ANGLE: Support WinRT

This enables EGL for WinRT's native types, and adjusts some codepaths
to accommodate differences in between desktop Windows and WinRT.

- WinRT native handles added to eglplatform.h
- References to native handles in libEGL/libGLESv2 follow eglplatform.h
- D3D 11.1 structures and methods used when necessary
- TLS replaced with thread attribute
- LocalAlloc/Free replaced with Heap API

Change-Id: Ia90377e700d335a1c569c2145008dd4b0dfd84d3
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

1 files changed, 33 insertions, 2 deletions

diff --git a/src/3rdparty/angle/src/libEGL/Surface.cpp b/src/3rdparty/angle/src/libEGL/Surface.cpp
index b47a7bcc20..abc6d7d3b9 100644
--- a/src/3rdparty/angle/src/libEGL/Surface.cpp
+++ b/src/3rdparty/angle/src/libEGL/Surface.cpp
@@ -20,10 +20,15 @@
 #include "libEGL/main.h"
 #include "libEGL/Display.h"
 
+#if defined(ANGLE_OS_WINRT)
+#include <windows.foundation.h>
+#include <windows.ui.core.h>
+#endif
+
 namespace egl
 {
 
-Surface::Surface(Display *display, const Config *config, HWND window, EGLint postSubBufferSupported)
+Surface::Surface(Display *display, const Config *config, EGLNativeWindowType window, EGLint postSubBufferSupported)
     : mDisplay(display), mConfig(config), mWindow(window), mPostSubBufferSupported(postSubBufferSupported)
 {
     mRenderer = mDisplay->getRenderer();
@@ -96,6 +101,7 @@ bool Surface::resetSwapChain()
 
     if (mWindow)
     {
+#if !defined(ANGLE_OS_WINRT)
         RECT windowRect;
         if (!GetClientRect(getWindowHandle(), &windowRect))
         {
@@ -107,6 +113,14 @@ bool Surface::resetSwapChain()
 
         width = windowRect.right - windowRect.left;
         height = windowRect.bottom - windowRect.top;
+#else
+        ABI::Windows::Foundation::Rect windowRect;
+        ABI::Windows::UI::Core::ICoreWindow *window;
+        ASSERT(SUCCEEDED(mWindow->QueryInterface(IID_PPV_ARGS(&window))));
+        window->get_Bounds(&windowRect);
+        width = windowRect.Width;
+        height = windowRect.Height;
+#endif
     }
     else
     {
@@ -226,7 +240,7 @@ bool Surface::swapRect(EGLint x, EGLint y, EGLint width, EGLint height)
     return true;
 }
 
-HWND Surface::getWindowHandle()
+EGLNativeWindowType Surface::getWindowHandle()
 {
     return mWindow;
 }
@@ -235,6 +249,7 @@ HWND Surface::getWindowHandle()
 #define kSurfaceProperty _TEXT("Egl::SurfaceOwner")
 #define kParentWndProc _TEXT("Egl::SurfaceParentWndProc")
 
+#if !defined(ANGLE_OS_WINRT)
 static LRESULT CALLBACK SurfaceWindowProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)
 {
   if (message == WM_SIZE)
@@ -248,9 +263,13 @@ static LRESULT CALLBACK SurfaceWindowProc(HWND hwnd, UINT message, WPARAM wparam
   WNDPROC prevWndFunc = reinterpret_cast<WNDPROC >(GetProp(hwnd, kParentWndProc));
   return CallWindowProc(prevWndFunc, hwnd, message, wparam, lparam);
 }
+#endif
 
 void Surface::subclassWindow()
 {
+#if defined(ANGLE_OS_WINRT)
+    mWindowSubclassed = false;
+#else
     if (!mWindow)
     {
         return;
@@ -274,10 +293,12 @@ void Surface::subclassWindow()
     SetProp(mWindow, kSurfaceProperty, reinterpret_cast<HANDLE>(this));
     SetProp(mWindow, kParentWndProc, reinterpret_cast<HANDLE>(oldWndProc));
     mWindowSubclassed = true;
+#endif
 }
 
 void Surface::unsubclassWindow()
 {
+#if !defined(ANGLE_OS_WINRT)
     if(!mWindowSubclassed)
     {
         return;
@@ -300,10 +321,12 @@ void Surface::unsubclassWindow()
     RemoveProp(mWindow, kSurfaceProperty);
     RemoveProp(mWindow, kParentWndProc);
     mWindowSubclassed = false;
+#endif
 }
 
 bool Surface::checkForOutOfDateSwapChain()
 {
+#if !defined(ANGLE_OS_WINRT)
     RECT client;
     if (!GetClientRect(getWindowHandle(), &client))
     {
@@ -314,6 +337,14 @@ bool Surface::checkForOutOfDateSwapChain()
     // Grow the buffer now, if the window has grown. We need to grow now to avoid losing information.
     int clientWidth = client.right - client.left;
     int clientHeight = client.bottom - client.top;
+#else
+    ABI::Windows::Foundation::Rect windowRect;
+    ABI::Windows::UI::Core::ICoreWindow *window;
+    ASSERT(SUCCEEDED(mWindow->QueryInterface(IID_PPV_ARGS(&window))));
+    window->get_Bounds(&windowRect);
+    int clientWidth = windowRect.Width;
+    int clientHeight = windowRect.Height;
+#endif
     bool sizeDirty = clientWidth != getWidth() || clientHeight != getHeight();
 
     if (mSwapIntervalDirty)