Display.cpp

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Author : Jamie Madill
Date : 2016-10-31 12:17:19
Hash : 60e6edfa
Message : Make ASSERT reference the conditional expression. This should prevent further unexpected bot breakage due to unreferenced variables in the ASSERT expression. Also remove the no longer needed variable referencing macro. BUG=angleproject:1586 Change-Id: I127695165bdfe39c51fe8d17e00daf6bf2fa8252 Reviewed-on: https://chromium-review.googlesource.com/404948 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>
src/libANGLE/Display.cpp
//
// Copyright (c) 2002-2014 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.
//

// Display.cpp: Implements the egl::Display class, representing the abstract
// display on which graphics are drawn. Implements EGLDisplay.
// [EGL 1.4] section 2.1.2 page 3.

#include "libANGLE/Display.h"

#include <algorithm>
#include <iterator>
#include <map>
#include <sstream>
#include <vector>

#include <platform/Platform.h>
#include <EGL/eglext.h>

#include "common/debug.h"
#include "common/mathutil.h"
#include "common/platform.h"
#include "common/utilities.h"
#include "libANGLE/Context.h"
#include "libANGLE/Device.h"
#include "libANGLE/histogram_macros.h"
#include "libANGLE/Image.h"
#include "libANGLE/Surface.h"
#include "libANGLE/Stream.h"
#include "libANGLE/renderer/DisplayImpl.h"
#include "libANGLE/renderer/ImageImpl.h"
#include "third_party/trace_event/trace_event.h"

#if defined(ANGLE_ENABLE_D3D9) || defined(ANGLE_ENABLE_D3D11)
#   include "libANGLE/renderer/d3d/DisplayD3D.h"
#endif

#if defined(ANGLE_ENABLE_OPENGL)
#   if defined(ANGLE_PLATFORM_WINDOWS)
#       include "libANGLE/renderer/gl/wgl/DisplayWGL.h"
#   elif defined(ANGLE_USE_X11)
#       include "libANGLE/renderer/gl/glx/DisplayGLX.h"
#   elif defined(ANGLE_PLATFORM_APPLE)
#       include "libANGLE/renderer/gl/cgl/DisplayCGL.h"
#   elif defined(ANGLE_USE_OZONE)
#       include "libANGLE/renderer/gl/egl/ozone/DisplayOzone.h"
#   elif defined(ANGLE_PLATFORM_ANDROID)
#       include "libANGLE/renderer/gl/egl/android/DisplayAndroid.h"
#   else
#       error Unsupported OpenGL platform.
#   endif
#endif

#if defined(ANGLE_ENABLE_NULL)
#include "libANGLE/renderer/null/DisplayNULL.h"
#endif

namespace egl
{

namespace
{

class DefaultPlatform : public angle::Platform
{
public:
    DefaultPlatform() {}
    ~DefaultPlatform() override {}
};

DefaultPlatform *defaultPlatform = nullptr;

void InitDefaultPlatformImpl()
{
    if (ANGLEPlatformCurrent() == nullptr)
    {
        if (defaultPlatform == nullptr)
        {
            defaultPlatform = new DefaultPlatform();
        }

        ANGLEPlatformInitialize(defaultPlatform);
    }
}

typedef std::map<EGLNativeWindowType, Surface*> WindowSurfaceMap;
// Get a map of all EGL window surfaces to validate that no window has more than one EGL surface
// associated with it.
static WindowSurfaceMap *GetWindowSurfaces()
{
    static WindowSurfaceMap windowSurfaces;
    return &windowSurfaces;
}

typedef std::map<EGLNativeDisplayType, Display *> ANGLEPlatformDisplayMap;
static ANGLEPlatformDisplayMap *GetANGLEPlatformDisplayMap()
{
    static ANGLEPlatformDisplayMap displays;
    return &displays;
}

typedef std::map<Device *, Display *> DevicePlatformDisplayMap;
static DevicePlatformDisplayMap *GetDevicePlatformDisplayMap()
{
    static DevicePlatformDisplayMap displays;
    return &displays;
}

