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

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  • Author : daniel@transgaming.com
    Date : 2011-09-26 18:25:45
    Hash : 1a1fe249
    Message : Sort EGL extension string Trac #18320 Signed-off-by: Nicolas Capens git-svn-id: https://angleproject.googlecode.com/svn/trunk@768 736b8ea6-26fd-11df-bfd4-992fa37f6226

  • src/libEGL/Display.cpp
  • //
    // Copyright (c) 2002-2011 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 "libEGL/Display.h"
    
    #include <algorithm>
    #include <map>
    #include <vector>
    
    #include "common/debug.h"
    #include "libGLESv2/mathutil.h"
    
    #include "libEGL/main.h"
    
    // Can also be enabled by defining FORCE_REF_RAST in the project's predefined macros
    #define REF_RAST 0
    
    // The "Debug This Pixel..." feature in PIX often fails when using the
    // D3D9Ex interfaces.  In order to get debug pixel to work on a Vista/Win 7
    // machine, define "ANGLE_ENABLE_D3D9EX=0" in your project file.
    #if !defined(ANGLE_ENABLE_D3D9EX)
    // Enables use of the IDirect3D9Ex interface, when available
    #define ANGLE_ENABLE_D3D9EX 1
    #endif // !defined(ANGLE_ENABLE_D3D9EX)
    
    namespace egl
    {
    namespace
    {
        typedef std::map<EGLNativeDisplayType, Display*> DisplayMap; 
        DisplayMap displays;
    }
    
    egl::Display *Display::getDisplay(EGLNativeDisplayType displayId)
    {
        if (displays.find(displayId) != displays.end())
        {
            return displays[displayId];
        }
    
        egl::Display *display = NULL;
    
        if (displayId == EGL_DEFAULT_DISPLAY)
        {
            display = new egl::Display(displayId, (HDC)NULL, false);
        }
        else if (displayId == EGL_SOFTWARE_DISPLAY_ANGLE)
        {
            display = new egl::Display(displayId, (HDC)NULL, true);
        }
        else
        {
            // FIXME: Check if displayId is a valid display device context
    
            display = new egl::Display(displayId, (HDC)displayId, false);
        }
    
        displays[displayId] = display;
        return display;
    }
    
    Display::Display(EGLNativeDisplayType displayId, HDC deviceContext, bool software) : mDc(deviceContext)
    {
        mD3d9Module = NULL;
        
        mD3d9 = NULL;
        mD3d9Ex = NULL;
        mDevice = NULL;
        mDeviceEx = NULL;
        mDeviceWindow = NULL;
    
        mAdapter = D3DADAPTER_DEFAULT;
    
        #if REF_RAST == 1 || defined(FORCE_REF_RAST)
            mDeviceType = D3DDEVTYPE_REF;
        #else
            mDeviceType = D3DDEVTYPE_HAL;
        #endif
    
        mMinSwapInterval = 1;
        mMaxSwapInterval = 1;
        mSoftwareDevice = software;
        mDisplayId = displayId;
    }
    
    Display::~Display()
    {
        terminate();
    
        DisplayMap::iterator thisDisplay = displays.find(mDisplayId);
    
        if (thisDisplay != displays.end())
        {
          displays.erase(thisDisplay);
        }
    }
    
    bool Display::initialize()
    {
        if (isInitialized())
        {
            return true;
        }
    
        if (mSoftwareDevice)
        {
          mD3d9Module = GetModuleHandle(TEXT("swiftshader_d3d9.dll"));
        } 
        else
        {
          mD3d9Module = GetModuleHandle(TEXT("d3d9.dll"));
        }
        if (mD3d9Module == NULL)
        {
            terminate();
            return false;
        }
    
        typedef HRESULT (WINAPI *Direct3DCreate9ExFunc)(UINT, IDirect3D9Ex**);
        Direct3DCreate9ExFunc Direct3DCreate9ExPtr = reinterpret_cast<Direct3DCreate9ExFunc>(GetProcAddress(mD3d9Module, "Direct3DCreate9Ex"));
    
