upload android base code part1

android/frameworks/native/vulkan/libvulkan/layers_extensions.h

@@ -0,0 +1,68 @@
+/*
+ * Copyright 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 LIBVULKAN_LAYERS_EXTENSIONS_H
+#define LIBVULKAN_LAYERS_EXTENSIONS_H 1
+
+#include <vulkan/vulkan.h>
+
+namespace vulkan {
+namespace api {
+
+struct Layer;
+
+class LayerRef {
+   public:
+    explicit LayerRef(const Layer* layer);
+    LayerRef(LayerRef&& other);
+    ~LayerRef();
+    LayerRef(const LayerRef&) = delete;
+    LayerRef& operator=(const LayerRef&) = delete;
+
+    // provides bool-like behavior
+    operator const Layer*() const { return layer_; }
+
+    PFN_vkGetInstanceProcAddr GetGetInstanceProcAddr() const;
+    PFN_vkGetDeviceProcAddr GetGetDeviceProcAddr() const;
+
+   private:
+    const Layer* layer_;
+};
+
+void DiscoverLayers();
+
+uint32_t GetLayerCount();
+const Layer& GetLayer(uint32_t index);
+const Layer* FindLayer(const char* name);
+
+const VkLayerProperties& GetLayerProperties(const Layer& layer);
+bool IsLayerGlobal(const Layer& layer);
+const VkExtensionProperties* GetLayerInstanceExtensions(const Layer& layer,
+                                                        uint32_t& count);
+const VkExtensionProperties* GetLayerDeviceExtensions(const Layer& layer,
+                                                      uint32_t& count);
+
+const VkExtensionProperties* FindLayerInstanceExtension(const Layer& layer,
+                                                        const char* name);
+const VkExtensionProperties* FindLayerDeviceExtension(const Layer& layer,
+                                                      const char* name);
+
+LayerRef GetLayerRef(const Layer& layer);
+
+}  // namespace api
+}  // namespace vulkan
+
+#endif  // LIBVULKAN_LAYERS_EXTENSIONS_H