rx::DisplayImpl *CreateDisplayFromDevice(Device *eglDevice)
{
    rx::DisplayImpl *impl = nullptr;

    switch (eglDevice->getType())
    {
#if defined(ANGLE_ENABLE_D3D11)
        case EGL_D3D11_DEVICE_ANGLE:
            impl = new rx::DisplayD3D();
            break;
#endif
#if defined(ANGLE_ENABLE_D3D9)
        case EGL_D3D9_DEVICE_ANGLE:
            // Currently the only way to get EGLDeviceEXT representing a D3D9 device
            // is to retrieve one from an already-existing EGLDisplay.
            // When eglGetPlatformDisplayEXT is called with a D3D9 EGLDeviceEXT,
            // the already-existing display should be returned.
            // Therefore this codepath to create a new display from the device
            // should never be hit.
            UNREACHABLE();
            break;
#endif
        default:
            UNREACHABLE();
            break;
    }

    ASSERT(impl != nullptr);
    return impl;
}

rx::DisplayImpl *CreateDisplayFromAttribs(const AttributeMap &attribMap)
{
    rx::DisplayImpl *impl = nullptr;
    EGLAttrib displayType =
        attribMap.get(EGL_PLATFORM_ANGLE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE);
    switch (displayType)
    {
      case EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE:
#if defined(ANGLE_ENABLE_D3D9) || defined(ANGLE_ENABLE_D3D11)
        // Default to D3D displays
        impl = new rx::DisplayD3D();
#elif defined(ANGLE_USE_X11)
        impl = new rx::DisplayGLX();
#elif defined(ANGLE_PLATFORM_APPLE)
        impl = new rx::DisplayCGL();
#elif defined(ANGLE_USE_OZONE)
        impl = new rx::DisplayOzone();
#elif defined(ANGLE_PLATFORM_ANDROID)
        impl = new rx::DisplayAndroid();
#else
        // No display available
        UNREACHABLE();
#endif
        break;

      case EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE:
      case EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE:
#if defined(ANGLE_ENABLE_D3D9) || defined(ANGLE_ENABLE_D3D11)
        impl = new rx::DisplayD3D();
#else
        // A D3D display was requested on a platform that doesn't support it
        UNREACHABLE();
#endif
        break;

      case EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE:
#if defined(ANGLE_ENABLE_OPENGL)
#if defined(ANGLE_PLATFORM_WINDOWS)
        impl = new rx::DisplayWGL();
#elif defined(ANGLE_USE_X11)
        impl = new rx::DisplayGLX();
#elif defined(ANGLE_PLATFORM_APPLE)
        impl = new rx::DisplayCGL();
#elif defined(ANGLE_USE_OZONE)
        // This might work but has never been tried, so disallow for now.
        impl = nullptr;
#elif defined(ANGLE_PLATFORM_ANDROID)
        // No GL support on this platform, fail display creation.
        impl = nullptr;
#else
#error Unsupported OpenGL platform.
#endif
#else
        UNREACHABLE();
#endif
        break;

#if defined(ANGLE_ENABLE_OPENGL)
      case EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE:
#if defined(ANGLE_PLATFORM_WINDOWS)
        impl = new rx::DisplayWGL();
#elif defined(ANGLE_USE_X11)
        impl = new rx::DisplayGLX();
#elif defined(ANGLE_USE_OZONE)
        impl = new rx::DisplayOzone();
#elif defined(ANGLE_PLATFORM_ANDROID)
        impl = new rx::DisplayAndroid();
#else
        // No GLES support on this platform, fail display creation.
        impl = nullptr;
#endif
        break;
#endif

#if defined(ANGLE_ENABLE_NULL)
      case EGL_PLATFORM_ANGLE_TYPE_NULL_ANGLE:
          impl = new rx::DisplayNULL();
          break;
#endif

      default:
        UNREACHABLE();
        break;
    }

    return impl;
}

}

Display *Display::GetDisplayFromAttribs(void *native_display, const AttributeMap &attribMap)
{
    // Initialize the global platform if not already
    InitDefaultPlatformImpl();

    Display *display = nullptr;

    EGLNativeDisplayType displayId = reinterpret_cast<EGLNativeDisplayType>(native_display);