        // Use Direct3D9Ex if available. Among other things, this version is less
        // inclined to report a lost context, for example when the user switches
        // desktop. Direct3D9Ex is available in Windows Vista and later if suitable drivers are available.
        if (ANGLE_ENABLE_D3D9EX && Direct3DCreate9ExPtr && SUCCEEDED(Direct3DCreate9ExPtr(D3D_SDK_VERSION, &mD3d9Ex)))
        {
            ASSERT(mD3d9Ex);
            mD3d9Ex->QueryInterface(IID_IDirect3D9, reinterpret_cast<void**>(&mD3d9));
            ASSERT(mD3d9);
        }
        else
        {
            mD3d9 = Direct3DCreate9(D3D_SDK_VERSION);
        }
    
        if (mD3d9)
        {
            if (mDc != NULL)
            {
            //  UNIMPLEMENTED();   // FIXME: Determine which adapter index the device context corresponds to
            }
    
            HRESULT result;
            
            // Give up on getting device caps after about one second.
            for (int i = 0; i < 10; ++i)
            {
                result = mD3d9->GetDeviceCaps(mAdapter, mDeviceType, &mDeviceCaps);
                
                if (SUCCEEDED(result))
                {
                    break;
                }
                else if (result == D3DERR_NOTAVAILABLE)
                {
                    Sleep(100);   // Give the driver some time to initialize/recover
                }
                else if (FAILED(result))   // D3DERR_OUTOFVIDEOMEMORY, E_OUTOFMEMORY, D3DERR_INVALIDDEVICE, or another error we can't recover from
                {
                    terminate();
                    return error(EGL_BAD_ALLOC, false);
                }
            }
    
            if (mDeviceCaps.PixelShaderVersion < D3DPS_VERSION(2, 0))
            {
                terminate();
                return error(EGL_NOT_INITIALIZED, false);
            }
    
            // When DirectX9 is running with an older DirectX8 driver, a StretchRect from a regular texture to a render target texture is not supported.
            // This is required by Texture2D::convertToRenderTarget.
            if ((mDeviceCaps.DevCaps2 & D3DDEVCAPS2_CAN_STRETCHRECT_FROM_TEXTURES) == 0)
            {
                terminate();
                return error(EGL_NOT_INITIALIZED, false);
            }
    
            mMinSwapInterval = 4;
            mMaxSwapInterval = 0;
    
            if (mDeviceCaps.PresentationIntervals & D3DPRESENT_INTERVAL_IMMEDIATE) {mMinSwapInterval = std::min(mMinSwapInterval, 0); mMaxSwapInterval = std::max(mMaxSwapInterval, 0);}
            if (mDeviceCaps.PresentationIntervals & D3DPRESENT_INTERVAL_ONE)       {mMinSwapInterval = std::min(mMinSwapInterval, 1); mMaxSwapInterval = std::max(mMaxSwapInterval, 1);}
            if (mDeviceCaps.PresentationIntervals & D3DPRESENT_INTERVAL_TWO)       {mMinSwapInterval = std::min(mMinSwapInterval, 2); mMaxSwapInterval = std::max(mMaxSwapInterval, 2);}
            if (mDeviceCaps.PresentationIntervals & D3DPRESENT_INTERVAL_THREE)     {mMinSwapInterval = std::min(mMinSwapInterval, 3); mMaxSwapInterval = std::max(mMaxSwapInterval, 3);}
            if (mDeviceCaps.PresentationIntervals & D3DPRESENT_INTERVAL_FOUR)      {mMinSwapInterval = std::min(mMinSwapInterval, 4); mMaxSwapInterval = std::max(mMaxSwapInterval, 4);}
    
            mD3d9->GetAdapterIdentifier(mAdapter, 0, &mAdapterIdentifier);
    
            const D3DFORMAT renderTargetFormats[] =
            {
                D3DFMT_A1R5G5B5,
            //  D3DFMT_A2R10G10B10,   // The color_ramp conformance test uses ReadPixels with UNSIGNED_BYTE causing it to think that rendering skipped a colour value.
                D3DFMT_A8R8G8B8,
                D3DFMT_R5G6B5,
            //  D3DFMT_X1R5G5B5,      // Has no compatible OpenGL ES renderbuffer format
                D3DFMT_X8R8G8B8
            };
    
            const D3DFORMAT depthStencilFormats[] =
            {
                D3DFMT_UNKNOWN,
            //  D3DFMT_D16_LOCKABLE,
                D3DFMT_D32,
            //  D3DFMT_D15S1,
                D3DFMT_D24S8,
                D3DFMT_D24X8,
            //  D3DFMT_D24X4S4,
                D3DFMT_D16,
            //  D3DFMT_D32F_LOCKABLE,
            //  D3DFMT_D24FS8
            };
    
