Hololens port

.gitignore

@@ -44,3 +44,42 @@ capture_webrender/
 
 /unminified-js
 
+# Hololens artifacts
+
+support/hololens/x64/
+support/hololens/ARM/
+support/hololens/Generated\ Files
+
+# Ignore thumbnails created by Windows
+support/hololens/Thumbs.db
+
+# Ignore files built by Visual Studio
+support/hololens/*.obj
+support/hololens/*.exe
+support/hololens/*.pdb
+support/hololens/*.user
+support/hololens/*.aps
+support/hololens/*.pch
+support/hololens/*.vspscc
+support/hololens/*_i.c
+support/hololens/*_p.c
+support/hololens/*.ncb
+support/hololens/*.suo
+support/hololens/*.tlb
+support/hololens/*.tlh
+support/hololens/*.bak
+support/hololens/*.cache
+support/hololens/*.ilk
+support/hololens/*.log
+support/hololens/[Bb]in
+support/hololens/[Dd]ebug*/
+support/hololens/*.lib
+support/hololens/*.sbr
+support/hololens/obj/
+support/hololens/[Rr]elease*/
+support/hololens/_ReSharper*/
+support/hololens/[Tt]est[Rr]esult*
+support/hololens/.vs/
+
+# Nuget packages folder
+support/hololens/packages/

support/hololens/App.xaml

@@ -0,0 +1,7 @@
+<Application
+    x:Class="hlservo.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:hlservo">
+
+</Application>

support/hololens/App.xaml.cpp

@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#include "pch.h"
+#include "App.xaml.h"
+
+using namespace hlservo;
+
+App::App()
+{
+    InitializeComponent();
+}
+
+void App::OnLaunched(Windows::ApplicationModel::Activation::LaunchActivatedEventArgs ^ e)
+{
+#if _DEBUG
+    if (IsDebuggerPresent()) {
+        DebugSettings->EnableFrameRateCounter = true;
+    }
+#endif
+
+    if (mPage == nullptr) {
+        mPage = ref new OpenGLESPage(&mOpenGLES);
+    }
+
+    Windows::UI::Xaml::Window::Current->Content = mPage;
+    Windows::UI::Xaml::Window::Current->Activate();
+}

support/hololens/App.xaml.h

@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+#include "OpenGLES.h"
+#include "app.g.h"
+#include "openglespage.xaml.h"
+
+namespace hlservo {
+ref class App sealed {
+public:
+    App();
+    virtual void OnLaunched(Windows::ApplicationModel::Activation::LaunchActivatedEventArgs ^ e) override;
+
+private:
+    OpenGLESPage ^ mPage;
+    OpenGLES mOpenGLES;
+};
+}