    ANGLEPlatformDisplayMap *displays            = GetANGLEPlatformDisplayMap();
    ANGLEPlatformDisplayMap::const_iterator iter = displays->find(displayId);
    if (iter != displays->end())
    {
        display = iter->second;
    }

    if (display == nullptr)
    {
        // Validate the native display
        if (!Display::isValidNativeDisplay(displayId))
        {
            return NULL;
        }

        display = new Display(EGL_PLATFORM_ANGLE_ANGLE, displayId, nullptr);
        displays->insert(std::make_pair(displayId, display));
    }

    // Apply new attributes if the display is not initialized yet.
    if (!display->isInitialized())
    {
        rx::DisplayImpl *impl = CreateDisplayFromAttribs(attribMap);
        if (impl == nullptr)
        {
            // No valid display implementation for these attributes
            return nullptr;
        }

        display->setAttributes(impl, attribMap);
    }

    return display;
}

Display *Display::GetDisplayFromDevice(void *native_display)
{
    // Initialize the global platform if not already
    InitDefaultPlatformImpl();

    Display *display = nullptr;

    Device *eglDevice = reinterpret_cast<Device *>(native_display);
    ASSERT(Device::IsValidDevice(eglDevice));

    ANGLEPlatformDisplayMap *anglePlatformDisplays   = GetANGLEPlatformDisplayMap();
    DevicePlatformDisplayMap *devicePlatformDisplays = GetDevicePlatformDisplayMap();

    // First see if this eglDevice is in use by a Display created using ANGLE platform
    for (auto &displayMapEntry : *anglePlatformDisplays)
    {
        egl::Display *iterDisplay = displayMapEntry.second;
        if (iterDisplay->getDevice() == eglDevice)
        {
            display = iterDisplay;
        }
    }

    if (display == nullptr)
    {
        // See if the eglDevice is in use by a Display created using the DEVICE platform
        DevicePlatformDisplayMap::const_iterator iter = devicePlatformDisplays->find(eglDevice);
        if (iter != devicePlatformDisplays->end())
        {
            display = iter->second;
        }
    }

    if (display == nullptr)
    {
        // Otherwise create a new Display
        display = new Display(EGL_PLATFORM_DEVICE_EXT, 0, eglDevice);
        devicePlatformDisplays->insert(std::make_pair(eglDevice, display));
    }

    // Apply new attributes if the display is not initialized yet.
    if (!display->isInitialized())
    {
        rx::DisplayImpl *impl = CreateDisplayFromDevice(eglDevice);
        display->setAttributes(impl, egl::AttributeMap());
    }

    return display;
}

Display::Display(EGLenum platform, EGLNativeDisplayType displayId, Device *eglDevice)
    : mImplementation(nullptr),
      mDisplayId(displayId),
      mAttributeMap(),
      mConfigSet(),
      mContextSet(),
      mStreamSet(),
      mInitialized(false),
      mDeviceLost(false),
      mCaps(),
      mDisplayExtensions(),
      mDisplayExtensionString(),
      mVendorString(),
      mDevice(eglDevice),
      mPlatform(platform)
{
}

Display::~Display()
{
    terminate();

    if (mPlatform == EGL_PLATFORM_ANGLE_ANGLE)
    {
        ANGLEPlatformDisplayMap *displays      = GetANGLEPlatformDisplayMap();
        ANGLEPlatformDisplayMap::iterator iter = displays->find(mDisplayId);
        if (iter != displays->end())
        {
            displays->erase(iter);
        }
    }
    else if (mPlatform == EGL_PLATFORM_DEVICE_EXT)
    {
        DevicePlatformDisplayMap *displays      = GetDevicePlatformDisplayMap();
        DevicePlatformDisplayMap::iterator iter = displays->find(mDevice);
        if (iter != displays->end())
        {
            displays->erase(iter);
        }
    }
    else
    {
        UNREACHABLE();
    }

    SafeDelete(mDevice);
    SafeDelete(mImplementation);
}

void Display::setAttributes(rx::DisplayImpl *impl, const AttributeMap &attribMap)
{
    ASSERT(!mInitialized);