            D3DDISPLAYMODE currentDisplayMode;
            mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
    
            ConfigSet configSet;
    
            for (int formatIndex = 0; formatIndex < sizeof(renderTargetFormats) / sizeof(D3DFORMAT); formatIndex++)
            {
                D3DFORMAT renderTargetFormat = renderTargetFormats[formatIndex];
    
                HRESULT result = mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_RENDERTARGET, D3DRTYPE_SURFACE, renderTargetFormat);
    
                if (SUCCEEDED(result))
                {
                    for (int depthStencilIndex = 0; depthStencilIndex < sizeof(depthStencilFormats) / sizeof(D3DFORMAT); depthStencilIndex++)
                    {
                        D3DFORMAT depthStencilFormat = depthStencilFormats[depthStencilIndex];
                        HRESULT result = D3D_OK;
                        
                        if(depthStencilFormat != D3DFMT_UNKNOWN)
                        {
                            result = mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_DEPTHSTENCIL, D3DRTYPE_SURFACE, depthStencilFormat);
                        }
    
                        if (SUCCEEDED(result))
                        {
                            if(depthStencilFormat != D3DFMT_UNKNOWN)
                            {
                                result = mD3d9->CheckDepthStencilMatch(mAdapter, mDeviceType, currentDisplayMode.Format, renderTargetFormat, depthStencilFormat);
                            }
    
                            if (SUCCEEDED(result))
                            {
                                // FIXME: enumerate multi-sampling
    
                                configSet.add(currentDisplayMode, mMinSwapInterval, mMaxSwapInterval, renderTargetFormat, depthStencilFormat, 0,
                                              mDeviceCaps.MaxTextureWidth, mDeviceCaps.MaxTextureHeight);
                            }
                        }
                    }
                }
            }
    
            // Give the sorted configs a unique ID and store them internally
            EGLint index = 1;
            for (ConfigSet::Iterator config = configSet.mSet.begin(); config != configSet.mSet.end(); config++)
            {
                Config configuration = *config;
                configuration.mConfigID = index;
                index++;
    
                mConfigSet.mSet.insert(configuration);
            }
        }
    
        if (!isInitialized())
        {
            terminate();
    
            return false;
        }
    
        initExtensionString();
    
        static const TCHAR windowName[] = TEXT("AngleHiddenWindow");
        static const TCHAR className[] = TEXT("STATIC");
    
        mDeviceWindow = CreateWindowEx(WS_EX_NOACTIVATE, className, windowName, WS_DISABLED | WS_POPUP, 0, 0, 1, 1, HWND_MESSAGE, NULL, GetModuleHandle(NULL), NULL);
    
        return true;
    }
    
    void Display::terminate()
    {
        while (!mSurfaceSet.empty())
        {
            destroySurface(*mSurfaceSet.begin());
        }
    
        while (!mContextSet.empty())
        {
            destroyContext(*mContextSet.begin());
        }
    
        if (mDevice)
        {
            // If the device is lost, reset it first to prevent leaving the driver in an unstable state
            if (isDeviceLost())
            {
                resetDevice();
            }
    
            mDevice->Release();
            mDevice = NULL;
        }
    
        if (mDeviceEx)
        {
            mDeviceEx->Release();
            mDeviceEx = NULL;
        }
    
        if (mD3d9)
        {
            mD3d9->Release();
            mD3d9 = NULL;
        }
    
        if (mDeviceWindow)
        {
            DestroyWindow(mDeviceWindow);
            mDeviceWindow = NULL;
        }
        
        if (mD3d9Ex)
        {
            mD3d9Ex->Release();
            mD3d9Ex = NULL;
        }
    
        if (mD3d9Module)
        {
            mD3d9Module = NULL;
        }
    }
    
    void Display::startScene()
    {
        if (!mSceneStarted)
        {
            long result = mDevice->BeginScene();
            if (SUCCEEDED(result)) {
                // This is defensive checking against the device being
                // lost at unexpected times.
                mSceneStarted = true;
            }
        }
    }
    
    void Display::endScene()
    {
        if (mSceneStarted)
        {
            // EndScene can fail if the device was lost, for example due
            // to a TDR during a draw call.
            mDevice->EndScene();
            mSceneStarted = false;
        }
    }
    
