Add support for various egl Get methods

src/libEGL/libEGL.cpp

@@ -847,6 +847,10 @@ EGLBoolean __stdcall eglMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface
             UNIMPLEMENTED();   // FIXME
         }
 
+        egl::setCurrentDisplay(dpy);
+        egl::setCurrentDrawSurface(draw);
+        egl::setCurrentReadSurface(read);
+
         glMakeCurrent(context, display, static_cast<egl::Surface*>(draw));
 
         return success(EGL_TRUE);
@@ -883,9 +887,20 @@ EGLSurface __stdcall eglGetCurrentSurface(EGLint readdraw)
 
     try
     {
-        UNIMPLEMENTED();   // FIXME
-
-        return success(EGL_NO_SURFACE);
+        if (readdraw == EGL_READ)
+        {
+            EGLSurface read = egl::getCurrentReadSurface();
+            return success(read);
+        }
+        else if (readdraw == EGL_DRAW)
+        {
+            EGLSurface draw = egl::getCurrentDrawSurface();
+            return success(draw);
+        }
+        else
+        {
+            return error(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
+        }
     }
     catch(std::bad_alloc&)
     {
@@ -901,9 +916,9 @@ EGLDisplay __stdcall eglGetCurrentDisplay(void)
 
     try
     {
-        UNIMPLEMENTED();   // FIXME
+        EGLDisplay dpy = egl::getCurrentDisplay();
 
-        return success(EGL_NO_DISPLAY);
+        return success(dpy);
     }
     catch(std::bad_alloc&)
     {

src/libEGL/main.cpp

@@ -47,6 +47,9 @@ BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
 
                 current->error = EGL_SUCCESS;
                 current->API = EGL_OPENGL_ES_API;
+                current->display = EGL_NO_DISPLAY;
+                current->drawSurface = EGL_NO_SURFACE;
+                current->readSurface = EGL_NO_SURFACE;
             }
         }
         break;
@@ -108,6 +111,48 @@ EGLenum getCurrentAPI()
 
     return current->API;
 }
+
+void setCurrentDisplay(EGLDisplay dpy)
+{
+    Current *current = (Current*)TlsGetValue(currentTLS);
+
+    current->display = dpy;
+}
+
+EGLDisplay getCurrentDisplay()
+{
+    Current *current = (Current*)TlsGetValue(currentTLS);
+
+    return current->display;
+}
+
+void setCurrentDrawSurface(EGLSurface surface)
+{
+    Current *current = (Current*)TlsGetValue(currentTLS);
+
+    current->drawSurface = surface;
+}
+
+EGLSurface getCurrentDrawSurface()
+{
+    Current *current = (Current*)TlsGetValue(currentTLS);
+
+    return current->drawSurface;
+}
+
+void setCurrentReadSurface(EGLSurface surface)
+{
+    Current *current = (Current*)TlsGetValue(currentTLS);
+
+    current->readSurface = surface;
+}
+
+EGLSurface getCurrentReadSurface()
+{
+    Current *current = (Current*)TlsGetValue(currentTLS);
+
+    return current->readSurface;
+}
 }
 
 void error(EGLint errorCode)

src/libEGL/main.h

@@ -18,6 +18,9 @@ struct Current
 {
     EGLint error;
     EGLenum API;
+    EGLDisplay display;
+    EGLSurface drawSurface;
+    EGLSurface readSurface;
 };
 
 void setCurrentError(EGLint error);
@@ -25,6 +28,15 @@ EGLint getCurrentError();
 
 void setCurrentAPI(EGLenum API);
 EGLenum getCurrentAPI();
+
+void setCurrentDisplay(EGLDisplay dpy);
+EGLDisplay getCurrentDisplay();
+
+void setCurrentDrawSurface(EGLSurface surface);
+EGLSurface getCurrentDrawSurface();
+
+void setCurrentReadSurface(EGLSurface surface);
+EGLSurface getCurrentReadSurface();
 }
 
 void error(EGLint errorCode);