    ASSERT(impl != nullptr);
    SafeDelete(mImplementation);
    mImplementation = impl;

    mAttributeMap = attribMap;
}

Error Display::initialize()
{
    // Re-initialize default platform if it's needed
    InitDefaultPlatformImpl();

    SCOPED_ANGLE_HISTOGRAM_TIMER("GPU.ANGLE.DisplayInitializeMS");
    TRACE_EVENT0("gpu.angle", "egl::Display::initialize");

    ASSERT(mImplementation != nullptr);

    if (isInitialized())
    {
        return egl::Error(EGL_SUCCESS);
    }

    Error error = mImplementation->initialize(this);
    if (error.isError())
    {
        // Log extended error message here
        std::stringstream errorStream;
        errorStream << "ANGLE Display::initialize error " << error.getID() << ": "
                    << error.getMessage();
        ANGLEPlatformCurrent()->logError(errorStream.str().c_str());
        return error;
    }

    mCaps = mImplementation->getCaps();

    mConfigSet = mImplementation->generateConfigs();
    if (mConfigSet.size() == 0)
    {
        mImplementation->terminate();
        return Error(EGL_NOT_INITIALIZED);
    }

    initDisplayExtensions();
    initVendorString();

    // Populate the Display's EGLDeviceEXT if the Display wasn't created using one
    if (mPlatform != EGL_PLATFORM_DEVICE_EXT)
    {
        if (mDisplayExtensions.deviceQuery)
        {
            rx::DeviceImpl *impl = nullptr;
            ANGLE_TRY(mImplementation->getDevice(&impl));
            ANGLE_TRY(Device::CreateDevice(this, impl, &mDevice));
        }
        else
        {
            mDevice = nullptr;
        }
    }
    else
    {
        // For EGL_PLATFORM_DEVICE_EXT, mDevice should always be populated using
        // an external device
        ASSERT(mDevice != nullptr);
    }

    mInitialized = true;

    return egl::Error(EGL_SUCCESS);
}

void Display::terminate()
{
    makeCurrent(nullptr, nullptr, nullptr);

    while (!mContextSet.empty())
    {
        destroyContext(*mContextSet.begin());
    }

    while (!mImageSet.empty())
    {
        destroyImage(*mImageSet.begin());
    }

    while (!mStreamSet.empty())
    {
        destroyStream(*mStreamSet.begin());
    }

    while (!mImplementation->getSurfaceSet().empty())
    {
        destroySurface(*mImplementation->getSurfaceSet().begin());
    }

    mConfigSet.clear();

    if (mDevice != nullptr && mDevice->getOwningDisplay() != nullptr)
    {
        // Don't delete the device if it was created externally using eglCreateDeviceANGLE
        // We also shouldn't set it to null in case eglInitialize() is called again later
        SafeDelete(mDevice);
    }

    mImplementation->terminate();

    mInitialized = false;

    // Never de-init default platform.. terminate is not that final.
}

std::vector<const Config*> Display::getConfigs(const egl::AttributeMap &attribs) const
{
    return mConfigSet.filter(attribs);
}

