADER)
    angle::LoadGLES(eglGetProcAddress);
#endif  // defined(ANGLE_USE_UTIL_LOADER)

    return true;
}

EGLContext EGLWindow::createContext(EGLContext share) const
{
    const char *displayExtensions = eglQueryString(mDisplay, EGL_EXTENSIONS);

    // EGL_KHR_create_context is required to request a ES3+ context.
    bool hasKHRCreateContext = strstr(displayExtensions, "EGL_KHR_create_context") != nullptr;
    if (mClientMajorVersion > 2 && !(mEGLMajorVersion > 1 || mEGLMinorVersion >= 5) &&
        !hasKHRCreateContext)
    {
        std::cerr << "EGL_KHR_create_context incompatibility.\n";
        return EGL_NO_CONTEXT;
    }

    bool hasWebGLCompatibility =
        strstr(displayExtensions, "EGL_ANGLE_create_context_webgl_compatibility") != nullptr;
    if (mConfigParams.webGLCompatibility.valid() && !hasWebGLCompatibility)
    {
        std::cerr << "EGL_ANGLE_create_context_webgl_compatibility missing.\n";
        return EGL_NO_CONTEXT;
    }

    bool hasCreateContextExtensionsEnabled =
        strstr(displayExtensions, "EGL_ANGLE_create_context_extensions_enabled") != nullptr;
    if (mConfigParams.extensionsEnabled.valid() && !hasCreateContextExtensionsEnabled)
    {
        std::cerr << "EGL_ANGLE_create_context_extensions_enabled missing.\n";
        return EGL_NO_CONTEXT;
    }

    bool hasRobustness = strstr(displayExtensions, "EGL_EXT_create_context_robustness") != nullptr;
    if ((mConfigParams.robustAccess ||
         mConfigParams.resetStrategy != EGL_NO_RESET_NOTIFICATION_EXT) &&
        !hasRobustness)
    {
        std::cerr << "EGL_EXT_create_context_robustness missing.\n";
        return EGL_NO_CONTEXT;
    }

    bool hasBindGeneratesResource =
        strstr(displayExtensions, "EGL_CHROMIUM_create_context_bind_generates_resource") != nullptr;
    if (!mConfigParams.bindGeneratesResource && !hasBindGeneratesResource)
    {
        std::cerr << "EGL_CHROMIUM_create_context_bind_generates_resource missing.\n";
        return EGL_NO_CONTEXT;
    }

    bool hasClientArraysExtension =
        strstr(displayExtensions, "EGL_ANGLE_create_context_client_arrays") != nullptr;
    if (!mConfigParams.clientArraysEnabled && !hasClientArraysExtension)
    {
        // Non-default state requested without the extension present
        std::cerr << "EGL_ANGLE_create_context_client_arrays missing.\n";
        return EGL_NO_CONTEXT;
    }

    bool hasProgramCacheControlExtension =
        strstr(displayExtensions, "EGL_ANGLE_program_cache_control ") != nullptr;
    if (mConfigParams.contextProgramCacheEnabled.valid() && !hasProgramCacheControlExtension)
    {
        std::cerr << "EGL_ANGLE_program_cache_control missing.\n";
        return EGL_NO_CONTEXT;
    }

    bool hasBackwardsCompatibleContextExtension =
        strstr(displayExtensions, "EGL_ANGLE_create_context_backwards_compatible") != nullptr;
    if (!hasProgramCacheControlExtension)
    {
        std::cerr << "EGL_ANGLE_create_context_backwards_compatible missing.\n";
        return EGL_NO_CONTEXT;
    }

    eglBindAPI(EGL_OPENGL_ES_API);
    if (eglGetError() != EGL_SUCCESS)
    {
        std::cerr << "Error on eglBindAPI.\n";
        return EGL_NO_CONTEXT;
    }

    std::vector<EGLint> contextAttributes;
    if (hasKHRCreateContext)
    {
        contextAttributes.push_back(EGL_CONTEXT_MAJOR_VERSION_KHR);
        contextAttributes.push_back(mClientMajorVersion);

        contextAttributes.push_back(EGL_CONTEXT_MINOR_VERSION_KHR);
        contextAttributes.push_back(mClientMinorVersion);

        contextAttributes.push_back(EGL_CONTEXT_OPENGL_DEBUG);
        contextAttributes.push_back(mConfigParams.debug ? EGL_TRUE : EGL_FALSE);

