add DeviceInfo

Change-Id: I4c122278a7e88b6f47c4dd3c5fc553df7d3c900d

1 files changed, 54 insertions, 0 deletions

diff --git a/libs/hwui/DeviceInfo.h b/libs/hwui/DeviceInfo.h
new file mode 100644
index 000000000000..f576a4f48021
--- /dev/null
+++ b/libs/hwui/DeviceInfo.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef DEVICEINFO_H
+#define DEVICEINFO_H
+
+#include "Extensions.h"
+#include "utils/Macros.h"
+
+namespace android {
+namespace uirenderer {
+
+class DeviceInfo {
+    PREVENT_COPY_AND_ASSIGN(DeviceInfo);
+public:
+    // returns nullptr if DeviceInfo is not initialized yet
+    // Note this does not have a memory fence so it's up to the caller
+    // to use one if required. Normally this should not be necessary
+    static const DeviceInfo* get();
+
+    // only call this after GL has been initialized, or at any point if compiled
+    // with HWUI_NULL_GPU
+    static void initialize();
+
+    const Extensions& extensions() const { return mExtensions; }
+
+    int maxTextureSize() const { return mMaxTextureSize; }
+
+private:
+    DeviceInfo() {}
+    ~DeviceInfo() {}
+
+    void load();
+
+    Extensions mExtensions;
+    int mMaxTextureSize;
+};
+
+} /* namespace uirenderer */
+} /* namespace android */
+
+#endif /* DEVICEINFO_H */