bool Display::getConfigAttrib(const Config *configuration, EGLint attribute, EGLint *value)
{
    switch (attribute)
    {
      case EGL_BUFFER_SIZE:               *value = configuration->bufferSize;             break;
      case EGL_ALPHA_SIZE:                *value = configuration->alphaSize;              break;
      case EGL_BLUE_SIZE:                 *value = configuration->blueSize;               break;
      case EGL_GREEN_SIZE:                *value = configuration->greenSize;              break;
      case EGL_RED_SIZE:                  *value = configuration->redSize;                break;
      case EGL_DEPTH_SIZE:                *value = configuration->depthSize;              break;
      case EGL_STENCIL_SIZE:              *value = configuration->stencilSize;            break;
      case EGL_CONFIG_CAVEAT:             *value = configuration->configCaveat;           break;
      case EGL_CONFIG_ID:                 *value = configuration->configID;               break;
      case EGL_LEVEL:                     *value = configuration->level;                  break;
      case EGL_NATIVE_RENDERABLE:         *value = configuration->nativeRenderable;       break;
      case EGL_NATIVE_VISUAL_ID:          *value = configuration->nativeVisualID;         break;
      case EGL_NATIVE_VISUAL_TYPE:        *value = configuration->nativeVisualType;       break;
      case EGL_SAMPLES:                   *value = configuration->samples;                break;
      case EGL_SAMPLE_BUFFERS:            *value = configuration->sampleBuffers;          break;
      case EGL_SURFACE_TYPE:              *value = configuration->surfaceType;            break;
      case EGL_TRANSPARENT_TYPE:          *value = configuration->transparentType;        break;
      case EGL_TRANSPARENT_BLUE_VALUE:    *value = configuration->transparentBlueValue;   break;
      case EGL_TRANSPARENT_GREEN_VALUE:   *value = configuration->transparentGreenValue;  break;
      case EGL_TRANSPARENT_RED_VALUE:     *value = configuration->transparentRedValue;    break;
      case EGL_BIND_TO_TEXTURE_RGB:       *value = configuration->bindToTextureRGB;       break;
      case EGL_BIND_TO_TEXTURE_RGBA:      *value = configuration->bindToTextureRGBA;      break;
      case EGL_MIN_SWAP_INTERVAL:         *value = configuration->minSwapInterval;        break;
      case EGL_MAX_SWAP_INTERVAL:         *value = configuration->maxSwapInterval;        break;
      case EGL_LUMINANCE_SIZE:            *value = configuration->luminanceSize;          break;
      case EGL_ALPHA_MASK_SIZE:           *value = configuration->alphaMaskSize;          break;
      case EGL_COLOR_BUFFER_TYPE:         *value = configuration->colorBufferType;        break;
      case EGL_RENDERABLE_TYPE:           *value = configuration->renderableType;         break;
      case EGL_MATCH_NATIVE_PIXMAP:       *value = false; UNIMPLEMENTED();                break;
      case EGL_CONFORMANT:                *value = configuration->conformant;             break;
      case EGL_MAX_PBUFFER_WIDTH:         *value = configuration->maxPBufferWidth;        break;
      case EGL_MAX_PBUFFER_HEIGHT:        *value = configuration->maxPBufferHeight;       break;
      case EGL_MAX_PBUFFER_PIXELS:        *value = configuration->maxPBufferPixels;       break;

      case EGL_OPTIMAL_SURFACE_ORIENTATION_ANGLE:
          if (!getExtensions().surfaceOrientation)
          {
              return false;
          }
          *value = configuration->optimalOrientation;
          break;

      default:
        return false;
    }

    return true;
}

Error Display::createWindowSurface(const Config *configuration, EGLNativeWindowType window, const AttributeMap &attribs,
                                   Surface **outSurface)
{
    if (mImplementation->testDeviceLost())
    {
        ANGLE_TRY(restoreLostDevice());
    }

    std::unique_ptr<Surface> surface(
        new WindowSurface(mImplementation, configuration, window, attribs));
    ANGLE_TRY(surface->initialize());

    ASSERT(outSurface != nullptr);
    *outSurface = surface.release();
    mImplementation->getSurfaceSet().insert(*outSurface);

    WindowSurfaceMap *windowSurfaces = GetWindowSurfaces();
    ASSERT(windowSurfaces && windowSurfaces->find(window) == windowSurfaces->end());
    windowSurfaces->insert(std::make_pair(window, *outSurface));

    return egl::Error(EGL_SUCCESS);
}

Error Display::createPbufferSurface(const Config *configuration, const AttributeMap &attribs, Surface **outSurface)
{
    ASSERT(isInitialized());

    if (mImplementation->testDeviceLost())
    {
        ANGLE_TRY(restoreLostDevice());
    }

    std::unique_ptr<Surface> surface(new PbufferSurface(mImplementation, configuration, attribs));
    ANGLE_TRY(surface->initialize());

