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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #pragma once
     18 
     19 #include "Layer.h"
     20 
     21 #include <SkImage.h>
     22 
     23 namespace android {
     24 namespace uirenderer {
     25 /**
     26  * A layer has dimensions and is backed by a VkImage.
     27  */
     28 class VkLayer : public Layer {
     29 public:
     30     VkLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight,
     31             SkColorFilter* colorFilter, int alpha, SkBlendMode mode, bool blend)
     32             : Layer(renderState, Api::Vulkan, colorFilter, alpha, mode)
     33             , mWidth(layerWidth)
     34             , mHeight(layerHeight)
     35             , mBlend(blend) {}
     36 
     37     virtual ~VkLayer() {}
     38 
     39     uint32_t getWidth() const override {
     40         return mWidth;
     41     }
     42 
     43     uint32_t getHeight() const override {
     44         return mHeight;
     45     }
     46 
     47     void setSize(uint32_t width, uint32_t height) override {
     48         mWidth = width;
     49         mHeight = height;
     50     }
     51 
     52     void setBlend(bool blend) override {
     53         mBlend = blend;
     54     }
     55 
     56     bool isBlend() const override {
     57         return mBlend;
     58     }
     59 
     60     sk_sp<SkImage> getImage() {
     61         return mImage;
     62     }
     63 
     64     void updateTexture();
     65 
     66     // If we've destroyed the vulkan context (VkInstance, VkDevice, etc.), we must make sure to
     67     // destroy any VkImages that were made with that context.
     68     void onVkContextDestroyed();
     69 
     70 private:
     71     int mWidth;
     72     int mHeight;
     73     bool mBlend;
     74 
     75    sk_sp<SkImage> mImage;
     76 
     77 }; // struct VkLayer
     78 
     79 }; // namespace uirenderer
     80 }; // namespace android
     81