    bool Display::getConfigs(EGLConfig *configs, const EGLint *attribList, EGLint configSize, EGLint *numConfig)
    {
        return mConfigSet.getConfigs(configs, attribList, configSize, numConfig);
    }
    
    bool Display::getConfigAttrib(EGLConfig config, EGLint attribute, EGLint *value)
    {
        const egl::Config *configuration = mConfigSet.get(config);
    
        switch (attribute)
        {
          case EGL_BUFFER_SIZE:               *value = configuration->mBufferSize;             break;
          case EGL_ALPHA_SIZE:                *value = configuration->mAlphaSize;              break;
          case EGL_BLUE_SIZE:                 *value = configuration->mBlueSize;               break;
          case EGL_GREEN_SIZE:                *value = configuration->mGreenSize;              break;
          case EGL_RED_SIZE:                  *value = configuration->mRedSize;                break;
          case EGL_DEPTH_SIZE:                *value = configuration->mDepthSize;              break;
          case EGL_STENCIL_SIZE:              *value = configuration->mStencilSize;            break;
          case EGL_CONFIG_CAVEAT:             *value = configuration->mConfigCaveat;           break;
          case EGL_CONFIG_ID:                 *value = configuration->mConfigID;               break;
          case EGL_LEVEL:                     *value = configuration->mLevel;                  break;
          case EGL_NATIVE_RENDERABLE:         *value = configuration->mNativeRenderable;       break;
          case EGL_NATIVE_VISUAL_TYPE:        *value = configuration->mNativeVisualType;       break;
          case EGL_SAMPLES:                   *value = configuration->mSamples;                break;
          case EGL_SAMPLE_BUFFERS:            *value = configuration->mSampleBuffers;          break;
          case EGL_SURFACE_TYPE:              *value = configuration->mSurfaceType;            break;
          case EGL_TRANSPARENT_TYPE:          *value = configuration->mTransparentType;        break;
          case EGL_TRANSPARENT_BLUE_VALUE:    *value = configuration->mTransparentBlueValue;   break;
          case EGL_TRANSPARENT_GREEN_VALUE:   *value = configuration->mTransparentGreenValue;  break;
          case EGL_TRANSPARENT_RED_VALUE:     *value = configuration->mTransparentRedValue;    break;
          case EGL_BIND_TO_TEXTURE_RGB:       *value = configuration->mBindToTextureRGB;       break;
          case EGL_BIND_TO_TEXTURE_RGBA:      *value = configuration->mBindToTextureRGBA;      break;
          case EGL_MIN_SWAP_INTERVAL:         *value = configuration->mMinSwapInterval;        break;
          case EGL_MAX_SWAP_INTERVAL:         *value = configuration->mMaxSwapInterval;        break;
          case EGL_LUMINANCE_SIZE:            *value = configuration->mLuminanceSize;          break;
          case EGL_ALPHA_MASK_SIZE:           *value = configuration->mAlphaMaskSize;          break;
          case EGL_COLOR_BUFFER_TYPE:         *value = configuration->mColorBufferType;        break;
          case EGL_RENDERABLE_TYPE:           *value = configuration->mRenderableType;         break;
          case EGL_MATCH_NATIVE_PIXMAP:       *value = false; UNIMPLEMENTED();                 break;
          case EGL_CONFORMANT:                *value = configuration->mConformant;             break;
          case EGL_MAX_PBUFFER_WIDTH:         *value = configuration->mMaxPBufferWidth;        break;
          case EGL_MAX_PBUFFER_HEIGHT:        *value = configuration->mMaxPBufferHeight;       break;
          case EGL_MAX_PBUFFER_PIXELS:        *value = configuration->mMaxPBufferPixels;       break;
          default:
            return false;
        }
    
        return true;
    }
    
    bool Display::createDevice()
    {
        D3DPRESENT_PARAMETERS presentParameters = getDefaultPresentParameters();
        DWORD behaviorFlags = D3DCREATE_FPU_PRESERVE | D3DCREATE_NOWINDOWCHANGES;
    