    ASSERT(outSurface != nullptr);
    *outSurface = surface.release();
    mImplementation->getSurfaceSet().insert(*outSurface);

    return egl::Error(EGL_SUCCESS);
}

Error Display::createPbufferFromClientBuffer(const Config *configuration,
                                             EGLenum buftype,
                                             EGLClientBuffer clientBuffer,
                                             const AttributeMap &attribs,
                                             Surface **outSurface)
{
    ASSERT(isInitialized());

    if (mImplementation->testDeviceLost())
    {
        ANGLE_TRY(restoreLostDevice());
    }

    std::unique_ptr<Surface> surface(
        new PbufferSurface(mImplementation, configuration, buftype, clientBuffer, attribs));
    ANGLE_TRY(surface->initialize());

    ASSERT(outSurface != nullptr);
    *outSurface = surface.release();
    mImplementation->getSurfaceSet().insert(*outSurface);

    return egl::Error(EGL_SUCCESS);
}

Error Display::createPixmapSurface(const Config *configuration, NativePixmapType nativePixmap, const AttributeMap &attribs,
                                   Surface **outSurface)
{
    ASSERT(isInitialized());

    if (mImplementation->testDeviceLost())
    {
        ANGLE_TRY(restoreLostDevice());
    }

    std::unique_ptr<Surface> surface(
        new PixmapSurface(mImplementation, configuration, nativePixmap, attribs));
    ANGLE_TRY(surface->initialize());

    ASSERT(outSurface != nullptr);
    *outSurface = surface.release();
    mImplementation->getSurfaceSet().insert(*outSurface);

    return egl::Error(EGL_SUCCESS);
}

Error Display::createImage(gl::Context *context,
                           EGLenum target,
                           EGLClientBuffer buffer,
                           const AttributeMap &attribs,
                           Image **outImage)
{
    ASSERT(isInitialized());

    if (mImplementation->testDeviceLost())
    {
        ANGLE_TRY(restoreLostDevice());
    }

    egl::ImageSibling *sibling = nullptr;
    if (IsTextureTarget(target))
    {
        sibling = context->getTexture(egl_gl::EGLClientBufferToGLObjectHandle(buffer));
    }
    else if (IsRenderbufferTarget(target))
    {
        sibling = context->getRenderbuffer(egl_gl::EGLClientBufferToGLObjectHandle(buffer));
    }
    else
    {
        UNREACHABLE();
    }
    ASSERT(sibling != nullptr);

    rx::ImageImpl *imageImpl = mImplementation->createImage(target, sibling, attribs);
    ASSERT(imageImpl != nullptr);

    ANGLE_TRY(imageImpl->initialize());

    Image *image = new Image(imageImpl, target, sibling, attribs);

    ASSERT(outImage != nullptr);
    *outImage = image;

    // Add this image to the list of all images and hold a ref to it.
    image->addRef();
    mImageSet.insert(image);

    return egl::Error(EGL_SUCCESS);
}

Error Display::createStream(const AttributeMap &attribs, Stream **outStream)
{
    ASSERT(isInitialized());

    Stream *stream = new Stream(this, attribs);

    ASSERT(stream != nullptr);
    mStreamSet.insert(stream);

    ASSERT(outStream != nullptr);
    *outStream = stream;

    return Error(EGL_SUCCESS);
}

Error Display::createContext(const Config *configuration, gl::Context *shareContext, const AttributeMap &attribs,
                             gl::Context **outContext)
{
    ASSERT(isInitialized());

    if (mImplementation->testDeviceLost())
    {
        ANGLE_TRY(restoreLostDevice());
    }

    gl::Context *context = new gl::Context(mImplementation, configuration, shareContext, attribs);

    ASSERT(context != nullptr);
    mContextSet.insert(context);

    ASSERT(outContext != nullptr);
    *outContext = context;
    return egl::Error(EGL_SUCCESS);
}

