upload android base code part1

android/frameworks/base/libs/hwui/VkLayer.h

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+/*
+ * Copyright (C) 2017 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.
+ */
+
+#pragma once
+
+#include "Layer.h"
+
+#include <SkImage.h>
+
+namespace android {
+namespace uirenderer {
+/**
+ * A layer has dimensions and is backed by a VkImage.
+ */
+class VkLayer : public Layer {
+public:
+    VkLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight,
+            SkColorFilter* colorFilter, int alpha, SkBlendMode mode, bool blend)
+            : Layer(renderState, Api::Vulkan, colorFilter, alpha, mode)
+            , mWidth(layerWidth)
+            , mHeight(layerHeight)
+            , mBlend(blend) {}
+
+    virtual ~VkLayer() {}
+
+    uint32_t getWidth() const override {
+        return mWidth;
+    }
+
+    uint32_t getHeight() const override {
+        return mHeight;
+    }
+
+    void setSize(uint32_t width, uint32_t height) override {
+        mWidth = width;
+        mHeight = height;
+    }
+
+    void setBlend(bool blend) override {
+        mBlend = blend;
+    }
+
+    bool isBlend() const override {
+        return mBlend;
+    }
+
+    sk_sp<SkImage> getImage() {
+        return mImage;
+    }
+
+    void updateTexture();
+
+    // If we've destroyed the vulkan context (VkInstance, VkDevice, etc.), we must make sure to
+    // destroy any VkImages that were made with that context.
+    void onVkContextDestroyed();
+
+private:
+    int mWidth;
+    int mHeight;
+    bool mBlend;
+
+   sk_sp<SkImage> mImage;
+
+}; // struct VkLayer
+
+}; // namespace uirenderer
+}; // namespace android