1 files changed, 151 insertions, 0 deletions
diff --git a/platform/winrt/gl_context_egl.cpp b/platform/winrt/gl_context_egl.cpp
new file mode 100644
index 0000000000..ca592c5d19
--- /dev/null
+++ b/platform/winrt/gl_context_egl.cpp
@@ -0,0 +1,151 @@
+#include "gl_context_egl.h"
+
+using namespace Platform;
+
+void ContextEGL::release_current() {
+
+	eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, mEglContext);
+};
+
+void ContextEGL::make_current() {
+
+	eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext);
+};
+
+int ContextEGL::get_window_width() {
+
+	return width;
+};
+
+int ContextEGL::get_window_height() {
+
+	return height;
+};
+
+void ContextEGL::swap_buffers() {
+
+	if (eglSwapBuffers(mEglDisplay, mEglSurface) != EGL_TRUE)
+	{
+		cleanup();
+
+		window = CoreWindow::GetForCurrentThread();
+		initialize();
+
+		// tell rasterizer to reload textures and stuff?
+	}
+};
+
+Error ContextEGL::initialize() {
+
+	EGLint configAttribList[] = {
+		EGL_RED_SIZE, 8,
+		EGL_GREEN_SIZE, 8,
+		EGL_BLUE_SIZE, 8,
+		EGL_ALPHA_SIZE, 8,
+		EGL_DEPTH_SIZE, 8,
+		EGL_STENCIL_SIZE, 8,
+		EGL_SAMPLE_BUFFERS, 0,
+		EGL_NONE
+	};
+
+	EGLint surfaceAttribList[] = {
+		EGL_NONE, EGL_NONE
+	};
+
+	EGLint numConfigs = 0;
+	EGLint majorVersion = 1;
+	EGLint minorVersion = 0;
+	EGLDisplay display = EGL_NO_DISPLAY;
+	EGLContext context = EGL_NO_CONTEXT;
+	EGLSurface surface = EGL_NO_SURFACE;
+	EGLConfig config = nullptr;
+	EGLint contextAttribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE, EGL_NONE };
+
+	try {
+
+		display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+		if (display == EGL_NO_DISPLAY)
+		{
+			throw Exception::CreateException(E_FAIL, L"Failed to get default EGL display");
+		}
+
+		if (eglInitialize(display, &majorVersion, &minorVersion) == EGL_FALSE)
+		{
+			throw Exception::CreateException(E_FAIL, L"Failed to initialize EGL");
+		}
+
+		if (eglGetConfigs(display, NULL, 0, &numConfigs) == EGL_FALSE)
+		{
+			throw Exception::CreateException(E_FAIL, L"Failed to get EGLConfig count");
+		}
+
+		if (eglChooseConfig(display, configAttribList, &config, 1, &numConfigs) == EGL_FALSE)
+		{
+			throw Exception::CreateException(E_FAIL, L"Failed to choose first EGLConfig count");
+		}
+
+		surface = eglCreateWindowSurface(display, config, reinterpret_cast<IInspectable*>(window), surfaceAttribList);
+		if (surface == EGL_NO_SURFACE)
+		{
+			throw Exception::CreateException(E_FAIL, L"Failed to create EGL fullscreen surface");
+		}
+
+		context = eglCreateContext(display, config, EGL_NO_CONTEXT, contextAttribs);
+		if (context == EGL_NO_CONTEXT)
+		{
+			throw Exception::CreateException(E_FAIL, L"Failed to create EGL context");
+		}
+
+		if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE)
+		{
+			throw Exception::CreateException(E_FAIL, L"Failed to make fullscreen EGLSurface current");
+		}
+	} catch (...) {
+		return FAILED;
+	};
+
+	mEglDisplay = display;
+	mEglSurface = surface;
+	mEglContext = context;
+
+	eglQuerySurface(display,surface,EGL_WIDTH,&width);
+	eglQuerySurface(display,surface,EGL_HEIGHT,&height);
+
+	return OK;
+};
+
+void ContextEGL::cleanup() {
+
+	if (mEglDisplay != EGL_NO_DISPLAY && mEglSurface != EGL_NO_SURFACE)
+	{
+		eglDestroySurface(mEglDisplay, mEglSurface);
+		mEglSurface = EGL_NO_SURFACE;
+	}
+
+	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;
+	}
+};
+
+ContextEGL::ContextEGL(CoreWindow^ p_window) :
+	mEglDisplay(EGL_NO_DISPLAY),
+	mEglContext(EGL_NO_CONTEXT),
+	mEglSurface(EGL_NO_SURFACE)
+ {
+
+	window = p_window;
+};
+
+ContextEGL::~ContextEGL() {
+
+	cleanup();
+};
+