Error Display::makeCurrent(egl::Surface *drawSurface, egl::Surface *readSurface, gl::Context *context)
{
    ANGLE_TRY(mImplementation->makeCurrent(drawSurface, readSurface, context));

    if (context != nullptr && drawSurface != nullptr)
    {
        ASSERT(readSurface == drawSurface);
        context->makeCurrent(drawSurface);
    }

    return egl::Error(EGL_SUCCESS);
}

Error Display::restoreLostDevice()
{
    for (ContextSet::iterator ctx = mContextSet.begin(); ctx != mContextSet.end(); ctx++)
    {
        if ((*ctx)->isResetNotificationEnabled())
        {
            // If reset notifications have been requested, application must delete all contexts first
            return Error(EGL_CONTEXT_LOST);
        }
    }

    return mImplementation->restoreLostDevice();
}

void Display::destroySurface(Surface *surface)
{
    if (surface->getType() == EGL_WINDOW_BIT)
    {
        WindowSurfaceMap *windowSurfaces = GetWindowSurfaces();
        ASSERT(windowSurfaces);

        bool surfaceRemoved = false;
        for (WindowSurfaceMap::iterator iter = windowSurfaces->begin(); iter != windowSurfaces->end(); iter++)
        {
            if (iter->second == surface)
            {
                windowSurfaces->erase(iter);
                surfaceRemoved = true;
                break;
            }
        }

        ASSERT(surfaceRemoved);
    }

    mImplementation->destroySurface(surface);
}

void Display::destroyImage(egl::Image *image)
{
    auto iter = mImageSet.find(image);
    ASSERT(iter != mImageSet.end());
    (*iter)->release();
    mImageSet.erase(iter);
}

void Display::destroyStream(egl::Stream *stream)
{
    mStreamSet.erase(stream);
    SafeDelete(stream);
}

void Display::destroyContext(gl::Context *context)
{
    mContextSet.erase(context);
    SafeDelete(context);
}

bool Display::isDeviceLost() const
{
    ASSERT(isInitialized());
    return mDeviceLost;
}

bool Display::testDeviceLost()
{
    ASSERT(isInitialized());

    if (!mDeviceLost && mImplementation->testDeviceLost())
    {
        notifyDeviceLost();
    }

    return mDeviceLost;
}

void Display::notifyDeviceLost()
{
    if (mDeviceLost)
    {
        return;
    }

    for (ContextSet::iterator context = mContextSet.begin(); context != mContextSet.end(); context++)
    {
        (*context)->markContextLost();
    }

    mDeviceLost = true;
}

Error Display::waitClient() const
{
    return mImplementation->waitClient();
}

Error Display::waitNative(EGLint engine, egl::Surface *drawSurface, egl::Surface *readSurface) const
{
    return mImplementation->waitNative(engine, drawSurface, readSurface);
}

const Caps &Display::getCaps() const
{
    return mCaps;
}

bool Display::isInitialized() const
{
    return mInitialized;
}

bool Display::isValidConfig(const Config *config) const
{
    return mConfigSet.contains(config);
}

bool Display::isValidContext(const gl::Context *context) const
{
    return mContextSet.find(const_cast<gl::Context *>(context)) != mContextSet.end();
}

bool Display::isValidSurface(const Surface *surface) const
{
    return mImplementation->getSurfaceSet().find(const_cast<Surface *>(surface)) !=
           mImplementation->getSurfaceSet().end();
}

bool Display::isValidImage(const Image *image) const
{
    return mImageSet.find(const_cast<Image *>(image)) != mImageSet.end();
}

bool Display::isValidStream(const Stream *stream) const
{
    return mStreamSet.find(const_cast<Stream *>(stream)) != mStreamSet.end();
}

bool Display::hasExistingWindowSurface(EGLNativeWindowType window)
{
    WindowSurfaceMap *windowSurfaces = GetWindowSurfaces();
    ASSERT(windowSurfaces);

    return windowSurfaces->find(window) != windowSurfaces->end();
}

static ClientExtensions GenerateClientExtensions()
{
    ClientExtensions extensions;

    extensions.clientExtensions = true;
    extensions.platformBase = true;
    extensions.platformANGLE = true;

#if defined(ANGLE_ENABLE_D3D9) || defined(ANGLE_ENABLE_D3D11)
    extensions.platformANGLED3D = true;
    extensions.platformDevice   = true;
#endif

#if defined(ANGLE_ENABLE_OPENGL)
    extensions.platformANGLEOpenGL = true;
#endif

