Add option to use the Android hardware scaler by setting a low resolution

UI/NativeApp.cpp

@@ -193,14 +193,17 @@ void QtHost::ShutdownSound() { g_mixer = 0; }
 #endif
 
 std::string NativeQueryConfig(std::string query) {
+	char temp[128];
 	if (query == "screenRotation") {
-		char temp[128];
 		sprintf(temp, "%i", g_Config.iScreenRotation);
-		return temp;
+		return std::string(temp);
 	} else if (query == "immersiveMode") {
-		return g_Config.bImmersiveMode ? "1" : "0";
+		return std::string(g_Config.bImmersiveMode ? "1" : "0");
+	} else if (query == "hwScale") {
+		sprintf(temp, "%i", g_Config.iAndroidHwScale);
+		return std::string(temp);
 	} else {
-		return "";
+		return std::string("");
 	}
 }
 
@@ -541,8 +544,6 @@ void NativeInitGraphics() {
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 
-	glstate.viewport.set(0, 0, pixel_xres, pixel_yres);
-
 #ifdef _WIN32
 	DSound::DSound_StartSound(MainWindow::GetHWND(), &Win32Mix);
 #endif