        HRESULT result = mD3d9->CreateDevice(mAdapter, mDeviceType, mDeviceWindow, behaviorFlags | D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE, &presentParameters, &mDevice);
    
        if (result == D3DERR_OUTOFVIDEOMEMORY || result == E_OUTOFMEMORY || result == D3DERR_DEVICELOST)
        {
            return error(EGL_BAD_ALLOC, false);
        }
    
        if (FAILED(result))
        {
            result = mD3d9->CreateDevice(mAdapter, mDeviceType, mDeviceWindow, behaviorFlags | D3DCREATE_SOFTWARE_VERTEXPROCESSING, &presentParameters, &mDevice);
    
            if (FAILED(result))
            {
                ASSERT(result == D3DERR_OUTOFVIDEOMEMORY || result == E_OUTOFMEMORY || result == D3DERR_NOTAVAILABLE || result == D3DERR_DEVICELOST);
                return error(EGL_BAD_ALLOC, false);
            }
        }
    
        if (mD3d9Ex)
        {
            result = mDevice->QueryInterface(IID_IDirect3DDevice9Ex, (void**) &mDeviceEx);
            ASSERT(SUCCEEDED(result));
        }
    
        // Permanent non-default states
        mDevice->SetRenderState(D3DRS_POINTSPRITEENABLE, TRUE);
    
        mSceneStarted = false;
    
        return true;
    }
    
    bool Display::resetDevice()
    {
        D3DPRESENT_PARAMETERS presentParameters = getDefaultPresentParameters();
        HRESULT result;
        
        do
        {
            Sleep(0);   // Give the graphics driver some CPU time
    
            result = mDevice->Reset(&presentParameters);
        }
        while (result == D3DERR_DEVICELOST);
    
        if (FAILED(result))
        {
            return error(EGL_BAD_ALLOC, false);
        }
    
        ASSERT(SUCCEEDED(result));
    
        return true;
    }
    
    EGLSurface Display::createWindowSurface(HWND window, EGLConfig config, const EGLint *attribList)
    {
        const Config *configuration = mConfigSet.get(config);
    
        if (attribList)
        {
            while (*attribList != EGL_NONE)
            {
                switch (attribList[0])
                {
                  case EGL_RENDER_BUFFER:
                    switch (attribList[1])
                    {
                      case EGL_BACK_BUFFER:
                        break;
                      case EGL_SINGLE_BUFFER:
                        return error(EGL_BAD_MATCH, EGL_NO_SURFACE);   // Rendering directly to front buffer not supported
                      default:
                        return error(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
                    }
                    break;
                  case EGL_VG_COLORSPACE:
                    return error(EGL_BAD_MATCH, EGL_NO_SURFACE);
                  case EGL_VG_ALPHA_FORMAT:
                    return error(EGL_BAD_MATCH, EGL_NO_SURFACE);
                  default:
                    return error(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
                }
    
                attribList += 2;
            }
        }
    
        if (hasExistingWindowSurface(window))
        {
            return error(EGL_BAD_ALLOC, EGL_NO_SURFACE);
        }
    
        if (isDeviceLost()) {
            if (!restoreLostDevice())
                return EGL_NO_SURFACE;
        }
    
        Surface *surface = new Surface(this, configuration, window);
    
        if (!surface->initialize())
        {
            delete surface;
            return EGL_NO_SURFACE;
        }
    
        mSurfaceSet.insert(surface);
    
        return success(surface);
    }
    
    EGLSurface Display::createOffscreenSurface(EGLConfig config, HANDLE shareHandle, const EGLint *attribList)
    {
        EGLint width = 0, height = 0;
        EGLenum textureFormat = EGL_NO_TEXTURE;
        EGLenum textureTarget = EGL_NO_TEXTURE;
        const Config *configuration = mConfigSet.get(config);
    
        if (attribList)
        {
            while (*attribList != EGL_NONE)
            {
                switch (attribList[0])
                {
                  case EGL_WIDTH:
                    width = attribList[1];
                    break;
                  case EGL_HEIGHT:
                    height = attribList[1];
                    break;
                  case EGL_LARGEST_PBUFFER:
                    if (attribList[1] != EGL_FALSE)
                      UNIMPLEMENTED(); // FIXME
                    break;
                  case EGL_TEXTURE_FORMAT:
                    switch (attribList[1])
                    {
                      case EGL_NO_TEXTURE:
                      case EGL_TEXTURE_RGB:
                      case EGL_TEXTURE_RGBA:
                        textureFormat = attribList[1];
                        break;
                      default:
                        return error(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
                    }
                    break;
                  case EGL_TEXTURE_TARGET:
                    switch (attribList[1])
                    {
                      case EGL_NO_TEXTURE:
                      case EGL_TEXTURE_2D:
                        textureTarget = attribList[1];
                        break;
                      default:
                        return error(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
                    }
                    break;
                  case EGL_MIPMAP_TEXTURE:
                    if (attribList[1] != EGL_FALSE)
                      return error(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
                    break;
                  case EGL_VG_COLORSPACE:
                    return error(EGL_BAD_MATCH, EGL_NO_SURFACE);
                  case EGL_VG_ALPHA_FORMAT:
                    return error(EGL_BAD_MATCH, EGL_NO_SURFACE);
                  default:
                    return error(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
                }
    