#if defined(ANGLE_ENABLE_NULL)
    extensions.platformANGLENULL = true;
#endif

#if defined(ANGLE_ENABLE_D3D11)
    extensions.deviceCreation      = true;
    extensions.deviceCreationD3D11 = true;
    extensions.experimentalPresentPath = true;
#endif

#if defined(ANGLE_USE_X11)
    extensions.x11Visual = true;
#endif

    extensions.clientGetAllProcAddresses = true;

    return extensions;
}

template <typename T>
static std::string GenerateExtensionsString(const T &extensions)
{
    std::vector<std::string> extensionsVector = extensions.getStrings();

    std::ostringstream stream;
    std::copy(extensionsVector.begin(), extensionsVector.end(), std::ostream_iterator<std::string>(stream, " "));
    return stream.str();
}

const ClientExtensions &Display::getClientExtensions()
{
    static const ClientExtensions clientExtensions = GenerateClientExtensions();
    return clientExtensions;
}

const std::string &Display::getClientExtensionString()
{
    static const std::string clientExtensionsString = GenerateExtensionsString(getClientExtensions());
    return clientExtensionsString;
}

void Display::initDisplayExtensions()
{
    mDisplayExtensions = mImplementation->getExtensions();

    // Some extensions are always available because they are implemented in the EGL layer.
    mDisplayExtensions.createContext        = true;
    mDisplayExtensions.createContextNoError = true;
    mDisplayExtensions.createContextWebGLCompatibility = true;
    mDisplayExtensions.createContextBindGeneratesResource = true;

    // Force EGL_KHR_get_all_proc_addresses on.
    mDisplayExtensions.getAllProcAddresses = true;

    mDisplayExtensionString = GenerateExtensionsString(mDisplayExtensions);
}

bool Display::isValidNativeWindow(EGLNativeWindowType window) const
{
    return mImplementation->isValidNativeWindow(window);
}

Error Display::validateClientBuffer(const Config *configuration,
                                    EGLenum buftype,
                                    EGLClientBuffer clientBuffer,
                                    const AttributeMap &attribs)
{
    return mImplementation->validateClientBuffer(configuration, buftype, clientBuffer, attribs);
}

bool Display::isValidDisplay(const egl::Display *display)
{
    const ANGLEPlatformDisplayMap *anglePlatformDisplayMap = GetANGLEPlatformDisplayMap();
    for (const auto &displayPair : *anglePlatformDisplayMap)
    {
        if (displayPair.second == display)
        {
            return true;
        }
    }

    const DevicePlatformDisplayMap *devicePlatformDisplayMap = GetDevicePlatformDisplayMap();
    for (const auto &displayPair : *devicePlatformDisplayMap)
    {
        if (displayPair.second == display)
        {
            return true;
        }
    }

    return false;
}

bool Display::isValidNativeDisplay(EGLNativeDisplayType display)
{
    // TODO(jmadill): handle this properly
    if (display == EGL_DEFAULT_DISPLAY)
    {
        return true;
    }

#if defined(ANGLE_PLATFORM_WINDOWS) && !defined(ANGLE_ENABLE_WINDOWS_STORE)
    if (display == EGL_SOFTWARE_DISPLAY_ANGLE ||
        display == EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE ||
        display == EGL_D3D11_ONLY_DISPLAY_ANGLE)
    {
        return true;
    }
    return (WindowFromDC(display) != NULL);
#else
    return true;
#endif
}

void Display::initVendorString()
{
    mVendorString = mImplementation->getVendorString();
}

const DisplayExtensions &Display::getExtensions() const
{
    return mDisplayExtensions;
}

const std::string &Display::getExtensionString() const
{
    return mDisplayExtensionString;
}

const std::string &Display::getVendorString() const
{
    return mVendorString;
}

Device *Display::getDevice() const
{
    return mDevice;
}

gl::Version Display::getMaxSupportedESVersion() const
{
    return mImplementation->getMaxSupportedESVersion();
}
}
kc3-lang/angle/src/libANGLE/Display.cpp

Commit

kc3-lang/angle /src/libANGLE/Display.cpp