support/hololens/OpenGLES.cpp

@@ -0,0 +1,232 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#include "pch.h"
+#include "OpenGLES.h"
+
+using namespace Platform;
+using namespace Windows::UI::Xaml::Controls;
+using namespace Windows::Foundation;
+using namespace Windows::Foundation::Collections;
+
+OpenGLES::OpenGLES()
+    : mEglConfig(nullptr)
+    , mEglDisplay(EGL_NO_DISPLAY)
+    , mEglContext(EGL_NO_CONTEXT)
+{
+    Initialize();
+}
+
+OpenGLES::~OpenGLES()
+{
+    Cleanup();
+}
+
+void OpenGLES::Initialize()
+{
+    const EGLint configAttributes[] = {
+        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+        EGL_RED_SIZE, 8,
+        EGL_GREEN_SIZE, 8,
+        EGL_BLUE_SIZE, 8,
+        EGL_ALPHA_SIZE, 8,
+        EGL_DEPTH_SIZE, 24,
+        EGL_STENCIL_SIZE, 8,
+        EGL_NONE
+    };
+
+    const EGLint contextAttributes[] = {
+        EGL_CONTEXT_CLIENT_VERSION, 3,
+        EGL_NONE
+    };
+
+    // Based on Angle MS template.
+
+    const EGLint defaultDisplayAttributes[] = {
+        // These are the default display attributes, used to request ANGLE's D3D11 renderer.
+        // eglInitialize will only succeed with these attributes if the hardware supports D3D11 Feature Level 10_0+.
+        EGL_PLATFORM_ANGLE_TYPE_ANGLE,
+        EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
+
+        // EGL_ANGLE_DISPLAY_ALLOW_RENDER_TO_BACK_BUFFER is an optimization that can have large performance benefits on
+        // mobile devices. Its syntax is subject to change, though. Please update your Visual Studio templates if you
+        // experience compilation issues with it.
+        EGL_ANGLE_DISPLAY_ALLOW_RENDER_TO_BACK_BUFFER,
+        EGL_TRUE,
+
+        // EGL_PLATFORM_ANGLE_ENABLE_AUTOMATIC_TRIM_ANGLE is an option that enables ANGLE to automatically call
+        // the IDXGIDevice3::Trim method on behalf of the application when it gets suspended.
+        // Calling IDXGIDevice3::Trim when an application is suspended is a Windows Store application certification
+        // requirement.
+        EGL_PLATFORM_ANGLE_ENABLE_AUTOMATIC_TRIM_ANGLE,
+        EGL_TRUE,
+        EGL_NONE,
+    };
+
+    const EGLint fl9_3DisplayAttributes[] = {
+        // These can be used to request ANGLE's D3D11 renderer, with D3D11 Feature Level 9_3.
+        // These attributes are used if the call to eglInitialize fails with the default display attributes.
+        EGL_PLATFORM_ANGLE_TYPE_ANGLE,
+        EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
+        EGL_PLATFORM_ANGLE_MAX_VERSION_MAJOR_ANGLE,
+        9,
+        EGL_PLATFORM_ANGLE_MAX_VERSION_MINOR_ANGLE,
+        3,
+        EGL_ANGLE_DISPLAY_ALLOW_RENDER_TO_BACK_BUFFER,
+        EGL_TRUE,
+        EGL_PLATFORM_ANGLE_ENABLE_AUTOMATIC_TRIM_ANGLE,
+        EGL_TRUE,
+        EGL_NONE,
+    };
+
+    const EGLint warpDisplayAttributes[] = {
+        // These attributes can be used to request D3D11 WARP.
+        // They are used if eglInitialize fails with both the default display attributes and the 9_3 display attributes.
+        EGL_PLATFORM_ANGLE_TYPE_ANGLE,
+        EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
+        EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE,
+        EGL_PLATFORM_ANGLE_DEVICE_TYPE_WARP_ANGLE,
+        EGL_ANGLE_DISPLAY_ALLOW_RENDER_TO_BACK_BUFFER,
+        EGL_TRUE,
+        EGL_PLATFORM_ANGLE_ENABLE_AUTOMATIC_TRIM_ANGLE,
+        EGL_TRUE,
+        EGL_NONE,
+    };
+
+    EGLConfig config = NULL;
+
+    // eglGetPlatformDisplayEXT is an alternative to eglGetDisplay.
+    // It allows us to pass in display attributes, used to configure D3D11.
+    PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT =
+      reinterpret_cast<PFNEGLGETPLATFORMDISPLAYEXTPROC>(eglGetProcAddress("eglGetPlatformDisplayEXT"));
+    if (!eglGetPlatformDisplayEXT) {
+        throw Exception::CreateException(E_FAIL, L"Failed to get function eglGetPlatformDisplayEXT");
+    }
+
+    //
+    // To initialize the display, we make three sets of calls to eglGetPlatformDisplayEXT and eglInitialize,
+    // with varying parameters passed to eglGetPlatformDisplayEXT:
+    // 1) The first calls uses "defaultDisplayAttributes" as a parameter. This corresponds to D3D11 Feature Level 10_0+.
+    // 2) If eglInitialize fails for step 1 (e.g. because 10_0+ isn't supported by the default GPU), then we try again
+    //    using "fl9_3DisplayAttributes". This corresponds to D3D11 Feature Level 9_3.
+    // 3) If eglInitialize fails for step 2 (e.g. because 9_3+ isn't supported by the default GPU), then we try again
+    //    using "warpDisplayAttributes".  This corresponds to D3D11 Feature Level 11_0 on WARP, a D3D11 software
+    //    rasterizer.
+    //
+
+    // This tries to initialize EGL to D3D11 Feature Level 10_0+. See above comment for details.
+    mEglDisplay = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, EGL_DEFAULT_DISPLAY, defaultDisplayAttributes);
+    if (mEglDisplay == EGL_NO_DISPLAY) {
+        throw Exception::CreateException(E_FAIL, L"Failed to get EGL display");
+    }
+
+    if (eglInitialize(mEglDisplay, NULL, NULL) == EGL_FALSE) {