                attribList += 2;
            }
        }
    
        if (width < 0 || height < 0)
        {
            return error(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
        }
    
        if (width == 0 || height == 0)
        {
            return error(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
        }
    
        if (textureFormat != EGL_NO_TEXTURE && !getNonPower2TextureSupport() && (!gl::isPow2(width) || !gl::isPow2(height)))
        {
            return error(EGL_BAD_MATCH, EGL_NO_SURFACE);
        }
    
        if ((textureFormat != EGL_NO_TEXTURE && textureTarget == EGL_NO_TEXTURE) ||
            (textureFormat == EGL_NO_TEXTURE && textureTarget != EGL_NO_TEXTURE))
        {
            return error(EGL_BAD_MATCH, EGL_NO_SURFACE);
        }
    
        if (!(configuration->mSurfaceType & EGL_PBUFFER_BIT))
        {
            return error(EGL_BAD_MATCH, EGL_NO_SURFACE);
        }
    
        if ((textureFormat == EGL_TEXTURE_RGB && configuration->mBindToTextureRGB != EGL_TRUE) ||
            (textureFormat == EGL_TEXTURE_RGBA && configuration->mBindToTextureRGBA != EGL_TRUE))
        {
            return error(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
        }
    
        if (isDeviceLost()) {
            if (!restoreLostDevice())
                return EGL_NO_SURFACE;
        }
    
        Surface *surface = new Surface(this, configuration, shareHandle, width, height, textureFormat, textureTarget);
    
        if (!surface->initialize())
        {
            delete surface;
            return EGL_NO_SURFACE;
        }
    
        mSurfaceSet.insert(surface);
    
        return success(surface);
    }
    
    EGLContext Display::createContext(EGLConfig configHandle, const gl::Context *shareContext)
    {
        if (!mDevice)
        {
            if (!createDevice())
            {
                return NULL;
            }
        }
        else if (isDeviceLost())   // Lost device
        {
            if (!restoreLostDevice())
                return NULL;
        }
    
        const egl::Config *config = mConfigSet.get(configHandle);
    
        gl::Context *context = glCreateContext(config, shareContext);
        mContextSet.insert(context);
    
        return context;
    }
    
    bool Display::restoreLostDevice()
    {
        // Release surface resources to make the Reset() succeed
        for (SurfaceSet::iterator surface = mSurfaceSet.begin(); surface != mSurfaceSet.end(); surface++)
        {
            (*surface)->release();
        }
    
        if (!resetDevice())
        {
            return false;
        }
    
        // Restore any surfaces that may have been lost
        for (SurfaceSet::iterator surface = mSurfaceSet.begin(); surface != mSurfaceSet.end(); surface++)
        {
            (*surface)->resetSwapChain();
        }
    
        return true;
    }
    
    
    void Display::destroySurface(egl::Surface *surface)
    {
        delete surface;
        mSurfaceSet.erase(surface);
    }
    
    void Display::destroyContext(gl::Context *context)
    {
        glDestroyContext(context);
        mContextSet.erase(context);
    }
    
    bool Display::isInitialized() const
    {
        return mD3d9 != NULL && mConfigSet.size() > 0;
    }
    
    bool Display::isValidConfig(EGLConfig config)
    {
        return mConfigSet.get(config) != NULL;
    }
    
    bool Display::isValidContext(gl::Context *context)
    {
        return mContextSet.find(context) != mContextSet.end();
    }
    
    bool Display::isValidSurface(egl::Surface *surface)
    {
        return mSurfaceSet.find(surface) != mSurfaceSet.end();
    }
    
    bool Display::hasExistingWindowSurface(HWND window)
    {
        for (SurfaceSet::iterator surface = mSurfaceSet.begin(); surface != mSurfaceSet.end(); surface++)
        {
            if ((*surface)->getWindowHandle() == window)
            {
                return true;
            }
        }
    
        return false;
    }
    
    EGLint Display::getMinSwapInterval()
    {
        return mMinSwapInterval;
    }
    