        // TODO(jmadill): Check for the extension string.
        // bool hasKHRCreateContextNoError = strstr(displayExtensions,
        // "EGL_KHR_create_context_no_error") != nullptr;

        contextAttributes.push_back(EGL_CONTEXT_OPENGL_NO_ERROR_KHR);
        contextAttributes.push_back(mConfigParams.noError ? EGL_TRUE : EGL_FALSE);

        if (mConfigParams.webGLCompatibility.valid())
        {
            contextAttributes.push_back(EGL_CONTEXT_WEBGL_COMPATIBILITY_ANGLE);
            contextAttributes.push_back(mConfigParams.webGLCompatibility.value() ? EGL_TRUE
                                                                                 : EGL_FALSE);
        }

        if (mConfigParams.extensionsEnabled.valid())
        {
            contextAttributes.push_back(EGL_EXTENSIONS_ENABLED_ANGLE);
            contextAttributes.push_back(mConfigParams.extensionsEnabled.value() ? EGL_TRUE
                                                                                : EGL_FALSE);
        }

        if (hasRobustness)
        {
            contextAttributes.push_back(EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT);
            contextAttributes.push_back(mConfigParams.robustAccess ? EGL_TRUE : EGL_FALSE);

            contextAttributes.push_back(EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT);
            contextAttributes.push_back(mConfigParams.resetStrategy);
        }

        if (hasBindGeneratesResource)
        {
            contextAttributes.push_back(EGL_CONTEXT_BIND_GENERATES_RESOURCE_CHROMIUM);
            contextAttributes.push_back(mConfigParams.bindGeneratesResource ? EGL_TRUE : EGL_FALSE);
        }

        if (hasClientArraysExtension)
        {
            contextAttributes.push_back(EGL_CONTEXT_CLIENT_ARRAYS_ENABLED_ANGLE);
            contextAttributes.push_back(mConfigParams.clientArraysEnabled ? EGL_TRUE : EGL_FALSE);
        }

        if (mConfigParams.contextProgramCacheEnabled.valid())
        {
            contextAttributes.push_back(EGL_CONTEXT_PROGRAM_BINARY_CACHE_ENABLED_ANGLE);
            contextAttributes.push_back(
                mConfigParams.contextProgramCacheEnabled.value() ? EGL_TRUE : EGL_FALSE);
        }

        if (hasBackwardsCompatibleContextExtension)
        {
            // Always request the exact context version that the config wants
            contextAttributes.push_back(EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE);
            contextAttributes.push_back(EGL_FALSE);
        }

        bool hasRobustResourceInit =
            strstr(displayExtensions, "EGL_ANGLE_robust_resource_initialization") != nullptr;
        if (hasRobustResourceInit && mConfigParams.robustResourceInit.valid())
        {
            contextAttributes.push_back(EGL_ROBUST_RESOURCE_INITIALIZATION_ANGLE);
            contextAttributes.push_back(mConfigParams.robustResourceInit.value() ? EGL_TRUE
                                                                                 : EGL_FALSE);
        }
    }
    contextAttributes.push_back(EGL_NONE);