+        // This tries to initialize EGL to D3D11 Feature Level 9_3, if 10_0+ is unavailable (e.g. on some mobile
+        // devices).
+        mEglDisplay = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, EGL_DEFAULT_DISPLAY, fl9_3DisplayAttributes);
+        if (mEglDisplay == EGL_NO_DISPLAY) {
+            throw Exception::CreateException(E_FAIL, L"Failed to get EGL display");
+        }
+
+        if (eglInitialize(mEglDisplay, NULL, NULL) == EGL_FALSE) {
+            // This initializes EGL to D3D11 Feature Level 11_0 on WARP, if 9_3+ is unavailable on the default GPU.
+            mEglDisplay = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, EGL_DEFAULT_DISPLAY,
+                warpDisplayAttributes);
+            if (mEglDisplay == EGL_NO_DISPLAY) {
+                throw Exception::CreateException(E_FAIL, L"Failed to get EGL display");
+            }
+
+            if (eglInitialize(mEglDisplay, NULL, NULL) == EGL_FALSE) {
+                // If all of the calls to eglInitialize returned EGL_FALSE then an error has occurred.
+                throw Exception::CreateException(E_FAIL, L"Failed to initialize EGL");
+            }
+        }
+    }
+
+    EGLint numConfigs = 0;
+    if ((eglChooseConfig(mEglDisplay, configAttributes, &mEglConfig, 1, &numConfigs) == EGL_FALSE) ||
+        (numConfigs == 0)) {
+        throw Exception::CreateException(E_FAIL, L"Failed to choose first EGLConfig");
+    }
+
+    mEglContext = eglCreateContext(mEglDisplay, mEglConfig, EGL_NO_CONTEXT, contextAttributes);
+    if (mEglContext == EGL_NO_CONTEXT) {
+        throw Exception::CreateException(E_FAIL, L"Failed to create EGL context");
+    }
+}
+
+void OpenGLES::Cleanup()
+{
+    if (mEglDisplay != EGL_NO_DISPLAY && mEglContext != EGL_NO_CONTEXT) {
+        eglDestroyContext(mEglDisplay, mEglContext);
+        mEglContext = EGL_NO_CONTEXT;
+    }
+
+    if (mEglDisplay != EGL_NO_DISPLAY) {
+        eglTerminate(mEglDisplay);
+        mEglDisplay = EGL_NO_DISPLAY;
+    }
+}
+
+void OpenGLES::Reset()
+{
+    Cleanup();
+    Initialize();
+}
+
+EGLSurface OpenGLES::CreateSurface(SwapChainPanel ^ panel)
+{
+    if (!panel) {
+        throw Exception::CreateException(E_INVALIDARG, L"SwapChainPanel parameter is invalid");
+    }
+
+    EGLSurface surface = EGL_NO_SURFACE;
+
+    const EGLint surfaceAttributes[] = {
+        EGL_ANGLE_SURFACE_RENDER_TO_BACK_BUFFER, EGL_TRUE,
+        EGL_NONE
+    };
+
+    PropertySet ^ surfaceCreationProperties = ref new PropertySet();
+    surfaceCreationProperties->Insert(ref new String(EGLNativeWindowTypeProperty), panel);
+
+    // How to set size and or scale:
+    // surfaceCreationProperties->Insert(ref new String(EGLRenderSurfaceSizeProperty),
+    //  PropertyValue::CreateSize(*renderSurfaceSize));
+    // surfaceCreationProperties->Insert(ref new String(EGLRenderResolutionScaleProperty),
+    //  PropertyValue::CreateSingle(*resolutionScale));
+
+    surface = eglCreateWindowSurface(mEglDisplay, mEglConfig,
+        reinterpret_cast<IInspectable*>(surfaceCreationProperties), surfaceAttributes);
+    if (surface == EGL_NO_SURFACE) {
+        throw Exception::CreateException(E_FAIL, L"Failed to create EGL surface");
+    }
+
+    return surface;
+}
+
+void OpenGLES::GetSurfaceDimensions(const EGLSurface surface, EGLint* width, EGLint* height)
+{
+    eglQuerySurface(mEglDisplay, surface, EGL_WIDTH, width);
+    eglQuerySurface(mEglDisplay, surface, EGL_HEIGHT, height);
+}
+
+void OpenGLES::DestroySurface(const EGLSurface surface)
+{
+    if (mEglDisplay != EGL_NO_DISPLAY && surface != EGL_NO_SURFACE) {
+        eglDestroySurface(mEglDisplay, surface);
+    }
+}
+
+void OpenGLES::MakeCurrent(const EGLSurface surface)
+{
+    if (eglMakeCurrent(mEglDisplay, surface, surface, mEglContext) == EGL_FALSE) {
+        throw Exception::CreateException(E_FAIL, L"Failed to make EGLSurface current");
+    }
+}
+
+EGLBoolean OpenGLES::SwapBuffers(const EGLSurface surface)
+{
+    return (eglSwapBuffers(mEglDisplay, surface));
+}

support/hololens/OpenGLES.h

@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#pragma once
+
+class OpenGLES {
+public:
+    OpenGLES();
+    ~OpenGLES();
+
+    EGLSurface CreateSurface(Windows::UI::Xaml::Controls::SwapChainPanel ^ panel);
+    void GetSurfaceDimensions(const EGLSurface surface, EGLint* width, EGLint* height);
+    void DestroySurface(const EGLSurface surface);
+    void MakeCurrent(const EGLSurface surface);
+    EGLBoolean SwapBuffers(const EGLSurface surface);
+    void Reset();
+
+private:
+    void Initialize();
+    void Cleanup();
+
+private:
+    EGLDisplay mEglDisplay;
+    EGLContext mEglContext;
+    EGLConfig mEglConfig;
+};

support/hololens/OpenGLESPage.xaml

@@ -0,0 +1,13 @@
+<Page
+    x:Class="hlservo.OpenGLESPage"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:hlservo"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d">
+
+  <SwapChainPanel x:Name="swapChainPanel">
+    <TextBlock Text="OpenGL ES and XAML" Foreground="White" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="30" />
+  </SwapChainPanel>
+</Page>