    EGLint Display::getMaxSwapInterval()
    {
        return mMaxSwapInterval;
    }
    
    IDirect3DDevice9 *Display::getDevice()
    {
        if (!mDevice)
        {
            if (!createDevice())
            {
                return NULL;
            }
        }
    
        return mDevice;
    }
    
    D3DCAPS9 Display::getDeviceCaps()
    {
        return mDeviceCaps;
    }
    
    D3DADAPTER_IDENTIFIER9 *Display::getAdapterIdentifier()
    {
        return &mAdapterIdentifier;
    }
    
    bool Display::isDeviceLost()
    {
        if (mDeviceEx)
        {
            return FAILED(mDeviceEx->CheckDeviceState(NULL));
        }
        else if(mDevice)
        {
            return FAILED(mDevice->TestCooperativeLevel());
        }
    
        return false;   // No device yet, so no reset required
    }
    
    void Display::getMultiSampleSupport(D3DFORMAT format, bool *multiSampleArray)
    {
        for (int multiSampleIndex = 0; multiSampleIndex <= D3DMULTISAMPLE_16_SAMPLES; multiSampleIndex++)
        {
            HRESULT result = mD3d9->CheckDeviceMultiSampleType(mAdapter, mDeviceType, format,
                                                               TRUE, (D3DMULTISAMPLE_TYPE)multiSampleIndex, NULL);
    
            multiSampleArray[multiSampleIndex] = SUCCEEDED(result);
        }
    }
    
    bool Display::getDXT1TextureSupport()
    {
        D3DDISPLAYMODE currentDisplayMode;
        mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
    
        return SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0, D3DRTYPE_TEXTURE, D3DFMT_DXT1));
    }
    
    bool Display::getDXT3TextureSupport()
    {
        D3DDISPLAYMODE currentDisplayMode;
        mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
    
        return SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0, D3DRTYPE_TEXTURE, D3DFMT_DXT3));
    }
    
    bool Display::getDXT5TextureSupport()
    {
        D3DDISPLAYMODE currentDisplayMode;
        mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
    
        return SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0, D3DRTYPE_TEXTURE, D3DFMT_DXT5));
    }
    
    bool Display::getFloatTextureSupport(bool *filtering, bool *renderable)
    {
        D3DDISPLAYMODE currentDisplayMode;
        mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
    
        *filtering = SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_QUERY_FILTER, 
                                                        D3DRTYPE_TEXTURE, D3DFMT_A32B32G32R32F)) &&
                     SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_QUERY_FILTER,
                                                        D3DRTYPE_CUBETEXTURE, D3DFMT_A32B32G32R32F));
        
        *renderable = SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_RENDERTARGET,
                                                         D3DRTYPE_TEXTURE, D3DFMT_A32B32G32R32F))&&
                      SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_RENDERTARGET,
                                                         D3DRTYPE_CUBETEXTURE, D3DFMT_A32B32G32R32F));
    
        if (!filtering && !renderable)
        {
            return SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0, 
                                                      D3DRTYPE_TEXTURE, D3DFMT_A32B32G32R32F)) &&
                   SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0,
                                                      D3DRTYPE_CUBETEXTURE, D3DFMT_A32B32G32R32F));
        }
        else
        {
            return true;
        }
    }
    
    bool Display::getHalfFloatTextureSupport(bool *filtering, bool *renderable)
    {
        D3DDISPLAYMODE currentDisplayMode;
        mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
    
        *filtering = SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_QUERY_FILTER, 
                                                        D3DRTYPE_TEXTURE, D3DFMT_A16B16G16R16F)) &&
                     SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_QUERY_FILTER,
                                                        D3DRTYPE_CUBETEXTURE, D3DFMT_A16B16G16R16F));
        
        *renderable = SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_RENDERTARGET, 
                                                        D3DRTYPE_TEXTURE, D3DFMT_A16B16G16R16F)) &&
                     SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_RENDERTARGET,
                                                        D3DRTYPE_CUBETEXTURE, D3DFMT_A16B16G16R16F));
    
        if (!filtering && !renderable)
        {
            return SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0, 
                                                      D3DRTYPE_TEXTURE, D3DFMT_A16B16G16R16F)) &&
                   SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0,
                                                      D3DRTYPE_CUBETEXTURE, D3DFMT_A16B16G16R16F));
        }
        else
        {
            return true;
        }
    }
    
    bool Display::getLuminanceTextureSupport()
    {
        D3DDISPLAYMODE currentDisplayMode;
        mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
    
        return SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0, D3DRTYPE_TEXTURE, D3DFMT_L8));
    }
    
    bool Display::getLuminanceAlphaTextureSupport()
    {
        D3DDISPLAYMODE currentDisplayMode;
        mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
    
        return SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0, D3DRTYPE_TEXTURE, D3DFMT_A8L8));
    }
    