    EGLContext context = eglCreateContext(mDisplay, mConfig, share, &contextAttributes[0]);
    if (eglGetError() != EGL_SUCCESS)
    {
        std::cerr << "Error on eglCreateContext.\n";
        return EGL_NO_CONTEXT;
    }

    return context;
}

bool EGLWindow::initializeContext()
{
    mContext = createContext(EGL_NO_CONTEXT);
    if (mContext == EGL_NO_CONTEXT)
    {
        destroyGL();
        return false;
    }

    if (!makeCurrent())
    {
        destroyGL();
        return false;
    }

    return true;
}

void EGLWindow::destroyGL()
{
    destroyContext();
    destroySurface();

    if (mDisplay != EGL_NO_DISPLAY)
    {
        eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
        eglTerminate(mDisplay);
        mDisplay = EGL_NO_DISPLAY;
    }
}

void EGLWindow::destroySurface()
{
    if (mSurface != EGL_NO_SURFACE)
    {
        eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
        assert(mDisplay != EGL_NO_DISPLAY);
        eglDestroySurface(mDisplay, mSurface);
        mSurface = EGL_NO_SURFACE;
    }
}

void EGLWindow::destroyContext()
{
    if (mContext != EGL_NO_CONTEXT)
    {
        eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
        assert(mDisplay != EGL_NO_DISPLAY);
        eglDestroyContext(mDisplay, mContext);
        mContext = EGL_NO_CONTEXT;
    }
}

bool EGLWindow::isGLInitialized() const
{
    return mSurface != EGL_NO_SURFACE && mContext != EGL_NO_CONTEXT && mDisplay != EGL_NO_DISPLAY;
}

// Find an EGLConfig that is an exact match for the specified attributes. EGL_FALSE is returned if
// the EGLConfig is found.  This indicates that the EGLConfig is not supported.
EGLBoolean EGLWindow::FindEGLConfig(EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *config)
{
    EGLint numConfigs = 0;
    eglGetConfigs(dpy, nullptr, 0, &numConfigs);
    std::vector<EGLConfig> allConfigs(numConfigs);
    eglGetConfigs(dpy, allConfigs.data(), static_cast<EGLint>(allConfigs.size()), &numConfigs);

    for (size_t i = 0; i < allConfigs.size(); i++)
    {
        bool matchFound = true;
        for (const EGLint *curAttrib = attrib_list; curAttrib[0] != EGL_NONE; curAttrib += 2)
        {
            if (curAttrib[1] == EGL_DONT_CARE)
            {
                continue;
            }

            EGLint actualValue = EGL_DONT_CARE;
            eglGetConfigAttrib(dpy, allConfigs[i], curAttrib[0], &actualValue);
            if (curAttrib[1] != actualValue)
            {
                matchFound = false;
                break;
            }
        }

        if (matchFound)
        {
            *config = allConfigs[i];
            return EGL_TRUE;
        }
    }

    return EGL_FALSE;
}

bool EGLWindow::makeCurrent()
{
    if (eglMakeCurrent(mDisplay, mSurface, mSurface, mContext) == EGL_FALSE ||
        eglGetError() != EGL_SUCCESS)
    {
        std::cerr << "Error during eglMakeCurrent.\n";
        return false;
    }

    return true;
}

bool EGLWindow::setSwapInterval(EGLint swapInterval)
{
    if (eglSwapInterval(mDisplay, swapInterval) == EGL_FALSE || eglGetError() != EGL_SUCCESS)
    {
        std::cerr << "Error during eglSwapInterval.\n";
        return false;
    }

    return true;
}

bool EGLWindow::hasError() const
{
    return eglGetError() != EGL_SUCCESS;
}

bool CheckExtensionExists(const char *allExtensions, const std::string &extName)
{
    const std::string paddedExtensions = std::string(" ") + allExtensions + std::string(" ");
    return paddedExtensions.find(std::string(" ") + extName + std::string(" ")) !=
           std::string::npos;
}

// static
void GLWindowBase::Delete(GLWindowBase **window)
{
    delete *window;
    *window = nullptr;
}

// static
EGLWindow *EGLWindow::New(EGLint glesMajorVersion, EGLint glesMinorVersion)
{
    return new EGLWindow(glesMajorVersion, glesMinorVersion);
}

// static
void EGLWindow::Delete(EGLWindow **window)
{
    delete *window;
    *window = nullptr;
}
kc3-lang/angle/util/EGLWindow.cpp

Commit

kc3-lang/angle /util/EGLWindow.cpp