    D3DPOOL Display::getBufferPool(DWORD usage) const
    {
        if (mD3d9Ex != NULL)
        {
            return D3DPOOL_DEFAULT;
        }
        else
        {
            if (!(usage & D3DUSAGE_DYNAMIC))
            {
                return D3DPOOL_MANAGED;
            }
        }
    
        return D3DPOOL_DEFAULT;
    }
    
    bool Display::getEventQuerySupport()
    {
        IDirect3DQuery9 *query;
        HRESULT result = mDevice->CreateQuery(D3DQUERYTYPE_EVENT, &query);
        if (SUCCEEDED(result))
        {
            query->Release();
        }
    
        return result != D3DERR_NOTAVAILABLE;
    }
    
    D3DPRESENT_PARAMETERS Display::getDefaultPresentParameters()
    {
        D3DPRESENT_PARAMETERS presentParameters = {0};
    
        // The default swap chain is never actually used. Surface will create a new swap chain with the proper parameters.
        presentParameters.AutoDepthStencilFormat = D3DFMT_UNKNOWN;
        presentParameters.BackBufferCount = 1;
        presentParameters.BackBufferFormat = D3DFMT_UNKNOWN;
        presentParameters.BackBufferWidth = 1;
        presentParameters.BackBufferHeight = 1;
        presentParameters.EnableAutoDepthStencil = FALSE;
        presentParameters.Flags = 0;
        presentParameters.hDeviceWindow = mDeviceWindow;
        presentParameters.MultiSampleQuality = 0;
        presentParameters.MultiSampleType = D3DMULTISAMPLE_NONE;
        presentParameters.PresentationInterval = D3DPRESENT_INTERVAL_DEFAULT;
        presentParameters.SwapEffect = D3DSWAPEFFECT_DISCARD;
        presentParameters.Windowed = TRUE;
    
        return presentParameters;
    }
    
    void Display::initExtensionString()
    {
        HMODULE swiftShader = GetModuleHandle(TEXT("swiftshader_d3d9.dll"));
        bool isd3d9ex = isD3d9ExDevice();
    
        mExtensionString = "";
    
        if (isd3d9ex) {
            mExtensionString += "EGL_ANGLE_d3d_share_handle_client_buffer ";
        }
    
        mExtensionString += "EGL_ANGLE_query_surface_pointer ";
    
        if (swiftShader)
        {
          mExtensionString += "EGL_ANGLE_software_display ";
        }
    
        if (isd3d9ex) {
            mExtensionString += "EGL_ANGLE_surface_d3d_texture_2d_share_handle ";
        }
    
        std::string::size_type end = mExtensionString.find_last_not_of(' ');
        if (end != std::string::npos)
        {
            mExtensionString.resize(end+1);
        }
    }
    
    const char *Display::getExtensionString() const
    {
        return mExtensionString.c_str();
    }
    
    // Only Direct3D 10 ready devices support all the necessary vertex texture formats.
    // We test this using D3D9 by checking support for the R16F format.
    bool Display::getVertexTextureSupport() const
    {
        if (!isInitialized() || mDeviceCaps.PixelShaderVersion < D3DPS_VERSION(3, 0))
        {
            return false;
        }
    
        D3DDISPLAYMODE currentDisplayMode;
        mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
    
        HRESULT result = mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_QUERY_VERTEXTEXTURE, D3DRTYPE_TEXTURE, D3DFMT_R16F);
    
        return SUCCEEDED(result);
    }
    
    bool Display::getNonPower2TextureSupport() const
    {
        return !(mDeviceCaps.TextureCaps & D3DPTEXTURECAPS_POW2) &&
               !(mDeviceCaps.TextureCaps & D3DPTEXTURECAPS_CUBEMAP_POW2) &&
               !(mDeviceCaps.TextureCaps & D3DPTEXTURECAPS_NONPOW2CONDITIONAL);
    }
    
    }